Merge branch 'pratik/otel-sync-diagnostics' into pratik/otel-devbox-two-node-configs

Merge branch 'pratik/otel-phase10-workload-validation' into pratik/otel-sync-diagnostics
# Conflicts: # src/xrpld/telemetry/MetricsRegistry.cpp
2026-08-24 15:50:55 +00:00 · 2026-08-21 13:12:11 +01:00 · 2026-08-21 13:09:09 +01:00 · 2026-08-21 12:49:56 +01:00 · 2026-08-21 12:47:12 +01:00 · 2026-08-21 12:46:56 +01:00
5624 changed files with 726854 additions and 1216558 deletions
--- a/.clang-format
+++ b/.clang-format
@@ -1,5 +1,21 @@
 ---
-Language:        Cpp
+BreakBeforeBraces: Custom
+BraceWrapping:
+  AfterClass: true
+  AfterControlStatement: true
+  AfterEnum: false
+  AfterFunction: true
+  AfterNamespace: false
+  AfterObjCDeclaration: true
+  AfterStruct: true
+  AfterUnion: true
+  BeforeCatch: true
+  BeforeElse: true
+  IndentBraces: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+MaxEmptyLinesToKeep: 1
+---
+Language: Cpp
 AccessModifierOffset: -4
 AlignAfterOpenBracket: AlwaysBreak
 AlignConsecutiveAssignments: false
@@ -18,48 +34,42 @@ AlwaysBreakBeforeMultilineStrings: true
 AlwaysBreakTemplateDeclarations: true
 BinPackArguments: false
 BinPackParameters: false
-BraceWrapping:   
-  AfterClass:      true
-  AfterControlStatement: true
-  AfterEnum:       false
-  AfterFunction:   true
-  AfterNamespace:  false
-  AfterObjCDeclaration: true
-  AfterStruct:     true
-  AfterUnion:      true
-  BeforeCatch:     true
-  BeforeElse:      true
-  IndentBraces:    false
 BreakBeforeBinaryOperators: false
-BreakBeforeBraces: Custom
 BreakBeforeTernaryOperators: true
 BreakConstructorInitializersBeforeComma: true
-ColumnLimit:     80
-CommentPragmas:  '^ IWYU pragma:'
+ColumnLimit: 100
+CommentPragmas: "^ IWYU pragma:"
 ConstructorInitializerAllOnOneLineOrOnePerLine: true
 ConstructorInitializerIndentWidth: 4
 ContinuationIndentWidth: 4
 Cpp11BracedListStyle: true
 DerivePointerAlignment: false
-DisableFormat:   false
+DisableFormat: false
 ExperimentalAutoDetectBinPacking: false
-ForEachMacros:   [ foreach,   Q_FOREACH,  BOOST_FOREACH ]
-IncludeCategories: 
-  - Regex:           '^<(BeastConfig)'
-    Priority:        0
-  - Regex:           '^<(ripple)/'
-    Priority:        2
-  - Regex:           '^<(boost)/'
-    Priority:        3
-  - Regex:           '.*'
-    Priority:        4
-IncludeIsMainRegex: '$'
+ForEachMacros: [Q_FOREACH, BOOST_FOREACH]
+IncludeBlocks: Regroup
+IncludeCategories:
+  - Regex: "^<(test)/"
+    Priority: 1
+  - Regex: "^<(xrpld)/"
+    Priority: 2
+  - Regex: "^<(xrpl)/"
+    Priority: 3
+  - Regex: "^<(boost)/"
+    Priority: 4
+  - Regex: "^.*/"
+    Priority: 5
+  - Regex: '^.*\.h'
+    Priority: 6
+  - Regex: ".*"
+    Priority: 7
+IncludeIsMainRegex: "$"
+MainIncludeChar: AngleBracket
 IndentCaseLabels: true
 IndentFunctionDeclarationAfterType: false
-IndentWidth:     4
+IndentRequiresClause: true
+IndentWidth: 4
 IndentWrappedFunctionNames: false
-KeepEmptyLinesAtTheStartOfBlocks: false
-MaxEmptyLinesToKeep: 1
 NamespaceIndentation: None
 ObjCSpaceAfterProperty: false
 ObjCSpaceBeforeProtocolList: false
@@ -70,18 +80,25 @@ PenaltyBreakString: 1000
 PenaltyExcessCharacter: 1000000
 PenaltyReturnTypeOnItsOwnLine: 200
 PointerAlignment: Left
-ReflowComments:  true
-SortIncludes:    true
+ReflowComments: true
+RequiresClausePosition: OwnLine
+SortIncludes: true
 SpaceAfterCStyleCast: false
 SpaceBeforeAssignmentOperators: true
 SpaceBeforeParens: ControlStatements
 SpaceInEmptyParentheses: false
 SpacesBeforeTrailingComments: 2
-SpacesInAngles:  false
+SpacesInAngles: false
 SpacesInContainerLiterals: true
 SpacesInCStyleCastParentheses: false
 SpacesInParentheses: false
 SpacesInSquareBrackets: false
-Standard:        Cpp11
-TabWidth:        8
-UseTab:          Never
+Standard: Cpp11
+TabWidth: 8
+UseTab: Never
+QualifierAlignment: Right
+---
+Language: Proto
+BasedOnStyle: Google
+ColumnLimit: 0
+IndentWidth: 2
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -0,0 +1,126 @@
+---
+Checks: "-*,
+  bugprone-*,
+  -bugprone-easily-swappable-parameters,
+  -bugprone-exception-escape,
+  -bugprone-implicit-widening-of-multiplication-result,
+  -bugprone-narrowing-conversions,
+  -bugprone-throwing-static-initialization,
+
+  cppcoreguidelines-*,
+  -cppcoreguidelines-avoid-c-arrays,
+  -cppcoreguidelines-avoid-const-or-ref-data-members,
+  -cppcoreguidelines-avoid-do-while,
+  -cppcoreguidelines-avoid-magic-numbers,
+  -cppcoreguidelines-avoid-non-const-global-variables,
+  -cppcoreguidelines-c-copy-assignment-signature,
+  -cppcoreguidelines-interfaces-global-init,
+  -cppcoreguidelines-macro-usage,
+  -cppcoreguidelines-missing-std-forward,
+  -cppcoreguidelines-narrowing-conversions,
+  -cppcoreguidelines-noexcept-move-operations,
+  -cppcoreguidelines-non-private-member-variables-in-classes,
+  -cppcoreguidelines-owning-memory,
+  -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
+  -cppcoreguidelines-pro-bounds-avoid-unchecked-container-access,
+  -cppcoreguidelines-pro-bounds-constant-array-index,
+  -cppcoreguidelines-pro-bounds-pointer-arithmetic,
+  -cppcoreguidelines-pro-type-reinterpret-cast,
+  -cppcoreguidelines-pro-type-union-access,
+  -cppcoreguidelines-special-member-functions,
+
+  llvm-namespace-comment,
+
+  misc-*,
+  -misc-multiple-inheritance,
+  -misc-no-recursion,
+  -misc-non-private-member-variables-in-classes,
+  -misc-override-with-different-visibility,
+  -misc-unused-parameters,
+  -misc-use-anonymous-namespace,
+  -misc-use-internal-linkage,
+
+  modernize-*,
+  -modernize-avoid-c-arrays,
+  -modernize-avoid-c-style-cast,
+  -modernize-return-braced-init-list,
+  -modernize-use-integer-sign-comparison,
+  -modernize-use-trailing-return-type,
+
+  performance-*,
+  -performance-avoid-endl,
+  -performance-enum-size,
+  -performance-noexcept-move-constructor,
+  -performance-unnecessary-copy-initialization,
+  -performance-unnecessary-value-param,
+
+  readability-*,
+  -readability-avoid-const-params-in-decls,
+  -readability-container-data-pointer,
+  -readability-function-cognitive-complexity,
+  -readability-identifier-length,
+  -readability-inconsistent-declaration-parameter-name,
+  -readability-isolate-declaration,
+  -readability-magic-numbers,
+  -readability-named-parameter,
+  -readability-qualified-auto,
+  -readability-redundant-access-specifiers,
+  -readability-static-accessed-through-instance,
+  -readability-uppercase-literal-suffix
+  "
+# ---
+# bugprone-narrowing-conversions,                      # This will break a lot of code but we should enable it in the future because it can eliminate a lot of bugs
+# misc-override-with-different-visibility,             # Will be addressed in a future PR, but for now it generates too many warnings
+# readability-inconsistent-declaration-parameter-name, # In this codebase this check will break a lot of arg names
+# readability-static-accessed-through-instance,        # this check is probably unnecessary. It makes the code less readable
+# ---
+
+FormatStyle: file
+
+CheckOptions:
+  bugprone-unsafe-functions.ReportMoreUnsafeFunctions: true
+  bugprone-unused-return-value.CheckedReturnTypes: ::std::error_code;::std::error_condition;::std::errc
+
+  misc-include-cleaner.IgnoreHeaders: ".*/(detail|impl)/.*;.*fwd\\.h(pp)?;time.h;stdlib.h;sqlite3.h;netinet/in\\.h;sys/resource\\.h;sys/sysinfo\\.h;linux/sysinfo\\.h;__chrono/.*;bits/.*;_abort\\.h;boost/.*;openssl/obj_mac\\.h"
+
+  readability-braces-around-statements.ShortStatementLines: 2
+  readability-identifier-naming.MacroDefinitionCase: UPPER_CASE
+  readability-identifier-naming.NamespaceCase: lower_case
+  readability-identifier-naming.InlineNamespaceCase: lower_case
+  readability-identifier-naming.ClassCase: CamelCase
+  readability-identifier-naming.StructCase: CamelCase
+  readability-identifier-naming.UnionCase: CamelCase
+  readability-identifier-naming.EnumCase: CamelCase
+  readability-identifier-naming.EnumConstantCase: CamelCase
+  readability-identifier-naming.ScopedEnumConstantCase: CamelCase
+  readability-identifier-naming.GlobalConstantCase: CamelCase
+  readability-identifier-naming.GlobalConstantPrefix: "k"
+  readability-identifier-naming.GlobalVariableCase: CamelCase
+  readability-identifier-naming.GlobalVariablePrefix: "g"
+  readability-identifier-naming.ConstexprFunctionCase: camelBack
+  readability-identifier-naming.ConstexprMethodCase: camelBack
+  readability-identifier-naming.ClassMethodCase: camelBack
+  readability-identifier-naming.ClassMemberCase: camelBack
+  readability-identifier-naming.ClassConstantCase: CamelCase
+  readability-identifier-naming.ClassConstantPrefix: "k"
+  readability-identifier-naming.StaticConstantCase: CamelCase
+  readability-identifier-naming.StaticConstantPrefix: "k"
+  readability-identifier-naming.StaticVariableCase: camelBack
+  readability-identifier-naming.ConstexprVariableCase: camelBack
+  readability-identifier-naming.LocalConstantCase: camelBack
+  readability-identifier-naming.LocalVariableCase: camelBack
+  readability-identifier-naming.TemplateParameterCase: CamelCase
+  readability-identifier-naming.ParameterCase: camelBack
+  readability-identifier-naming.FunctionCase: camelBack
+  readability-identifier-naming.MemberCase: camelBack
+  readability-identifier-naming.PrivateMemberCase: camelBack
+  readability-identifier-naming.PrivateMemberSuffix: _
+  readability-identifier-naming.ProtectedMemberCase: camelBack
+  readability-identifier-naming.ProtectedMemberSuffix: _
+  readability-identifier-naming.PublicMemberCase: camelBack
+  readability-identifier-naming.PublicMemberSuffix: ""
+  readability-identifier-naming.GlobalFunctionIgnoredRegexp: "^(to_string|hash_append|tuple_hash)$"
+
+HeaderFilterRegex: '^.*/(tests?|xrpl|xrpld)/.*\.(h|hpp|ipp)$'
+ExcludeHeaderFilterRegex: '^.*/protocol_autogen/.*\.(h|hpp)$'
+WarningsAsErrors: "*"
--- a/.codecov.yml
+++ b/.codecov.yml
@@ -1,6 +1,70 @@
-
 codecov:
-  ci:
-    - ci.ops.ripple.com  # add custom jenkins server
-    - !appveyor
-    - !travis
+  require_ci_to_pass: true
+  # The C++ and Rust uploads land minutes apart; without this gate Codecov
+  # publishes a near-zero total from whichever one arrives first.
+  notify:
+    after_n_builds: 2
+    wait_for_ci: true
+
+comment:
+  behavior: default
+  layout: reach,diff,flags,tree,reach
+  show_carryforward_flags: true
+  after_n_builds: 2
+
+# C++ and Rust coverage upload from independent workflows under the `cpp` and
+# `rust` flags; carryforward keeps one language's total when only the other reran.
+flag_management:
+  default_rules:
+    carryforward: true
+  individual_flags:
+    - name: cpp
+      carryforward: true
+      paths:
+        - include/
+        - src/
+    - name: rust
+      carryforward: true
+      paths:
+        - crates/
+
+coverage:
+  range: "70..85"
+  precision: 1
+  round: nearest
+  status:
+    project:
+      default:
+        target: 75%
+        threshold: 2%
+    patch:
+      default:
+        target: auto
+        threshold: 2%
+    changes: false
+
+github_checks:
+  annotations: true
+
+parsers:
+  cobertura:
+    partials_as_hits: true
+    handle_missing_conditions: true
+
+slack_app: false
+
+ignore:
+  - "src/test/"
+  - "src/tests/"
+  - "include/xrpl/beast/test/"
+  - "include/xrpl/beast/unit_test/"
+  # Telemetry modules — conditionally compiled behind XRPL_ENABLE_TELEMETRY,
+  # which is not enabled in coverage builds.
+  - "src/xrpld/telemetry/"
+  - "src/libxrpl/telemetry/"
+  - "include/xrpl/telemetry/"
+  - "src/libxrpl/beast/insight/OTelCollector.cpp"
+  - "include/xrpl/beast/insight/OTelCollector.h"
+  # Per-module span-name constant headers (compile-time constants only,
+  # colocated with their subsystem rather than under telemetry/).
+  - "**/*SpanNames.h"
--- a/.cspell.config.yaml
+++ b/.cspell.config.yaml
@@ -0,0 +1,431 @@
+ignorePaths:
+  - build/**
+  - src/libxrpl/crypto
+  - CMakeUserPresets.json
+  - Doxyfile
+  - docs/**/*.puml
+  - cmake/**
+  - LICENSE.md
+  - .clang-tidy
+  - nix/check-tools/*.txt # generated, and full of Nix store hashes
+language: en
+allowCompoundWords: true # TODO (#6334)
+ignoreRandomStrings: true
+minWordLength: 5
+dictionaries:
+  - cpp
+  - en_US
+  - en_GB
+ignoreRegExpList:
+  - /\b[rs][1-9A-HJ-NP-Za-km-z]{25,34}/g # addresses and seeds
+  - /\bC[A-Z0-9]{15}/g # CTIDs
+  - /\bXRPL_METRIC_[A-Z_]+/g # telemetry macro names; the splitter emits subwords like ISTOGRAM
+  - /\b(XRPL|BEAST)_[A-Z_0-9]+_H_INCLUDED+/g # include guards
+  - /\b(XRPL|BEAST)_[A-Z_0-9]+_H+/g # include guards
+  - /::[a-z:_]+/g # things from other namespaces
+  - /\blib[a-z]+/g # libraries
+  - /\b[0-9]{4}-[0-9]{2}-[0-9]{2}[,:][A-Za-zÀ-ÖØ-öø-ÿ.\s]+/g # copyright dates
+  - /\b[0-9]{4}[,:]?\s*[A-Za-zÀ-ÖØ-öø-ÿ.\s]+/g # copyright years
+  - /\[[A-Za-z0-9-]+\]\(https:\/\/github.com\/[A-Za-z0-9-]+\)/g # Github usernames
+  - /-[DWw][a-zA-Z0-9_-]+=/g # compile flags
+  - /[\['"`]-[DWw][a-zA-Z0-9_-]+['"`\]]/g # compile flags
+  - ABCDEFGHIJKLMNOPQRSTUVWXYZ
+  - ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
+overrides:
+  - filename:
+      - "**/*_test.cpp" # legacy boost.test files
+      - "src/tests/**/*.cpp" # gtest test files
+    ignoreRegExpList:
+      - /"[^"]*"/g # double-quoted strings
+      - /'[^']*'/g # single-quoted strings
+      - /`[^`]*`/g # backtick strings
+suggestWords:
+  - unsynched->unsynced
+  - synched->synced
+  - synch->sync
+words:
+  - abempty
+  - AMMID
+  - AMMMPT
+  - AMMMPToken
+  - AMMMPTokens
+  - AMMXRP
+  - amt
+  - amts
+  - archs
+  - asnode
+  - asynchrony
+  - attestation
+  - authorises
+  - autobridge
+  - autobridged
+  - autobridging
+  - bimap
+  - bindir
+  - blindings
+  - bookdir
+  - Bougalis
+  - Britto
+  - Btrfs
+  - Buildx
+  - canonicality
+  - CGNAT
+  - canonicalised
+  - cctools
+  - changespq
+  - checkme
+  - choco
+  - chrono
+  - citardauq
+  - clawback
+  - clawbacks
+  - clippy
+  - cmaketoolchain
+  - coeffs
+  - coldwallet
+  - compr
+  - conanfile
+  - conanrun
+  - confs
+  - connectability
+  - coro
+  - coros
+  - cowid
+  - cpack
+  - cryptocondition
+  - cryptoconditional
+  - cryptoconditions
+  - csprng
+  - ctest
+  - ctid
+  - currenttxhash
+  - daria
+  - dcmake
+  - dearmor
+  - decryptor
+  - dedented
+  - Dedup
+  - dedup
+  - deleteme
+  - demultiplexer
+  - deserializaton
+  - desync
+  - desynced
+  - determ
+  - disablerepo
+  - distro
+  - doxyfile
+  - dsymutil
+  - dthms
+  - dxrpl
+  - elgamal
+  - enabled
+  - enablerepo
+  - endmacro
+  - envrc
+  - EOCFG
+  - exceptioned
+  - EXPECT_STREQ
+  - exfiltration
+  - Falco
+  - fcontext
+  - finalizers
+  - firewalled
+  - fmtdur
+  - fsanitize
+  - funclets
+  - Gamal
+  - gantt
+  - Gantt
+  - gcov
+  - gcovr
+  - ghead
+  - Gnutella
+  - godexsoft
+  - gpgcheck
+  - gpgkey
+  - havetxset
+  - Hinnant
+  - hotwallet
+  - hicpp
+  - htpasswd
+  - hwaddress
+  - hwrap
+  - ifndef
+  - inequation
+  - initialiser
+  - insuf
+  - insuff
+  - invasively
+  - iou
+  - ious
+  - isrdc
+  - isystem
+  - itype
+  - jemalloc
+  - jlog
+  - jmeter
+  - jtnofill
+  - keylet
+  - keylets
+  - keyvadb
+  - kwarg
+  - kwargs
+  - ledgerentry
+  - ledgerhash
+  - ledgerindex
+  - leftw
+  - legleux
+  - levelization
+  - levelized
+  - libpb
+  - libxrpl
+  - llection
+  - LOCALGOOD
+  - logql
+  - logwstream
+  - Lombrozo
+  - lresolv
+  - lseq
+  - lsmf
+  - ltype
+  - mathbunnyru
+  - mcmodel
+  - MEMORYSTATUSEX
+  - Merkle
+  - misprediction
+  - missingok
+  - MPTAMM
+  - mptbalance
+  - MPTDEX
+  - mptflags
+  - mptid
+  - mptissuance
+  - mptissuanceid
+  - mptissue
+  - mptoken
+  - mptokenid
+  - mptokenissuance
+  - mptokens
+  - mpts
+  - mtgox
+  - multisig
+  - multisign
+  - multisigned
+  - Nakamoto
+  - nftid
+  - nftoffer
+  - nftoken
+  - nftokenid
+  - nftokenpages
+  - nftokens
+  - nftpage
+  - nikb
+  - Nikolaos
+  - nixfmt
+  - nixos
+  - nixpkgs
+  - NETOP
+  - NOLINT
+  - NOLINTNEXTLINE
+  - nonxrp
+  - noreplace
+  - noripple
+  - nostd
+  - nostdinc
+  - notifempty
+  - nudb
+  - nullptr
+  - nunl
+  - Nyffenegger
+  - onlatest
+  - ostr
+  - otelc
+  - otelcol
+  - otool
+  - oxalica
+  - pargs
+  - partitioner
+  - paychan
+  - paychans
+  - Pedersen
+  - permdex
+  - perminute
+  - permissioned
+  - pgrep
+  - pkill
+  - pimpl
+  - pointee
+  - populator
+  - pratik
+  - preauth
+  - preauthorization
+  - preauthorize
+  - preauthorizes
+  - preclaim
+  - preun
+  - protobuf
+  - protos
+  - ptrs
+  - pushd
+  - pyenv
+  - pyparsing
+  - qalloc
+  - qbsprofile
+  - queuable
+  - ransitioned
+  - Raphson
+  - rcflags
+  - reparent
+  - replayer
+  - repodata
+  - repomd
+  - reqps
+  - rerandomize
+  - rerandomization
+  - rerandomized
+  - rerandomizes
+  - rerere
+  - retargeted
+  - retargets
+  - retriable
+  - RIPD
+  - ripdtop
+  - rippleci
+  - rippled
+  - ripplerpc
+  - rippletest
+  - RLUSD
+  - rngfill
+  - rocksdb
+  - Rohrs
+  - roundings
+  - rustc
+  - rustfmt
+  - rustup
+  - sahyadri
+  - sanitisation
+  - sanitise
+  - sanitised
+  - sanitiser
+  - sanitising
+  - Satoshi
+  - scons
+  - Schnorr
+  - secp
+  - sendq
+  - seqit
+  - sf
+  - SFIELD
+  - sfields
+  - shamap
+  - shamapitem
+  - shfmt
+  - shlibs
+  - sidechain
+  - SIGGOOD
+  - sle
+  - sles
+  - soci
+  - socidb
+  - Sonatype
+  - speciality
+  - sponsee
+  - sponsees
+  - SRPMS
+  - sslws
+  - statsd
+  - STATSDCOLLECTOR
+  - stissue
+  - stledgerentry
+  - stnum
+  - stobj
+  - stobject
+  - stpath
+  - stpathset
+  - sttx
+  - stvar
+  - stvector
+  - stxchainattestations
+  - summands
+  - superpeer
+  - superpeers
+  - Swatinem
+  - synthesise
+  - takergets
+  - takerpays
+  - ters
+  - TMEndpointv2
+  - toolchain
+  - tparam
+  - traceql
+  - trixie
+  - tx
+  - txid
+  - txids
+  - txjson
+  - txn
+  - txns
+  - txqueue
+  - txs
+  - txset
+  - ubsan
+  - UBSAN
+  - ufdio
+  - umant
+  - unacquired
+  - unambiguity
+  - unauthorizes
+  - unauthorizing
+  - unergonomic
+  - unfetched
+  - unfindable
+  - unflatten
+  - unfund
+  - unheld
+  - unimpair
+  - unroutable
+  - unscalable
+  - unserviced
+  - unshareable
+  - unshares
+  - unsponsored
+  - unsquelch
+  - unsquelched
+  - unsquelching
+  - unstored
+  - unsuffixed
+  - unvalidated
+  - unveto
+  - unvetoed
+  - upvotes
+  - USDB
+  - utilisation
+  - variadics
+  - venv
+  - vfalco
+  - vinnie
+  - wasmi
+  - werror
+  - wextra
+  - wptr
+  - writeme
+  - wsrch
+  - wthread
+  - xbridge
+  - xchain
+  - xcrun
+  - ximinez
+  - XMACRO
+  - xored
+  - xrpkuwait
+  - xrpl
+  - xrpld
+  - xrplf
+  - xxhash
+  - xxhasher
+  - xychart
+  - zpages
+  - zstdio
+  - ripplex
+  - mseconds
--- a/.envrc
+++ b/.envrc
@@ -0,0 +1,7 @@
+watch_file nix/*.nix
+
+# The dev shell derivation includes all of conan/ (see nix/devshell.nix), so any
+# change in there has to invalidate direnv's cached environment.
+watch_dir conan
+
+use flake
--- a/.gersemi/definitions.cmake
+++ b/.gersemi/definitions.cmake
@@ -0,0 +1,110 @@
+# Custom CMake command definitions for gersemi formatting.
+# These stubs teach gersemi the signatures of project-specific commands
+# so it can format their invocations correctly.
+
+function(git_branch branch_val)
+endfunction()
+
+function(isolate_headers target A B scope)
+endfunction()
+
+function(create_symbolic_link target link)
+endfunction()
+
+function(xrpl_add_benchmark name)
+endfunction()
+
+macro(exclude_from_default target_)
+endmacro()
+
+macro(exclude_if_included target_)
+endmacro()
+
+function(target_protobuf_sources target prefix)
+    set(options APPEND_PATH DESCRIPTORS)
+    set(oneValueArgs
+        LANGUAGE
+        OUT_VAR
+        EXPORT_MACRO
+        TARGET
+        PROTOC_OUT_DIR
+        PLUGIN
+        PLUGIN_OPTIONS
+        PROTOC_EXE
+    )
+    set(multiValueArgs
+        PROTOS
+        IMPORT_DIRS
+        GENERATE_EXTENSIONS
+        PROTOC_OPTIONS
+        DEPENDENCIES
+    )
+    cmake_parse_arguments(
+        THIS_FUNCTION_PREFIX
+        "${options}"
+        "${oneValueArgs}"
+        "${multiValueArgs}"
+        ${ARGN}
+    )
+endfunction()
+
+function(add_module parent name)
+endfunction()
+
+function(verify_target_headers target headers_dir)
+endfunction()
+
+function(_verify_add_headers target dir)
+endfunction()
+
+function(setup_protocol_autogen)
+endfunction()
+
+function(target_link_modules parent scope)
+endfunction()
+
+function(setup_target_for_coverage_gcovr)
+    set(options NONE)
+    set(oneValueArgs BASE_DIRECTORY NAME FORMAT)
+    set(multiValueArgs EXCLUDE EXECUTABLE EXECUTABLE_ARGS DEPENDENCIES)
+    cmake_parse_arguments(
+        THIS_FUNCTION_PREFIX
+        "${options}"
+        "${oneValueArgs}"
+        "${multiValueArgs}"
+        ${ARGN}
+    )
+endfunction()
+
+function(add_code_coverage_to_target name scope)
+endfunction()
+
+function(verbose_find_path variable name)
+    set(options
+        NO_CACHE
+        REQUIRED
+        OPTIONAL
+        NO_DEFAULT_PATH
+        NO_PACKAGE_ROOT_PATH
+        NO_CMAKE_PATH
+        NO_CMAKE_ENVIRONMENT_PATH
+        NO_SYSTEM_ENVIRONMENT_PATH
+        NO_CMAKE_SYSTEM_PATH
+        NO_CMAKE_INSTALL_PREFIX
+        CMAKE_FIND_ROOT_PATH_BOTH
+        ONLY_CMAKE_FIND_ROOT_PATH
+        NO_CMAKE_FIND_ROOT_PATH
+    )
+    set(oneValueArgs REGISTRY_VIEW VALIDATOR DOC)
+    set(multiValueArgs NAMES HINTS PATHS PATH_SUFFIXES)
+    cmake_parse_arguments(
+        THIS_FUNCTION_PREFIX
+        "${options}"
+        "${oneValueArgs}"
+        "${multiValueArgs}"
+        ${ARGN}
+    )
+endfunction()
+
+function(patch_nix_binary target)
+endfunction()
--- a/.gersemirc
+++ b/.gersemirc
@@ -0,0 +1 @@
+definitions: [.gersemi]
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,81 @@
+# This feature requires Git >= 2.24
+# To use it by default in git blame:
+# git config blame.ignoreRevsFile .git-blame-ignore-revs
+
+# This file is sorted in reverse chronological order, with the most recent commits at the top.
+# The commits listed here are ignored by git blame, which is useful for formatting-only commits that would otherwise obscure the history of changes to a file.
+
+# refactor: Enable clang-tidy `readability-identifier-naming` check (#6571)
+8995564ed6b9e453e144bb663303072a3c1ba305
+# refactor: Enable remaining clang-tidy `cppcoreguidelines` checks (#6538)
+72f4cb097f626b08b02fc3efcb4aa11cb2e7adb8
+# refactor: Rename system name from 'ripple' to 'xrpld' (#6347)
+ffea3977f0b771fe8e43a8f74e4d393d63a7afd8
+# refactor: Update transaction folder structure (#6483)
+5865bd017f777491b4a956f9210be0c4161f5442
+# chore: Use gersemi instead of ancient cmake-format (#6486)
+0c74270b055133a57a497b5c9fc5a75f7647b1f4
+# chore: Apply clang-format width 100 (#6387)
+2c1fad102353e11293e3edde1c043224e7d3e983
+# chore: Set clang-format width to 100 in config file (#6387)
+25cca465538a56cce501477f9e5e2c1c7ea2d84c
+# chore: Set cmake-format width to 100 (#6386)
+469ce9f291a4480c38d4ee3baca5136b2f053cd0
+# refactor: Modularize app/tx (#6228)
+0976b2b68b64972af8e6e7c497900b5bce9fe22f
+# chore: Update clang-format to 21.1.8 (#6352)
+958d8f375453d80bb1aa4c293b5102c045a3e4b4
+# refactor: Replace include guards by '#pragma once' (#6322)
+34ef577604782ca8d6e1c17df8bd7470990a52ff
+# chore: Format all cmake files without comments (#6294)
+fe9c8d568fcf6ac21483024e01f58962dd5c8260
+# chore: Add cmake-format pre-commit hook (#6279)
+a0e09187b9370805d027c611a7e9ff5a0125282a
+# chore: Set ColumnLimit to 120 in clang-format (#6288)
+5f638f55536def0d88b970d1018a465a238e55f4
+# refactor: Fix typos in comments, configure cspell (#6164)
+3c9f5b62525cb1d6ca1153eeb10433db7d7379fd
+# refactor: Rename `rippled.cfg` to `xrpld.cfg` (#6098)
+3d1b3a49b3601a0a7037fa0b19d5df7b5e0e2fc1
+# refactor: Rename `ripple` namespace to `xrpl` (#5982)
+1eb0fdac6543706b4b9ddca57fd4102928a1f871
+# refactor: Rename `rippled` binary to `xrpld` (#5983)
+9eb84a561ef8bb066d89f098bd9b4ac71baed67c
+# refactor: Replaces secp256k1 source by Conan package (#6089)
+813bc4d9491b078bb950f8255f93b02f71320478
+# refactor: Remove unnecessary copyright notices already covered by LICENSE.md (#5929)
+1d42c4f6de6bf01d1286fc7459b17a37a5189e88
+# refactor: Rename `RIPPLE_` and `RIPPLED_` definitions to `XRPL_` (#5821)
+ada83564d894829424b0f4d922b0e737e07abbf7
+# refactor: Modularize shamap and nodestore (#5668)
+8eb233c2ea8ad5a159be73b77f0f5e1496d547ac
+# refactor: Modularise ledger (#5493)
+dc8b37a52448b005153c13a7f046ad494128cf94
+# chore: Update clang-format and prettier with pre-commit (#5709)
+c14ce956adeabe476ad73c18d73103f347c9c613
+# chore: Fix file formatting (#5718)
+896b8c3b54a22b0497cb0d1ce95e1095f9a227ce
+# chore: Reverts formatting changes to external files, adds formatting changes to proto files (#5711)
+b13370ac0d207217354f1fc1c29aef87769fb8a1
+# chore: Run prettier on all files (#5657)
+97f0747e103f13e26e45b731731059b32f7679ac
+# Reformat code with clang-format-18
+552377c76f55b403a1c876df873a23d780fcc81c
+# Recompute loops (#4997)
+d028005aa6319338b0adae1aebf8abe113162960
+# Rewrite includes (#4997)
+1d23148e6dd53957fcb6205c07a5c6cd7b64d50c
+# Rearrange sources (#4997)
+e416ee72ca26fa0c09d2aee1b68bdfb2b7046eed
+# Move CMake directory (#4997)
+2e902dee53aab2a8f27f32971047bb81e022f94f
+# Rewrite includes
+0eebe6a5f4246fced516d52b83ec4e7f47373edd
+# Format formerly .hpp files
+760f16f56835663d9286bd29294d074de26a7ba6
+# Rename .hpp to .h
+241b9ddde9e11beb7480600fd5ed90e1ef109b21
+# Consolidate external libraries
+e2384885f5f630c8f0ffe4bf21a169b433a16858
+# Format first-party source according to .clang-format
+50760c693510894ca368e90369b0cc2dabfd07f3
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,9 +1,6 @@
 # Set default behaviour, in case users don't have core.autocrlf set.
 #* text=auto
-
-# These annoying files
-rippled.1 binary
-LICENSE binary
+# cspell: disable

 # Visual Studio
 *.sln       text eol=crlf
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -0,0 +1,36 @@
+---
+name: Bug Report
+about: Create a report to help us improve xrpld
+title: "[Title with short description] (Version: [xrpld version])"
+labels: ""
+assignees: ""
+---
+
+<!-- Please search existing issues to avoid creating duplicates.-->
+
+## Issue Description
+
+<!--Provide a summary for your issue/bug.-->
+
+## Steps to Reproduce
+
+<!--List in detail the exact steps to reproduce the unexpected behavior of the software.-->
+
+## Expected Result
+
+<!--Explain in detail what behavior you expected to happen.-->
+
+## Actual Result
+
+<!--Explain in detail what behavior actually happened.-->
+
+## Environment
+
+<!--Please describe your environment setup (such as Ubuntu 18.04 with Boost 1.70).-->
+<!-- If you are using a formal release, please use the version returned by './xrpld --version' as the version number-->
+<!-- If you are working off of develop, please add the git hash via 'git rev-parse HEAD'-->
+
+## Supporting Files
+
+<!--If you have supporting files such as a log, feel free to post a link here using Github Gist.-->
+<!--Consider adding configuration files with private information removed via Github Gist. -->
--- a/.github/ISSUE_TEMPLATE/config.yml
+++ b/.github/ISSUE_TEMPLATE/config.yml
@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: XRP Ledger Documentation
+    url: https://xrpl.org/
+    about: All things about XRPL
+  - name: Security bug bounty program
+    url: https://ripple.com/bug-bounty/
+    about: Please report security-relevant bugs in our software here.
--- a/.github/ISSUE_TEMPLATE/feature_request.md
+++ b/.github/ISSUE_TEMPLATE/feature_request.md
@@ -0,0 +1,25 @@
+---
+name: Feature Request
+about: Suggest a new feature for the xrpld project
+title: "[Title with short description] (Version: [xrpld version])"
+labels: Feature Request
+assignees: ""
+---
+
+<!-- Please search existing issues to avoid creating duplicates.-->
+
+## Summary
+
+<!-- Provide a summary to the feature request-->
+
+## Motivation
+
+<!-- Why do we need this feature?-->
+
+## Solution
+
+<!-- What is the solution?-->
+
+## Paths Not Taken
+
+<!-- What other alternatives have been considered?-->
--- a/.github/actions/build-deps/action.yml
+++ b/.github/actions/build-deps/action.yml
@@ -0,0 +1,47 @@
+name: Build Conan dependencies
+description: "Install Conan dependencies, optionally forcing a rebuild of all dependencies."
+
+# Note that actions do not support 'type' and all inputs are strings, see
+# https://docs.github.com/en/actions/reference/workflows-and-actions/metadata-syntax#inputs.
+inputs:
+  build_type:
+    description: 'The build type to use ("Debug", "Release").'
+    required: true
+  build_nproc:
+    description: "The number of processors to use for building."
+    required: true
+  force_build:
+    description: 'Force building of all dependencies ("true", "false").'
+    required: false
+    default: "false"
+  log_verbosity:
+    description: "The logging verbosity."
+    required: false
+    default: "verbose"
+  sanitizers:
+    description: "The sanitizers to enable."
+    required: false
+    default: ""
+
+runs:
+  using: composite
+  steps:
+    - name: Install Conan dependencies
+      shell: bash
+      env:
+        BUILD_NPROC: ${{ inputs.build_nproc }}
+        BUILD_OPTION: ${{ inputs.force_build == 'true' && '*' || 'missing' }}
+        BUILD_TYPE: ${{ inputs.build_type }}
+        LOG_VERBOSITY: ${{ inputs.log_verbosity }}
+        SANITIZERS: ${{ inputs.sanitizers }}
+      run: |
+        conan install \
+            --profile:all ci \
+            --build="${BUILD_OPTION}" \
+            --options:host='&:tests=True' \
+            --options:host='&:xrpld=True' \
+            --settings:all build_type="${BUILD_TYPE}" \
+            --conf:all tools.build:jobs=${BUILD_NPROC} \
+            --conf:all tools.build:verbosity="${LOG_VERBOSITY}" \
+            --conf:all tools.compilation:verbosity="${LOG_VERBOSITY}" \
+            .
--- a/.github/actions/release-info/action.yml
+++ b/.github/actions/release-info/action.yml
@@ -0,0 +1,90 @@
+name: Release info
+description: "Derive the version, release channel and package release number for this build."
+
+outputs:
+  version:
+    description: "The build version number."
+    value: ${{ steps.version.outputs.version }}
+  channel:
+    description: "The release channel this build belongs to."
+    value: ${{ steps.channel.outputs.channel }}
+  pkg_release:
+    description: "The package release number: 1 for a tag, the run number otherwise."
+    value: ${{ steps.pkg_release.outputs.pkg_release }}
+
+runs:
+  using: composite
+  steps:
+    # A tag names its own version. Anything else takes it from BuildInfo.cpp and
+    # appends the commit hash as build metadata, joined with a plus sign because a
+    # Conan version cannot contain two hyphens.
+    - name: Determine version
+      id: version
+      shell: bash
+      env:
+        IS_TAG: ${{ startsWith(github.ref, 'refs/tags/') }}
+        REF_NAME: ${{ github.ref_name }}
+        SHA: ${{ github.sha }}
+      run: |
+        if [[ "${IS_TAG}" == "true" ]]; then
+            version="${REF_NAME}"
+        else
+            version="$(awk -F'"' '/versionString =/ { print $2 }' src/libxrpl/protocol/BuildInfo.cpp)"
+            if [[ -z "${version}" ]]; then
+                echo "Unable to read versionString from BuildInfo.cpp." >&2
+                exit 1
+            fi
+            version="${version}+${SHA:0:7}"
+        fi
+
+        echo "version=${version}" | tee -a "${GITHUB_OUTPUT}"
+
+    # Only a tag says how mature a build is: a push is a develop build whatever
+    # its version, and a non-public codebase keeps its packages to itself.
+    - name: Determine release channel
+      id: channel
+      shell: bash
+      env:
+        IS_TAG: ${{ startsWith(github.ref, 'refs/tags/') }}
+        REF_NAME: ${{ github.ref_name }}
+        VISIBILITY: ${{ github.event.repository.visibility }}
+      run: |
+        pre_release=""
+        if [[ "${REF_NAME}" == *-* ]]; then
+            pre_release="${REF_NAME#*-}"
+        fi
+
+        if [[ "${VISIBILITY}" != "public" ]]; then
+            channel=private
+        elif [[ "${IS_TAG}" != "true" ]]; then
+            channel=develop
+        elif [[ -z "${pre_release}" ]]; then
+            channel=stable
+        elif [[ "${pre_release}" =~ ^rc[0-9]+(\+.*)?$ ]]; then
+            channel=unstable
+        elif [[ "${pre_release}" =~ ^b(0|[1-9][0-9]*)(\+.*)?$ ]]; then
+            channel=experimental
+        else
+            echo "Unsupported pre-release in tag '${REF_NAME}'. Use bN or rcN." >&2
+            exit 1
+        fi
+
+        echo "channel=${channel}" | tee -a "${GITHUB_OUTPUT}"
+
+    # A tag is packaged once, so its release number is fixed at 1. Develop builds
+    # repeat the same version, so the run number is what makes each push an
+    # upgrade rather than a reinstall.
+    - name: Determine package release
+      id: pkg_release
+      shell: bash
+      env:
+        IS_TAG: ${{ startsWith(github.ref, 'refs/tags/') }}
+        RUN_NUMBER: ${{ github.run_number }}
+      run: |
+        if [[ "${IS_TAG}" == "true" ]]; then
+            pkg_release=1
+        else
+            pkg_release="${RUN_NUMBER}"
+        fi
+
+        echo "pkg_release=${pkg_release}" | tee -a "${GITHUB_OUTPUT}"
--- a/.github/actions/set-compiler-env/action.yml
+++ b/.github/actions/set-compiler-env/action.yml
@@ -0,0 +1,34 @@
+name: Set compiler environment
+description: "Set CC and CXX environment variables for the given compiler."
+
+inputs:
+  compiler:
+    description: 'The compiler to use ("gcc" or "clang").'
+    required: true
+
+runs:
+  using: composite
+
+  steps:
+    - name: Set CC and CXX for gcc
+      if: ${{ inputs.compiler == 'gcc' }}
+      shell: bash
+      run: |
+        echo "CC=gcc" >>"${GITHUB_ENV}"
+        echo "CXX=g++" >>"${GITHUB_ENV}"
+
+    - name: Set CC and CXX for clang
+      if: ${{ inputs.compiler == 'clang' }}
+      shell: bash
+      run: |
+        echo "CC=clang" >>"${GITHUB_ENV}"
+        echo "CXX=clang++" >>"${GITHUB_ENV}"
+
+    - name: Fail on unknown compiler
+      if: ${{ inputs.compiler != 'gcc' && inputs.compiler != 'clang' }}
+      shell: bash
+      env:
+        COMPILER: ${{ inputs.compiler }}
+      run: |
+        echo "Unknown compiler: $COMPILER" >&2
+        exit 1
--- a/.github/actions/setup-conan/action.yml
+++ b/.github/actions/setup-conan/action.yml
@@ -0,0 +1,49 @@
+name: Setup Conan
+description: "Set up Conan configuration, profile, and remote."
+
+inputs:
+  remote_name:
+    description: "The name of the Conan remote to use."
+    required: false
+    default: xrplf
+  remote_url:
+    description: "The URL of the Conan endpoint to use."
+    required: false
+    default: https://conan.xrplf.org/repository/conan/
+
+runs:
+  using: composite
+
+  steps:
+    - name: Apply custom configuration to global.conf
+      shell: bash
+      run: |
+        cat conan/global.conf ${{ runner.os == 'Linux' && '>>' || '>' }} $(conan config home)/global.conf
+
+    - name: Show global configuration
+      shell: bash
+      run: |
+        conan config show '*'
+
+    - name: Install profiles
+      shell: bash
+      run: |
+        conan config install conan/profiles/ -tf $(conan config home)/profiles/
+
+    - name: Show CI profile
+      shell: bash
+      run: |
+        conan profile show --profile ci
+
+    - name: Add a remote
+      shell: bash
+      env:
+        REMOTE_NAME: ${{ inputs.remote_name }}
+        REMOTE_URL: ${{ inputs.remote_url }}
+      run: |
+        conan remote add --index 0 --force "${REMOTE_NAME}" "${REMOTE_URL}"
+
+    - name: List remotes
+      shell: bash
+      run: |
+        conan remote list
--- a/.github/actions/setup-nix-env/action.yml
+++ b/.github/actions/setup-nix-env/action.yml
@@ -0,0 +1,69 @@
+name: Setup Nix environment
+description: "Build the flake's CI environment and put its tools on PATH."
+
+# The environment from nix/ci-env.nix, the same one the Linux CI images bake in
+# (see nix/docker). Exported onto PATH rather than entered with `nix develop`:
+# the composite actions below run plain `bash` and would escape a dev shell.
+
+runs:
+  using: composite
+
+  steps:
+    - name: Build the CI environment
+      id: build
+      shell: bash
+      env:
+        # --out-link doubles as a GC root for the length of the job.
+        OUT_LINK: ${{ runner.temp }}/xrpld-ci-env
+      run: |
+        # --extra-experimental-features: flakes may not be on in the runner's nix.conf.
+        nix --extra-experimental-features "nix-command flakes" \
+            build .#default --out-link "${OUT_LINK}" --print-build-logs
+        echo "path=$(readlink -f "${OUT_LINK}")" >>"${GITHUB_OUTPUT}"
+
+    - name: Export the environment
+      shell: bash
+      env:
+        ENV_PATH: ${{ steps.build.outputs.path }}
+      run: |
+        echo "${ENV_PATH}/bin" >>"${GITHUB_PATH}"
+
+        # Already KEY=VALUE per line. See `darwinEnv` in nix/ci-env.nix.
+        ENV_FILE="${ENV_PATH}/share/xrpld-ci-env/env"
+        if [ -f "${ENV_FILE}" ]; then
+            cat "${ENV_FILE}" >>"${GITHUB_ENV}"
+        fi
+
+        # XrplSanity.cmake otherwise rejects a Nix compiler as one that leaked.
+        echo "XRPL_DEVSHELL=ci-env" >>"${GITHUB_ENV}"
+
+        # Unlike the Linux nix images, macOS needs no SSL_CERT_FILE: it has its
+        # own trust store, and pinning would break TLS to hosts relying on it.
+
+        # Workspace-local, so `cleanup-workspace` clears it, but not the
+        # `.conan2` prepare-runner hands the system toolchain: that Conan is a
+        # different version, and the two would migrate each other's cache.
+        echo "CONAN_HOME=${{ github.workspace }}/.conan2-nix" >>"${GITHUB_ENV}"
+
+    # Config, profiles and remote, exactly as the dev shell sets them up on
+    # entry; the `setup-conan` action is skipped for this toolchain.
+    - name: Setup Conan
+      shell: bash
+      run: ./conan/init.sh
+
+    # `Check tools` runs later but swallows failures; a bad export would just
+    # build with the system toolchain.
+    - name: Verify the toolchain resolves into the Nix store
+      shell: bash
+      run: |
+        for tool in clang clang++ cmake ninja conan; do
+            path="$(command -v "${tool}" || true)"
+            echo "${tool} -> ${path:-<not found>}"
+            case "${path}" in
+                /nix/store/*) ;;
+                *)
+                    echo "::error::${tool} does not resolve into the Nix store"
+                    exit 1
+                    ;;
+            esac
+        done
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -0,0 +1,37 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directories:
+      - /
+      - .github/actions/build-deps/
+      - .github/actions/release-info/
+      - .github/actions/set-compiler-env/
+      - .github/actions/setup-conan/
+    schedule:
+      interval: weekly
+      day: monday
+      time: "04:00"
+      timezone: Etc/GMT
+    commit-message:
+      prefix: "ci: [DEPENDABOT] "
+    target-branch: develop
+    groups:
+      github-actions:
+        patterns:
+          - "*"
+
+  - package-ecosystem: cargo
+    directory: /crates
+    schedule:
+      interval: weekly
+      day: monday
+      time: "04:00"
+      timezone: Etc/GMT
+    commit-message:
+      prefix: "chore: [DEPENDABOT] "
+    target-branch: develop
+    open-pull-requests-limit: 10
+    groups:
+      rust-dependencies:
+        patterns:
+          - "*"
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -0,0 +1,69 @@
+<!--
+This PR template helps you write a good pull request description.
+Please feel free to include additional useful information even beyond what is requested below.
+
+If your branch is on a personal fork and has a name that allows it to
+run CI build/test jobs (e.g. "ci/foo"), remember to rename it BEFORE
+opening the PR. This avoids redundant test runs. Renaming
+the branch after opening the PR will close the PR.
+https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/managing-branches-in-your-repository/renaming-a-branch
+-->
+
+## High Level Overview of Change
+
+<!--
+Please include a summary of the changes.
+This may be a direct input to the release notes.
+If too broad, please consider splitting into multiple PRs.
+If there is a relevant task or issue, please link it here.
+-->
+
+### Context of Change
+
+<!--
+Please include the context of a change.
+If a bug fix, when was the bug introduced? What was the behavior?
+If a new feature, why was this architecture chosen? What were the alternatives?
+If a refactor, how is this better than the previous implementation?
+
+If there is a spec or design document for this feature, please link it here.
+-->
+
+### API Impact
+
+<!--
+Please check [x] relevant options, delete irrelevant ones.
+
+* If there is any impact to the public API methods (HTTP / WebSocket), please update https://github.com/xrplf/rippled/blob/develop/API-CHANGELOG.md
+  * Update API-CHANGELOG.md and add the change directly in this PR by pushing to your PR branch.
+* libxrpl: See https://github.com/XRPLF/rippled/blob/develop/docs/build/depend.md
+* Peer Protocol: See https://xrpl.org/peer-protocol.html
+-->
+
+- [ ] Public API: New feature (new methods and/or new fields)
+- [ ] Public API: Breaking change (in general, breaking changes should only impact the next api_version)
+- [ ] `libxrpl` change (any change that may affect `libxrpl` or dependents of `libxrpl`)
+- [ ] Peer protocol change (must be backward compatible or bump the peer protocol version)
+
+<!--
+## Before / After
+If relevant, use this section for an English description of the change at a technical level.
+If this change affects an API, examples should be included here.
+
+For performance-impacting changes, please provide these details:
+1. Is this a new feature, bug fix, or improvement to existing functionality?
+2. What behavior/functionality does the change impact?
+3. In what processing can the impact be measured? Be as specific as possible - e.g. RPC client call, payment transaction that involves LOB, AMM, caching, DB operations, etc.
+4. Does this change affect concurrent processing - e.g. does it involve acquiring locks, multi-threaded processing, or async processing?
+-->
+
+<!--
+## Test Plan
+If helpful, please describe the tests that you ran to verify your changes and provide instructions so that others can reproduce.
+This section may not be needed if your change includes thoroughly commented unit tests.
+-->
+
+<!--
+## Future Tasks
+For future tasks related to this PR.
+-->
--- a/.github/scripts/check-pr-description.py
+++ b/.github/scripts/check-pr-description.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+
+"""
+Checks that a pull request description has been customized from the
+pull_request_template.md. Exits with code 1 if the description is empty
+or identical to the template (ignoring HTML comments and whitespace).
+
+Usage:
+    python check-pr-description.py --template-file TEMPLATE --pr-body-file BODY
+"""
+
+import argparse
+import re
+import sys
+from pathlib import Path
+
+
+def normalize(text: str) -> str:
+    """Strip HTML comments, trim lines, and remove blank lines."""
+    # Remove HTML comments (possibly multi-line)
+    text = re.sub(r"<!--.*?-->", "", text, flags=re.DOTALL)
+    # Strip each line and drop empties
+    lines = [line.strip() for line in text.splitlines()]
+    lines = [line for line in lines if line]
+    return "\n".join(lines)
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(
+        description="Check that a PR description differs from the template."
+    )
+    parser.add_argument(
+        "--template-file",
+        type=Path,
+        required=True,
+        help="Path to the pull request template file.",
+    )
+    parser.add_argument(
+        "--pr-body-file",
+        type=Path,
+        required=True,
+        help="Path to a file containing the PR body text.",
+    )
+    args = parser.parse_args()
+
+    template_path: Path = args.template_file
+    pr_body_path: Path = args.pr_body_file
+
+    if not template_path.is_file():
+        print(f"::error::Template file {template_path} not found")
+        return 1
+
+    if not pr_body_path.is_file():
+        print(f"::error::PR body file {pr_body_path} not found")
+        return 1
+
+    template = template_path.read_text(encoding="utf-8")
+    pr_body = pr_body_path.read_text(encoding="utf-8")
+
+    # Check if the PR body is empty or whitespace-only
+    if not pr_body.strip():
+        print(
+            "::error::PR description is empty. "
+            "Please fill in the pull request template."
+        )
+        return 1
+
+    norm_template = normalize(template)
+    norm_pr_body = normalize(pr_body)
+
+    if norm_pr_body == norm_template:
+        print(
+            "::error::PR description (ignoring HTML comments) is identical"
+            " to the template. Please fill in the details of your change."
+            f"\n\nVisible template content:\n---\n{norm_template}\n---"
+            f"\n\nVisible PR description content:\n---\n{norm_pr_body}\n---"
+        )
+        return 1
+
+    print("PR description has been customized from the template.")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
--- a/.github/scripts/format-inline-bash.py
+++ b/.github/scripts/format-inline-bash.py
@@ -0,0 +1,403 @@
+#!/usr/bin/env python3
+
+"""
+Format embedded shell snippets using the shfmt hook configured in
+.pre-commit-config.yaml.
+
+Two shapes are recognised:
+
+* YAML workflow/action files: literal block-scalar runs (`run: |`) and
+  single-line runs (`run: some command`). A single-line run is upgraded to
+  a `run: |` block scalar if shfmt's output spans multiple lines.
+
+* Markdown files: ``` ```bash ``` fenced code blocks.
+
+Any block that shfmt cannot parse is skipped with a warning on stderr, so
+the file is left untouched and surrounding blocks still get formatted.
+
+For each occurrence the body is dedented, written to a temp .sh file,
+formatted via `pre-commit run shfmt --files <temp>` (falling back to
+`prek`), then re-indented and written back in place.
+
+When invoked without arguments, every .yml/.yaml under .github/ plus every
+.md file in the repo is scanned. When invoked with file arguments (the
+pre-commit case), only those files are processed.
+"""
+
+from __future__ import annotations
+
+import re
+import shutil
+import subprocess
+import sys
+import tempfile
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Union
+
+REPO = Path(__file__).resolve().parents[2]
+
+_HOOK_RUNNER = next((cmd for cmd in ("pre-commit", "prek") if shutil.which(cmd)), None)
+if _HOOK_RUNNER is None:
+    sys.exit("error: neither `pre-commit` nor `prek` found on PATH")
+
+RUN_BLOCK_RE = re.compile(r"^(?P<prefix>[ \t]*(?:- )?)run:[ \t]*\|[+-]?[ \t]*$")
+RUN_INLINE_RE = re.compile(
+    r"^(?P<prefix>[ \t]*(?:- )?)run:[ \t]+" r"(?P<value>(?!\|[+-]?[ \t]*$)\S.*?)[ \t]*$"
+)
+MD_BASH_OPEN_RE = re.compile(r"^(?P<indent>[ ]{0,3})`{3}bash[ \t]*$")
+MD_FENCE_CLOSE_RE = re.compile(r"^[ ]{0,3}`{3,}[ \t]*$")
+
+
+@dataclass(frozen=True)
+class BlockRun:
+    """A `run: |` block scalar; `body_start:body_end` slices into `lines`."""
+
+    body_start: int
+    body_end: int
+    body_indent: int
+
+
+@dataclass(frozen=True)
+class InlineRun:
+    """A single-line `run: value` at `line_idx`."""
+
+    line_idx: int
+    prefix: str
+    value: str
+
+
+@dataclass(frozen=True)
+class MdBashBlock:
+    """A markdown ``` ```bash ``` fenced code block.
+
+    `body_start:body_end` slices into the file's lines; `open_line_idx`
+    points at the opening fence line.
+    """
+
+    open_line_idx: int
+    body_start: int
+    body_end: int
+    body_indent: int
+
+
+RunItem = Union[BlockRun, InlineRun]
+
+
+def _scan_block_body(
+    lines: list[str], body_start: int, run_col: int
+) -> tuple[int | None, int]:
+    """Locate the body of a `run: |` block scalar starting at `body_start`.
+
+    Returns `(body_indent, scan_end)`. `scan_end` is the line index where the
+    outer scanner should resume. `body_indent` is `None` when no body is
+    present (the scalar is empty, or the next non-blank line has indent
+    `<= run_col`).
+    """
+    body_indent: int | None = None
+    scan_end = len(lines)
+    for idx in range(body_start, len(lines)):
+        line = lines[idx]
+        if line.strip() == "":
+            continue
+        indent = len(line) - len(line.lstrip(" "))
+        if body_indent is None:
+            if indent > run_col:
+                body_indent = indent
+            else:
+                scan_end = idx
+                break
+        elif indent < body_indent:
+            scan_end = idx
+            break
+    if body_indent is not None:
+        while scan_end > body_start and lines[scan_end - 1].strip() == "":
+            scan_end -= 1
+        if scan_end <= body_start:
+            body_indent = None
+    return body_indent, scan_end
+
+
+def find_run_blocks(lines: list[str]) -> list[RunItem]:
+    """Return run items in document order."""
+    items: list[RunItem] = []
+    line_idx = 0
+    while line_idx < len(lines):
+        line = lines[line_idx]
+        if block_match := RUN_BLOCK_RE.match(line):
+            run_col = len(block_match.group("prefix"))
+            body_start = line_idx + 1
+            body_indent, scan_end = _scan_block_body(lines, body_start, run_col)
+            if body_indent is not None:
+                items.append(
+                    BlockRun(
+                        body_start=body_start,
+                        body_end=scan_end,
+                        body_indent=body_indent,
+                    )
+                )
+            line_idx = scan_end
+            continue
+        if inline_match := RUN_INLINE_RE.match(line):
+            items.append(
+                InlineRun(
+                    line_idx=line_idx,
+                    prefix=inline_match.group("prefix"),
+                    value=inline_match.group("value"),
+                )
+            )
+        line_idx += 1
+    return items
+
+
+def find_md_bash_blocks(lines: list[str]) -> list[MdBashBlock]:
+    """Return ``` ```bash ``` fenced code blocks in document order."""
+    blocks: list[MdBashBlock] = []
+    line_idx = 0
+    while line_idx < len(lines):
+        open_match = MD_BASH_OPEN_RE.match(lines[line_idx])
+        if not open_match:
+            line_idx += 1
+            continue
+        body_start = line_idx + 1
+        close_idx = next(
+            (
+                j
+                for j in range(body_start, len(lines))
+                if MD_FENCE_CLOSE_RE.match(lines[j])
+            ),
+            None,
+        )
+        if close_idx is None:
+            line_idx = body_start
+            continue
+        body = lines[body_start:close_idx]
+        non_blank = [b for b in body if b.strip()]
+        body_indent = (
+            min(len(b) - len(b.lstrip(" ")) for b in non_blank)
+            if non_blank
+            else len(open_match.group("indent"))
+        )
+        blocks.append(
+            MdBashBlock(
+                open_line_idx=line_idx,
+                body_start=body_start,
+                body_end=close_idx,
+                body_indent=body_indent,
+            )
+        )
+        line_idx = close_idx + 1
+    return blocks
+
+
+def dedent(lines: list[str], n: int) -> list[str]:
+    pad = " " * n
+    return [
+        (
+            ""
+            if line.strip() == ""
+            else (line[n:] if line.startswith(pad) else line.lstrip(" "))
+        )
+        for line in lines
+    ]
+
+
+def reindent(lines: list[str], n: int) -> list[str]:
+    pad = " " * n
+    return [pad + line if line else "" for line in lines]
+
+
+_SHFMT_ERR_RE = re.compile(r"\.sh:\d+:\d+:\s")
+_GHA_EXPR_RE = re.compile(r"\$\{\{.*?\}\}", re.DOTALL)
+_GHA_PLACEHOLDER_RE = re.compile(r"__GHA_EXPR_(\d+)__")
+
+
+def _encode_gha_exprs(text: str) -> tuple[str, list[str]]:
+    """Replace `${{ ... }}` expressions with bash-safe placeholder identifiers."""
+    exprs: list[str] = []
+
+    def repl(match: re.Match[str]) -> str:
+        exprs.append(match.group(0))
+        return f"__GHA_EXPR_{len(exprs) - 1}__"
+
+    return _GHA_EXPR_RE.sub(repl, text), exprs
+
+
+def _decode_gha_exprs(text: str, exprs: list[str]) -> str:
+    """Restore `${{ ... }}` expressions from placeholder identifiers."""
+    return _GHA_PLACEHOLDER_RE.sub(lambda m: exprs[int(m.group(1))], text)
+
+
+def shfmt_via_hook(tmp_path: Path) -> tuple[bool, str]:
+    # `${{ ... }}` is not valid shell, so swap it for a placeholder identifier
+    # that shfmt can parse, then restore it after formatting.
+    encoded, exprs = _encode_gha_exprs(tmp_path.read_text())
+    if exprs:
+        tmp_path.write_text(encoded)
+    res = subprocess.run(
+        [_HOOK_RUNNER, "run", "shfmt", "--files", str(tmp_path)],
+        cwd=REPO,
+        capture_output=True,
+        text=True,
+    )
+    output = res.stdout + res.stderr
+    # shfmt emits parse errors as "<path>:<line>:<col>: <message>".
+    parse_err = bool(_SHFMT_ERR_RE.search(output))
+    # A non-zero exit that is neither a parse error nor pre-commit's "I had
+    # to modify files" signal means the hook itself failed to run (missing
+    # binary, install failure, bad config, ...). Surface that loudly rather
+    # than silently treating it as a no-op.
+    if (
+        res.returncode != 0
+        and not parse_err
+        and "files were modified by this hook" not in output
+    ):
+        sys.exit(
+            f"error: `{_HOOK_RUNNER} run shfmt` failed with exit {res.returncode}:\n{output}"
+        )
+    if exprs and not parse_err:
+        tmp_path.write_text(_decode_gha_exprs(tmp_path.read_text(), exprs))
+    return not parse_err, output
+
+
+def _skip(path: Path, where: int, kind: str, output: str) -> None:
+    print(
+        f"  shfmt could not parse {kind} at {path}:{where + 1} — skipped",
+        file=sys.stderr,
+    )
+    print(f"    {output.strip()}", file=sys.stderr)
+
+
+def process_yaml_file(path: Path, tmp_path: Path) -> int:
+    text = path.read_text()
+    had_nl = text.endswith("\n")
+    lines = text.split("\n")
+    if had_nl:
+        lines = lines[:-1]
+    items = find_run_blocks(lines)
+    if not items:
+        return 0
+    changed = 0
+    # Process in reverse so earlier indices remain valid as we splice.
+    for item in reversed(items):
+        if isinstance(item, BlockRun):
+            body = lines[item.body_start : item.body_end]
+            tmp_path.write_text("\n".join(dedent(body, item.body_indent)) + "\n")
+            ok, output = shfmt_via_hook(tmp_path)
+            if not ok:
+                _skip(path, item.body_start, "block", output)
+                continue
+            formatted = tmp_path.read_text().rstrip("\n")
+            new_body = reindent(formatted.split("\n"), item.body_indent)
+            if new_body != body:
+                lines[item.body_start : item.body_end] = new_body
+                changed += 1
+        else:
+            tmp_path.write_text(item.value + "\n")
+            ok, output = shfmt_via_hook(tmp_path)
+            if not ok:
+                _skip(path, item.line_idx, "inline run", output)
+                continue
+            formatted = tmp_path.read_text().rstrip("\n")
+            if formatted == item.value:
+                continue
+            formatted_lines = formatted.split("\n")
+            if len(formatted_lines) == 1:
+                lines[item.line_idx] = f"{item.prefix}run: {formatted}"
+            else:
+                body_indent = len(item.prefix) + 2
+                lines[item.line_idx : item.line_idx + 1] = [
+                    f"{item.prefix}run: |",
+                    *reindent(formatted_lines, body_indent),
+                ]
+            changed += 1
+    new_text = "\n".join(lines) + ("\n" if had_nl else "")
+    if new_text != text:
+        path.write_text(new_text)
+    return changed
+
+
+def process_md_file(path: Path, tmp_path: Path) -> int:
+    text = path.read_text()
+    had_nl = text.endswith("\n")
+    lines = text.split("\n")
+    if had_nl:
+        lines = lines[:-1]
+    blocks = find_md_bash_blocks(lines)
+    if not blocks:
+        return 0
+    changed = 0
+    for block in reversed(blocks):
+        body = lines[block.body_start : block.body_end]
+        tmp_path.write_text("\n".join(dedent(body, block.body_indent)) + "\n")
+        ok, output = shfmt_via_hook(tmp_path)
+        if not ok:
+            _skip(path, block.open_line_idx, "```bash block", output)
+            continue
+        formatted = tmp_path.read_text().rstrip("\n")
+        formatted_lines = formatted.split("\n") if formatted else []
+        new_body = reindent(formatted_lines, block.body_indent)
+        if new_body != body:
+            lines[block.body_start : block.body_end] = new_body
+            changed += 1
+    new_text = "\n".join(lines) + ("\n" if had_nl else "")
+    if new_text != text:
+        path.write_text(new_text)
+    return changed
+
+
+def process_file(path: Path, tmp_path: Path) -> int:
+    if path.suffix in (".yml", ".yaml"):
+        return process_yaml_file(path, tmp_path)
+    if path.suffix == ".md":
+        return process_md_file(path, tmp_path)
+    return 0
+
+
+def gather_files(argv: list[str]) -> list[Path]:
+    """Return YAML workflow/action files and markdown files that we should
+    process — either the paths in `argv` or, when `argv` is empty, every
+    such file in the repo (skipping `external/`)."""
+    if argv:
+        candidates: list[Path] = [
+            (REPO / a).resolve() if not Path(a).is_absolute() else Path(a) for a in argv
+        ]
+    else:
+        gh = REPO / ".github"
+        candidates = [
+            *gh.rglob("*.yml"),
+            *gh.rglob("*.yaml"),
+            *(
+                p
+                for p in REPO.rglob("*.md")
+                if "external" not in p.relative_to(REPO).parts
+            ),
+        ]
+    return sorted(
+        p
+        for p in candidates
+        if p.exists()
+        and (
+            (p.suffix in (".yml", ".yaml") and ".github" in p.parts)
+            or p.suffix == ".md"
+        )
+    )
+
+
+def main(argv: list[str]) -> int:
+    files = gather_files(argv)
+    if not files:
+        return 0
+    with tempfile.TemporaryDirectory(prefix="format-inline-bash-") as tmpdir:
+        tmp_path = Path(tmpdir) / "shfmt.sh"
+        total = 0
+        for f in files:
+            n = process_file(f, tmp_path)
+            if n:
+                print(f"{f.relative_to(REPO)}: reformatted {n} block(s)")
+                total += n
+        return 1 if total else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv[1:]))
--- a/.github/scripts/levelization/README.md
+++ b/.github/scripts/levelization/README.md
@@ -0,0 +1,134 @@
+# Levelization
+
+Levelization is the term used to describe efforts to prevent xrpld from
+having or creating cyclic dependencies.
+
+xrpld code is organized into directories under `src/xrpld`, `src/libxrpl` (and
+`src/test`) representing modules. The modules are intended to be
+organized into "tiers" or "levels" such that a module from one level can
+only include code from lower levels. Additionally, a module
+in one level should never include code in an `impl` or `detail` folder of any level
+other than its own.
+
+The codebase is split into two main areas:
+
+- **libxrpl** (`src/libxrpl`, `include/xrpl`): Reusable library modules with public interfaces
+- **xrpld** (`src/xrpld`): Application-specific implementation code
+
+Unfortunately, over time, enforcement of levelization has been
+inconsistent, so the current state of the code doesn't necessarily
+reflect these rules. Whenever possible, developers should refactor any
+levelization violations they find (by moving files or individual
+classes). At the very least, don't make things worse.
+
+The table below summarizes the _desired_ division of modules, based on the current
+state of the xrpld code. The levels are numbered from
+the bottom up with the lower level, lower numbered, more independent
+modules listed first, and the higher level, higher numbered modules with
+more dependencies listed later.
+
+**tl;dr:** The modules listed first are more independent than the modules
+listed later.
+
+## libxrpl Modules (Reusable Libraries)
+
+| Level / Tier | Module(s)                           |
+| ------------ | ----------------------------------- |
+| 01           | xrpl/beast                          |
+| 02           | xrpl/basics                         |
+| 03           | xrpl/json xrpl/crypto               |
+| 04           | xrpl/protocol                       |
+| 05           | xrpl/core xrpl/resource xrpl/server |
+| 06           | xrpl/ledger xrpl/nodestore xrpl/net |
+| 07           | xrpl/shamap xrpl/consensus          |
+
+## xrpld Modules (Application Implementation)
+
+| Level / Tier | Module(s)                   |
+| ------------ | --------------------------- |
+| 05           | xrpld/conditions            |
+| 06           | xrpld/core xrpld/peerfinder |
+| 07           | xrpld/shamap xrpld/overlay  |
+| 08           | xrpld/app                   |
+| 09           | xrpld/rpc                   |
+| 10           | xrpld/perflog               |
+
+## Test Modules
+
+| Level / Tier | Module(s)                                                                                                |
+| ------------ | -------------------------------------------------------------------------------------------------------- |
+| 11           | test/jtx test/beast test/csf                                                                             |
+| 12           | test/unit_test                                                                                           |
+| 13           | test/crypto test/conditions test/json test/resource test/shamap test/peerfinder test/basics test/overlay |
+| 14           | test                                                                                                     |
+| 15           | test/net test/protocol test/ledger test/consensus test/core test/server test/nodestore                   |
+| 16           | test/rpc test/app                                                                                        |
+
+(Note that `test` levelization is _much_ less important and _much_ less
+strictly enforced than `xrpl`/`xrpld` levelization, other than the requirement
+that `test` code should _never_ be included in `xrpl` or `xrpld` code.)
+
+## Validation
+
+The [levelization](generate.py) script takes no parameters,
+reads no environment variables, and can be run from any directory,
+as long as it is in the expected location in the xrpld repo.
+It can be run at any time from within a checked out repo, and will
+do an analysis of all the `#include`s in
+the xrpld source. The only caveat is that it runs much slower
+under Windows than in Linux. It hasn't yet been tested under MacOS.
+It generates many files of [results](results):
+
+- `rawincludes.txt`: The raw dump of the `#includes`
+- `paths.txt`: A second dump grouping the source module
+  to the destination module, de-duped, and with frequency counts.
+- `includes/`: A directory where each file represents a module and
+  contains a list of modules and counts that the module _includes_.
+- `included_by/`: Similar to `includes/`, but the other way around. Each
+  file represents a module and contains a list of modules and counts
+  that _include_ the module.
+- [`loops.txt`](results/loops.txt): A list of direct loops detected
+  between modules as they actually exist, as opposed to how they are
+  desired as described above. In a perfect repo, this file will be
+  empty.
+  This file is committed to the repo, and is used by the [levelization
+  Github workflow](../../workflows/reusable-check-levelization.yml) to validate
+  that nothing changed.
+- [`ordering.txt`](results/ordering.txt): A list showing relationships
+  between modules where there are no loops as they actually exist, as
+  opposed to how they are desired as described above.
+  This file is committed to the repo, and is used by the [levelization
+  Github workflow](../../workflows/reusable-check-levelization.yml) to validate
+  that nothing changed.
+- [`levelization.yml`](../../workflows/reusable-check-levelization.yml)
+  Github Actions workflow to test that levelization loops haven't
+  changed. Unfortunately, if changes are detected, it can't tell if
+  they are improvements or not, so if you have resolved any issues or
+  done anything else to improve levelization, run `generate.py`,
+  and commit the updated results.
+
+The `loops.txt` and `ordering.txt` files relate the modules
+using comparison signs, which indicate the number of times each
+module is included in the other.
+
+- `A > B` means that A should probably be at a higher level than B,
+  because B is included in A significantly more than A is included in B.
+  These results can be included in both `loops.txt` and `ordering.txt`.
+  Because `ordering.txt`only includes relationships where B is not
+  included in A at all, it will only include these types of results.
+- `A ~= B` means that A and B are included in each other a different
+  number of times, but the values are so close that the script can't
+  definitively say that one should be above the other. These results
+  will only be included in `loops.txt`.
+- `A == B` means that A and B include each other the same number of
+  times, so the script has no clue which should be higher. These results
+  will only be included in `loops.txt`.
+
+The committed files hide the detailed values intentionally, to
+prevent false alarms and merging issues, and because it's easy to
+get those details locally.
+
+1. Run `generate.py`
+2. Grep the modules in `paths.txt`.
+   - For example, if a cycle is found `A ~= B`, simply `grep -w
+A .github/scripts/levelization/results/paths.txt | grep -w B`
--- a/.github/scripts/levelization/generate.py
+++ b/.github/scripts/levelization/generate.py
@@ -0,0 +1,335 @@
+#!/usr/bin/env python3
+
+"""
+Usage: generate.py
+This script takes no parameters, and can be called from any directory in the file system.
+"""
+
+import os
+import re
+import subprocess
+import sys
+from collections import defaultdict
+from pathlib import Path
+from typing import Dict, List, Tuple, Set, Optional
+
+# Compile regex patterns once at module level
+INCLUDE_PATTERN = re.compile(r"^\s*#include.*/.*\.h")
+INCLUDE_PATH_PATTERN = re.compile(r'[<"]([^>"]+)[>"]')
+
+
+def dictionary_sort_key(s: str) -> str:
+    """
+    Create a sort key that mimics 'sort -d' (dictionary order).
+    Dictionary order only considers blanks and alphanumeric characters.
+    This means punctuation like '.' is ignored during sorting.
+    """
+    # Keep only alphanumeric characters and spaces
+    return "".join(c for c in s if c.isalnum() or c.isspace())
+
+
+def get_level(file_path: str) -> str:
+    """
+    Extract the level from a file path (second and third directory components).
+    Equivalent to bash: cut -d/ -f 2,3
+
+    Examples:
+        src/xrpld/app/main.cpp -> xrpld.app
+        src/libxrpl/protocol/STObject.cpp -> libxrpl.protocol
+        include/xrpl/basics/base_uint.h -> xrpl.basics
+    """
+    parts = file_path.split("/")
+
+    # Get fields 2 and 3 (indices 1 and 2 in 0-based indexing)
+    if len(parts) >= 3:
+        level = f"{parts[1]}/{parts[2]}"
+    elif len(parts) >= 2:
+        level = f"{parts[1]}/toplevel"
+    else:
+        level = file_path
+
+    # If the "level" indicates a file, cut off the filename
+    if "." in level.split("/")[-1]:  # Avoid Path object creation
+        # Use the "toplevel" label as a workaround for `sort`
+        # inconsistencies between different utility versions
+        level = level.rsplit("/", 1)[0] + "/toplevel"
+
+    return level.replace("/", ".")
+
+
+def extract_include_level(include_line: str) -> Optional[str]:
+    """
+    Extract the include path from an #include directive.
+    Gets the first two directory components from the include path.
+    Equivalent to bash: cut -d/ -f 1,2
+
+    Examples:
+        #include <xrpl/basics/base_uint.h> -> xrpl.basics
+        #include "xrpld/app/main/Application.h" -> xrpld.app
+    """
+    # Remove everything before the quote or angle bracket
+    match = INCLUDE_PATH_PATTERN.search(include_line)
+    if not match:
+        return None
+
+    include_path = match.group(1)
+    parts = include_path.split("/")
+
+    # Get first two fields (indices 0 and 1)
+    if len(parts) >= 2:
+        include_level = f"{parts[0]}/{parts[1]}"
+    else:
+        include_level = include_path
+
+    # If the "includelevel" indicates a file, cut off the filename
+    if "." in include_level.split("/")[-1]:  # Avoid Path object creation
+        include_level = include_level.rsplit("/", 1)[0] + "/toplevel"
+
+    return include_level.replace("/", ".")
+
+
+def find_repository_directories(
+    start_path: Path, depth_limit: int = 10
+) -> Tuple[Path, List[Path]]:
+    """
+    Find the repository root by looking for src or include folders.
+    Walks up the directory tree from the start path.
+    """
+    current = start_path.resolve()
+
+    # Walk up the directory tree
+    for _ in range(depth_limit):  # Limit search depth to prevent infinite loops
+        src_path = current / "src"
+        include_path = current / "include"
+        # Check if this directory has src or include folders
+        has_src = src_path.exists()
+        has_include = include_path.exists()
+
+        if has_src or has_include:
+            return current, [src_path, include_path]
+
+        # Move up one level
+        parent = current.parent
+        if parent == current:  # Reached filesystem root
+            break
+        current = parent
+
+    # If we couldn't find it, raise an error
+    raise RuntimeError(
+        "Could not find repository root. "
+        "Expected to find a directory containing 'src' and/or 'include' folders."
+    )
+
+
+def main():
+    # Change to the script's directory
+    script_dir = Path(__file__).parent.resolve()
+    os.chdir(script_dir)
+
+    # Clean up and create results directory.
+    results_dir = script_dir / "results"
+    if results_dir.exists():
+        import shutil
+
+        shutil.rmtree(results_dir)
+    results_dir.mkdir()
+
+    # Find the repository root by searching for src and include directories.
+    try:
+        repo_root, scan_dirs = find_repository_directories(script_dir)
+
+        print(f"Found repository root: {repo_root}")
+        print(f"Scanning directories:")
+        for scan_dir in scan_dirs:
+            print(f"  - {scan_dir.relative_to(repo_root)}")
+    except RuntimeError as e:
+        print(f"Error: {e}", file=sys.stderr)
+        sys.exit(1)
+
+    print("\nScanning for raw includes...")
+    # Find all #include directives
+    raw_includes: List[Tuple[str, str]] = []
+    rawincludes_file = results_dir / "rawincludes.txt"
+
+    # Write to file as we go to avoid storing everything in memory.
+    with open(rawincludes_file, "w", buffering=8192) as raw_f:
+        for dir_path in scan_dirs:
+            print(f"  Scanning {dir_path.relative_to(repo_root)}...")
+
+            for file_path in dir_path.rglob("*"):
+                if not file_path.is_file():
+                    continue
+
+                try:
+                    rel_path_str = str(file_path.relative_to(repo_root))
+
+                    # Read file with a large buffer for performance.
+                    with open(
+                        file_path,
+                        "r",
+                        encoding="utf-8",
+                        errors="ignore",
+                        buffering=8192,
+                    ) as f:
+                        for line in f:
+                            # Quick check before regex
+                            if "#include" not in line or "boost" in line:
+                                continue
+
+                            if INCLUDE_PATTERN.match(line):
+                                line_stripped = line.strip()
+                                entry = f"{rel_path_str}:{line_stripped}\n"
+                                print(entry, end="")
+                                raw_f.write(entry)
+                                raw_includes.append((rel_path_str, line_stripped))
+                except Exception as e:
+                    print(f"Error reading {file_path}: {e}", file=sys.stderr)
+
+    # Build levelization paths and count directly (no need to sort first).
+    print("Build levelization paths")
+    path_counts: Dict[Tuple[str, str], int] = defaultdict(int)
+
+    for file_path, include_line in raw_includes:
+        include_level = extract_include_level(include_line)
+        if not include_level:
+            continue
+
+        level = get_level(file_path)
+        if level != include_level:
+            path_counts[(level, include_level)] += 1
+
+    # Sort and deduplicate paths (using dictionary order like bash 'sort -d').
+    print("Sort and deduplicate paths")
+
+    paths_file = results_dir / "paths.txt"
+    with open(paths_file, "w") as f:
+        # Sort using dictionary order: only alphanumeric and spaces matter
+        sorted_items = sorted(
+            path_counts.items(),
+            key=lambda x: (dictionary_sort_key(x[0][0]), dictionary_sort_key(x[0][1])),
+        )
+        for (level, include_level), count in sorted_items:
+            line = f"{count:7} {level} {include_level}\n"
+            print(line.rstrip())
+            f.write(line)
+
+    # Split into flat-file database
+    print("Split into flat-file database")
+    includes_dir = results_dir / "includes"
+    included_by_dir = results_dir / "included_by"
+    includes_dir.mkdir()
+    included_by_dir.mkdir()
+
+    # Batch writes by grouping data first to avoid repeated file opens.
+    includes_data: Dict[str, List[Tuple[str, int]]] = defaultdict(list)
+    included_by_data: Dict[str, List[Tuple[str, int]]] = defaultdict(list)
+
+    # Process in sorted order to match bash script behaviour (dictionary order).
+    sorted_items = sorted(
+        path_counts.items(),
+        key=lambda x: (dictionary_sort_key(x[0][0]), dictionary_sort_key(x[0][1])),
+    )
+    for (level, include_level), count in sorted_items:
+        includes_data[level].append((include_level, count))
+        included_by_data[include_level].append((level, count))
+
+    # Write all includes files in sorted order (dictionary order).
+    for level in sorted(includes_data.keys(), key=dictionary_sort_key):
+        entries = includes_data[level]
+        with open(includes_dir / level, "w") as f:
+            for include_level, count in entries:
+                line = f"{include_level} {count}\n"
+                print(line.rstrip())
+                f.write(line)
+
+    # Write all included_by files in sorted order (dictionary order).
+    for include_level in sorted(included_by_data.keys(), key=dictionary_sort_key):
+        entries = included_by_data[include_level]
+        with open(included_by_dir / include_level, "w") as f:
+            for level, count in entries:
+                line = f"{level} {count}\n"
+                print(line.rstrip())
+                f.write(line)
+
+    # Search for loops
+    print("Search for loops")
+    loops_file = results_dir / "loops.txt"
+    ordering_file = results_dir / "ordering.txt"
+
+    loops_found: Set[Tuple[str, str]] = set()
+
+    # Pre-load all include files into memory to avoid repeated I/O.
+    # This is the biggest optimisation - we were reading files repeatedly in nested loops.
+    # Use list of tuples to preserve file order.
+    includes_cache: Dict[str, List[Tuple[str, int]]] = {}
+    includes_lookup: Dict[str, Dict[str, int]] = {}  # For fast lookup
+
+    # Note: bash script uses 'for source in *' which uses standard glob sorting,
+    # NOT dictionary order. So we use standard sorted() here, not dictionary_sort_key.
+    for include_file in sorted(includes_dir.iterdir(), key=lambda p: p.name):
+        if not include_file.is_file():
+            continue
+
+        includes_cache[include_file.name] = []
+        includes_lookup[include_file.name] = {}
+        with open(include_file, "r") as f:
+            for line in f:
+                parts = line.strip().split()
+                if len(parts) >= 2:
+                    include_name = parts[0]
+                    include_count = int(parts[1])
+                    includes_cache[include_file.name].append(
+                        (include_name, include_count)
+                    )
+                    includes_lookup[include_file.name][include_name] = include_count
+
+    with open(loops_file, "w", buffering=8192) as loops_f, open(
+        ordering_file, "w", buffering=8192
+    ) as ordering_f:
+
+        # Use standard sorting to match bash glob expansion 'for source in *'.
+        for source in sorted(includes_cache.keys()):
+            source_includes = includes_cache[source]
+
+            for include, include_freq in source_includes:
+                # Check if include file exists and references source
+                if include not in includes_lookup:
+                    continue
+
+                source_freq = includes_lookup[include].get(source)
+
+                if source_freq is not None:
+                    # Found a loop
+                    loop_key = tuple(sorted([source, include]))
+                    if loop_key in loops_found:
+                        continue
+                    loops_found.add(loop_key)
+
+                    loops_f.write(f"Loop: {source} {include}\n")
+
+                    # If the counts are close, indicate that the two modules are
+                    # on the same level, though they shouldn't be.
+                    diff = include_freq - source_freq
+                    if diff > 3:
+                        loops_f.write(f"  {source} > {include}\n\n")
+                    elif diff < -3:
+                        loops_f.write(f"  {include} > {source}\n\n")
+                    elif source_freq == include_freq:
+                        loops_f.write(f"  {include} == {source}\n\n")
+                    else:
+                        loops_f.write(f"  {include} ~= {source}\n\n")
+                else:
+                    ordering_f.write(f"{source} > {include}\n")
+
+    # Print results
+    print("\nOrdering:")
+    with open(ordering_file, "r") as f:
+        print(f.read(), end="")
+
+    print("\nLoops:")
+    with open(loops_file, "r") as f:
+        print(f.read(), end="")
+
+
+if __name__ == "__main__":
+    main()
--- a/.github/scripts/levelization/results/loops.txt
+++ b/.github/scripts/levelization/results/loops.txt
@@ -0,0 +1,18 @@
+Loop: xrpld.app xrpld.overlay
+  xrpld.app > xrpld.overlay
+
+Loop: xrpld.app xrpld.rpc
+  xrpld.rpc > xrpld.app
+
+Loop: xrpld.app xrpld.shamap
+  xrpld.shamap > xrpld.app
+
+Loop: xrpld.app xrpld.telemetry
+  xrpld.app > xrpld.telemetry
+
+Loop: xrpld.overlay xrpld.rpc
+  xrpld.rpc ~= xrpld.overlay
+
+Loop: xrpld.overlay xrpld.telemetry
+  xrpld.overlay > xrpld.telemetry
+
--- a/.github/scripts/levelization/results/ordering.txt
+++ b/.github/scripts/levelization/results/ordering.txt
@@ -0,0 +1,343 @@
+benchmarks.libxrpl > xrpl.basics
+benchmarks.libxrpl > xrpl.config
+benchmarks.libxrpl > xrpl.nodestore
+libxrpl.basics > xrpl.basics
+libxrpl.conditions > xrpl.basics
+libxrpl.conditions > xrpl.conditions
+libxrpl.config > xrpl.basics
+libxrpl.config > xrpl.config
+libxrpl.consensus > xrpl.basics
+libxrpl.consensus > xrpl.consensus
+libxrpl.core > xrpl.basics
+libxrpl.core > xrpl.core
+libxrpl.core > xrpl.json
+libxrpl.crypto > xrpl.basics
+libxrpl.json > xrpl.basics
+libxrpl.json > xrpl.json
+libxrpl.ledger > xrpl.basics
+libxrpl.ledger > xrpl.json
+libxrpl.ledger > xrpl.ledger
+libxrpl.ledger > xrpl.nodestore
+libxrpl.ledger > xrpl.protocol
+libxrpl.ledger > xrpl.shamap
+libxrpl.net > xrpl.basics
+libxrpl.net > xrpl.net
+libxrpl.nodestore > xrpl.basics
+libxrpl.nodestore > xrpl.config
+libxrpl.nodestore > xrpl.json
+libxrpl.nodestore > xrpl.nodestore
+libxrpl.nodestore > xrpl.protocol
+libxrpl.peerfinder > xrpl.basics
+libxrpl.peerfinder > xrpl.peerfinder
+libxrpl.peerfinder > xrpl.protocol
+libxrpl.protocol > xrpl.basics
+libxrpl.protocol > xrpl.json
+libxrpl.protocol > xrpl.protocol
+libxrpl.rdb > xrpl.basics
+libxrpl.rdb > xrpl.config
+libxrpl.rdb > xrpl.core
+libxrpl.rdb > xrpl.rdb
+libxrpl.resource > xrpl.basics
+libxrpl.resource > xrpl.json
+libxrpl.resource > xrpl.protocol
+libxrpl.resource > xrpl.resource
+libxrpl.server > xrpl.basics
+libxrpl.server > xrpl.config
+libxrpl.server > xrpl.core
+libxrpl.server > xrpl.json
+libxrpl.server > xrpl.protocol
+libxrpl.server > xrpl.rdb
+libxrpl.server > xrpl.resource
+libxrpl.server > xrpl.server
+libxrpl.shamap > xrpl.basics
+libxrpl.shamap > xrpl.nodestore
+libxrpl.shamap > xrpl.protocol
+libxrpl.shamap > xrpl.shamap
+libxrpl.telemetry > xrpl.basics
+libxrpl.telemetry > xrpl.config
+libxrpl.telemetry > xrpl.protocol
+libxrpl.telemetry > xrpl.telemetry
+libxrpl.tx > xrpl.basics
+libxrpl.tx > xrpl.conditions
+libxrpl.tx > xrpl.core
+libxrpl.tx > xrpl.json
+libxrpl.tx > xrpl.ledger
+libxrpl.tx > xrpl.protocol
+libxrpl.tx > xrpl.server
+libxrpl.tx > xrpl.telemetry
+libxrpl.tx > xrpl.tx
+test.app > test.jtx
+test.app > test.unit_test
+test.app > xrpl.basics
+test.app > xrpl.config
+test.app > xrpl.consensus
+test.app > xrpl.core
+test.app > xrpld.app
+test.app > xrpld.core
+test.app > xrpld.overlay
+test.app > xrpld.rpc
+test.app > xrpl.json
+test.app > xrpl.ledger
+test.app > xrpl.nodestore
+test.app > xrpl.protocol
+test.app > xrpl.resource
+test.app > xrpl.server
+test.app > xrpl.shamap
+test.app > xrpl.tx
+test.basics > test.jtx
+test.basics > xrpl.basics
+test.basics > xrpl.core
+test.basics > xrpld.rpc
+test.basics > xrpl.json
+test.basics > xrpl.protocol
+test.beast > xrpl.basics
+test.conditions > xrpl.basics
+test.conditions > xrpl.conditions
+test.consensus > test.jtx
+test.consensus > xrpl.basics
+test.consensus > xrpld.app
+test.consensus > xrpl.ledger
+test.consensus > xrpl.protocol
+test.consensus > xrpl.shamap
+test.consensus > xrpl.tx
+test.core > test.jtx
+test.core > test.unit_test
+test.core > xrpl.basics
+test.core > xrpl.config
+test.core > xrpl.core
+test.core > xrpld.core
+test.core > xrpl.json
+test.core > xrpl.protocol
+test.core > xrpl.rdb
+test.core > xrpl.server
+test.json > test.jtx
+test.json > xrpl.json
+test.jtx > test.unit_test
+test.jtx > xrpl.basics
+test.jtx > xrpl.config
+test.jtx > xrpl.core
+test.jtx > xrpld.app
+test.jtx > xrpld.core
+test.jtx > xrpld.rpc
+test.jtx > xrpl.json
+test.jtx > xrpl.ledger
+test.jtx > xrpl.net
+test.jtx > xrpl.protocol
+test.jtx > xrpl.resource
+test.jtx > xrpl.server
+test.jtx > xrpl.tx
+test.ledger > test.jtx
+test.ledger > xrpl.basics
+test.ledger > xrpl.core
+test.ledger > xrpld.app
+test.ledger > xrpld.core
+test.ledger > xrpl.json
+test.ledger > xrpl.ledger
+test.ledger > xrpl.protocol
+test.nodestore > test.jtx
+test.nodestore > test.unit_test
+test.nodestore > xrpl.basics
+test.nodestore > xrpl.config
+test.nodestore > xrpld.app
+test.nodestore > xrpld.core
+test.nodestore > xrpld.telemetry
+test.nodestore > xrpl.nodestore
+test.nodestore > xrpl.rdb
+test.overlay > test.jtx
+test.overlay > test.unit_test
+test.overlay > xrpl.basics
+test.overlay > xrpl.config
+test.overlay > xrpld.app
+test.overlay > xrpld.core
+test.overlay > xrpld.overlay
+test.overlay > xrpl.json
+test.overlay > xrpl.nodestore
+test.overlay > xrpl.peerfinder
+test.overlay > xrpl.protocol
+test.overlay > xrpl.resource
+test.overlay > xrpl.server
+test.overlay > xrpl.shamap
+test.protocol > test.jtx
+test.protocol > test.unit_test
+test.protocol > xrpl.basics
+test.protocol > xrpld.core
+test.protocol > xrpl.json
+test.protocol > xrpl.protocol
+test.rpc > test.jtx
+test.rpc > xrpl.basics
+test.rpc > xrpl.config
+test.rpc > xrpl.core
+test.rpc > xrpld.app
+test.rpc > xrpld.core
+test.rpc > xrpld.overlay
+test.rpc > xrpld.rpc
+test.rpc > xrpl.json
+test.rpc > xrpl.ledger
+test.rpc > xrpl.protocol
+test.rpc > xrpl.resource
+test.rpc > xrpl.server
+test.rpc > xrpl.tx
+test.server > test.jtx
+test.server > test.unit_test
+test.server > xrpl.basics
+test.server > xrpl.config
+test.server > xrpld.app
+test.server > xrpld.core
+test.server > xrpl.json
+test.server > xrpl.protocol
+test.server > xrpl.server
+test.unit_test > xrpl.basics
+test.unit_test > xrpl.protocol
+tests.libxrpl > xrpl.basics
+tests.libxrpl > xrpl.config
+tests.libxrpl > xrpl.consensus
+tests.libxrpl > xrpl.core
+tests.libxrpl > xrpld.app
+tests.libxrpl > xrpld.overlay
+tests.libxrpl > xrpld.telemetry
+tests.libxrpl > xrpl.json
+tests.libxrpl > xrpl.ledger
+tests.libxrpl > xrpl.net
+tests.libxrpl > xrpl.nodestore
+tests.libxrpl > xrpl.peerfinder
+tests.libxrpl > xrpl.protocol
+tests.libxrpl > xrpl.protocol_autogen
+tests.libxrpl > xrpl.resource
+tests.libxrpl > xrpl.server
+tests.libxrpl > xrpl.shamap
+tests.libxrpl > xrpl.telemetry
+tests.libxrpl > xrpl.tx
+xrpl.conditions > xrpl.basics
+xrpl.conditions > xrpl.protocol
+xrpl.config > xrpl.basics
+xrpl.consensus > xrpl.basics
+xrpl.consensus > xrpl.json
+xrpl.consensus > xrpl.ledger
+xrpl.consensus > xrpl.protocol
+xrpl.consensus > xrpl.telemetry
+xrpl.core > xrpl.basics
+xrpl.core > xrpl.json
+xrpl.core > xrpl.protocol
+xrpl.json > xrpl.basics
+xrpl.ledger > xrpl.basics
+xrpl.ledger > xrpl.json
+xrpl.ledger > xrpl.nodestore
+xrpl.ledger > xrpl.protocol
+xrpl.ledger > xrpl.shamap
+xrpl.net > xrpl.basics
+xrpl.nodestore > xrpl.basics
+xrpl.nodestore > xrpl.config
+xrpl.nodestore > xrpl.json
+xrpl.nodestore > xrpl.protocol
+xrpl.peerfinder > xrpl.basics
+xrpl.peerfinder > xrpl.protocol
+xrpl.protocol > xrpl.basics
+xrpl.protocol > xrpl.json
+xrpl.protocol_autogen > xrpl.json
+xrpl.protocol_autogen > xrpl.protocol
+xrpl.rdb > xrpl.basics
+xrpl.rdb > xrpl.core
+xrpl.rdb > xrpl.protocol
+xrpl.resource > xrpl.basics
+xrpl.resource > xrpl.json
+xrpl.resource > xrpl.protocol
+xrpl.server > xrpl.basics
+xrpl.server > xrpl.core
+xrpl.server > xrpl.json
+xrpl.server > xrpl.protocol
+xrpl.server > xrpl.rdb
+xrpl.server > xrpl.resource
+xrpl.shamap > xrpl.basics
+xrpl.shamap > xrpl.nodestore
+xrpl.shamap > xrpl.protocol
+xrpl.telemetry > xrpl.basics
+xrpl.telemetry > xrpl.config
+xrpl.tx > xrpl.basics
+xrpl.tx > xrpl.core
+xrpl.tx > xrpl.ledger
+xrpl.tx > xrpl.protocol
+xrpl.tx > xrpl.telemetry
+xrpld.app > test.unit_test
+xrpld.app > xrpl.basics
+xrpld.app > xrpl.config
+xrpld.app > xrpl.consensus
+xrpld.app > xrpl.core
+xrpld.app > xrpld.core
+xrpld.app > xrpl.json
+xrpld.app > xrpl.ledger
+xrpld.app > xrpl.net
+xrpld.app > xrpl.nodestore
+xrpld.app > xrpl.peerfinder
+xrpld.app > xrpl.protocol
+xrpld.app > xrpl.rdb
+xrpld.app > xrpl.resource
+xrpld.app > xrpl.server
+xrpld.app > xrpl.shamap
+xrpld.app > xrpl.telemetry
+xrpld.app > xrpl.tx
+xrpld.core > xrpl.basics
+xrpld.core > xrpl.config
+xrpld.core > xrpl.core
+xrpld.core > xrpl.net
+xrpld.core > xrpl.protocol
+xrpld.core > xrpl.rdb
+xrpld.overlay > xrpl.basics
+xrpld.overlay > xrpl.config
+xrpld.overlay > xrpl.consensus
+xrpld.overlay > xrpl.core
+xrpld.overlay > xrpld.core
+xrpld.overlay > xrpld.peerfinder
+xrpld.overlay > xrpl.json
+xrpld.overlay > xrpl.ledger
+xrpld.overlay > xrpl.peerfinder
+xrpld.overlay > xrpl.protocol
+xrpld.overlay > xrpl.resource
+xrpld.overlay > xrpl.server
+xrpld.overlay > xrpl.shamap
+xrpld.overlay > xrpl.telemetry
+xrpld.overlay > xrpl.tx
+xrpld.peerfinder > xrpl.basics
+xrpld.peerfinder > xrpld.app
+xrpld.peerfinder > xrpld.core
+xrpld.peerfinder > xrpl.peerfinder
+xrpld.peerfinder > xrpl.rdb
+xrpld.perflog > xrpl.basics
+xrpld.perflog > xrpl.config
+xrpld.perflog > xrpl.core
+xrpld.perflog > xrpld.app
+xrpld.perflog > xrpld.rpc
+xrpld.perflog > xrpld.telemetry
+xrpld.perflog > xrpl.json
+xrpld.perflog > xrpl.nodestore
+xrpld.perflog > xrpl.protocol
+xrpld.rpc > xrpl.basics
+xrpld.rpc > xrpl.config
+xrpld.rpc > xrpl.core
+xrpld.rpc > xrpld.core
+xrpld.rpc > xrpl.json
+xrpld.rpc > xrpl.ledger
+xrpld.rpc > xrpl.net
+xrpld.rpc > xrpl.nodestore
+xrpld.rpc > xrpl.protocol
+xrpld.rpc > xrpl.rdb
+xrpld.rpc > xrpl.resource
+xrpld.rpc > xrpl.server
+xrpld.rpc > xrpl.shamap
+xrpld.rpc > xrpl.telemetry
+xrpld.rpc > xrpl.tx
+xrpld.shamap > xrpl.basics
+xrpld.shamap > xrpld.core
+xrpld.shamap > xrpl.nodestore
+xrpld.shamap > xrpl.protocol
+xrpld.shamap > xrpl.shamap
+xrpld.telemetry > xrpl.basics
+xrpld.telemetry > xrpl.consensus
+xrpld.telemetry > xrpl.core
+xrpld.telemetry > xrpld.core
+xrpld.telemetry > xrpl.json
+xrpld.telemetry > xrpl.ledger
+xrpld.telemetry > xrpl.nodestore
+xrpld.telemetry > xrpl.protocol
+xrpld.telemetry > xrpl.rdb
+xrpld.telemetry > xrpl.server
+xrpld.telemetry > xrpl.telemetry
--- a/.github/scripts/otel-naming/README.md
+++ b/.github/scripts/otel-naming/README.md
@@ -0,0 +1,82 @@
+# OTel naming-consistency check
+
+`check_otel_naming.py` enforces the OpenTelemetry span-attribute naming
+convention documented in
+[CONTRIBUTING.md](../../../CONTRIBUTING.md#telemetry-span-attribute-naming)
+across every layer of the telemetry pipeline. The `*SpanNames.h` constants are
+the single source of truth (L1); every other layer must agree with them.
+
+## Running locally
+
+```
+python .github/scripts/otel-naming/check_otel_naming.py
+```
+
+It takes no arguments, can be run from any directory inside the repo, and uses
+only the Python standard library (no `pip install`, matching the levelization
+check). A non-zero exit code means a violation was found; the output lists each
+violation as `RULE | location | token | expected`.
+
+## What it checks
+
+The valid key set is **derived dynamically from the OTel code** — there is no
+hardcoded allowlist:
+
+- **L1 keys** come from the `namespace attr { ... }` blocks of every
+  `*SpanNames.h`, resolving the `makeStr("x")` / `join(seg::a, seg::b)` DSL
+  (cross-file, so `join(seg::rpc, ...)` resolves `seg::rpc` from the base
+  `SpanNames.h`). Each constant is resolved against **its own** header, so two
+  headers that define a same-named constant (e.g. a base `attr::ledgerHash` and
+  a domain `attr::ledgerHash`) each contribute their real wire key — a later
+  header cannot clobber an earlier one's value in a flat table.
+- **Legitimate dotted keys** = ONLY the keys the code actually sets as resource
+  attributes, i.e. the entries inside `Telemetry.cpp`'s `Resource::Create({...})`
+  call: the `semconv::service::*` keys (`service.*`) plus any `attr::<name>`
+  constants passed there (`xrpl.network.*`). A dotted key that is _declared_ in a
+  header but never set as a resource attr is a span attribute in resource
+  clothing — a Rule-A violation, even if it lives in the base `SpanNames.h`.
+- **L1-metrics** — instrument names, label keys and bounded label values come
+  from the `namespace metric` / `namespace label` / `namespace lval` blocks of
+  every `*MetricNames.h`, read as `inline constexpr char NAME[] = "wire";`.
+  These headers deliberately do **not** use the `makeStr`/`StaticStr` DSL the
+  span headers use: the OTel C++ API takes `nostd::string_view`, which
+  constructs from `char const*` but has no constructor from
+  `std::string_view`, so a `StaticStr` will not compile in an instrument-name
+  or label-key position.
+
+### Rules (each fails the build, when its inputs are present)
+
+| Rule | Check                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
+| ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| A    | No stray dotted span-attribute key (only the derived resource keys may be dotted).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
+| G    | Attribute keys are `lower_snake_case` (`^[a-z][a-z0-9_]*$` per dot-segment) — no camelCase, UPPERCASE, or spaces.                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
+| F    | No string literals as attribute keys or span-name arguments in `setAttribute`/`addEvent`/`span`/`rootSpan`/`childSpan` (`rootSpan` shares `span`'s `(cat, prefix, name)` signature). Attribute _values_ are exempt (runtime data); `*SpanNames.h` definitions and test files are exempt.                                                                                                                                                                                                                                                                                                   |
+| B    | Every collector `spanmetrics.dimensions` name exists in the L1 key set.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
+| C    | Every Tempo span-filter tag exists in the L1 key set.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
+| D    | Every dashboard label resolves to an L1 span attribute, a native-metric label (L6, emitted by MetricsRegistry), or a Prometheus/Grafana builtin. TraceQL scope prefixes (`span.`/`resource.`/…) are stripped before the L1 lookup.                                                                                                                                                                                                                                                                                                                                                         |
+| E    | No dotted `xrpl.<domain>.<field>` attribute key in the runbook (only the L1 resource attrs `xrpl.network.*` may be dotted). Span names, filenames, OTel-standard keys, and metric labels are not flagged.                                                                                                                                                                                                                                                                                                                                                                                  |
+| I    | No string literals as **metric** instrument names or label keys — the mirror of Rule F. Applies to the name passed to an `XRPL_METRIC_*` macro or a `meter->Create*` factory and to the label _keys_ in its label set. Label _values_, descriptions, `*MetricNames.h`, `MetricMacros.h` and test files are exempt. Scoped by metric **family** (first underscore segment): declaring a constant opts that family in, so the metric surface can be converted subsystem by subsystem. Unconverted families warn as Rule L.                                                                   |
+| J    | Metric instrument names follow the suffix conventions: `lower_snake_case`, no `xrpld_`/`xrpl_` prefix (the exporter adds it), a counter ends `_total`, a histogram ends `_us`/`_ms`/`_seconds`, a gauge does not end `_total`. The instrument **kind** is read from the emit site, never guessed from words in the name — so a multi-series gauge carrying units in its label values (e.g. `nodestore_state` observing `write_mean_us`) is not a violation. A name created through two different factories is itself reported as a kind conflict, since no suffix can be correct for both. |
+| K    | Every metric named in `docker/telemetry/workload/expected_metrics.json` resolves to a declared constant, so a rename in code cannot leave the workload validator asserting a name nothing emits. PromQL selectors (`m{label="v"}`) and exporter-appended histogram suffixes (`_bucket`/`_count`/`_sum`) are normalized away first; groups fed by another emit path (`statsd_gauges`, `statsd_counters`, `spanmetrics`) are out of scope by design.                                                                                                                                         |
+
+Rule F runs **unconditionally** (it is a purely syntactic check on the
+call-sites and needs no `*SpanNames.h`), so a code path that calls
+`SpanGuard::span`/`setAttribute` directly without ever defining a header is
+still caught.
+
+### Warnings (printed, never fail the build)
+
+| Rule | Check                                                                                                                                                                                                                                                                                                                                                                                      |
+| ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| H    | A namespace-qualified constant (e.g. `foo::bar::myKey`) used at a telemetry call-site is not defined in any `*SpanNames.h`. The constant should live in the proper header; defining it in-place bypasses rules A/G/F. Warns rather than fails — the argument may be a legitimately dynamic value, and the header may live on a later branch. Bare locals and `std::` names are not warned. |
+| L    | A literal metric name in a family that has no `*MetricNames.h` constants yet. Rule I's ratchet defers these instead of failing the build on the whole pre-existing metric surface at once; the warning keeps the outstanding conversion work visible rather than silently accepted.                                                                                                        |
+
+## Presence-gated
+
+Every rule runs **only when the source files it needs are present** in the tree
+and is otherwise skipped (printed as `SKIP: <rule> — <reason>`), never failed.
+This keeps the check correct no matter how telemetry work is split across PRs —
+a stacked chain, one large PR, or independent per-stage PRs where (for example)
+the collector config lands before the dashboards. The collector/Tempo/dashboard/
+runbook layers are introduced in later phases; on a branch without them, only
+the L1-intrinsic rules (A, G, F) run.
--- a/.github/scripts/otel-naming/check_otel_naming.py
+++ b/.github/scripts/otel-naming/check_otel_naming.py
--- a/.github/scripts/otel-naming/test_check_otel_naming.py
+++ b/.github/scripts/otel-naming/test_check_otel_naming.py
--- a/.github/scripts/rename/README.md
+++ b/.github/scripts/rename/README.md
@@ -0,0 +1,50 @@
+## Renaming ripple(d) to xrpl(d)
+
+In the initial phases of development of the XRPL, the open source codebase was
+called "rippled" and it remains with that name even today. Today, over 1000
+nodes run the application, and code contributions have been submitted by
+developers located around the world. The XRPL community is larger than ever.
+In light of the decentralized and diversified nature of XRPL, we will rename any
+references to `ripple` and `rippled` to `xrpl` and `xrpld`, when appropriate.
+
+See [here](https://xls.xrpl.org/xls/XLS-0095-rename-rippled-to-xrpld.html) for
+more information.
+
+### Scripts
+
+To facilitate this transition, there will be multiple scripts that developers
+can run on their own PRs and forks to minimize conflicts. Each script should be
+run from the repository root.
+
+1. `.github/scripts/rename/definitions.sh`: This script will rename all
+   definitions, such as include guards, from `RIPPLE_XXX` and `RIPPLED_XXX` to
+   `XRPL_XXX`.
+2. `.github/scripts/rename/copyright.sh`: This script will remove superfluous
+   copyright notices.
+3. `.github/scripts/rename/cmake.sh`: This script will rename all CMake files
+   from `RippleXXX.cmake` or `RippledXXX.cmake` to `XrplXXX.cmake`, and any
+   references to `ripple` and `rippled` (with or without capital letters) to
+   `xrpl` and `xrpld`, respectively. The name of the binary will remain as-is,
+   and will only be renamed to `xrpld` by a later script.
+4. `.github/scripts/rename/binary.sh`: This script will rename the binary from
+   `rippled` to `xrpld`, and reverses the symlink so that `rippled` points to
+   the `xrpld` binary.
+5. `.github/scripts/rename/namespace.sh`: This script will rename the C++
+   namespaces from `ripple` to `xrpl`.
+6. `.github/scripts/rename/config.sh`: This script will rename the config from
+   `rippled.cfg` to `xrpld.cfg`, and updating the code accordingly. The old
+   filename will still be accepted.
+7. `.github/scripts/rename/docs.sh`: This script will rename any lingering
+   references of `ripple(d)` to `xrpl(d)` in code, comments, and documentation.
+
+You can run all these scripts from the repository root as follows:
+
+```shell
+./.github/scripts/rename/definitions.sh .
+./.github/scripts/rename/copyright.sh .
+./.github/scripts/rename/cmake.sh .
+./.github/scripts/rename/binary.sh .
+./.github/scripts/rename/namespace.sh .
+./.github/scripts/rename/config.sh .
+./.github/scripts/rename/docs.sh .
+```
--- a/.github/scripts/rename/binary.sh
+++ b/.github/scripts/rename/binary.sh
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# Exit the script as soon as an error occurs.
+set -e
+
+# On MacOS, ensure that GNU sed is installed and available as `gsed`.
+SED_COMMAND=sed
+if [[ "${OSTYPE}" == 'darwin'* ]]; then
+    if ! command -v gsed &>/dev/null; then
+        echo "Error: gsed is not installed. Please install it using 'brew install gnu-sed'."
+        exit 1
+    fi
+    SED_COMMAND=gsed
+fi
+
+# This script changes the binary name from `rippled` to `xrpld`, and reverses
+# the symlink that currently points from `xrpld` to `rippled` so that it points
+# from `rippled` to `xrpld` instead.
+# Usage: .github/scripts/rename/binary.sh <repository directory>
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <repository directory>"
+    exit 1
+fi
+
+DIRECTORY=$1
+echo "Processing directory: ${DIRECTORY}"
+if [ ! -d "${DIRECTORY}" ]; then
+    echo "Error: Directory '${DIRECTORY}' does not exist."
+    exit 1
+fi
+pushd "${DIRECTORY}"
+
+# Remove the binary name override added by the cmake.sh script.
+${SED_COMMAND} -z -i -E 's@\s+# For the time being.+"rippled"\)@@' cmake/XrplCore.cmake
+
+# Reverse the symlink.
+${SED_COMMAND} -i -E 's@create_symbolic_link\(rippled@create_symbolic_link(xrpld@' cmake/XrplInstall.cmake
+${SED_COMMAND} -i -E 's@/xrpld\$\{suffix\}@/rippled${suffix}@' cmake/XrplInstall.cmake
+
+# Rename references to the binary.
+${SED_COMMAND} -i -E 's@rippled@xrpld@g' BUILD.md
+${SED_COMMAND} -i -E 's@rippled@xrpld@g' CONTRIBUTING.md
+${SED_COMMAND} -i -E 's@rippled@xrpld@g' .github/ISSUE_TEMPLATE/bug_report.md
+
+# Restore and/or fix certain renames. The pre-commit hook will update the
+# formatting upon saving/committing.
+${SED_COMMAND} -i -E 's@ripple/xrpld@XRPLF/rippled@g' BUILD.md
+${SED_COMMAND} -i -E 's@XRPLF/xrpld@XRPLF/rippled@g' BUILD.md
+${SED_COMMAND} -i -E 's@xrpld \(`xrpld`\)@xrpld@g' BUILD.md
+${SED_COMMAND} -i -E 's@XRPLF/xrpld@XRPLF/rippled@g' CONTRIBUTING.md
+${SED_COMMAND} -i -E 's@XRPLF/xrpld@XRPLF/rippled@g' docs/install.md
+
+popd
+echo "Processing complete."
--- a/.github/scripts/rename/cmake.sh
+++ b/.github/scripts/rename/cmake.sh
@@ -0,0 +1,88 @@
+#!/bin/bash
+
+# Exit the script as soon as an error occurs.
+set -e
+
+# On MacOS, ensure that GNU sed and head are installed and available as `gsed`
+# and `ghead`, respectively.
+SED_COMMAND=sed
+HEAD_COMMAND=head
+if [[ "${OSTYPE}" == 'darwin'* ]]; then
+    if ! command -v gsed &>/dev/null; then
+        echo "Error: gsed is not installed. Please install it using 'brew install gnu-sed'."
+        exit 1
+    fi
+    SED_COMMAND=gsed
+    if ! command -v ghead &>/dev/null; then
+        echo "Error: ghead is not installed. Please install it using 'brew install coreutils'."
+        exit 1
+    fi
+    HEAD_COMMAND=ghead
+fi
+
+# This script renames CMake files from `RippleXXX.cmake` or `RippledXXX.cmake`
+# to `XrplXXX.cmake`, and any references to `ripple` and `rippled` (with or
+# without capital letters) to `xrpl` and `xrpld`, respectively. The name of the
+# binary will remain as-is, and will only be renamed to `xrpld` in a different
+# script, but the proto file will be renamed.
+# Usage: .github/scripts/rename/cmake.sh <repository directory>
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <repository directory>"
+    exit 1
+fi
+
+DIRECTORY=$1
+echo "Processing directory: ${DIRECTORY}"
+if [ ! -d "${DIRECTORY}" ]; then
+    echo "Error: Directory '${DIRECTORY}' does not exist."
+    exit 1
+fi
+pushd "${DIRECTORY}"
+
+# Rename the files.
+find cmake -type f -name 'Rippled*.cmake' -exec bash -c 'mv "${1}" "${1/Rippled/Xrpl}"' - {} \;
+find cmake -type f -name 'Ripple*.cmake' -exec bash -c 'mv "${1}" "${1/Ripple/Xrpl}"' - {} \;
+if [ -e include/xrpl/proto/ripple.proto ]; then
+    mv include/xrpl/proto/ripple.proto include/xrpl/proto/xrpl.proto
+fi
+
+# Rename inside the files.
+find cmake -type f -name '*.cmake' | while read -r FILE; do
+    echo "Processing file: ${FILE}"
+    ${SED_COMMAND} -i 's/Rippled/Xrpld/g' "${FILE}"
+    ${SED_COMMAND} -i 's/Ripple/Xrpl/g' "${FILE}"
+    ${SED_COMMAND} -i 's/rippled/xrpld/g' "${FILE}"
+    ${SED_COMMAND} -i 's/ripple/xrpl/g' "${FILE}"
+done
+${SED_COMMAND} -i -E 's/Rippled?/Xrpl/g' CMakeLists.txt
+${SED_COMMAND} -i 's/ripple/xrpl/g' CMakeLists.txt
+${SED_COMMAND} -i 's/ripple.pb.h/xrpl.pb.h/' include/xrpl/protocol/messages.h
+${SED_COMMAND} -i 's/ripple.pb.h/xrpl.pb.h/' BUILD.md
+${SED_COMMAND} -i 's/ripple.pb.h/xrpl.pb.h/' BUILD.md
+
+# Restore the name of the validator keys repository.
+${SED_COMMAND} -i 's@xrpl/validator-keys-tool@ripple/validator-keys-tool@' cmake/XrplValidatorKeys.cmake
+
+# Ensure the name of the binary and config remain 'rippled' for now.
+${SED_COMMAND} -i -E 's/xrpld(-example)?\.cfg/rippled\1.cfg/g' cmake/XrplInstall.cmake
+if grep -q '"xrpld"' cmake/XrplCore.cmake; then
+    # The script has been rerun, so just restore the name of the binary.
+    ${SED_COMMAND} -i 's/"xrpld"/"rippled"/' cmake/XrplCore.cmake
+elif ! grep -q '"rippled"' cmake/XrplCore.cmake; then
+    ${HEAD_COMMAND} -n -1 cmake/XrplCore.cmake >cmake.tmp
+    echo '  # For the time being, we will keep the name of the binary as it was.' >>cmake.tmp
+    echo '  set_target_properties(xrpld PROPERTIES OUTPUT_NAME "rippled")' >>cmake.tmp
+    tail -1 cmake/XrplCore.cmake >>cmake.tmp
+    mv cmake.tmp cmake/XrplCore.cmake
+fi
+
+# Restore the symlink from 'xrpld' to 'rippled'.
+${SED_COMMAND} -i -E 's@create_symbolic_link\(xrpld@create_symbolic_link(rippled@' cmake/XrplInstall.cmake
+
+# Remove the symlink that previously pointed from 'ripple' to 'xrpl' but now is
+# no longer needed.
+${SED_COMMAND} -z -i -E 's@install\(CODE.+CMAKE_INSTALL_INCLUDEDIR}/xrpl\)\n"\)\n+@@' cmake/XrplInstall.cmake
+
+popd
+echo "Renaming complete."
--- a/.github/scripts/rename/config.sh
+++ b/.github/scripts/rename/config.sh
@@ -0,0 +1,71 @@
+#!/bin/bash
+
+# Exit the script as soon as an error occurs.
+set -e
+
+# On MacOS, ensure that GNU sed is installed and available as `gsed`.
+SED_COMMAND=sed
+if [[ "${OSTYPE}" == 'darwin'* ]]; then
+    if ! command -v gsed &>/dev/null; then
+        echo "Error: gsed is not installed. Please install it using 'brew install gnu-sed'."
+        exit 1
+    fi
+    SED_COMMAND=gsed
+fi
+
+# This script renames the config from `rippled.cfg` to `xrpld.cfg`, and updates
+# the code accordingly. The old filename will still be accepted.
+# Usage: .github/scripts/rename/config.sh <repository directory>
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <repository directory>"
+    exit 1
+fi
+
+DIRECTORY=$1
+echo "Processing directory: ${DIRECTORY}"
+if [ ! -d "${DIRECTORY}" ]; then
+    echo "Error: Directory '${DIRECTORY}' does not exist."
+    exit 1
+fi
+pushd "${DIRECTORY}"
+
+# Add the xrpld.cfg to the .gitignore.
+if ! grep -q 'xrpld.cfg' .gitignore; then
+    ${SED_COMMAND} -i '/rippled.cfg/a\
+/xrpld.cfg' .gitignore
+fi
+
+# Rename the files.
+if [ -e rippled.cfg ]; then
+    mv rippled.cfg xrpld.cfg
+fi
+if [ -e cfg/rippled-example.cfg ]; then
+    mv cfg/rippled-example.cfg cfg/xrpld-example.cfg
+fi
+
+# Rename inside the files.
+DIRECTORIES=("cfg" "cmake" "include" "src")
+for DIRECTORY in "${DIRECTORIES[@]}"; do
+    echo "Processing directory: ${DIRECTORY}"
+
+    find "${DIRECTORY}" -type f \( -name "*.h" -o -name "*.hpp" -o -name "*.ipp" -o -name "*.cpp" -o -name "*.cmake" -o -name "*.txt" -o -name "*.cfg" -o -name "*.md" \) | while read -r FILE; do
+        echo "Processing file: ${FILE}"
+        ${SED_COMMAND} -i -E 's/rippled(-example)?[ .]cfg/xrpld\1.cfg/g' "${FILE}"
+        ${SED_COMMAND} -i 's/rippleConfig/xrpldConfig/g' "${FILE}"
+    done
+done
+${SED_COMMAND} -i 's/rippled/xrpld/g' cfg/xrpld-example.cfg
+${SED_COMMAND} -i 's/rippled/xrpld/g' src/test/core/Config_test.cpp
+${SED_COMMAND} -i 's/ripplevalidators/xrplvalidators/g' src/test/core/Config_test.cpp # cspell: disable-line
+${SED_COMMAND} -i 's@ripple/@xrpld/@g' src/test/core/Config_test.cpp
+${SED_COMMAND} -i 's/Rippled/File/g' src/test/core/Config_test.cpp
+
+# Restore the old config file name in the code that maintains support for now.
+${SED_COMMAND} -i 's/kConfigLegacyName = "xrpld.cfg"/kConfigLegacyName = "rippled.cfg"/g' src/xrpld/core/detail/Config.cpp
+
+# Restore an URL.
+${SED_COMMAND} -i 's/connect-your-xrpld-to-the-xrp-test-net.html/connect-your-rippled-to-the-xrp-test-net.html/g' cfg/xrpld-example.cfg
+
+popd
+echo "Renaming complete."
--- a/.github/scripts/rename/copyright.sh
+++ b/.github/scripts/rename/copyright.sh
@@ -0,0 +1,103 @@
+#!/bin/bash
+
+# Exit the script as soon as an error occurs.
+set -e
+
+# On MacOS, ensure that GNU sed is installed and available as `gsed`.
+SED_COMMAND=sed
+if [[ "${OSTYPE}" == 'darwin'* ]]; then
+    if ! command -v gsed &>/dev/null; then
+        echo "Error: gsed is not installed. Please install it using 'brew install gnu-sed'."
+        exit 1
+    fi
+    SED_COMMAND=gsed
+fi
+
+# This script removes superfluous copyright notices in source and header files
+# in this project. Specifically, it removes all notices referencing Ripple,
+# XRPLF, and certain individual contributors upon mutual agreement, so the one
+# in the LICENSE.md file applies throughout. Copyright notices referencing
+# external contributions, e.g. from Bitcoin, remain as-is.
+# Usage: .github/scripts/rename/copyright.sh <repository directory>
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <repository directory>"
+    exit 1
+fi
+
+DIRECTORY=$1
+echo "Processing directory: ${DIRECTORY}"
+if [ ! -d "${DIRECTORY}" ]; then
+    echo "Error: Directory '${DIRECTORY}' does not exist."
+    exit 1
+fi
+pushd "${DIRECTORY}"
+
+# Prevent sed and echo from removing newlines and tabs in string literals by
+# temporarily replacing them with placeholders. This only affects one file.
+PLACEHOLDER_NEWLINE="__NEWLINE__"
+PLACEHOLDER_TAB="__TAB__"
+${SED_COMMAND} -i -E "s@\\\n@${PLACEHOLDER_NEWLINE}@g" src/test/rpc/ValidatorInfo_test.cpp
+${SED_COMMAND} -i -E "s@\\\t@${PLACEHOLDER_TAB}@g" src/test/rpc/ValidatorInfo_test.cpp
+
+# Process the include/ and src/ directories.
+DIRECTORIES=("include" "src")
+for DIRECTORY in "${DIRECTORIES[@]}"; do
+    echo "Processing directory: ${DIRECTORY}"
+
+    find "${DIRECTORY}" -type f \( -name "*.h" -o -name "*.hpp" -o -name "*.ipp" -o -name "*.cpp" -o -name "*.macro" \) | while read -r FILE; do
+        echo "Processing file: ${FILE}"
+        # Handle the cases where the copyright notice is enclosed in /* ... */
+        # and usually surrounded by //---- and //======.
+        ${SED_COMMAND} -z -i -E 's@^//-------+\n+@@' "${FILE}"
+        ${SED_COMMAND} -z -i -E 's@^.*Copyright.+(Ripple|Bougalis|Falco|Hinnant|Null|Ritchford|XRPLF).+PERFORMANCE OF THIS SOFTWARE\.\n\*/\n+@@' "${FILE}" # cspell: ignore Bougalis Falco Hinnant Ritchford
+        ${SED_COMMAND} -z -i -E 's@^//=======+\n+@@' "${FILE}"
+
+        # Handle the cases where the copyright notice is commented out with //.
+        ${SED_COMMAND} -z -i -E 's@^//\n// Copyright.+Falco \(vinnie dot falco at gmail dot com\)\n//\n+@@' "${FILE}" # cspell: ignore Vinnie Falco
+    done
+done
+
+# Restore copyright notices that were removed from specific files, without
+# restoring the verbiage that is already present in LICENSE.md. Ensure that if
+# the script is run multiple times, duplicate notices are not added.
+if ! grep -q 'Raw Material Software' include/xrpl/beast/core/CurrentThreadName.h; then
+    echo -e "// Portions of this file are from JUCE (http://www.juce.com).\n// Copyright (c) 2013 - Raw Material Software Ltd.\n// Please visit http://www.juce.com\n\n$(cat include/xrpl/beast/core/CurrentThreadName.h)" >include/xrpl/beast/core/CurrentThreadName.h
+fi
+if ! grep -q 'Dev Null' src/test/app/NetworkID_test.cpp; then
+    echo -e "// Copyright (c) 2020 Dev Null Productions\n\n$(cat src/test/app/NetworkID_test.cpp)" >src/test/app/NetworkID_test.cpp
+fi
+if ! grep -q 'Dev Null' src/test/app/tx/apply_test.cpp; then
+    echo -e "// Copyright (c) 2020 Dev Null Productions\n\n$(cat src/test/app/tx/apply_test.cpp)" >src/test/app/tx/apply_test.cpp
+fi
+if ! grep -q 'Dev Null' src/test/rpc/ManifestRPC_test.cpp; then
+    echo -e "// Copyright (c) 2020 Dev Null Productions\n\n$(cat src/test/rpc/ManifestRPC_test.cpp)" >src/test/rpc/ManifestRPC_test.cpp
+fi
+if ! grep -q 'Dev Null' src/test/rpc/ValidatorInfo_test.cpp; then
+    echo -e "// Copyright (c) 2020 Dev Null Productions\n\n$(cat src/test/rpc/ValidatorInfo_test.cpp)" >src/test/rpc/ValidatorInfo_test.cpp
+fi
+if ! grep -q 'Dev Null' src/xrpld/rpc/handlers/server_info/Manifest.cpp; then
+    echo -e "// Copyright (c) 2019 Dev Null Productions\n\n$(cat src/xrpld/rpc/handlers/server_info/Manifest.cpp)" >src/xrpld/rpc/handlers/server_info/Manifest.cpp
+fi
+if ! grep -q 'Dev Null' src/xrpld/rpc/handlers/admin/status/ValidatorInfo.cpp; then
+    echo -e "// Copyright (c) 2019 Dev Null Productions\n\n$(cat src/xrpld/rpc/handlers/admin/status/ValidatorInfo.cpp)" >src/xrpld/rpc/handlers/admin/status/ValidatorInfo.cpp
+fi
+if ! grep -q 'Bougalis' include/xrpl/basics/SlabAllocator.h; then
+    echo -e "// Copyright (c) 2022, Nikolaos D. Bougalis <nikb@bougalis.net>\n\n$(cat include/xrpl/basics/SlabAllocator.h)" >include/xrpl/basics/SlabAllocator.h # cspell: ignore Nikolaos Bougalis nikb
+fi
+if ! grep -q 'Bougalis' include/xrpl/basics/spinlock.h; then
+    echo -e "// Copyright (c) 2022, Nikolaos D. Bougalis <nikb@bougalis.net>\n\n$(cat include/xrpl/basics/spinlock.h)" >include/xrpl/basics/spinlock.h # cspell: ignore Nikolaos Bougalis nikb
+fi
+if ! grep -q 'Bougalis' include/xrpl/basics/tagged_integer.h; then
+    echo -e "// Copyright (c) 2014, Nikolaos D. Bougalis <nikb@bougalis.net>\n\n$(cat include/xrpl/basics/tagged_integer.h)" >include/xrpl/basics/tagged_integer.h # cspell: ignore Nikolaos Bougalis nikb
+fi
+if ! grep -q 'Ritchford' include/xrpl/beast/utility/Zero.h; then
+    echo -e "// Copyright (c) 2014, Tom Ritchford <tom@swirly.com>\n\n$(cat include/xrpl/beast/utility/Zero.h)" >include/xrpl/beast/utility/Zero.h # cspell: ignore Ritchford
+fi
+
+# Restore newlines and tabs in string literals in the affected file.
+${SED_COMMAND} -i -E "s@${PLACEHOLDER_NEWLINE}@\\\n@g" src/test/rpc/ValidatorInfo_test.cpp
+${SED_COMMAND} -i -E "s@${PLACEHOLDER_TAB}@\\\t@g" src/test/rpc/ValidatorInfo_test.cpp
+
+popd
+echo "Removal complete."
--- a/.github/scripts/rename/definitions.sh
+++ b/.github/scripts/rename/definitions.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Exit the script as soon as an error occurs.
+set -e
+
+# On MacOS, ensure that GNU sed is installed and available as `gsed`.
+SED_COMMAND=sed
+if [[ "${OSTYPE}" == 'darwin'* ]]; then
+    if ! command -v gsed &>/dev/null; then
+        echo "Error: gsed is not installed. Please install it using 'brew install gnu-sed'."
+        exit 1
+    fi
+    SED_COMMAND=gsed
+fi
+
+# This script renames definitions, such as include guards, in this project.
+# Specifically, it renames "RIPPLED_XXX" and "RIPPLE_XXX" to "XRPL_XXX" by
+# scanning all cmake, header, and source files in the specified directory and
+# its subdirectories.
+# Usage: .github/scripts/rename/definitions.sh <repository directory>
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <repository directory>"
+    exit 1
+fi
+
+DIRECTORY=$1
+echo "Processing directory: ${DIRECTORY}"
+if [ ! -d "${DIRECTORY}" ]; then
+    echo "Error: Directory '${DIRECTORY}' does not exist."
+    exit 1
+fi
+
+find "${DIRECTORY}" -type f \( -name "*.h" -o -name "*.hpp" -o -name "*.ipp" -o -name "*.cpp" \) | while read -r FILE; do
+    echo "Processing file: ${FILE}"
+    ${SED_COMMAND} -i -E 's@#(define|endif|if|ifdef|ifndef)(.*)(RIPPLED_|RIPPLE_)([A-Z0-9_]+)@#\1\2XRPL_\4@g' "${FILE}"
+done
+find "${DIRECTORY}" -type f \( -name "*.cmake" -o -name "*.txt" \) | while read -r FILE; do
+    echo "Processing file: ${FILE}"
+    ${SED_COMMAND} -i -E 's@(RIPPLED_|RIPPLE_)([A-Z0-9_]+)@XRPL_\2@g' "${FILE}"
+done
+echo "Renaming complete."
--- a/.github/scripts/rename/docs.sh
+++ b/.github/scripts/rename/docs.sh
@@ -0,0 +1,96 @@
+#!/bin/bash
+
+# Exit the script as soon as an error occurs.
+set -e
+
+# On MacOS, ensure that GNU sed is installed and available as `gsed`.
+SED_COMMAND=sed
+if [[ "${OSTYPE}" == 'darwin'* ]]; then
+    if ! command -v gsed &>/dev/null; then
+        echo "Error: gsed is not installed. Please install it using 'brew install gnu-sed'."
+        exit 1
+    fi
+    SED_COMMAND=gsed
+fi
+
+# This script renames all remaining references to `ripple` and `rippled` to
+# `xrpl` and `xrpld`, respectively, in code, comments, and documentation.
+# Usage: .github/scripts/rename/docs.sh <repository directory>
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <repository directory>"
+    exit 1
+fi
+
+DIRECTORY=$1
+echo "Processing directory: ${DIRECTORY}"
+if [ ! -d "${DIRECTORY}" ]; then
+    echo "Error: Directory '${DIRECTORY}' does not exist."
+    exit 1
+fi
+pushd "${DIRECTORY}"
+
+find . -type f \( -name "*.h" -o -name "*.hpp" -o -name "*.ipp" -o -name "*.cpp" -o -name "*.txt" -o -name "*.cfg" -o -name "*.md" -o -name "*.proto" \) -not -path "./.github/scripts/*" | while read -r FILE; do
+    echo "Processing file: ${FILE}"
+    ${SED_COMMAND} -i 's/rippleLockEscrowMPT/lockEscrowMPT/g' "${FILE}"
+    ${SED_COMMAND} -i 's/rippleUnlockEscrowMPT/unlockEscrowMPT/g' "${FILE}"
+    ${SED_COMMAND} -i 's/rippleCredit/directSendNoFee/g' "${FILE}"
+    ${SED_COMMAND} -i 's/rippleSend/directSendNoLimit/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's@([^/+-])rippled@\1xrpld@g' "${FILE}"
+    ${SED_COMMAND} -i -E 's@([^/+-])Rippled@\1Xrpld@g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/^rippled/xrpld/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/^Rippled/Xrpld/g' "${FILE}"
+    # cspell: disable
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (a|A)ddress/XRPL address/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (a|A)ccount/XRPL account/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (a|A)lgorithm/XRPL algorithm/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (c|C)lient/XRPL client/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (c|C)luster/XRPL cluster/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (c|C)onsensus/XRPL consensus/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (d|D)efault/XRPL default/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (e|E)poch/XRPL epoch/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (f|F)eature/XRPL feature/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (n|N)etwork/XRPL network/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (p|P)ayment/XRPL payment/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (p|P)rotocol/XRPL protocol/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (r|R)epository/XRPL repository/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple RPC/XRPL RPC/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (s|S)erialization/XRPL serialization/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (s|S)erver/XRPL server/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (s|S)pecific/XRPL specific/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple Source/XRPL Source/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (t|T)imestamp/XRPL timestamp/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple uses the consensus/XRPL uses the consensus/g' "${FILE}"
+    ${SED_COMMAND} -i -E 's/(r|R)ipple (v|V)alidator/XRPL validator/g' "${FILE}"
+    # cspell: enable
+    ${SED_COMMAND} -i 's/RippleLib/XrplLib/g' "${FILE}"
+    ${SED_COMMAND} -i 's/ripple-lib/XrplLib/g' "${FILE}"
+    ${SED_COMMAND} -i 's@opt/ripple/@opt/xrpld/@g' "${FILE}"
+    ${SED_COMMAND} -i 's@src/ripple/@src/xrpld/@g' "${FILE}"
+    ${SED_COMMAND} -i 's@ripple/app/@xrpld/app/@g' "${FILE}"
+    ${SED_COMMAND} -i 's@github.com/ripple/rippled@github.com/XRPLF/rippled@g' "${FILE}"
+    ${SED_COMMAND} -i 's/\ba xrpl/an xrpl/g' "${FILE}"
+    ${SED_COMMAND} -i 's/\ba XRPL/an XRPL/g' "${FILE}"
+done
+${SED_COMMAND} -i 's/ripple_libs/xrpl_libs/' BUILD.md
+${SED_COMMAND} -i 's/Ripple integrators/XRPL developers/' README.md
+${SED_COMMAND} -i 's/sanitizer-configuration-for-rippled/sanitizer-configuration-for-xrpld/' docs/build/sanitizers.md
+${SED_COMMAND} -i 's/rippled/xrpld/g' .github/scripts/levelization/README.md
+${SED_COMMAND} -i 's/rippled/xrpld/g' .github/scripts/strategy-matrix/generate.py
+${SED_COMMAND} -i 's@/rippled@/xrpld@g' docs/install.md
+${SED_COMMAND} -i 's@github.com/XRPLF/xrpld@github.com/XRPLF/rippled@g' docs/install.md
+${SED_COMMAND} -i 's/rippled/xrpld/g' docs/Doxyfile
+${SED_COMMAND} -i 's/ripple_basics/basics/' include/xrpl/basics/CountedObject.h
+${SED_COMMAND} -i 's/<ripple/<xrpl/' include/xrpl/protocol/AccountID.h
+${SED_COMMAND} -i 's/Ripple:/the XRPL:/g' include/xrpl/protocol/SecretKey.h
+${SED_COMMAND} -i 's/Ripple:/the XRPL:/g' include/xrpl/protocol/Seed.h
+${SED_COMMAND} -i 's/ripple/xrpl/g' src/test/README.md
+${SED_COMMAND} -i 's/www.ripple.com/www.xrpl.org/g' src/test/protocol/Seed_test.cpp
+
+# Restore specific changes.
+${SED_COMMAND} -i 's@b5efcc/src/xrpld@b5efcc/src/ripple@' include/xrpl/protocol/README.md
+${SED_COMMAND} -i 's/dbPrefix_ = "xrpldb"/dbPrefix_ = "rippledb"/' src/xrpld/app/misc/SHAMapStoreImp.h # cspell: disable-line
+${SED_COMMAND} -i 's/kConfigLegacyName = "xrpld.cfg"/kConfigLegacyName = "rippled.cfg"/' src/xrpld/core/detail/Config.cpp
+
+popd
+echo "Renaming complete."
--- a/.github/scripts/rename/include.sh
+++ b/.github/scripts/rename/include.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# Exit the script as soon as an error occurs.
+set -e
+
+# This script checks whether there are no new include guards introduced by a new
+# PR, as header files should use "#pragma once" instead. The script assumes any
+# include guards will use "XRPL_" as prefix.
+# Usage: .github/scripts/rename/include.sh <repository directory>
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <repository directory>"
+    exit 1
+fi
+
+DIRECTORY=$1
+echo "Processing directory: ${DIRECTORY}"
+if [ ! -d "${DIRECTORY}" ]; then
+    echo "Error: Directory '${DIRECTORY}' does not exist."
+    exit 1
+fi
+
+find "${DIRECTORY}" -type f \( -name "*.h" -o -name "*.hpp" -o -name "*.ipp" \) | while read -r FILE; do
+    echo "Processing file: ${FILE}"
+    if grep -q "#ifndef XRPL_" "${FILE}"; then
+        echo "Please replace all include guards by #pragma once."
+        exit 1
+    fi
+done
+echo "Checking complete."
--- a/.github/scripts/rename/namespace.sh
+++ b/.github/scripts/rename/namespace.sh
@@ -0,0 +1,56 @@
+#!/bin/bash
+
+# Exit the script as soon as an error occurs.
+set -e
+
+# On MacOS, ensure that GNU sed is installed and available as `gsed`.
+SED_COMMAND=sed
+if [[ "${OSTYPE}" == 'darwin'* ]]; then
+    if ! command -v gsed &>/dev/null; then
+        echo "Error: gsed is not installed. Please install it using 'brew install gnu-sed'."
+        exit 1
+    fi
+    SED_COMMAND=gsed
+fi
+
+# This script renames the `ripple` namespace to `xrpl` in this project.
+# Specifically, it renames all occurrences of `namespace ripple` and `ripple::`
+# to `namespace xrpl` and `xrpl::`, respectively, by scanning all header and
+# source files in the specified directory and its subdirectories, as well as any
+# occurrences in the documentation. It also renames them in the test suites.
+# Usage: .github/scripts/rename/namespace.sh <repository directory>
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <repository directory>"
+    exit 1
+fi
+
+DIRECTORY=$1
+echo "Processing directory: ${DIRECTORY}"
+if [ ! -d "${DIRECTORY}" ]; then
+    echo "Error: Directory '${DIRECTORY}' does not exist."
+    exit 1
+fi
+pushd "${DIRECTORY}"
+
+DIRECTORIES=("include" "src" "tests")
+for DIRECTORY in "${DIRECTORIES[@]}"; do
+    echo "Processing directory: ${DIRECTORY}"
+
+    find "${DIRECTORY}" -type f \( -name "*.h" -o -name "*.hpp" -o -name "*.ipp" -o -name "*.cpp" -o -name "*.macro" \) | while read -r FILE; do
+        echo "Processing file: ${FILE}"
+        ${SED_COMMAND} -i 's/namespace ripple/namespace xrpl/g' "${FILE}"
+        ${SED_COMMAND} -i 's/ripple::/xrpl::/g' "${FILE}"
+        ${SED_COMMAND} -i 's/"ripple:/"xrpl::/g' "${FILE}"
+        ${SED_COMMAND} -i -E 's/(BEAST_DEFINE_TESTSUITE.+)ripple(.+)/\1xrpl\2/g' "${FILE}"
+    done
+done
+
+DIRECTORY=$1
+find "${DIRECTORY}" -type f -name "*.md" | while read -r FILE; do
+    echo "Processing file: ${FILE}"
+    ${SED_COMMAND} -i 's/ripple::/xrpl::/g' "${FILE}"
+done
+
+popd
+echo "Renaming complete."
--- a/.github/scripts/strategy-matrix/generate.py
+++ b/.github/scripts/strategy-matrix/generate.py
@@ -0,0 +1,335 @@
+#!/usr/bin/env python3
+import argparse
+import dataclasses
+import itertools
+import json
+from pathlib import Path
+
+THIS_DIR = Path(__file__).parent.resolve()
+
+_BASE_CMAKE_ARGS = [
+    "-Dtests=ON",
+    "-Dwerr=ON",
+    "-Dxrpld=ON",
+    "-Dwextra=ON",
+    "-Drust=ON",
+]
+
+# Maps sanitizer names (as used in cmake) to short config-name suffixes.
+_SANITIZER_SUFFIX: dict[str, str] = {
+    "address": "asan",
+    "undefinedbehavior": "ubsan",
+    "thread": "tsan",
+}
+
+
+def get_cmake_args(build_type: str, extra_args: str) -> str:
+    """Get the full list of CMake arguments for a config."""
+    args = _BASE_CMAKE_ARGS.copy()
+    if extra_args:
+        args.extend(extra_args.split())
+    return " ".join(args)
+
+
+# ---------------------------------------------------------------------------
+# Input types — shapes of the JSON config files
+# ---------------------------------------------------------------------------
+
+
+# Every config must declare 'minimal'. Minimal configs form the reduced matrix
+# built for pull requests by default; the full matrix adds the rest. Packaging
+# configs declare it too, but packaging is gated in the workflow, not by it.
+#
+# Configs may also opt into 'benchmark' to smoke-run the benchmarks. Note that
+# the flag applies to every entry a config expands into, so only set it on
+# configs that expand to a single combination.
+
+
+@dataclasses.dataclass
+class LinuxConfig:
+    """One entry in linux.json's 'configs' or 'package_configs' arrays."""
+
+    compiler: list[str]
+    build_type: list[str]
+    arch: list[str]
+    minimal: bool
+    benchmark: bool = False  # if true, smoke-run the benchmarks after testing
+    sanitizers: list[str] = dataclasses.field(default_factory=list)
+    suffix: str = ""
+    extra_cmake_args: str = ""
+    image: str = ""  # only used by package_configs entries
+
+
+@dataclasses.dataclass
+class LinuxFile:
+    """Shape of linux.json."""
+
+    image_tag: str
+    configs: dict[str, list[LinuxConfig]]  # distro → configs
+    package_configs: dict[str, list[LinuxConfig]]  # distro → packaging configs
+
+    @classmethod
+    def load(cls, path: Path) -> "LinuxFile":
+        data = json.loads(path.read_text())
+
+        def parse(section: dict) -> dict[str, list[LinuxConfig]]:
+            return {
+                distro: [LinuxConfig(**c) for c in cfgs]
+                for distro, cfgs in section.items()
+            }
+
+        return cls(
+            image_tag=data["image_tag"],
+            configs=parse(data["configs"]),
+            package_configs=parse(data.get("package_configs", {})),
+        )
+
+
+@dataclasses.dataclass
+class PlatformConfig:
+    """One entry in macos.json's or windows.json's 'configs' array."""
+
+    build_type: list[str]
+    minimal: bool
+    build_only: bool = False  # if true, skip tests (e.g. macos/Windows Debug)
+    benchmark: bool = False  # if true, smoke-run the benchmarks after testing
+    extra_cmake_args: str = ""
+    # "" is the runner's system compiler, "nix" the flake's CI environment.
+    # macOS only: Linux always builds in a Nix image, Windows has no Nix.
+    toolchain: str = ""
+
+    def __post_init__(self) -> None:
+        if isinstance(self.build_type, str):
+            self.build_type = [self.build_type]
+
+
+@dataclasses.dataclass
+class PlatformFile:
+    """Shape of macos.json and windows.json."""
+
+    platform: str  # e.g. "macos/arm64" or "windows/amd64"
+    runner: list[str]  # GitHub Actions runner labels
+    configs: list[PlatformConfig]
+
+    @classmethod
+    def load(cls, path: Path) -> "PlatformFile":
+        data = json.loads(path.read_text())
+        return cls(
+            platform=data["platform"],
+            runner=data["runner"],
+            configs=[PlatformConfig(**c) for c in data["configs"]],
+        )
+
+
+# ---------------------------------------------------------------------------
+# Output types — shapes of the generated GitHub Actions matrix entries
+# ---------------------------------------------------------------------------
+
+
+@dataclasses.dataclass
+class Architecture:
+    platform: str
+    runner: list[str]
+
+
+@dataclasses.dataclass
+class MatrixEntry:
+    """One entry in the generated build/test strategy matrix."""
+
+    config_name: str
+    cmake_args: str
+    cmake_target: str
+    build_only: bool
+    benchmark: bool
+    build_type: str
+    architecture: Architecture
+    sanitizers: str
+    image: str = ""  # container image; empty for macOS/Windows (runs natively)
+    compiler: str = ""  # compiler name ("gcc" or "clang"); empty for macOS/Windows
+    toolchain: str = ""  # "nix" for the flake's CI environment; see PlatformConfig
+
+
+@dataclasses.dataclass
+class PackagingEntry:
+    """One entry in the generated packaging strategy matrix."""
+
+    xrpld_artifact_name: str
+    validator_keys_artifact_name: str
+    image: str
+    distro: str  # e.g. "debian" or "rhel"; drives package-format-specific steps
+
+
+# ---------------------------------------------------------------------------
+# Matrix expansion
+# ---------------------------------------------------------------------------
+
+_ARCHS: dict[str, Architecture] = {
+    "amd64": Architecture(
+        platform="linux/amd64", runner=["self-hosted", "Linux", "X64", "heavy"]
+    ),
+    "arm64": Architecture(
+        platform="linux/arm64",
+        runner=["self-hosted", "Linux", "ARM64", "heavy-arm64"],
+    ),
+}
+
+
+def expand_linux_matrix(linux: LinuxFile, minimal: bool) -> list[MatrixEntry]:
+    """Expand a LinuxFile into a flat list of matrix entries.
+
+    Each config entry is expanded over the cross-product of its
+    compiler, build_type, sanitizers, and architecture lists. When 'minimal' is
+    true, only configs flagged as minimal are included.
+    """
+    entries: list[MatrixEntry] = []
+
+    for distro, configs in linux.configs.items():
+        for cfg in configs:
+            if minimal and not cfg.minimal:
+                continue
+            # An empty sanitizers list means "one entry with no sanitizer".
+            effective_sanitizers = cfg.sanitizers or [""]
+            effective_archs = {arch: _ARCHS[arch] for arch in cfg.arch}
+
+            for compiler, build_type, sanitizer, (arch, arch_info) in itertools.product(
+                cfg.compiler,
+                cfg.build_type,
+                effective_sanitizers,
+                effective_archs.items(),
+            ):
+                name = f"{distro}-{compiler}-{build_type.lower()}-{arch}"
+                suffix_parts = [
+                    s for s in [cfg.suffix, _SANITIZER_SUFFIX.get(sanitizer, "")] if s
+                ]
+                if suffix_parts:
+                    name += "-" + "-".join(suffix_parts)
+
+                entries.append(
+                    MatrixEntry(
+                        config_name=name,
+                        image=f"ghcr.io/xrplf/xrpld/nix-{distro}:{linux.image_tag}",
+                        cmake_args=get_cmake_args(build_type, cfg.extra_cmake_args),
+                        cmake_target="all",
+                        build_only=False,
+                        benchmark=cfg.benchmark,
+                        build_type=build_type,
+                        architecture=arch_info,
+                        sanitizers=sanitizer,
+                        compiler=compiler,
+                    )
+                )
+
+    return entries
+
+
+def expand_linux_packaging(linux: LinuxFile) -> list[PackagingEntry]:
+    """Generate the packaging matrix from a LinuxFile's package_configs section.
+
+    Packaging uses vanilla distro images (debian:bookworm, almalinux:9) instead of
+    the nix-based build images, because deb/rpm tooling (debhelper, rpm-build)
+    is taken from the distro's archive rather than from nixpkgs. Each config
+    entry carries its own 'image'.
+
+    The artifact names must match what the build job uploads: one artifact per
+    binary, each named after the build config.
+    """
+    entries = []
+    for distro, configs in linux.package_configs.items():
+        for cfg in configs:
+            for compiler, build_type in itertools.product(cfg.compiler, cfg.build_type):
+                config_name = f"{distro}-{compiler}-{build_type.lower()}-amd64"
+                entries.append(
+                    PackagingEntry(
+                        xrpld_artifact_name=f"xrpld-{config_name}",
+                        validator_keys_artifact_name=f"validator-keys-{config_name}",
+                        image=cfg.image,
+                        distro=distro,
+                    )
+                )
+
+    return entries
+
+
+def expand_platform_matrix(pf: PlatformFile, minimal: bool) -> list[MatrixEntry]:
+    """Expand a PlatformFile (macOS or Windows) into matrix entries.
+
+    When 'minimal' is true, only configs flagged as minimal are included.
+    """
+    platform_name, arch = pf.platform.split("/")
+    is_windows = platform_name == "windows"
+
+    entries: list[MatrixEntry] = []
+    for cfg in pf.configs:
+        if minimal and not cfg.minimal:
+            continue
+        for build_type in cfg.build_type:
+            name = f"{platform_name}-{arch}-{build_type.lower()}"
+            if cfg.toolchain:
+                name += f"-{cfg.toolchain}"
+            entries.append(
+                MatrixEntry(
+                    config_name=name,
+                    cmake_args=get_cmake_args(build_type, cfg.extra_cmake_args),
+                    cmake_target="install" if is_windows else "all",
+                    build_only=cfg.build_only,
+                    benchmark=cfg.benchmark,
+                    build_type=build_type,
+                    architecture=Architecture(platform=pf.platform, runner=pf.runner),
+                    sanitizers="",
+                    toolchain=cfg.toolchain,
+                )
+            )
+    return entries
+
+
+# ---------------------------------------------------------------------------
+# Entry point
+# ---------------------------------------------------------------------------
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        description="Generate a CI strategy matrix for all platforms or a specific one."
+    )
+    parser.add_argument(
+        "-c",
+        "--config",
+        help="Platform to generate for ('linux', 'macos', or 'windows'). Defaults to all platforms.",
+        choices=["linux", "macos", "windows"],
+        default=None,
+    )
+    parser.add_argument(
+        "-p",
+        "--packaging",
+        help="Emit the Linux packaging matrix instead of the build/test matrix.",
+        action="store_true",
+    )
+    parser.add_argument(
+        "-m",
+        "--minimal",
+        help="Emit only the minimal matrix (the configs flagged 'minimal'), "
+        "used for pull requests by default. If omitted, the full matrix is "
+        "emitted.",
+        action="store_true",
+    )
+    args = parser.parse_args()
+
+    matrix: list[MatrixEntry] | list[PackagingEntry] = []
+
+    if args.packaging:
+        matrix = expand_linux_packaging(LinuxFile.load(THIS_DIR / "linux.json"))
+    else:
+        if args.config in ("linux", None):
+            matrix += expand_linux_matrix(
+                LinuxFile.load(THIS_DIR / "linux.json"), args.minimal
+            )
+        if args.config in ("macos", None):
+            matrix += expand_platform_matrix(
+                PlatformFile.load(THIS_DIR / "macos.json"), args.minimal
+            )
+        if args.config in ("windows", None):
+            matrix += expand_platform_matrix(
+                PlatformFile.load(THIS_DIR / "windows.json"), args.minimal
+            )
+
+    print(f"matrix={json.dumps({'include': [dataclasses.asdict(e) for e in matrix]})}")
--- a/.github/scripts/strategy-matrix/linux.json
+++ b/.github/scripts/strategy-matrix/linux.json
@@ -0,0 +1,109 @@
+{
+  "image_tag": "sha-a0074f8",
+  "configs": {
+    "ubuntu": [
+      {
+        "compiler": ["gcc"],
+        "build_type": ["Debug"],
+        "arch": ["amd64"],
+        "minimal": true,
+        "suffix": "coverage",
+        "extra_cmake_args": "-DUNIT_TEST_REFERENCE_FEE=500 -Dcoverage=ON -Dcoverage_format=xml -DCODE_COVERAGE_VERBOSE=ON -DCMAKE_C_FLAGS=-O0 -DCMAKE_CXX_FLAGS=-O0"
+      },
+      {
+        "compiler": ["clang"],
+        "build_type": ["Release"],
+        "arch": ["amd64"],
+        "minimal": true,
+        "benchmark": true
+      },
+
+      {
+        "compiler": ["gcc"],
+        "build_type": ["Release"],
+        "arch": ["amd64"],
+        "minimal": false
+      },
+      {
+        "compiler": ["gcc", "clang"],
+        "build_type": ["Debug", "Release"],
+        "arch": ["arm64"],
+        "minimal": false
+      },
+
+      {
+        "compiler": ["gcc", "clang"],
+        "build_type": ["Debug", "Release"],
+        "arch": ["amd64"],
+        "minimal": false,
+        "sanitizers": ["address", "undefinedbehavior"]
+      },
+
+      {
+        "compiler": ["clang"],
+        "build_type": ["Debug"],
+        "arch": ["amd64"],
+        "minimal": false,
+        "suffix": "voidstar",
+        "extra_cmake_args": "-Dvoidstar=ON"
+      },
+      {
+        "compiler": ["clang"],
+        "build_type": ["Release"],
+        "arch": ["amd64"],
+        "minimal": false,
+        "suffix": "reffee",
+        "extra_cmake_args": "-DUNIT_TEST_REFERENCE_FEE=1000"
+      },
+      {
+        "compiler": ["gcc"],
+        "build_type": ["Debug"],
+        "arch": ["amd64"],
+        "minimal": false,
+        "suffix": "unity",
+        "extra_cmake_args": "-Dunity=ON"
+      }
+    ],
+
+    "debian": [
+      {
+        "compiler": ["gcc"],
+        "build_type": ["Release"],
+        "arch": ["amd64"],
+        "minimal": false,
+        "extra_cmake_args": "-Dvalidator_keys=ON"
+      }
+    ],
+
+    "rhel": [
+      {
+        "compiler": ["gcc"],
+        "build_type": ["Release"],
+        "arch": ["amd64"],
+        "minimal": false,
+        "extra_cmake_args": "-Dvalidator_keys=ON"
+      }
+    ]
+  },
+  "package_configs": {
+    "debian": [
+      {
+        "compiler": ["gcc"],
+        "build_type": ["Release"],
+        "arch": ["amd64"],
+        "minimal": false,
+        "image": "ghcr.io/xrplf/xrpld/packaging-debian:sha-a6983f8"
+      }
+    ],
+
+    "rhel": [
+      {
+        "compiler": ["gcc"],
+        "build_type": ["Release"],
+        "arch": ["amd64"],
+        "minimal": false,
+        "image": "ghcr.io/xrplf/xrpld/packaging-rhel:sha-a6983f8"
+      }
+    ]
+  }
+}
--- a/.github/scripts/strategy-matrix/macos.json
+++ b/.github/scripts/strategy-matrix/macos.json
@@ -0,0 +1,30 @@
+{
+  "platform": "macos/arm64",
+  "runner": ["self-hosted", "macOS", "ARM64", "macos-26-apple-clang-21"],
+  "configs": [
+    {
+      "build_type": "Release",
+      "extra_cmake_args": "-DCMAKE_POLICY_VERSION_MINIMUM=3.5",
+      "minimal": true
+    },
+    {
+      "build_type": "Debug",
+      "extra_cmake_args": "-DCMAKE_POLICY_VERSION_MINIMUM=3.5",
+      "build_only": true,
+      "minimal": false
+    },
+    {
+      "build_type": "Release",
+      "extra_cmake_args": "-DCMAKE_POLICY_VERSION_MINIMUM=3.5",
+      "toolchain": "nix",
+      "minimal": false
+    },
+    {
+      "build_type": "Debug",
+      "extra_cmake_args": "-DCMAKE_POLICY_VERSION_MINIMUM=3.5",
+      "toolchain": "nix",
+      "build_only": true,
+      "minimal": false
+    }
+  ]
+}
--- a/.github/scripts/strategy-matrix/windows.json
+++ b/.github/scripts/strategy-matrix/windows.json
@@ -0,0 +1,12 @@
+{
+  "platform": "windows/amd64",
+  "runner": ["self-hosted", "Windows", "dev-box-windows-2026"],
+  "configs": [
+    { "build_type": "Release", "minimal": true },
+    {
+      "build_type": "Debug",
+      "build_only": true,
+      "minimal": false
+    }
+  ]
+}
--- a/.github/scripts/telemetry/check_bucket_parity.py
+++ b/.github/scripts/telemetry/check_bucket_parity.py
@@ -0,0 +1,128 @@
+#!/usr/bin/env python3
+"""Assert the C++ millisecond ladder agrees with the collector's spanmetrics ladder.
+
+The two are specified to match so a span-derived latency panel and a native
+histogram panel can be read on the same scale. They *were* identical when first
+shipped. Then the collector ladder alone was extended -- sub-millisecond edges
+below 1ms and second-scale edges up to 30s -- and nothing checked the other
+side, so the C++ ladder stayed capped at 5s. Every quantile above 5s then read
+back as a flat 5000, because Prometheus returns the second-highest edge for a
+quantile landing in the `+Inf` bucket. That looks like a measurement rather
+than an error, which is why it survived for eleven phases.
+
+The rule is containment, not equality:
+
+  * every representable collector edge MUST appear in the C++ ladder, so the
+    shared range reads identically;
+  * the C++ ladder MAY carry extra edges ABOVE the collector's highest edge,
+    because jobs outlive spans -- the updatepaths job type was measured
+    averaging ~60s, which no span approaches. Demanding equality would force a
+    ceiling that censors it, reintroducing the bug this guards against;
+  * collector edges below 1ms are expected to be ABSENT rather than missing:
+    beast::insight::Event rounds every duration up to a whole millisecond
+    before it reaches the histogram, so those edges could never collect a
+    sample.
+
+Exit 0 when the ladders agree, 1 with a diff when they do not.
+"""
+
+import re
+import sys
+from pathlib import Path
+
+HEADER = Path("include/xrpl/telemetry/HistogramBuckets.h")
+COLLECTOR = Path("docker/telemetry/otel-collector-config.yaml")
+
+# beast::insight::Event applies ceil<milliseconds>, so anything below 1ms
+# collapses onto the 1ms edge.
+REPRESENTABLE_FLOOR_MS = 1.0
+
+UNIT_TO_MS = {"ms": 1.0, "s": 1000.0}
+
+
+def collector_edges_ms():
+    """Parse the spanmetrics bucket list, normalising each edge to milliseconds."""
+    text = COLLECTOR.read_text()
+    match = re.search(r"buckets:\s*\[(.*?)\]", text, re.S)
+    if not match:
+        sys.exit(f"{COLLECTOR}: no 'buckets:' list found")
+
+    edges = []
+    for raw in match.group(1).split(","):
+        token = raw.strip()
+        if not token:
+            continue
+        parsed = re.fullmatch(r"([0-9.]+)(ms|s)", token)
+        if not parsed:
+            sys.exit(f"{COLLECTOR}: cannot parse bucket edge {token!r}")
+        edges.append(float(parsed.group(1)) * UNIT_TO_MS[parsed.group(2)])
+    return edges
+
+
+def cpp_edges_ms():
+    """Parse kMillisecondBuckets out of the header that owns every ladder."""
+    text = HEADER.read_text()
+    match = re.search(r"kMillisecondBuckets\{(.*?)\};", text, re.S)
+    if not match:
+        sys.exit(f"{HEADER}: kMillisecondBuckets not found")
+    return [
+        float(token.strip().replace("'", ""))
+        for token in match.group(1).split(",")
+        if token.strip()
+    ]
+
+
+def main():
+    collector = collector_edges_ms()
+    cpp = cpp_edges_ms()
+    required = [edge for edge in collector if edge >= REPRESENTABLE_FLOOR_MS]
+    if not required:
+        sys.exit(f"{COLLECTOR}: no edges at or above {REPRESENTABLE_FLOOR_MS} ms")
+    collector_top = max(required)
+
+    missing = [edge for edge in required if edge not in cpp]
+    # An extra C++ edge inside the collector's range means the two scales
+    # disagree where they overlap. Above the collector's top it is a deliberate
+    # extension.
+    inside_range = [e for e in cpp if e not in required and e < collector_top]
+
+    if not missing and not inside_range:
+        extensions = [e for e in cpp if e > collector_top]
+        summary = f"OK: all {len(required)} representable collector edges present"
+        if extensions:
+            pretty = ", ".join(f"{e:g}" for e in extensions)
+            summary += (
+                f"; {len(extensions)} extension edge(s) above "
+                f"{collector_top:g} ms: [{pretty}]"
+            )
+        print(summary)
+        return 0
+
+    print("Bucket ladder parity violated.", file=sys.stderr)
+    print(
+        f"  collector (>= {REPRESENTABLE_FLOOR_MS:g} ms): "
+        f"{[f'{e:g}' for e in required]}",
+        file=sys.stderr,
+    )
+    print(
+        f"  HistogramBuckets.h            : {[f'{e:g}' for e in cpp]}", file=sys.stderr
+    )
+    for edge in missing:
+        print(f"  MISSING from the C++ ladder: {edge:g} ms", file=sys.stderr)
+    for edge in inside_range:
+        print(
+            f"  C++ edge {edge:g} ms lies inside the collector's range but is not "
+            "a collector edge -- add it to the collector or drop it here",
+            file=sys.stderr,
+        )
+    print(
+        "\nThe two ladders must agree over their shared range. Extra C++ edges are\n"
+        "permitted only ABOVE the collector's highest edge. Change both sides, or\n"
+        "change the spec in OpenTelemetryPlan/Phase7_taskList.md.",
+        file=sys.stderr,
+    )
+    return 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())
--- a/.github/workflows/build-nix-images.yml
+++ b/.github/workflows/build-nix-images.yml
@@ -0,0 +1,66 @@
+name: Build `nix` Docker images
+
+on:
+  push:
+    branches:
+      - develop
+    paths:
+      - ".github/workflows/build-nix-images.yml"
+      - "flake.nix"
+      - "flake.lock"
+      - "rust-toolchain.toml"
+      - "nix/**"
+      - "!nix/docker/README.md"
+      - "!nix/devshell.nix"
+      - "bin/check-tools.sh"
+      - "bin/default-loader-path.sh"
+      - "bin/install-sanitizer-libs.sh"
+  pull_request:
+    paths:
+      - ".github/workflows/build-nix-images.yml"
+      - "flake.nix"
+      - "flake.lock"
+      - "rust-toolchain.toml"
+      - "nix/**"
+      - "!nix/docker/README.md"
+      - "!nix/devshell.nix"
+      - "bin/check-tools.sh"
+      - "bin/default-loader-path.sh"
+      - "bin/install-sanitizer-libs.sh"
+  workflow_dispatch:
+
+concurrency:
+  # Read `on-trigger.yml` for the rationale behind this concurrency group name.
+  group: ${{ github.workflow }}-${{ github.event_name == 'push' && github.ref == 'refs/heads/develop' && github.sha || github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  build-merge:
+    name: Build and push `nix-${{ matrix.distro.name }}` image
+    permissions:
+      contents: read
+      packages: write
+    strategy:
+      fail-fast: false
+      matrix:
+        # The base images are the oldest supported version of each distro
+        # that we want to build images for.
+        distro:
+          - name: nixos
+            base_image: nixos/nix:latest
+          - name: ubuntu
+            base_image: ubuntu:20.04
+          - name: debian
+            base_image: debian:bookworm
+          - name: rhel
+            base_image: registry.access.redhat.com/ubi9/ubi:latest
+    uses: XRPLF/actions/.github/workflows/build-multiarch-image.yml@9e7e4e80af9e684c116b38369add8eea64451f32
+    with:
+      image_name: xrpld/nix-${{ matrix.distro.name }}
+      dockerfile: nix/docker/Dockerfile
+      base_image: ${{ matrix.distro.base_image }}
+      push: ${{ github.event_name == 'push' }}
--- a/.github/workflows/build-packaging-images.yml
+++ b/.github/workflows/build-packaging-images.yml
@@ -0,0 +1,47 @@
+name: Build `packaging` Docker images
+
+on:
+  push:
+    branches:
+      - develop
+    paths:
+      - ".github/workflows/build-packaging-images.yml"
+      - "package/Dockerfile"
+      - "package/install-packaging-tools.sh"
+  pull_request:
+    paths:
+      - ".github/workflows/build-packaging-images.yml"
+      - "package/Dockerfile"
+      - "package/install-packaging-tools.sh"
+  workflow_dispatch:
+
+concurrency:
+  # Read `on-trigger.yml` for the rationale behind this concurrency group name.
+  group: ${{ github.workflow }}-${{ github.event_name == 'push' && github.ref == 'refs/heads/develop' && github.sha || github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  build-merge:
+    name: Build and push `packaging-${{ matrix.distro.name }}` image
+    permissions:
+      contents: read
+      packages: write
+    strategy:
+      fail-fast: false
+      matrix:
+        distro:
+          - name: debian
+            base_image: debian:bookworm
+          # AlmaLinux rather than UBI9, which does not ship rpm-sign.
+          - name: rhel
+            base_image: almalinux:9
+    uses: XRPLF/actions/.github/workflows/build-multiarch-image.yml@9e7e4e80af9e684c116b38369add8eea64451f32
+    with:
+      image_name: xrpld/packaging-${{ matrix.distro.name }}
+      dockerfile: package/Dockerfile
+      base_image: ${{ matrix.distro.base_image }}
+      push: ${{ github.event_name == 'push' }}
--- a/.github/workflows/build-pre-commit-image.yml
+++ b/.github/workflows/build-pre-commit-image.yml
@@ -0,0 +1,38 @@
+name: Build `pre-commit` Docker image
+
+on:
+  push:
+    branches:
+      - develop
+    paths:
+      - ".github/workflows/build-pre-commit-image.yml"
+      - "bin/pre-commit/Dockerfile"
+      - "rust-toolchain.toml"
+  pull_request:
+    paths:
+      - ".github/workflows/build-pre-commit-image.yml"
+      - "bin/pre-commit/Dockerfile"
+      - "rust-toolchain.toml"
+  workflow_dispatch:
+
+concurrency:
+  # Read `on-trigger.yml` for the rationale behind this concurrency group name.
+  group: ${{ github.workflow }}-${{ github.event_name == 'push' && github.ref == 'refs/heads/develop' && github.sha || github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  build-merge:
+    name: Build and push `pre-commit` image
+    permissions:
+      contents: read
+      packages: write
+    uses: XRPLF/actions/.github/workflows/build-multiarch-image.yml@9e7e4e80af9e684c116b38369add8eea64451f32
+    with:
+      image_name: xrpld/pre-commit
+      dockerfile: bin/pre-commit/Dockerfile
+      base_image: ubuntu:26.04
+      push: ${{ github.event_name == 'push' }}
--- a/.github/workflows/cargo-audit.yml
+++ b/.github/workflows/cargo-audit.yml
@@ -0,0 +1,80 @@
+name: Cargo audit
+
+on:
+  schedule:
+    # 06:32 UTC every Monday.
+    - cron: "32 6 * * 1"
+  push:
+    branches:
+      - "develop"
+      - "release/*"
+    paths:
+      - "crates/**/Cargo.toml"
+      - "crates/Cargo.lock"
+      - ".github/workflows/cargo-audit.yml"
+  pull_request:
+    paths:
+      - "crates/**/Cargo.toml"
+      - "crates/Cargo.lock"
+      - ".github/workflows/cargo-audit.yml"
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+    working-directory: crates
+
+permissions:
+  contents: read
+
+jobs:
+  audit:
+    runs-on: ubuntu-latest
+    container: ghcr.io/xrplf/xrpld/nix-ubuntu:sha-a0074f8
+    permissions:
+      contents: read
+      # Needed to open an issue on scheduled failures.
+      issues: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Run cargo audit
+        id: audit
+        continue-on-error: true
+        run: |
+          set -o pipefail
+          cargo audit | tee /tmp/cargo-audit.txt
+
+      - name: Prepare issue body
+        if: ${{ steps.audit.outcome != 'success' && github.event_name == 'schedule' }}
+        run: |
+          {
+              echo "## \`cargo audit\` found advisories"
+              echo
+              echo '```'
+              cat /tmp/cargo-audit.txt
+              echo '```'
+              echo
+              echo "---"
+              echo "*This issue was automatically created by the cargo-audit workflow.*"
+          } >/tmp/cargo-audit-issue.md
+
+      - name: Create issue
+        if: ${{ steps.audit.outcome != 'success' && github.event_name == 'schedule' }}
+        uses: XRPLF/actions/create-issue@2b8bc36af85b88bca0dd7bfac2e2dc05f94ad712
+        with:
+          title: "cargo audit found vulnerabilities"
+          body_file: /tmp/cargo-audit-issue.md
+          labels: "Bug,Security"
+
+      - name: Fail if advisories were found
+        if: ${{ steps.audit.outcome != 'success' }}
+        run: |
+          echo "cargo audit found advisories!"
+          cat /tmp/cargo-audit.txt
+          exit 1
--- a/.github/workflows/check-pr-commits.yml
+++ b/.github/workflows/check-pr-commits.yml
@@ -0,0 +1,13 @@
+name: Check PR commits
+
+on:
+  pull_request_target:
+
+# The action needs to have write permissions to post comments on the PR.
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  check_commits:
+    uses: XRPLF/actions/.github/workflows/check-pr-commits.yml@e2c7f400d1e85ae65dad552fd425169fbacca4a3
--- a/.github/workflows/check-pr-description.yml
+++ b/.github/workflows/check-pr-description.yml
@@ -0,0 +1,39 @@
+name: Check PR description
+
+on:
+  merge_group:
+    types:
+      - checks_requested
+  pull_request:
+    types:
+      - opened
+      - edited
+      - reopened
+      - synchronize
+      - ready_for_review
+    branches:
+      - develop
+      - "release-*"
+      - "release/*"
+      - "staging/*"
+
+jobs:
+  check_description:
+    if: ${{ github.event.pull_request.draft != true }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Write PR body to file
+        env:
+          PR_BODY: ${{ github.event.pull_request.body }}
+        if: ${{ github.event_name == 'pull_request' }}
+        run: printenv PR_BODY >pr_body.md
+
+      - name: Check PR description differs from template
+        if: ${{ github.event_name == 'pull_request' }}
+        run: |
+          python .github/scripts/check-pr-description.py \
+              --template-file .github/pull_request_template.md \
+              --pr-body-file pr_body.md
--- a/.github/workflows/check-pr-title.yml
+++ b/.github/workflows/check-pr-title.yml
@@ -0,0 +1,23 @@
+name: Check PR title
+
+on:
+  merge_group:
+    types:
+      - checks_requested
+  pull_request:
+    types:
+      - opened
+      - edited
+      - reopened
+      - synchronize
+      - ready_for_review
+    branches:
+      - develop
+      - "release-*"
+      - "release/*"
+      - "staging/*"
+
+jobs:
+  check_title:
+    if: ${{ github.event.pull_request.draft != true }}
+    uses: XRPLF/actions/.github/workflows/check-pr-title.yml@d7c65e49225a38f6d8010eacf017bb5a98d7476c
--- a/.github/workflows/check-tools.yml
+++ b/.github/workflows/check-tools.yml
@@ -0,0 +1,114 @@
+# Verifies the committed snapshots of `bin/check-tools.sh` output for each Nix
+# environment (see nix/check-tools/). If the environment changes — a new image
+# tag, an updated flake.lock, a different tool list — without the matching
+# snapshot being regenerated and committed, this workflow fails so the drift is
+# caught in review.
+#
+# To regenerate the snapshots, see nix/check-tools/README.md.
+name: Check tools
+
+on:
+  pull_request:
+    paths:
+      - ".github/workflows/check-tools.yml"
+      - ".github/scripts/strategy-matrix/linux.json"
+      - "bin/check-tools.sh"
+      - "nix/**"
+      - "flake.nix"
+      - "flake.lock"
+      - "rust-toolchain.toml"
+  push:
+    branches:
+      - "develop"
+    paths:
+      - ".github/workflows/check-tools.yml"
+      - ".github/scripts/strategy-matrix/linux.json"
+      - "bin/check-tools.sh"
+      - "nix/**"
+      - "flake.nix"
+      - "flake.lock"
+      - "rust-toolchain.toml"
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  # The nix-nixos image tag is pinned alongside the build matrix in linux.json,
+  # so snapshots are checked against the exact image CI builds against.
+  linux-image-tag:
+    runs-on: ubuntu-latest
+    outputs:
+      tag: ${{ steps.tag.outputs.tag }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Read nix image tag
+        id: tag
+        run: echo "tag=$(jq -r .image_tag .github/scripts/strategy-matrix/linux.json)" >>"${GITHUB_OUTPUT}"
+
+  # One job for all environments; they differ only in whether the tools come
+  # from the nix-nixos container (Linux) or `nix develop` (macOS).
+  check-tools:
+    needs: linux-image-tag
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - runner: ubuntu-latest
+            snapshot: nix/check-tools/nix-ubuntu-amd64.txt
+            nix_develop: false
+          - runner: ubuntu-24.04-arm
+            snapshot: nix/check-tools/nix-ubuntu-arm64.txt
+            nix_develop: false
+          - runner: macos-26-apple-clang-21
+            snapshot: nix/check-tools/macos.txt
+            nix_develop: true
+    runs-on: ${{ matrix.runner }}
+    # Linux runs inside the pinned nix-nixos image; macOS runs natively and uses
+    # the flake's dev shell instead (see the run step below).
+    container: ${{ !matrix.nix_develop && format('ghcr.io/xrplf/xrpld/nix-ubuntu:{0}', needs.linux-image-tag.outputs.tag) || null }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Prepare runner
+        uses: XRPLF/actions/prepare-runner@51af40f99ea91a08c3528ddf16d98132dcc7e63c
+        with:
+          enable_ccache: false
+
+      - name: Regenerate snapshot
+        env:
+          CHECK_TOOLS_SKIP_CLONE: "1"
+          # check-tools.sh skips some macOS tools when CI is set; the snapshots
+          # capture the full `nix develop` environment, so unset it here.
+          CI: ""
+        run: |
+          if [ "${{ matrix.nix_develop }}" = "true" ]; then
+              # `nix develop` prints the dev-shell greeting first; keep only the
+              # check-tools.sh output (from the "Detected OS:" line onward).
+              nix --extra-experimental-features "nix-command flakes" develop \
+                  -c bash bin/check-tools.sh | sed -n '/^Detected OS:/,$p' >"${{ matrix.snapshot }}"
+          else
+              bash bin/check-tools.sh >"${{ matrix.snapshot }}"
+          fi
+
+      - name: Verify snapshot is up to date
+        run: |
+          if ! git diff --exit-code -- "${{ matrix.snapshot }}"; then
+              echo "::error::${{ matrix.snapshot }} is out of date. Regenerate it (see nix/check-tools/README.md) and commit the result."
+              exit 1
+          fi
+
+      - name: Upload regenerated snapshot
+        if: failure()
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: check-tools-${{ runner.os }}-${{ runner.arch }}
+          path: ${{ matrix.snapshot }}
--- a/.github/workflows/conflicting-pr.yml
+++ b/.github/workflows/conflicting-pr.yml
@@ -0,0 +1,26 @@
+name: Label PRs with merge conflicts
+
+on:
+  # So that PRs touching the same files as the push are updated.
+  push:
+  # So that the `dirtyLabel` is removed if conflicts are resolved.
+  # We recommend `pull_request_target` so that github secrets are available.
+  # In `pull_request` we wouldn't be able to change labels of fork PRs.
+  pull_request_target:
+    types: [synchronize]
+
+permissions:
+  pull-requests: write
+
+jobs:
+  main:
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'IgnoreConflicts') }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check if PRs are dirty
+        uses: eps1lon/actions-label-merge-conflict@0273be72a0bbd58fcd71d0d6c02c209b50d1e5e1 # v3.1.0
+        with:
+          dirtyLabel: "PR: has conflicts"
+          repoToken: "${{ secrets.GITHUB_TOKEN }}"
+          commentOnDirty: "This PR has conflicts, please resolve them in order for the PR to be reviewed."
+          commentOnClean: "All conflicts have been resolved. Assigned reviewers can now start or resume their review."
--- a/.github/workflows/on-pr.yml
+++ b/.github/workflows/on-pr.yml
@@ -0,0 +1,254 @@
+# This workflow runs workflows to check, build and test the project
+# on every meaningful change on pull_request.
+# However, it will not run if the PR is a draft
+# unless it has the 'DraftRunCI' or 'Full CI build' label.
+#
+# By default a PR builds only a minimal matrix.
+# The full matrix runs once the PR is labeled "Ready to merge" or "Full CI build".
+# For commits to PRs that target a release branch,
+# it also uploads the libxrpl recipe to the Conan remote.
+name: PR
+
+on:
+  merge_group:
+    types:
+      - checks_requested
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+      - ready_for_review
+      # Trigger on label changes so toggling "Ready to merge" or "Full CI build"
+      # switches between the minimal and full matrix without needing a new push.
+      - labeled
+      - unlabeled
+
+concurrency:
+  # A single per-ref group with cancel-in-progress means any newer run (a push
+  # or a label change) supersedes the in-progress one for that ref. Keeping
+  # exactly one authoritative run per ref ensures a fast do-nothing run can never
+  # mask a real build's checks.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  # This job determines whether the rest of the workflow should run at all,
+  # based on the current set of labels: it runs when the PR is not a draft
+  # (which should also cover merge-group) or has the 'DraftRunCI' or
+  # 'Full CI build' label. Whether a build then happens, and whether it is the
+  # minimal or full matrix, is decided further below and in the strategy matrix.
+  should-run:
+    if: >-
+      ${{
+        !github.event.pull_request.draft
+        || contains(github.event.pull_request.labels.*.name, 'DraftRunCI')
+        || contains(github.event.pull_request.labels.*.name, 'Full CI build')
+      }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Determine changed files
+        # This step checks whether any files have changed that should
+        # cause the next jobs to run. We do it this way rather than
+        # using `paths` in the `on:` section, because all required
+        # checks must pass, even for changes that do not modify anything
+        # that affects those checks. We would therefore like to make the
+        # checks required only if the job runs, but GitHub does not
+        # support that directly. By always executing the workflow on new
+        # commits and by using the changed-files action below, we ensure
+        # that Github considers any skipped jobs to have passed, and in
+        # turn the required checks as well.
+        id: changes
+        uses: tj-actions/changed-files@9426d40962ed5378910ee2e21d5f8c6fcbf2dd96 # v47.0.6
+        with:
+          files: |
+            # These paths are unique to `on-pr.yml`.
+            .github/scripts/levelization/**
+            .github/scripts/otel-naming/**
+            .github/scripts/rename/**
+            .github/scripts/telemetry/**
+            .github/workflows/reusable-check-levelization.yml
+            .github/workflows/reusable-check-otel-naming.yml
+            .github/workflows/reusable-check-rename.yml
+            .github/workflows/on-pr.yml
+
+            # The non-code layers the OTel naming check validates: the docs that
+            # publish attribute tables (Rule E) and the telemetry stack config —
+            # collector, Tempo, dashboards (Rules B, C, D). Without these paths a
+            # docs-only or dashboard-only pull request sets `go=false`, so the
+            # very layers those rules exist to police would never be checked.
+            # As with `README.md` below, matching one of these also switches on
+            # the rest of the workflow; there is a single `go` gate.
+            docs/**
+            docker/telemetry/**
+
+            # Keep the paths below in sync with those in `on-trigger.yml`.
+            .github/actions/build-deps/**
+            .github/actions/release-info/**
+            .github/actions/setup-conan/**
+            .github/actions/setup-nix-env/**
+            .github/scripts/strategy-matrix/**
+            .github/workflows/reusable-build-test-config.yml
+            .github/workflows/reusable-build-test.yml
+            .github/workflows/reusable-check-autogen.yml
+            .github/workflows/reusable-clang-tidy.yml
+            .github/workflows/reusable-package.yml
+            .github/workflows/reusable-rust.yml
+            .github/workflows/reusable-strategy-matrix.yml
+            .github/workflows/reusable-test.yml
+            .github/workflows/reusable-upload-recipe.yml
+            .clang-tidy
+            .codecov.yml
+            bin/check-nix-store-refs.sh
+            bin/check-tools.sh
+            bin/default-loader-path.sh
+            cfg/**
+            cmake/**
+            conan/**
+            crates/**
+            external/**
+            include/**
+            src/**
+            tests/**
+            CMakeLists.txt
+            conanfile.py
+            conan.lock
+            flake.lock
+            flake.nix
+            nix/**
+            LICENSE.md
+            package/**
+            README.md
+
+      - name: Check whether to run
+        # This step determines whether the rest of the workflow should
+        # run. The rest of the workflow will run if this job runs AND at
+        # least one of:
+        # * Any of the files checked in the `changes` step were modified
+        # * The PR is NOT a draft and is labeled "Ready to merge"
+        # * The PR is labeled "Full CI build" (draft or not)
+        # * The workflow is running from the merge queue
+        id: go
+        env:
+          FILES: ${{ steps.changes.outputs.any_changed }}
+          DRAFT: ${{ github.event.pull_request.draft }}
+          READY: ${{ contains(github.event.pull_request.labels.*.name, 'Ready to merge') }}
+          FULL: ${{ contains(github.event.pull_request.labels.*.name, 'Full CI build') }}
+          MERGE: ${{ github.event_name == 'merge_group' }}
+        run: |
+          echo "go=${{ (env.DRAFT != 'true' && env.READY == 'true') || env.FULL == 'true' || env.FILES == 'true' || env.MERGE == 'true' }}" >>"${GITHUB_OUTPUT}"
+          cat "${GITHUB_OUTPUT}"
+    outputs:
+      go: ${{ steps.go.outputs.go == 'true' }}
+
+  check-autogen:
+    needs: should-run
+    if: ${{ needs.should-run.outputs.go == 'true' }}
+    uses: ./.github/workflows/reusable-check-autogen.yml
+
+  check-levelization:
+    needs: should-run
+    if: ${{ needs.should-run.outputs.go == 'true' }}
+    uses: ./.github/workflows/reusable-check-levelization.yml
+
+  check-otel-naming:
+    needs: should-run
+    if: ${{ needs.should-run.outputs.go == 'true' }}
+    uses: ./.github/workflows/reusable-check-otel-naming.yml
+
+  check-rename:
+    needs: should-run
+    if: ${{ needs.should-run.outputs.go == 'true' }}
+    uses: ./.github/workflows/reusable-check-rename.yml
+
+  clang-tidy:
+    needs: should-run
+    if: ${{ needs.should-run.outputs.go == 'true' }}
+    uses: ./.github/workflows/reusable-clang-tidy.yml
+    permissions:
+      issues: write
+      contents: read
+    with:
+      create_issue_on_failure: false
+
+  build-test:
+    needs: should-run
+    if: ${{ needs.should-run.outputs.go == 'true' }}
+    uses: ./.github/workflows/reusable-build-test.yml
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [linux, macos, windows]
+    with:
+      # Enable ccache only for events targeting the XRPLF repository, since
+      # other accounts will not have access to our remote cache storage.
+      ccache_enabled: ${{ github.repository_owner == 'XRPLF' }}
+      os: ${{ matrix.os }}
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+  rust:
+    needs: should-run
+    if: ${{ needs.should-run.outputs.go == 'true' }}
+    uses: ./.github/workflows/reusable-rust.yml
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+  package:
+    needs: [should-run, build-test]
+    # Packaging consumes the debian/rhel release binaries, which are only built
+    # by the full matrix. Skip it for pull requests that ran only the minimal
+    # matrix (i.e. not yet labeled "Ready to merge" or "Full CI build").
+    if: ${{ needs.should-run.outputs.go == 'true' && (github.event_name != 'pull_request' || contains(github.event.pull_request.labels.*.name, 'Ready to merge') || contains(github.event.pull_request.labels.*.name, 'Full CI build')) }}
+    uses: ./.github/workflows/reusable-package.yml
+
+  upload-recipe:
+    needs:
+      - should-run
+      - build-test
+    # Only run when committing to a PR that targets a release branch.
+    if: ${{ github.repository == 'XRPLF/rippled' && needs.should-run.outputs.go == 'true' && github.event_name == 'pull_request' && startsWith(github.event.pull_request.base.ref, 'release') }}
+    uses: ./.github/workflows/reusable-upload-recipe.yml
+    secrets:
+      remote_username: ${{ secrets.NEXUS_REMOTE_USERNAME }}
+      remote_password: ${{ secrets.NEXUS_REMOTE_PASSWORD }}
+
+  notify-clio:
+    needs: upload-recipe
+    runs-on: ubuntu-latest
+    steps:
+      # Notify the Clio repository about the newly proposed release version, so
+      # it can be checked for compatibility before the release is actually made.
+      - name: Notify Clio
+        env:
+          GH_TOKEN: ${{ secrets.CLIO_NOTIFY_TOKEN }}
+          PR_URL: ${{ github.event.pull_request.html_url }}
+        run: |
+          gh api --method POST -H "Accept: application/vnd.github+json" -H "X-GitHub-Api-Version: 2022-11-28" \
+              /repos/xrplf/clio/dispatches -f "event_type=check_libxrpl" \
+              -F "client_payload[ref]=${{ needs.upload-recipe.outputs.recipe_ref }}" \
+              -F "client_payload[pr_url]=${PR_URL}"
+
+  passed:
+    if: failure() || cancelled()
+    needs:
+      - check-autogen
+      - check-levelization
+      - check-otel-naming
+      - check-rename
+      - clang-tidy
+      - build-test
+      - rust
+      - package
+      - upload-recipe
+      - notify-clio
+    runs-on: ubuntu-latest
+    steps:
+      - name: Fail
+        run: exit 1
--- a/.github/workflows/on-tag.yml
+++ b/.github/workflows/on-tag.yml
@@ -0,0 +1,52 @@
+# When a versioned tag is pushed, this workflow:
+#
+#   - uploads the libxrpl recipe to the Conan remote
+#   - builds and tests the release binaries
+#   - builds the DEB and RPM packages
+#   - publishes those packages to the XRPLF package repositories
+name: Tag
+
+on:
+  push:
+    tags:
+      - "[0-9]+.[0-9]+.[0-9]*"
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  upload-recipe:
+    if: ${{ github.repository == 'XRPLF/rippled' }}
+    uses: ./.github/workflows/reusable-upload-recipe.yml
+    secrets:
+      remote_username: ${{ secrets.NEXUS_REMOTE_USERNAME }}
+      remote_password: ${{ secrets.NEXUS_REMOTE_PASSWORD }}
+
+  build-test:
+    if: ${{ github.repository_owner == 'XRPLF' }}
+    uses: ./.github/workflows/reusable-build-test.yml
+    strategy:
+      fail-fast: true
+      matrix:
+        os: [linux]
+    with:
+      ccache_enabled: false
+      os: ${{ matrix.os }}
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+  package:
+    if: ${{ github.repository_owner == 'XRPLF' }}
+    needs: build-test
+    uses: ./.github/workflows/reusable-package.yml
+    with:
+      publish: true
+    secrets:
+      remote_username: ${{ secrets.NEXUS_REMOTE_USERNAME }}
+      remote_password: ${{ secrets.NEXUS_REMOTE_PASSWORD }}
+      signing_key: ${{ secrets.NEXUS_PACKAGES_PRIVATE_KEY }}
--- a/.github/workflows/on-trigger.yml
+++ b/.github/workflows/on-trigger.yml
@@ -0,0 +1,130 @@
+# This workflow runs all workflows to build and test the code on various Linux
+# flavors, as well as on MacOS and Windows, on a scheduled basis, on merge into
+# the 'develop' or 'release*' branches, or when requested manually. Upon pushes
+# to the develop branch it also uploads the libxrpl recipe to the Conan remote.
+name: Trigger
+
+on:
+  push:
+    branches:
+      - "develop"
+      - "release*"
+    paths:
+      # These paths are unique to `on-trigger.yml`.
+      - ".github/workflows/on-trigger.yml"
+
+      # Keep the paths below in sync with those in `on-pr.yml`.
+      - ".github/actions/build-deps/**"
+      - ".github/actions/release-info/**"
+      - ".github/actions/setup-conan/**"
+      - ".github/actions/setup-nix-env/**"
+      - ".github/scripts/strategy-matrix/**"
+      - ".github/workflows/reusable-build-test-config.yml"
+      - ".github/workflows/reusable-build-test.yml"
+      - ".github/workflows/reusable-check-autogen.yml"
+      - ".github/workflows/reusable-clang-tidy.yml"
+      - ".github/workflows/reusable-package.yml"
+      - ".github/workflows/reusable-rust.yml"
+      - ".github/workflows/reusable-strategy-matrix.yml"
+      - ".github/workflows/reusable-test.yml"
+      - ".github/workflows/reusable-upload-recipe.yml"
+      - ".clang-tidy"
+      - ".codecov.yml"
+      - "bin/check-nix-store-refs.sh"
+      - "bin/check-tools.sh"
+      - "bin/default-loader-path.sh"
+      - "cfg/**"
+      - "cmake/**"
+      - "conan/**"
+      - "crates/**"
+      - "external/**"
+      - "include/**"
+      - "src/**"
+      - "tests/**"
+      - "CMakeLists.txt"
+      - "conanfile.py"
+      - "conan.lock"
+      - "flake.lock"
+      - "flake.nix"
+      - "nix/**"
+      - "LICENSE.md"
+      - "package/**"
+      - "README.md"
+
+  # Run at 06:32 UTC on every day of the week from Monday through Friday. This
+  # will force all dependencies to be rebuilt, which is useful to verify that
+  # all dependencies can be built successfully. Only the dependencies that
+  # are actually missing from the remote will be uploaded.
+  schedule:
+    - cron: "32 6 * * 1-5"
+
+  # Run when manually triggered via the GitHub UI or API.
+  workflow_dispatch:
+
+concurrency:
+  # When a PR is merged into the develop branch it will be assigned a unique
+  # group identifier, so execution will continue even if another PR is merged
+  # while it is still running. In all other cases the group identifier is shared
+  # per branch, so that any in-progress runs are cancelled when a new commit is
+  # pushed.
+  group: ${{ github.workflow }}-${{ github.event_name == 'push' && github.ref == 'refs/heads/develop' && github.sha || github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  check-autogen:
+    uses: ./.github/workflows/reusable-check-autogen.yml
+
+  clang-tidy:
+    uses: ./.github/workflows/reusable-clang-tidy.yml
+    permissions:
+      issues: write
+      contents: read
+    with:
+      create_issue_on_failure: ${{ github.event_name == 'schedule' }}
+
+  build-test:
+    uses: ./.github/workflows/reusable-build-test.yml
+    strategy:
+      fail-fast: ${{ github.event_name == 'merge_group' }}
+      matrix:
+        os: [linux, macos, windows]
+    with:
+      # Enable ccache only for events targeting the XRPLF repository, since
+      # other accounts will not have access to our remote cache storage.
+      # However, we do not enable ccache for events targeting a release branch,
+      # to protect against the rare case that the output produced by ccache is
+      # not identical to a regular compilation.
+      ccache_enabled: ${{ github.repository_owner == 'XRPLF' && !startsWith(github.ref, 'refs/heads/release') }}
+      os: ${{ matrix.os }}
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+  rust:
+    uses: ./.github/workflows/reusable-rust.yml
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+  upload-recipe:
+    needs: build-test
+    # Only run when pushing to the develop branch.
+    if: ${{ github.repository == 'XRPLF/rippled' && github.event_name == 'push' && github.ref == 'refs/heads/develop' }}
+    uses: ./.github/workflows/reusable-upload-recipe.yml
+    secrets:
+      remote_username: ${{ secrets.NEXUS_REMOTE_USERNAME }}
+      remote_password: ${{ secrets.NEXUS_REMOTE_PASSWORD }}
+
+  package:
+    needs: build-test
+    uses: ./.github/workflows/reusable-package.yml
+    with:
+      # Packages are built on every trigger; only develop pushes in XRPLF/rippled
+      # publish them, matching upload-recipe above.
+      publish: ${{ github.repository == 'XRPLF/rippled' && github.event_name == 'push' && github.ref == 'refs/heads/develop' }}
+    secrets:
+      remote_username: ${{ secrets.NEXUS_REMOTE_USERNAME }}
+      remote_password: ${{ secrets.NEXUS_REMOTE_PASSWORD }}
+      signing_key: ${{ secrets.NEXUS_PACKAGES_PRIVATE_KEY }}
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -0,0 +1,20 @@
+name: Run pre-commit hooks
+
+on:
+  merge_group:
+    types:
+      - checks_requested
+  pull_request:
+  push:
+    branches:
+      - "develop"
+      - "release*"
+  workflow_dispatch:
+
+jobs:
+  # Call the workflow in the XRPLF/actions repo that runs the pre-commit hooks.
+  run-hooks:
+    uses: XRPLF/actions/.github/workflows/pre-commit.yml@3ba08d6ddf114092891d48491fc2e26c3ba15552
+    with:
+      runs_on: ubuntu-latest
+      container: '{ "image": "ghcr.io/xrplf/xrpld/pre-commit:sha-f56b79f" }'
--- a/.github/workflows/publish-docs.yml
+++ b/.github/workflows/publish-docs.yml
@@ -0,0 +1,94 @@
+# This workflow builds the documentation for the repository, and publishes it to
+# GitHub Pages when changes are merged into the default branch.
+name: Build and publish documentation
+
+on:
+  push:
+    branches:
+      - "develop"
+    paths:
+      - ".github/workflows/publish-docs.yml"
+      - "*.md"
+      - "**/*.md"
+      - "docs/**"
+      - "include/**"
+      - "src/libxrpl/**"
+      - "src/xrpld/**"
+  pull_request:
+    paths:
+      - ".github/workflows/publish-docs.yml"
+      - "*.md"
+      - "**/*.md"
+      - "docs/**"
+      - "include/**"
+      - "src/libxrpl/**"
+      - "src/xrpld/**"
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+env:
+  BUILD_DIR: build
+  # ubuntu-latest has only 2 CPUs for private repositories
+  # https://docs.github.com/en/actions/reference/runners/github-hosted-runners#standard-github-hosted-runners-for--private-repositories
+  NPROC_SUBTRACT: ${{ github.event.repository.visibility == 'public' && '2' || '1' }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container: ghcr.io/xrplf/xrpld/nix-ubuntu:sha-a0074f8
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Prepare runner
+        uses: XRPLF/actions/prepare-runner@51af40f99ea91a08c3528ddf16d98132dcc7e63c
+        with:
+          enable_ccache: false
+
+      - name: Get number of processors
+        uses: XRPLF/actions/get-nproc@cf0433aa74563aead044a1e395610c96d65a37cf
+        id: nproc
+        with:
+          subtract: ${{ env.NPROC_SUBTRACT }}
+
+      - name: Print build environment
+        uses: XRPLF/actions/print-build-env@59dec886e4afb05a1724443af08baccbc045b574
+
+      - name: Check Doxygen version
+        run: doxygen --version
+
+      - name: Build documentation
+        env:
+          BUILD_NPROC: ${{ steps.nproc.outputs.nproc }}
+        run: |
+          mkdir -p "${BUILD_DIR}"
+          cd "${BUILD_DIR}"
+          cmake -Donly_docs=ON ..
+          cmake --build . --target docs --parallel ${BUILD_NPROC}
+
+      - name: Create documentation artifact
+        if: ${{ github.event.repository.visibility == 'public' && github.event_name == 'push' }}
+        uses: actions/upload-pages-artifact@fc324d3547104276b827a68afc52ff2a11cc49c9 # v5.0.0
+        with:
+          path: ${{ env.BUILD_DIR }}/docs/html
+
+  deploy:
+    if: ${{ github.repository == 'XRPLF/rippled' && github.event_name == 'push' }}
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deploy.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deploy
+        uses: actions/deploy-pages@cd2ce8fcbc39b97be8ca5fce6e763baed58fa128 # v5.0.0
--- a/.github/workflows/reusable-build-test-config.yml
+++ b/.github/workflows/reusable-build-test-config.yml
@@ -0,0 +1,452 @@
+name: Build and test configuration
+
+on:
+  workflow_call:
+    inputs:
+      benchmark:
+        description: "Whether to smoke-run the benchmarks after testing."
+        required: false
+        type: boolean
+        default: false
+
+      build_only:
+        description: 'Whether to only build or to build and test the code ("true", "false").'
+        required: true
+        type: boolean
+
+      build_type:
+        description: 'The build type to use ("Debug", "Release").'
+        required: true
+        type: string
+
+      ccache_enabled:
+        description: "Whether to enable ccache."
+        required: false
+        type: boolean
+        default: false
+
+      cmake_args:
+        description: "Additional arguments to pass to CMake."
+        required: false
+        type: string
+        default: ""
+
+      cmake_target:
+        description: "The CMake target to build."
+        required: true
+        type: string
+
+      runs_on:
+        description: Runner to run the job on as a JSON string
+        required: true
+        type: string
+
+      image:
+        description: "The image to run in (leave empty to run natively)"
+        required: true
+        type: string
+
+      config_name:
+        description: "The configuration string (used for naming artifacts and such)."
+        required: true
+        type: string
+
+      nproc_subtract:
+        description: "The number of processors to subtract when calculating parallelism."
+        required: false
+        type: number
+        default: 2
+
+      sanitizers:
+        description: "The sanitizers to enable."
+        required: false
+        type: string
+        default: ""
+
+      compiler:
+        description: 'The compiler to use ("gcc" or "clang"). Leave empty for macOS/Windows (uses system default).'
+        required: false
+        type: string
+        default: ""
+
+      toolchain:
+        description: 'Where the toolchain comes from ("nix" to build the flake CI environment on the runner, empty for the system one). macOS only: Linux always builds in a Nix image, and Nix has no Windows support.'
+        required: false
+        type: string
+        default: ""
+
+    secrets:
+      CODECOV_TOKEN:
+        description: "The Codecov token to use for uploading coverage reports."
+        required: true
+
+defaults:
+  run:
+    shell: bash
+
+env:
+  # Conan installs the generators in the build/generators directory, see the
+  # layout() method in conanfile.py. We then run CMake from the build directory.
+  BUILD_DIR: build
+
+jobs:
+  build-and-test:
+    name: ${{ inputs.config_name }}
+    runs-on: ${{ fromJSON(inputs.runs_on) }}
+    container: ${{ inputs.image != '' && inputs.image || null }}
+    timeout-minutes: ${{ inputs.sanitizers != '' && 360 || 180 }}
+    env:
+      # Use a namespace to keep the objects separate for each configuration.
+      CCACHE_NAMESPACE: ${{ inputs.config_name }}
+      # Ccache supports both Redis and HTTP endpoints.
+      # * For Redis, use the following format: redis://ip:port, see
+      #   https://github.com/ccache/ccache/wiki/Redis-storage. Note that TLS is
+      #   not directly supported by ccache, and requires use of a proxy.
+      # * For HTTP use the following format: http://ip:port/cache when using
+      #   nginx as backend or http://ip:port|layout=bazel when using Bazel
+      #   Remote Cache, see https://github.com/ccache/ccache/wiki/HTTP-storage.
+      #   Note that HTTPS is not directly supported by ccache.
+      CCACHE_REMOTE_ONLY: true
+      CCACHE_REMOTE_STORAGE: http://cache.dev.ripplex.io:8080|layout=bazel
+      # Ignore the creation and modification timestamps on files, since the
+      # header files are copied into separate directories by CMake, which will
+      # otherwise result in cache misses.
+      CCACHE_SLOPPINESS: include_file_ctime,include_file_mtime
+      # Determine if coverage, voidstar and validator-keys should be enabled.
+      COVERAGE_ENABLED: ${{ contains(inputs.cmake_args, '-Dcoverage=ON') }}
+      VOIDSTAR_ENABLED: ${{ contains(inputs.cmake_args, '-Dvoidstar=ON') }}
+      VALIDATOR_KEYS_ENABLED: ${{ contains(inputs.cmake_args, '-Dvalidator_keys=ON') }}
+      SANITIZERS_ENABLED: ${{ inputs.sanitizers != '' }}
+      # The binaries reusable-package.yml consumes. A private repository skips
+      # them except on a tag push, which is what produces its release packages.
+      PACKAGING_ARTIFACTS_ENABLED: ${{ github.event.repository.visibility == 'public' || startsWith(github.ref, 'refs/tags/') }}
+    steps:
+      - name: Cleanup workspace (macOS and Windows)
+        if: ${{ runner.os == 'macOS' || runner.os == 'Windows' }}
+        uses: XRPLF/actions/cleanup-workspace@c7d9ce5ebb03c752a354889ecd870cadfc2b1cd4
+
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Prepare runner
+        uses: XRPLF/actions/prepare-runner@51af40f99ea91a08c3528ddf16d98132dcc7e63c
+        with:
+          enable_ccache: ${{ inputs.ccache_enabled }}
+
+      # Before any step that uses a build tool, composite actions included.
+      - name: Setup Nix environment
+        if: ${{ inputs.toolchain == 'nix' }}
+        uses: ./.github/actions/setup-nix-env
+
+      - name: Set ccache log file
+        if: ${{ inputs.ccache_enabled && runner.debug == '1' }}
+        run: echo "CCACHE_LOGFILE=${{ runner.temp }}/ccache.log" >>"${GITHUB_ENV}"
+
+      - name: Check tools
+        env:
+          CHECK_TOOLS_SKIP_CLONE: "1"
+        run: ./bin/check-tools.sh || true
+
+      - name: Print build environment
+        uses: XRPLF/actions/print-build-env@59dec886e4afb05a1724443af08baccbc045b574
+
+      - name: Get number of processors
+        uses: XRPLF/actions/get-nproc@cf0433aa74563aead044a1e395610c96d65a37cf
+        id: nproc
+        with:
+          subtract: ${{ inputs.nproc_subtract }}
+
+      - name: Set compiler environment (Linux)
+        if: ${{ runner.os == 'Linux' }}
+        uses: ./.github/actions/set-compiler-env
+        with:
+          compiler: ${{ inputs.compiler }}
+
+      - name: Use cargo artifacts cache
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          cache-directories: ${{ env.BUILD_DIR }}/corrosion
+          key: ${{ inputs.config_name }}
+          save-if: ${{ github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/heads/release') }}
+          # two workspaces here because build artifacts are located in 2 places:
+          # - crates/target when cargo is called directly
+          # - build/cargo when cargo is called by cmake
+          workspaces: |
+            crates
+            crates -> ${{ runner.os == 'Windows' && format('../{0}/x64/{1}/cargo', env.BUILD_DIR, inputs.build_type) || format('../{0}/cargo', env.BUILD_DIR) }}
+
+      # `setup-nix-env` already did this for the Nix toolchain.
+      - name: Setup Conan
+        if: ${{ inputs.toolchain != 'nix' }}
+        env:
+          SANITIZERS: ${{ inputs.sanitizers }}
+        uses: ./.github/actions/setup-conan
+
+      - name: Build dependencies
+        uses: ./.github/actions/build-deps
+        with:
+          build_nproc: ${{ steps.nproc.outputs.nproc }}
+          build_type: ${{ inputs.build_type }}
+          # Set the verbosity to "quiet" for Windows to avoid an excessive
+          # amount of logs. For other OSes, the "verbose" logs are more useful.
+          log_verbosity: ${{ runner.os == 'Windows' && 'quiet' || 'verbose' }}
+          sanitizers: ${{ inputs.sanitizers }}
+
+      - name: Configure CMake
+        working-directory: ${{ env.BUILD_DIR }}
+        env:
+          BUILD_TYPE: ${{ inputs.build_type }}
+          CMAKE_ARGS: ${{ inputs.cmake_args }}
+        run: |
+          cmake \
+              -G '${{ runner.os == 'Windows' && 'Visual Studio 18 2026' || 'Ninja' }}' \
+              -DCMAKE_TOOLCHAIN_FILE:FILEPATH=build/generators/conan_toolchain.cmake \
+              -DCMAKE_BUILD_TYPE="${BUILD_TYPE}" \
+              ${CMAKE_ARGS} \
+              ..
+
+      # Export the sanitizer options before any instrumented binary runs. The
+      # build step below invokes instrumented dependency tools (protoc, grpc),
+      # so setting UBSAN_OPTIONS here lets the UBSan suppression list silence
+      # their diagnostics too, not just at test time.
+      # GITHUB_WORKSPACE (not the github.workspace context) is used so the path
+      # resolves correctly inside the container job.
+      - name: Set sanitizer options
+        if: ${{ !inputs.build_only && env.SANITIZERS_ENABLED == 'true' }}
+        env:
+          CONFIG_NAME: ${{ inputs.config_name }}
+        run: |
+          SUPP="${GITHUB_WORKSPACE}/sanitizers/suppressions"
+          ASAN_OPTS="include=${SUPP}/runtime-asan-options.txt:suppressions=${SUPP}/asan.supp"
+          if [[ "${CONFIG_NAME}" == *gcc* ]]; then
+              ASAN_OPTS="${ASAN_OPTS}:alloc_dealloc_mismatch=0"
+          fi
+          echo "ASAN_OPTIONS=${ASAN_OPTS}" >>${GITHUB_ENV}
+          echo "TSAN_OPTIONS=include=${SUPP}/runtime-tsan-options.txt:suppressions=${SUPP}/tsan.supp" >>${GITHUB_ENV}
+          echo "UBSAN_OPTIONS=include=${SUPP}/runtime-ubsan-options.txt:suppressions=${SUPP}/ubsan.supp" >>${GITHUB_ENV}
+          echo "LSAN_OPTIONS=include=${SUPP}/runtime-lsan-options.txt:suppressions=${SUPP}/lsan.supp" >>${GITHUB_ENV}
+
+      - name: Build the binary
+        working-directory: ${{ env.BUILD_DIR }}
+        env:
+          BUILD_NPROC: ${{ steps.nproc.outputs.nproc }}
+          BUILD_TYPE: ${{ inputs.build_type }}
+          CMAKE_TARGET: ${{ inputs.cmake_target }}
+        run: |
+          set -o pipefail
+          cmake \
+              --build . \
+              --config "${BUILD_TYPE}" \
+              --parallel "${BUILD_NPROC}" \
+              --target "${CMAKE_TARGET}" \
+              2>&1 | tee "${GITHUB_WORKSPACE}/build.log"
+
+      # Nothing may reference the store, so whole trees are checked - the Conan
+      # cache included, since what it holds is what gets uploaded and reused.
+      - name: Check the build output for Nix store references (Nix toolchain)
+        if: ${{ inputs.toolchain == 'nix' }}
+        run: ./bin/check-nix-store-refs.sh "${BUILD_DIR}"
+
+      - name: Check the Conan cache for Nix store references (Nix toolchain)
+        if: ${{ inputs.toolchain == 'nix' }}
+        run: ./bin/check-nix-store-refs.sh "${CONAN_HOME}"
+
+      # Only what PatchNixBinary.cmake retargets: the toolchain in the Linux
+      # images always references the store. Same condition it uses.
+      - name: Check for Nix store references (Linux)
+        if: ${{ runner.os == 'Linux' && env.SANITIZERS_ENABLED == 'false' }}
+        run: |
+          ./bin/check-nix-store-refs.sh "${BUILD_DIR}/xrpld"
+          ./bin/check-nix-store-refs.sh "${BUILD_DIR}/xrpl_tests"
+
+      - name: Show ccache statistics
+        if: ${{ inputs.ccache_enabled }}
+        run: |
+          ccache --show-stats -vv
+          if [ '${{ runner.debug }}' = '1' ]; then
+              cat "${CCACHE_LOGFILE}"
+              curl ${CCACHE_REMOTE_STORAGE%|*}/status || true
+          fi
+
+      - name: Upload the binary (Linux)
+        if: ${{ env.PACKAGING_ARTIFACTS_ENABLED == 'true' && runner.os == 'Linux' }}
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: xrpld-${{ inputs.config_name }}
+          path: ${{ env.BUILD_DIR }}/xrpld
+          retention-days: 3
+          if-no-files-found: error
+
+      - name: Run the validator-keys tests
+        if: ${{ env.VALIDATOR_KEYS_ENABLED == 'true' }}
+        working-directory: ${{ env.BUILD_DIR }}
+        run: ./validator-keys --unittest
+
+      - name: Upload the validator-keys binary
+        if: ${{ env.PACKAGING_ARTIFACTS_ENABLED == 'true' && env.VALIDATOR_KEYS_ENABLED == 'true' }}
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: validator-keys-${{ inputs.config_name }}
+          path: |
+            ${{ env.BUILD_DIR }}/validator-keys
+            ${{ env.BUILD_DIR }}/validator-keys-LICENSE
+          retention-days: 3
+          if-no-files-found: error
+
+      - name: Upload the test binary (Linux)
+        if: ${{ github.event.repository.visibility == 'public' && runner.os == 'Linux' }}
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: xrpl_tests-${{ inputs.config_name }}
+          path: ${{ env.BUILD_DIR }}/xrpl_tests
+          retention-days: 3
+          if-no-files-found: error
+
+      - name: Export server definitions
+        if: ${{ runner.os != 'Windows' && !inputs.build_only && env.VOIDSTAR_ENABLED != 'true' }}
+        working-directory: ${{ env.BUILD_DIR }}
+        run: |
+          set -o pipefail
+          ./xrpld --definitions | python3 -m json.tool >server_definitions.json
+
+      - name: Upload server definitions
+        if: ${{ github.event.repository.visibility == 'public' && inputs.config_name == 'ubuntu-gcc-debug-amd64-coverage' }}
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: server-definitions
+          path: ${{ env.BUILD_DIR }}/server_definitions.json
+          retention-days: 3
+          if-no-files-found: error
+
+      - name: Check linking (Linux)
+        if: ${{ runner.os == 'Linux' && env.SANITIZERS_ENABLED == 'false' }}
+        working-directory: ${{ env.BUILD_DIR }}
+        run: |
+          ldd ./xrpld
+          if [ "$(ldd ./xrpld | grep -E '(libstdc\+\+|libgcc)' | wc -l)" -eq 0 ]; then
+              echo 'The binary is statically linked.'
+          else
+              echo 'The binary is dynamically linked.'
+              exit 1
+          fi
+
+      - name: Verify presence of instrumentation (Linux)
+        if: ${{ runner.os == 'Linux' && env.VOIDSTAR_ENABLED == 'true' }}
+        working-directory: ${{ env.BUILD_DIR }}
+        run: |
+          ./xrpld --version | grep libvoidstar
+
+      - name: Run the separate tests
+        if: ${{ !inputs.build_only }}
+        working-directory: ${{ runner.os == 'Windows' && format('{0}/{1}', env.BUILD_DIR, inputs.build_type) || env.BUILD_DIR }}
+        run: ./xrpl_tests
+
+      - name: Run the embedded tests
+        if: ${{ !inputs.build_only }}
+        working-directory: ${{ runner.os == 'Windows' && format('{0}/{1}', env.BUILD_DIR, inputs.build_type) || env.BUILD_DIR }}
+        env:
+          BUILD_NPROC: ${{ steps.nproc.outputs.nproc }}
+        run: |
+          set -o pipefail
+          # Coverage builds are slower due to instrumentation; use fewer parallel jobs to avoid flakiness
+          [ "$COVERAGE_ENABLED" = "true" ] && BUILD_NPROC=$((BUILD_NPROC - 2))
+
+          # The resolver/preload workaround is only correct for the ASan build:
+          # a regular build doesn't hit the __dn_expand interceptor bug, and must
+          # NOT have libasan injected. So only preload when xrpld is ASan-built.
+          #
+          # libresolv hosts getaddrinfo's resolver helpers (dn_expand, res_*). Under ASan
+          # these are intercepted via dlsym(RTLD_NEXT, ...), which yields a NULL pointer
+          # and crashes DNS resolution if libresolv isn't loaded. Linking it guarantees
+          # the symbols are present; it's a harmless no-op on glibc >= 2.34 (merged into
+          # libc) and is what the compiler driver already does for sanitizer builds.
+          #   https://github.com/llvm/llvm-project/issues/59007
+          #   https://github.com/google/sanitizers/issues/1592
+          if ldd ./xrpld | grep -q libasan; then
+              PRELOAD="$(gcc -print-file-name=libasan.so):/usr/lib/x86_64-linux-gnu/libresolv.so.2"
+          else
+              PRELOAD=""
+          fi
+
+          LD_PRELOAD="$PRELOAD" ./xrpld --unittest --unittest-jobs "${BUILD_NPROC}" 2>&1 | tee "${GITHUB_WORKSPACE}/unittest.log"
+
+      - name: Run Rust tests
+        if: ${{ !inputs.build_only }}
+        working-directory: crates
+        run: cargo nextest run --workspace --all-features --locked --no-tests=warn
+
+      # Smoke-run every benchmark module with a single repetition to confirm the
+      # benchmarks still build and execute. This is a correctness check, not a
+      # performance measurement, so there is nothing to gain from repeating it
+      # across configurations: it is opted into by a single config in the
+      # strategy matrix (see the 'benchmark' flag in the JSON files), which
+      # keeps it off instrumented builds (sanitizers/coverage/voidstar), where
+      # it would be slow and meaningless, off Debug builds, where it is much
+      # slower, and off Windows, where the `install` target does not build them.
+      - name: Run the benchmarks
+        if: ${{ inputs.benchmark }}
+        working-directory: ${{ env.BUILD_DIR }}
+        run: |
+          rc=0
+          while IFS= read -r bench; do
+              echo "::group::${bench}"
+              "./${bench}" --benchmark_repetitions=1 || rc=1
+              echo "::endgroup::"
+          done < <(find src/benchmarks -type f -perm -u+x -name 'xrpl.bench.*')
+          exit "${rc}"
+
+      - name: Show build/test failure summary
+        if: ${{ failure() }}
+        run: |
+          cd "${GITHUB_WORKSPACE}"
+
+          if [ -f unittest.log ]; then
+              if ! grep -E "failed" unittest.log | grep -vE "^I[0-9]|^[0-9]+> (ERR:|FTL:)"; then
+                  echo "unittest.log present but no failure lines found."
+              fi
+          elif [ -f build.log ]; then
+              # GCC/Clang emit "error:" (covers "fatal error:"); MSVC emits
+              # "error C####:", "error LNK####:", and "fatal error LNK####:".
+              # -A6 prints the lines that follow each match (source line, caret,
+              # notes, and the "N errors generated" tally) to capture the whole
+              # diagnostic block.
+              if ! grep -E -A6 "error:|error C[0-9]{4}|error LNK[0-9]{4}|fatal error" build.log; then
+                  echo "build.log present but no compile errors found."
+              fi
+          else
+              echo "unittest.log/build.log not found; something went wrong."
+              exit 1
+          fi
+      - name: Debug failure (Linux)
+        if: ${{ failure() && runner.os == 'Linux' && !inputs.build_only }}
+        run: |
+          echo "IPv4 local port range:"
+          cat /proc/sys/net/ipv4/ip_local_port_range
+          echo "Netstat:"
+          netstat -an
+
+      - name: Prepare coverage report
+        if: ${{ !inputs.build_only && env.COVERAGE_ENABLED == 'true' }}
+        working-directory: ${{ env.BUILD_DIR }}
+        env:
+          BUILD_NPROC: ${{ steps.nproc.outputs.nproc }}
+          BUILD_TYPE: ${{ inputs.build_type }}
+        run: |
+          cmake \
+              --build . \
+              --config "${BUILD_TYPE}" \
+              --parallel "${BUILD_NPROC}" \
+              --target coverage
+
+      - name: Upload coverage report
+        if: ${{ github.repository_owner == 'XRPLF' && !inputs.build_only && env.COVERAGE_ENABLED == 'true' }}
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
+        with:
+          disable_search: true
+          disable_telem: true
+          fail_ci_if_error: true
+          files: ${{ env.BUILD_DIR }}/coverage.xml
+          flags: cpp
+          plugins: noop
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true
--- a/.github/workflows/reusable-build-test.yml
+++ b/.github/workflows/reusable-build-test.yml
@@ -0,0 +1,56 @@
+# This workflow builds and tests the binary for various configurations.
+name: Build and test
+
+# This workflow can only be triggered by other workflows. Note that the
+# workflow_call event does not support the 'choice' input type, see
+# https://docs.github.com/en/actions/reference/workflows-and-actions/workflow-syntax#onworkflow_callinputsinput_idtype,
+# so we use 'string' instead.
+on:
+  workflow_call:
+    inputs:
+      ccache_enabled:
+        description: "Whether to enable ccache."
+        required: false
+        type: boolean
+        default: false
+
+      os:
+        description: 'The operating system to use for the build ("linux", "macos", "windows").'
+        required: true
+        type: string
+
+    secrets:
+      CODECOV_TOKEN:
+        description: "The Codecov token to use for uploading coverage reports."
+        required: true
+
+jobs:
+  # Generate the strategy matrix to be used by the following job.
+  generate-matrix:
+    uses: ./.github/workflows/reusable-strategy-matrix.yml
+    with:
+      os: ${{ inputs.os }}
+
+  # Build and test the binary for each configuration.
+  build-test-config:
+    needs:
+      - generate-matrix
+    uses: ./.github/workflows/reusable-build-test-config.yml
+    strategy:
+      fail-fast: ${{ github.event_name == 'merge_group' }}
+      matrix: ${{ fromJson(needs.generate-matrix.outputs.matrix) }}
+    with:
+      benchmark: ${{ matrix.benchmark }}
+      build_only: ${{ matrix.build_only }}
+      build_type: ${{ matrix.build_type }}
+      ccache_enabled: ${{ inputs.ccache_enabled }}
+      cmake_args: ${{ matrix.cmake_args }}
+      cmake_target: ${{ matrix.cmake_target }}
+      runs_on: ${{ toJSON(matrix.architecture.runner) }}
+      image: ${{ matrix.image || '' }}
+      config_name: ${{ matrix.config_name }}
+      sanitizers: ${{ matrix.sanitizers }}
+      compiler: ${{ matrix.compiler || '' }}
+      toolchain: ${{ matrix.toolchain || '' }}
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
--- a/.github/workflows/reusable-check-autogen.yml
+++ b/.github/workflows/reusable-check-autogen.yml
@@ -0,0 +1,76 @@
+# This workflow checks that the generated protocol wrapper classes are
+# up-to-date with the macro files and generator scripts they are produced from,
+# see more info in include/xrpl/protocol_autogen/README.md.
+name: Check autogen
+
+# This workflow can only be triggered by other workflows.
+on: workflow_call
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-autogen
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+env:
+  BUILD_DIR: build/codegen
+
+jobs:
+  autogen:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Set up Python
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: "3.13"
+
+      # Code generation is pure Python, so the standalone project below offers
+      # the same targets as the main build without needing its dependencies or
+      # a compiler, which keeps this job down to a few seconds.
+      - name: Configure CMake
+        run: cmake -S cmake/codegen -B "${BUILD_DIR}"
+
+      - name: Install code generation dependencies
+        run: cmake --build "${BUILD_DIR}" --target setup_code_gen
+
+      - name: Generate code
+        run: cmake --build "${BUILD_DIR}" --target code_gen
+
+      - name: Check for differences
+        env:
+          MESSAGE: |
+
+            The generated protocol wrapper classes are out of date.
+
+            This typically happens when the macro files or generator scripts
+            have changed but the generated files were not regenerated.
+
+            Run the following from the repository root, then commit and push
+            the regenerated files. This needs neither the dependencies nor a
+            compiler. See include/xrpl/protocol_autogen/README.md for more info.
+
+              cmake -S cmake/codegen -B build/codegen
+              cmake --build build/codegen --target setup_code_gen
+              cmake --build build/codegen --target code_gen
+
+            In an already configured build directory, the 'setup_code_gen' and
+            'code_gen' targets do the same thing.
+        run: |
+          # Record untracked files in the index without staging their contents,
+          # so that classes generated for a newly added transaction or ledger
+          # entry type show up in the diff below rather than silently as an
+          # empty one.
+          git add --intent-to-add .
+          DIFF=$(git status --porcelain)
+          if [ -n "${DIFF}" ]; then
+              # Print the differences to give the contributor a hint about what to
+              # expect when running code generation on their own machine.
+              git diff
+              echo "${MESSAGE}"
+              exit 1
+          fi
--- a/.github/workflows/reusable-check-levelization.yml
+++ b/.github/workflows/reusable-check-levelization.yml
@@ -0,0 +1,46 @@
+# This workflow checks if the dependencies between the modules are correctly
+# indexed.
+name: Check levelization
+
+# This workflow can only be triggered by other workflows.
+on: workflow_call
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-levelization
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  levelization:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Check levelization
+        run: python .github/scripts/levelization/generate.py
+      - name: Check for differences
+        env:
+          MESSAGE: |
+
+            The dependency relationships between the modules in xrpld have
+            changed, which may be an improvement or a regression.
+
+            A rule of thumb is that if your changes caused something to be
+            removed from loops.txt, it's probably an improvement, while if
+            something was added, it's probably a regression.
+
+            Run '.github/scripts/levelization/generate.py' in your repo, commit
+            and push the changes. See .github/scripts/levelization/README.md for
+            more info.
+        run: |
+          DIFF=$(git status --porcelain)
+          if [ -n "${DIFF}" ]; then
+              # Print the differences to give the contributor a hint about what to
+              # expect when running levelization on their own machine.
+              git diff
+              echo "${MESSAGE}"
+              exit 1
+          fi
--- a/.github/workflows/reusable-check-otel-naming.yml
+++ b/.github/workflows/reusable-check-otel-naming.yml
@@ -0,0 +1,43 @@
+# This workflow checks that OpenTelemetry span-attribute names stay consistent
+# across the code (*SpanNames.h), collector, Tempo, dashboards, and docs.
+# See .github/scripts/otel-naming/check_otel_naming.py and the
+# "Telemetry span attribute naming" section in CONTRIBUTING.md.
+name: Check OTel naming
+
+# This workflow can only be triggered by other workflows.
+on: workflow_call
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-otel-naming
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  otel-naming:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - name: Test the OTel naming checker
+        # The checker's own unit tests, run before the check itself so a broken
+        # rule is reported as a broken rule rather than as a naming violation
+        # (or, worse, as a rule that silently stops flagging anything).
+        # stdlib `unittest` only: the repo installs no third-party test runner
+        # for CI, and the checker itself is deliberately dependency-free.
+        run: python -m unittest discover -s .github/scripts/otel-naming -p 'test_*.py' --verbose
+      - name: Check OTel naming
+        # The script is stdlib-only and reads only files already in the tree;
+        # it enforces each rule only when the layer it needs is present, so it
+        # works whether telemetry changes land in one PR or several.
+        run: python .github/scripts/otel-naming/check_otel_naming.py
+      - name: Check histogram bucket parity
+        # The C++ millisecond ladder and the collector's spanmetrics ladder are
+        # specified to agree over their shared range. They were identical when
+        # first shipped, then the collector side alone was extended and nothing
+        # noticed for eleven phases: native histograms stayed capped at 5s while
+        # spans reached 30s, so every quantile above 5s reported a flat 5000.
+        # Nothing but a check keeps two lists in step.
+        run: python .github/scripts/telemetry/check_bucket_parity.py
--- a/.github/workflows/reusable-check-rename.yml
+++ b/.github/workflows/reusable-check-rename.yml
@@ -0,0 +1,56 @@
+# This workflow checks if the codebase is properly renamed, see more info in
+# .github/scripts/rename/README.md.
+name: Check rename
+
+# This workflow can only be triggered by other workflows.
+on: workflow_call
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-rename
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  rename:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Check definitions
+        run: .github/scripts/rename/definitions.sh .
+      - name: Check copyright notices
+        run: .github/scripts/rename/copyright.sh .
+      - name: Check CMake configs
+        run: .github/scripts/rename/cmake.sh .
+      - name: Check binary name
+        run: .github/scripts/rename/binary.sh .
+      - name: Check namespaces
+        run: .github/scripts/rename/namespace.sh .
+      - name: Check config name
+        run: .github/scripts/rename/config.sh .
+      - name: Check include guards
+        run: .github/scripts/rename/include.sh .
+      - name: Check documentation
+        run: .github/scripts/rename/docs.sh .
+      - name: Check for differences
+        env:
+          MESSAGE: |
+
+            One or more files contain changes that do not adhere to new naming
+            conventions.
+
+            Run the scripts in '.github/scripts/rename/' in your repo, commit
+            and push the changes. See .github/scripts/rename/README.md for
+            more info.
+        run: |
+          DIFF=$(git status --porcelain)
+          if [ -n "${DIFF}" ]; then
+              # Print the differences to give the contributor a hint about what to
+              # expect when running the renaming scripts on their own machine.
+              git diff
+              echo "${MESSAGE}"
+              exit 1
+          fi
--- a/.github/workflows/reusable-clang-tidy.yml
+++ b/.github/workflows/reusable-clang-tidy.yml
@@ -0,0 +1,201 @@
+name: Run clang-tidy on files
+
+on:
+  workflow_call:
+    inputs:
+      create_issue_on_failure:
+        description: "Whether to create an issue if the check failed"
+        type: boolean
+        default: false
+
+defaults:
+  run:
+    shell: bash
+
+env:
+  BUILD_DIR: build
+  BUILD_TYPE: Debug # Debug so that ASSERTS and such participate in clang-tidy check
+
+  OUTPUT_FILE: /tmp/clang-tidy-output.txt
+  FILTERED_OUTPUT_FILE: /tmp/clang-tidy-filtered-output.txt
+  DIFF_FILE: /tmp/clang-tidy-git-diff.txt
+  ISSUE_FILE: /tmp/clang-tidy-issue.md
+
+  COMPILER: clang
+
+jobs:
+  determine-files:
+    permissions:
+      contents: read
+    uses: XRPLF/actions/.github/workflows/determine-tidy-files.yml@d041ac9f1fa9f07a4ba335eb4c1c82233fb3fef6
+
+  run-clang-tidy:
+    name: Run clang tidy
+    needs: [determine-files]
+    if: ${{ needs.determine-files.outputs.cpp_changed_files != '' || needs.determine-files.outputs.need_full_run == 'true' }}
+    runs-on: ["self-hosted", "Linux", "X64", "heavy"]
+    container: "ghcr.io/xrplf/xrpld/nix-debian:sha-a0074f8"
+    permissions:
+      contents: read
+      issues: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Prepare runner
+        uses: XRPLF/actions/prepare-runner@51af40f99ea91a08c3528ddf16d98132dcc7e63c
+        with:
+          enable_ccache: false
+
+      - name: Print build environment
+        uses: XRPLF/actions/print-build-env@59dec886e4afb05a1724443af08baccbc045b574
+
+      - name: Get number of processors
+        uses: XRPLF/actions/get-nproc@cf0433aa74563aead044a1e395610c96d65a37cf
+        id: nproc
+
+      - name: Set compiler environment
+        uses: ./.github/actions/set-compiler-env
+        with:
+          compiler: ${{ env.COMPILER }}
+
+      - name: Use cargo artifacts cache
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          cache-directories: ${{ env.BUILD_DIR }}/corrosion
+          save-if: ${{ github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/heads/release') }}
+          workspaces: crates -> ../${{ env.BUILD_DIR }}/cargo
+
+      - name: Setup Conan
+        uses: ./.github/actions/setup-conan
+
+      - name: Build dependencies
+        uses: ./.github/actions/build-deps
+        with:
+          build_nproc: ${{ steps.nproc.outputs.nproc }}
+          build_type: ${{ env.BUILD_TYPE }}
+          log_verbosity: verbose
+
+      - name: Configure CMake
+        working-directory: ${{ env.BUILD_DIR }}
+        run: |
+          cmake \
+              -G 'Ninja' \
+              -DCMAKE_TOOLCHAIN_FILE:FILEPATH=build/generators/conan_toolchain.cmake \
+              -DCMAKE_BUILD_TYPE="${BUILD_TYPE}" \
+              -Dtests=ON \
+              -Dwerr=ON \
+              -Dxrpld=ON \
+              -Dverify_headers=ON \
+              -Drust=ON \
+              ..
+
+      - name: Build clang-tidy prerequisites
+        working-directory: ${{ env.BUILD_DIR }}
+        run: |
+          ninja -j ${{ steps.nproc.outputs.nproc }} tidy_prerequisites
+
+      - name: Run clang tidy
+        id: run_clang_tidy
+        continue-on-error: true
+        env:
+          TARGETS: ${{ needs.determine-files.outputs.need_full_run != 'true' && needs.determine-files.outputs.cpp_changed_files || 'include src tests' }}
+        run: |
+          set -o pipefail
+          run-clang-tidy -j ${{ steps.nproc.outputs.nproc }} -p "${BUILD_DIR}" -quiet -fix -format -allow-no-checks ${TARGETS} 2>&1 | tee "${OUTPUT_FILE}"
+
+      - name: Print filtered clang-tidy errors
+        if: ${{ steps.run_clang_tidy.outcome != 'success' }}
+        run: |
+          bin/filter-clang-tidy.py "${OUTPUT_FILE}"
+
+      - name: Upload clang-tidy output
+        if: ${{ github.event.repository.visibility == 'public' && steps.run_clang_tidy.outcome != 'success' }}
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          path: ${{ env.OUTPUT_FILE }}
+          archive: false
+          retention-days: 30
+
+      - name: Check for changes
+        id: files_changed
+        continue-on-error: true
+        run: |
+          git diff --exit-code
+
+      - name: Fix style
+        if: ${{ steps.files_changed.outcome != 'success' }}
+        run: |
+          pre-commit run --all-files || true
+
+      - name: Generate git diff
+        if: ${{ steps.files_changed.outcome != 'success' }}
+        run: |
+          git diff | tee "${DIFF_FILE}"
+
+      - name: Upload clang-tidy diff output
+        if: ${{ github.event.repository.visibility == 'public' && steps.files_changed.outcome != 'success' }}
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          path: ${{ env.DIFF_FILE }}
+          archive: false
+          retention-days: 30
+
+      - name: Write issue header
+        if: ${{ steps.run_clang_tidy.outcome != 'success' }}
+        run: |
+          cat >"${ISSUE_FILE}" <<EOF
+          ## Clang-tidy Check Failed
+
+          ### Clang-tidy Output:
+          \`\`\`
+          EOF
+
+      - name: Append filtered clang-tidy output to issue body
+        if: ${{ steps.run_clang_tidy.outcome != 'success' }}
+        run: |
+          if [ -f "${OUTPUT_FILE}" ]; then
+              # Filter to the unique errors with their source context.
+              bin/filter-clang-tidy.py "${OUTPUT_FILE}" >"${FILTERED_OUTPUT_FILE}" || true
+
+              # If filtered output is empty, use original (might be a different error format)
+              if [ ! -s "${FILTERED_OUTPUT_FILE}" ]; then
+                  cp "${OUTPUT_FILE}" "${FILTERED_OUTPUT_FILE}"
+              fi
+
+              # Truncate if too large
+              head -c 60000 "${FILTERED_OUTPUT_FILE}" >>"${ISSUE_FILE}"
+              if [ "$(wc -c <"${FILTERED_OUTPUT_FILE}")" -gt 60000 ]; then
+                  echo "" >>"${ISSUE_FILE}"
+                  echo "... (output truncated, see artifacts for full output)" >>"${ISSUE_FILE}"
+              fi
+
+              rm "${FILTERED_OUTPUT_FILE}"
+          else
+              echo "No output file found" >>"${ISSUE_FILE}"
+          fi
+
+      - name: Append issue footer
+        if: ${{ steps.run_clang_tidy.outcome != 'success' }}
+        run: |
+          cat >>"${ISSUE_FILE}" <<EOF
+          \`\`\`
+
+          ---
+          *This issue was automatically created by the clang-tidy workflow.*
+          EOF
+
+      - name: Create issue
+        if: ${{ steps.run_clang_tidy.outcome != 'success' && inputs.create_issue_on_failure }}
+        uses: XRPLF/actions/create-issue@2b8bc36af85b88bca0dd7bfac2e2dc05f94ad712
+        with:
+          title: "Clang-tidy check failed"
+          body_file: ${{ env.ISSUE_FILE }}
+          labels: "Bug,Clang-tidy"
+          assignees: "godexsoft,mathbunnyru"
+
+      - name: Fail if clang-tidy found issues
+        if: ${{ steps.run_clang_tidy.outcome != 'success' }}
+        run: |
+          echo "Clang-tidy check failed!"
+          exit 1
--- a/.github/workflows/reusable-package.yml
+++ b/.github/workflows/reusable-package.yml
@@ -0,0 +1,129 @@
+# Build Linux packages from the pre-built xrpld and validator-keys artifacts:
+#
+#   - one job per distro, taken from "package_configs" in linux.json
+#   - each job runs in that distro's container, which is what decides DEB or RPM
+#   - with 'publish: true' a job also uploads what it built
+#     (see package/publish_pkg.sh)
+#
+# Only linux/amd64 is supported; the runner is hardcoded in the job below.
+name: Package
+
+on:
+  workflow_call:
+    inputs:
+      publish:
+        description: "Whether to publish the packages after building them."
+        required: false
+        type: boolean
+        default: false
+      nexus_url:
+        description: "The base URL of the Nexus instance hosting the deb and rpm repositories."
+        required: false
+        type: string
+        default: https://packages.xrplf.org
+
+    secrets:
+      remote_username:
+        description: "The username of a Nexus account with write access to the repositories."
+        required: false
+      remote_password:
+        description: "The password or token for that Nexus account."
+        required: false
+      signing_key:
+        description: "Armoured PGP private key used to sign the RPMs. Required when publishing."
+        required: false
+
+defaults:
+  run:
+    shell: bash
+
+env:
+  BUILD_DIR: build
+
+jobs:
+  generate-matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.generate.outputs.matrix }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Set up Python
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: "3.13"
+
+      - name: Generate packaging matrix
+        id: generate
+        working-directory: .github/scripts/strategy-matrix
+        run: ./generate.py --packaging >>"${GITHUB_OUTPUT}"
+
+  package:
+    needs: [generate-matrix]
+    if: ${{ github.event.repository.visibility == 'public' || startsWith(github.ref, 'refs/tags/') }}
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJson(needs.generate-matrix.outputs.matrix) }}
+    name: "${{ matrix.xrpld_artifact_name }}"
+    permissions:
+      contents: read
+    runs-on: ["self-hosted", "Linux", "X64", "heavy"]
+    container: ${{ matrix.image }}
+    timeout-minutes: 30
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Download pre-built xrpld binary
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: ${{ matrix.xrpld_artifact_name }}
+          path: ${{ env.BUILD_DIR }}
+
+      - name: Download pre-built validator-keys binary
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: ${{ matrix.validator_keys_artifact_name }}
+          path: ${{ env.BUILD_DIR }}
+
+      - name: Make binaries executable
+        run: chmod +x "${BUILD_DIR}/xrpld" "${BUILD_DIR}/validator-keys"
+
+      - name: Determine release info
+        id: release_info
+        uses: ./.github/actions/release-info
+
+      - name: Build package
+        env:
+          PKG_RELEASE: ${{ steps.release_info.outputs.pkg_release }}
+          PKG_CHANNEL: ${{ steps.release_info.outputs.channel }}
+        run: ./package/build_pkg.sh
+
+      # Before the upload, so the artifact and the published package are the
+      # same bytes. DEBs are not signed, so the key is never set on that job.
+      - name: Sign RPM
+        if: ${{ inputs.publish && matrix.distro == 'rhel' }}
+        env:
+          PKG_SIGNING_KEY: ${{ secrets.signing_key }}
+        run: ./package/sign_rpm.sh "${BUILD_DIR}"
+
+      - name: Upload package artifact
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: ${{ matrix.xrpld_artifact_name }}-pkg
+          path: |
+            ${{ env.BUILD_DIR }}/debbuild/*.deb
+            ${{ env.BUILD_DIR }}/debbuild/*.ddeb
+            ${{ env.BUILD_DIR }}/rpmbuild/RPMS/**/*.rpm
+          if-no-files-found: error
+
+      - name: Publish package
+        if: ${{ inputs.publish }}
+        env:
+          CHANNEL: ${{ steps.release_info.outputs.channel }}
+          NEXUS_URL: ${{ inputs.nexus_url }}
+          NEXUS_USERNAME: ${{ secrets.remote_username }}
+          NEXUS_PASSWORD: ${{ secrets.remote_password }}
+        run: ./package/publish_pkg.sh "${CHANNEL}" "${BUILD_DIR}"
--- a/.github/workflows/reusable-rust.yml
+++ b/.github/workflows/reusable-rust.yml
@@ -0,0 +1,86 @@
+# Clippy, coverage and documentation for the Rust crates in crates/. Each runs
+# as an independent job on a GitHub-hosted runner, but inside the same container
+# image used to build the crates in the C++/Corrosion path, so the toolchain
+# (and therefore the lints, coverage instrumentation and the cargo cache) matches
+# what production builds use.
+#
+# Rust unit tests are deliberately NOT run here. They run as part of the C++
+# build (reusable-build-test-config.yml), which already compiles the crates on a
+# self-hosted runner, so there is no need to provision a toolchain again.
+name: Rust
+
+on:
+  workflow_call:
+    secrets:
+      CODECOV_TOKEN:
+        description: "The Codecov token to use for uploading coverage reports."
+        required: true
+
+defaults:
+  run:
+    shell: bash
+    working-directory: crates
+
+permissions:
+  contents: read
+
+jobs:
+  clippy:
+    runs-on: ubuntu-latest
+    container: ghcr.io/xrplf/xrpld/nix-ubuntu:sha-a0074f8
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Use cargo artifacts cache
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          workspaces: crates
+
+      - name: Run clippy
+        run: cargo clippy --workspace --all-targets --all-features --locked -- -D warnings
+
+  coverage:
+    runs-on: ubuntu-latest
+    container: ghcr.io/xrplf/xrpld/nix-ubuntu:sha-a0074f8
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Use cargo artifacts cache
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          workspaces: crates
+
+      - name: Generate coverage report
+        run: cargo llvm-cov nextest --workspace --all-features --locked --no-tests=warn --lcov --output-path lcov.info
+
+      - name: Upload coverage report
+        if: ${{ github.repository == 'XRPLF/rippled' }}
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
+        with:
+          disable_search: true
+          disable_telem: true
+          fail_ci_if_error: true
+          files: crates/lcov.info
+          flags: rust
+          plugins: noop
+          token: ${{ secrets.CODECOV_TOKEN }}
+          verbose: true
+
+  doc:
+    runs-on: ubuntu-latest
+    container: ghcr.io/xrplf/xrpld/nix-ubuntu:sha-a0074f8
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Use cargo artifacts cache
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          workspaces: crates
+
+      - name: Build documentation
+        env:
+          RUSTDOCFLAGS: "-D warnings"
+        run: cargo doc --workspace --no-deps --all-features --locked
--- a/.github/workflows/reusable-strategy-matrix.yml
+++ b/.github/workflows/reusable-strategy-matrix.yml
@@ -0,0 +1,42 @@
+name: Generate strategy matrix
+
+on:
+  workflow_call:
+    inputs:
+      os:
+        description: 'The operating system to use for the build ("linux", "macos", "windows", or empty for all).'
+        required: false
+        type: string
+    outputs:
+      matrix:
+        description: "The generated strategy matrix."
+        value: ${{ jobs.generate-matrix.outputs.matrix }}
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  generate-matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.generate.outputs.matrix }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Set up Python
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: "3.13"
+
+      - name: Generate strategy matrix
+        working-directory: .github/scripts/strategy-matrix
+        id: generate
+        env:
+          GENERATE_CONFIG: ${{ inputs.os != '' && format('--config={0}', inputs.os) || '' }}
+          # Run only the minimal matrix for pull requests that are not yet
+          # labeled "Ready to merge" or "Full CI build". Any other event (merge
+          # queue, push, schedule, manual dispatch) runs the full matrix.
+          GENERATE_MINIMAL: ${{ (github.event_name == 'pull_request' && !contains(github.event.pull_request.labels.*.name, 'Ready to merge') && !contains(github.event.pull_request.labels.*.name, 'Full CI build')) && '--minimal' || '' }}
+        run: ./generate.py ${GENERATE_CONFIG} ${GENERATE_MINIMAL} >>"${GITHUB_OUTPUT}"
--- a/.github/workflows/reusable-upload-recipe.yml
+++ b/.github/workflows/reusable-upload-recipe.yml
@@ -0,0 +1,95 @@
+# This workflow exports the built libxrpl package to the Conan remote.
+name: Upload Conan recipe
+
+# This workflow can only be triggered by other workflows.
+on:
+  workflow_call:
+    inputs:
+      remote_name:
+        description: "The name of the Conan remote to use."
+        required: false
+        type: string
+        default: xrplf
+      remote_url:
+        description: "The URL of the Conan endpoint to use."
+        required: false
+        type: string
+        default: https://conan.xrplf.org/repository/conan/
+
+    secrets:
+      remote_username:
+        description: "The username for logging into the Conan remote."
+        required: true
+      remote_password:
+        description: "The password for logging into the Conan remote."
+        required: true
+
+    outputs:
+      recipe_ref:
+        description: "The Conan recipe reference ('name/version') that was uploaded."
+        value: ${{ jobs.upload.outputs.ref }}
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-upload-recipe
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  upload:
+    runs-on: ubuntu-latest
+    container: ghcr.io/xrplf/xrpld/nix-ubuntu:sha-a0074f8
+    env:
+      REMOTE_NAME: ${{ inputs.remote_name }}
+      CONAN_LOGIN_USERNAME_XRPLF: ${{ secrets.remote_username }}
+      CONAN_PASSWORD_XRPLF: ${{ secrets.remote_password }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Determine release info
+        id: release_info
+        uses: ./.github/actions/release-info
+
+      - name: Set up Conan
+        uses: ./.github/actions/setup-conan
+        with:
+          remote_name: ${{ inputs.remote_name }}
+          remote_url: ${{ inputs.remote_url }}
+
+      - name: Log into Conan remote
+        run: conan remote login "${REMOTE_NAME}" "${CONAN_LOGIN_USERNAME_XRPLF}" --password "${CONAN_PASSWORD_XRPLF}"
+
+      - name: Upload Conan recipe (version)
+        run: |
+          conan export . --version=${{ steps.release_info.outputs.version }}
+          conan upload --confirm --check --remote="${REMOTE_NAME}" xrpl/${{ steps.release_info.outputs.version }}
+
+      # When this workflow is triggered by a push event, it will always be when merging into the
+      # 'develop' branch, see on-trigger.yml.
+      - name: Upload Conan recipe (develop)
+        if: ${{ github.event_name == 'push' }}
+        run: |
+          conan export . --version=develop
+          conan upload --confirm --check --remote="${REMOTE_NAME}" xrpl/develop
+
+      # When this workflow is triggered by a pull request event, it will always be when merging into
+      # one of the 'release' branches, see on-pr.yml.
+      - name: Upload Conan recipe (rc)
+        if: ${{ github.event_name == 'pull_request' }}
+        run: |
+          conan export . --version=rc
+          conan upload --confirm --check --remote="${REMOTE_NAME}" xrpl/rc
+
+      # When this workflow is triggered by a push event, it will always be when tagging a final
+      # release, see on-tag.yml.
+      - name: Upload Conan recipe (release)
+        if: ${{ startsWith(github.ref, 'refs/tags/') }}
+        run: |
+          conan export . --version=release
+          conan upload --confirm --check --remote="${REMOTE_NAME}" xrpl/release
+
+    outputs:
+      ref: xrpl/${{ steps.release_info.outputs.version }}
--- a/.github/workflows/telemetry-validation.yml
+++ b/.github/workflows/telemetry-validation.yml
@@ -0,0 +1,382 @@
+# Telemetry Validation CI Workflow
+#
+# Builds rippled with telemetry enabled, runs the multi-node workload
+# harness, validates all telemetry data, and runs performance benchmarks.
+#
+# This is a separate workflow from the main CI. It runs:
+#   - On manual dispatch (workflow_dispatch)
+#   - On pushes to telemetry-related branches
+#
+# The workflow is intentionally heavyweight (builds rippled, starts Docker
+# services, runs a multi-node cluster) — it validates the full telemetry
+# stack end-to-end rather than individual unit tests.
+#
+# Architecture: three jobs to leverage cached dependencies:
+#   0. linux-image-tag — reads the CI image tag from the build matrix so this
+#      workflow cannot drift onto a different compiler than the main CI.
+#   1. build-xrpld — runs on a self-hosted runner inside the same container
+#      image the main CI uses. This ensures Conan packages are fetched from
+#      the XRPLF remote instead of built from source, and ccache hits the
+#      remote cache.
+#   2. validate-telemetry — runs on ubuntu-latest (which has Docker) to
+#      launch the telemetry stack (OTel collector, Prometheus, Tempo, etc.)
+#      and validate the full pipeline end-to-end.
+
+name: Telemetry Validation
+
+on:
+  workflow_dispatch:
+    # NOTE: rpc_rate / rpc_duration / tx_tps / tx_duration have NO effect.
+    # They are forwarded to run-full-validation.sh, which parses them into
+    # shell variables and never reads them again — load shape comes entirely
+    # from --profile and docker/telemetry/workload/workload-profiles.json.
+    # They are kept (and labelled) rather than removed so existing dispatch
+    # bookmarks and any saved input sets do not break. To change the load,
+    # edit or add a profile in workload-profiles.json.
+    inputs:
+      rpc_rate:
+        description: "UNUSED — has no effect. Load shape comes from the workload profile."
+        required: false
+        default: "50"
+      rpc_duration:
+        description: "UNUSED — has no effect. Load shape comes from the workload profile."
+        required: false
+        default: "120"
+      tx_tps:
+        description: "UNUSED — has no effect. Load shape comes from the workload profile."
+        required: false
+        default: "5"
+      tx_duration:
+        description: "UNUSED — has no effect. Load shape comes from the workload profile."
+        required: false
+        default: "120"
+      run_benchmark:
+        description: "Run performance benchmarks (the only input that changes behaviour)"
+        required: false
+        type: boolean
+        default: false
+
+  push:
+    branches:
+      - "pratik/otel-phase*"
+      - "feature/otel-*"
+      - "feature/telemetry-*"
+    # Keep these globs pointing at paths that actually exist. Two earlier
+    # entries (include/xrpl/basics/Telemetry*.h, src/xrpld/app/misc/Telemetry*)
+    # matched zero tracked files, so a pure C++ telemetry change never
+    # triggered this workflow on push — only edits under docker/telemetry/**
+    # or to this file did. The telemetry sources live in the three telemetry
+    # module directories below.
+    paths:
+      - ".github/workflows/telemetry-validation.yml"
+      - "docker/telemetry/**"
+      - "include/xrpl/telemetry/**"
+      - "src/libxrpl/telemetry/**"
+      - "src/libxrpl/beast/insight/**"
+      - "src/xrpld/telemetry/**"
+
+concurrency:
+  group: telemetry-validation-${{ github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+env:
+  BUILD_DIR: build
+
+jobs:
+  # ── Job 0: Resolve the CI image tag ────────────────────────────────
+  # The tag is pinned once, alongside the build matrix, in linux.json. Reading
+  # it here rather than hardcoding a second copy means this workflow always
+  # builds in the same image (and therefore the same compiler) as the main CI.
+  # A hardcoded copy silently went stale and left this job on gcc 13 after the
+  # rest of CI moved to gcc 15, which broke the build on code the main CI
+  # compiled fine.
+  linux-image-tag:
+    runs-on: ubuntu-latest
+    outputs:
+      tag: ${{ steps.tag.outputs.tag }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Read nix image tag
+        id: tag
+        run: echo "tag=$(jq -r .image_tag .github/scripts/strategy-matrix/linux.json)" >>"${GITHUB_OUTPUT}"
+
+  # ── Job 1: Build xrpld in the same container the main CI uses ──────
+  # This ensures Conan binary packages are fetched from the XRPLF remote
+  # (matching package IDs) and ccache hits the remote compilation cache.
+  build-xrpld:
+    name: Build xrpld
+    needs: linux-image-tag
+    runs-on: [self-hosted, Linux, X64, heavy]
+    container: ghcr.io/xrplf/xrpld/nix-debian:${{ needs.linux-image-tag.outputs.tag }}
+    timeout-minutes: 60
+    env:
+      CCACHE_NAMESPACE: telemetry-validation
+      CCACHE_REMOTE_ONLY: true
+      CCACHE_REMOTE_STORAGE: http://cache.dev.ripplex.io:8080|layout=bazel
+      CCACHE_SLOPPINESS: include_file_ctime,include_file_mtime
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Prepare runner
+        uses: XRPLF/actions/prepare-runner@c00c22ada3bd6bcda48fcb0d62fbbab49fec8a0f
+        with:
+          enable_ccache: ${{ github.repository_owner == 'XRPLF' }}
+
+      - name: Print build environment
+        uses: XRPLF/actions/print-build-env@59dec886e4afb05a1724443af08baccbc045b574
+
+      - name: Get number of processors
+        uses: XRPLF/actions/get-nproc@cf0433aa74563aead044a1e395610c96d65a37cf
+        id: nproc
+        with:
+          subtract: 2
+
+      # The nix image ships several toolchains, so CC/CXX must be set
+      # explicitly for Conan to detect the intended one. gcc matches the
+      # debian gcc-release config the main CI builds.
+      - name: Set compiler environment
+        uses: ./.github/actions/set-compiler-env
+        with:
+          compiler: gcc
+
+      - name: Setup Conan
+        uses: ./.github/actions/setup-conan
+
+      - name: Build dependencies
+        uses: ./.github/actions/build-deps
+        with:
+          build_nproc: ${{ steps.nproc.outputs.nproc }}
+          build_type: Release
+          log_verbosity: verbose
+
+      # telemetry is passed explicitly even though the CMake option and the
+      # Conan recipe both default it on. The whole point of this workflow is to
+      # exercise telemetry, so it should not silently depend on a default it
+      # does not control: if that default ever flips, every span and metric
+      # assertion would fail for a reason no log names. Stated here, a build
+      # without the dependency fails loudly instead, because CMakeLists.txt
+      # does find_package(opentelemetry-cpp CONFIG REQUIRED) under this option.
+      - name: Configure CMake
+        working-directory: ${{ env.BUILD_DIR }}
+        run: |
+          cmake \
+              -G Ninja \
+              -DCMAKE_TOOLCHAIN_FILE:FILEPATH=build/generators/conan_toolchain.cmake \
+              -DCMAKE_BUILD_TYPE=Release \
+              -Dtelemetry=ON \
+              ..
+
+      - name: Build xrpld
+        working-directory: ${{ env.BUILD_DIR }}
+        env:
+          BUILD_NPROC: ${{ steps.nproc.outputs.nproc }}
+        run: |
+          cmake \
+              --build . \
+              --config Release \
+              --parallel "${BUILD_NPROC}" \
+              --target xrpld
+
+      - name: Show ccache statistics
+        if: ${{ github.repository_owner == 'XRPLF' }}
+        run: ccache --show-stats -vv
+
+      - name: Upload xrpld binary
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: xrpld-telemetry
+          path: ${{ env.BUILD_DIR }}/xrpld
+          retention-days: 1
+          if-no-files-found: error
+
+  # ── Job 2: Run telemetry validation on ubuntu-latest (has Docker) ──
+  validate-telemetry:
+    name: Telemetry Stack Validation
+    needs: build-xrpld
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Install Python dependencies
+        run: pip3 install -r docker/telemetry/workload/requirements.txt
+
+      - name: Download xrpld binary
+        uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e # v4.2.1
+        with:
+          name: xrpld-telemetry
+          path: ${{ env.BUILD_DIR }}
+
+      - name: Make binaries and scripts executable
+        run: |
+          chmod +x ${{ env.BUILD_DIR }}/xrpld
+          chmod +x docker/telemetry/workload/*.sh
+
+      - name: Run full telemetry validation
+        id: validation
+        env:
+          RPC_RATE: ${{ github.event.inputs.rpc_rate || '50' }}
+          RPC_DURATION: ${{ github.event.inputs.rpc_duration || '120' }}
+          TX_TPS: ${{ github.event.inputs.tx_tps || '5' }}
+          TX_DURATION: ${{ github.event.inputs.tx_duration || '120' }}
+          RUN_BENCHMARK: ${{ github.event.inputs.run_benchmark }}
+        run: |
+          # The four rate/duration flags below are inert (see the
+          # workflow_dispatch inputs note): run-full-validation.sh parses them
+          # and never reads them. Load shape comes from the default
+          # --profile full-validation. They are still passed so the flags stay
+          # exercised if they are ever wired up.
+          ARGS="--xrpld ${{ env.BUILD_DIR }}/xrpld --skip-loki"
+          ARGS="$ARGS --rpc-rate $RPC_RATE"
+          ARGS="$ARGS --rpc-duration $RPC_DURATION"
+          ARGS="$ARGS --tx-tps $TX_TPS"
+          ARGS="$ARGS --tx-duration $TX_DURATION"
+          if [ "$RUN_BENCHMARK" = "true" ]; then
+              ARGS="$ARGS --with-benchmark"
+          fi
+          docker/telemetry/workload/run-full-validation.sh $ARGS
+        # continue-on-error allows subsequent steps (artifact upload,
+        # summary printing) to run even if validation fails. The final
+        # "Check validation result" step re-checks steps.validation.outcome
+        # (the pre-continue-on-error result) and fails the job properly.
+        continue-on-error: true
+
+      - name: Upload validation reports
+        if: always()
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: telemetry-validation-reports
+          path: /tmp/xrpld-validation/reports/
+          retention-days: 30
+
+      # Keyed on the validation step's own outcome, not job status. The step
+      # above sets continue-on-error, so the job is not failing at this point
+      # and `if: failure()` never fires -- which silently skipped these logs on
+      # every failed run, and they are the only record of why a node did not
+      # reach consensus.
+      #
+      # stdout.log matters as much as debug.log: a node that dies before its
+      # log sink opens writes no debug.log at all, so stdout is the only place
+      # its reason survives. A run that timed out at 4/5 nodes was left
+      # undiagnosable because that file was not collected.
+      - name: Upload node logs
+        if: always() && steps.validation.outcome != 'success'
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: xrpld-node-logs
+          path: |
+            /tmp/xrpld-validation/node*/debug.log
+            /tmp/xrpld-validation/node*/stdout.log
+            /tmp/xrpld-validation/*.log
+          retention-days: 7
+          if-no-files-found: warn
+
+      - name: Print validation summary
+        if: always()
+        run: |
+          REPORT="/tmp/xrpld-validation/reports/validation-report.json"
+          if [ -f "$REPORT" ]; then
+              echo "## Telemetry Validation Results" >>"$GITHUB_STEP_SUMMARY"
+              echo "" >>"$GITHUB_STEP_SUMMARY"
+              TOTAL=$(jq '.summary.total' "$REPORT")
+              PASSED=$(jq '.summary.passed' "$REPORT")
+              FAILED=$(jq '.summary.failed' "$REPORT")
+              echo "| Metric | Value |" >>"$GITHUB_STEP_SUMMARY"
+              echo "|--------|-------|" >>"$GITHUB_STEP_SUMMARY"
+              echo "| Total Checks | $TOTAL |" >>"$GITHUB_STEP_SUMMARY"
+              echo "| Passed | $PASSED |" >>"$GITHUB_STEP_SUMMARY"
+              echo "| Failed | $FAILED |" >>"$GITHUB_STEP_SUMMARY"
+              echo "" >>"$GITHUB_STEP_SUMMARY"
+              if [ "$FAILED" -gt 0 ]; then
+                  echo "### Failed Checks" >>"$GITHUB_STEP_SUMMARY"
+                  echo "" >>"$GITHUB_STEP_SUMMARY"
+                  jq -r '.checks[] | select(.passed == false) | "- **\(.name)**: \(.message)"' "$REPORT" >>"$GITHUB_STEP_SUMMARY"
+              fi
+          fi
+
+      # Publishes captured OTel timings + regression report to the Step Summary.
+      # When the committed baseline is a placeholder, emits a fenced JSON block
+      # that can be copy-pasted directly into baselines/baseline-timings.json.
+      # When the baseline is populated, summarises the top regressions so the
+      # PR author sees the failure reason without downloading artifacts.
+      - name: Print regression summary
+        if: always()
+        run: |
+          set -euo pipefail
+          TIMINGS="/tmp/xrpld-validation/reports/timings.json"
+          REGRESSION="/tmp/xrpld-validation/reports/regression-report.json"
+          BASELINE="docker/telemetry/workload/baselines/baseline-timings.json"
+
+          if [ ! -f "$TIMINGS" ]; then
+              echo "## Regression Gate: no timings captured" >>"$GITHUB_STEP_SUMMARY"
+              echo "::warning::capture_timings.py did not produce timings.json — regression gate was not evaluated."
+              exit 0
+          fi
+
+          if [ ! -f "$BASELINE" ]; then
+              echo "## Regression Gate: baseline file missing" >>"$GITHUB_STEP_SUMMARY"
+              echo "::error::baselines/baseline-timings.json not found in checkout"
+              exit 1
+          fi
+
+          # NOTE: do NOT use `jq -e` here. With -e, jq exits non-zero when the
+          # filter's result is boolean false — which is the normal case for a
+          # populated (non-placeholder) baseline — and that would be
+          # misreported as a parse failure. Plain `jq -r` exits 0 on any valid
+          # JSON, so a real non-zero exit genuinely means malformed JSON.
+          IS_PLACEHOLDER=$(jq -r '.placeholder == true or (.metrics | length == 0)' "$BASELINE") || {
+              echo "::error::Failed to parse baseline JSON"
+              exit 1
+          }
+
+          echo "## OTel Timings Regression Gate" >>"$GITHUB_STEP_SUMMARY"
+          echo "" >>"$GITHUB_STEP_SUMMARY"
+
+          if [ "$IS_PLACEHOLDER" = "true" ]; then
+              echo "### Paste into \`baselines/baseline-timings.json\`" >>"$GITHUB_STEP_SUMMARY"
+              echo "" >>"$GITHUB_STEP_SUMMARY"
+              echo "The committed baseline is a placeholder. Open a PR replacing" \
+                  "its contents with the JSON block below to activate the" \
+                  "regression gate." >>"$GITHUB_STEP_SUMMARY"
+              echo "" >>"$GITHUB_STEP_SUMMARY"
+              echo '```json' >>"$GITHUB_STEP_SUMMARY"
+              cat "$TIMINGS" >>"$GITHUB_STEP_SUMMARY"
+              echo '```' >>"$GITHUB_STEP_SUMMARY"
+          elif [ -f "$REGRESSION" ]; then
+              REGR_COUNT=$(jq -e '.summary.regressions' "$REGRESSION") || REGR_COUNT=0
+              IMPR_COUNT=$(jq -e '.summary.improvements' "$REGRESSION") || IMPR_COUNT=0
+              TOTAL=$(jq -e '.summary.total' "$REGRESSION") || TOTAL=0
+              echo "| Stat | Count |" >>"$GITHUB_STEP_SUMMARY"
+              echo "|------|-------|" >>"$GITHUB_STEP_SUMMARY"
+              echo "| Metrics compared | $TOTAL |" >>"$GITHUB_STEP_SUMMARY"
+              echo "| Regressions | $REGR_COUNT |" >>"$GITHUB_STEP_SUMMARY"
+              echo "| Improvements | $IMPR_COUNT |" >>"$GITHUB_STEP_SUMMARY"
+              echo "" >>"$GITHUB_STEP_SUMMARY"
+              if [ "$REGR_COUNT" -gt 0 ]; then
+                  echo "### Regressions" >>"$GITHUB_STEP_SUMMARY"
+                  echo "" >>"$GITHUB_STEP_SUMMARY"
+                  echo "| Metric | Baseline | Current | Δ | % | Unit |" >>"$GITHUB_STEP_SUMMARY"
+                  echo "|--------|---------:|--------:|--:|--:|------|" >>"$GITHUB_STEP_SUMMARY"
+                  jq -r '.metrics[] | select(.regressed) | "| \(.key) | \(.baseline) | \(.current) | \(.delta) | \(.pct_change)% | \(.unit) |"' \
+                      "$REGRESSION" >>"$GITHUB_STEP_SUMMARY"
+              fi
+          fi
+
+      - name: Cleanup
+        if: always()
+        run: |
+          docker/telemetry/workload/run-full-validation.sh --cleanup 2>/dev/null || true
+
+      - name: Check validation result
+        if: steps.validation.outcome == 'failure'
+        run: |
+          echo "Telemetry validation failed. Check the uploaded reports for details."
+          exit 1
--- a/.github/workflows/upload-conan-deps.yml
+++ b/.github/workflows/upload-conan-deps.yml
@@ -0,0 +1,130 @@
+name: Upload Conan Dependencies
+
+on:
+  schedule:
+    - cron: "0 3 * * 2-6"
+  workflow_dispatch:
+    inputs:
+      force_source_build:
+        description: "Force source build of all dependencies"
+        required: false
+        default: false
+        type: boolean
+      force_upload:
+        description: "Force upload of all dependencies"
+        required: false
+        default: false
+        type: boolean
+  pull_request:
+    branches: [develop]
+    paths:
+      # This allows testing changes to the upload workflow in a PR
+      - .github/workflows/upload-conan-deps.yml
+  push:
+    branches: [develop]
+    paths:
+      - .github/workflows/upload-conan-deps.yml
+      - .github/workflows/reusable-strategy-matrix.yml
+      - .github/actions/build-deps/action.yml
+      - .github/actions/setup-conan/action.yml
+      - ".github/scripts/strategy-matrix/**"
+      - conanfile.py
+      - conan.lock
+      - conan/profiles/**
+
+env:
+  CONAN_REMOTE_NAME: xrplf
+  CONAN_REMOTE_URL: https://conan.xrplf.org/repository/conan/
+  NPROC_SUBTRACT: 2
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  # Generate the strategy matrix to be used by the following job.
+  generate-matrix:
+    uses: ./.github/workflows/reusable-strategy-matrix.yml
+
+  # Build and upload the dependencies for each configuration.
+  run-upload-conan-deps:
+    needs:
+      - generate-matrix
+    strategy:
+      fail-fast: false
+      matrix: ${{ fromJson(needs.generate-matrix.outputs.matrix) }}
+    runs-on: ${{ matrix.architecture.runner }}
+    container: ${{ matrix.image || null }}
+    steps:
+      - name: Cleanup workspace (macOS and Windows)
+        if: ${{ runner.os == 'macOS' || runner.os == 'Windows' }}
+        uses: XRPLF/actions/cleanup-workspace@c7d9ce5ebb03c752a354889ecd870cadfc2b1cd4
+
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Prepare runner
+        uses: XRPLF/actions/prepare-runner@c00c22ada3bd6bcda48fcb0d62fbbab49fec8a0f
+        with:
+          enable_ccache: false
+
+      # Before any step that uses a build tool, composite actions included.
+      - name: Setup Nix environment
+        if: ${{ matrix.toolchain == 'nix' }}
+        uses: ./.github/actions/setup-nix-env
+
+      - name: Print build environment
+        uses: XRPLF/actions/print-build-env@59dec886e4afb05a1724443af08baccbc045b574
+
+      - name: Get number of processors
+        uses: XRPLF/actions/get-nproc@cf0433aa74563aead044a1e395610c96d65a37cf
+        id: nproc
+        with:
+          subtract: ${{ env.NPROC_SUBTRACT }}
+
+      - name: Set compiler environment (Linux)
+        if: ${{ runner.os == 'Linux' }}
+        uses: ./.github/actions/set-compiler-env
+        with:
+          compiler: ${{ matrix.compiler }}
+
+      # `setup-nix-env` already did this for the Nix toolchain.
+      - name: Setup Conan
+        if: ${{ matrix.toolchain != 'nix' }}
+        env:
+          SANITIZERS: ${{ matrix.sanitizers }}
+        uses: ./.github/actions/setup-conan
+        with:
+          remote_name: ${{ env.CONAN_REMOTE_NAME }}
+          remote_url: ${{ env.CONAN_REMOTE_URL }}
+
+      - name: Build dependencies
+        uses: ./.github/actions/build-deps
+        with:
+          build_nproc: ${{ steps.nproc.outputs.nproc }}
+          build_type: ${{ matrix.build_type }}
+          force_build: ${{ github.event_name == 'schedule' || github.event.inputs.force_source_build == 'true' }}
+          # Set the verbosity to "quiet" for Windows to avoid an excessive
+          # amount of logs. For other OSes, the "verbose" logs are more useful.
+          log_verbosity: ${{ runner.os == 'Windows' && 'quiet' || 'verbose' }}
+          sanitizers: ${{ matrix.sanitizers }}
+
+      - name: Check the Conan cache for Nix store references (Nix toolchain)
+        if: ${{ matrix.toolchain == 'nix' }}
+        run: ./bin/check-nix-store-refs.sh "${CONAN_HOME}"
+
+      - name: Log into Conan remote
+        if: ${{ github.repository == 'XRPLF/rippled' && (github.event_name == 'push' || github.event_name == 'workflow_dispatch') }}
+        run: conan remote login "${CONAN_REMOTE_NAME}" "${{ secrets.NEXUS_REMOTE_USERNAME }}" --password "${{ secrets.NEXUS_REMOTE_PASSWORD }}"
+
+      - name: Upload Conan packages
+        if: ${{ github.repository == 'XRPLF/rippled' && (github.event_name == 'push' || github.event_name == 'workflow_dispatch') }}
+        env:
+          FORCE_OPTION: ${{ github.event.inputs.force_upload == 'true' && '--force' || '' }}
+          CONAN_LOGIN_USERNAME_XRPLF: ${{ secrets.NEXUS_REMOTE_USERNAME }}
+          CONAN_PASSWORD_XRPLF: ${{ secrets.NEXUS_REMOTE_PASSWORD }}
+        run: conan upload "*" --remote="${CONAN_REMOTE_NAME}" --confirm ${FORCE_OPTION}
--- a/.gitignore
+++ b/.gitignore
@@ -1,62 +1,52 @@
 # .gitignore
+# cspell: disable

-bin/boostbook_catalog.xml
-bin/config.log
-bin/project-cache.jam
-
-# Ignore vim swap files.
-*.swp
-
-# Ignore SCons support files.
-.sconsign.dblite
-
-# Ignore python compiled files.
-*.pyc
-
-# Ignore Macintosh Desktop Services Store files.
+# Macintosh Desktop Services Store files.
 .DS_Store

-# Ignore backup/temps
+# Build, intermediate, and temporary artifacts.
 *~
-
-# Ignore object files.
 *.o
-build
-.nih_c
-tags
-TAGS
-bin/rippled
-Debug/*.*
-Release/*.*
+*.pdb
+*.swp
+/.clangd
+Debug/
+Release/
+/.build/
+/.venv/
+/build/
+/db/
+/out.txt
+/Testing/
+/tmp/
+CMakeSettings.json
+CMakeUserPresets.json

-# Ignore coverage files.
+# Coverage files.
 *.gcno
 *.gcda
 *.gcov

-# Ignore tmp directory.
-tmp
+# Profiling data.
+gmon.out

-# Ignore database directory.
-db/
-db/*.db
-db/*.db-*
+# Levelization data.
+.github/scripts/levelization/results/*
+!.github/scripts/levelization/results/loops.txt
+!.github/scripts/levelization/results/ordering.txt

-# Ignore debug logs
-debug_log.txt
+# Customized configs.
+/rippled.cfg
+/xrpld.cfg
+/validators.txt

-# Ignore customized configs
-rippled.cfg
-validators.txt
+# Locally patched Conan recipes
+external/conan-center-index/

-# Doxygen generated documentation output
-HtmlDocumentation
-docs/html_doc
+# Local conan directory
+.conan

-# Xcode user-specific project settings
-# Xcode
-.DS_Store
-*/build/*
+# XCode IDE.
 *.pbxuser
 !default.pbxuser
 *.mode1v3
@@ -69,26 +59,39 @@ xcuserdata
 profile
 *.moved-aside
 DerivedData
-.idea/
 *.hmap

-# Intel Parallel Studio 2013 XE
-My Amplifier XE Results - RippleD
+# JetBrains IDE.
+/.idea/

-# Compiler intermediate output
-/out.txt
+# Microsoft Visual Studio IDE.
+/.vs/
+/.vscode/

-# Build Log
-rippled-build.log
+# zed IDE.
+/.zed/

-# Profiling data
-gmon.out
+# AI tools.
+/.agent
+/.agents
+/.augment
+/.claude
+/CLAUDE.md

-Builds/VisualStudio2015/*.db
-Builds/VisualStudio2015/*.user
-Builds/VisualStudio2015/*.opendb
-Builds/VisualStudio2015/*.sdf
+# Python
+__pycache__

-# MSVC
-*.pdb
-.vs/
+# Rust build artifacts.
+target/
+
+# Direnv's directory
+/.direnv
+
+# clangd cache
+/.cache
+
+# Rust build directory
+crates/target
+
+# Env. file carrying environmental setup data for local or cloud runs.
+.env.*
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,9 +0,0 @@
-[submodule "src/nudb/extras/beast"]
-	path = src/nudb/extras/beast
-	url = https://github.com/vinniefalco/Beast.git
-[submodule "src/nudb/extras/rocksdb"]
-	path = src/nudb/extras/rocksdb
-	url = https://github.com/facebook/rocksdb.git
-[submodule "src/nudb/doc/docca"]
-	path = src/nudb/doc/docca
-	url = https://github.com/vinniefalco/docca.git
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,150 @@
+# To run pre-commit hooks, first install pre-commit:
+# - `pip install pre-commit==${PRE_COMMIT_VERSION}`
+#
+# Then, run the following command to install the git hook scripts:
+# - `pre-commit install`
+# You can run all configured hooks against all files with:
+# - `pre-commit run --all-files`
+# To manually run a specific hook, use:
+# - `pre-commit run <hook_id> --all-files`
+# To run the hooks against only the staged files, use:
+# - `pre-commit run`
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: 3e8a8703264a2f4a69428a0aa4dcb512790b2c8c # frozen: v6.0.0
+    hooks:
+      - id: check-added-large-files
+        args: [--maxkb=400, --enforce-all]
+      - id: check-executables-have-shebangs
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: check-merge-conflict
+        args: [--assume-in-merge]
+
+  - repo: local
+    hooks:
+      - id: clang-tidy
+        name: "clang-tidy (enable with: TIDY=1)"
+        entry: ./bin/pre-commit/clang_tidy_check.py
+        language: python
+        types_or: [c++, c]
+        # .ipp fragments are included by their owning header rather than compiled
+        # as standalone translation units, so they have no compile_commands.json
+        # entry to lint (verify_headers checks them transitively).
+        exclude: '^include/xrpl/protocol_autogen|\.ipp$'
+        # run-clang-tidy --fix may edit headers included by files it is not run on,
+        # so pre-commit must not split the files across parallel hook invocations.
+        # The script determines the staged files itself and lets run-clang-tidy
+        # handle parallelism internally.
+        pass_filenames: false
+      - id: fix-include-style
+        name: fix include style
+        entry: ./bin/pre-commit/fix_include_style.py
+        language: python
+        types_or: [c++, c]
+        exclude: ^include/xrpl/protocol_autogen/(transactions|ledger_entries)/
+      - id: fix-pragma-once
+        name: fix missing '#pragma once' declarations in header files
+        language: python
+        entry: ./bin/pre-commit/fix_pragma_once.py
+        files: \.(h|hpp)$
+      - id: check-doxygen-style
+        name: check Doxygen comment style
+        entry: ./bin/pre-commit/check_doxygen_style.py
+        language: python
+        types_or: [c++, c]
+
+  - repo: https://github.com/pre-commit/mirrors-clang-format
+    rev: f4d7745e17a28aad7eed2f4874ca8d1568c11c4c # frozen: v22.1.8
+    hooks:
+      - id: clang-format
+        args: [--style=file]
+        types_or: [c++, c, proto]
+        exclude: ^include/xrpl/protocol_autogen/(transactions|ledger_entries)/
+
+  - repo: local
+    hooks:
+      - id: cargo-fmt
+        name: cargo fmt
+        entry: cargo fmt --manifest-path crates/Cargo.toml --all
+        language: system
+        types: [rust]
+        pass_filenames: false # rustfmt formats the whole workspace
+
+  - repo: https://github.com/BlankSpruce/gersemi-pre-commit
+    rev: e98930bdc210d3387007f9252d8c1694ea7e410f # frozen: 0.27.7
+    hooks:
+      - id: gersemi
+
+  - repo: https://github.com/rbubley/mirrors-prettier
+    rev: 9337a74165b178ae2c766f60bee7252a0f06f3e8 # frozen: v3.9.5
+    hooks:
+      - id: prettier
+        args: [--end-of-line=auto]
+
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 4160603246a6b365d4a2af661c6d71b0a0f50478 # frozen: 26.5.1
+    hooks:
+      - id: black
+
+  - repo: https://github.com/scop/pre-commit-shfmt
+    rev: 05c1426671b9237fb5e1444dd63aa5731bec0dfb # frozen: v3.13.1-1
+    hooks:
+      - id: shfmt
+        args: [--write, --indent=4, --case-indent=true]
+
+  - repo: local
+    hooks:
+      - id: format-inline-bash-workflows
+        name: "format `run:` blocks in workflows/actions"
+        entry: ./.github/scripts/format-inline-bash.py
+        language: python
+        files: ^\.github/(workflows|actions)/.*\.ya?ml$
+      - id: format-inline-bash-markdown
+        name: "format ```bash blocks in markdown"
+        entry: ./.github/scripts/format-inline-bash.py
+        language: python
+        files: \.md$
+
+  - repo: https://github.com/streetsidesoftware/cspell-cli
+    rev: ea11f9efc0bec520073405bc30552da887ba71bc # frozen: v10.0.1
+    hooks:
+      - id: cspell
+        name: check changed files spelling
+        exclude: |
+          (?x)^(
+              \.cspell\.config\.yaml|
+              include/xrpl/protocol_autogen/(transactions|ledger_entries)/.*
+          )$
+      - id: cspell
+        name: check commit message spelling
+        args:
+          - --no-must-find-files
+          - --no-progress
+          - --no-summary
+        stages: [commit-msg]
+
+  - repo: local
+    hooks:
+      - id: nix-fmt
+        name: Format Nix files
+        entry: |
+          bash -c '
+            if command -v nix &> /dev/null || [ "$GITHUB_ACTIONS" = "true" ]; then
+              nix --extra-experimental-features "nix-command flakes" fmt "$@"
+            else
+              echo "Skipping nix-fmt: nix not installed and not in GitHub Actions"
+              exit 0
+            fi
+          ' --
+        language: system
+        types:
+          - nix
+        pass_filenames: true
+
+exclude: |
+  (?x)^(
+      external/.*|
+      .github/scripts/levelization/results/.*\.txt|
+      src/tests/libxrpl/protocol_autogen/(transactions|ledger_entries)/.*
+  )$
--- a/.prettierignore
+++ b/.prettierignore
@@ -0,0 +1 @@
+external
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,76 +0,0 @@
-sudo: false
-language: cpp
-
-env:
-  global:
-    # Maintenance note: to move to a new version
-    # of boost, update both BOOST_ROOT and BOOST_URL.
-    # Note that for simplicity, BOOST_ROOT's final
-    # namepart must match the folder name internal
-    # to boost's .tar.gz.
-    - LCOV_ROOT=$HOME/lcov
-    - GDB_ROOT=$HOME/gdb
-    - BOOST_ROOT=$HOME/boost_1_67_0
-    - BOOST_URL='http://sourceforge.net/projects/boost/files/boost/1.67.0/boost_1_67_0.tar.gz'
-
-addons:
-  apt:
-    sources:
-      - ubuntu-toolchain-r-test
-      - llvm-toolchain-trusty-5.0
-    packages:
-      - gcc-5
-      - g++-5
-      - python-software-properties
-      - protobuf-compiler
-      - libprotobuf-dev
-      - libssl-dev
-      - libstdc++6
-      - binutils-gold
-      - cmake
-      - lcov
-      - llvm-5.0
-      - clang-5.0
-
-matrix:
-  include:
-
-    - compiler: gcc
-      env: GCC_VER=5 TARGET=debug
-
-    # - compiler: gcc
-    #   env: GCC_VER=5 TARGET=debug.nounity
-
-    # - compiler: gcc
-    #   env: GCC_VER=5 TARGET=coverage PATH=$PWD/cmake/bin:$PATH
-
-    - compiler: clang
-      env: GCC_VER=5 TARGET=debug
-
-    # - compiler: clang
-    #   env: GCC_VER=5 TARGET=debug.nounity
-
-    # The clang cmake builds do not link.
-    # - compiler: clang
-    #   env: GCC_VER=5  TARGET=debug CLANG_VER=3.8 PATH=$PWD/llvm-$LLVM_VERSION/bin:$PWD/cmake/bin:$PATH
-
-    # - compiler: clang
-    #   env: GCC_VER=5 TARGET=debug.nounity CLANG_VER=3.8 PATH=$PWD/llvm-$LLVM_VERSION/bin:$PWD/cmake/bin:$PATH
-
-cache:
-  directories:
-  - $BOOST_ROOT
-
-before_install:
-  - bin/ci/ubuntu/install-dependencies.sh
-
-script:
-  - travis_retry bin/ci/ubuntu/build-and-test.sh
-
-notifications:
-  email:
-    false
-  irc:
-    channels:
-      - "chat.freenode.net#ripple-dev"
-
--- a/API-CHANGELOG.md
+++ b/API-CHANGELOG.md
@@ -0,0 +1,268 @@
+# API Changelog
+
+This changelog is intended to list all updates to the [public API methods](https://xrpl.org/public-api-methods.html).
+
+For info about how [API versioning](https://xrpl.org/request-formatting.html#api-versioning) works, including examples, please view the [XLS-22d spec](https://github.com/XRPLF/XRPL-Standards/discussions/54). For details about the implementation of API versioning, view the [implementation PR](https://github.com/XRPLF/rippled/pull/3155). API versioning ensures existing integrations and users continue to receive existing behavior, while those that request a higher API version will experience new behavior.
+
+The API version controls the API behavior you see. This includes what properties you see in responses, what parameters you're permitted to send in requests, and so on. You specify the API version in each of your requests. When a breaking change is introduced to the `xrpld` API, a new version is released. To avoid breaking your code, you should set (or increase) your version when you're ready to upgrade.
+
+The [commandline](https://xrpl.org/docs/references/http-websocket-apis/api-conventions/request-formatting/#commandline-format) always uses the latest API version. The command line is intended for ad-hoc usage by humans, not programs or automated scripts. The command line is not meant for use in production code.
+
+For a log of breaking changes, see the **API Version [number]** headings. In general, breaking changes are associated with a particular API Version number. For non-breaking changes, scroll to the **XRP Ledger version [x.y.z]** headings. Non-breaking changes are associated with a particular XRP Ledger (`xrpld`) release.
+
+## API Version 3 (Beta)
+
+API version 3 is currently a beta API. It requires enabling `[beta_rpc_api]` in the xrpld configuration to use. See [API-VERSION-3.md](API-VERSION-3.md) for the full list of changes in API version 3.
+
+## API Version 2
+
+API version 2 is available in `xrpld` version 2.0.0 and later. See [API-VERSION-2.md](API-VERSION-2.md) for the full list of changes in API version 2.
+
+## API Version 1
+
+This version is supported by all `xrpld` versions. For WebSocket and HTTP JSON-RPC requests, it is currently the default API version used when no `api_version` is specified.
+
+## Unreleased
+
+This section contains changes targeting a future version.
+
+### Additions
+
+- `account_tx`: Added an optional `delegate` request object to filter delegated transactions. The object requires `delegate_filter`, which must be either `actor` for transactions owned by the requested account but signed by another account, or `authorizer` for transactions signed by the requested account on behalf of another account. The optional `counter_party` account narrows the results to a specific signer/delegate for `actor` or a specific owner/delegator for `authorizer`. Malformed `delegate`, `delegate_filter`, and `counter_party` values return standard invalid field errors, and invalid account IDs return `actMalformed`.
+  When paginating delegate-filtered queries, a marker from a delegate-filtered query includes a `delegate` flag and is only valid for follow-up requests that also supply `delegate` (mixing marker conventions returns `invalidParams`). Because filtering is applied after the ledger scan, a page may contain fewer results than `limit` (possibly zero) while still returning a marker, so callers must continue until no marker is present.
+
+- `ledger_entry`, `account_objects`: The `Delegate` ledger entry now includes an optional `DestinationNode` field, which stores the index into the authorized account's owner directory. This field is present on entries created after bidirectional directory tracking was introduced and may appear in RPC responses for those entries. ([#6681](https://github.com/XRPLF/rippled/pull/6681))
+
+- `server_definitions`: Added the following new sections to the response ([#6321](https://github.com/XRPLF/rippled/pull/6321)):
+  - `TRANSACTION_FORMATS`: Describes the fields and their optionality for each transaction type, including common fields shared across all transactions.
+  - `LEDGER_ENTRY_FORMATS`: Describes the fields and their optionality for each ledger entry type, including common fields shared across all ledger entries.
+  - `TRANSACTION_FLAGS`: Maps transaction type names to their supported flags and flag values.
+  - `LEDGER_ENTRY_FLAGS`: Maps ledger entry type names to their flags and flag values.
+  - `ACCOUNT_SET_FLAGS`: Maps AccountSet flag names (asf flags) to their numeric values.
+
+### Bugfixes
+
+- `get_aggregate_price`: Duplicate entries in the `oracles` request array are now ignored. [#6586](https://github.com/XRPLF/rippled/pull/6586)
+- Peer Crawler: The `port` field in `overlay.active[]` now consistently returns an integer instead of a string for outbound peers. [#6318](https://github.com/XRPLF/rippled/pull/6318)
+- `ping`: The `ip` field is no longer returned as an empty string for proxied connections without a forwarded-for header. It is now omitted, consistent with the behavior for identified connections. [#6730](https://github.com/XRPLF/rippled/pull/6730)
+- gRPC `GetLedgerDiff`: Fixed error message that incorrectly said "base ledger not validated" when the desired ledger was not validated. [#6730](https://github.com/XRPLF/rippled/pull/6730)
+- `account_channels`: The `destination_account` field now returns an error if the value is not a string. [#6529](https://github.com/XRPLF/rippled/pull/6529)
+- `subscribe`: The `taker` field in the `books` array now returns an error if the value is not a string. [#6529](https://github.com/XRPLF/rippled/pull/6529)
+- `account_info`: The `urlgravatar` field now uses HTTPS instead of HTTP. [#6529](https://github.com/XRPLF/rippled/pull/6529)
+- `ledger`: The `full`, `accounts`, `transactions`, `expand`, `binary`, `owner_funds`, and `queue` fields now return an error if the value is not a boolean. [#6529](https://github.com/XRPLF/rippled/pull/6529)
+- `ledger_data`: The `binary` field now returns an error if the value is not a boolean. [#6529](https://github.com/XRPLF/rippled/pull/6529)
+- `submit`: The `fail_hard` field now returns an error if the value is not a boolean. [#6529](https://github.com/XRPLF/rippled/pull/6529)
+- `subscribe`: The `taker` field in the `books` array now returns `actMalformed` instead of `badIssuer` if the value is not a valid account. [#6529](https://github.com/XRPLF/rippled/pull/6529)
+- Fixed a bug in `Forwarded` HTTP header parsing where the extracted IP address could be incorrect when no comma or semicolon delimiter follows the address. This could cause the server to misidentify a client's IP address when operating behind a reverse proxy. [#6529](https://github.com/XRPLF/rippled/pull/6529)
+- `gateway_balances`: The `account` and `ident` fields now return an `invalidParams` error if the value is not a string, instead of an `internal` error. [#7655](https://github.com/XRPLF/rippled/pull/7655)
+- `account_lines`: The `peer` field now returns an error if the value is not a string. [#7728](https://github.com/XRPLF/rippled/pull/7728)
+
+## XRP Ledger server version 3.1.0
+
+[Version 3.1.0](https://github.com/XRPLF/rippled/releases/tag/3.1.0) was released on Jan 27, 2026.
+
+### Additions in 3.1.0
+
+- `vault_info`: New RPC method to retrieve information about a specific vault (part of XLS-66 Lending Protocol). ([#6156](https://github.com/XRPLF/rippled/pull/6156))
+
+## XRP Ledger server version 3.0.0
+
+[Version 3.0.0](https://github.com/XRPLF/rippled/releases/tag/3.0.0) was released on Dec 9, 2025.
+
+### Additions in 3.0.0
+
+- `ledger_entry`: Supports all ledger entry types with dedicated parsers. ([#5237](https://github.com/XRPLF/rippled/pull/5237))
+- `ledger_entry`: New error codes `entryNotFound` and `unexpectedLedgerType` for more specific error handling. ([#5237](https://github.com/XRPLF/rippled/pull/5237))
+- `ledger_entry`: Improved error messages with more context (e.g., specifying which field is invalid or missing). ([#5237](https://github.com/XRPLF/rippled/pull/5237))
+- `ledger_entry`: Assorted bug fixes in RPC processing. ([#5237](https://github.com/XRPLF/rippled/pull/5237))
+- `simulate`: Supports additional metadata in the response. ([#5754](https://github.com/XRPLF/rippled/pull/5754))
+
+## XRP Ledger server version 2.6.2
+
+[Version 2.6.2](https://github.com/XRPLF/rippled/releases/tag/2.6.2) was released on Nov 19, 2025.
+
+This release contains bug fixes only and no API changes.
+
+## XRP Ledger server version 2.6.1
+
+[Version 2.6.1](https://github.com/XRPLF/rippled/releases/tag/2.6.1) was released on Sep 30, 2025.
+
+This release contains bug fixes only and no API changes.
+
+## XRP Ledger server version 2.6.0
+
+[Version 2.6.0](https://github.com/XRPLF/rippled/releases/tag/2.6.0) was released on Aug 27, 2025.
+
+### Additions in 2.6.0
+
+- `account_info`: Added `allowTrustLineLocking` flag in response. ([#5525](https://github.com/XRPLF/rippled/pull/5525))
+- `ledger`: Removed the type filter from the RPC command. ([#4934](https://github.com/XRPLF/rippled/pull/4934))
+- `subscribe` (`validations` stream): `network_id` is now included. ([#5579](https://github.com/XRPLF/rippled/pull/5579))
+- `subscribe` (`transactions` stream): `nftoken_id`, `nftoken_ids`, and `offer_id` are now included in transaction metadata. ([#5230](https://github.com/XRPLF/rippled/pull/5230))
+
+## XRP Ledger server version 2.5.1
+
+[Version 2.5.1](https://github.com/XRPLF/rippled/releases/tag/2.5.1) was released on Sep 17, 2025.
+
+This release contains bug fixes only and no API changes.
+
+## XRP Ledger server version 2.5.0
+
+[Version 2.5.0](https://github.com/XRPLF/rippled/releases/tag/2.5.0) was released on Jun 24, 2025.
+
+### Additions and bugfixes in 2.5.0
+
+- `tx`: Added `ctid` field to the response and improved error handling. ([#4738](https://github.com/XRPLF/rippled/pull/4738))
+- `ledger_entry`: Improved error messages in `permissioned_domain`. ([#5344](https://github.com/XRPLF/rippled/pull/5344))
+- `simulate`: Improved multi-sign usage. ([#5479](https://github.com/XRPLF/rippled/pull/5479))
+- `channel_authorize`: If `signing_support` is not enabled in the config, the RPC is disabled. ([#5385](https://github.com/XRPLF/rippled/pull/5385))
+- `subscribe` (admin): Removed webhook queue limit to prevent dropping notifications; reduced HTTP timeout from 10 minutes to 30 seconds. ([#5163](https://github.com/XRPLF/rippled/pull/5163))
+- `ledger_data` (gRPC): Fixed crashing issue with some invalid markers. ([#5137](https://github.com/XRPLF/rippled/pull/5137))
+- `account_lines`: Fixed error with `no_ripple` and `no_ripple_peer` sometimes showing up incorrectly. ([#5345](https://github.com/XRPLF/rippled/pull/5345))
+- `account_tx`: Fixed issue with incorrect CTIDs. ([#5408](https://github.com/XRPLF/rippled/pull/5408))
+
+## XRP Ledger server version 2.4.0
+
+[Version 2.4.0](https://github.com/XRPLF/rippled/releases/tag/2.4.0) was released on March 4, 2025.
+
+### Additions and bugfixes in 2.4.0
+
+- `simulate`: A new RPC that executes a [dry run of a transaction submission](https://github.com/XRPLF/XRPL-Standards/tree/master/XLS-0069d-simulate#2-rpc-simulate). ([#5069](https://github.com/XRPLF/rippled/pull/5069))
+- Signing methods (`sign`, `sign_for`, `submit`): Autofill fees better, properly handle transactions without a base fee, and autofill the `NetworkID` field. ([#5069](https://github.com/XRPLF/rippled/pull/5069))
+- `ledger_entry`: `state` is added as an alias for `ripple_state`. ([#5199](https://github.com/XRPLF/rippled/pull/5199))
+- `ledger`, `ledger_data`, `account_objects`: Support filtering ledger entry types by their canonical names (case-insensitive). ([#5271](https://github.com/XRPLF/rippled/pull/5271))
+- `validators`: Added new field `validator_list_threshold` in response. ([#5112](https://github.com/XRPLF/rippled/pull/5112))
+- `server_info`: Added git commit hash info on admin connection. ([#5225](https://github.com/XRPLF/rippled/pull/5225))
+- `server_definitions`: Changed larger `UInt` serialized types to `Hash`. ([#5231](https://github.com/XRPLF/rippled/pull/5231))
+
+## XRP Ledger server version 2.3.1
+
+[Version 2.3.1](https://github.com/XRPLF/rippled/releases/tag/2.3.1) was released on Jan 29, 2025.
+
+This release contains bug fixes only and no API changes.
+
+## XRP Ledger server version 2.3.0
+
+[Version 2.3.0](https://github.com/XRPLF/rippled/releases/tag/2.3.0) was released on Nov 25, 2024.
+
+### Breaking changes in 2.3.0
+
+- `book_changes`: If the requested ledger version is not available on this node, a `ledgerNotFound` error is returned and the node does not attempt to acquire the ledger from the p2p network (as with other non-admin RPCs). Admins can still attempt to retrieve old ledgers with the `ledger_request` RPC.
+
+### Additions and bugfixes in 2.3.0
+
+- `book_changes`: Returns a `validated` field in its response. ([#5096](https://github.com/XRPLF/rippled/pull/5096))
+- `book_changes`: Accepts shortcut strings (`current`, `closed`, `validated`) for the `ledger_index` parameter. ([#5096](https://github.com/XRPLF/rippled/pull/5096))
+- `server_definitions`: Include `index` in response. ([#5190](https://github.com/XRPLF/rippled/pull/5190))
+- `account_nfts`: Fix issue where unassociated marker would return incorrect results. ([#5045](https://github.com/XRPLF/rippled/pull/5045))
+- `account_objects`: Fix issue where invalid marker would not return an error. ([#5046](https://github.com/XRPLF/rippled/pull/5046))
+- `account_objects`: Disallow filtering by ledger entry types that an account cannot hold. ([#5056](https://github.com/XRPLF/rippled/pull/5056))
+- `tx`: Allow lowercase CTID. ([#5049](https://github.com/XRPLF/rippled/pull/5049))
+- `feature`: Better error handling for invalid values of `feature`. ([#5063](https://github.com/XRPLF/rippled/pull/5063))
+
+## XRP Ledger server version 2.2.0
+
+[Version 2.2.0](https://github.com/XRPLF/rippled/releases/tag/2.2.0) was released on Jun 5, 2024. The following additions are non-breaking (because they are purely additive):
+
+- `feature`: Add a non-admin mode for users. (It was previously only available to admin connections.) The method returns an updated list of amendments, including their names and other information. ([#4781](https://github.com/XRPLF/rippled/pull/4781))
+
+## XRP Ledger server version 2.0.1
+
+[Version 2.0.1](https://github.com/XRPLF/rippled/releases/tag/2.0.1) was released on Jan 29, 2024. The following additions are non-breaking:
+
+- `path_find`: Fixes unbounded memory growth. ([#4822](https://github.com/XRPLF/rippled/pull/4822))
+
+## XRP Ledger server version 2.0.0
+
+[Version 2.0.0](https://github.com/XRPLF/rippled/releases/tag/2.0.0) was released on Jan 9, 2024. The following additions are non-breaking (because they are purely additive):
+
+- `server_definitions`: A new RPC that generates a `definitions.json`-like output that can be used in XRPL libraries.
+- In `Payment` transactions, `DeliverMax` has been added. This is a replacement for the `Amount` field, which should not be used. Typically, the `delivered_amount` (in transaction metadata) should be used. To ease the transition, `DeliverMax` is present regardless of API version, since adding a field is non-breaking.
+- API version 2 has been moved from beta to supported, meaning that it is generally available (regardless of the `beta_rpc_api` setting). The full list of changes is in [API-VERSION-2.md](API-VERSION-2.md).
+
+## XRP Ledger server version 1.12.0
+
+[Version 1.12.0](https://github.com/XRPLF/rippled/releases/tag/1.12.0) was released on Sep 6, 2023. The following additions are non-breaking (because they are purely additive):
+
+- `server_info`: Added `ports`, an array which advertises the RPC and WebSocket ports. This information is also included in the `/crawl` endpoint (which calls `server_info` internally). `grpc` and `peer` ports are also included. ([#4427](https://github.com/XRPLF/rippled/pull/4427))
+  - `ports` contains objects, each containing a `port` for the listening port (a number string), and a `protocol` array listing the supported protocols on that port.
+  - This allows crawlers to build a more detailed topology without needing to port-scan nodes.
+  - (For peers and other non-admin clients, the info about admin ports is excluded.)
+- Clawback: The following additions are gated by the Clawback amendment (`featureClawback`). ([#4553](https://github.com/XRPLF/rippled/pull/4553))
+  - Adds an [AccountRoot flag](https://xrpl.org/accountroot.html#accountroot-flags) called `lsfAllowTrustLineClawback`. ([#4617](https://github.com/XRPLF/rippled/pull/4617))
+    - Adds the corresponding `asfAllowTrustLineClawback` [AccountSet Flag](https://xrpl.org/accountset.html#accountset-flags) as well.
+    - Clawback is disabled by default, so if an issuer desires the ability to claw back funds, they must use an `AccountSet` transaction to set the AllowTrustLineClawback flag. They must do this before creating any trust lines, offers, escrows, payment channels, or checks.
+  - Adds the [Clawback transaction type](https://github.com/XRPLF/XRPL-Standards/blob/master/XLS-39d-clawback/README.md#331-clawback-transaction), containing these fields:
+    - `Account`: The issuer of the asset being clawed back. Must also be the sender of the transaction.
+    - `Amount`: The amount being clawed back, with the `Amount.issuer` being the token holder's address.
+- Adds [AMM](https://github.com/XRPLF/XRPL-Standards/discussions/78) ([#4294](https://github.com/XRPLF/rippled/pull/4294), [#4626](https://github.com/XRPLF/rippled/pull/4626)) feature:
+  - Adds `amm_info` API to retrieve AMM information for a given tokens pair.
+  - Adds `AMMCreate` transaction type to create `AMM` instance.
+  - Adds `AMMDeposit` transaction type to deposit funds into `AMM` instance.
+  - Adds `AMMWithdraw` transaction type to withdraw funds from `AMM` instance.
+  - Adds `AMMVote` transaction type to vote for the trading fee of `AMM` instance.
+  - Adds `AMMBid` transaction type to bid for the Auction Slot of `AMM` instance.
+  - Adds `AMMDelete` transaction type to delete `AMM` instance.
+  - Adds `sfAMMID` to `AccountRoot` to indicate that the account is `AMM`'s account. `AMMID` is used to fetch `ltAMM`.
+  - Adds `lsfAMMNode` `TrustLine` flag to indicate that one side of the `TrustLine` is `AMM` account.
+  - Adds `tfLPToken`, `tfSingleAsset`, `tfTwoAsset`, `tfOneAssetLPToken`, `tfLimitLPToken`, `tfTwoAssetIfEmpty`,
+    `tfWithdrawAll`, `tfOneAssetWithdrawAll` which allow a trader to specify different fields combination
+    for `AMMDeposit` and `AMMWithdraw` transactions.
+  - Adds new transaction result codes:
+    - tecUNFUNDED_AMM: insufficient balance to fund AMM. The account does not have funds for liquidity provision.
+    - tecAMM_BALANCE: AMM has invalid balance. Calculated balances greater than the current pool balances.
+    - tecAMM_FAILED: AMM transaction failed. Fails due to a processing failure.
+    - tecAMM_INVALID_TOKENS: AMM invalid LP tokens. Invalid input values, format, or calculated values.
+    - tecAMM_EMPTY: AMM is in empty state. Transaction requires AMM in non-empty state (LP tokens > 0).
+    - tecAMM_NOT_EMPTY: AMM is not in empty state. Transaction requires AMM in empty state (LP tokens == 0).
+    - tecAMM_ACCOUNT: AMM account. Clawback of AMM account.
+    - tecINCOMPLETE: Some work was completed, but more submissions required to finish. AMMDelete partially deletes the trustlines.
+
+## XRP Ledger server version 1.11.0
+
+[Version 1.11.0](https://github.com/XRPLF/rippled/releases/tag/1.11.0) was released on Jun 20, 2023.
+
+### Breaking changes in 1.11
+
+- Added the ability to mark amendments as obsolete. For the `feature` admin API, there is a new possible value for the `vetoed` field. ([#4291](https://github.com/XRPLF/rippled/pull/4291))
+  - The value of `vetoed` can now be `true`, `false`, or `"Obsolete"`.
+- Removed the acceptance of seeds or public keys in place of account addresses. ([#4404](https://github.com/XRPLF/rippled/pull/4404))
+  - This simplifies the API and encourages better security practices (i.e. seeds should never be sent over the network).
+- For the `ledger_data` method, when all entries are filtered out, the `state` field of the response is now an empty list (in other words, an empty array, `[]`). (Previously, it would return `null`.) While this is technically a breaking change, the new behavior is consistent with the documentation, so this is considered only a bug fix. ([#4398](https://github.com/XRPLF/rippled/pull/4398))
+- If and when the `fixNFTokenRemint` amendment activates, there will be a new AccountRoot field, `FirstNFTSequence`. This field is set to the current account sequence when the account issues their first NFT. If an account has not issued any NFTs, then the field is not set. ([#4406](https://github.com/XRPLF/rippled/pull/4406))
+  - There is a new account deletion restriction: an account can only be deleted if `FirstNFTSequence` + `MintedNFTokens` + `256` is less than the current ledger sequence.
+  - This is potentially a breaking change if clients have logic for determining whether an account can be deleted.
+- NetworkID
+  - For sidechains and networks with a network ID greater than 1024, there is a new [transaction common field](https://xrpl.org/transaction-common-fields.html), `NetworkID`. ([#4370](https://github.com/XRPLF/rippled/pull/4370))
+    - This field helps to prevent replay attacks and is now required for chains whose network ID is 1025 or higher.
+    - The field must be omitted for Mainnet, so there is no change for Mainnet users.
+  - There are three new local error codes:
+    - `telNETWORK_ID_MAKES_TX_NON_CANONICAL`: a `NetworkID` is present but the chain's network ID is less than 1025. Remove the field from the transaction, and try again.
+    - `telREQUIRES_NETWORK_ID`: a `NetworkID` is required, but is not present. Add the field to the transaction, and try again.
+    - `telWRONG_NETWORK`: a `NetworkID` is specified, but it is for a different network. Submit the transaction to a different server which is connected to the correct network.
+
+### Additions and bug fixes in 1.11
+
+- Added `nftoken_id`, `nftoken_ids` and `offer_id` meta fields into NFT `tx` and `account_tx` responses. ([#4447](https://github.com/XRPLF/rippled/pull/4447))
+- Added an `account_flags` object to the `account_info` method response. ([#4459](https://github.com/XRPLF/rippled/pull/4459))
+- Added `NFTokenPages` to the `account_objects` RPC. ([#4352](https://github.com/XRPLF/rippled/pull/4352))
+- Fixed: `marker` returned from the `account_lines` command would not work on subsequent commands. ([#4361](https://github.com/XRPLF/rippled/pull/4361))
+
+## XRP Ledger server version 1.10.0
+
+[Version 1.10.0](https://github.com/XRPLF/rippled/releases/tag/1.10.0)
+was released on Mar 14, 2023.
+
+### Breaking changes in 1.10
+
+- If the `XRPFees` feature is enabled, the `fee_ref` field will be
+  removed from the [ledger subscription stream](https://xrpl.org/subscribe.html#ledger-stream), because it will no longer
+  have any meaning.
+
+# Unit tests for API changes
+
+The following information is useful to developers contributing to this project:
+
+The purpose of unit tests is to catch bugs and prevent regressions. In general, it often makes sense to create a test function when there is a breaking change to the API. For APIs that have changed in a new API version, the tests should be modified so that both the prior version and the new version are properly tested.
+
+To take one example: for `account_info` version 1, WebSocket and JSON-RPC behavior should be tested. The latest API version, i.e. API version 2, should be tested over WebSocket, JSON-RPC, and command line.
--- a/API-VERSION-2.md
+++ b/API-VERSION-2.md
@@ -0,0 +1,66 @@
+# API Version 2
+
+API version 2 is available in `xrpld` version 2.0.0 and later. To use this API, clients specify `"api_version" : 2` in each request.
+
+For info about how [API versioning](https://xrpl.org/request-formatting.html#api-versioning) works, including examples, please view the [XLS-22d spec](https://github.com/XRPLF/XRPL-Standards/discussions/54). For details about the implementation of API versioning, view the [implementation PR](https://github.com/XRPLF/rippled/pull/3155). API versioning ensures existing integrations and users continue to receive existing behavior, while those that request a higher API version will experience new behavior.
+
+## Removed methods
+
+In API version 2, the following deprecated methods are no longer available: ([#4759](https://github.com/XRPLF/rippled/pull/4759))
+
+- `tx_history` - Instead, use other methods such as `account_tx` or `ledger` with the `transactions` field set to `true`.
+- `ledger_header` - Instead, use the `ledger` method.
+
+## Modifications to JSON transaction element in API version 2
+
+In API version 2, JSON elements for transaction output have been changed and made consistent for all methods which output transactions. ([#4775](https://github.com/XRPLF/rippled/pull/4775))
+This helps to unify the JSON serialization format of transactions. ([clio#722](https://github.com/XRPLF/clio/issues/722), [#4727](https://github.com/XRPLF/rippled/issues/4727))
+
+- JSON transaction element is named `tx_json`
+- Binary transaction element is named `tx_blob`
+- JSON transaction metadata element is named `meta`
+- Binary transaction metadata element is named `meta_blob`
+
+Additionally, these elements are now consistently available next to `tx_json` (i.e. sibling elements), where possible:
+
+- `hash` - Transaction ID. This data was stored inside transaction output in API version 1, but in API version 2 is a sibling element.
+- `ledger_index` - Ledger index (only set on validated ledgers)
+- `ledger_hash` - Ledger hash (only set on closed or validated ledgers)
+- `close_time_iso` - Ledger close time expressed in ISO 8601 time format (only set on validated ledgers)
+- `validated` - Bool element set to `true` if the transaction is in a validated ledger, otherwise `false`
+
+This change affects the following methods:
+
+- `tx` - Transaction data moved into element `tx_json` (was inline inside `result`) or, if binary output was requested, moved from `tx` to `tx_blob`. Renamed binary transaction metadata element (if it was requested) from `meta` to `meta_blob`. Changed location of `hash` and added new elements
+- `account_tx` - Renamed transaction element from `tx` to `tx_json`. Renamed binary transaction metadata element (if it was requested) from `meta` to `meta_blob`. Changed location of `hash` and added new elements
+- `transaction_entry` - Renamed transaction metadata element from `metadata` to `meta`. Changed location of `hash` and added new elements
+- `subscribe` - Renamed transaction element from `transaction` to `tx_json`. Changed location of `hash` and added new elements
+- `sign`, `sign_for`, `submit` and `submit_multisigned` - Changed location of `hash` element.
+
+## Modifications to `Payment` transaction JSON schema
+
+When reading Payments, the `Amount` field should generally **not** be used. Instead, use [delivered_amount](https://xrpl.org/partial-payments.html#the-delivered_amount-field) to see the amount that the Payment delivered. To clarify its meaning, the `Amount` field is being renamed to `DeliverMax`. ([#4733](https://github.com/XRPLF/rippled/pull/4733))
+
+- In `Payment` transaction type, JSON RPC field `Amount` is renamed to `DeliverMax`. To enable smooth client transition, `Amount` is still handled, as described below: ([#4733](https://github.com/XRPLF/rippled/pull/4733))
+  - On JSON RPC input (e.g. `submit_multisigned` etc. methods), `Amount` is recognized as an alias to `DeliverMax` for both API version 1 and version 2 clients.
+  - On JSON RPC input, submitting both `Amount` and `DeliverMax` fields is allowed _only_ if they are identical; otherwise such input is rejected with `rpcINVALID_PARAMS` error.
+  - On JSON RPC output (e.g. `subscribe`, `account_tx` etc. methods), `DeliverMax` is present in both API version 1 and version 2.
+  - On JSON RPC output, `Amount` is only present in API version 1 and _not_ in version 2.
+
+## Modifications to account_info response
+
+- `signer_lists` is returned in the root of the response. (In API version 1, it was nested under `account_data`.) ([#3770](https://github.com/XRPLF/rippled/pull/3770))
+- When using an invalid `signer_lists` value, the API now returns an "invalidParams" error. ([#4585](https://github.com/XRPLF/rippled/pull/4585))
+  - (`signer_lists` must be a boolean. In API version 1, strings were accepted and may return a normal response - i.e. as if `signer_lists` were `true`.)
+
+## Modifications to [account_tx](https://xrpl.org/account_tx.html#account_tx) response
+
+- Using `ledger_index_min`, `ledger_index_max`, and `ledger_index` returns `invalidParams` because if you use `ledger_index_min` or `ledger_index_max`, then it does not make sense to also specify `ledger_index`. In API version 1, no error was returned. ([#4571](https://github.com/XRPLF/rippled/pull/4571))
+  - The same applies for `ledger_index_min`, `ledger_index_max`, and `ledger_hash`. ([#4545](https://github.com/XRPLF/rippled/issues/4545#issuecomment-1565065579))
+- Using a `ledger_index_min` or `ledger_index_max` beyond the range of ledgers that the server has:
+  - returns `lgrIdxMalformed` in API version 2. Previously, in API version 1, no error was returned. ([#4288](https://github.com/XRPLF/rippled/issues/4288))
+- Attempting to use a non-boolean value (such as a string) for the `binary` or `forward` parameters returns `invalidParams` (`rpcINVALID_PARAMS`). Previously, in API version 1, no error was returned. ([#4620](https://github.com/XRPLF/rippled/pull/4620))
+
+## Modifications to [noripple_check](https://xrpl.org/noripple_check.html#noripple_check) response
+
+- Attempting to use a non-boolean value (such as a string) for the `transactions` parameter returns `invalidParams` (`rpcINVALID_PARAMS`). Previously, in API version 1, no error was returned. ([#4620](https://github.com/XRPLF/rippled/pull/4620))
--- a/API-VERSION-3.md
+++ b/API-VERSION-3.md
@@ -0,0 +1,27 @@
+# API Version 3
+
+API version 3 is currently a **beta API**. It requires enabling `[beta_rpc_api]` in the xrpld configuration to use. To use this API, clients specify `"api_version" : 3` in each request.
+
+For info about how [API versioning](https://xrpl.org/request-formatting.html#api-versioning) works, including examples, please view the [XLS-22d spec](https://github.com/XRPLF/XRPL-Standards/discussions/54). For details about the implementation of API versioning, view the [implementation PR](https://github.com/XRPLF/rippled/pull/3155). API versioning ensures existing integrations and users continue to receive existing behavior, while those that request a higher API version will experience new behavior.
+
+## Breaking Changes
+
+### Modifications to `amm_info`
+
+The order of error checks has been changed to provide more specific error messages. ([#4924](https://github.com/XRPLF/rippled/pull/4924))
+
+- **Before (API v2)**: When sending an invalid account or asset to `amm_info` while other parameters are not set as expected, the method returns a generic `rpcINVALID_PARAMS` error.
+- **After (API v3)**: The same scenario returns a more specific error: `rpcISSUE_MALFORMED` for malformed assets or `rpcACT_MALFORMED` for malformed accounts.
+
+### Modifications to `ledger_entry`
+
+Added support for string shortcuts to look up fixed-location ledger entries using the `"index"` parameter. ([#5644](https://github.com/XRPLF/rippled/pull/5644))
+
+In API version 3, the following string values can be used with the `"index"` parameter:
+
+- `"index": "amendments"` - Returns the `Amendments` ledger entry
+- `"index": "fee"` - Returns the `FeeSettings` ledger entry
+- `"index": "nunl"` - Returns the `NegativeUNL` ledger entry
+- `"index": "hashes"` - Returns the "short" `LedgerHashes` ledger entry (recent ledger hashes)
+
+These shortcuts are only available in API version 3 and later. In API versions 1 and 2, these string values would result in an error.
--- a/BUILD.md
+++ b/BUILD.md
@@ -0,0 +1,419 @@
+| :warning: **WARNING** :warning:                                                                                                                                                                                                                                                                                                                                                                                                                                               |
+| ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| These instructions assume you have a C++ development environment ready with Git, Python, Conan, CMake, and a C++ compiler. For help setting one up on Linux, macOS, or Windows, [see this guide](./docs/build/environment.md).<br><br>These instructions also assume a basic familiarity with Conan and CMake. If you are unfamiliar with Conan, you can read our [crash course](./docs/build/conan.md) or the official [Getting Started][conan-getting-started] walkthrough. |
+
+## Minimum Requirements
+
+For the hardware needed to run a node, see
+[System Requirements](https://xrpl.org/system-requirements.html).
+
+For the software needed to build xrpld, see the
+[environment setup guide](./docs/build/environment.md).
+
+## Operating Systems
+
+### Linux
+
+The Ubuntu Linux distribution has received the highest level of quality
+assurance, testing, and support. We also support Red Hat and use Debian
+internally.
+Our Linux CI tooling is distro-independent and uses a Nix-based environment, so it should be possible to build on other Linux distributions as well, although we have not tested them.
+
+### macOS
+
+Many `xrpld` engineers use macOS for development.
+The minimum supported version is macOS 15 (Sequoia).
+CI testing is done in macOS 26 (Tahoe), but the build defaults `CMAKE_OSX_DEPLOYMENT_TARGET` to 15.
+
+### Windows
+
+Windows is used by some engineers for development only, and is not recommended
+for production use.
+
+## Steps
+
+### Branches
+
+For the latest set of untested features, or to contribute, choose the `develop`
+branch.
+
+```bash
+git checkout develop
+```
+
+For a release candidate, choose the relevant release branch, e.g.
+`release/3.2.x`.
+
+```bash
+git checkout release/3.2.x
+```
+
+For a stable release, choose one of the [tagged
+releases](https://github.com/XRPLF/rippled/releases).
+
+### Set Up Conan
+
+Once your [development environment](./docs/build/environment.md) is ready, set
+Conan up for this repository:
+
+```bash
+./conan/init.sh
+```
+
+That installs our [`global.conf`](./conan/global.conf), our Conan
+[profiles](./conan/profiles), and the `xrplf` remote that hosts some of our
+dependencies. It honours `CONAN_HOME` and never deletes an existing Conan home,
+so it is safe to re-run — it only overwrites the files it manages.
+
+> [!TIP]
+> In the [Nix development shell](./docs/build/nix.md#conan-configuration) this is
+> already done for you: the script runs on entry.
+
+You can inspect the resulting profile with `conan profile show`. If it is not
+suitable for your environment, create a custom profile and pass it to Conan — see
+[Advanced Conan configuration](./docs/build/advanced_conan.md).
+
+### Set Up Ccache
+
+To speed up repeated compilations, we recommend that you install
+[ccache](https://ccache.dev), a tool that wraps your compiler so that it can
+cache build objects locally.
+
+On Linux and macOS, `ccache` is included in the [Nix development shell](./docs/build/nix.md).
+
+#### Windows
+
+You can install it using Chocolatey, i.e. `choco install ccache`. If you already
+have Ccache installed, then `choco upgrade ccache` will update it to the latest
+version. However, if you see an error such as:
+
+```
+terminate called after throwing an instance of 'std::bad_alloc'
+      what():  std::bad_alloc
+C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Microsoft\VC\v170\Microsoft.CppCommon.targets(617,5): error MSB6006: "cl.exe" exited with code 3.
+```
+
+then please install a specific version of Ccache that we know works, via: `choco
+install ccache --version 4.11.3 --allow-downgrade`.
+
+### Build and Test
+
+1. Create a build directory and move into it.
+
+   ```
+   mkdir .build
+   cd .build
+   ```
+
+   You can use any directory name. Conan treats your working directory as an
+   install folder and generates files with implementation details.
+   You don't need to worry about these files, but make sure to change
+   your working directory to your build directory before calling Conan.
+
+   **Note:** You can specify a directory for the installation files by adding
+   the `install-folder` or `-if` option to every `conan install` command
+   in the next step.
+
+2. Use conan to generate CMake files for every configuration you want to build:
+
+   ```
+   conan install .. --output-folder . --build missing --settings build_type=Release
+   conan install .. --output-folder . --build missing --settings build_type=Debug
+   ```
+
+   To build Debug, in the next step, be sure to set `-DCMAKE_BUILD_TYPE=Debug`
+
+   For a single-configuration generator, e.g. `Unix Makefiles` or `Ninja`,
+   you only need to run this command once.
+   For a multi-configuration generator, e.g. `Visual Studio`, you may want to
+   run it more than once.
+
+   Each of these commands should also have a different `build_type` setting.
+   A second command with the same `build_type` setting will overwrite the files
+   generated by the first. You can pass the build type on the command line with
+   `--settings build_type=$BUILD_TYPE` or in the profile itself,
+   under the section `[settings]` with the key `build_type`.
+
+3. Configure CMake and pass the toolchain file generated by Conan, located at
+   `$OUTPUT_FOLDER/build/generators/conan_toolchain.cmake`.
+
+   Single-config generators:
+
+   Pass the CMake variable [`CMAKE_BUILD_TYPE`][build_type]
+   and make sure it matches the one of the `build_type` settings
+   you chose in the previous step.
+
+   For example, to build Debug, in the next command, replace "Release" with "Debug"
+
+   ```
+   cmake -DCMAKE_TOOLCHAIN_FILE:FILEPATH=build/generators/conan_toolchain.cmake -DCMAKE_BUILD_TYPE=Release -Dxrpld=ON -Dtests=ON ..
+   ```
+
+   Multi-config generators:
+
+   ```
+   cmake -DCMAKE_TOOLCHAIN_FILE:FILEPATH=build/generators/conan_toolchain.cmake -Dxrpld=ON -Dtests=ON  ..
+   ```
+
+   **Note:** You can pass build options for `xrpld` in this step.
+
+4. Build `xrpld`.
+
+   For a single-configuration generator, it will build whatever configuration
+   you passed for `CMAKE_BUILD_TYPE`. For a multi-configuration generator, you
+   must pass the option `--config` to select the build configuration.
+
+   Single-config generators:
+
+   ```
+   cmake --build . --parallel N
+   ```
+
+   Multi-config generators:
+
+   ```
+   cmake --build . --config Release --parallel N
+   cmake --build . --config Debug --parallel N
+   ```
+
+   Replace the `--parallel` parameter N with the desired number of parallel jobs. A common starting point is half of the number of available CPU
+   cores.
+
+5. Test xrpld.
+
+   Single-config generators:
+
+   ```
+   ./xrpld --unittest --unittest-jobs N
+   ```
+
+   Multi-config generators:
+
+   ```
+   ./Release/xrpld --unittest --unittest-jobs N
+   ./Debug/xrpld --unittest --unittest-jobs N
+   ```
+
+   Replace the `--unittest-jobs` parameter N with the desired unit tests
+   concurrency. Recommended setting is half of the number of available CPU
+   cores.
+
+   The location of `xrpld` binary in your build directory depends on your
+   CMake generator. Pass `--help` to see the rest of the command line options.
+
+## Code generation
+
+The protocol wrapper classes in `include/xrpl/protocol_autogen/` are generated
+from macro definition files in `include/xrpl/protocol/detail/`. If you modify
+the macro files (e.g. `transactions.macro`, `ledger_entries.macro`) or the
+generation scripts/templates in `cmake/scripts/codegen/`, you need to regenerate the
+files:
+
+```
+cmake --build . --target setup_code_gen  # create venv and install dependencies (once)
+cmake --build . --target code_gen        # regenerate code
+```
+
+The same targets are also available as a standalone project, which does not
+need the dependencies to be configured first:
+
+```
+cmake -S cmake/codegen -B build/codegen
+cmake --build build/codegen --target setup_code_gen
+cmake --build build/codegen --target code_gen
+```
+
+The regenerated files should be committed alongside your changes. CI verifies
+that they are up-to-date.
+
+## Coverage report
+
+The coverage report is intended for developers using compilers GCC
+or Clang (including Apple Clang). It is generated by the build target `coverage`,
+which is only enabled when the `coverage` option is set, e.g. with
+`--options coverage=True` in `conan` or `-Dcoverage=ON` variable in `cmake`
+
+Prerequisites for the coverage report:
+
+- [gcovr tool][gcovr] (can be installed e.g. with [pip][python-pip])
+- `gcov` for GCC or `llvm-cov` for Clang, usually installed with the compiler
+- `Debug` build type
+
+> [!NOTE]
+> Clang coverage is not available in the [Nix development shell](./docs/build/nix.md#building-xrpld-in-the-nix-shell):
+> its `clang` shells do not ship `llvm-cov`. Use a `gcc` shell instead (`.#gcc`,
+> or `.#gcc-plain` on Linux), which provides a `gcov` matching its compiler.
+
+A coverage report is created when the following steps are completed, in order:
+
+1. `xrpld` binary built with instrumentation data, enabled by the `coverage`
+   option mentioned above
+2. completed one or more run of the unit tests, which populates coverage capture data
+3. completed run of the `gcovr` tool (which internally invokes either `gcov` or `llvm-cov`)
+   to assemble both instrumentation data and the coverage capture data into a coverage report
+
+The last step of the above is automated into a single target `coverage`. The instrumented
+`xrpld` binary can also be used for regular development or testing work, at
+the cost of extra disk space utilization and a small performance hit
+(to store coverage capture data). Since `xrpld` binary is simply a dependency of the
+coverage report target, it is possible to re-run the `coverage` target without
+rebuilding the `xrpld` binary. Note, running of the unit tests before the `coverage`
+target is left to the developer. Each such run will append to the coverage data
+collected in the build directory.
+
+The default coverage report format is `html-details`, but the user
+can override it to any of the formats listed in `Builds/CMake/CodeCoverage.cmake`
+by setting the `coverage_format` variable in `cmake`. It is also possible
+to generate more than one format at a time by setting the `coverage_extra_args`
+variable in `cmake`. The specific command line used to run the `gcovr` tool will be
+displayed if the `CODE_COVERAGE_VERBOSE` variable is set.
+
+Example use with some cmake variables set:
+
+```
+cd .build
+conan install .. --output-folder . --build missing --settings build_type=Debug
+cmake -DCMAKE_BUILD_TYPE=Debug -Dcoverage=ON -Dxrpld=ON -Dtests=ON -Dcoverage_test_parallelism=2 -Dcoverage_format=html-details -Dcoverage_extra_args="--json coverage.json" -DCMAKE_TOOLCHAIN_FILE:FILEPATH=build/generators/conan_toolchain.cmake ..
+cmake --build . --target coverage
+```
+
+After the `coverage` target is completed, the generated coverage report will be
+stored inside the build directory, as either of:
+
+- file named `coverage.`_extension_, with a suitable extension for the report format, or
+- directory named `coverage`, with the `index.html` and other files inside, for the `html-details` or `html-nested` report formats.
+
+## Sanitizers
+
+To build dependencies and xrpld with sanitizer instrumentation, set the
+`SANITIZERS` environment variable when running `conan install` and use the `sanitizers` profile:
+
+```bash
+export SANITIZERS=address,undefinedbehavior
+
+conan install .. --output-folder . --profile:all sanitizers --build missing --settings build_type=Debug
+```
+
+You can then build and test as usual, with the generated `xrpld` binary containing the sanitizer instrumentation. When you run it, it will report any sanitizer errors it detects in the console output.
+
+See [Sanitizers docs](./docs/build/sanitizers.md) for more details.
+
+## Options
+
+| Option           | Default Value | Description                                                                   |
+| ---------------- | ------------- | ----------------------------------------------------------------------------- |
+| `assert`         | OFF           | Force enabling assertions.                                                    |
+| `coverage`       | OFF           | Prepare the coverage report.                                                  |
+| `rust`           | OFF           | Build the Rust crates and the C++ code that depends on them.                  |
+| `tests`          | OFF           | Build tests.                                                                  |
+| `unity`          | OFF           | Configure a unity build.                                                      |
+| `verify_headers` | ON            | Make the `verify-headers` target available to compile each header on its own. |
+| `xrpld`          | OFF           | Build the xrpld application, and not just the libxrpl library.                |
+| `werr`           | OFF           | Treat compilation warnings as errors                                          |
+| `wextra`         | OFF           | Enable additional compilation warnings                                        |
+
+[Unity builds][unity-build] may be faster for the first build (at the cost of much more
+memory) since they concatenate sources into fewer translation units. Non-unity
+builds may be faster for incremental builds, and can be helpful for detecting
+`#include` omissions.
+
+### Rust crates
+
+The Rust crates in `crates/` are only part of the build when `rust` is ON. With
+`-Drust=OFF` (the default) the `crates` directory is not added to the build, no
+cxxbridge bindings are generated, and the C++ tests that exercise the Rust
+interop are not compiled — so no Rust toolchain is needed. CI builds always pass
+`-Drust=ON`.
+
+With `-Drust=ON` you need one extra dependency: a Rust toolchain (`cargo`,
+`rustc`) matching the channel pinned in
+[`rust-toolchain.toml`](./rust-toolchain.toml), which compiles the crates and
+generates the cxxbridge bindings. It is provided by the
+[Nix development shell](./docs/build/nix.md), so `-Drust=ON` works there without
+any extra setup; otherwise install it as described in
+[Rust](./docs/build/environment.md#rust).
+
+The crates also have their own Rust unit tests. Those are run with `cargo` and
+need only the Rust toolchain, independently of CMake and of the `rust` option
+(CI runs them with `cargo nextest`):
+
+```bash
+cargo test --manifest-path crates/Cargo.toml --workspace
+```
+
+### Verifying headers
+
+The regular build only compiles `.cpp` files, so a header is only ever checked
+through whatever translation unit happens to include it. A header that forgets
+an `#include` is not caught as long as every `.cpp` that uses it includes its
+missing dependency first. The `verify_headers` option (ON by default) adds a
+`verify-headers` target that compiles every header on its own, which fails if a
+header is not self-contained:
+
+```bash
+cmake --build . --target verify-headers
+```
+
+The per-header objects are excluded from the `all` target, so a normal build
+never compiles them; they are built only through `verify-headers`. The generated
+translation units do appear in `compile_commands.json`, so clang-tidy (and
+clangd and IDEs) can lint each header on its own. Pass `-Dverify_headers=OFF` to
+omit them entirely.
+
+## Troubleshooting
+
+### Conan
+
+After any updates or changes to dependencies, you may need to do the following:
+
+1. Remove your build directory.
+2. Remove individual libraries from the Conan cache, e.g.
+
+   ```bash
+   conan remove 'grpc/*'
+   ```
+
+   **or**
+
+   Remove all libraries from Conan cache:
+
+   ```bash
+   conan remove '*'
+   ```
+
+3. Re-run [conan export](./docs/build/advanced_conan.md#patched-recipes) if needed.
+4. [Regenerate lockfile](./docs/build/advanced_conan.md#conan-lockfile).
+5. Re-run [conan install](#build-and-test).
+
+If you are using the Nix development shell, whether prebuilt Conan binaries apply
+depends on your platform — see
+[Prebuilt packages](./docs/build/nix.md#prebuilt-packages).
+
+#### ERROR: Package not resolved
+
+If you're seeing an error like `ERROR: Package 'snappy/1.1.10' not resolved: Unable to find 'snappy/1.1.10#968fef506ff261592ec30c574d4a7809%1756234314.246' in remotes.`,
+please [set Conan up](#set-up-conan) so the `xrplf` remote is configured, or re-run `conan export` for [patched recipes](./docs/build/advanced_conan.md#patched-recipes).
+
+### `protobuf/port_def.inc` file not found
+
+If `cmake --build .` results in an error due to a missing a protobuf file, then
+you might have generated CMake files for a different `build_type` than the
+`CMAKE_BUILD_TYPE` you passed to Conan.
+
+```
+/xrpld/.build/pb-xrpl.libpb/xrpl/proto/xrpl.pb.h:10:10: fatal error: 'google/protobuf/port_def.inc' file not found
+   10 | #include <google/protobuf/port_def.inc>
+      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+1 error generated.
+```
+
+For example, if you want to build Debug:
+
+1. For conan install, pass `--settings build_type=Debug`
+2. For cmake, pass `-DCMAKE_BUILD_TYPE=Debug`
+
+[conan-getting-started]: https://docs.conan.io/en/latest/getting_started.html
+[unity-build]: https://en.wikipedia.org/wiki/Unity_build
+[gcovr]: https://gcovr.com/en/stable/getting-started.html
+[python-pip]: https://packaging.python.org/en/latest/guides/installing-using-pip-and-virtual-environments/
+[build_type]: https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html
--- a/Builds/CMake/CMakeFuncs.cmake
+++ b/Builds/CMake/CMakeFuncs.cmake
@@ -1,117 +0,0 @@
-
-## "target" parsing..DEPRECATED and will be removed in future
-macro(parse_target)
-  if (target)
-    # Parse the target
-    set(remaining ${target})
-    while (remaining)
-      # get the component up to the next dot or end
-      string(REGEX REPLACE "^\\.?([^\\.]+).*$" "\\1" cur_component ${remaining})
-      string(REGEX REPLACE "^\\.?[^\\.]+(.*$)" "\\1" remaining ${remaining})
-
-      if (${cur_component} STREQUAL gcc)
-        if (DEFINED ENV{GNU_CC})
-          set(CMAKE_C_COMPILER $ENV{GNU_CC})
-        elseif ($ENV{CC} MATCHES .*gcc.*)
-          set(CMAKE_C_COMPILER $ENV{CC})
-        else()
-          find_program(CMAKE_C_COMPILER gcc)
-        endif()
-
-        if (DEFINED ENV{GNU_CXX})
-          set(CMAKE_CXX_COMPILER $ENV{GNU_CXX})
-        elseif ($ENV{CXX} MATCHES .*g\\+\\+.*)
-          set(CMAKE_CXX_COMPILER $ENV{CXX})
-        else()
-          find_program(CMAKE_CXX_COMPILER g++)
-        endif()
-      endif()
-
-      if (${cur_component} STREQUAL clang)
-        if (DEFINED ENV{CLANG_CC})
-          set(CMAKE_C_COMPILER $ENV{CLANG_CC})
-        elseif ($ENV{CC} MATCHES .*clang.*)
-          set(CMAKE_C_COMPILER $ENV{CC})
-        else()
-          find_program(CMAKE_C_COMPILER clang)
-        endif()
-
-        if (DEFINED ENV{CLANG_CXX})
-          set(CMAKE_CXX_COMPILER $ENV{CLANG_CXX})
-        elseif ($ENV{CXX} MATCHES .*clang.*)
-          set(CMAKE_CXX_COMPILER $ENV{CXX})
-        else()
-          find_program(CMAKE_CXX_COMPILER clang++)
-        endif()
-      endif()
-
-      if (${cur_component} STREQUAL msvc)
-        # TBD
-      endif()
-
-      if (${cur_component} STREQUAL unity)
-        set(unity ON CACHE BOOL "" FORCE)
-      endif()
-
-      if (${cur_component} STREQUAL nounity)
-        set(unity OFF CACHE BOOL "" FORCE)
-      endif()
-
-      if (${cur_component} STREQUAL debug)
-        set(release false)
-      endif()
-
-      if (${cur_component} STREQUAL release)
-        set(release true)
-      endif()
-
-      if (${cur_component} STREQUAL coverage)
-        set(coverage ON CACHE BOOL "" FORCE)
-        set(debug true)
-      endif()
-
-      if (${cur_component} STREQUAL profile)
-        set(profile ON CACHE BOOL "" FORCE)
-      endif()
-    endwhile()
-  endif()
-
-  if(CMAKE_C_COMPILER MATCHES "-NOTFOUND$" OR
-    CMAKE_CXX_COMPILER MATCHES "-NOTFOUND$")
-    message(FATAL_ERROR "Can not find appropriate compiler for target ${target}")
-  endif()
-
-  if (release)
-    set(CMAKE_BUILD_TYPE Release)
-  else()
-    set(CMAKE_BUILD_TYPE Debug)
-  endif()
-endmacro()
-
-############################################################
-
-macro(group_sources_in source_dir curdir)
-  file(GLOB children RELATIVE ${source_dir}/${curdir}
-    ${source_dir}/${curdir}/*)
-  foreach (child ${children})
-    if (IS_DIRECTORY ${source_dir}/${curdir}/${child})
-      group_sources_in(${source_dir} ${curdir}/${child})
-    else()
-      string(REPLACE "/" "\\" groupname ${curdir})
-      source_group(${groupname} FILES
-        ${source_dir}/${curdir}/${child})
-    endif()
-  endforeach()
-endmacro()
-
-macro(group_sources curdir)
-  group_sources_in(${PROJECT_SOURCE_DIR} ${curdir})
-endmacro()
-
-macro (exclude_if_included target_)
-  if (NOT ${CMAKE_CURRENT_SOURCE_DIR} STREQUAL ${CMAKE_SOURCE_DIR})
-    set_target_properties (${target_} PROPERTIES EXCLUDE_FROM_ALL ON)
-    set_target_properties (${target_} PROPERTIES EXCLUDE_FROM_DEFAULT_BUILD ON)
-  endif ()
-endmacro ()
-
--- a/Builds/CMake/FindBoost.cmake
+++ b/Builds/CMake/FindBoost.cmake
--- a/Builds/CMake/Findjemalloc.cmake
+++ b/Builds/CMake/Findjemalloc.cmake
@@ -1,47 +0,0 @@
-# - Try to find jemalloc
-# Once done this will define
-#  JEMALLOC_FOUND - System has jemalloc
-#  JEMALLOC_INCLUDE_DIRS - The jemalloc include directories
-#  JEMALLOC_LIBRARIES - The libraries needed to use jemalloc
-
-if(NOT USE_BUNDLED_JEMALLOC)
-  find_package(PkgConfig)
-  if (PKG_CONFIG_FOUND)
-    pkg_check_modules(PC_JEMALLOC QUIET jemalloc)
-  endif()
-else()
-  set(PC_JEMALLOC_INCLUDEDIR)
-  set(PC_JEMALLOC_INCLUDE_DIRS)
-  set(PC_JEMALLOC_LIBDIR)
-  set(PC_JEMALLOC_LIBRARY_DIRS)
-  set(LIMIT_SEARCH NO_DEFAULT_PATH)
-endif()
-
-set(JEMALLOC_DEFINITIONS ${PC_JEMALLOC_CFLAGS_OTHER})
-
-find_path(JEMALLOC_INCLUDE_DIR jemalloc/jemalloc.h
-          PATHS ${PC_JEMALLOC_INCLUDEDIR} ${PC_JEMALLOC_INCLUDE_DIRS}
-          ${LIMIT_SEARCH})
-
-# If we're asked to use static linkage, add libjemalloc.a as a preferred library name.
-if(JEMALLOC_USE_STATIC)
-  list(APPEND JEMALLOC_NAMES
-    "${CMAKE_STATIC_LIBRARY_PREFIX}jemalloc${CMAKE_STATIC_LIBRARY_SUFFIX}")
-endif()
-
-list(APPEND JEMALLOC_NAMES jemalloc)
-
-find_library(JEMALLOC_LIBRARY NAMES ${JEMALLOC_NAMES}
-  HINTS ${PC_JEMALLOC_LIBDIR} ${PC_JEMALLOC_LIBRARY_DIRS}
-  ${LIMIT_SEARCH})
-
-set(JEMALLOC_LIBRARIES ${JEMALLOC_LIBRARY})
-set(JEMALLOC_INCLUDE_DIRS ${JEMALLOC_INCLUDE_DIR})
-
-include(FindPackageHandleStandardArgs)
-# handle the QUIETLY and REQUIRED arguments and set JEMALLOC_FOUND to TRUE
-# if all listed variables are TRUE
-find_package_handle_standard_args(JeMalloc DEFAULT_MSG
-  JEMALLOC_LIBRARY JEMALLOC_INCLUDE_DIR)
-
-mark_as_advanced(JEMALLOC_INCLUDE_DIR JEMALLOC_LIBRARY)
--- a/Builds/CMake/RippleConfig.cmake
+++ b/Builds/CMake/RippleConfig.cmake
@@ -1,55 +0,0 @@
-include (CMakeFindDependencyMacro)
-# need to represent system dependencies of the lib here
-#[=========================================================[
-  Boost
-#]=========================================================]
-if (static OR APPLE OR MSVC)
-  set (Boost_USE_STATIC_LIBS ON)
-endif ()
-set (Boost_USE_MULTITHREADED ON)
-if (static OR MSVC)
-  set (Boost_USE_STATIC_RUNTIME ON)
-else ()
-  set (Boost_USE_STATIC_RUNTIME OFF)
-endif ()
-find_dependency (Boost 1.67
-  COMPONENTS
-    chrono
-    context
-    coroutine
-    date_time
-    filesystem
-    program_options
-    regex
-    serialization
-    system
-    thread)
-#[=========================================================[
-  OpenSSL
-#]=========================================================]
-if (APPLE AND NOT DEFINED ENV{OPENSSL_ROOT_DIR})
-  find_program (HOMEBREW brew)
-  if (NOT HOMEBREW STREQUAL "HOMEBREW-NOTFOUND")
-    execute_process (COMMAND ${HOMEBREW} --prefix openssl
-      OUTPUT_VARIABLE OPENSSL_ROOT_DIR
-      OUTPUT_STRIP_TRAILING_WHITESPACE)
-  endif ()
-endif ()
-
-if ((NOT DEFINED OPENSSL_ROOT) AND (DEFINED ENV{OPENSSL_ROOT}))
-  set (OPENSSL_ROOT $ENV{OPENSSL_ROOT})
-endif ()
-file (TO_CMAKE_PATH "${OPENSSL_ROOT}" OPENSSL_ROOT)
-
-if (static OR APPLE OR MSVC)
-  set (OPENSSL_USE_STATIC_LIBS ON)
-endif ()
-set (OPENSSL_MSVC_STATIC_RT ON)
-find_dependency (OpenSSL 1.0.2 REQUIRED)
-find_dependency (ZLIB)
-if (TARGET ZLIB::ZLIB)
-  set_target_properties(OpenSSL::Crypto PROPERTIES
-    INTERFACE_LINK_LIBRARIES ZLIB::ZLIB)
-endif ()
-
-include ("${CMAKE_CURRENT_LIST_DIR}/RippleTargets.cmake")
--- a/Builds/Test.py
+++ b/Builds/Test.py
@@ -1,397 +0,0 @@
-#!/usr/bin/env python
-
-#    This file is part of rippled: https://github.com/ripple/rippled
-#    Copyright (c) 2012 - 2017 Ripple Labs Inc.
-#
-#    Permission to use, copy, modify, and/or distribute this software for any
-#    purpose  with  or without fee is hereby granted, provided that the above
-#    copyright notice and this permission notice appear in all copies.
-#
-#    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-#    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
-#    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-#    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-#    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
-#    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-#    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-"""
-Invocation:
-
-    ./Builds/Test.py - builds and tests all configurations
-
-The build must succeed without shell aliases for this to work.
-
-To pass flags to cmake, put them at the very end of the command line, after
-the -- flag - like this:
-
-    ./Builds/Test.py -- -j4  # Pass -j4 to cmake --build
-
-
-Common problems:
-
-1) Boost not found. Solution: export BOOST_ROOT=[path to boost folder]
-
-2) OpenSSL not found. Solution: export OPENSSL_ROOT=[path to OpenSSL folder]
-
-3) cmake is not found. Solution: Be sure cmake directory is on your $PATH
-
-"""
-from __future__ import absolute_import, division, print_function, unicode_literals
-
-import argparse
-import itertools
-import os
-import platform
-import re
-import shutil
-import sys
-import subprocess
-
-
-def powerset(iterable):
-    """powerset([1,2,3]) --> () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3)"""
-    s = list(iterable)
-    return itertools.chain.from_iterable(itertools.combinations(s, r) for r in range(len(s) + 1))
-
-IS_WINDOWS = platform.system().lower() == 'windows'
-IS_OS_X = platform.system().lower() == 'darwin'
-
-# CMake
-if IS_WINDOWS:
-    CMAKE_UNITY_CONFIGS = ['Debug', 'Release']
-    CMAKE_NONUNITY_CONFIGS = ['Debug', 'Release']
-else:
-    CMAKE_UNITY_CONFIGS = []
-    CMAKE_NONUNITY_CONFIGS = []
-CMAKE_UNITY_COMBOS = { '' : [['rippled'], CMAKE_UNITY_CONFIGS],
-    '.nounity' : [['rippled'], CMAKE_NONUNITY_CONFIGS] }
-
-if IS_WINDOWS:
-    CMAKE_DIR_TARGETS = { ('msvc' + unity,) : targets for unity, targets in
-        CMAKE_UNITY_COMBOS.items() }
-elif IS_OS_X:
-    CMAKE_DIR_TARGETS = { (build + unity,) : targets
-                   for build in ['debug', 'release']
-                   for unity, targets in CMAKE_UNITY_COMBOS.items() }
-else:
-    CMAKE_DIR_TARGETS = { (cc + "." + build + unity,) : targets
-                   for cc in ['gcc', 'clang']
-                   for build in ['debug', 'release', 'coverage', 'profile']
-                   for unity, targets in CMAKE_UNITY_COMBOS.items() }
-
-# list of tuples of all possible options
-if IS_WINDOWS or IS_OS_X:
-    CMAKE_ALL_GENERATE_OPTIONS = [tuple(x) for x in powerset(['-GNinja', '-Dassert=true'])]
-else:
-    CMAKE_ALL_GENERATE_OPTIONS = list(set(
-        [tuple(x) for x in powerset(['-GNinja', '-Dstatic=true', '-Dassert=true', '-Dsan=address'])] +
-        [tuple(x) for x in powerset(['-GNinja', '-Dstatic=true', '-Dassert=true', '-Dsan=thread'])]))
-
-parser = argparse.ArgumentParser(
-    description='Test.py - run ripple tests'
-)
-
-parser.add_argument(
-    '--all', '-a',
-    action='store_true',
-    help='Build all configurations.',
-)
-
-parser.add_argument(
-    '--keep_going', '-k',
-    action='store_true',
-    help='Keep going after one configuration has failed.',
-)
-
-parser.add_argument(
-    '--silent', '-s',
-    action='store_true',
-    help='Silence all messages except errors',
-)
-
-parser.add_argument(
-    '--verbose', '-v',
-    action='store_true',
-    help=('Report more information about which commands are executed and the '
-          'results.'),
-)
-
-parser.add_argument(
-    '--test', '-t',
-    default='',
-    help='Add a prefix for unit tests',
-)
-
-parser.add_argument(
-    '--testjobs',
-    default='0',
-    type=int,
-    help='Run tests in parallel'
-)
-
-parser.add_argument(
-    '--ipv6',
-    action='store_true',
-    help='Use IPv6 localhost when running unit tests.',
-)
-
-parser.add_argument(
-    '--clean', '-c',
-    action='store_true',
-    help='delete all build artifacts after testing',
-)
-
-parser.add_argument(
-    '--quiet', '-q',
-    action='store_true',
-    help='Reduce output where possible (unit tests)',
-)
-
-parser.add_argument(
-    '--dir', '-d',
-    default=(),
-    nargs='*',
-    help='Specify one or more CMake dir names. '
-        'Will also be used as -Dtarget=<dir> running cmake.'
-)
-
-parser.add_argument(
-    '--target',
-    default=(),
-    nargs='*',
-    help='Specify one or more CMake build targets. '
-        'Will be used as --target <target> running cmake --build.'
-    )
-
-parser.add_argument(
-    '--config',
-    default=(),
-    nargs='*',
-    help='Specify one or more CMake build configs. '
-        'Will be used as --config <config> running cmake --build.'
-    )
-
-parser.add_argument(
-    '--generator_option',
-    action='append',
-    help='Specify a CMake generator option. Repeat for multiple options. '
-        'Will be passed to the cmake generator. '
-        'Due to limits of the argument parser, arguments starting with \'-\' '
-        'must be attached to this option. e.g. --generator_option=-GNinja.')
-
-parser.add_argument(
-    '--build_option',
-    action='append',
-    help='Specify a build option. Repeat for multiple options. '
-        'Will be passed to the build tool via cmake --build. '
-        'Due to limits of the argument parser, arguments starting with \'-\' '
-        'must be attached to this option. e.g. --build_option=-j8.')
-
-parser.add_argument(
-    'extra_args',
-    default=(),
-    nargs='*',
-    help='Extra arguments are passed through to the tools'
-)
-
-ARGS = parser.parse_args()
-
-def decodeString(line):
-    # Python 2 vs. Python 3
-    if isinstance(line, str):
-        return line
-    else:
-        return line.decode()
-
-def shell(cmd, args=(), silent=False, cust_env=None):
-    """"Execute a shell command and return the output."""
-    silent = ARGS.silent or silent
-    verbose = not silent and ARGS.verbose
-    if verbose:
-        print('$' + cmd, *args)
-
-    command = (cmd,) + args
-
-    # shell is needed in Windows to find executable in the path
-    process = subprocess.Popen(
-        command,
-        stdin=subprocess.PIPE,
-        stdout=subprocess.PIPE,
-        stderr=subprocess.STDOUT,
-        env=cust_env,
-        shell=IS_WINDOWS)
-    lines = []
-    count = 0
-    # readline returns '' at EOF
-    for line in iter(process.stdout.readline, ''):
-        if process.poll() is None:
-            decoded = decodeString(line)
-            lines.append(decoded)
-            if verbose:
-                print(decoded, end='')
-            elif not silent:
-                count += 1
-                if count >= 80:
-                    print()
-                    count = 0
-                else:
-                    print('.', end='')
-        else:
-            break
-
-    if not verbose and count:
-        print()
-    process.wait()
-    return process.returncode, lines
-
-def get_cmake_dir(cmake_dir):
-    return os.path.join('build' , 'cmake' , cmake_dir)
-
-def run_cmake(directory, cmake_dir, args):
-    print('Generating build in', directory, 'with', *args or ('default options',))
-    old_dir = os.getcwd()
-    if not os.path.exists(directory):
-        os.makedirs(directory)
-    os.chdir(directory)
-    if IS_WINDOWS and not any(arg.startswith("-G") for arg in args) and not os.path.exists("CMakeCache.txt"):
-        if '--ninja' in args:
-            args += ( '-GNinja', )
-        else:
-            args += ( '-GVisual Studio 14 2015 Win64', )
-    # hack to extract cmake options/args from the legacy target format
-    if re.search('\.unity', cmake_dir):
-        args += ( '-Dunity=ON', )
-    if re.search('\.nounity', cmake_dir):
-        args += ( '-Dunity=OFF', )
-    if re.search('coverage', cmake_dir):
-        args += ( '-Dcoverage=ON', )
-    if re.search('profile', cmake_dir):
-        args += ( '-Dprofile=ON', )
-    if re.search('debug', cmake_dir):
-        args += ( '-DCMAKE_BUILD_TYPE=Debug', )
-    if re.search('release', cmake_dir):
-        args += ( '-DCMAKE_BUILD_TYPE=Release', )
-    if re.search('gcc', cmake_dir):
-        args += ( '-DCMAKE_C_COMPILER=gcc', '-DCMAKE_CXX_COMPILER=g++', )
-    if re.search('clang', cmake_dir):
-        args += ( '-DCMAKE_C_COMPILER=clang', '-DCMAKE_CXX_COMPILER=clang++', )
-
-    args += ( os.path.join('..', '..', '..'), )
-    resultcode, lines = shell('cmake', args)
-
-    if resultcode:
-        print('Generating FAILED:')
-        if not ARGS.verbose:
-            print(*lines, sep='')
-        sys.exit(1)
-
-    os.chdir(old_dir)
-
-def run_cmake_build(directory, target, config, args):
-    print('Building', target, config, 'in', directory, 'with', *args or ('default options',))
-    build_args=('--build', directory)
-    if target:
-      build_args += ('--target', target)
-    if config:
-      build_args += ('--config', config)
-    if args:
-        build_args += ('--',)
-        build_args += tuple(args)
-    resultcode, lines = shell('cmake', build_args)
-
-    if resultcode:
-        print('Build FAILED:')
-        if not ARGS.verbose:
-            print(*lines, sep='')
-        sys.exit(1)
-
-def run_cmake_tests(directory, target, config):
-    failed = []
-    if IS_WINDOWS:
-        target += '.exe'
-    executable = os.path.join(directory, config if config else 'Debug', target)
-    if(not os.path.exists(executable)):
-        executable = os.path.join(directory, target)
-    print('Unit tests for', executable)
-    testflag = '--unittest'
-    quiet = ''
-    testjobs = ''
-    ipv6 = ''
-    if ARGS.test:
-        testflag += ('=' + ARGS.test)
-    if ARGS.quiet:
-        quiet = '-q'
-    if ARGS.ipv6:
-        ipv6 = '--unittest-ipv6'
-    if ARGS.testjobs:
-        testjobs = ('--unittest-jobs=' + str(ARGS.testjobs))
-    resultcode, lines = shell(executable, (testflag, quiet, testjobs, ipv6))
-
-    if resultcode:
-        if not ARGS.verbose:
-            print('ERROR:', *lines, sep='')
-        failed.append([target, 'unittest'])
-
-    return failed
-
-def main():
-    all_failed = []
-    if ARGS.all:
-        build_dir_targets = CMAKE_DIR_TARGETS
-        generator_options = CMAKE_ALL_GENERATE_OPTIONS
-    else:
-        build_dir_targets = { tuple(ARGS.dir) : [ARGS.target, ARGS.config] }
-        if ARGS.generator_option:
-            generator_options = [tuple(ARGS.generator_option)]
-        else:
-            generator_options = [tuple()]
-
-    if not build_dir_targets:
-        # Let CMake choose the build tool.
-        build_dir_targets = { () : [] }
-
-    if ARGS.build_option:
-        ARGS.build_option = ARGS.build_option + list(ARGS.extra_args)
-    else:
-        ARGS.build_option = list(ARGS.extra_args)
-
-    for args in generator_options:
-        for build_dirs, (build_targets, build_configs) in build_dir_targets.items():
-            if not build_dirs:
-                build_dirs = ('default',)
-            if not build_targets:
-                build_targets = ('rippled',)
-            if not build_configs:
-                build_configs = ('',)
-            for cmake_dir in build_dirs:
-                cmake_full_dir = get_cmake_dir(cmake_dir)
-                run_cmake(cmake_full_dir, cmake_dir, args)
-
-                for target in build_targets:
-                    for config in build_configs:
-                        run_cmake_build(cmake_full_dir, target, config, ARGS.build_option)
-                        failed = run_cmake_tests(cmake_full_dir, target, config)
-
-                        if failed:
-                            print('FAILED:', *(':'.join(f) for f in failed))
-                            if not ARGS.keep_going:
-                                sys.exit(1)
-                            else:
-                                all_failed.extend([decodeString(cmake_dir +
-                                        "." + target + "." + config), ':'.join(f)]
-                                    for f in failed)
-                        else:
-                            print('Success')
-                if ARGS.clean:
-                    shutil.rmtree(cmake_full_dir)
-
-    if all_failed:
-        if len(all_failed) > 1:
-            print()
-            print('FAILED:', *(':'.join(f) for f in all_failed))
-        sys.exit(1)
-
-if __name__ == '__main__':
-    main()
-    sys.exit(0)
--- a/Builds/VisualStudio2017/CMakeSettings-example.json
+++ b/Builds/VisualStudio2017/CMakeSettings-example.json
@@ -1,45 +0,0 @@
-{
-  // See https://go.microsoft.com//fwlink//?linkid=834763 for more information about this file.
-  "configurations": [
-    {
-      "name": "x64-Debug",
-      "generator": "Visual Studio 15 2017 Win64",
-      "configurationType": "Debug",
-      "inheritEnvironments": [ "msvc_x64_x64" ],
-      "buildRoot": "${thisFileDir}\\build\\${name}",
-      "cmakeCommandArgs": "",
-      "buildCommandArgs": "-v:minimal",
-      "ctestCommandArgs": "",
-      "variables": [
-        {
-          "name": "BOOST_ROOT",
-          "value": "C:\\lib\\boost"
-        },
-        {
-          "name": "OPENSSL_ROOT",
-          "value": "C:\\lib\\OpenSSL-Win64"
-        }
-      ]
-    },
-    {
-      "name": "x64-Release",
-      "generator": "Visual Studio 15 2017 Win64",
-      "configurationType": "Release",
-      "inheritEnvironments": [ "msvc_x64_x64" ],
-      "buildRoot": "${thisFileDir}\\build\\${name}",
-      "cmakeCommandArgs": "",
-      "buildCommandArgs": "-v:minimal",
-      "ctestCommandArgs": "",
-      "variables": [
-        {
-          "name": "BOOST_ROOT",
-          "value": "C:\\lib\\boost"
-        },
-        {
-          "name": "OPENSSL_ROOT",
-          "value": "C:\\lib\\OpenSSL-Win64"
-        }
-      ]
-    }
-  ]
-}
--- a/Builds/VisualStudio2017/README.md
+++ b/Builds/VisualStudio2017/README.md
@@ -1,265 +0,0 @@
-# Visual Studio 2017 Build Instructions
-
-## Important
-
-We do not recommend Windows for rippled production use at this time. Currently,
-the Ubuntu platform has received the highest level of quality assurance,
-testing, and support. Additionally, 32-bit Windows versions are not supported.
-
-## Prerequisites
-
-To clone the source code repository, create branches for inspection or
-modification, build rippled under Visual Studio, and run the unit tests you will
-need these software components
-
-| Component | Minimum Recommended Version |
-|-----------|-----------------------|
-| [Visual Studio 2017](README.md#install-visual-studio-2017)| 15.5.4 |
-| [Git for Windows](README.md#install-git-for-windows)| 2.16.1|
-| [Google Protocol Buffers Compiler](README.md#install-google-protocol-buffers-compiler) | 2.5.1|
-| [OpenSSL Library](README.md#install-openssl) | 1.0.2n |
-| [Boost library](README.md#build-boost) | 1.67.0 |
-| [CMake for Windows](README.md#optional-install-cmake-for-windows)* | 3.10.2 |
-
-\* Only needed if not using the integrated CMake in VS 2017 and prefer generating dedicated project/solution files.
-
-## Install Software
-
-### Install Visual Studio 2017
-
-If not already installed on your system, download your choice of installer from
-the [Visual Studio 2017
-Download](https://www.visualstudio.com/downloads/download-visual-studio-vs)
-page, run the installer, and follow the directions. **You may need to choose the
-`Desktop development with C++` workload to install all necessary C++ features.**
-
-Any version of Visual Studio 2017 may be used to build rippled. The **Visual
-Studio 2017 Community** edition is available free of charge (see [the product
-page](https://www.visualstudio.com/products/visual-studio-community-vs) for
-licensing details), while paid editions may be used for an initial free-trial
-period.
-
-### Install Git for Windows
-
-Git is a distributed revision control system. The Windows version also provides
-the bash shell and many Windows versions of Unix commands. While there are other
-varieties of Git (such as TortoiseGit, which has a native Windows interface and
-integrates with the Explorer shell), we recommend installing [Git for
-Windows](https://git-scm.com/) since it provides a Unix-like command line
-environment useful for running shell scripts. Use of the bash shell under
-Windows is mandatory for running the unit tests.
-
-### Install Google Protocol Buffers Compiler
-
-Building rippled requires **protoc.exe** version 2. Version 3 is not currently
-supported.. At your option you may build it yourself from the sources in the
-[Google Protocol Buffers](https://github.com/google/protobuf) repository, or you
-may download a
-[protoc.exe](https://ripple.github.io/Downloads/protoc/2.5.1/protoc.exe)
-([alternate
-link](https://github.com/ripple/Downloads/raw/gh-pages/protoc/2.5.1/protoc.exe))
-precompiled Windows executable from the [Ripple
-Organization](https://github.com/ripple).
-
-Either way, once you have the required version of **protoc.exe**, copy it into a
-standard location that is in your command line `%PATH%`.
-
-* **NOTE:** If you use an older version of the compiler, the build will fail
-  with errors related to a mismatch of the version of protocol buffer headers
-  versus the compiler. Likewise, if you use version 3 or newer, the build will
-  fail.
-
-### Install OpenSSL
-
-[Download OpenSSL.](http://slproweb.com/products/Win32OpenSSL.html) There will
-four `Win64` bit variants available, you want the non-light `v1.0` line. As of
-this writing, you **should** select
-
-* Win64 OpenSSL v1.0.2n. 
-
-and should **not** select
-
-* Win64 OpenSSL v1.0.2n light
-* Win64 OpenSSL v1.1.0g
-* Win64 OpenSSL v1.1.0g light
-
-Run the installer, and choose an appropriate location for your OpenSSL
-installation. In this guide we use `C:\lib\OpenSSL-Win64` as the destination
-location.
-
-You may be informed on running the installer that "Visual C++ 2008
-Redistributables" must first be installed first. If so, download it from the
-[same page](http://slproweb.com/products/Win32OpenSSL.html), again making sure
-to get the correct 32-/64-bit variant.
-
-* NOTE: Since rippled links statically to OpenSSL, it does not matter where the
-  OpenSSL .DLL files are placed, or what version they are. rippled does not use
-  or require any external .DLL files to run other than the standard operating
-  system ones.
-
-### Build Boost
-
-Boost 1.67 or later is required.
-
-After [downloading boost](http://www.boost.org/users/download/) and unpacking it
-to `c:\lib`. As of this writing, the most recent version of boost is 1.67.0,
-which will unpack into a directory named `boost_1_67_0`. We recommended either
-renaming this directory to `boost`, or creating a junction link `mklink /J boost
-boost_1_67_0`, so that you can more easily switch between versions.
-
-Next, open **Developer Command Prompt** and type the following commands
-
-```powershell
-cd C:\lib\boost
-bootstrap
-```
-
-The rippled application is linked statically to the standard runtimes and
-external dependencies on Windows, to ensure that the behavior of the executable
-is not affected by changes in outside files. Therefore, it is necessary to build
-the required boost static libraries using this command:
-
-```powershell
-bjam -j<Num Parallel> --toolset=msvc-14.1 address-model=64 architecture=x86 link=static threading=multi runtime-link=shared,static stage
-```
-
-where you should replace `<Num Parallel>` with the number of parallel
-invocations to use build, e.g. `bjam -j4 ...` would use up to 4 concurrent build
-shell commands for the build.
-
-Building the boost libraries may take considerable time. When the build process
-is completed, take note of both the reported compiler include paths and linker
-library paths as they will be required later.
-
-### (Optional) Install CMake for Windows
-
-[CMake](http://cmake.org) is a cross platform build system generator. Visual
-Studio 2017 includes an integrated version of CMake that avoids having to
-manually run CMake, but it is undergoing continuous improvement. Users that
-prefer to use standard Visual Studio project and solution files need to install
-a dedicated version of Cmake to generate them.  The latest version can be found
-at the [CMake download site](https://cmake.org/download/). It is recommended you
-select the install option to add CMake to your path.
-
-As of this writing, the latest version of CMake for windows is 3.10.2.
-
-## Clone the rippled repository
-
-If you are familiar with cloning github repositories, just follow your normal
-process and clone `git@github.com:ripple/rippled.git`. Otherwise follow this
-section for instructions.
-
-1. If you don't have a github account, sign up for one at
-   [github.com](https://github.com/).
-2. Make sure you have Github ssh keys. For help see
-   [generating-ssh-keys](https://help.github.com/articles/generating-ssh-keys).
-
-Open the "Git Bash" shell that was installed with "Git for Windows" in the step
-above. Navigate to the directory where you want to clone rippled (git bash uses
-`/c` for windows's `C:` and forward slash where windows uses backslash, so
-`C:\Users\joe\projs` would be `/c/Users/joe/projs` in git bash). Now clone the
-repository and optionally switch to the *master* branch. Type the following at
-the bash prompt:
-
-```powershell
-git clone git@github.com:ripple/rippled.git
-cd rippled
-```
-If you receive an error about not having the "correct access rights" make sure
-you have Github ssh keys, as described above.
-
-For a stable release, choose the `master` branch or one of the tagged releases
-listed on [rippled's GitHub page](https://github.com/ripple/rippled/releases). 
-
-```
-git checkout master
-```
-
-To test the latest release candidate, choose the `release` branch.
-
-```
-git checkout release
-```
-
-If you are doing development work and want the latest set of untested features,
-you can consider using the `develop` branch instead.
-
-```
-git checkout develop
-```
-
-# Build using Visual Studio integrated CMake
-
-In Visual Studio 2017, Microsoft added [integrated IDE support for
-cmake](https://blogs.msdn.microsoft.com/vcblog/2016/10/05/cmake-support-in-visual-studio/).
-To begin, simply:
-
-1. Launch Visual Studio and choose **File | Open | Folder**, navigating to the
-   cloned rippled folder.
-2. Right-click on `CMakeLists.txt` in the **Solution Explorer - Folder View** to
-   generate a `CMakeSettings.json` file. A sample settings file is provided
-   [here](/Builds/VisualStudio2017/CMakeSettings-example.json). Customize the 
-   settings for `BOOST_ROOT`, `OPENSSL_ROOT` to match the install paths if they
-   differ from those in the file.
-4. Select either the `x64-Release` or `x64-Debug` configuration from the
-   **Project Setings** drop-down. This should invoke the built-in CMake project
-   generator. If not, you can right-click on the `CMakeLists.txt` file and
-   choose **Cache | Generate Cache**.
-5. Select either the `rippled.exe` (unity) or `rippled_classic.exe` (non-unity)
-   option in the **Select Startup Item** drop-down. This will be the target
-   built when you press F7. Alternatively, you can choose a target to build from
-   the top-level **CMake | Build** menu. Note that at this time, there are other
-   targets listed that come from third party visual studio files embedded in the
-   rippled repo, e.g. `datagen.vcxproj`. Please ignore them.
-
-For details on configuring debugging sessions or further customization of CMake,
-please refer to the [CMake tools for VS
-documentation](https://docs.microsoft.com/en-us/cpp/ide/cmake-tools-for-visual-cpp).
-
-If using the provided `CMakeSettings.json` file, the executable will be in
-```
-.\build\x64-Release\Release\rippled(_classic).exe
-```
-or
-```
-.\build\x64-Debug\Debug\rippled(_classic).exe
-```
-where these paths are relative to your cloned git repository.
-
-# Build using stand-alone CMake
-
-This requires having installed [CMake for
-Windows](README.md#optional-install-cmake-for-windows). We do not recommend
-mixing this method with the integrated CMake method for the same repository
-clone. Assuming you included the cmake executable folder in your path,
-execute the following commands within your `rippled` cloned repository:
-
-```
-mkdir build\cmake
-cd build\cmake
-cmake ..\.. -G"Visual Studio 15 2017 Win64" -DBOOST_ROOT="C:\lib\boost_1_67_0" -DOPENSSL_ROOT="C:\lib\OpenSSL-Win64"
-```
-Now launch Visual Studio 2017 and select **File | Open | Project/Solution**.
-Navigate to the `build\cmake` folder created above and select the `rippled.sln`
-file. You can then choose whether to build the `Debug` or `Release` solution
-configuration. Within the **Solution Explorer**, selected either the `rippled`
-(unity build) project or the `rippled_classic` (non-unity) project, and
-right-click to build.
-
-The executable will be in 
-```
-.\build\cmake\Release\rippled(_classic).exe
-```
- or
-````
-.\build\cmake\Debug\rippled(_classic).exe
-````
-where these paths are relative to your cloned git repository.
-
-# Unit Test (Recommended)
-
-`rippled` builds a set of unit tests into the server executable. To run these
-unit tests after building, pass the `--unittest` option to the compiled
-`rippled` executable. The executable will exit with summary info after running
-the unit tests.
-
--- a/Builds/build_all.sh
+++ b/Builds/build_all.sh
@@ -1,7 +0,0 @@
-#!/usr/bin/env bash
-
-num_procs=$(lscpu -p | grep -v '^#' | sort -u -t, -k 2,4 | wc -l) # number of physical cores
-
-path=$(cd $(dirname $0) && pwd)
-cd $(dirname $path)
-${path}/Test.py -a -c --testjobs=${num_procs} -- -j${num_procs}
--- a/Builds/linux/README.md
+++ b/Builds/linux/README.md
@@ -1,228 +0,0 @@
-# Linux Build Instructions
-
-This document focuses on building rippled for development purposes under recent
-Ubuntu linux distributions. To build rippled for Redhat, Fedora or Centos
-builds, including docker based builds for those distributions, please consult
-the [rippled-package-builder](https://github.com/ripple/rippled-package-builder)
-repository. 
-
-Development is regularly done on Ubuntu 16.04 or later. For non Ubuntu
-distributions, the steps below should work be installing the appropriate
-dependencies using that distribution's package management tools.
-
-## Dependencies
-
-Use `apt-get` to install the dependencies provided by the distribution
-
-```
-$ apt-get update
-$ apt-get install -y gcc g++ wget git cmake protobuf-compiler libprotobuf-dev libssl-dev
-```
-
-Advanced users can choose to install newer versions of gcc, or the clang compiler.
-At this time, rippled only supports protobuf version 2. Using version 3 of 
-protobuf will give errors.
-
-### Build Boost
-
-Boost 1.67 or later is required. We recommend downloading and compiling boost
-with the following process: After changing to the directory where
-you wish to download and compile boost, run
-
-``` 
-$ wget https://dl.bintray.com/boostorg/release/1.67.0/source/boost_1_67_0.tar.gz
-$ tar -xzf boost_1_67_0.tar.gz
-$ cd boost_1_67_0
-$ ./bootstrap.sh
-$ ./b2 headers
-$ ./b2 -j<Num Parallel>
-```
-
-### (Optional) Dependencies for Building Source Documentation
-
-Source code documentation is not required for running/debugging rippled. That
-said, the documentation contains some helpful information about specific
-components of the application. For more information on how to install and run
-the necessary components, see [this document](../../docs/README.md)
-
-## Build
-
-### Clone the rippled repository
-
-From a shell:
-
-```
-git clone git@github.com:ripple/rippled.git
-cd rippled
-```
-
-For a stable release, choose the `master` branch or one of the tagged releases
-listed on [GitHub](https://github.com/ripple/rippled/releases). 
-
-```
-git checkout master
-```
-
-or to test the latest release candidate, choose the `release` branch.
-
-```
-git checkout release
-```
-
-If you are doing development work and want the latest set of untested
-features, you can consider using the `develop` branch instead.
-
-```
-git checkout develop
-```
-
-### Configure Library Paths
-
-If you didn't persistently set the `BOOST_ROOT` environment variable to the
-directory in which you compiled boost, then you should set it temporarily.
-
-For example, you built Boost in your home directory `~/boost_1_67_0`, you
-would do for any shell in which you want to build:
-
-```
-export BOOST_ROOT=~/boost_1_67_0
-```
-
-Alternatively, you can add `DBOOST_ROOT=~/boost_1_67_0` to the command line when
-invoking `cmake`.
-
-### Generate and Build
-
-All builds should be done in a separate directory from the source tree root 
-(a subdirectory is fine). For example, from the root of the ripple source tree:
-
-```
-mkdir my_build
-cd my_build
-```
-
-followed by:
-
-```
-cmake -DCMAKE_BUILD_TYPE=Debug ..
-```
-
-`CMAKE_BUILD_TYPE` can be changed as desired for `Debug` vs.
-`Release` builds (all four standard cmake build types are supported).
-
-To select a different compiler (most likely gcc will be found by default), pass 
-`-DCMAKE_C_COMPILER=<path/to/c-compiler>` and
-`-DCMAKE_CXX_COMPILER=</path/to/cxx-compiler>` when configuring. If you prefer, 
-you can instead set `CC` and `CXX` environment variables which cmake will honor.
-
-Once you have generated the build system, you can run the build via cmake:
-
-```
-cmake --build . -- -j <parallel jobs>
-```
-
-the `-j` parameter in this example tells the build tool to compile several
-files in parallel. This value should be chosen roughly based on the number of
-cores you have available and/or want to use for building.
-
-When the build completes succesfully, you will have a `rippled` executable in
-the current directory, which can be used to connect to the network (when
-properly configured) or to run unit tests.
-
-#### Options During Configuration:
-
-The CMake file defines a number of configure-time options which can be
-examined by running `cmake-gui` or `ccmake` to generated the build. In
-particular, the `unity` option allows you to select between the unity and
-non-unity builds. `unity` builds are faster to compile since they combine
-multiple sources into a single compiliation unit - this is the default if you
-don't specify. `nounity` builds can be helpful for detecting include omissions
-or for finding other build-related issues, but aren't generally needed for
-testing and running.
-
-* `-Dunity=ON` to enable/disable unity builds (defaults to ON)  
-* `-Dassert=ON` to enable asserts
-* `-Djemalloc=ON` to enable jemalloc support for heap checking
-* `-Dsan=thread` to enable the thread sanitizer with clang
-* `-Dsan=address` to enable the address sanitizer with clang
-* `-Dstatic=ON` to enable static linking library dependencies
-
-Several other infrequently used options are available - run `ccmake` or
-`cmake-gui` for a list of all options.
-
-#### Optional Installation
-
-The rippled cmake build supports an installation target that will install
-rippled as well as a support library that can be used to sign transactions. In
-order to build and install the files, specify the `install` target when
-building, e.g.:
-
-```
-cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/opt/local ..
-cmake --build . --target install -- -j <parallel jobs>
-```
-
-We recommend specifying `CMAKE_INSTALL_PREFIX` when configuring in order to
-explicitly control the install location for your files. Without this setting,
-cmake will typically install in `/usr/local`. It is also possible to "rehome"
-the installation by specifying the `DESTDIR` env variable during the install phase,
-e.g.:
-
-```
-DESTDIR=~/mylibs cmake --build . --target install -- -j <parallel jobs>
-```
-
-in which case, the files would be installed in the `CMAKE_INSTALL_PREFIX` within
-the specified `DESTDIR` path.
-
-#### Signing Library
-
-If you want to use the signing support library to create an application, there
-are two simple mechanisms with cmake + git that facilitate this.
-
-With either option below, you will have access to a library from the
-rippled project that you can link to in your own project's CMakeLists.txt, e.g.:
-
-```
-target_link_libraries (my-signing-app Ripple::xrpl_core)
-```
-
-##### Option 1: git submodules + add_subdirectory
-
-First, add the rippled repo as a submodule to your project repo:
-
-```
-git submodule add -b master https://github.com/ripple/rippled.git vendor/rippled
-```
-
-change the `vendor/rippled` path as desired for your repo layout. Furthermore,
-change the branch name if you want to track a different rippled branch, such
-as `develop`.
-   
-Second, to bring this submodule into your project, just add the rippled subdirectory:
-
-```
-add_subdirectory (vendor/rippled)
-```
-    
-##### Option 2: installed rippled + find_package
-
-First, follow the "Optional Installation" instructions above to
-build and install the desired version of rippled.
-
-To make use of the installed files, add the following to your CMakeLists.txt file:
-
-```
-set (CMAKE_MODULE_PATH /opt/local/lib/cmake/ripple ${CMAKE_MODULE_PATH})
-find_package(Ripple REQUIRED)
-```
-
-change the `/opt/local` module path above to match your chosen installation prefix.
-
-## Unit Tests (Recommended)
-
-`rippled` builds a set of unit tests into the server executable. To run these unit
-tests after building, pass the `--unittest` option to the compiled `rippled`
-executable. The executable will exit with summary info after running the unit tests.
-
-
--- a/Builds/macos/README.md
+++ b/Builds/macos/README.md
@@ -1,231 +0,0 @@
-# macos Build Instructions
-
-## Important
-
-We don't recommend macos for rippled production use at this time. Currently, the
-Ubuntu platform has received the highest level of quality assurance and
-testing. That said, macos is suitable for many development/test tasks.
-
-## Prerequisites
-
-You'll need macos 10.8 or later.
-
-To clone the source code repository, create branches for inspection or
-modification, build rippled using clang, and run the system tests you will need
-these software components:
-
-* [XCode](https://developer.apple.com/xcode/)
-* [Homebrew](http://brew.sh/)
-* [Boost](http://boost.org/)
-* other misc utilities and libraries installed via homebrew
-
-## Install Software
-
-### Install XCode
-
-If not already installed on your system, download and install XCode using the
-appstore or by using [this link](https://developer.apple.com/xcode/).
-
-For more info, see "Step 1: Download and Install the Command Line Tools"
-[here](http://www.moncefbelyamani.com/how-to-install-xcode-homebrew-git-rvm-ruby-on-mac)
-
-The command line tools can be installed through the terminal with the command:
-
-```
-xcode-select --install
-```
-
-### Install Homebrew
-
-> "[Homebrew](http://brew.sh/) installs the stuff you need that Apple didn’t."
-
-Open a terminal and type:
-
-```
-ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
-```
-
-For more info, see "Step 2: Install Homebrew"
-[here](http://www.moncefbelyamani.com/how-to-install-xcode-homebrew-git-rvm-ruby-on-mac#step-2)
-
-### Install Dependencies Using Homebrew
-
-`brew` will generally install the latest stable version of any package, which
-should satisfy the the minimum version requirements for rippled.
-
-```
-brew update
-brew install git cmake pkg-config protobuf openssl ninja
-```
-
-### Build Boost
-
-Boost 1.67 or later is required.
-
-We want to compile boost with clang/libc++
-
-Download [a release](https://dl.bintray.com/boostorg/release/1.67.0/source/boost_1_67_0.tar.bz2)
-
-Extract it to a folder, making note of where, open a terminal, then:
-
-```
-./bootstrap.sh
-./b2 cxxflags="-std=c++14"
-```
-
-Create an environment variable `BOOST_ROOT` in one of your `rc` files, pointing
-to the root of the extracted directory.
-
-### Dependencies for Building Source Documentation
-
-Source code documentation is not required for running/debugging rippled. That
-said, the documentation contains some helpful information about specific
-components of the application. For more information on how to install and run
-the necessary components, see [this document](../../docs/README.md)
-
-## Build
-
-### Clone the rippled repository
-
-From a shell:
-
-```
-git clone git@github.com:ripple/rippled.git
-cd rippled
-```
-
-For a stable release, choose the `master` branch or one of the tagged releases
-listed on [GitHub](https://github.com/ripple/rippled/releases GitHub). 
-
-```
-git checkout master
-```
-
-or to test the latest release candidate, choose the `release` branch.
-
-```
-git checkout release
-```
-
-If you are doing development work and want the latest set of untested
-features, you can consider using the `develop` branch instead.
-
-```
-git checkout develop
-```
-
-### Configure Library Paths
-
-If you didn't persistently set the `BOOST_ROOT` environment variable to the
-root of the extracted directory above, then you should set it temporarily.
-
-For example, assuming your username were `Abigail` and you extracted Boost
-1.67.0 in `/Users/Abigail/Downloads/boost_1_67_0`, you would do for any
-shell in which you want to build:
-
-```
-export BOOST_ROOT=/Users/Abigail/Downloads/boost_1_67_0
-```
-
-### Generate and Build
-
-For simple command line building we recommend using the *Unix Makefile* or
-*Ninja* generator with cmake. All builds should be done in a separate directory
-from the source tree root (a subdirectory is fine). For example, from the root
-of the ripple source tree:
-
-```
-mkdir my_build
-cd my_build
-```
-
-followed by:
-
-```
-cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug ..
-```
-
-or
-
-```
-cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Debug ..
-```
-
-`CMAKE_BUILD_TYPE` can be changed as desired for `Debug` vs.
-`Release` builds (all four standard cmake build types are supported).
-
-Once you have generated the build system, you can run the build via cmake:
-
-```
-cmake --build . -- -j 4
-```
-
-the `-j` parameter in this example tells the build tool to compile several
-files in parallel. This value should be chosen roughly based on the number of
-cores you have available and/or want to use for building.
-
-When the build completes succesfully, you will have a `rippled` executable in
-the current directory, which can be used to connect to the network (when
-properly configured) or to run unit tests.
-
-If you prefer to have an XCode project to use for building, ask CMake to
-generate that instead:
-
-```
-cmake -GXcode ..
-```
-
-After generation succeeds, the xcode project file can be opened and used to
-build/debug. However, just as with other generators, cmake knows how to build
-using the xcode project as well:
-
-```
-cmake --build . -- -jobs 4
-```
-
-This will invoke the `xcodebuild` utility to compile the project. See `xcodebuild
--help` for details about build options.
-
-#### Optional installation
-
-If you'd like to install the artifacts of the build, we have preliminary
-support for standard CMake installation targets. We recommend explicitly
-setting the installation location when configuring, e.g.:
-
-```
-cmake -DCMAKE_INSTALL_PREFIX=/opt/local ..
-```
-
-(change the destination as desired), and then build the `install` target:
-
-```
-cmake --build . --target install -- -jobs 4
-```
-
-#### Options During Configuration:
-
-The CMake file defines a number of configure-time options which can be
-examined by running `cmake-gui` or `ccmake` to generated the build. In
-particular, the `unity` option allows you to select between the unity and
-non-unity builds. `unity` builds are faster to compile since they combine
-multiple sources into a single compiliation unit - this is the default if you
-don't specify. `nounity` builds can be helpful for detecting include omissions
-or for finding other build-related issues, but aren't generally needed for
-testing and running.
-
-* `-Dunity=ON` to enable/disable unity builds (defaults to ON) 
-* `-Dassert=ON` to enable asserts
-* `-Djemalloc=ON` to enable jemalloc support for heap checking
-* `-Dsan=thread` to enable the thread sanitizer with clang
-* `-Dsan=address` to enable the address sanitizer with clang
-
-Several other infrequently used options are available - run `ccmake` or
-`cmake-gui` for a list of all options.
-
-## Unit Tests (Recommended)
-
-`rippled` builds a set of unit tests into the server executable. To run these unit
-tests after building, pass the `--unittest` option to the compiled `rippled`
-executable. The executable will exit with summary info after running the unit tests.
-
-
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
--- a/4
+++ b/4
@@ -0,0 +1,4 @@
+# By default, anyone can review changes.
+
+# The CI tooling team should review changes to the CI configuration.
+/.github/ @XRPLF/ci-tooling
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
--- a/750
+++ b/750
@@ -1,750 +0,0 @@
-#!/usr/bin/env groovy
-
-import groovy.json.JsonOutput
-import java.text.*
-
-all_status = [:]
-commit_id = ''
-git_fork = 'ripple'
-git_repo = 'rippled'
-//
-// this is not the actual token, but an ID/key into the jenkins
-// credential store which httpRequest can access.
-//
-github_cred = '6bd3f3b9-9a35-493e-8aef-975403c82d3e'
-//
-// root API url for our repo (default, overriden below)
-//
-github_api = 'https://api.github.com/repos/ripple/rippled'
-
-try {
-    stage ('Startup Checks') {
-        // here we check the commit author against collaborators
-        // we need a node to do this because readJSON requires
-        // a filesystem (although we just pass it text)
-        node {
-            checkout scm
-            commit_id = getCommitID()
-            //
-            // NOTE this getUserRemoteConfigs call requires a one-time
-            // In-process Script Approval (configure jenkins). We need this
-            // to detect the remote repo to interact with via the github API.
-            //
-            def remote_url = scm.getUserRemoteConfigs()[0].getUrl()
-            if (remote_url) {
-                echo "GIT URL scm: $remote_url"
-                git_fork = remote_url.tokenize('/')[2]
-                git_repo = remote_url.tokenize('/')[3].split('\\.')[0]
-                echo "GIT FORK: $git_fork"
-                echo "GIT REPO: $git_repo"
-                github_api = "https://api.github.com/repos/${git_fork}/${git_repo}"
-                echo "API URL REPO: $github_api"
-            }
-
-            if (env.CHANGE_AUTHOR) {
-                def collab_found = false;
-                //
-                // this means we have some sort of PR , so verify the author
-                //
-                echo "CHANGE AUTHOR ---> $CHANGE_AUTHOR"
-                echo "CHANGE TARGET ---> $CHANGE_TARGET"
-                echo "CHANGE ID ---> $CHANGE_ID"
-                //
-                // check the commit author against collaborators
-                // we need a node to do this because readJSON requires
-                // a filesystem (although we just pass it text)
-                //
-                def response = httpRequest(
-                    timeout: 10,
-                    authentication: github_cred,
-                    url: "${github_api}/collaborators")
-                def collab_data = readJSON(
-                    text: response.content)
-                for (collaborator in collab_data) {
-                    if (collaborator['login'] == "$CHANGE_AUTHOR") {
-                        echo "$CHANGE_AUTHOR is a collaborator!"
-                        collab_found = true;
-                        break;
-                    }
-                }
-
-                if (! collab_found) {
-                    echo "$CHANGE_AUTHOR is not a collaborator - waiting for manual approval."
-                    try {
-                        response = httpRequest(
-                            timeout: 10,
-                            authentication: github_cred,
-                            url: getCommentURL(),
-                            contentType: 'APPLICATION_JSON',
-                            httpMode: 'POST',
-                            requestBody: JsonOutput.toJson([
-                                body: """
-**Thank you** for your submission. It will be reviewed soon and submitted for processing in CI.
-"""
-                            ])
-                        )
-                    }
-                    catch (e) {
-                        echo 'had a problem interacting with github...comments are probably not updated'
-                    }
-
-                    try {
-                        input (
-                            message: "User $CHANGE_AUTHOR has submitted PR #$CHANGE_ID. " +
-                                "**Please review** the changes for any CI/security concerns " +
-                                "and then decide whether to proceed with building.")
-                    }
-                    catch(e) {
-                        def user = e.getCauses()[0].getUser().toString()
-                        all_status['startup'] = [
-                            false,
-                            'Approval Check',
-                            "Build aborted by [${user}]",
-                            "[console](${env.BUILD_URL}/console)"]
-                        error "Aborted by: [${user}]"
-                    }
-                }
-            }
-        }
-    }
-
-    stage ('Parallel Build') {
-        String[][] variants = [
-            ['gcc.Release'    ,'-Dassert=ON'     ,'MANUAL_TESTS=true'     ],
-            ['gcc.Debug'      ,'-Dcoverage=ON'                            ],
-            ['docs'                                                       ],
-            ['msvc.Debug'                                                 ],
-            ['msvc.Debug'     ,''                ,'NINJA_BUILD=true'      ],
-            ['msvc.Debug'     ,'-Dunity=OFF'                              ],
-            ['msvc.Release'                                               ],
-            ['clang.Debug'                                                ],
-            ['clang.Debug'    ,'-Dunity=OFF'                              ],
-            ['gcc.Debug'                                                  ],
-            ['gcc.Debug'      ,'-Dunity=OFF'                              ],
-            ['clang.Release'  ,'-Dassert=ON'                              ],
-            ['gcc.Release'    ,'-Dassert=ON'                              ],
-            ['gcc.Debug'      ,'-Dstatic=OFF'                             ],
-            ['gcc.Debug'      ,'-Dstatic=OFF -DBUILD_SHARED_LIBS=ON'      ],
-            ['gcc.Debug'      ,''                ,'NINJA_BUILD=true'      ],
-            ['clang.Debug'      ,'-Dunity=OFF -Dsan=address'   ,'PARALLEL_TESTS=false', 'DEBUGGER=false'],
-            ['clang.Debug'      ,'-Dunity=OFF -Dsan=undefined' ,'PARALLEL_TESTS=false'],
-            // TODO - tsan runs currently fail/hang
-            //['clang.Debug'      ,'-Dunity=OFF -Dsan=thread'    ,'PARALLEL_TESTS=false'],
-        ]
-
-        // create a map of all builds
-        // that we want to run. The map
-        // is string keys and node{} object values
-        def builds = [:]
-        for (int index = 0; index < variants.size(); index++) {
-            def bldtype = variants[index][0]
-            def cmake_extra = variants[index].size() > 1 ? variants[index][1] : ''
-            def bldlabel = bldtype + cmake_extra
-            def extra_env = variants[index].size() > 2 ? variants[index][2..-1] : []
-            for (int j = 0; j < extra_env.size(); j++) {
-                bldlabel += "_" + extra_env[j]
-            }
-            bldlabel = bldlabel.replace('-', '_')
-            bldlabel = bldlabel.replace(' ', '')
-            bldlabel = bldlabel.replace('=', '_')
-
-            def compiler = getFirstPart(bldtype)
-            def config = getSecondPart(bldtype)
-            if (compiler == 'docs') {
-                compiler = 'gcc'
-            }
-            def cc =
-                (compiler == 'clang') ? '/opt/llvm-5.0.1/bin/clang' : 'gcc'
-            def cxx =
-                (compiler == 'clang') ? '/opt/llvm-5.0.1/bin/clang++' : 'g++'
-            def ucc = isNoUnity(cmake_extra) ? 'true' : 'false'
-            def node_type =
-                (compiler == 'msvc') ? 'rippled-win' : 'rippled-dev'
-            // the default disposition for parallel test..disabled
-            // for coverage, enabled otherwise. Can still be overridden
-            // by explicitly setting with extra env settings above.
-            def pt = isCoverage(cmake_extra) ? 'false' : 'true'
-            def max_minutes = 25
-
-            def env_vars = [
-                "BUILD_TYPE=${config}",
-                "COMPILER=${compiler}",
-                "PARALLEL_TESTS=${pt}",
-                'BUILD=cmake',
-                "MAX_TIME=${max_minutes}m",
-                "BUILD_DIR=${bldlabel}",
-                "CMAKE_EXTRA_ARGS=-Dwerr=ON ${cmake_extra}",
-                'VERBOSE_BUILD=true']
-
-            builds[bldlabel] = {
-                node(node_type) {
-                    checkout scm
-                    dir ('build') {
-                        deleteDir()
-                    }
-                    def cdir = upDir(pwd())
-                    echo "BASEDIR: ${cdir}"
-                    echo "COMPILER: ${compiler}"
-                    echo "BUILD_TYPE: ${config}"
-                    echo "USE_CC: ${ucc}"
-                    if (compiler == 'msvc') {
-                        env_vars.addAll([
-                            'BOOST_ROOT=c:\\lib\\boost_1_67',
-                            'PROJECT_NAME=rippled',
-                            'MSBUILDDISABLENODEREUSE=1',  // this ENV setting is probably redundant since we also pass /nr:false to msbuild
-                            'OPENSSL_ROOT=c:\\OpenSSL-Win64'])
-                    }
-                    else {
-                        env_vars.addAll([
-                            'NINJA_BUILD=false',
-                            "CCACHE_BASEDIR=${cdir}",
-                            'PLANTUML_JAR=/opt/plantuml/plantuml.jar',
-                            'APP_ARGS=--unittest-ipv6',
-                            'CCACHE_NOHASHDIR=true',
-                            "CC=${cc}",
-                            "CXX=${cxx}",
-                            'LCOV_ROOT=""',
-                            'PATH+CMAKE_BIN=/opt/local/cmake',
-                            'GDB_ROOT=/opt/local/gdb',
-                            'BOOST_ROOT=/opt/local/boost_1_67_0',
-                            "USE_CCACHE=${ucc}"])
-                    }
-
-                    if (extra_env.size() > 0) {
-                        env_vars.addAll(extra_env)
-                    }
-
-                    withCredentials(
-                        [string(
-                            credentialsId: 'RIPPLED_CODECOV_TOKEN',
-                            variable: 'CODECOV_TOKEN')])
-                    {
-                        withEnv(env_vars) {
-                            myStage(bldlabel)
-                            try {
-                                timeout(
-                                  time: max_minutes * 2,
-                                  units: 'MINUTES')
-                                {
-                                    if (compiler == 'msvc') {
-                                        powershell "Remove-Item -Path \"${bldlabel}.txt\" -Force -ErrorAction Ignore"
-                                        // we capture stdout to variable because I could
-                                        // not figure out how to make powershell redirect internally
-                                        output = powershell (
-                                                returnStdout: true,
-                                                script: windowsBuildCmd())
-                                        // if the powershell command fails (has nonzero exit)
-                                        // then the command above throws, we don't get our output,
-                                        // and we never create this output file.
-                                        //  SEE https://issues.jenkins-ci.org/browse/JENKINS-44930
-                                        // Alternatively, figure out how to reliably redirect
-                                        // all output above to a file (Start/Stop transcript does not work)
-                                        writeFile(
-                                            file: "${bldlabel}.txt",
-                                            text: output)
-                                    }
-                                    else {
-                                        sh "rm -fv ${bldlabel}.txt"
-                                        // execute the bld command in a redirecting shell
-                                        // to capture output
-                                        sh redhatBuildCmd(bldlabel)
-                                    }
-                                }
-                            }
-                            finally {
-                                if (bldtype == 'docs') {
-                                    publishHTML(
-                                        allowMissing: true,
-                                        alwaysLinkToLastBuild: false,
-                                        keepAll: true,
-                                        reportName:  'Doxygen',
-                                        reportDir:   'build/docs/html_doc',
-                                        reportFiles: 'index.html')
-                                }
-                                def envs = ''
-                                for (int j = 0; j < extra_env.size(); j++) {
-                                    envs += ", <br/>" + extra_env[j]
-                                }
-                                def cmake_txt = cmake_extra
-                                if (cmake_txt != '') {
-                                    cmake_txt = " <br/>" + cmake_txt
-                                }
-                                def st = reportStatus(bldlabel, bldtype + cmake_txt + envs, env.BUILD_URL)
-                                lock('rippled_dev_status') {
-                                    all_status[bldlabel] = st
-                                }
-                            } //try-catch-finally
-                        } //withEnv
-                    } //withCredentials
-                } //node
-            } //builds item
-        } //for variants
-
-        // Also add a single build job for doing the RPM build
-        // on a docker node
-        builds['rpm'] = {
-            node('docker') {
-                def bldlabel = 'rpm'
-                def remote =
-                    (git_fork == 'ripple') ? 'origin' : git_fork
-
-                withCredentials(
-                    [string(
-                        credentialsId: 'RIPPLED_RPM_ROLE_ID',
-                        variable: 'ROLE_ID')])
-                {
-                    withEnv([
-                        'docker_image=artifactory.ops.ripple.com:6555/rippled-rpm-builder:latest',
-                        "git_commit=${commit_id}",
-                        "git_remote=${remote}",
-                        "rpm_release=${env.BUILD_ID}"])
-                    {
-                        try {
-                            sh "rm -fv ${bldlabel}.txt"
-                            sh "if [ -d rpm-out ]; then rm -rf rpm-out; fi"
-                            sh rpmBuildCmd(bldlabel)
-                        }
-                        finally {
-                            def st = reportStatus(bldlabel, bldlabel, env.BUILD_URL)
-                            lock('rippled_dev_status') {
-                                all_status[bldlabel] = st
-                            }
-                            archiveArtifacts(
-                                artifacts: 'rpm-out/*.rpm',
-                                allowEmptyArchive: true)
-                        }
-                    } //withEnv
-                } //withCredentials
-            } //node
-        }
-
-        // this actually executes all the builds we just defined
-        // above, in parallel as slaves are available
-        parallel builds
-    }
-}
-finally {
-    // anything here should run always...
-    stage ('Final Status') {
-        node {
-            def results = makeResultText()
-            try {
-                def res = getCommentID() //get array return b/c jenkins does not allow multiple direct return/assign
-                def comment_id = res[0]
-                def url_comment = res[1]
-                def mode = 'PATCH'
-                if (comment_id == 0) {
-                    echo 'no existing status comment found'
-                    mode =  'POST'
-                }
-
-                def body = JsonOutput.toJson([
-                    body: results
-                ])
-
-                response = httpRequest(
-                    timeout: 10,
-                    authentication: github_cred,
-                    url: url_comment,
-                    contentType: 'APPLICATION_JSON',
-                    httpMode: mode,
-                    requestBody: body)
-            }
-            catch (e) {
-                echo 'had a problem interacting with github...status is probably not updated'
-            }
-        }
-    }
-}
-
-// ---------------
-// util functions
-// ---------------
-def myStage(name) {
-    echo """
-+++++++++++++++++++++++++++++++++++++++++
-  >> building ${name}
-+++++++++++++++++++++++++++++++++++++++++
-"""
-}
-
-def printGitInfo(id, log) {
-    echo """
-+++++++++++++++++++++++++++++++++++++++++
-  >> Building commit ID ${id}
-  >>
-${log}
-+++++++++++++++++++++++++++++++++++++++++
-"""
-}
-
-def makeResultText () {
-    def start_time = new Date()
-    def sdf = new SimpleDateFormat('yyyyMMdd - HH:mm:ss')
-    def datestamp = sdf.format(start_time)
-
-    def results = """
-## Jenkins Build Summary
-
-Built from [this commit](https://github.com/${git_fork}/${git_repo}/commit/${commit_id})
-
-Built at __${datestamp}__
-
-### Test Results
-
-Build Type | Log | Result | Status
---------- | --- | ------ | ------
-"""
-    for ( e in all_status) {
-        results += e.value[1] + ' | ' + e.value[3] + ' | ' + e.value[2] + ' | ' +
-            (e.value[0] ? 'PASS :white_check_mark: ' : 'FAIL :red_circle: ') + '\n'
-    }
-    results += '\n'
-    echo 'FINAL BUILD RESULTS'
-    echo results
-    results
-}
-
-def getCommentURL () {
-    def url_c = ''
-    if (env.CHANGE_ID && env.CHANGE_ID ==~ /\d+/) {
-        //
-        // CHANGE_ID indicates we are building a PR
-        // find PR comments
-        //
-        def resp = httpRequest(
-            timeout: 10,
-            authentication: github_cred,
-            url: "${github_api}/pulls/$CHANGE_ID")
-        def result = readJSON(text: resp.content)
-        //
-        // follow issue comments link
-        //
-        url_c = result['_links']['issue']['href'] + '/comments'
-    }
-    else {
-        //
-        // if not a PR, just search comments for our commit ID
-        //
-        url_c =
-            "${github_api}/commits/${commit_id}/comments"
-    }
-    url_c
-}
-
-def getCommentID () {
-    def url_c = getCommentURL()
-    def response = httpRequest(
-        timeout: 10,
-        authentication: github_cred,
-        url: url_c)
-    def data = readJSON(text: response.content)
-    def comment_id = 0
-    // see if we can find and existing comment here with
-    // a heading that matches ours...
-    for (comment in data) {
-        if (comment['body'] =~ /(?m)^##\s+Jenkins Build/) {
-            comment_id = comment['id']
-            echo "existing status comment ${comment_id} found"
-            url_c = comment['url']
-            break;
-        }
-    }
-    [comment_id, url_c]
-}
-
-def getCommitID () {
-    def cid = sh (
-        script: 'git rev-parse HEAD',
-        returnStdout: true)
-    cid = cid.trim()
-    echo "commit ID is ${cid}"
-    commit_log = sh (
-         script: "git show --name-status ${cid}",
-         returnStdout: true)
-    printGitInfo (cid, commit_log)
-    cid
-}
-
-@NonCPS
-def getResults(text, label) {
-    // example:
-    ///   194.5s, 154 suites, 948 cases, 360485 tests total, 0 failures
-    // or build log format:
-    //    [msvc.release] 71.3s, 162 suites, 995 cases, 318901 tests total, 1 failure
-    def matcher =
-        text == '' ?
-        manager.getLogMatcher(/\[${label}\].+?(\d+) case[s]?, (\d+) test[s]? total, (\d+) (failure(s?))/) :
-        text =~ /(\d+) case[s]?, (\d+) test[s]? total, (\d+) (failure(s?))/
-    matcher ? matcher[0][1] + ' cases, ' + matcher[0][3] + ' failed' : 'no test results'
-}
-
-@NonCPS
-def getFailures(text, label) {
-    // [see above for format]
-    def matcher =
-        text == '' ?
-        manager.getLogMatcher(/\[${label}\].+?(\d+) test[s]? total, (\d+) (failure(s?))/) :
-        text =~ /(\d+) test[s]? total, (\d+) (failure(s?))/
-    // if we didn't match, then return 1 since something is
-    // probably wrong, e.g. maybe the build failed...
-    matcher ? matcher[0][2] as Integer : 1i
-}
-
-@NonCPS
-def getTime(text, label) {
-    // look for text following a label 'real' for
-    // wallclock time. Some `time`s report fractional
-    // seconds and we can omit those in what we report
-    def matcher =
-        text == '' ?
-        manager.getLogMatcher(/(?m)^\[${label}\]\s+real\s+(.+)\.(\d+?)[s]?/) :
-        text =~ /(?m)^real\s+(.+)\.(\d+?)[s]?/
-    if (matcher) {
-        return matcher[0][1] + 's'
-    }
-
-    // alternatively, look for powershell elapsed time
-    // format, e.g. :
-    //    TotalSeconds      : 523.2140529
-    def matcher2 =
-        text == '' ?
-        manager.getLogMatcher(/(?m)^\[${label}\]\s+TotalSeconds\s+:\s+(\d+)\.(\d+?)?/) :
-        text =~ /(?m)^TotalSeconds\s+:\s+(\d+)\.(\d+?)?/
-    matcher2 ? matcher2[0][1] + 's' : 'n/a'
-}
-
-@NonCPS
-def getFirstPart(bld) {
-    def matcher = bld =~ /^(.+?)\.(.+)$/
-    matcher ? matcher[0][1] : bld
-}
-
-@NonCPS
-def isNoUnity(bld) {
-    def matcher = bld =~ /-Dunity=(off|OFF)/
-    matcher ? true : false
-}
-
-@NonCPS
-def isCoverage(bld) {
-    def matcher = bld =~ /-Dcoverage=(on|ON)/
-    matcher ? true : false
-}
-
-@NonCPS
-def getSecondPart(bld) {
-    def matcher = bld =~ /^(.+?)\.(.+)$/
-    matcher ? matcher[0][2] : bld
-}
-
-// because I can't seem to find path manipulation
-// functions in groovy....
-@NonCPS
-def upDir(path) {
-    def matcher = path =~ /^(.+)\/(.+?)/
-    matcher ? matcher[0][1] : path
-}
-
-// the shell command used for building on redhat
-def redhatBuildCmd(bldlabel) {
-'''\
-#!/bin/bash
-set -ex
-log_file=''' + "${bldlabel}.txt" + '''
-exec 3>&1 1>>${log_file} 2>&1
-ccache -s
-source /opt/rh/devtoolset-7/enable
-/usr/bin/time -p ./bin/ci/ubuntu/build-and-test.sh 2>&1
-ccache -s
-'''
-}
-
-// the powershell command used for building an RPM
-def windowsBuildCmd() {
-'''
-# Enable streams 3-6
-$WarningPreference = 'Continue'
-$VerbosePreference = 'Continue'
-$DebugPreference = 'Continue'
-$InformationPreference = 'Continue'
-
-Invoke-BatchFile "${env:ProgramFiles(x86)}\\Microsoft Visual Studio\\2017\\Community\\VC\\Auxiliary\\Build\\vcvarsall.bat" x86_amd64
-Get-ChildItem env:* | Sort-Object name
-cl
-cmake --version
-New-Item -ItemType Directory -Force -Path "build/$env:BUILD_DIR" -ErrorAction Stop
-$sw = [Diagnostics.Stopwatch]::StartNew()
-try {
-    Push-Location "build/$env:BUILD_DIR"
-    if ($env:NINJA_BUILD -eq "true") {
-        Invoke-Expression "& cmake -G`"Ninja`" -DCMAKE_BUILD_TYPE=$env:BUILD_TYPE -DCMAKE_VERBOSE_MAKEFILE=ON $env:CMAKE_EXTRA_ARGS ../.."
-    }
-    else {
-        Invoke-Expression "& cmake -G`"Visual Studio 15 2017 Win64`" -DCMAKE_VERBOSE_MAKEFILE=ON $env:CMAKE_EXTRA_ARGS ../.."
-    }
-    if ($LastExitCode -ne 0) { throw "CMake failed" }
-
-    ## as of 01/2018, DO NOT USE cmake to run the actual build step. for some
-    ## reason, cmake spawning the build under jenkins causes MSBUILD/ninja to
-    ## get stuck at the end of the build. Perhaps cmake is spawning
-    ## incorrectly or failing to pass certain params
-
-    if ($env:NINJA_BUILD -eq "true") {
-        ninja -j $env:NUMBER_OF_PROCESSORS -v
-    }
-    else {
-        msbuild /fl /m /nr:false /p:Configuration="$env:BUILD_TYPE" /p:Platform=x64 /p:GenerateFullPaths=True /v:normal /nologo /clp:"ShowCommandLine;DisableConsoleColor" "$env:PROJECT_NAME.vcxproj"
-    }
-    if ($LastExitCode -ne 0) { throw "CMake build failed" }
-
-    $exe = "./$env:BUILD_TYPE/$env:PROJECT_NAME"
-    if ($env:NINJA_BUILD -eq "true") {
-        $exe = "./$env:PROJECT_NAME"
-    }
-    "Exe is at $exe"
-    $params = '--unittest', '--quiet', '--unittest-log'
-    if ($env:PARALLEL_TESTS -eq "true") {
-        $params = $params += "--unittest-jobs=$env:NUMBER_OF_PROCESSORS"
-    }
-    & $exe $params
-    if ($LastExitCode -ne 0) { throw "Unit tests failed" }
-}
-catch {
-    throw
-}
-finally {
-    $sw.Stop()
-    $sw.Elapsed
-    Pop-Location
-}
-'''
-}
-
-// the shell command used for building an RPM
-def rpmBuildCmd(bldlabel) {
-'''\
-#!/bin/bash
-set -ex
-log_file=''' + "${bldlabel}.txt" + '''
-exec 3>&1 1>>${log_file} 2>&1
-
-# Vault Steps
-SECRET_ID=$(cat /.vault/rippled-build-role/secret-id)
-export VAULT_TOKEN=$(/usr/local/ripple/ops-toolbox/vault/vault_approle_auth -r ${ROLE_ID} -s ${SECRET_ID} -t)
-/usr/local/ripple/ops-toolbox/vault/vault_get_sts_token.py -r rippled-build-role
-
-mkdir -p rpm-out
-
-docker pull "${docker_image}"
-
-echo "Running build container"
-
-docker run --rm \
-v $PWD/rpm-out:/opt/rippled-rpm/out \
-e "GIT_COMMIT=$git_commit" \
-e "GIT_REMOTE=$git_remote" \
-e "RPM_RELEASE=$rpm_release" \
-"${docker_image}"
-
-. rpm-out/build_vars
-
-cd rpm-out
-tar xvf rippled-*.tar.gz
-ls -la *.rpm
-#################################
-## for now we don't want the src
-## and debugsource rpms for testing
-## or archiving...
-#################################
-rm rippled-debugsource*.rpm
-rm *.src.rpm
-mkdir rpm-main
-cp *.rpm rpm-main
-cd rpm-main
-cd ../..
-
-cat > test_rpm.sh << "EOL"
-#!/bin/bash
-
-function error {
-  echo $1
-  exit 1
-}
-
-yum install -y yum-utils
-rpm -i /opt/rippled-rpm/*.rpm
-rc=$?; if [[ $rc != 0 ]]; then
-  error "error installing rpms"
-fi
-
-/opt/ripple/bin/rippled --unittest
-rc=$?; if [[ $rc != 0 ]]; then
-  error "rippled --unittest failed"
-fi
-
-/opt/ripple/bin/validator-keys --unittest
-rc=$?; if [[ $rc != 0 ]]; then
-  error "validator-keys --unittest failed"
-fi
-
-EOL
-
-chmod +x test_rpm.sh
-
-echo "Running test container"
-
-docker run --rm \
-v $PWD/rpm-out/rpm-main:/opt/rippled-rpm \
-v $PWD:/opt/rippled --entrypoint /opt/rippled/test_rpm.sh \
-centos:latest
-'''
-}
-
-// post processing step after each build:
-//   * archives the log file
-//   * adds short description/status to build status
-//   * returns an array of result info to add to the all_build summary
-def reportStatus(label, type, bldurl) {
-    def outstr = ''
-    def loglink = "[console](${bldurl}/console)"
-    def logfile = "${label}.txt"
-    if ( fileExists(logfile) ) {
-        archiveArtifacts( artifacts: logfile )
-        outstr = readFile(logfile)
-        loglink = "[logfile](${bldurl}/artifact/${logfile})"
-    }
-    def st = getResults(outstr, label)
-    def time = getTime(outstr, label)
-    def fail_count = getFailures(outstr, label)
-    outstr = null
-    def txtcolor =
-        fail_count == 0 ? 'DarkGreen' : 'Crimson'
-    def shortbld = label
-    // this is just an attempt to shorten the
-    // summary text label to the point of absurdity..
-    shortbld = shortbld.replace('Debug', 'dbg')
-    shortbld = shortbld.replace('Release', 'rel')
-    shortbld = shortbld.replace('true', 'Y')
-    shortbld = shortbld.replace('false', 'N')
-    shortbld = shortbld.replace('Dcoverage', 'cov')
-    shortbld = shortbld.replace('Dassert', 'asrt')
-    shortbld = shortbld.replace('Dunity', 'unty')
-    shortbld = shortbld.replace('Dsan=address', 'asan')
-    shortbld = shortbld.replace('Dsan=thread', 'tsan')
-    shortbld = shortbld.replace('Dsan=undefined', 'ubsan')
-    shortbld = shortbld.replace('PARALLEL_TEST', 'PL')
-    shortbld = shortbld.replace('MANUAL_TESTS', 'MAN')
-    shortbld = shortbld.replace('NINJA_BUILD', 'ninja')
-    shortbld = shortbld.replace('DEBUGGER', 'gdb')
-    shortbld = shortbld.replace('ON', 'Y')
-    shortbld = shortbld.replace('OFF', 'N')
-    manager.addShortText(
-        "${shortbld}: ${st}, t: ${time}",
-        txtcolor,
-        'white',
-        '0px',
-        'white')
-    [fail_count == 0, type, "${st}, t: ${time}", loglink]
-}
-
--- a/77
+++ b/77
@@ -1,77 +0,0 @@
-The accompanying files under various copyrights.
-
-Copyright (c) 2012, 2013, 2014 Ripple Labs Inc.
-
-Permission to use, copy, modify, and distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-The accompanying files incorporate work covered by the following copyright
-and previous license notice:
-
-Copyright (c) 2011 Arthur Britto, David Schwartz, Jed McCaleb,
-Vinnie Falco, Bob Way, Eric Lombrozo, Nikolaos D. Bougalis, Howard Hinnant
-
-Some code from Raw Material Software, Ltd., provided under the terms of the
-  ISC License. See the corresponding source files for more details.
-  Copyright (c) 2013 - Raw Material Software Ltd.
-  Please visit http://www.juce.com
-
-Some code from ASIO examples:
-// Copyright (c) 2003-2011 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-Some code from Bitcoin:
-// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2011 The Bitcoin developers
-// Distributed under the MIT/X11 software license, see the accompanying
-// file license.txt or http://www.opensource.org/licenses/mit-license.php.
-
-Some code from Tom Wu:
-This software is covered under the following copyright:
-
-/*
- * Copyright (c) 2003-2005  Tom Wu
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
- * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
- * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
- *
- * IN NO EVENT SHALL TOM WU BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
- * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER
- * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF
- * THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT
- * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * In addition, the following condition applies:
- *
- * All redistributions must retain an intact copy of this copyright notice
- * and disclaimer.
- */
-
-Address all questions regarding this license to:
-
-  Tom Wu
-  tjw@cs.Stanford.EDU
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -0,0 +1,16 @@
+ISC License
+
+Copyright (c) 2011, Arthur Britto, David Schwartz, Jed McCaleb, Vinnie Falco, Bob Way, Eric Lombrozo, Nikolaos D. Bougalis, Howard Hinnant.
+Copyright (c) 2012-present, the XRP Ledger developers.
+
+Permission to use, copy, modify, and distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
--- a/OpenTelemetryPlan/00-tracing-fundamentals.md
+++ b/OpenTelemetryPlan/00-tracing-fundamentals.md
@@ -0,0 +1,565 @@
+# Distributed Tracing Fundamentals
+
+> **Parent Document**: [OpenTelemetryPlan.md](./OpenTelemetryPlan.md)
+> **Next**: [Architecture Analysis](./01-architecture-analysis.md)
+
+---
+
+## What is Distributed Tracing?
+
+Distributed tracing is a method for tracking data objects as they flow through distributed systems. In a network like XRP Ledger, a single transaction touches multiple independent nodes—each with no shared memory or logging. Distributed tracing connects these dots.
+
+**Without tracing:** You see isolated logs on each node with no way to correlate them.
+
+**With tracing:** You see the complete journey of a transaction or an event across all nodes it touched.
+
+---
+
+## Actors and Actions at a Glance
+
+### Actors
+
+| Who (Plain English)                            | Technical Term  |
+| ---------------------------------------------- | --------------- |
+| A single unit of work being tracked            | Span            |
+| The complete journey of a request              | Trace           |
+| Data that links spans across services          | Trace Context   |
+| Code that creates spans and propagates context | Instrumentation |
+| Service that receives and processes traces     | Collector       |
+| Storage and visualization system               | Backend (Tempo) |
+| Decision logic for which traces to keep        | Sampler         |
+
+### Actions
+
+| What Happens (Plain English)            | Technical Term          |
+| --------------------------------------- | ----------------------- |
+| Start tracking a new operation          | Create a Span           |
+| Connect a child operation to its parent | Set `parent_span_id`    |
+| Group all related operations together   | Share a `trace_id`      |
+| Pass tracking data between services     | Context Propagation     |
+| Decide whether to record a trace        | Sampling (Head or Tail) |
+| Send completed traces to storage        | Export (OTLP)           |
+
+---
+
+## Core Concepts
+
+### 1. Trace
+
+A **trace** represents the entire journey of a request through the system. It has a unique `trace_id` that stays constant across all nodes.
+
+```
+Trace ID: abc123
+├── Node A: received transaction
+├── Node B: relayed transaction
+├── Node C: included in consensus
+└── Node D: applied to ledger
+```
+
+### 2. Span
+
+A **span** represents a single unit of work within a trace. Each span has:
+
+| Attribute        | Description                      | Example                    |
+| ---------------- | -------------------------------- | -------------------------- |
+| `trace_id`       | Identifies the trace             | `event123`                 |
+| `span_id`        | Unique identifier                | `span456`                  |
+| `parent_span_id` | Parent span (if any)             | `p_span123`                |
+| `name`           | Operation name                   | `rpc.submit`               |
+| `start_time`     | When work began (local time)     | `2024-01-15T10:30:00Z`     |
+| `end_time`       | When work completed (local time) | `2024-01-15T10:30:00.050Z` |
+| `attributes`     | Key-value metadata               | `tx_hash=ABC...`           |
+| `status`         | OK, ERROR MSG                    | `OK`                       |
+
+### 3. Trace Context
+
+**Trace context** is the data that propagates between services to link spans together. It contains:
+
+- `trace_id` - The trace this span belongs to
+- `span_id` - The current span (becomes parent for child spans)
+- `trace_flags` - Sampling decisions
+
+---
+
+## How Spans Form a Trace
+
+Spans have parent-child relationships forming a tree structure:
+
+```mermaid
+flowchart TB
+    subgraph trace["Trace: abc123"]
+        A["tx.submit<br/>span_id: 001<br/>50ms"] --> B["tx.validate<br/>span_id: 002<br/>5ms"]
+        A --> C["tx.relay<br/>span_id: 003<br/>10ms"]
+        A --> D["tx.apply<br/>span_id: 004<br/>30ms"]
+        D --> E["ledger.update<br/>span_id: 005<br/>20ms"]
+    end
+
+    style A fill:#0d47a1,stroke:#082f6a,color:#ffffff
+    style B fill:#1b5e20,stroke:#0d3d14,color:#ffffff
+    style C fill:#1b5e20,stroke:#0d3d14,color:#ffffff
+    style D fill:#1b5e20,stroke:#0d3d14,color:#ffffff
+    style E fill:#bf360c,stroke:#8c2809,color:#ffffff
+```
+
+**Reading the diagram:**
+
+- **tx.submit (blue, root)**: The top-level span representing the entire transaction submission; all other spans are its descendants.
+- **tx.validate, tx.relay, tx.apply (green)**: Direct children of tx.submit, representing the three main stages -- validation, relay to peers, and application to the ledger.
+- **ledger.update (red)**: A grandchild span nested under tx.apply, representing the actual ledger state mutation triggered by applying the transaction.
+- **Arrows (parent to child)**: Each arrow indicates a parent-child span relationship where the parent's completion depends on the child finishing.
+
+The same trace visualized as a **timeline (Gantt chart)**:
+
+```
+Time →   0ms    10ms    20ms    30ms    40ms    50ms
+         ├───────────────────────────────────────────┤
+tx.submit│▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓│
+         ├─────┤
+tx.valid │▓▓▓▓▓│
+         │     ├──────────┤
+tx.relay │     │▓▓▓▓▓▓▓▓▓▓│
+         │               ├────────────────────────────┤
+tx.apply │               │▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓│
+         │                         ├──────────────────┤
+ledger   │                         │▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓│
+```
+
+---
+
+## Span Relationships
+
+Spans don't always form simple parent-child trees. Distributed tracing defines several relationship types to capture different causal patterns:
+
+### 1. Parent-Child (ChildOf)
+
+The default relationship. The parent span **depends on** or **contains** the child span. The child runs within the scope of the parent.
+
+```
+tx.submit (parent)
+├── tx.validate (child)     ← parent waits for this
+├── tx.relay (child)        ← parent waits for this
+└── tx.apply (child)        ← parent waits for this
+```
+
+**When to use:** Synchronous calls, nested operations, any case where the parent's completion depends on the child.
+
+### 2. Follows-From
+
+A causal relationship where the first span **triggers** the second, but does **not wait** for it. The originator fires and moves on.
+
+```
+Time →
+
+tx.receive [=======]
+                     ↓ triggers (follows-from)
+              tx.relay   [===========]   ← runs independently
+```
+
+**When to use:** Asynchronous jobs, queued work, fire-and-forget patterns. For example, a node receives a transaction and queues it for relay — the relay span _follows from_ the receive span but the receiver doesn't wait for relaying to complete.
+
+> **OpenTracing** defined `FollowsFrom` as a first-class reference type alongside `ChildOf`.
+> **OpenTelemetry** represents this using **Span Links** with descriptive attributes instead (see below).
+
+### 3. Span Links (Cross-Trace and Non-Hierarchical)
+
+Links connect spans that are **causally related but not in a parent-child hierarchy**. Unlike parent-child, links can cross trace boundaries.
+
+```
+Trace A                          Trace B
+──────                           ──────
+batch.schedule                   batch.execute
+├─ item.enqueue (span X)    ┌──► process.item
+├─ item.enqueue (span Y) ───┤    (links to X, Y, Z)
+├─ item.enqueue (span Z)    └──►
+```
+
+**Use cases:**
+
+| Pattern              | Description                                                                 |
+| -------------------- | --------------------------------------------------------------------------- |
+| **Batch processing** | A batch span links back to all individual spans that contributed to it      |
+| **Fan-in**           | An aggregation span links to the multiple producer spans it merges          |
+| **Fan-out**          | Multiple downstream spans link back to the single span that triggered them  |
+| **Async handoff**    | A deferred job links back to the request that queued it (follows-from)      |
+| **Cross-trace**      | Correlating spans across independent traces (e.g., retries, related events) |
+
+**Link structure:** Each link carries the target span's context plus optional attributes:
+
+```
+Link {
+    trace_id:   <target trace>
+    span_id:    <target span>
+    attributes: { "link.description": "triggered by batch scheduler" }
+}
+```
+
+### Relationship Summary
+
+```mermaid
+flowchart LR
+    subgraph parent_child["Parent-Child"]
+        direction TB
+        P["Parent"] --> C["Child"]
+    end
+
+    subgraph follows_from["Follows-From"]
+        direction TB
+        A["Span A"] -.->|triggers| B["Span B"]
+    end
+
+    subgraph links["Span Links"]
+        direction TB
+        X["Span X\n(Trace 1)"] -.-|link| Y["Span Y\n(Trace 2)"]
+    end
+
+    parent_child ~~~ follows_from ~~~ links
+
+    style P fill:#0d47a1,stroke:#082f6a,color:#ffffff
+    style C fill:#1b5e20,stroke:#0d3d14,color:#ffffff
+    style A fill:#0d47a1,stroke:#082f6a,color:#ffffff
+    style B fill:#bf360c,stroke:#8c2809,color:#ffffff
+    style X fill:#4a148c,stroke:#38006b,color:#ffffff
+    style Y fill:#4a148c,stroke:#38006b,color:#ffffff
+```
+
+| Relationship     | Same Trace? | Dependency?                | OTel Mechanism    |
+| ---------------- | ----------- | -------------------------- | ----------------- |
+| **Parent-Child** | Yes         | Parent depends on child    | `parent_span_id`  |
+| **Follows-From** | Usually     | Causal but no dependency   | Link + attributes |
+| **Span Link**    | Either      | Correlation, no dependency | Link + attributes |
+
+---
+
+## Trace ID Generation
+
+A `trace_id` is a 128-bit (16-byte) identifier that groups all spans belonging to one logical operation. How it's generated determines how easily you can find and correlate traces later.
+
+### General Approaches
+
+#### 1. Random (W3C Default)
+
+Generate a random 128-bit ID when a trace starts. Standard approach for most services.
+
+```
+trace_id = random_128_bits()
+```
+
+| Pros                        | Cons                                          |
+| --------------------------- | --------------------------------------------- |
+| Simple, standard            | No natural correlation to domain events       |
+| Guaranteed unique per trace | If propagation is lost, trace is broken       |
+| Works with all OTel tooling | "Find trace for TX abc" requires index lookup |
+
+#### 2. Deterministic (Derived from Domain Data)
+
+Compute the trace_id from a hash of a natural identifier. Every node independently derives the **same** trace_id for the same event.
+
+```
+trace_id = SHA-256(domain_identifier)[0:16]   // truncate to 128 bits
+```
+
+| Pros                                                | Cons                                                       |
+| --------------------------------------------------- | ---------------------------------------------------------- |
+| Propagation-resilient — same ID computed everywhere | Same event processed twice (retry) shares trace_id         |
+| Natural search — domain ID maps directly to trace   | Non-standard (tooling assumes random)                      |
+| No coordination needed between nodes                | 256→128 bit truncation (collision risk negligible at ~2⁶⁴) |
+
+#### 3. Hybrid (Deterministic Prefix + Random Suffix)
+
+First 8 bytes derived from domain data, last 8 bytes random.
+
+```
+trace_id = SHA-256(domain_identifier)[0:8] || random_64_bits()
+```
+
+| Pros                                        | Cons                                     |
+| ------------------------------------------- | ---------------------------------------- |
+| Prefix search: "find all traces for TX abc" | Must propagate to maintain full trace_id |
+| Unique per processing instance              | More complex generation logic            |
+| Retries get distinct trace_ids              | Partial correlation only (prefix match)  |
+
+### XRPL Workflow Analysis
+
+XRPL has a unique advantage: its core workflows produce **globally unique 256-bit hashes** that are known on every node. This makes deterministic trace_id generation practical in ways most systems can't achieve.
+
+#### Natural Identifiers by Workflow
+
+| Workflow            | Natural Identifier                | Size       | Known at Start?               | Same on All Nodes?               |
+| ------------------- | --------------------------------- | ---------- | ----------------------------- | -------------------------------- |
+| **Transaction**     | Transaction hash (`tid_`)         | 256-bit    | Yes — computed before signing | Yes — hash of canonical tx data  |
+| **Consensus round** | Previous ledger hash + ledger seq | 256+32 bit | Yes — known when round opens  | Yes — all validators agree       |
+| **Validation**      | Ledger hash being validated       | 256-bit    | Yes — from consensus result   | Yes — same closed ledger         |
+| **Ledger catch-up** | Target ledger hash                | 256-bit    | Yes — we know what to fetch   | Yes — identifies ledger globally |
+
+#### Where These Identifiers Live in Code
+
+```
+Transaction:     STTx::getTransactionID()     → uint256 tid_
+                 TMTransaction::rawTransaction → recompute hash from bytes
+
+Consensus:       ConsensusProposal::prevLedger_ → uint256 (previous ledger hash)
+                 ConsensusProposal::position_   → uint256 (TxSet hash)
+                 LedgerHeader::seq              → uint32_t (ledger sequence)
+
+Validation:      STValidation::getLedgerHash()  → uint256
+                 STValidation::getNodeID()      → NodeID (160-bit)
+
+Ledger fetch:    InboundLedger constructor      → uint256 hash, uint32_t seq
+                 TMGetLedger::ledgerHash        → bytes (uint256)
+```
+
+### Recommended Strategy: Workflow-Scoped Deterministic
+
+Each workflow type derives its trace_id from its natural domain identifier:
+
+```
+Transaction trace:   trace_id = SHA-256("tx"    || tx_hash)[0:16]
+Consensus trace:     trace_id = SHA-256("cons"  || prev_ledger_hash || ledger_seq)[0:16]
+Ledger catch-up:     trace_id = SHA-256("fetch" || target_ledger_hash)[0:16]
+```
+
+The string prefix (`"tx"`, `"cons"`, `"fetch"`) prevents collisions between workflows that might share underlying hashes.
+
+**Why this works for XRPL:**
+
+1. **Propagation-resilient** — Even if a P2P message drops trace context, every node independently computes the same trace_id from the same tx_hash or ledger_hash. Spans still correlate.
+
+2. **Zero-cost search** — "Show me the trace for transaction ABC" becomes a direct lookup: compute `SHA-256("tx" || ABC)[0:16]` and query. No secondary index needed.
+
+3. **Cross-workflow linking via Span Links** — A consensus trace links to individual transaction traces. A validation span links to the consensus trace. This connects the full picture without forcing everything into one giant trace.
+
+### Cross-Workflow Correlation
+
+Each workflow gets its own trace. Span Links tie them together:
+
+```mermaid
+flowchart TB
+    subgraph tx_trace["Transaction Trace"]
+        direction LR
+        Tn["trace_id = f(tx_hash)"]:::note --> T1["tx.receive"] --> T2["tx.validate"] --> T3["tx.relay"]
+    end
+
+    subgraph cons_trace["Consensus Trace"]
+        direction LR
+        Cn["trace_id = f(prev_ledger, seq)"]:::note --> C1["cons.open"] --> C2["cons.propose"] --> C3["cons.accept"]
+    end
+
+    subgraph val_trace["Validation"]
+        direction LR
+        Vn["spans within consensus trace"]:::note --> V1["val.create"] --> V2["val.broadcast"]
+    end
+
+    subgraph fetch_trace["Catch-Up Trace"]
+        direction LR
+        Fn["trace_id = f(ledger_hash)"]:::note --> F1["fetch.request"] --> F2["fetch.receive"] --> F3["fetch.apply"]
+    end
+
+    C1 -.-|"span link\n(tx traces)"| T3
+    C3 --> V1
+    F1 -.-|"span link\n(target ledger)"| C3
+
+    classDef note fill:none,stroke:#888,stroke-dasharray:5 5,color:#333,font-style:italic
+    style T1 fill:#0d47a1,stroke:#082f6a,color:#ffffff
+    style T2 fill:#0d47a1,stroke:#082f6a,color:#ffffff
+    style T3 fill:#0d47a1,stroke:#082f6a,color:#ffffff
+    style C1 fill:#1b5e20,stroke:#0d3d14,color:#ffffff
+    style C2 fill:#1b5e20,stroke:#0d3d14,color:#ffffff
+    style C3 fill:#1b5e20,stroke:#0d3d14,color:#ffffff
+    style V1 fill:#bf360c,stroke:#8c2809,color:#ffffff
+    style V2 fill:#bf360c,stroke:#8c2809,color:#ffffff
+    style F1 fill:#4a148c,stroke:#38006b,color:#ffffff
+    style F2 fill:#4a148c,stroke:#38006b,color:#ffffff
+    style F3 fill:#4a148c,stroke:#38006b,color:#ffffff
+```
+
+**Reading the diagram:**
+
+- **Transaction Trace (blue)**: An independent trace whose `trace_id` is deterministically derived from the transaction hash. Contains receive, validate, and relay spans.
+- **Consensus Trace (green)**: An independent trace whose `trace_id` is derived from the previous ledger hash and sequence number. Covers the open, propose, and accept phases.
+- **Validation (red)**: Validation spans live within the consensus trace (not a separate trace). They are created after the accept phase completes.
+- **Catch-Up Trace (purple)**: An independent trace for ledger acquisition, derived from the target ledger hash. Used when a node is behind and fetching missing ledgers.
+- **Dotted arrows (span links)**: Cross-trace correlations. Consensus links to transaction traces it included; catch-up links to the consensus trace that produced the target ledger.
+- **Solid arrow (C3 to V1)**: A parent-child relationship -- validation spans are direct children of the consensus accept span within the same trace.
+
+**How a query flows:**
+
+```
+"Why was TX abc slow?"
+  1. Compute trace_id = SHA-256("tx" || abc)[0:16]
+  2. Find transaction trace → see it was included in consensus round N
+  3. Follow span link → consensus trace for round N
+  4. See which phase was slow (propose? accept?)
+  5. If a node was catching up, follow link → catch-up trace
+```
+
+### Trade-offs to Consider
+
+| Concern                       | Mitigation                                                                                                                    |
+| ----------------------------- | ----------------------------------------------------------------------------------------------------------------------------- |
+| **Retries get same trace_id** | Add `attempt` attribute to root span; spans have unique span_ids and timestamps                                               |
+| **256→128 bit truncation**    | Birthday-bound collision at ~2⁶⁴ operations — negligible for XRPL's throughput                                                |
+| **Non-standard generation**   | OTel spec allows any 16-byte non-zero value; tooling works on the hex string                                                  |
+| **Hash computation cost**     | SHA-256 is ~0.3μs per call; XRPL already computes these hashes for other purposes                                             |
+| **Late-binding identifiers**  | Ledger hash isn't known until after consensus — validation spans use ledger_seq as fallback, then link to the consensus trace |
+
+---
+
+## Distributed Traces Across Nodes
+
+In distributed systems like xrpld, traces span **multiple independent nodes**. The trace context must be propagated in network messages:
+
+```mermaid
+sequenceDiagram
+    participant Client
+    participant NodeA as Node A
+    participant NodeB as Node B
+    participant NodeC as Node C
+
+    Client->>NodeA: Submit TX<br/>(no trace context)
+
+    Note over NodeA: Creates new trace<br/>trace_id: abc123<br/>span: tx.receive
+
+    NodeA->>NodeB: Relay TX<br/>(trace_id: abc123, parent: 001)
+
+    Note over NodeB: Creates child span<br/>span: tx.relay<br/>parent_span_id: 001
+
+    NodeA->>NodeC: Relay TX<br/>(trace_id: abc123, parent: 001)
+
+    Note over NodeC: Creates child span<br/>span: tx.relay<br/>parent_span_id: 001
+
+    Note over NodeA,NodeC: All spans share trace_id: abc123<br/>enabling correlation across nodes
+```
+
+**Reading the diagram:**
+
+- **Client**: The external entity that submits a transaction. It does not carry trace context -- the trace originates at the first node.
+- **Node A**: The entry point that creates a new trace (trace_id: abc123) and the root span `tx.receive`. It relays the transaction to peers with trace context attached.
+- **Node B and Node C**: Peer nodes that receive the relayed transaction along with the propagated trace context. Each creates a child span under Node A's span, preserving the same `trace_id`.
+- **Arrows with trace context**: The relay messages carry `trace_id` and `parent_span_id`, allowing each downstream node to link its spans back to the originating span on Node A.
+
+---
+
+## Context Propagation
+
+For traces to work across nodes, **trace context must be propagated** in messages.
+
+### What's in the Context (~26 bytes)
+
+| Field         | Size     | Description                                             |
+| ------------- | -------- | ------------------------------------------------------- |
+| `trace_id`    | 16 bytes | Identifies the entire trace (constant across all nodes) |
+| `span_id`     | 8 bytes  | The sender's current span (becomes parent on receiver)  |
+| `trace_flags` | 1 byte   | Sampling decision (bit 0 = sampled; bits 1-7 reserved)  |
+| `trace_state` | variable | Optional vendor-specific data (typically omitted)       |
+
+### How span_id Changes at Each Hop
+
+Only **one** `span_id` travels in the context - the sender's current span. Each node:
+
+1. Extracts the received `span_id` and uses it as the `parent_span_id`
+2. Creates a **new** `span_id` for its own span
+3. Sends its own `span_id` as the parent when forwarding
+
+```
+Node A                      Node B                      Node C
+──────                      ──────                      ──────
+
+Span AAA                    Span BBB                    Span CCC
+   │                           │                           │
+   ▼                           ▼                           ▼
+Context out:                Context out:                Context out:
+├─ trace_id: abc123         ├─ trace_id: abc123         ├─ trace_id: abc123
+├─ span_id: AAA ──────────► ├─ span_id: BBB ──────────► ├─ span_id: CCC ──────►
+└─ flags: 01                └─ flags: 01                └─ flags: 01
+                               │                           │
+                          parent = AAA               parent = BBB
+```
+
+The `trace_id` stays constant, but `span_id` **changes at every hop** to maintain the parent-child chain.
+
+### Propagation Formats
+
+There are two patterns:
+
+### HTTP/RPC Headers (W3C Trace Context)
+
+```
+traceparent: 00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01
+             │  │                                │                │
+             │  │                                │                └── Flags (sampled)
+             │  │                                └── Parent span ID (16 hex)
+             │  └── Trace ID (32 hex)
+             └── Version
+```
+
+### Protocol Buffers (xrpld P2P messages)
+
+xrpld P2P messages such as `TMTransaction` carry the trace context in two added byte fields alongside the existing payload: `trace_parent` holds the W3C traceparent (`trace_id`, `span_id`, and `trace_flags`), and `trace_state` holds the optional W3C tracestate. Together they propagate the trace across the P2P boundary so a receiving node can attach its spans to the sender's span.
+
+---
+
+## Sampling
+
+Not every trace needs to be recorded. **Sampling** reduces overhead:
+
+### Head Sampling (at trace start)
+
+```
+Request arrives → Random N% chance → Record or skip entire trace
+```
+
+- ✅ Low overhead
+- ❌ May miss interesting traces
+
+> **xrpld note**: xrpld intentionally fixes head sampling at 100% (sample
+> everything) and does not expose a configurable ratio. A per-node ratio
+> would let different nodes make divergent keep/drop decisions for the same
+> distributed trace, producing broken/partial traces. xrpld uses a
+> `ParentBased` sampler so spans with a remote parent honor the upstream
+> decision. Volume reduction is delegated to collector-side tail sampling.
+
+### Tail Sampling (after trace completes)
+
+```
+Trace completes → Collector evaluates:
+                  - Error? → KEEP
+                  - Slow? → KEEP
+                  - Normal? → Sample 10%
+```
+
+- ✅ Never loses important traces
+- ❌ Higher memory usage at collector
+
+---
+
+## Key Benefits for xrpld
+
+| Challenge                          | How Tracing Helps                        |
+| ---------------------------------- | ---------------------------------------- |
+| "Where is my transaction?"         | Follow trace across all nodes it touched |
+| "Why was consensus slow?"          | See timing breakdown of each phase       |
+| "Which node is the bottleneck?"    | Compare span durations across nodes      |
+| "What happened during the outage?" | Correlate errors across the network      |
+
+---
+
+## Glossary
+
+| Term                 | Definition                                                          |
+| -------------------- | ------------------------------------------------------------------- |
+| **Trace**            | Complete journey of a request, identified by `trace_id`             |
+| **Span**             | Single operation within a trace                                     |
+| **Parent-Child**     | Span relationship where the parent depends on the child             |
+| **Follows-From**     | Causal relationship where originator doesn't wait for the result    |
+| **Span Link**        | Non-hierarchical connection between spans, possibly across traces   |
+| **Deterministic ID** | Trace ID derived from domain data (e.g., tx_hash) instead of random |
+| **Context**          | Data propagated between services (`trace_id`, `span_id`, flags)     |
+| **Instrumentation**  | Code that creates spans and propagates context                      |
+| **Collector**        | Service that receives, processes, and exports traces                |
+| **Backend**          | Storage/visualization system (Tempo)                                |
+| **Head Sampling**    | Sampling decision at trace start                                    |
+| **Tail Sampling**    | Sampling decision after trace completes                             |
+
+---
+
+_Next: [Architecture Analysis](./01-architecture-analysis.md)_ | _Back to: [Overview](./OpenTelemetryPlan.md)_
--- a/OpenTelemetryPlan/01-architecture-analysis.md
+++ b/OpenTelemetryPlan/01-architecture-analysis.md
@@ -0,0 +1,467 @@
+# Architecture Analysis
+
+> **Parent Document**: [OpenTelemetryPlan.md](./OpenTelemetryPlan.md)
+> **Related**: [Design Decisions](./02-design-decisions.md) | [Implementation Strategy](./03-implementation-strategy.md)
+
+---
+
+## 1.1 Current xrpld Architecture Overview
+
+> **WS** = WebSocket | **UNL** = Unique Node List | **TxQ** = Transaction Queue | **StatsD** = Statistics Daemon
+
+The xrpld node software consists of several interconnected components that need instrumentation for distributed tracing:
+
+```mermaid
+flowchart TB
+    subgraph xrpld["xrpld Node"]
+        subgraph services["Core Services"]
+            RPC["RPC Server<br/>(HTTP/WS/gRPC)"]
+            Overlay["Overlay<br/>(P2P Network)"]
+            Consensus["Consensus<br/>(RCLConsensus)"]
+            ValidatorList["ValidatorList<br/>(UNL Mgmt)"]
+        end
+
+        JobQueue["JobQueue<br/>(Thread Pool)"]
+
+        subgraph processing["Processing Layer"]
+            NetworkOPs["NetworkOPs<br/>(Tx Processing)"]
+            LedgerMaster["LedgerMaster<br/>(Ledger Mgmt)"]
+            NodeStore["NodeStore<br/>(Database)"]
+            InboundLedgers["InboundLedgers<br/>(Ledger Sync)"]
+        end
+
+        subgraph appservices["Application Services"]
+            PathFind["PathFinding<br/>(Payment Paths)"]
+            TxQ["TxQ<br/>(Fee Escalation)"]
+            LoadMgr["LoadManager<br/>(Fee/Load)"]
+        end
+
+        subgraph observability["Existing Observability"]
+            PerfLog["PerfLog<br/>(JSON)"]
+            Insight["Insight<br/>(StatsD)"]
+            Logging["Logging<br/>(Journal)"]
+        end
+
+        services --> JobQueue
+        JobQueue --> processing
+        JobQueue --> appservices
+    end
+
+    style xrpld fill:#424242,stroke:#212121,color:#ffffff
+    style services fill:#1565c0,stroke:#0d47a1,color:#ffffff
+    style processing fill:#2e7d32,stroke:#1b5e20,color:#ffffff
+    style appservices fill:#6a1b9a,stroke:#4a148c,color:#ffffff
+    style observability fill:#e65100,stroke:#bf360c,color:#ffffff
+```
+
+**Reading the diagram:**
+
+- **Core Services (blue)**: The entry points into xrpld -- RPC Server handles client requests, Overlay manages peer-to-peer networking, Consensus drives agreement, and ValidatorList manages trusted validators.
+- **JobQueue (center)**: The asynchronous thread pool that decouples Core Services from the Processing and Application layers. All work flows through it.
+- **Processing Layer (green)**: Core business logic -- NetworkOPs processes transactions, LedgerMaster manages ledger state, NodeStore handles persistence, and InboundLedgers synchronizes missing data.
+- **Application Services (purple)**: Higher-level features -- PathFinding computes payment routes, TxQ manages fee-based queuing, and LoadManager tracks server load.
+- **Existing Observability (orange)**: The current monitoring stack (PerfLog, Insight, Journal logging) that OpenTelemetry will complement, not replace.
+- **Arrows (Services to JobQueue to layers)**: Work originates at Core Services, is enqueued onto the JobQueue, and dispatched to Processing or Application layers for execution.
+
+---
+
+## 1.1.1 Actors and Actions
+
+### Actors
+
+| Who (Plain English)                       | Technical Term             |
+| ----------------------------------------- | -------------------------- |
+| Network node running XRPL software        | xrpld node                 |
+| External client submitting requests       | RPC Client                 |
+| Network neighbor sharing data             | Peer (PeerImp)             |
+| Request handler for client queries        | RPC Server (ServerHandler) |
+| Command executor for specific RPC methods | RPCHandler                 |
+| Agreement process between nodes           | Consensus (RCLConsensus)   |
+| Transaction processing coordinator        | NetworkOPs                 |
+| Background task scheduler                 | JobQueue                   |
+| Ledger state manager                      | LedgerMaster               |
+| Payment route calculator                  | PathFinding (Pathfinder)   |
+| Transaction waiting room                  | TxQ (Transaction Queue)    |
+| Fee adjustment system                     | LoadManager                |
+| Trusted validator list manager            | ValidatorList              |
+| Protocol upgrade tracker                  | AmendmentTable             |
+| Ledger state hash tree                    | SHAMap                     |
+| Persistent key-value storage              | NodeStore                  |
+
+### Actions
+
+| What Happens (Plain English)                   | Technical Term         |
+| ---------------------------------------------- | ---------------------- |
+| Client sends a request to a node               | `rpc.request`          |
+| Node executes a specific RPC command           | `rpc.command.*`        |
+| Node receives a transaction from a peer        | `tx.receive`           |
+| Node checks if a transaction is valid          | `tx.validate`          |
+| Node forwards a transaction to neighbors       | `tx.relay`             |
+| Nodes agree on which transactions to include   | `consensus.round`      |
+| Consensus progresses through phases            | `consensus.phase.*`    |
+| Node builds a new confirmed ledger             | `ledger.build`         |
+| Node fetches missing ledger data from peers    | `ledger.acquire`       |
+| Node computes payment routes                   | `pathfind.compute`     |
+| Node queues a transaction for later processing | `txq.enqueue`          |
+| Node increases fees due to high load           | `fee.escalate`         |
+| Node fetches the latest trusted validator list | `validator.list.fetch` |
+| Node votes on a protocol amendment             | `amendment.vote`       |
+| Node synchronizes state tree data              | `shamap.sync`          |
+
+---
+
+## 1.2 Key Components for Instrumentation
+
+> **TxQ** = Transaction Queue | **UNL** = Unique Node List
+
+| Component          | Location                                   | Purpose                  | Trace Value                      |
+| ------------------ | ------------------------------------------ | ------------------------ | -------------------------------- |
+| **Overlay**        | `src/xrpld/overlay/`                       | P2P communication        | Message propagation timing       |
+| **PeerImp**        | `src/xrpld/overlay/detail/PeerImp.cpp`     | Individual peer handling | Per-peer latency                 |
+| **RCLConsensus**   | `src/xrpld/app/consensus/RCLConsensus.cpp` | Consensus algorithm      | Round timing, phase analysis     |
+| **NetworkOPs**     | `src/xrpld/app/misc/NetworkOPs.cpp`        | Transaction processing   | Tx lifecycle tracking            |
+| **ServerHandler**  | `src/xrpld/rpc/detail/ServerHandler.cpp`   | RPC entry point          | Request latency                  |
+| **RPCHandler**     | `src/xrpld/rpc/detail/RPCHandler.cpp`      | Command execution        | Per-command timing               |
+| **JobQueue**       | `src/xrpl/core/JobQueue.h`                 | Async task execution     | Queue wait times                 |
+| **PathFinding**    | `src/xrpld/app/paths/`                     | Payment path computation | Path latency, cache hits         |
+| **TxQ**            | `src/xrpld/app/misc/TxQ.cpp`               | Transaction queue/fees   | Queue depth, eviction rates      |
+| **LoadManager**    | `src/xrpld/app/main/LoadManager.cpp`       | Fee escalation/load      | Fee levels, load factors         |
+| **InboundLedgers** | `src/xrpld/app/ledger/InboundLedgers.cpp`  | Ledger acquisition       | Sync time, peer reliability      |
+| **ValidatorList**  | `src/xrpld/app/misc/ValidatorList.cpp`     | UNL management           | List freshness, fetch failures   |
+| **AmendmentTable** | `src/xrpld/app/misc/AmendmentTable.cpp`    | Protocol amendments      | Voting status, activation events |
+| **SHAMap**         | `src/xrpld/shamap/`                        | State hash tree          | Sync speed, missing nodes        |
+
+---
+
+## 1.3 Transaction Flow Diagram
+
+Transaction flow spans multiple nodes in the network. Each node creates linked spans to form a distributed trace:
+
+```mermaid
+sequenceDiagram
+    participant Client
+    participant PeerA as Peer A (Receive)
+    participant PeerB as Peer B (Relay)
+    participant PeerC as Peer C (Validate)
+
+    Client->>PeerA: 1. Submit TX
+
+    rect rgb(230, 245, 255)
+        Note over PeerA: tx.receive SPAN START
+        PeerA->>PeerA: HashRouter Deduplication
+        PeerA->>PeerA: tx.validate (child span)
+    end
+
+    PeerA->>PeerB: 2. Relay TX (with trace ctx)
+
+    rect rgb(230, 245, 255)
+        Note over PeerB: tx.receive (linked span)
+    end
+
+    PeerB->>PeerC: 3. Relay TX
+
+    rect rgb(230, 245, 255)
+        Note over PeerC: tx.receive (linked span)
+        PeerC->>PeerC: tx.process
+    end
+
+    Note over Client,PeerC: DISTRIBUTED TRACE (same trace_id: abc123)
+```
+
+**Reading the diagram:**
+
+- **Client**: The external entity that submits a transaction to Peer A. It has no trace context -- the trace starts at the first node.
+- **Peer A (Receive)**: The entry node that creates the root span `tx.receive`, runs HashRouter deduplication to avoid processing duplicates, and creates a child `tx.validate` span.
+- **Peer A to Peer B arrow**: The relay message carries trace context (trace_id + parent span_id), enabling Peer B to create a linked span under the same trace.
+- **Peer B (Relay)**: Receives the transaction and trace context, creates a `tx.receive` span linked to Peer A's trace, then relays onward.
+- **Peer C (Validate)**: Final hop in this example. Creates a linked `tx.receive` span and runs `tx.process` to fully process the transaction.
+- **Blue rectangles**: Highlight the span boundaries on each node, showing where instrumentation creates and closes spans.
+
+### Trace Structure
+
+```
+trace_id: abc123
+├── span: tx.receive (Peer A)
+│   ├── span: tx.validate
+│   └── span: tx.relay
+├── span: tx.receive (Peer B) [parent: Peer A]
+│   └── span: tx.relay
+└── span: tx.receive (Peer C) [parent: Peer B]
+    └── span: tx.process
+```
+
+---
+
+## 1.4 Consensus Round Flow
+
+Consensus rounds are multi-phase operations that benefit significantly from tracing:
+
+```mermaid
+flowchart TB
+    subgraph round["consensus.round (root span)"]
+        attrs["Attributes:<br/>ledger_seq = 12345678<br/>consensus_mode = proposing<br/>proposers = 35"]
+
+        subgraph open["consensus.phase.open"]
+            open_desc["Duration: ~3s<br/>Waiting for transactions"]
+        end
+
+        subgraph establish["consensus.phase.establish"]
+            est_attrs["proposals_received = 28<br/>disputes_resolved = 3"]
+            est_children["├── consensus.proposal.receive (×28)<br/>├── consensus.proposal.send (×1)<br/>└── consensus.dispute.resolve (×3)"]
+        end
+
+        subgraph accept["consensus.phase.accept"]
+            acc_attrs["transactions_applied = 150<br/>ledger_hash = DEF456..."]
+            acc_children["├── ledger.build<br/>└── ledger.validate"]
+        end
+
+        attrs --> open
+        open --> establish
+        establish --> accept
+    end
+
+    style round fill:#f57f17,stroke:#e65100,color:#ffffff
+    style open fill:#1565c0,stroke:#0d47a1,color:#ffffff
+    style establish fill:#2e7d32,stroke:#1b5e20,color:#ffffff
+    style accept fill:#c2185b,stroke:#880e4f,color:#ffffff
+```
+
+**Reading the diagram:**
+
+- **consensus.round (orange, root span)**: The top-level span encompassing the entire consensus round, with attributes like ledger sequence, mode, and proposer count.
+- **consensus.phase.open (blue)**: The first phase where the node waits (~3s) to collect incoming transactions before proposing.
+- **consensus.phase.establish (green)**: The negotiation phase where validators exchange proposals, resolve disputes, and converge on a transaction set. Child spans track each proposal received/sent and each dispute resolved.
+- **consensus.phase.accept (pink)**: The final phase where the agreed transaction set is applied, a new ledger is built, and the ledger is validated. Child spans cover `ledger.build` and `ledger.validate`.
+- **Arrows (open to establish to accept)**: The sequential flow through the three consensus phases. Each phase must complete before the next begins.
+
+---
+
+## 1.5 RPC Request Flow
+
+> **WS** = WebSocket
+
+RPC requests support W3C Trace Context headers for distributed tracing across services:
+
+```mermaid
+flowchart TB
+    subgraph request["rpc.request (root span)"]
+        http["HTTP Request — POST /<br/>traceparent:<br/>00-abc123...-def456...-01"]
+
+        attrs["Attributes:<br/>http.method = POST<br/>net.peer.ip = 192.168.1.100<br/>command = submit"]
+
+        subgraph enqueue["jobqueue.enqueue"]
+            job_attr["job_type = jtCLIENT_RPC"]
+        end
+
+        subgraph command["rpc.command.submit"]
+            cmd_attrs["version = 2<br/>rpc_role = user"]
+            cmd_children["├── tx.deserialize<br/>├── tx.validate_local<br/>└── tx.submit_to_network"]
+        end
+
+        response["Response: 200 OK<br/>Duration: 45ms"]
+
+        http --> attrs
+        attrs --> enqueue
+        enqueue --> command
+        command --> response
+    end
+
+    style request fill:#2e7d32,stroke:#1b5e20,color:#ffffff
+    style enqueue fill:#1565c0,stroke:#0d47a1,color:#ffffff
+    style command fill:#e65100,stroke:#bf360c,color:#ffffff
+```
+
+**Reading the diagram:**
+
+- **rpc.request (green, root span)**: The outermost span representing the full RPC request lifecycle, from HTTP receipt to response. Carries the W3C `traceparent` header for distributed tracing.
+- **HTTP Request node**: Shows the incoming POST request with its `traceparent` header and extracted attributes (method, peer IP, command name).
+- **jobqueue.enqueue (blue)**: The span covering the asynchronous handoff from the RPC thread to the JobQueue worker thread. The trace context is preserved across this async boundary.
+- **rpc.command.submit (orange)**: The span for the actual command execution, with child spans for deserialization, local validation, and network submission.
+- **Response node**: The final output with HTTP status and total duration, marking the end of the root span.
+- **Arrows (top to bottom)**: The sequential processing pipeline -- receive request, extract attributes, enqueue job, execute command, return response.
+
+---
+
+## 1.6 Key Trace Points
+
+> **TxQ** = Transaction Queue
+
+The following table identifies priority instrumentation points across the codebase:
+
+| Category        | Span Name              | File                   | Method                  | Priority |
+| --------------- | ---------------------- | ---------------------- | ----------------------- | -------- |
+| **Transaction** | `tx.receive`           | `PeerImp.cpp`          | `handleTransaction()`   | High     |
+| **Transaction** | `tx.validate`          | `NetworkOPs.cpp`       | `processTransaction()`  | High     |
+| **Transaction** | `tx.process`           | `NetworkOPs.cpp`       | `doTransactionSync()`   | High     |
+| **Transaction** | `tx.relay`             | `OverlayImpl.cpp`      | `relay()`               | Medium   |
+| **Consensus**   | `consensus.round`      | `RCLConsensus.cpp`     | `startRound()`          | High     |
+| **Consensus**   | `consensus.phase.*`    | `Consensus.h`          | `timerEntry()`          | High     |
+| **Consensus**   | `consensus.proposal.*` | `RCLConsensus.cpp`     | `peerProposal()`        | Medium   |
+| **RPC**         | `rpc.request`          | `ServerHandler.cpp`    | `onRequest()`           | High     |
+| **RPC**         | `rpc.command.*`        | `RPCHandler.cpp`       | `doCommand()`           | High     |
+| **Peer**        | `peer.connect`         | `OverlayImpl.cpp`      | `onHandoff()`           | Low      |
+| **Peer**        | `peer.message.*`       | `PeerImp.cpp`          | `onMessage()`           | Low      |
+| **Ledger**      | `ledger.acquire`       | `InboundLedgers.cpp`   | `acquire()`             | Medium   |
+| **Ledger**      | `ledger.build`         | `RCLConsensus.cpp`     | `buildLCL()`            | High     |
+| **PathFinding** | `pathfind.request`     | `PathRequest.cpp`      | `doUpdate()`            | High     |
+| **PathFinding** | `pathfind.compute`     | `Pathfinder.cpp`       | `findPaths()`           | High     |
+| **TxQ**         | `txq.enqueue`          | `TxQ.cpp`              | `apply()`               | High     |
+| **TxQ**         | `txq.apply`            | `TxQ.cpp`              | `processClosedLedger()` | High     |
+| **Fee**         | `fee.escalate`         | `LoadManager.cpp`      | `raiseLocalFee()`       | Medium   |
+| **Ledger**      | `ledger.replay`        | `LedgerReplayer.h`     | `replay()`              | Medium   |
+| **Ledger**      | `ledger.delta`         | `LedgerDeltaAcquire.h` | `processData()`         | Medium   |
+| **Validator**   | `validator.list.fetch` | `ValidatorList.cpp`    | `verify()`              | Medium   |
+| **Validator**   | `validator.manifest`   | `Manifest.cpp`         | `applyManifest()`       | Low      |
+| **Amendment**   | `amendment.vote`       | `AmendmentTable.cpp`   | `doVoting()`            | Low      |
+| **SHAMap**      | `shamap.sync`          | `SHAMap.cpp`           | `fetchRoot()`           | Medium   |
+
+---
+
+## 1.7 Instrumentation Priority
+
+> **TxQ** = Transaction Queue
+
+```mermaid
+quadrantChart
+    title Instrumentation Priority Matrix
+    x-axis Low Complexity --> High Complexity
+    y-axis Low Value --> High Value
+    quadrant-1 Implement First
+    quadrant-2 Plan Carefully
+    quadrant-3 Quick Wins
+    quadrant-4 Consider Later
+
+    RPC Tracing: [0.2, 0.92]
+    Transaction Tracing: [0.55, 0.88]
+    Consensus Tracing: [0.78, 0.82]
+    PathFinding: [0.38, 0.75]
+    TxQ and Fees: [0.25, 0.65]
+    Ledger Sync: [0.62, 0.58]
+    Peer Message Tracing: [0.35, 0.25]
+    JobQueue Tracing: [0.2, 0.48]
+    Validator Mgmt: [0.48, 0.42]
+    Amendment Tracking: [0.15, 0.32]
+    SHAMap Operations: [0.72, 0.45]
+```
+
+---
+
+## 1.8 Observable Outcomes
+
+> **TxQ** = Transaction Queue | **UNL** = Unique Node List
+
+After implementing OpenTelemetry, operators and developers will gain visibility into the following:
+
+### 1.8.1 What You Will See: Traces
+
+| Trace Type                 | Description                                                                                 | Example Query in Grafana/Tempo                  |
+| -------------------------- | ------------------------------------------------------------------------------------------- | ----------------------------------------------- |
+| **Transaction Lifecycle**  | Full journey from RPC submission through validation, relay, consensus, and ledger inclusion | `{service.name="xrpld" && tx_hash="ABC123..."}` |
+| **Cross-Node Propagation** | Transaction path across multiple xrpld nodes with timing                                    | `{relay_count > 0}`                             |
+| **Consensus Rounds**       | Complete round with all phases (open, establish, accept)                                    | `{span.name=~"consensus.round.*"}`              |
+| **RPC Request Processing** | Individual command execution with timing breakdown                                          | `{command="account_info"}`                      |
+| **Ledger Acquisition**     | Peer-to-peer ledger data requests and responses                                             | `{span.name="ledger.acquire"}`                  |
+| **PathFinding Latency**    | Path computation time and cache effectiveness for payment RPCs                              | `{span.name="pathfind.compute"}`                |
+| **TxQ Behavior**           | Queue depth, eviction patterns, fee escalation during congestion                            | `{span.name=~"txq.*"}`                          |
+| **Ledger Sync**            | Full acquisition timeline including delta and transaction fetches                           | `{span.name=~"ledger.acquire.*"}`               |
+| **Validator Health**       | UNL fetch success, manifest updates, stale list detection                                   | `{span.name=~"validator.*"}`                    |
+
+### 1.8.2 What You Will See: Metrics (Derived from Traces)
+
+| Metric                        | Description                             | Dashboard Panel             |
+| ----------------------------- | --------------------------------------- | --------------------------- |
+| **RPC Latency (p50/p95/p99)** | Response time distribution per command  | Heatmap by command          |
+| **Transaction Throughput**    | Transactions processed per second       | Time series graph           |
+| **Consensus Round Duration**  | Time to complete consensus phases       | Histogram                   |
+| **Cross-Node Latency**        | Time for transaction to reach N nodes   | Line chart with percentiles |
+| **Error Rate**                | Failed transactions/RPC calls by type   | Stacked bar chart           |
+| **PathFinding Latency**       | Path computation time per currency pair | Heatmap by currency         |
+| **TxQ Depth**                 | Queued transactions over time           | Time series with thresholds |
+| **Fee Escalation Level**      | Current fee multiplier                  | Gauge with alert thresholds |
+| **Ledger Sync Duration**      | Time to acquire missing ledgers         | Histogram                   |
+
+### 1.8.3 Concrete Dashboard Examples
+
+**Transaction Trace View (Tempo):**
+
+```
+┌────────────────────────────────────────────────────────────────────────────────┐
+│ Trace: abc123... (Transaction Submission)                    Duration: 847ms   │
+├────────────────────────────────────────────────────────────────────────────────┤
+│ ├── rpc.request [ServerHandler]                              ████░░░░░░  45ms  │
+│ │   └── rpc.command.submit [RPCHandler]                      ████░░░░░░  42ms  │
+│ │       └── tx.receive [NetworkOPs]                          ███░░░░░░░  35ms  │
+│ │           ├── tx.validate [TxQ]                            █░░░░░░░░░   8ms  │
+│ │           └── tx.relay [Overlay]                           ██░░░░░░░░  15ms  │
+│ │               ├── tx.receive [Node-B]                      █████░░░░░  52ms  │
+│ │               │   └── tx.relay [Node-B]                    ██░░░░░░░░  18ms  │
+│ │               └── tx.receive [Node-C]                      ██████░░░░  65ms  │
+│ └── consensus.round [RCLConsensus]                           ████████░░ 720ms  │
+│     ├── consensus.phase.open                                 ██░░░░░░░░ 180ms  │
+│     ├── consensus.phase.establish                            █████░░░░░ 480ms  │
+│     └── consensus.phase.accept                               █░░░░░░░░░  60ms  │
+└────────────────────────────────────────────────────────────────────────────────┘
+```
+
+**RPC Performance Dashboard Panel:**
+
+```
+┌─────────────────────────────────────────────────────────────┐
+│ RPC Command Latency (Last 1 Hour)                           │
+├─────────────────────────────────────────────────────────────┤
+│ Command          │ p50    │ p95    │ p99    │ Errors │ Rate │
+│──────────────────┼────────┼────────┼────────┼────────┼──────│
+│ account_info     │  12ms  │  45ms  │  89ms  │  0.1%  │ 150/s│
+│ submit           │  35ms  │ 120ms  │ 250ms  │  2.3%  │  45/s│
+│ ledger           │   8ms  │  25ms  │  55ms  │  0.0%  │  80/s│
+│ tx               │  15ms  │  50ms  │ 100ms  │  0.5%  │  60/s│
+│ server_info      │   5ms  │  12ms  │  20ms  │  0.0%  │ 200/s│
+└─────────────────────────────────────────────────────────────┘
+```
+
+**Consensus Health Dashboard Panel:**
+
+```mermaid
+---
+config:
+    xyChart:
+        width: 1200
+        height: 400
+        plotReservedSpacePercent: 50
+        chartOrientation: vertical
+    themeVariables:
+        xyChart:
+            plotColorPalette: "#3498db"
+---
+xychart-beta
+    title "Consensus Round Duration (Last 24 Hours)"
+    x-axis "Time of Day (Hours)" [0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24]
+    y-axis "Duration (seconds)" 1 --> 5
+    line [2.1, 2.4, 2.8, 3.2, 3.8, 4.3, 4.5, 5.0, 4.7, 4.0, 3.2, 2.6, 2.0]
+```
+
+### 1.8.4 Operator Actionable Insights
+
+| Scenario                  | What You'll See                                                              | Action                                           |
+| ------------------------- | ---------------------------------------------------------------------------- | ------------------------------------------------ |
+| **Slow RPC**              | Span showing which phase is slow (parsing, execution, serialization)         | Optimize specific code path                      |
+| **Transaction Stuck**     | Trace stops at validation; error attribute shows reason                      | Fix transaction parameters                       |
+| **Consensus Delay**       | Phase.establish taking too long; proposer attribute shows missing validators | Investigate network connectivity                 |
+| **Memory Spike**          | Large batch of spans correlating with memory increase                        | Tune batch_size or sampling                      |
+| **Network Partition**     | Traces missing cross-node links for specific peer                            | Check peer connectivity                          |
+| **Path Computation Slow** | pathfind.compute span shows high latency; cache miss rate in attributes      | Warm the RippleLineCache, check order book depth |
+| **TxQ Full**              | txq.enqueue spans show evictions; fee.escalate spans increasing              | Monitor fee levels, alert operators              |
+| **Ledger Sync Stalled**   | ledger.acquire spans timing out; peer reliability attributes show issues     | Check peer connectivity, add trusted peers       |
+| **UNL Stale**             | validator.list.fetch spans failing; last_update attribute aging              | Verify validator site URLs, check DNS            |
+
+### 1.8.5 Developer Debugging Workflow
+
+1. **Find Transaction**: Query by `tx_hash` to get full trace
+2. **Identify Bottleneck**: Look at span durations to find slowest component
+3. **Check Attributes**: Review `validity`, `rpc_status` for errors
+4. **Correlate Logs**: Use `trace_id` to find related PerfLog entries
+5. **Compare Nodes**: Filter by `service.instance.id` to compare behavior across nodes
+
+---
+
+_Next: [Design Decisions](./02-design-decisions.md)_ | _Back to: [Overview](./OpenTelemetryPlan.md)_
--- a/OpenTelemetryPlan/02-design-decisions.md
+++ b/OpenTelemetryPlan/02-design-decisions.md
@@ -0,0 +1,866 @@
+# Design Decisions
+
+> **Parent Document**: [OpenTelemetryPlan.md](./OpenTelemetryPlan.md)
+> **Related**: [Architecture Analysis](./01-architecture-analysis.md)
+
+---
+
+## 2.1 OpenTelemetry Components
+
+> **OTLP** = OpenTelemetry Protocol
+
+### 2.1.1 SDK Selection
+
+**Primary Choice**: OpenTelemetry C++ SDK (`opentelemetry-cpp`)
+
+| Component                               | Purpose                | Required                  |
+| --------------------------------------- | ---------------------- | ------------------------- |
+| `opentelemetry-cpp::api`                | Tracing API headers    | Yes                       |
+| `opentelemetry-cpp::sdk`                | SDK implementation     | Yes                       |
+| `opentelemetry-cpp::ext`                | Extensions (exporters) | Yes                       |
+| `opentelemetry-cpp::otlp_http_exporter` | OTLP/HTTP export       | Yes (shipped in Phase 1b) |
+| `opentelemetry-cpp::otlp_grpc_exporter` | OTLP/gRPC export       | Future (not yet wired up) |
+
+### 2.1.2 Instrumentation Strategy
+
+**Manual Instrumentation** (recommended):
+
+| Approach   | Pros                                                            | Cons                                                    |
+| ---------- | --------------------------------------------------------------- | ------------------------------------------------------- |
+| **Manual** | Precise control, optimized placement, xrpld-specific attributes | More development effort                                 |
+| **Auto**   | Less code, automatic coverage                                   | Less control, potential overhead, limited customization |
+
+---
+
+## 2.2 Exporter Configuration
+
+> **OTLP** = OpenTelemetry Protocol
+
+```mermaid
+flowchart TB
+    subgraph nodes["xrpld Nodes"]
+        node1["xrpld<br/>Node 1"]
+        node2["xrpld<br/>Node 2"]
+        node3["xrpld<br/>Node 3"]
+    end
+
+    collector["OpenTelemetry<br/>Collector<br/>(sidecar or standalone)"]
+
+    subgraph backends["Observability Backends"]
+        tempo["Tempo"]
+        elastic["Elastic<br/>APM"]
+    end
+
+    node1 -->|"OTLP/HTTP<br/>:4318"| collector
+    node2 -->|"OTLP/HTTP<br/>:4318"| collector
+    node3 -->|"OTLP/HTTP<br/>:4318"| collector
+
+    collector --> tempo
+    collector --> elastic
+
+    style nodes fill:#0d47a1,stroke:#082f6a,color:#ffffff
+    style backends fill:#1b5e20,stroke:#0d3d14,color:#ffffff
+    style collector fill:#bf360c,stroke:#8c2809,color:#ffffff
+```
+
+**Reading the diagram:**
+
+- **xrpld Nodes (blue)**: The source of telemetry data. Each xrpld node exports spans via OTLP/HTTP on port 4318 (the only exporter shipped in Phase 1b).
+- **OpenTelemetry Collector (red)**: The central aggregation point that receives spans from all nodes. Can run as a sidecar (per-node) or standalone (shared). Handles batching, filtering, and routing.
+- **Observability Backends (green)**: The storage and visualization destinations. Tempo is the recommended backend for both development and production, and Elastic APM is an alternative. The Collector routes to one or more backends.
+- **Arrows (nodes to collector to backends)**: The data pipeline -- spans flow from nodes to the Collector over HTTP, then the Collector fans out to the configured backends.
+
+### 2.2.1 OTLP/HTTP (Shipped in Phase 1b)
+
+OTLP/HTTP is the only exporter wired up in Phase 1b. It is configured via
+`OtlpHttpExporterOptions` with the collector traces endpoint
+(`http://localhost:4318/v1/traces` by default) and a JSON content type
+(binary protobuf is also available).
+
+### 2.2.2 OTLP/gRPC (Future Work — Planned Upgrade)
+
+OTLP/gRPC is planned as a future upgrade from the HTTP exporter. The gRPC
+transport offers lower per-span overhead and tighter back-pressure semantics
+than HTTP/JSON, making it attractive for production deployments once the HTTP
+path is validated in earlier phases.
+
+Required to land this upgrade:
+
+1. Add `opentelemetry-cpp::otlp_grpc_exporter` to the Conan recipe (the
+   dependency already exists but is not linked in Phase 1b builds).
+2. Extend `TelemetryConfig.cpp` to parse an `exporter` key (`otlp_http`
+   default, `otlp_grpc` opt-in) and a gRPC endpoint override.
+3. In `Telemetry::start()` branch on the parsed exporter type and construct
+   either `OtlpHttpExporterFactory::Create(httpOpts)` or
+   `OtlpGrpcExporterFactory::Create(grpcOpts)` accordingly.
+4. Update the runbook and dashboards to document the alternate port and TLS
+   settings.
+
+When wired up, the gRPC path will use `OtlpGrpcExporterOptions` configured with
+the collector endpoint (host on port 4317), TLS credentials enabled, and a CA
+certificate path.
+
+Until that work lands, `OtlpGrpcExporterOptions` is **not** used by any code
+path in Phase 1b through Phase 5.
+
+---
+
+## 2.3 Span Naming Conventions
+
+> **TxQ** = Transaction Queue | **UNL** = Unique Node List | **WS** = WebSocket
+
+### 2.3.1 Naming Schema
+
+```
+<component>.<operation>[.<sub-operation>]
+```
+
+**Examples**:
+
+- `tx.receive` - Transaction received from peer
+- `consensus.phase.establish` - Consensus establish phase
+- `rpc.command.server_info` - server_info RPC command
+
+### 2.3.2 Complete Span Catalog
+
+> **Status column.** This catalog is the design inventory; it is not a
+> statement of what currently emits. `Live` means the span is present in the
+> implemented inventory ([09-data-collection-reference.md §1.1](./09-data-collection-reference.md#11-complete-span-inventory-41-spans)),
+> which is the authoritative list. `Renamed`/`Split` means the concept shipped
+> under a different name than planned here. **Not built** means no span is
+> emitted for it today.
+>
+> **"Not built" is not one thing.** All 14 such entries fall into three cases, and the
+> fourth column says which — filing them all as oversights would be wrong:
+>
+> - **Superseded by metrics or logs (7)** — a deliberate trade-off: the signal is already
+>   carried by a metric or by a log-derived panel, and a span would add per-event volume
+>   without adding information. `tx.relay`, `fee.escalate`, `validator.list.fetch`,
+>   `validator.manifest`, `shamap.sync`, `job.enqueue`, `job.execute`.
+> - **Gap (6)** — nothing was decided; they were simply never instrumented. The four
+>   `peer.*` entries, plus `ledger.replay` and `ledger.delta` — and those last two are the
+>   sharpest, because they have **no metric substitute at all**.
+> - **Deferred (1)** — scheduled work: `amendment.vote` (Phase 11).
+>
+> The four `peer.*` entries are the peer-span coverage gap: only
+> `peer.proposal.receive` and `peer.validation.receive` exist, so protocol
+> message send/receive and connection lifecycle are untraced. See
+> [09 §6.4](./09-data-collection-reference.md#64-peer-span-coverage-gap-not-implemented).
+>
+> `tx.validate` did ship, but renamed and split three ways: the apply pipeline
+> traces `tx.preflight` (stateless checks), `tx.preclaim` (ledger-state checks)
+> and `tx.transactor` (application), each stamped with a `stage` attribute.
+> Names come from `TxApplySpanNames.h:90,94,99`. The spans are created in two
+> different files, not one: `tx.preflight` and `tx.preclaim` come from
+> `applySteps.cpp` (`invokePreflight()` at `:211-212`, `invokePreclaim()` at
+> `:258-261`, both via the shared `makeStageSpan()` helper at `:89-126`), while
+> `tx.transactor` is created in `Transactor::operator()()`
+> (`Transactor.cpp:1601-1605`). Query them with
+> `name=~"tx\.(preflight|preclaim|transactor)"` — a **single** backslash; RE2
+> reads `\\.` as a literal backslash followed by any character, which matches
+> nothing here — never `name="tx.validate"`.
+
+| Span name                      | Description                             | Status                                                           | Why not built / where the signal lives instead                                                                                                                                                                                                                                                             |
+| ------------------------------ | --------------------------------------- | ---------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `tx.receive`                   | Transaction received from network       | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `tx.validate`                  | Transaction signature/format validation | Renamed + split → `tx.preflight`, `tx.preclaim`, `tx.transactor` | —                                                                                                                                                                                                                                                                                                          |
+| `tx.process`                   | Full transaction processing             | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `tx.relay`                     | Transaction relay to peers              | **Not built**                                                    | **Superseded by metrics.** Relay volume is carried by the overlay traffic counters (`total_bytes_in/out`, `total_messages_in/out`, per-`TrafficCount` category). Relay is also per-peer fan-out, so one span per relay multiplies by peer count for data the counters already aggregate.                   |
+| `tx.apply`                     | Apply transaction to ledger             | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `consensus.round`              | Complete consensus round                | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `consensus.phase.open`         | Open phase - collecting transactions    | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `consensus.phase.establish`    | Establish phase - reaching agreement    | Renamed `consensus.establish`                                    | —                                                                                                                                                                                                                                                                                                          |
+| `consensus.phase.accept`       | Accept phase - applying consensus       | Renamed `consensus.accept`                                       | —                                                                                                                                                                                                                                                                                                          |
+| `consensus.proposal.receive`   | Receive peer proposal                   | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `consensus.proposal.send`      | Send our proposal                       | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `consensus.validation.receive` | Receive peer validation                 | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `consensus.validation.send`    | Send our validation                     | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `rpc.request`                  | HTTP/WebSocket request handling         | Split into `rpc.http_request` / `rpc.ws_message`                 | —                                                                                                                                                                                                                                                                                                          |
+| `rpc.command.*`                | Specific RPC command (dynamic)          | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `peer.connect`                 | Peer connection establishment           | **Not built**                                                    | **Gap, scoped as its own change** — see [09 §6.4](./09-data-collection-reference.md#64-peer-span-coverage-gap-not-implemented). Adding these changes the 41-family span count and the 40 catalogued in `expected_spans.json`.                                                                              |
+| `peer.disconnect`              | Peer disconnection                      | **Not built**                                                    | **Gap.** Partially observable: the aggregate count via the `Overlay.Peer_Disconnects` insight gauge and resource-charge drops via `server_info{metric="peer_disconnects_resources"}`, but not per-reason. Disconnect reasons are only recoverable from `debug.log` (the `log-derived-insights` dashboard). |
+| `peer.message.send`            | Send protocol message                   | **Not built**                                                    | **Gap.** Of the 13 protocol message families only `mtGET_OBJECTS` has native instrumentation (`getobject_*`); byte/message volume is aggregated by `TrafficCount` category, not traced per message.                                                                                                        |
+| `peer.message.receive`         | Receive protocol message                | **Not built**                                                    | **Gap.** Same as `peer.message.send`.                                                                                                                                                                                                                                                                      |
+| `ledger.acquire`               | Ledger acquisition from network         | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `ledger.build`                 | Build new ledger                        | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `ledger.validate`              | Ledger validation                       | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `ledger.close`                 | Close ledger                            | Renamed `consensus.ledger_close`                                 | —                                                                                                                                                                                                                                                                                                          |
+| `ledger.replay`                | Ledger replay executed                  | **Not built**                                                    | **Gap, no substitute.** `LedgerReplayer.cpp` and `LedgerReplayTask.cpp` contain zero `SpanGuard` uses and no metric covers the replay path. A real hole, not a trade-off.                                                                                                                                  |
+| `ledger.delta`                 | Delta-based ledger acquired             | **Not built**                                                    | **Gap, no substitute.** `LedgerDeltaAcquire.cpp` contains zero `SpanGuard` uses. The `acquire_*` stats cover whole-ledger acquisition, not the delta path.                                                                                                                                                 |
+| `pathfind.request`             | Path request initiated                  | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `pathfind.compute`             | Path computation executed               | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `txq.enqueue`                  | Transaction queued                      | Live                                                             | —                                                                                                                                                                                                                                                                                                          |
+| `txq.apply`                    | Queued transaction applied              | Renamed `txq.apply_direct` / `txq.accept_tx`                     | —                                                                                                                                                                                                                                                                                                          |
+| `fee.escalate`                 | Fee escalation triggered                | **Not built**                                                    | **Superseded by metrics + existing spans.** Escalation state is `txq_metrics{metric=…}` and `load_factor_metrics{metric=…}`; the queueing path that triggers it is already traced by the six `txq.*` spans. An event span would restate a gauge.                                                           |
+| `validator.list.fetch`         | UNL list fetched                        | **Not built**                                                    | **Superseded by metrics.** `validator_health{metric="unl_expiry_days"}`, `{metric="unl_blocked"}` and `{metric="validation_quorum"}` carry the outcome. A fetch span would fire on a slow timer and tell an operator nothing the gauges do not.                                                            |
+| `validator.manifest`           | Manifest update processed               | **Not built**                                                    | **Superseded by logs.** Per-master-key manifest dispositions are on the `log-derived-insights` dashboard (`ManifestCache` partition, requires `log_level ManifestCache debug`).                                                                                                                            |
+| `amendment.vote`               | Amendment voting executed               | **Not built**                                                    | **Deferred to Phase 11.** `validator_health{metric="amendment_blocked"}` covers the blocked state in the meantime.                                                                                                                                                                                         |
+| `shamap.sync`                  | State tree synchronization              | **Not built**                                                    | **Superseded by metrics.** Covered by the nine `acquire_*` stats, `nodestore_state{metric=…}` and the five `getobject_*` families. Per-node-fetch spans would be prohibitive volume.                                                                                                                       |
+| `job.enqueue`                  | Job added to queue                      | **Not built**                                                    | **Superseded by metrics.** `job_queued_total` and `job_queued_us{job_type}` plus the 105 per-job-type `jobq_*` gauges. A span per enqueue is one span per unit of daemon work, for latency the histogram already records exactly.                                                                          |
+| `job.execute`                  | Job execution                           | **Not built**                                                    | **Superseded by metrics.** `job_started_total`, `job_finished_total`, `job_running_us{job_type}`. Same volume argument as `job.enqueue`.                                                                                                                                                                   |
+
+### 2.3.3 Attribute Naming Conventions
+
+Span **names** follow §2.3.1 (dotted `<component>.<operation>`). Span
+**attribute keys** follow the rules below. The constants in the `*SpanNames.h`
+headers are the single source of truth; the collector, Tempo, the Grafana
+dashboards, and the runbook all consume these exact keys, so every layer must
+agree with the code. A CI check enforces this end to end.
+
+1. **Per-span unique attribute** → bare field name, allowed when the field is
+   recorded by a single span/workflow so the span name already supplies the
+   domain (e.g. `command`, `version`, `local` on `rpc.command`).
+2. **Shared attribute (same concept on more than one span)** → ONE key, reused
+   verbatim on every span that records it; the span name tells the occurrences
+   apart, so no per-emitter prefix is added. Name it by the field's meaning: a
+   property of a domain object keeps that object's bare field name (`ledger_hash`,
+   `ledger_seq`, `tx_hash`, `peer_id`, `full_validation`); a field already
+   qualified by a sub-kind keeps that qualifier on every emitter (`proposal_trusted`
+   on both `consensus.proposal.receive` and `peer.proposal.receive`;
+   `validation_trusted` likewise). Defined once in the base `SpanNames.h`
+   `namespace attr` block and re-exported (`using`) by each domain header.
+3. **Collision qualifier** → `<domain>_<field>`, only when a bare name would
+   collide with a DIFFERENT concept in the shared spanmetrics label space or with
+   the OTel-reserved `status` key (e.g. `rpc_status`, `grpc_status`,
+   `consensus_phase`, `consensus_round`, `consensus_mode`). This disambiguates
+   distinct concepts that share a word; it is NOT used to tag the same concept
+   with its emitting workflow — that is rule 2 (one shared name).
+4. **Resource attribute** → dotted `xrpl.<subsystem>.<field>`, reserved ONLY
+   for process/network identity set once at startup (`xrpl.network.id`,
+   `xrpl.network.type`). Span attributes are never dotted in the `xrpl.` form —
+   it blurs the resource/span scope boundary and parses awkwardly in TraceQL.
+5. **Span names** use `<subsystem>[.<component>]` (dotted, per §2.3.1). Only
+   attribute _keys_ follow rules 1–4.
+
+Standard OpenTelemetry semantic-convention keys keep their canonical dotted
+form (e.g. `service.*` resource attributes, `http.*` span attributes); the
+"no dotted form" rule applies to xrpl-custom keys only.
+
+The same rules are recorded in `CONTRIBUTING.md` (the permanent home, since
+`OpenTelemetryPlan/` is removed once the rollout completes). The attribute
+examples in §2.4 below follow these rules.
+
+---
+
+## 2.4 Attribute Schema
+
+> **TxQ** = Transaction Queue | **UNL** = Unique Node List | **OTLP** = OpenTelemetry Protocol
+
+### 2.4.1 Resource Attributes (Set Once at Startup)
+
+Resource attributes identify the process and are set once at startup. They use
+the standard OpenTelemetry semantic conventions plus custom dotted `xrpl.*`
+keys (the dotted form is reserved for resource scope per §2.3.3).
+
+Five are set, by `Telemetry.cpp:380-387` (tracer resource) and the matching
+block in `initMetrics()` (metrics resource); the custom key constants are
+`SpanNames.h:117-118`.
+
+| Key                   | Type / value                                                   | Description                    | Status                                                                                                                                                                                                                                                                                          |
+| --------------------- | -------------------------------------------------------------- | ------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `service.name`        | `"xrpld"`                                                      | Standard `SERVICE_NAME`        | Set                                                                                                                                                                                                                                                                                             |
+| `service.version`     | `build_info::getVersionString()`                               | Standard `SERVICE_VERSION`     | Set                                                                                                                                                                                                                                                                                             |
+| `service.instance.id` | node public key (base58), or `[telemetry] service_instance_id` | Standard `SERVICE_INSTANCE_ID` | Set — but the node-key fallback reaches traces only; see [05 §5.1.1](./05-configuration-reference.md)                                                                                                                                                                                           |
+| `xrpl.network.id`     | network id (e.g. 0 for mainnet)                                | Network identifier             | Set                                                                                                                                                                                                                                                                                             |
+| `xrpl.network.type`   | `"mainnet"` \| `"testnet"` \| `"devnet"` \| `"unknown"`        | Network kind                   | Set                                                                                                                                                                                                                                                                                             |
+| `xrpl.node.type`      | `"validator"` \| `"stock"` \| `"reporting"`                    | Node role                      | **Not implemented** — no constant, no set-site. Node role is therefore not queryable from a trace. (Dashboards do offer an `$xrpl_node_role` filter, but it matches a Prometheus label stamped by the external perf-iac deployment — `check_otel_naming.py:872` — not by anything in this repo) |
+| `xrpl.node.cluster`   | cluster name                                                   | Cluster name, if clustered     | **Not implemented** — no constant, no set-site                                                                                                                                                                                                                                                  |
+
+The collector adds two more resource attributes of its own (`deployment.environment`
+and, when the node did not stamp it, `xrpl.network.type`) via the
+`resource/tier` processor, and deletes the SDK-injected `telemetry.sdk.*` trio
+via `resource/stripsdk`. See [05 §5.5.1](./05-configuration-reference.md).
+
+### 2.4.2 Span Attributes by Category
+
+> Span attribute keys use the underscore form from §2.3.3 (shared/qualified
+> keys are `<domain>_<field>`; per-span unique keys are bare). The dotted form
+> is reserved for the resource attributes in §2.4.1 above. This catalog lists
+> the planned attribute set by category; the exact emitted key **and its type**
+> for each implemented span is defined by the `*SpanNames.h` constants and their
+> set-sites, which win where the two differ. The types in the tables below are
+> the ones originally planned and are **not** all what shipped — `peer_id` is
+> the notable case (planned as a base58 string, shipped as an int64). §2.4.3
+> is the implemented view.
+
+#### Transaction Attributes
+
+| Key            | Type   | Description                           |
+| -------------- | ------ | ------------------------------------- |
+| `tx_hash`      | string | Transaction hash (hex)                |
+| `tx_type`      | string | `"Payment"`, `"OfferCreate"`, etc.    |
+| `tx_account`   | string | Source account (redacted in prod)     |
+| `tx_sequence`  | int64  | Account sequence number               |
+| `tx_fee`       | int64  | Fee in drops                          |
+| `tx_result`    | string | `"tesSUCCESS"`, `"tecPATH_DRY"`, etc. |
+| `ledger_index` | int64  | Ledger containing transaction         |
+| `relay_count`  | int64  | Peers the transaction was relayed to  |
+| `suppressed`   | bool   | `true` when HashRouter dropped a dup  |
+
+#### Consensus Attributes
+
+| Key                  | Type    | Description                         |
+| -------------------- | ------- | ----------------------------------- |
+| `consensus_round`    | int64   | Round number                        |
+| `consensus_phase`    | string  | `"open"`, `"establish"`, `"accept"` |
+| `consensus_mode`     | string  | `"proposing"`, `"observing"`, etc.  |
+| `proposers`          | int64   | Number of proposers                 |
+| `prev_ledger_prefix` | string  | Previous ledger hash prefix         |
+| `ledger_seq`         | int64   | Ledger sequence                     |
+| `tx_count`           | int64   | Transactions in consensus set       |
+| `round_time_ms`      | float64 | Round duration                      |
+
+Establish-phase gap fill and cross-node correlation attributes (Phase 4a):
+
+| Key                   | Type   | Description                                               |
+| --------------------- | ------ | --------------------------------------------------------- |
+| `consensus_round_id`  | int64  | Consensus round number                                    |
+| `consensus_ledger_id` | string | `previousLedger.id()` — shared across nodes               |
+| `trace_strategy`      | string | `"deterministic"` or `"attribute"`                        |
+| `converge_percent`    | int64  | Convergence % (0-100+)                                    |
+| `establish_count`     | int64  | Number of establish iterations                            |
+| `disputes_count`      | int64  | Active disputed transactions                              |
+| `agree_count`         | int64  | Peers that agree (haveConsensus)                          |
+| `disagree_count`      | int64  | Peers that disagree                                       |
+| `threshold_percent`   | int64  | Close-time consensus threshold (`avCT_CONSENSUS_PCT`=75%) |
+| `consensus_result`    | string | `"yes"`, `"no"`, `"moved_on"`, `"expired"`                |
+| `mode_old`            | string | Previous consensus mode                                   |
+| `mode_new`            | string | New consensus mode                                        |
+
+#### RPC Attributes
+
+| Key           | Type    | Description                                                                   |
+| ------------- | ------- | ----------------------------------------------------------------------------- |
+| `command`     | string  | Command name (per-span unique on `rpc.command`)                               |
+| `version`     | int64   | API version                                                                   |
+| `rpc_role`    | string  | `"admin"` or `"user"` (qualified — `role` is generic)                         |
+| `params`      | string  | Sanitized parameters (optional)                                               |
+| `rpc_status`  | string  | Response status: `success` \| `error` (qualified — `status` is OTel-reserved) |
+| `duration_ms` | float64 | Request duration in milliseconds                                              |
+
+#### Peer & Message Attributes
+
+| Key                  | Type    | Description                                                               |
+| -------------------- | ------- | ------------------------------------------------------------------------- |
+| `peer_id`            | string  | Peer public key (base58) — **planned only; shipped as int64, see §2.4.3** |
+| `peer_address`       | string  | IP:port                                                                   |
+| `peer_latency_ms`    | float64 | Measured latency                                                          |
+| `peer_cluster`       | string  | Cluster name if clustered                                                 |
+| `message_type`       | string  | Protocol message type name                                                |
+| `message_size_bytes` | int64   | Message size                                                              |
+| `message_compressed` | bool    | Whether compressed                                                        |
+
+#### Ledger & Job Attributes
+
+| Key               | Type    | Description           |
+| ----------------- | ------- | --------------------- |
+| `ledger_hash`     | string  | Ledger hash           |
+| `ledger_index`    | int64   | Ledger sequence/index |
+| `close_time`      | int64   | Close time (epoch)    |
+| `ledger_tx_count` | int64   | Transaction count     |
+| `job_type`        | string  | Job type name         |
+| `job_queue_ms`    | float64 | Time spent in queue   |
+| `job_worker`      | int64   | Worker thread ID      |
+
+#### PathFinding Attributes
+
+| Key                        | Type   | Description               |
+| -------------------------- | ------ | ------------------------- |
+| `pathfind_source_currency` | string | Source currency code      |
+| `pathfind_dest_currency`   | string | Destination currency code |
+| `pathfind_path_count`      | int64  | Number of paths found     |
+| `pathfind_cache_hit`       | bool   | RippleLineCache hit       |
+
+#### TxQ Attributes
+
+| Key                   | Type   | Description                 |
+| --------------------- | ------ | --------------------------- |
+| `txq_queue_depth`     | int64  | Current queue depth         |
+| `txq_fee_level`       | int64  | Fee level of transaction    |
+| `txq_eviction_reason` | string | Why transaction was evicted |
+
+#### Fee Attributes
+
+| Key                    | Type  | Description               |
+| ---------------------- | ----- | ------------------------- |
+| `fee_load_factor`      | int64 | Current load factor       |
+| `fee_escalation_level` | int64 | Fee escalation multiplier |
+
+#### Validator Attributes
+
+| Key                      | Type  | Description               |
+| ------------------------ | ----- | ------------------------- |
+| `validator_list_size`    | int64 | UNL size                  |
+| `validator_list_age_sec` | int64 | Seconds since last update |
+
+#### Amendment Attributes
+
+| Key                | Type   | Description                            |
+| ------------------ | ------ | -------------------------------------- |
+| `amendment_name`   | string | Amendment name                         |
+| `amendment_status` | string | `"enabled"`, `"vetoed"`, `"supported"` |
+
+#### SHAMap Attributes
+
+| Key                    | Type    | Description                                   |
+| ---------------------- | ------- | --------------------------------------------- |
+| `shamap_type`          | string  | `"transaction"`, `"state"`, `"account_state"` |
+| `shamap_missing_nodes` | int64   | Number of missing nodes during sync           |
+| `shamap_duration_ms`   | float64 | Sync duration                                 |
+
+### 2.4.3 Data Collection Summary
+
+§2.4.2 above is the _planned_ catalogue; this table is the **implemented** one.
+Its left column lists the keys of the `attr` namespaces of the `*SpanNames.h`
+headers; every key shown has at least one live `attr::` set-site in
+non-test code. The right column lists keys this document once claimed were
+collected but which have no constant and no set-site at all.
+
+**This table is a category-level roll-up, not the authority.** The
+authoritative per-span breakdown — which span carries which attribute — is
+[09-data-collection-reference.md §1.2](./09-data-collection-reference.md#12-complete-attribute-inventory-bareunderscore-keys),
+and the exact key _spelling_ is owned by the `*SpanNames.h` constants. Where
+this table disagrees with either, they win.
+
+> **Known divergence (documented, not resolved here).** 09 §1.2's Consensus
+> subsection lists 47 keys; `include/xrpl/consensus/ConsensusSpanNames.h`
+> defines 54 in its `attr` namespace (48 own `makeStr` constants plus 6
+> `using` re-exports of the shared keys in `SpanNames.h`), all 54 with
+> set-sites. Five of the difference — `open_duration_ms`,
+> `peer_positions_at_close`, `position_hash_prefix`, `prev_ledger_prefix`,
+> `disputes_resolved_count` — are emitted but absent from 09 §1.2's consensus
+> table; the other two, `proposal_trusted` and `validation_trusted`, are
+> documented in 09 §1.2's Peer subsection instead (they are shared keys set on
+> both the `peer.*` and the `consensus.*` receive spans — `PeerImp.cpp:1953`
+> and `:2027` for the proposal pair, `:2591` and `:2635` for the validation
+> pair). Fixing 09 is tracked separately; the Consensus row below lists all 54.
+
+| Category        | Attributes emitted (from `*SpanNames.h`)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Named here but NOT emitted                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | Purpose                      |
+| --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------- |
+| **Transaction** | `tx_hash`, `tx_type`, `ter_result`, `fee`, `sequence`, `current_ledger_seq`, `current_ledger_hash`, `local`, `path`, `suppressed`, `tx_status`, `peer_version`, `peer_id`, `stage`, `applied`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | `tx_result` (renamed → `ter_result`), `tx_fee` (→ `fee`), `ledger_index` (→ `current_ledger_seq`), `relay_count`. **`ledger_seq` is not a `tx.*` key**: no `tx.*` span sets it — the receive and apply-stage spans stamp `current_ledger_seq` (`NetworkOPs.cpp:1422`, `PeerImp.cpp:1337`, `Transactor.cpp:1613`, `applySteps.cpp:115`) and, where a view exists, `current_ledger_hash` (`Transactor.cpp:1615`, `applySteps.cpp:121`)                                                                                                                                                                                      | Trace transaction lifecycle  |
+| **Consensus**   | All 54 keys in `ConsensusSpanNames.h`'s `attr` namespace (48 own constants + 6 `using` re-exports), each with a set-site: `consensus_ledger_id`, `consensus_round`, `consensus_round_id`, `consensus_phase`, `consensus_mode`, `consensus_state`, `consensus_result`, `consensus_stalled`, `proposers`, `proposers_finished`, `previous_proposers`, `previous_ledger_seq`, `previous_round_time_ms`, `round_time_ms`, `open_duration_ms`, `quorum`, `proposing`, `is_bow_out`, `trace_strategy`, `converge_percent`, `establish_count`, `tx_count`, `tx_count_open`, `tx_id`, `disputes_count`, `disputes_resolved_count`, `dispute_our_vote`, `dispute_yays`, `dispute_nays`, `agree_count`, `disagree_count`, `threshold_percent`, `avalanche_threshold`, `close_time_threshold`, `have_close_time_consensus`, `close_time_resolution_ms`, `close_time_self`, `close_time_vote_bins`, `resolution_direction`, `parent_close_time`, `peer_positions_at_close`, `prev_ledger_prefix`, `position_hash_prefix`, `mode_old`, `mode_new`, `validation_sign_time`, `proposal_trusted`, `validation_trusted`; re-exported shared keys `ledger_seq`, `ledger_hash`, `full_validation`, `close_time`, `close_time_correct`, `close_resolution_ms` | —                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | Analyze consensus timing     |
+| **RPC**         | `command`, `version`, `rpc_role`, `rpc_status`, `request_payload_size`, `is_batch`, `batch_size`, `load_type`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | `duration_ms` (span duration is a TraceQL intrinsic — query `duration`), `params`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | Monitor RPC performance      |
+| **Peer**        | `peer_id` (**int64**, the process-local `Peer::id_` slot number — not a key of any kind; also set on `tx.receive`), `proposal_trusted`, `validation_trusted`, `ledger_hash`, `full_validation`. (`peer_version` is **not** a peer-span key: the constant lives in `TxSpanNames.h:79` and its only set-site is `PeerImp.cpp:1342` on the `tx.receive` span — see the Transaction row)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | `peer_address`, `peer_latency_ms`, `peer_cluster`, `message_type`, `message_size_bytes`, `message_compressed` — the peer-span coverage gap (§2.3.2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | Network topology analysis    |
+| **Ledger**      | `ledger_seq`, `tx_count`, `tx_failed`, `validations`, `acquire_reason`, `timeouts`, `peer_count`, `outcome`, `close_time`, `close_time_correct`, `close_resolution_ms`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | `ledger_index` (→ `ledger_seq`), `ledger_tx_count` (→ `tx_count`). `ledger_hash` is a live key, but **no `ledger.*` span sets it** — only `consensus.validation.send` (`RCLConsensus.cpp:977`; that span is the one returned by `createValidationSpan()`, which names `cs::validationSend` at `RCLConsensus.cpp:1365,1373`) and `peer.validation.receive` (`PeerImp.cpp:2573`) do. The `LedgerSpanNames.h:41` `using` alias has zero uses. `consensus.ledger_close` sets **no** hash: its four attributes are `ledger_seq`, `consensus_mode`, `tx_count_open` and `close_time_resolution_ms` (`RCLConsensus.cpp:354-361`) | Ledger progression tracking  |
+| **gRPC**        | `method`, `grpc_role`, `grpc_status`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | —                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | gRPC surface monitoring      |
+| **Job**         | — (no job spans exist)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | `job_type`, `job_queue_ms`, `job_worker`. JobQueue is observed via **metrics**, not spans — but by **two disjoint families**, and only one of them has a `job_type` label. See the note below the table                                                                                                                                                                                                                                                                                                                                                                                                                   | JobQueue performance         |
+| **PathFinding** | `pathfind_fast`, `pathfind_search_level`, `pathfind_num_paths`, `pathfind_ledger_index`, `pathfind_num_requests`, `pathfind_num_source_assets`, `pathfind_dest_currency`, `pathfind_source_account` (hashed), `pathfind_dest_account` (hashed)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | `pathfind_source_currency`, `pathfind_path_count`, `pathfind_cache_hit`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Payment path analysis        |
+| **TxQ**         | `txq_status`, `fee_level_paid`, `required_fee_level`, `queue_size`, `ledger_changed`, `expired_count`, `ter_code`, `retries_remaining`, `num_cleared`, `tx_type`, plus the re-exported shared keys `tx_hash`, `ledger_seq`, `current_ledger_seq`, `current_ledger_hash`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | `txq_queue_depth` (→ `queue_size`), `txq_fee_level` (→ `fee_level_paid`), `txq_eviction_reason`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Queue depth and fee tracking |
+| **Fee**         | — (no `fee.escalate` span, §2.3.2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | `fee_load_factor`, `fee_escalation_level`. Fee escalation is dashboarded from metrics (`fee-market`), not spans                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Fee escalation monitoring    |
+| **Validator**   | — (no `validator.*` span, §2.3.2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | `validator_list_size`, `validator_list_age_sec`. UNL health is dashboarded from metrics (`validator-health`)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | UNL health monitoring        |
+| **Amendment**   | — (no `amendment.vote` span, §2.3.2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | `amendment_name`, `amendment_status`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | Protocol upgrade tracking    |
+| **SHAMap**      | — (no `shamap.sync` span, §2.3.2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | `shamap_type`, `shamap_missing_nodes`, `shamap_duration_ms`                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | State tree sync performance  |
+
+The right-hand column is the honest gap list: every key in it appears in the
+§2.4.2 design catalogue but has **zero set-sites** in the code. Where a rename
+happened the live name is given in parentheses; where the concept shipped as a
+metric rather than a span that is stated. Do not build a dashboard panel, an
+alert rule, or a TraceQL query against anything in that column — the query will
+return empty, and (per the PromQL/TraceQL asymmetry) a `=~".*"` matcher on an
+absent attribute silently blanks a TraceQL panel while quietly passing in
+PromQL.
+
+> **JobQueue metrics: two families, one label.** The Job row above has no span
+> attributes, and the metrics that replace them do **not** all carry a
+> `job_type` label. Getting this wrong produces a panel that renders but is
+> wrong, so treat the two families as separate query surfaces:
+>
+> | Family                                                                                                                   | Where the job type lives                                                | Source                                                                                      |
+> | ------------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------- | ------------------------------------------------------------------------------------------- |
+> | Native `XRPL_METRIC_*`: `job_queued_total`, `job_started_total`, `job_finished_total`, `job_queued_us`, `job_running_us` | In a **`job_type` label**                                               | `MetricsRegistry.cpp:360-362` (counters), `:94-95` (histogram names), `:101` (label key)    |
+> | `beast::insight` `jobq` group: `jobq_<jobtype>_waiting` / `_running` / `_deferred` / `_q`                                | In the **metric name itself** — there is **no** `job_type` label at all | `JobTypeData.h:29-32` (naming contract), `:35-38` (suffixes), `Application.cpp:392` (group) |
+>
+> **The trap:** `sum by (job_type)(jobq_…)` collapses every job type into a
+> single series with an empty `job_type`, because an absent PromQL label is
+> equivalent to `""` — the query returns a plausible-looking number rather than
+> an error. Aggregate the `jobq_*` family with a name matcher
+> (`{__name__=~"jobq_.*_waiting"}`) and reserve `by (job_type)` for the
+> `job_*_total` / `job_*_us` family.
+
+### 2.4.4 Privacy & Sensitive Data Policy
+
+> **PII** = Personally Identifiable Information
+
+OpenTelemetry instrumentation is designed to collect **operational metadata only**, never sensitive content.
+
+#### Data NOT Collected
+
+The following data is explicitly **excluded** from telemetry collection:
+
+| Excluded Data           | Reason                                                                                                                                                                                                                                                |
+| ----------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| **Private Keys**        | Never exposed; not relevant to tracing                                                                                                                                                                                                                |
+| **Account Balances**    | Financial data; privacy sensitive                                                                                                                                                                                                                     |
+| **Transaction Amounts** | Financial data; privacy sensitive                                                                                                                                                                                                                     |
+| **Raw TX Payloads**     | May contain sensitive memo/data fields                                                                                                                                                                                                                |
+| **Personal Data**       | No PII collected                                                                                                                                                                                                                                      |
+| **IP Addresses**        | **Never in spans** — no span sets an address attribute (`peer_address` has zero set-sites); peer spans identify peers by `peer_id`, an int64 process-local slot number. **But the log pipeline is a different story** — see the note below this table |
+
+> **Peer IPs DO leave the node — via the log pipeline, not via spans.** The
+> "IP Addresses" row above is scoped to spans, and only to spans. This same
+> document describes a log pipeline (§2.6.5) that carries peer addresses:
+>
+> 1. `PeerImp`'s constructor logs the peer's `remoteAddress_` — an `IP:port` —
+>    at `info` severity (`PeerImp.h:837-842`), and other overlay call sites log
+>    addresses too. These land in the ordinary `debug.log` stream.
+> 2. The collector's `filelog` receiver tails exactly that file
+>    (`otel-collector-config.yaml:38-47`, `include: [/var/log/xrpld/*/debug.log]`)
+>    and the `logs` pipeline exports it to Loki (`:236-239`).
+>
+> So a deployment running the shipped stack **does** ship peer IPs off-box, as
+> log bodies. There is no attribute to drop and no span-level switch to flip,
+> because the IPs are inside free-text log messages rather than in structured
+> fields — a `delete` action on an attribute key would not touch them.
+>
+> **The control points are therefore log-side, not trace-side:** Loki
+> retention and access control on the log store; the `filelog` receiver's
+> `include` list (dropping it disables log↔trace correlation entirely); or a
+> collector-side transform on the log body. Do not describe the telemetry
+> pipeline as IP-free without qualifying it to traces.
+
+#### Privacy Protection Mechanisms
+
+| Mechanism                     | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
+| ----------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| **Account Hashing**           | Account addresses are hashed both SDK-side (`pathfind_source_account`, `pathfind_dest_account` — always hashed before emission) and again at the collector level, so raw addresses never reach storage                                                                                                                                                                                                                                                                                                                                                                                                                           |
+| **Unconditional Redaction**   | Account redaction is **not** configurable and cannot be turned off: `redactAccount()` (`Redaction.cpp:14-29`) hashes every **non-empty** address handed to it, with no flag and no bypass (an empty input returns empty — `Redaction.cpp:18-19` — so there is no raw value to leak either way). That is a stronger guarantee than a config switch: there is no insecure-by-default state to misconfigure                                                                                                                                                                                                                         |
+| **Collector Tail Sampling**   | **Optional, and OFF in the base stack.** xrpld head sampling is fixed at 1.0 (`Telemetry.h:234` `static constexpr double samplingRatio = 1.0;`), so 100% of traces leave the node. `docker/telemetry/otel-collector-config.yaml` has **no** `tail_sampling` processor either, so the local stack stores 100%. The only shipped policy is in the Grafana Cloud overlay (`otel-collector-config.grafanacloud.yaml:60-67`, wired at `:261`): one `probabilistic` policy at **0.5%**, on the trace-storage branch only so spanmetrics still see every span. Treat sampling as a cost control you opt into — not as a privacy control |
+| **Local Control**             | Node operators have full control over what gets exported                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
+| **No Raw Payloads**           | Transaction content is never recorded, only metadata (hash, type, result)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
+| **Collector-Level Filtering** | Additional redaction/hashing can be configured at OTel Collector                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
+
+#### Account Address Hashing
+
+Account addresses are **always** hashed before they reach the telemetry
+backend — there is no opt-out flag and therefore no insecure-by-default
+failure mode. Protection is applied in two independent layers:
+
+1. **SDK-side** (this node): the path-finding RPC handlers call
+   `redactAccount()` (`xrpl::telemetry`, `Redaction.h`) before setting the
+   `pathfind_source_account` / `pathfind_dest_account` span attributes. For a
+   non-empty address the helper emits the first 16 characters of
+   `sha512Half(address)` as lowercase hex — deterministic (spans for one
+   account still correlate) but non-reversible. An empty address returns empty
+   rather than the hash of the empty string (`Redaction.cpp:18-19`).
+2. **Collector-side** (defense-in-depth): an `attributes/hash` processor in
+   the OpenTelemetry Collector re-hashes those same attributes, so any node
+   that emitted a raw value is still redacted before storage.
+
+#### Collector-Level Data Protection
+
+The shipped base config does exactly one thing here, and it is the
+defense-in-depth layer described above: an `attributes/hash` processor
+(`otel-collector-config.yaml:105-110`) hashing `pathfind_source_account` and
+`pathfind_dest_account`.
+
+**No `peer_address` or `params` scrubbing rule is needed on the trace pipeline,
+and none is shipped.** Earlier drafts prescribed `delete` actions for both.
+Neither attribute is ever emitted: `peer_address` has zero set-sites in the code
+(peer spans carry `peer_id`, an int64 process-local slot number — not an IP and
+not a key), and no span sets a `params` attribute — RPC spans carry `command`,
+`version`, `rpc_role`, `rpc_status`, `request_payload_size`, `is_batch`,
+`batch_size` and `load_type`, never the request body. Adding delete rules for
+absent keys would be harmless but misleading: it would imply the node emits IPs
+and request parameters in spans when it does not.
+
+This says nothing about the **log** pipeline, which is where peer IPs actually
+do leave the node (see the note under "Data NOT Collected" above). An
+`attributes` processor cannot help there — the addresses are inside free-text
+log bodies, not in structured attributes.
+
+If a future span _does_ introduce an IP-bearing or payload-bearing attribute,
+the `attributes` processor is the right place to strip it — and the attribute
+should be added to the §2.4 catalogue in the same change.
+
+#### Configuration Options for Privacy
+
+In `xrpld.cfg`, operators control data collection granularity through the
+`[telemetry]` section. Besides `enabled`, per-component toggles
+(`trace_transactions`, `trace_consensus`, `trace_rpc`, `trace_peer` — the last
+often disabled due to high volume) select which spans are emitted. Account
+address hashing is not configurable: addresses are hashed unconditionally by
+the SDK helper described above, with collector-level hashing as a second
+layer.
+
+> **Key Principle**: Telemetry collects **operational metadata** (timing, counts, hashes) — never **sensitive content** (keys, balances, amounts, raw payloads).
+
+> **See also**: [Securing the OTel Pipeline](./secure-OTel.md) covers transport-level protection for telemetry leaving the node — mTLS to the collector and validation of incoming peer trace context. Privacy controls in this section keep sensitive data out of spans; the security doc keeps the spans themselves out of untrusted hands.
+
+---
+
+## 2.5 Context Propagation Design
+
+> **WS** = WebSocket
+
+### 2.5.0 Deterministic Trace ID Strategy
+
+Both transaction and consensus tracing use **deterministic trace IDs** derived from
+a globally known hash, so all nodes handling the same workflow independently produce
+spans under the same `trace_id`. This is combined with protobuf `span_id` propagation
+for parent-child relay ordering when available.
+
+#### Transactions — `trace_id = txHash[0:16]`
+
+Every node that handles a transaction knows its `txID` (the `uint256` transaction
+hash). The first 16 bytes of this hash are used as the OTel `trace_id`:
+
+```
+uint256 txHash:  A1B2C3D4 E5F6A7B8 C9D0E1F2 A3B4C5D6  E7F8A9B0 C1D2E3F4 A5B6C7D8 E9F0A1B2
+                 |---------- trace_id (16 bytes) ---------|  (remaining 16 bytes unused)
+```
+
+Each node generates a **random 8-byte `span_id`** so its span is unique within the
+shared trace. When protobuf `TraceContext` is present in the incoming `TMTransaction`,
+the sender's `span_id` is extracted and used as the parent — preserving the relay
+chain as a parent-child tree. When absent (older peers, first hop from client), the
+span appears as a root in the same trace — correlation is preserved, only the tree
+structure degrades.
+
+```
+Node A (submitter)        Node B (relay)          Node C (relay)
+trace_id: A1B2...         trace_id: A1B2...       trace_id: A1B2...
+span_id:  1234 (random)   span_id:  5678 (random) span_id:  9ABC (random)
+parent:   (none)          parent:   1234 (proto)   parent:   5678 (proto)
+                               ↑                        ↑
+                       protobuf propagation      protobuf propagation
+```
+
+If protobuf propagation fails at Node B (old peer):
+
+```
+Node A                    Node B (old peer)       Node C
+trace_id: A1B2...         trace_id: A1B2...       trace_id: A1B2...
+span_id:  1234            span_id:  5678          span_id:  9ABC
+parent:   (none)          parent:   (none)        parent:   5678 (proto)
+                          ↑ no parent, but same trace_id — still grouped
+```
+
+#### Consensus — `trace_id = prevLedgerHash[0:16]`
+
+All validators in the same consensus round share the same `previousLedger.id()`.
+The first 16 bytes are used as trace_id. See [Phase 4a implementation status](./06-implementation-phases.md)
+and `createDeterministicContext()` in `RCLConsensus.cpp` for the implementation.
+
+Switchable via `consensus_trace_strategy` config:
+`"deterministic"` (default) or `"attribute"` (random trace_id, correlation via attribute queries).
+
+#### Why Not Random IDs with Propagation Only?
+
+Random trace IDs require **unbroken context propagation** across every hop. In a
+mixed-version network (common during upgrades), older peers silently drop the
+`trace_context` protobuf field. The trace splits and downstream spans become
+impossible to find. Deterministic IDs make correlation **propagation-resilient** — the trace
+backend groups all spans for the same transaction/round regardless of whether
+propagation succeeded.
+
+#### Why Keep Protobuf Propagation?
+
+Deterministic trace IDs alone provide correlation (all spans grouped) but not
+**causality** (which node relayed to which). Protobuf `span_id` propagation adds
+parent-child ordering that shows the exact relay path. The two mechanisms complement
+each other:
+
+| Mechanism                    | Provides                    | Fails when                             |
+| ---------------------------- | --------------------------- | -------------------------------------- |
+| Deterministic trace_id       | Cross-node correlation      | Never (hash is always known)           |
+| Protobuf span_id propagation | Parent-child relay ordering | Older peer drops `trace_context` field |
+
+#### Implementation Reference
+
+The utility function `createDeterministicTxContext(uint256 const& txHash)` follows
+the same pattern as `createDeterministicContext(uint256 const& ledgerId)` in
+`RCLConsensus.cpp`. See [Phase 3 Task 3.9](./Phase3_taskList.md) for the full spec.
+
+### 2.5.1 Propagation Boundaries
+
+```mermaid
+flowchart TB
+    subgraph http["HTTP/WebSocket (RPC)"]
+        w3c["W3C Trace Context Headers:<br/>traceparent:<br/>00-trace_id-span_id-flags<br/>tracestate: xrpld=..."]
+    end
+
+    subgraph protobuf["Protocol Buffers (P2P)"]
+        proto["message TraceContext {<br/>  bytes trace_id = 1;  // 16 bytes<br/>  bytes span_id = 2;   // 8 bytes<br/>  uint32 trace_flags = 3;<br/>  string trace_state = 4;<br/>}"]
+    end
+
+    subgraph jobqueue["JobQueue / Coroutines (Internal Async)"]
+        job["CoroAwareContextStorage<br/>(RuntimeContextStorage override)<br/><br/>Per-coroutine context stack,<br/>installed globally at startup.<br/>Job itself carries no context."]
+    end
+
+    style http fill:#0d47a1,stroke:#082f6a,color:#ffffff
+    style protobuf fill:#1b5e20,stroke:#0d3d14,color:#ffffff
+    style jobqueue fill:#bf360c,stroke:#8c2809,color:#ffffff
+```
+
+**Reading the diagram:**
+
+- **HTTP/WebSocket - RPC (blue)**: For client-facing RPC requests, trace context is propagated using the W3C `traceparent` header. This is the standard approach and works with any OTel-compatible client.
+- **Protocol Buffers - P2P (green)**: For peer-to-peer messages between xrpld nodes, trace context is embedded as a protobuf `TraceContext` message carrying trace_id, span_id, flags, and optional trace_state.
+- **JobQueue / Coroutines - Internal Async (red)**: For asynchronous work within a single node, the ambient OTel context follows the coroutine rather than being carried on the work item. `include/xrpl/core/Job.h` has **no** telemetry include and no `traceContext_` member — an earlier draft of this diagram showed one, and that was never built. Instead `xrpl::telemetry::CoroAwareContextStorage` (`include/xrpl/telemetry/CoroAwareContextStorage.h:84`) overrides the SDK's `RuntimeContextStorage` with a per-coroutine context stack, and is installed as the global storage in `Telemetry::start()` (`Telemetry.cpp:416-419`) before the tracer provider and before the first span. That fixes the wrong-thread scope pop across coroutine yield/resume and keeps log↔trace correlation intact. The storage is never reset — tearing it down while spans may still exist is undefined behaviour in the SDK — so it lives for the process lifetime.
+
+---
+
+## 2.6 Integration with Existing Observability
+
+> **OTLP** = OpenTelemetry Protocol | **WS** = WebSocket
+
+### 2.6.1 Existing Frameworks Comparison
+
+xrpld already has two observability mechanisms. OpenTelemetry complements (not replaces) them:
+
+| Aspect                | PerfLog                       | Beast Insight (StatsD)       | OpenTelemetry             |
+| --------------------- | ----------------------------- | ---------------------------- | ------------------------- |
+| **Type**              | Logging                       | Metrics                      | Distributed Tracing       |
+| **Data**              | JSON log entries              | Counters, gauges, histograms | Spans with context        |
+| **Scope**             | Single node                   | Single node                  | **Cross-node**            |
+| **Output**            | `perf.log` file               | StatsD server                | OTLP Collector            |
+| **Question answered** | "What happened on this node?" | "How many? How fast?"        | "What was the journey?"   |
+| **Correlation**       | By timestamp                  | By metric name               | By `trace_id`             |
+| **Overhead**          | Low (file I/O)                | Low (UDP packets)            | Low-Medium (configurable) |
+
+### 2.6.2 What Each Framework Does Best
+
+#### PerfLog
+
+- **Purpose**: Detailed local event logging for RPC and job execution
+- **Strengths**:
+  - Rich JSON output with timing data
+  - Already integrated in RPC handlers
+  - File-based, no external dependencies
+- **Limitations**:
+  - Single-node only (no cross-node correlation)
+  - No parent-child relationships between events
+  - Manual log parsing required
+
+A PerfLog entry is a JSON object with fields such as `time`, `method`,
+`duration_us`, and `result`.
+
+#### Beast Insight (StatsD)
+
+- **Purpose**: Real-time metrics for monitoring dashboards
+- **Strengths**:
+  - Aggregated metrics (counters, gauges, histograms)
+  - Low overhead (UDP, fire-and-forget)
+  - Good for alerting thresholds
+- **Limitations**:
+  - No request-level detail
+  - No causal relationships
+  - Single-node perspective
+
+In xrpld, Beast Insight is used through `increment` (counters), `gauge`
+(point-in-time values), and `timing` (durations) calls.
+
+#### OpenTelemetry (NEW)
+
+- **Purpose**: Distributed request tracing across nodes
+- **Strengths**:
+  - **Cross-node correlation** via `trace_id`
+  - Parent-child span relationships
+  - Rich attributes per span
+  - Industry standard (CNCF)
+- **Limitations**:
+  - Requires collector infrastructure
+  - Higher complexity than logging
+
+A span is created via `startSpan` (e.g. `"tx.relay"`), annotated with
+attributes such as `tx_hash` and `peer_id`, and is automatically linked to its
+parent through the active context.
+
+### 2.6.3 When to Use Each
+
+| Scenario                                | PerfLog    | StatsD | OpenTelemetry |
+| --------------------------------------- | ---------- | ------ | ------------- |
+| "How many TXs per second?"              | ❌         | ✅     | ✅            |
+| "What's the p99 RPC latency?"           | ❌         | ✅     | ✅            |
+| "Why was this specific TX slow?"        | ⚠️ partial | ❌     | ✅            |
+| "Which node delayed consensus?"         | ❌         | ❌     | ✅            |
+| "What happened on node X at time T?"    | ✅         | ❌     | ✅            |
+| "Show me the TX journey across 5 nodes" | ❌         | ❌     | ✅            |
+
+### 2.6.4 Coexistence Strategy
+
+> **Note**: Phase 7 **added** a native OTel Metrics export path alongside the
+> StatsD bridge; it did not replace it. The diagram below shows the Phase 6
+> state, which is still reachable today via `[insight] server=statsd`. See
+> [Phase7_taskList.md](./Phase7_taskList.md) for the design.
+
+```mermaid
+flowchart TB
+    subgraph xrpld["xrpld Process"]
+        perflog["PerfLog<br/>(JSON to file)"]
+        insight["Beast Insight<br/>(StatsD)"]
+        otel["OpenTelemetry<br/>(Tracing)"]
+    end
+
+    perflog --> perffile["perf.log"]
+    insight --> statsd["StatsD Server"]
+    otel --> collector["OTLP Collector"]
+
+    perffile --> grafana["Grafana<br/>(Unified UI)"]
+    statsd --> grafana
+    collector --> grafana
+
+    style xrpld fill:#212121,stroke:#0a0a0a,color:#ffffff
+    style grafana fill:#bf360c,stroke:#8c2809,color:#ffffff
+```
+
+**Reading the diagram:**
+
+- **xrpld Process (dark gray)**: The single xrpld node running all three observability frameworks side by side. Each framework operates independently with no interference.
+- **PerfLog to perf.log**: PerfLog writes JSON-formatted event logs to a local file. Grafana can ingest these via Loki or a file-based datasource.
+- **Beast Insight to StatsD Server**: Insight sends aggregated metrics (counters, gauges) over UDP to a StatsD server. Grafana reads from StatsD-compatible backends like Graphite or Prometheus (via StatsD exporter).
+- **OpenTelemetry to OTLP Collector**: OTel exports spans over OTLP/HTTP to a Collector, which then forwards to a trace backend (Tempo). (OTLP/gRPC is future work — §2.2.2.)
+- **Grafana (red, unified UI)**: All three data streams converge in Grafana, enabling operators to correlate logs, metrics, and traces in a single dashboard.
+
+**Phase 7 outcome (as shipped)**: Beast Insight gained an `OTelCollector`
+`Collector` implementation that rides the global MeterProvider and exports via
+OTLP/HTTP to the same collector as traces. It is selected with
+`[insight] server=otel`.
+
+The three back ends are **co-equal branches of one `if/else` chain** in
+`makeCollectorManager()` (`CollectorManager.cpp:37-75`), not a migration path:
+
+| `[insight] server=`    | Collector         | Status                                                                                                                                   |
+| ---------------------- | ----------------- | ---------------------------------------------------------------------------------------------------------------------------------------- |
+| `otel`                 | `OTelCollector`   | OTLP/HTTP to the OTel Collector — the recommended setting                                                                                |
+| `statsd`               | `StatsDCollector` | Unchanged from before Phase 7. **Not deprecated**: no warning is logged, no removal is scheduled, and the code path is not marked legacy |
+| absent / anything else | `NullCollector`   | **The default.** A node with no `[insight]` section emits no metrics at all                                                              |
+
+Two corrections to earlier drafts, both of which matter operationally: StatsD
+is not a "deprecated fallback", and `otel` is not the default — you must set it
+explicitly. See [06-implementation-phases.md §6.8](./06-implementation-phases.md),
+[Phase7_taskList.md](./Phase7_taskList.md), and
+[05 §5.8.6](./05-configuration-reference.md) for which `[insight]` keys are live
+under `server=otel` (most are inert).
+
+### 2.6.5 Correlation with Logs
+
+**Shipped in Phase 8 — and not the way this section originally planned it.**
+The design here was a `setTraceId` hook on PerfLog, fed from the
+`rpc.command.<method>` span in `RPCHandler.cpp`. That hook was never built:
+`setTraceId` has zero occurrences in **source** — the only hits in the tree are
+in these plan documents, describing the design that was dropped — and PerfLog's
+JSON output carries no trace ID.
+
+What shipped instead is broader and needs no per-call-site wiring: the **journal
+sink** stamps the IDs onto _every_ log line written while a span is active.
+`Logs::format()` (`src/libxrpl/basics/Log.cpp:304-338`, inside
+`#ifdef XRPL_ENABLE_TELEMETRY`) reads the thread-local OTel context, and when
+the active span context is valid it prefixes the message with
+`trace_id=<32 hex> span_id=<16 hex>`. It inspects the context value directly
+rather than calling `GetSpan()`, so the common no-span path costs no heap
+allocation.
+
+Because the IDs land in the ordinary `debug.log` stream, correlation is
+end-to-end without touching PerfLog: the collector's `filelog` receiver parses
+`trace_id`/`span_id` as optional capture groups and ships the lines to Loki, and
+Grafana links both directions (Tempo `tracesToLogs` → Loki, Loki derived fields
+→ Tempo). Details in [05 §5.8.5](./05-configuration-reference.md).
+
+RPC spans still exist and still set status (OK on success, error with the
+recorded exception on failure) — that part of the original design is intact.
+Only the PerfLog-stamping mechanism was replaced.
+
+---
+
+_Previous: [Architecture Analysis](./01-architecture-analysis.md)_ | _Next: [Implementation Strategy](./03-implementation-strategy.md)_ | _Back to: [Overview](./OpenTelemetryPlan.md)_
--- a/OpenTelemetryPlan/03-implementation-strategy.md
+++ b/OpenTelemetryPlan/03-implementation-strategy.md
@@ -0,0 +1,545 @@
+# Implementation Strategy
+
+> **Parent Document**: [OpenTelemetryPlan.md](./OpenTelemetryPlan.md)
+> **Related**: [Configuration Reference](./05-configuration-reference.md)
+
+---
+
+## 3.1 Directory Structure
+
+The telemetry implementation follows xrpld's existing code organization
+pattern. The tree below is the current on-disk contents of the three telemetry
+directories, and it has three differences from the original design sketch worth
+calling out: `TelemetryConfig.h`, `TraceContext.h`, `SpanAttributes.h` and
+`TraceContext.cpp` were never created (config structs live inside
+`Telemetry.h`, propagation lives in `TraceContextPropagator.h`, and attribute
+constants live in the `*SpanNames.h` headers next to their owning class); the
+metrics work of Phase 7/9 added a whole second module under
+`src/xrpld/telemetry/`, which the sketch predated.
+
+```
+include/xrpl/telemetry/            # libxrpl layer: tracing SDK wrapper
+├── Telemetry.h                    # Interface + Setup config struct + factories
+├── SpanGuard.h                    # RAII span management, factory methods, discard()
+├── SpanNames.h                    # StaticStr/join() + shared span & attr constants
+├── DiscardFlag.h                  # Thread-local discard flag
+├── CoroAwareContextStorage.h      # RuntimeContextStorage override for coroutines
+├── DeterministicIdGenerator.h     # trace_id from txHash / prevLedgerHash
+├── TraceContextPropagator.h       # protobuf TraceContext inject/extract (P2P)
+├── TraceContextValidation.h       # Validation of peer-supplied trace context
+├── Redaction.h                    # redactAccount() — unconditional address hashing
+└── GetObjectMetricNames.h         # getobject_* metric name constants
+
+src/libxrpl/telemetry/
+├── Telemetry.cpp                  # TelemetryImpl + FilteringSpanProcessor + initMetrics()
+├── TelemetryConfig.cpp            # [telemetry] section parsing (makeTelemetrySetup)
+├── SpanGuard.cpp                  # Span/scope guard implementation
+├── CoroAwareContextStorage.cpp
+├── DeterministicIdGenerator.cpp
+├── Redaction.cpp
+└── NullTelemetry.cpp              # No-op impl — ALWAYS compiled (in-source #ifdef)
+
+src/xrpld/telemetry/               # xrpld layer: native metrics + tx tracing helpers
+├── MetricsRegistry.h / .cpp       # Owns the XRPL_METRIC_* instruments + MeterProvider
+├── MetricMacros.h                 # XRPL_METRIC_COUNTER_ADD / _HISTOGRAM_RECORD / ...
+├── ValidationTracker.h            # Validation-agreement tracking (impl in detail/)
+├── detail/ValidationTracker.cpp
+├── ConsensusReceiveTracing.h      # Peer proposal/validation receive spans
+├── PropagationHelpers.h           # Context inject/extract call-site helpers
+├── TxSpanNames.h                  # tx.* span + attribute constants
+└── TxTracing.h                    # Transaction span helpers
+```
+
+Per-class span-name headers deliberately live next to their owning class rather
+than in `telemetry/` — see `ConsensusSpanNames.h`, `TxApplySpanNames.h`,
+`LedgerSpanNames.h`, `RpcSpanNames.h`, `PathFindSpanNames.h`,
+`PeerSpanNames.h`, `TxQSpanNames.h`, `GrpcSpanNames.h`.
+
+---
+
+## 3.2 Implementation Approach
+
+<div align="center">
+
+```mermaid
+%%{init: {'flowchart': {'nodeSpacing': 20, 'rankSpacing': 30}}}%%
+flowchart TB
+    subgraph phase1["Phase 1: Core"]
+        direction LR
+        sdk["SDK Integration"] ~~~ interface["Telemetry Interface"] ~~~ config["Configuration"]
+    end
+
+    subgraph phase2["Phase 2: RPC"]
+        direction LR
+        http["HTTP Context"] ~~~ rpc["RPC Handlers"]
+    end
+
+    subgraph phase3["Phase 3: P2P"]
+        direction LR
+        proto["Protobuf Context"] ~~~ tx["Transaction Relay"]
+    end
+
+    subgraph phase4["Phase 4: Consensus"]
+        direction LR
+        consensus["Consensus Rounds"] ~~~ proposals["Proposals"]
+    end
+
+    phase1 --> phase2 --> phase3 --> phase4
+
+    style phase1 fill:#1565c0,stroke:#0d47a1,color:#ffffff
+    style phase2 fill:#2e7d32,stroke:#1b5e20,color:#ffffff
+    style phase3 fill:#e65100,stroke:#bf360c,color:#ffffff
+    style phase4 fill:#c2185b,stroke:#880e4f,color:#ffffff
+```
+
+</div>
+
+### Key Principles
+
+1. **Minimal Intrusion**: Instrumentation should not alter existing control flow
+2. **Zero-Cost When Disabled**: Use compile-time flags and no-op implementations
+3. **Backward Compatibility**: Protocol Buffer extensions use high field numbers
+4. **Graceful Degradation**: Tracing failures must not affect node operation
+
+---
+
+## 3.3 Performance Overhead Summary
+
+> **OTLP** = OpenTelemetry Protocol
+
+| Metric        | Overhead   | Notes                                            |
+| ------------- | ---------- | ------------------------------------------------ |
+| CPU           | 1-3%       | Of per-transaction CPU cost (~200μs baseline)    |
+| Memory        | ~10 MB     | SDK statics + batch buffer + worker thread stack |
+| Network       | 10-50 KB/s | Compressed OTLP export to collector              |
+| Latency (p99) | <2%        | With proper sampling configuration               |
+
+---
+
+## 3.4 Detailed CPU Overhead Analysis
+
+### 3.4.1 Per-Operation Costs
+
+> **Note on hardware assumptions**: The costs below are based on the official OTel C++ SDK CI benchmarks
+> (969 runs on GitHub Actions 2-core shared runners). On production server hardware (3+ GHz Xeon),
+> expect costs at the **lower end** of each range (~30-50% improvement over CI hardware).
+
+| Operation             | Time (ns) | Frequency              | Impact     |
+| --------------------- | --------- | ---------------------- | ---------- |
+| Span creation         | 500-1000  | Every traced operation | Low        |
+| Span end              | 100-200   | Every traced operation | Low        |
+| SetAttribute (string) | 80-120    | 3-5 per span (typical) | Low        |
+| SetAttribute (int)    | 40-60     | 2-3 per span (typical) | Negligible |
+| AddEvent              | 100-200   | 0-2 per span           | Low        |
+| Context injection     | 150-250   | Per outgoing message   | Low        |
+| Context extraction    | 100-180   | Per incoming message   | Low        |
+| GetCurrent context    | 10-20     | Thread-local access    | Negligible |
+
+> **"3-5 attributes per span" is a typical case, not a bound.** The frequency
+> column above describes the median span (`tx.receive`, `rpc.command.*`). A few
+> spans are deliberately attribute-rich: `consensus.accept.apply` sets **13**
+> attributes (`RCLConsensus.cpp:600-674`), and `consensus.round` /
+> `consensus.establish` are of the same order. Use ~15 as the worst case when
+> sizing per-span attribute cost and memory; the consensus spans that hit it fire
+> once per ~3-second round, so their absolute cost stays in the noise
+> (see §3.4.3).
+
+**Source**: Span creation based on OTel C++ SDK `BM_SpanCreation` benchmark (AlwaysOnSampler +
+SimpleSpanProcessor + InMemoryExporter), median ~1,000 ns on CI hardware. AddEvent includes
+timestamp read + string copy + vector push + mutex acquisition. Context injection/extraction
+confirmed by `BM_SpanCreationWithScope` benchmark delta (~160 ns).
+
+### 3.4.2 Transaction Processing Overhead
+
+<div align="center">
+
+```mermaid
+%%{init: {'pie': {'textPosition': 0.75}}}%%
+pie showData
+    "tx.receive (1400ns)" : 1400
+    "tx.process (1200ns)" : 1200
+    "tx.apply (1200ns)" : 1200
+    "Context inject (200ns)" : 200
+```
+
+**Transaction Tracing Overhead (~4.0μs total)**
+
+</div>
+
+**Overhead percentage**: 4.0 μs / 200 μs (avg tx processing) = **~2.0%**
+
+> **Breakdown**: Each span (tx.receive, tx.process, tx.apply) costs ~1,000 ns for creation plus
+> ~200-400 ns for 3-5 attribute sets. Context injection is ~200 ns (confirmed by benchmarks).
+> On production hardware, expect ~2.6 μs total (~1.3% overhead) due to faster span creation (~500-600 ns).
+>
+> This three-span model predates the apply-pipeline instrumentation. The shipped
+> transaction path also emits `tx.preflight`, `tx.preclaim` and `tx.transactor`
+> (the spans planned here as `tx.validate`), and never emits `tx.relay`. Scale
+> the estimate by span count for a current figure: ~6 spans ≈ 7-8 μs on CI
+> hardware, ~4-5 μs on server hardware. The measured end-to-end cost is in
+> §3.5.3 (~3-4% throughput at head sampling 1.0), which supersedes this
+> bottom-up estimate.
+
+### 3.4.3 Consensus Round Overhead
+
+| Operation              | Count | Cost (ns) | Total      |
+| ---------------------- | ----- | --------- | ---------- |
+| consensus.round span   | 1     | ~1200     | ~1.2 μs    |
+| consensus.phase spans  | 3     | ~1100     | ~3.3 μs    |
+| proposal.receive spans | ~20   | ~1100     | ~22 μs     |
+| proposal.send spans    | ~3    | ~1100     | ~3.3 μs    |
+| Context operations     | ~30   | ~200      | ~6 μs      |
+| **TOTAL**              |       |           | **~36 μs** |
+
+> **Why higher**: Each span costs ~1,000 ns creation + ~100-200 ns for 1-2 attributes, totaling ~1,100-1,200 ns.
+> Context operations remain ~200 ns (confirmed by benchmarks). On production hardware, expect ~24 μs total.
+>
+> The "1-2 attributes" figure understates the shipped consensus spans, which are
+> the attribute-rich ones: `consensus.accept.apply` alone sets 13
+> (`RCLConsensus.cpp:600-674`). Adding ~1 μs per such span still leaves the
+> round total under ~40 μs against a ~3 s round, so the conclusion below is
+> unaffected. Note also that the `consensus.phase` row covers the shipped names
+> `consensus.phase.open`, `consensus.establish` and `consensus.accept` — see
+> [02 §2.3.2](./02-design-decisions.md).
+
+**Overhead percentage**: 36 μs / 3s (typical round) = **~0.001%** (negligible)
+
+### 3.4.4 RPC Request Overhead
+
+| Operation                                  | Cost (ns)    |
+| ------------------------------------------ | ------------ |
+| `rpc.http_request` / `rpc.ws_message` span | ~1200        |
+| `rpc.command.*` span                       | ~1100        |
+| Context extract                            | ~250         |
+| Context inject                             | ~200         |
+| **TOTAL**                                  | **~2.75 μs** |
+
+> **Why higher**: Each span costs ~1,000 ns creation + ~100-200 ns for attributes (command name,
+> version, role). Context extract/inject costs are confirmed by OTel C++ benchmarks.
+
+- Fast RPC (1ms): 2.75 μs / 1ms = **~0.275%**
+- Slow RPC (100ms): 2.75 μs / 100ms = **~0.003%**
+
+---
+
+## 3.5 Memory Overhead Analysis
+
+> **OTLP** = OpenTelemetry Protocol
+
+### 3.5.1 Static Memory
+
+| Component                            | Size        | Allocated  |
+| ------------------------------------ | ----------- | ---------- |
+| TracerProvider singleton             | ~64 KB      | At startup |
+| BatchSpanProcessor (circular buffer) | ~16 KB      | At startup |
+| BatchSpanProcessor (worker thread)   | ~8 MB       | At startup |
+| OTLP/HTTP exporter (client init)     | ~64 KB      | At startup |
+| Propagator registry                  | ~8 KB       | At startup |
+| **Total static**                     | **~8.1 MB** |            |
+
+> **Why higher than earlier estimate**: The BatchSpanProcessor's circular buffer itself is only ~16 KB
+> (2049 x 8-byte `AtomicUniquePtr` entries), but it spawns a dedicated worker thread whose default
+> stack size on Linux is ~8 MB. The OTLP/HTTP exporter allocates a small client and TLS
+> initialization buffer. The worker thread stack dominates the static footprint.
+
+### 3.5.2 Dynamic Memory
+
+| Component            | Size per unit  | Max units  | Peak            |
+| -------------------- | -------------- | ---------- | --------------- |
+| Active span          | ~500-800 bytes | 1000       | ~500-800 KB     |
+| Queued span (export) | ~500 bytes     | 2048       | ~1 MB           |
+| Attribute storage    | ~80 bytes      | 5 per span | Included        |
+| Context storage      | ~64 bytes      | Per thread | ~6.4 KB         |
+| **Total dynamic**    |                |            | **~1.5-1.8 MB** |
+
+> **Why active spans are larger**: An active `Span` object includes the wrapper (~88 bytes: shared_ptr,
+> mutex, unique_ptr to Recordable) plus `SpanData` (~250 bytes: SpanContext, timestamps, name, status,
+> empty containers) plus attribute storage (~200-500 bytes for 3-5 string attributes in a `std::map`).
+> Source: `sdk/src/trace/span.h` and `sdk/include/opentelemetry/sdk/trace/span_data.h`.
+> Queued spans release the wrapper, keeping only `SpanData` + attributes (~500 bytes).
+
+### 3.5.3 Memory Growth Characteristics
+
+```mermaid
+---
+config:
+    xyChart:
+        width: 700
+        height: 400
+---
+xychart-beta
+    title "Memory Usage vs Span Rate (bounded by queue limit)"
+    x-axis "Spans/second" [0, 200, 400, 600, 800, 1000]
+    y-axis "Memory (MB)" 0 --> 12
+    line [8.5, 9.2, 9.6, 9.9, 10.0, 10.0]
+```
+
+**Notes**:
+
+- Memory increases with span rate but **plateaus at queue capacity** (default 2048 spans)
+- Batch export prevents unbounded growth
+- At queue limit, oldest spans are dropped (not blocked)
+- Maximum memory is bounded: ~8.3 MB static (dominated by worker thread stack) + 2048 queued spans x ~500 bytes (~1 MB) + active spans (~0.8 MB) ≈ **~10 MB ceiling**
+- The worker thread stack (~8 MB) is virtual memory; actual RSS depends on stack usage (typically much less)
+
+> **Measured outcome**: A perf-iac comparison (telemetry compiled-in + enabled vs compiled-out,
+> 9 nodes — validators and client-handlers — under sustained payment load) recorded **no measurable
+> RSS increase over the telemetry-off baseline** (~15 GiB mean / ~18–19 GiB peak on both sides),
+> with no OOM, no swap, and no leak across the run. The ~10 MB ceiling above is therefore a
+> provisioning safety margin (dominated by virtual thread-stack address space), not an expected
+> resident-memory increase. Steady-state cost shows up as throughput (~3–4% at head sampling 1.0),
+> not memory.
+
+### 3.5.4 Performance Data Sources
+
+The overhead estimates in Sections 3.3-3.5 are derived from the following sources:
+
+| Source                                           | What it covers                                        | URL                                                                                                                                        |
+| ------------------------------------------------ | ----------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ |
+| OTel C++ SDK CI benchmarks (969 runs)            | Span creation, context activation, sampler overhead   | [Benchmark Dashboard](https://open-telemetry.github.io/opentelemetry-cpp/benchmarks/)                                                      |
+| `api/test/trace/span_benchmark.cc`               | API-level span creation (~22 ns no-op)                | [Source](https://github.com/open-telemetry/opentelemetry-cpp/blob/main/api/test/trace/span_benchmark.cc)                                   |
+| `sdk/test/trace/sampler_benchmark.cc`            | SDK span creation with samplers (~1,000 ns AlwaysOn)  | [Source](https://github.com/open-telemetry/opentelemetry-cpp/blob/main/sdk/test/trace/sampler_benchmark.cc)                                |
+| `sdk/include/.../span_data.h`                    | SpanData memory layout (~250 bytes base)              | [Source](https://github.com/open-telemetry/opentelemetry-cpp/blob/main/sdk/include/opentelemetry/sdk/trace/span_data.h)                    |
+| `sdk/src/trace/span.h`                           | Span wrapper memory layout (~88 bytes)                | [Source](https://github.com/open-telemetry/opentelemetry-cpp/blob/main/sdk/src/trace/span.h)                                               |
+| `sdk/include/.../batch_span_processor_options.h` | Default queue size (2048), batch size (512)           | [Source](https://github.com/open-telemetry/opentelemetry-cpp/blob/main/sdk/include/opentelemetry/sdk/trace/batch_span_processor_options.h) |
+| `sdk/include/.../circular_buffer.h`              | CircularBuffer implementation (AtomicUniquePtr array) | [Source](https://github.com/open-telemetry/opentelemetry-cpp/blob/main/sdk/include/opentelemetry/sdk/common/circular_buffer.h)             |
+| OTLP proto definition                            | Serialized span size estimation                       | [Proto](https://github.com/open-telemetry/opentelemetry-proto/blob/main/opentelemetry/proto/trace/v1/trace.proto)                          |
+
+---
+
+## 3.6 Network Overhead Analysis
+
+### 3.6.1 Export Bandwidth
+
+> **Bytes per span**: Estimates use ~500 bytes/span (conservative upper bound). OTLP protobuf analysis
+> shows a typical span with 3-5 string attributes serializes to ~200-300 bytes raw; with gzip
+> compression (~60-70% of raw) and batching (amortized headers), ~350 bytes/span is more realistic.
+> The table uses the conservative estimate for capacity planning.
+
+**Node → collector bandwidth is always the 100% row.** Head sampling is a
+`static constexpr` 1.0 (`Telemetry.h:234`) with no config key, so every node
+exports every span and the export bandwidth is not tunable from `xrpld.cfg`.
+
+| Sampling Rate         | Spans/sec | Bandwidth  | Where it applies                                                                                                                    |
+| --------------------- | --------- | ---------- | ----------------------------------------------------------------------------------------------------------------------------------- |
+| 100%                  | ~500      | ~250 KB/s  | **The only reachable node→collector figure.** Plan capacity against this row                                                        |
+| 0.5%                  | ~2.5      | ~1.25 KB/s | Collector→backend only, and only with the Grafana Cloud overlay's `tail_sampling` (`otel-collector-config.grafanacloud.yaml:60-67`) |
+| 10% / 1% / error-only | —         | —          | **Not implemented.** No shipped config produces these ratios; treat them as illustrative of what a tail-sampling policy could do    |
+
+The rows below 100% therefore reduce _storage_ cost at the backend, never the
+node's egress. Note also that the shipped 0.5% policy is applied to the
+trace-storage branch only, so the spanmetrics-derived RED metrics still see
+100% of spans and stay exact.
+
+### 3.6.2 Trace Context Propagation
+
+| Message Type           | Context Size | Messages/sec | Overhead    |
+| ---------------------- | ------------ | ------------ | ----------- |
+| TMTransaction          | 25 bytes     | ~100         | ~2.5 KB/s   |
+| TMProposeSet           | 25 bytes     | ~10          | ~250 B/s    |
+| TMValidation           | 25 bytes     | ~50          | ~1.25 KB/s  |
+| **Total P2P overhead** |              |              | **~4 KB/s** |
+
+---
+
+## 3.7 Optimization Strategies
+
+### 3.7.1 Sampling Strategies
+
+#### Head Sampling (node) — fixed, not a decision point
+
+There is no sampling decision on the node. `samplingRatio` is a
+`static constexpr double = 1.0` (`Telemetry.h:234`) and `TelemetryConfig.cpp:139`
+records why nothing is parsed: a per-node ratio would let two nodes make
+opposite keep/drop decisions for the same distributed trace, yielding partial
+traces. The ratio sampler is wrapped in a `ParentBasedSampler` so a span with a
+remote parent honours the upstream flag. The only node-local way to drop a span
+is the explicit, per-call-site `SpanGuard::discard()`, enforced downstream by
+`FilteringSpanProcessor`.
+
+#### Tail Sampling (collector) — aspirational shape
+
+The flowchart below is a **design sketch of a multi-policy tail sampler. It is
+not what ships.** The base collector config has no `tail_sampling` processor at
+all; the Grafana Cloud overlay has exactly one `probabilistic` policy at 0.5%
+with no error or latency carve-outs. Read it as a template for a policy you
+might write, not as a description of this repo — and note that adding
+error/latency policies would need `decision_wait` tuning, since a policy can
+only see spans that arrived within that window.
+
+```mermaid
+flowchart TD
+    trace["New Trace"]
+
+    trace --> errors{"Is Error?"}
+    errors -->|Yes| sample["SAMPLE"]
+    errors -->|No| consensus{"Is Consensus?"}
+
+    consensus -->|Yes| sample
+    consensus -->|No| slow{"Is Slow?"}
+
+    slow -->|Yes| sample
+    slow -->|No| prob{"Probabilistic keep?<br/>(shipped policy: 0.5%)"}
+
+    prob -->|Yes| sample
+    prob -->|No| drop["DROP"]
+
+    style sample fill:#1b5e20,stroke:#0d3d14,color:#fff
+    style drop fill:#b71c1c,stroke:#7f1d1d,color:#fff
+    style trace fill:#0d47a1,stroke:#082f6a,color:#fff
+    style errors fill:#334155,stroke:#1e293b,color:#fff
+    style consensus fill:#334155,stroke:#1e293b,color:#fff
+    style slow fill:#334155,stroke:#1e293b,color:#fff
+    style prob fill:#334155,stroke:#1e293b,color:#fff
+```
+
+### 3.7.2 Batch Tuning Recommendations
+
+| Environment        | Batch Size | Batch Delay | Max Queue |
+| ------------------ | ---------- | ----------- | --------- |
+| Low-latency        | 128        | 1000ms      | 512       |
+| High-throughput    | 1024       | 10000ms     | 8192      |
+| Memory-constrained | 256        | 2000ms      | 512       |
+
+### 3.7.3 Conditional Instrumentation
+
+Instrumentation is gated on two levels. A compile-time feature flag reduces the trace macros to no-ops when telemetry is built out, so disabled builds carry zero cost. At runtime, per-component guards (e.g. `shouldTracePeer()`) skip span creation for components whose tracing is turned off, incurring no overhead beyond a single boolean check.
+
+> The compile-time gate is the macro `XRPL_ENABLE_TELEMETRY`, but that macro is
+> **not** the switch you flip. It is a compile definition added by
+> `CMakeLists.txt` (`add_compile_definitions(XRPL_ENABLE_TELEMETRY)`) when the CMake option `telemetry` is ON.
+> That option is declared ON today (`option(telemetry "Enable OpenTelemetry tracing" ON)`)
+> only so that CI compiles the instrumented build while the telemetry branches are
+> in review; **OFF is the intended default once merged**, flipped in a separate
+> change. Select the value explicitly instead of relying on the default:
+> `-Dtelemetry=ON|OFF` (CMake) or `-o telemetry=True|False` (Conan). See
+> [05 §5.4.2](./05-configuration-reference.md).
+
+---
+
+## 3.8 Links to Detailed Documentation
+
+- **[Configuration Reference](./05-configuration-reference.md)**: Configuration options and collector setup
+- **[Implementation Phases](./06-implementation-phases.md)**: Detailed timeline and milestones
+
+---
+
+## 3.9 Code Intrusiveness Assessment
+
+> **TxQ** = Transaction Queue
+
+This section provides a detailed assessment of how intrusive the OpenTelemetry integration is to the existing xrpld codebase.
+
+### 3.9.3 Risk Assessment by Component
+
+<div align="center">
+
+**Do First** ↖ ↗ **Plan Carefully**
+
+```mermaid
+quadrantChart
+    title Code Intrusiveness Risk Matrix
+    x-axis Low Risk --> High Risk
+    y-axis Low Value --> High Value
+
+    RPC Tracing: [0.2, 0.55]
+    Transaction Relay: [0.55, 0.85]
+    Consensus Tracing: [0.75, 0.92]
+    Peer Message Tracing: [0.85, 0.35]
+    JobQueue Context: [0.3, 0.42]
+    Ledger Acquisition: [0.48, 0.65]
+    PathFinding: [0.38, 0.72]
+    TxQ and Fees: [0.25, 0.62]
+    Validator Mgmt: [0.15, 0.35]
+```
+
+**Optional** ↙ ↘ **Avoid**
+
+</div>
+
+#### Risk Level Definitions
+
+| Risk Level | Definition                                                       | Mitigation                         |
+| ---------- | ---------------------------------------------------------------- | ---------------------------------- |
+| **Low**    | Additive changes only; no modification to existing logic         | Standard code review               |
+| **Medium** | Minor modifications to existing functions; clear boundaries      | Comprehensive unit tests           |
+| **High**   | Changes to core logic or data structures; potential side effects | Integration tests + staged rollout |
+
+### 3.9.4 Architectural Impact Assessment
+
+| Aspect               | Impact  | Justification                                                                                                                                                                                                                                                                                                                                                                                                                                        |
+| -------------------- | ------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| **Data Flow**        | Minimal | Read-only instrumentation; no modification to consensus or transaction data flow                                                                                                                                                                                                                                                                                                                                                                     |
+| **Threading Model**  | Minimal | Context propagation uses thread-local storage (standard OTel pattern)                                                                                                                                                                                                                                                                                                                                                                                |
+| **Memory Model**     | Low     | Bounded queues prevent unbounded growth; RAII ensures cleanup                                                                                                                                                                                                                                                                                                                                                                                        |
+| **Network Protocol** | Low     | Optional fields in protobuf (high field numbers); backward compatible                                                                                                                                                                                                                                                                                                                                                                                |
+| **Configuration**    | None    | New config section; existing configs unaffected                                                                                                                                                                                                                                                                                                                                                                                                      |
+| **Build System**     | Low     | A single CMake option (`telemetry`) selects the whole feature in or out, and builds work either way (`-Dtelemetry=ON` / `-Dtelemetry=OFF`). It is declared ON today only so CI compiles the instrumented paths; **OFF is the intended default once merged**, so the shipped build is opt-in                                                                                                                                                          |
+| **Dependencies**     | Medium  | `opentelemetry-cpp/1.28.0` is a **conditional** requirement, never a hard one: `conanfile.py:152-153` adds it only `if self.options.telemetry`, and `:238-239` adds the matching `libxrpl` component requirement the same way. The option's declared default is `True` today (`conanfile.py:59`), so a default `conan install` does resolve it; with `-o telemetry=False` it never enters the graph and the null implementation supplies the factory |
+
+### 3.9.5 Backward Compatibility
+
+| Compatibility   | Status  | Notes                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
+| --------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| **Config File** | ✅ Full | New `[telemetry]` section is optional                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
+| **Protocol**    | ✅ Full | Optional protobuf fields with high field numbers                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
+| **Build**       | ✅ Full | `-Dtelemetry=OFF` (or `-o telemetry=False`) produces a binary with all tracing compiled out, whatever the option's declared default happens to be. **Not** `-DXRPL_ENABLE_TELEMETRY=OFF`, which does not disable anything — it is not a CMake option, only a compile definition that `CMakeLists.txt:152` adds inside the `if(telemetry)` block. CMake does flag it (`Manually-specified variables were not used by the project`) at the end of configuration, so it is not literally silent — but the warning is easy to scroll past and the resulting binary still has telemetry compiled in. See [05 §5.4.2](./05-configuration-reference.md) |
+| **Runtime**     | ✅ Full | `enabled=0` produces zero overhead                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
+| **API**         | ✅ Full | No changes to public RPC or P2P APIs                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
+
+### 3.9.6 Rollback Strategy
+
+If issues are discovered after deployment:
+
+1. **Immediate**: Set `enabled=0` in `[telemetry]` and restart (zero code change).
+   Also set `[insight] server=` to something other than `otel` if metrics must
+   stop too — `enabled=0` governs tracing, and the metrics pipeline is selected
+   separately ([02 §2.6.4](./02-design-decisions.md)).
+2. **Quick**: Rebuild with `-Dtelemetry=OFF` (CMake) or `-o telemetry=False`
+   (Conan). Pass the flag explicitly — an omitted flag resolves to the option's
+   declared default, which is ON today and OFF once the feature is merged; a
+   build that already has telemetry off needs no rebuild at all.
+   **Do not use `-DXRPL_ENABLE_TELEMETRY=OFF`** — it is not a CMake option, so
+   it is ignored (CMake reports it under `Manually-specified variables were not
+used by the project`) and the rebuilt binary still has telemetry compiled in.
+   This step also drops the `opentelemetry-cpp` dependency, so expect a full
+   rebuild rather than an incremental one.
+3. **Complete**: Revert telemetry commits (clean separation makes this easy)
+
+### 3.9.7 Code Change Examples
+
+**Minimal RPC Instrumentation (Low Intrusiveness):** Instrumenting an RPC handler adds roughly 3-4 lines: one macro to start the span and one or two `setAttribute` calls (command name, status). The span ends automatically via RAII, so the existing control flow — process the request, send the result — is untouched.
+
+**Consensus Instrumentation (Medium Intrusiveness):** Consensus is slightly more intrusive because child spans in later phase transitions need the round's context. Beyond the span-start and attribute macros, this requires **four** new member variables on the adaptor rather than the single `currentRoundContext_` this section originally sketched (`RCLConsensus.h:103,113,123,143`):
+
+- `std::optional<telemetry::SpanGuard> roundSpan_` (`:103`) — the round span
+  itself. It is **created and ended in one place**, `startRoundTracing()`: the
+  previous round's guard is released at `RCLConsensus.cpp:1288-1289`
+  (`if (roundSpan_) roundSpan_.reset();`) and the new one is emplaced a few
+  lines later — at `:1306` or `:1310` on the `"attribute"` strategy, at `:1319`
+  on the default `"deterministic"` one. `preStartRound()` does not create it; it
+  calls `startRoundTracing()` at `:1229`. There is no `reset()` method — the
+  span simply lives until the next round begins. A `SpanGuard` owns no
+  thread-local scope, so emplacing and resetting on different job workers is
+  safe.
+- `telemetry::SpanContext roundSpanContext_` (`:113`) — a lightweight value-type
+  snapshot, captured at the end of `startRoundTracing()` (`:1350`). Child spans
+  link through this, not through an ambient parent, so code running on another
+  worker (e.g. `createValidationSpan()` on `jtACCEPT`) never touches
+  `roundSpan_` cross-thread.
+- `telemetry::SpanContext prevRoundSpanContext_` (`:123`) — the prior round's
+  context, saved at `:1282` **before** the new span overwrites
+  `roundSpanContext_`, so the new round span can carry a follows-from link and
+  consecutive rounds stay navigable.
+- `telemetry::SpanContext acceptSpanContext_` (`:143`) — the current round's
+  accept-span context, set at `:544` and cleared at `:1286` on each new round.
+  `createValidationSpan()` prefers it as the parent and falls back to
+  `roundSpanContext_` (`:1363-1373`), so a stale value must not survive into the
+  next round.
+
+The split is the point: the guard is owned by one thread, the contexts are
+copied freely. The existing round logic itself remains unchanged.
+
+---
+
+_Previous: [Design Decisions](./02-design-decisions.md)_ | _Next: [Configuration Reference](./05-configuration-reference.md)_ | _Back to: [Overview](./OpenTelemetryPlan.md)_
--- a/OpenTelemetryPlan/05-configuration-reference.md
+++ b/OpenTelemetryPlan/05-configuration-reference.md
@@ -0,0 +1,699 @@
+# Configuration Reference
+
+> **Parent Document**: [OpenTelemetryPlan.md](./OpenTelemetryPlan.md)
+> **Related**: [Implementation Phases](./06-implementation-phases.md)
+
+---
+
+## 5.1 xrpld Configuration
+
+> **OTLP** = OpenTelemetry Protocol | **TxQ** = Transaction Queue
+
+### 5.1.1 Configuration File Section
+
+The authoritative `[telemetry]` example lives in `cfg/xrpld-example.cfg`. Telemetry is disabled by default (`enabled=0`); enabling it turns on distributed tracing for transaction flow, consensus, and RPC calls, with traces exported to an OpenTelemetry Collector over OTLP. Head sampling is intentionally fixed at 1.0 (sample everything) and is not configurable — per-node head-sampling would produce broken/partial distributed traces, so volume reduction is delegated to the collector's tail sampling (see Section 7.4.2). Transaction trace IDs are always deterministic (`trace_id = txHash[0:16]`); there is no strategy switch for the transaction path. The full option reference follows.
+
+> **`service_instance_id` is effectively required for `beast::insight`
+> metrics — and only for those.** Three producers resolve the instance id
+> independently, and exactly one of them lacks a node-key fallback:
+>
+> | Producer                                    | Resource built by                            | Unset `service_instance_id` yields             |
+> | ------------------------------------------- | -------------------------------------------- | ---------------------------------------------- |
+> | Traces (and therefore all `span_*` metrics) | `Telemetry::start()`                         | Base58 node public key                         |
+> | Native `XRPL_METRIC_*` (`MetricsRegistry`)  | `MetricsRegistry::initExporterAndProvider()` | Base58 node public key                         |
+> | `beast::insight` (`[insight] server=otel`)  | `TelemetryImpl` **constructor**              | **`service.instance.id` absent** — no fallback |
+>
+> - **Traces**: the tracer resource is built in `Telemetry::start()`
+>   (`Telemetry.cpp:380-387`), which runs after `ApplicationImp::setup()` has
+>   called `setServiceInstanceId()` (`Application.cpp:1323`) with the Base58
+>   node public key. An unset key therefore still yields the node key. The
+>   `spanmetrics` connector derives `span_calls_total` /
+>   `span_duration_milliseconds_*` from those spans, so span metrics inherit
+>   the correct id too.
+> - **Native `XRPL_METRIC_*` metrics** build their **own** MeterProvider
+>   resource in `MetricsRegistry::initExporterAndProvider()`
+>   (`MetricsRegistry.cpp:280`, `:296-304`, provider created at `:339`), and
+>   `ApplicationImp::startTelemetry()` supplies the id with an explicit node-key
+>   fallback (`Application.cpp:1674-1679`: read the config key, and
+>   `if (instanceId.empty() && nodeIdentity_)` substitute
+>   `toBase58(TokenType::NodePublic, …)`). By then `setup()` has resolved
+>   `nodeIdentity_` (`Application.cpp:1315`), so these metrics carry the node
+>   key even with the config key unset.
+> - **`beast::insight` metrics** are the exception. They use the **global**
+>   MeterProvider, whose resource is built in the `TelemetryImpl`
+>   **constructor** (`Telemetry.cpp:321-338`, `initMetrics()` at `:447`),
+>   because insight instruments are created eagerly in subsystem constructors
+>   and would otherwise bind to the noop provider forever. At that point
+>   `serviceInstanceId` is still `""` (`Application.cpp:348` passes an empty
+>   node key), and the code comment at `Telemetry.cpp:333-336` states plainly
+>   that the later setter "cannot change this immutable resource". Worse,
+>   `initMetrics()` sets the attribute **unconditionally**
+>   (`Telemetry.cpp:488`), so the resource carries `service.instance.id=""`
+>   rather than omitting it — whereas `MetricsRegistry` guards the same write
+>   with `if (!instanceId.empty())` (`MetricsRegistry.cpp:302-303`).
+>
+> Result: with `service_instance_id` unset, `beast::insight` metrics — and only
+> those — export with an empty `service.instance.id`. Every shipped Grafana
+> dashboard filters on `service_instance_id=~"$node"`, so **insight-backed
+> panels** lose their per-node dimension; span-metric and `XRPL_METRIC_*`
+> panels are unaffected. Set the key explicitly on any node whose insight
+> metrics are dashboarded.
+>
+> **Known issue.** The asymmetry is a defect, not a design: `MetricsRegistry`
+> already demonstrates the node-key fallback that the global provider needs.
+> A fix would have to resolve the node identity before `TelemetryImpl` is
+> constructed, or make the insight metrics use a late-built provider.
+
+### 5.1.2 Configuration Options Summary
+
+| Option                     | Type   | Default                            | Description                                                                                                                                                                                                                           |
+| -------------------------- | ------ | ---------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `enabled`                  | 0 or 1 | `0`                                | Enable/disable telemetry                                                                                                                                                                                                              |
+| `endpoint`                 | string | `http://localhost:4318/v1/traces`  | OTLP/HTTP collector endpoint for **traces**                                                                                                                                                                                           |
+| `metrics_endpoint`         | string | `http://localhost:4318/v1/metrics` | OTLP/HTTP collector endpoint for the native metrics pipeline (`MetricsRegistry`). Read in `Application.cpp:1670`                                                                                                                      |
+| `use_tls`                  | 0 or 1 | `0`                                | Enable TLS for exporter connection                                                                                                                                                                                                    |
+| `tls_ca_cert`              | string | `""`                               | Path to CA certificate file                                                                                                                                                                                                           |
+| `tls_client_cert`          | string | `""`                               | Client cert (PEM) for mTLS; empty = one-way; if `enabled=1`, needs key + `use_tls=1` or startup fails                                                                                                                                 |
+| `tls_client_key`           | string | `""`                               | Private key (PEM) for `tls_client_cert`; if set with `enabled=1`, needs the cert + `use_tls=1` or fails                                                                                                                               |
+| `batch_size`               | uint   | `512`                              | Spans per export batch                                                                                                                                                                                                                |
+| `batch_delay_ms`           | uint   | `5000`                             | Max delay before sending batch (ms)                                                                                                                                                                                                   |
+| `max_queue_size`           | uint   | `2048`                             | Maximum queued spans                                                                                                                                                                                                                  |
+| `trace_transactions`       | bool   | `true`                             | Enable transaction tracing                                                                                                                                                                                                            |
+| `trace_consensus`          | bool   | `true`                             | Enable consensus tracing                                                                                                                                                                                                              |
+| `trace_rpc`                | bool   | `true`                             | Enable RPC tracing                                                                                                                                                                                                                    |
+| `trace_peer`               | bool   | `true`                             | Enable peer message tracing (high volume)                                                                                                                                                                                             |
+| `trace_ledger`             | bool   | `true`                             | Enable ledger tracing                                                                                                                                                                                                                 |
+| `consensus_trace_strategy` | string | `"deterministic"`                  | Consensus trace ID strategy: `"deterministic"` (trace_id = prevLedgerHash[0:16]) or `"attribute"` (random). Parsed at `TelemetryConfig.cpp:155-156`, consumed at `RCLConsensus.cpp:1291,1296`. **Not validated** — see the note below |
+| `service_name`             | string | `"xrpld"`                          | Service name (`service.name`) for traces and metrics                                                                                                                                                                                  |
+| `service_instance_id`      | string | node public key (base58)           | Instance identifier (`service.instance.id`). Traces, span metrics and native `XRPL_METRIC_*` metrics all fall back to the node key; **`beast::insight` metrics do not** — see the note in §5.1.1                                      |
+
+**`consensus_trace_strategy` is not validated.** `TelemetryConfig.cpp:155-156`
+copies the raw string into `Setup::consensusTraceStrategy` without checking it
+against an allowed set, and the only comparison in the code is
+`strategy == "attribute"` (`RCLConsensus.cpp:1296`). Any unrecognised value —
+including a typo — silently takes the deterministic branch with no log warning.
+The two accepted values are documented at `include/xrpl/telemetry/Telemetry.h:287-292`.
+
+**Not a config key — deterministic transaction trace IDs are unconditional.**
+Earlier drafts of this document listed a `tx_trace_strategy` option
+(`"deterministic"` \| `"attribute"`). No such key exists: `TelemetryConfig.cpp`
+parses no transaction-strategy key, and the transaction trace ID is always
+derived from the transaction hash. Only the **consensus** path has a
+switchable strategy.
+
+**Planned (not yet implemented)**: the following options appear in the design
+documents but are not parsed by `TelemetryConfig.cpp`. They will be added as
+the corresponding subsystems are instrumented:
+
+| Option            | Planned Phase | Purpose                                  |
+| ----------------- | ------------- | ---------------------------------------- |
+| `exporter`        | Future        | Select between OTLP/HTTP and OTLP/gRPC   |
+| `trace_pathfind`  | Phase 2       | Path computation tracing toggle          |
+| `trace_txq`       | Phase 3       | Transaction queue tracing toggle         |
+| `trace_validator` | Future        | Validator list / manifest update tracing |
+| `trace_amendment` | Future        | Amendment voting tracing                 |
+
+> **`exporter` is not read, so do not set it.** Both shipped sample configs
+> (`docker/telemetry/xrpld-telemetry.cfg`,
+> `docker/telemetry/xrpld-telemetry-mainnet.cfg`) used to carry
+> `exporter=otlp_http`; the line had no effect and has since been replaced with
+> a comment saying so. OTLP/HTTP is the only transport that exists (§2.2.1), and
+> `endpoint` / `metrics_endpoint` are the only transport knobs, until the §2.2.2
+> gRPC work lands.
+
+---
+
+## 5.2 Configuration Parser
+
+> **TxQ** = Transaction Queue
+
+The parser `makeTelemetrySetup()` in `src/libxrpl/telemetry/TelemetryConfig.cpp` reads the `[telemetry]` `Section` and populates a `Telemetry::Setup` struct, applying the defaults listed in Section 5.1.2 via `section.valueOr(...)`. It takes `serviceInstanceId` from the `nodePublicKey` argument when the key is absent, applies one unconditional `endpoint` default (`dflt::endpoint`, `TelemetryConfig.cpp:61`, used at `:108`) — the parser has no notion of exporter type — and leaves the sampling ratio at its fixed 1.0 default (a `static constexpr` member, so there is nothing to parse; `TelemetryConfig.cpp:139`, `Telemetry.h:234`). It also rejects two contradictory mTLS configurations outright (`tls_client_cert` without `tls_client_key`, and either without `use_tls=1`) rather than failing open at handshake time.
+
+`metrics_endpoint` is deliberately **not** handled here: it is read separately in `ApplicationImp::startTelemetry()` (`Application.cpp:1670`) and passed to `MetricsRegistry::start()`. Note the consequence — the two metric exporters resolve their URL differently:
+
+| Metric source                              | Exporter built by                            | URL comes from                                                       |
+| ------------------------------------------ | -------------------------------------------- | -------------------------------------------------------------------- |
+| `beast::insight` (`[insight] server=otel`) | `Telemetry::initMetrics()` (global provider) | `endpoint` with a trailing `/v1/traces` rewritten to `/v1/metrics`   |
+| Native `XRPL_METRIC_*` (`MetricsRegistry`) | `MetricsRegistry::initExporterAndProvider()` | `metrics_endpoint`, defaulting to `http://localhost:4318/v1/metrics` |
+
+Setting a non-default `endpoint` therefore moves the insight metrics with it, but leaves the native metrics on localhost unless `metrics_endpoint` is set too.
+
+---
+
+## 5.3 Application Integration
+
+### 5.3.1 ApplicationImp Changes
+
+> **Deferred identity**: The node public key (`nodeIdentity_`) is not
+> available during `ApplicationImp`'s member initializer list — it is
+> resolved later in `setup()`. The `Telemetry` object is therefore
+> constructed with an empty `serviceInstanceId` and patched via
+> `setServiceInstanceId()` once `setup()` has called `getNodeIdentity()`.
+> **This patch reaches traces only.** The **global** MeterProvider resource —
+> the one `beast::insight` metrics use — is already frozen by then (§5.1.1), so
+> those metrics keep whatever `service_instance_id` the config supplied (`""`
+> if it supplied none). Native `XRPL_METRIC_*` metrics do not go through this
+> patch at all: `startTelemetry()` re-reads the config key and applies its own
+> node-key fallback when building `MetricsRegistry`'s separate resource
+> (`Application.cpp:1674-1679`).
+
+`ApplicationImp` (in `src/xrpld/app/main/Application.cpp`) owns a `std::unique_ptr<telemetry::Telemetry> telemetry_`. It is built in the member initializer list via `makeTelemetry(makeTelemetrySetup(...))` with an empty `serviceInstanceId`, then patched in `setup()` by calling `setServiceInstanceId()` with the Base58 node public key (unless the user supplied a custom `service_instance_id`). `start()` and `run()` forward to `telemetry_->start()` / `telemetry_->stop()`, and `getTelemetry()` returns the owned instance.
+
+### 5.3.2 ServiceRegistry Interface Addition
+
+`include/xrpl/core/ServiceRegistry.h` gains a pure-virtual `telemetry::Telemetry& getTelemetry()` (with a forward declaration of `telemetry::Telemetry`), giving every component a uniform accessor for the tracing subsystem.
+
+> **Note:** `Application` extends `ServiceRegistry`, so `getTelemetry()` is
+> available on both. Components that hold a `ServiceRegistry&` (e.g.
+> `NetworkOPsImp`) call `registry_.get().getTelemetry()`. Components that
+> still hold an `Application&` (e.g. `ServerHandler`, `PeerImp`,
+> `RCLConsensusAdaptor`) call `app_.getTelemetry()` directly.
+
+---
+
+## 5.4 CMake Integration
+
+> **OTLP** = OpenTelemetry Protocol
+
+### 5.4.1 Locating the OpenTelemetry SDK
+
+> **Superseded design.** Earlier drafts described a hand-written
+> `cmake/FindOpenTelemetry.cmake` module that aliased `OpenTelemetry::api`,
+> `OpenTelemetry::sdk` and `OpenTelemetry::otlp_grpc_exporter` with a
+> `pkg-config` fallback. That module was never written — it exists in no
+> commit — and the aliasing approach it described does not work with the
+> package the build actually consumes.
+
+The SDK is located by the Conan-generated CMake config package, nothing else:
+
+- `CMakeLists.txt` — `find_package(opentelemetry-cpp CONFIG REQUIRED)`,
+  guarded by the `telemetry` option (§5.4.2). The dependency itself is
+  declared in `conanfile.py:153` (`opentelemetry-cpp/1.28.0`), also guarded —
+  `requirements()` adds it only `if self.options.telemetry` (`:152`), so with
+  the option off the package never enters the dependency graph.
+- Linking goes through the **umbrella** target
+  `opentelemetry-cpp::opentelemetry-cpp`, never the per-component targets.
+  `cmake/XrplCore.cmake:221-225` and `:83-91` record why: the Conan package
+  under-declares its inter-component dependencies, so naming `::api` / `::sdk`
+  individually produces the wrong static-link order and fails at executable
+  link time. The umbrella target supplies both the trace and metrics
+  components with the correct ordering.
+
+### 5.4.2 CMakeLists.txt Changes
+
+The build flag is `telemetry`:
+
+```
+option(telemetry "Enable OpenTelemetry tracing" ON)   # top-level CMakeLists.txt
+```
+
+The declared value is ON **temporarily**, so that CI compiles the telemetry code
+paths while the feature branches are in review. **OFF is the intended default
+once merged**, and the flip is a separate change. Set the value explicitly
+rather than relying on the default:
+
+| To …                      | Use (CMake)       | Use (Conan)          |
+| ------------------------- | ----------------- | -------------------- |
+| Build telemetry in        | `-Dtelemetry=ON`  | `-o telemetry=True`  |
+| Build it out (all no-ops) | `-Dtelemetry=OFF` | `-o telemetry=False` |
+
+When the option is ON, the guarded block below it runs
+`find_package(opentelemetry-cpp CONFIG REQUIRED)` and adds the
+**compile definition** `XRPL_ENABLE_TELEMETRY`.
+
+> **`XRPL_ENABLE_TELEMETRY` is not a CMake option.** It is only ever _added_
+> as a compile definition by `add_compile_definitions(XRPL_ENABLE_TELEMETRY)` in that same block. Passing
+> `-DXRPL_ENABLE_TELEMETRY=OFF` on the CMake command line disables **nothing** —
+> it defines an unused cache variable and telemetry stays compiled in. CMake does
+> report it, at the end of configuration under `Manually-specified variables were
+not used by the project`, so it is not literally silent — but that line is easy
+> to scroll past. Any procedure that relies on it (including the rollback path in
+> [§3.9.6](./03-implementation-strategy.md)) must use `-Dtelemetry=OFF`.
+
+The target is `xrpl.libxrpl.telemetry`, created by `add_module(xrpl telemetry)`
+at `cmake/XrplCore.cmake:231` from `include/xrpl/telemetry/` +
+`src/libxrpl/telemetry/`. There is no `xrpl_telemetry` target.
+
+Selection between the real and the no-op implementation is an **in-source
+`#ifdef`, not a source swap**: `NullTelemetry.cpp` is compiled into the target
+unconditionally (see its header comment, `NullTelemetry.cpp:1-12`). It provides
+the `makeTelemetry()` factory when `XRPL_ENABLE_TELEMETRY` is undefined; when
+the macro is defined, `Telemetry.cpp` provides the factory instead and
+`NullTelemetry`'s virtuals only serve as noop tracer/span fallbacks. Call sites
+compile unchanged either way.
+
+---
+
+## 5.5 OpenTelemetry Collector Configuration
+
+> **OTLP** = OpenTelemetry Protocol | **APM** = Application Performance Monitoring
+
+> **Production hardening**: The configurations in this section are starting points. For production deployments where xrpld ships telemetry across a network to a centrally-hosted collector, see [Securing the OTel Pipeline](./secure-OTel.md) for the required mTLS receiver config, NetworkPolicy, and peer trace-context validation.
+
+The authoritative collector config lives in the repo at `docker/telemetry/otel-collector-config.yaml` (with Tempo backend config in `docker/telemetry/tempo.yaml`). The sections below summarize the development and production shapes of that pipeline.
+
+### 5.5.1 Development / Base Configuration
+
+`docker/telemetry/otel-collector-config.yaml` is the base config used by the
+local stack and by CI. It carries **three** pipelines, not one:
+
+| Pipeline  | Receivers             | Processors                                                       | Exporters                            |
+| --------- | --------------------- | ---------------------------------------------------------------- | ------------------------------------ |
+| `traces`  | `otlp`                | `resource/tier`, `resource/stripsdk`, `attributes/hash`, `batch` | `debug`, `otlp/tempo`, `spanmetrics` |
+| `metrics` | `otlp`, `spanmetrics` | `resource/tier`, `resource/stripsdk`, `batch`                    | `prometheus`                         |
+| `logs`    | `filelog`             | `resource/logs`, `resource/tier`, `resource/stripsdk`, `batch`   | `otlphttp/loki`                      |
+
+Component detail:
+
+- **Receivers.** `otlp` on gRPC `0.0.0.0:4317` and HTTP `0.0.0.0:4318` (both
+  traces and native metrics arrive on 4318). `filelog` tails
+  `/var/log/xrpld/*/debug.log` and runs a `regex_parser` that lifts
+  `timestamp`, `partition`, `severity` and the optional `trace_id`/`span_id`
+  emitted by the journal sink (§5.8.5).
+- **Processors.** `batch` (1s timeout, `send_batch_size: 100`);
+  `resource/tier` (`action: upsert` on `deployment.environment`, `action: insert` on
+  `xrpl.network.type` only when absent); `resource/stripsdk` (drops the
+  `telemetry.sdk.*` attributes); `resource/logs` (`action: upsert` on
+  `service.name` and `job` — only the former becomes a Loki stream label, see
+  the known issue in §5.8.5); `attributes/hash` (hashes
+  `pathfind_source_account` and `pathfind_dest_account`).
+- **Connector.** `spanmetrics` with `namespace: "span"`
+  (`otel-collector-config.yaml:114`) — this is why the derived RED metrics are
+  `span_calls_total` / `span_duration_milliseconds_*`. The connector's own
+  default namespace is **empty**, so without this setting the names would be
+  the bare `calls_total` / `duration_milliseconds_*`. The
+  `traces_spanmetrics_*` family is **not** the connector's default and is not
+  produced here at all — it comes from a different producer, Tempo's
+  `metrics_generator` `span-metrics` processor (`tempo.yaml:75`), whose
+  `remote_write` is commented out in this repo (see §5.8.6). Histogram
+  `unit: ms`
+  with sub-millisecond buckets from `0.01ms`, plus explicit `2s`–`30s`
+  boundaries for consensus and `ledger.acquire`. ~25 low-cardinality
+  dimensions are promoted to labels (`command`, `rpc_status`, `tx_type`,
+  `ter_result`, `stage`, `consensus_mode`, `outcome`, …).
+- **Exporters.** `debug` (console, `verbosity: detailed`), `otlp/tempo`
+  (`tempo:4317`, `tls.insecure: true`), `otlphttp/loki`
+  (`http://loki:3100/otlp` — Loki 3.x native OTLP; the old `loki` exporter was
+  removed in collector-contrib v0.147.0), and `prometheus` on
+  `0.0.0.0:8889` with `resource_to_telemetry_conversion.enabled: true` so the
+  tier and instance resource attributes become Prometheus labels.
+- **Extensions.** `health_check` on `0.0.0.0:13133` only. There is **no**
+  `zpages` extension.
+
+Deliberately absent from the base config — do not document them as present:
+no `memory_limiter`, no `tail_sampling`, no Elastic APM exporter, and no
+`tx_account` attribute rule (the hashed keys are the two `pathfind_*_account`
+ones).
+
+### 5.5.2 Production Configuration
+
+There is no separate "production" collector config in this repo. The one
+overlay that exists is `docker/telemetry/otel-collector-config.grafanacloud.yaml`.
+It is **not** the base config plus one processor — it restructures the service
+graph. The full delta:
+
+| Added by the overlay     | Where  | Purpose                                                                   |
+| ------------------------ | ------ | ------------------------------------------------------------------------- |
+| `basicauth/grafanacloud` | `:29`  | Extension; instance id / API token from the container environment         |
+| `tail_sampling`          | `:60`  | One `probabilistic` policy at **0.5%**, `decision_wait: 10s`              |
+| `transform/cloudlabels`  | `:119` | Copies three resource attrs onto datapoint labels for Cloud (OTLP) ingest |
+| `otlphttp/grafanacloud`  | `:236` | Single OTLP/HTTP exporter fanning all three signals to Grafana Cloud      |
+| `metrics_flush_interval` | `:136` | `spanmetrics` flushes every 15s instead of the 60s default                |
+
+| Removed by the overlay | Consequence                                                                  |
+| ---------------------- | ---------------------------------------------------------------------------- |
+| `attributes/hash`      | **Pathfinding account attributes are not hashed on this config** — see below |
+| `debug`                | No console span dump; collector logs alone when diagnosing ingest            |
+
+Pipelines go from **three** (`traces`, `metrics`, `logs`) to **five**
+(`:253-280`): `traces/metrics`, `traces/store`, `metrics/local`,
+`metrics/cloud`, `logs`. `tail_sampling` is applied in **`traces/store`**
+(`:259-261`) — the branch feeding Tempo and Grafana Cloud — not in a pipeline
+named `traces`, which does not exist in the overlay. The `traces/metrics`
+branch feeds `spanmetrics` unsampled, so the derived RED metrics stay exact
+while stored traces are ~1/200 of ingested ones.
+
+> **Known issue — the cloud path does not hash pathfinding accounts.** The base
+> config runs `attributes/hash` on its `traces` pipeline
+> (`otel-collector-config.yaml:105-110`), hashing `pathfind_source_account` and
+> `pathfind_dest_account` as defense in depth behind the node-side hashing. The
+> overlay declares no such processor and lists none on any of its five
+> pipelines, so on the Grafana Cloud config those two attributes reach **both**
+> Grafana Cloud and the local Tempo with whatever value the node sent. Any node
+> that emits raw addresses loses its second line of defense. Adding
+> `attributes/hash` to `traces/store` and `traces/metrics` would close the gap.
+
+Hardening a collector for a real deployment (TLS/mTLS on the receiver,
+NetworkPolicy, peer trace-context validation) is covered in
+[Securing the OTel Pipeline](./secure-OTel.md) — not by any config file in
+`docker/telemetry/`.
+
+---
+
+## 5.6 Docker Compose Development Environment
+
+> **OTLP** = OpenTelemetry Protocol
+
+The authoritative development stack lives in the repo at `docker/telemetry/docker-compose.yml`. It brings up **six** services on a shared `xrpld-telemetry` bridge network. All images are pinned to exact tags.
+
+| Service          | Image                                          | Published ports        | Role                                                             |
+| ---------------- | ---------------------------------------------- | ---------------------- | ---------------------------------------------------------------- |
+| `otel-collector` | `otel/opentelemetry-collector-contrib:0.158.0` | `4317`, `4318`, `8889` | OTLP ingest, spanmetrics, filelog tail, Prometheus scrape target |
+| `tempo`          | `grafana/tempo:2.9.4`                          | `3200`                 | Trace storage and TraceQL                                        |
+| `loki`           | `grafana/loki:3.7.6`                           | `3100`                 | Log storage for log↔trace correlation                            |
+| `prometheus`     | `prom/prometheus:v3.13.2`                      | `9090`                 | Scrapes the collector's `:8889`                                  |
+| `grafana`        | `grafana/grafana:13.1.2`                       | `3000`                 | Dashboards + provisioned datasources/alerts, anonymous admin     |
+| `renderer`       | `grafana/grafana-image-renderer:v5.12.0`       | `8081`                 | Panel→PNG rendering for image export and alert screenshots       |
+
+Two corrections to earlier drafts:
+
+- **`prometheus` is not optional.** `grafana` lists it in `depends_on` (along
+  with `tempo`, `loki` and `renderer`), and 7 of the 15 dashboards query
+  `span_calls_total` from it. Removing it blanks most panels.
+- **Port `13133` is not published.** The collector's `health_check` extension
+  listens on `13133` inside the container, but the base compose file publishes
+  only `4317`, `4318` and `8889`. Health checks from the host must either add a
+  port mapping or run `docker compose exec`.
+
+The collector also bind-mounts the xrpld log root read-only
+(`${XRPLD_LOG_DIR:-./data/logs}` → `/var/log/xrpld`) for the `filelog`
+receiver, and the `grafana` service reads Slack/email alert secrets from an
+optional gitignored `.env.alerting`.
+
+---
+
+## 5.7 Configuration Architecture
+
+> **OTLP** = OpenTelemetry Protocol
+
+```mermaid
+flowchart TB
+    subgraph config["Configuration Sources"]
+        cfgFile["xrpld.cfg<br/>[telemetry] section"]
+        cmake["CMake option: telemetry<br/>ON today for CI, OFF once merged<br/>when ON, defines XRPL_ENABLE_TELEMETRY"]
+    end
+
+    subgraph init["Initialization"]
+        parse["makeTelemetrySetup()"]
+        factory["makeTelemetry()"]
+    end
+
+    subgraph runtime["Runtime Components"]
+        tracer["TracerProvider"]
+        exporter["OTLP Exporter"]
+        processor["BatchProcessor"]
+    end
+
+    subgraph collector["Collector Pipeline"]
+        recv["Receivers"]
+        proc["Processors"]
+        exp["Exporters"]
+    end
+
+    cfgFile --> parse
+    cmake -->|"compile flag"| parse
+    parse --> factory
+    factory --> tracer
+    tracer --> processor
+    processor --> exporter
+    exporter -->|"OTLP"| recv
+    recv --> proc
+    proc --> exp
+
+    style config fill:#e3f2fd,stroke:#1976d2
+    style runtime fill:#e8f5e9,stroke:#388e3c
+    style collector fill:#fff3e0,stroke:#ff9800
+```
+
+**Reading the diagram:**
+
+- **Configuration Sources**: `xrpld.cfg` provides runtime settings (endpoint, per-component trace toggles) while the CMake `telemetry` option controls whether telemetry is compiled in at all. That option is declared ON today only so CI compiles the instrumented paths; OFF is the intended default once merged, so treat the build gate as something to pass explicitly, and the runtime gate is opt-in either way (`enabled=0` by default). Head sampling is fixed at 1.0 and is not a config option; volume reduction happens via tail sampling in the collector.
+- **Initialization**: `makeTelemetrySetup()` parses config values, then `makeTelemetry()` constructs the provider, processor, and exporter objects.
+- **Runtime Components**: The `TracerProvider` creates spans, the `BatchProcessor` buffers them, and the `OTLP Exporter` serializes and sends them over the wire.
+- **OTLP arrow to Collector**: Trace data leaves the xrpld process via OTLP/HTTP and enters the external Collector pipeline. (OTLP/gRPC is future work — see design decisions §2.2.2.)
+- **Collector Pipeline**: `Receivers` ingest OTLP data, `Processors` apply sampling/filtering/enrichment, and `Exporters` forward traces to storage backends (Tempo, etc.).
+
+---
+
+## 5.8 Grafana Integration
+
+> **APM** = Application Performance Monitoring
+
+Step-by-step instructions for integrating xrpld traces with Grafana.
+
+### 5.8.1 Data Source Configuration
+
+Three datasources are provisioned from `docker/telemetry/grafana/provisioning/datasources/`. There is **no** Elastic APM datasource — `elastic-apm.yaml` was described in an earlier draft but never existed. Elastic remains a _possible_ backend (§7.2); nothing in this repo provisions it.
+
+| File              | Type         | URL                      | uid          | Notes                                                                                                                |
+| ----------------- | ------------ | ------------------------ | ------------ | -------------------------------------------------------------------------------------------------------------------- |
+| `tempo.yaml`      | `tempo`      | `http://tempo:3200`      | `tempo`      | `nodeGraph`, `serviceMap`/`tracesToMetrics` → `prometheus`, `tracesToLogs` → `loki`, plus ~30 Explore search filters |
+| `prometheus.yaml` | `prometheus` | `http://prometheus:9090` | `prometheus` | Backs every span-metric and native-metric panel                                                                      |
+| `loki.yaml`       | `loki`       | `http://loki:3100`       | `loki`       | Backs `log-derived-insights`; derived fields jump back to Tempo                                                      |
+
+The Tempo `tracesToLogs` block is configured as `filterByTraceID: true`,
+`filterBySpanID: false`, **`tags: []`**. The empty tag list is deliberate: the
+correlation is by trace ID alone, so no span attribute needs to exist on both
+sides. Earlier drafts claimed `trace_id` + `tx_hash` tags — that is not what
+ships, and adding a tag Tempo cannot resolve blanks the link.
+
+The search-filter list is the practical index of queryable span attributes:
+resource scope (`service.name`, `service.instance.id`, `service.version`,
+`xrpl.network.id`, `xrpl.network.type`), intrinsics (`name`, `status`,
+`duration`), and span scope (`command`, `rpc_status`, `rpc_role`, `tx_hash`,
+`tx_type`, `tx_status`, `local`, `path`, `suppressed`, `peer_version`,
+`consensus_*`, `ledger_seq`, `ledger_hash`, `close_time_correct`,
+`close_resolution_ms`, `proposers`, `mode_old`, `mode_new`, `txq_status`,
+`ter_code`).
+
+### 5.8.2 Dashboard Provisioning
+
+`grafana/provisioning/dashboards/dashboards.yaml` declares a single `file`
+provider named `xrpld-telemetry`, `orgId: 1`, targeting Grafana folder `xrpld`
+from path `/var/lib/grafana/dashboards` (no `/rippled` suffix), with
+`disableDeletion: false`, `editable: true`, `foldersFromFilesStructure: false`.
+It sets **no** poll interval — Grafana's `updateIntervalSeconds` default
+applies; the "every 30s" figure in earlier drafts was invented.
+
+`docker-compose.yml` mounts `./grafana/dashboards` read-only at that path, so
+the 15 JSON files in `docker/telemetry/grafana/dashboards/` are what gets
+provisioned.
+
+### 5.8.3 Shipped Dashboards
+
+The dashboards are Prometheus-first, not TraceQL-first, and their uids are
+bare (no `xrpld-` prefix). The full inventory and per-panel query reference is
+[09-data-collection-reference.md](./09-data-collection-reference.md); the uids
+are:
+
+`consensus-health`, `fee-market`, `job-queue`, `ledger-data-sync`,
+`ledger-operations`, `log-derived-insights`, `network-traffic`, `node-health`,
+`overlay-traffic-detail`, `peer-network`, `peer-quality`, `rpc-pathfinding`,
+`rpc-performance`, `transaction-overview`, `validator-health`.
+
+> **Panel-count convention used in these docs**: counts are of **data panels
+> only** — `type: "row"` collapsible headers are excluded, because a row is a
+> layout element with no query. A board's raw `panels` array is therefore longer
+> than its stated count (e.g. `rpc-performance` has 19 array entries: 2 rows +
+> 17 data panels).
+
+Two examples described in earlier drafts do not exist and should not be looked
+for: `xrpld-rpc-performance` (the real board is `rpc-performance`, **17** data
+panels in 2 rows, mostly Prometheus span metrics) and `xrpld-tx-tracing` (the
+transaction board is `transaction-overview`, **18** data panels in 3 rows; its
+error panel filters `span_calls_total{span_name="tx.process",
+ter_result!~"tesSUCCESS|"}`, since no `tx.validate` span was ever built — see
+[02 §2.3.2](./02-design-decisions.md)).
+
+> **Why `!~"tesSUCCESS|"` and not `!="tesSUCCESS"`.** An absent Prometheus label
+> compares equal to the empty string, and `tx.process` can end **without** a
+> `ter_result` attribute: `processTransaction()` returns early when
+> `preProcessTransaction()` rejects the transaction
+> (`NetworkOPs.cpp:1437-1438`) and `doTransactionAsync()` returns early when the
+> transaction is already applying (`:1461-1462`); the only setter runs later, at
+> `:1674`. Those series carry `ter_result=""`, which `!="tesSUCCESS"` counts as
+> an error. The regex form excludes the empty value explicitly (the trailing
+> `|` alternative), which is the form `docs/telemetry-runbook.md:1198` and two
+> of the three `transaction-overview.json` failure panels already use.
+
+Every dashboard exposes a `$node` template variable bound to
+`service_instance_id`; see the §5.1.1 note on why `service_instance_id` must be
+set for metric panels to split per node.
+
+### 5.8.4 TraceQL Query Examples
+
+Common queries for xrpld traces. Every span name and attribute below is one
+that the code actually emits — check against the `*SpanNames.h` constants
+before adding more.
+
+```
+# Find all traces for a specific transaction hash
+{resource.service.name="xrpld" && span.tx_hash="ABC123..."}
+
+# Find slow RPC commands (>100ms)
+{resource.service.name="xrpld" && name=~"rpc.command.*"} | duration > 100ms
+
+# Find consensus rounds taking >5 seconds
+{resource.service.name="xrpld" && name="consensus.round"} | duration > 5s
+
+# Find failed transaction processing
+{resource.service.name="xrpld" && name="tx.process" && span.ter_result!="tesSUCCESS"}
+
+# Find failed apply-pipeline stages (preflight / preclaim / transactor)
+{resource.service.name="xrpld" && name=~"tx\\.(preflight|preclaim|transactor)" && status=error}
+
+# Find transactions that arrived from a peer rather than a local client.
+# The `local` attribute lives on tx.process, NOT on tx.receive (see the note
+# below).
+{resource.service.name="xrpld" && name="tx.process" && span.local=false}
+
+# Compare latency across nodes
+{resource.service.name="xrpld" && name="rpc.command.account_info"} | avg(duration) by (resource.service.instance.id)
+```
+
+> Queries in earlier drafts used `tx.validate`, `tx.relay` and
+> `span.relay_count`. None of the three exists: signature/format validation
+> ships as `tx.preflight`/`tx.preclaim`, and no relay span or relay-count
+> attribute was ever built. See [02 §2.3.2](./02-design-decisions.md).
+
+> **TraceQL silently returns nothing for an absent attribute.** Unlike PromQL,
+> where a missing label compares equal to `""`, a TraceQL attribute predicate
+> matches only spans that actually carry the attribute — including negated
+> forms such as `!=` and `=~".*"`. So filtering on the wrong span name yields
+> zero rows with no error. `local` has exactly one set-site,
+> `NetworkOPs.cpp:1417`, and it is on **`tx.process`**: an earlier draft paired
+> it with `name="tx.receive"`, which can never match. Check the attribute's
+> owning span in
+> [09 §1.2](./09-data-collection-reference.md) before combining a `name=` and a
+> `span.` predicate.
+
+### 5.8.5 Correlation with Logs
+
+Log↔trace correlation is **implemented** (Phase 8) and needs no Promtail,
+Fluentd or PerfLog change. Two pieces:
+
+1. **The node stamps the IDs.** The journal sink `Logs::format()`
+   (`src/libxrpl/basics/Log.cpp:304-338`, guarded by `XRPL_ENABLE_TELEMETRY`)
+   reads the thread-local OTel context and, when a valid span is active,
+   prefixes the message with `trace_id=<32 hex> span_id=<16 hex>`. It reads
+   the context value directly rather than calling `GetSpan()` to avoid a heap
+   allocation on the (common) no-span path. This is the ordinary `debug.log`
+   stream — PerfLog is not involved, and the `setTraceId` hook described in
+   earlier drafts was never built.
+2. **The collector ingests them.** The `filelog` receiver tails
+   `/var/log/xrpld/*/debug.log` and its `regex_parser` lifts `trace_id` and
+   `span_id` as optional capture groups (§5.5.1). `resource/logs` applies an
+   `upsert` of `service.name=xrpld`, which Loki promotes to the stream label
+   `service_name`, so the canonical selector is **`{service_name="xrpld"}`**.
+   Logs land in Loki via `otlphttp/loki`.
+
+> **Known issue — the collector's `job` upsert is ineffective for stream
+> selection.** `resource/logs` also applies an `upsert` of a `job=xrpld` attribute
+> (`otel-collector-config.yaml:62-70`) with the stated intent that operators
+> could paste `{job="xrpld"}`. That does not work. On OTLP ingest Loki promotes
+> only an **allow-listed** set of resource attributes to indexed stream labels
+> (`service.name`, `service.namespace`, `service.instance.id`,
+> `deployment.environment`, the `k8s.*`/`cloud.*` keys); `job` is not on that
+> list, and this repo ships no Loki config override — `docker-compose.yml:75`
+> starts Loki with the image's built-in `/etc/loki/local-config.yaml`. `job`
+> therefore lands in **structured metadata**, which cannot appear in a stream
+> selector, so `{job="xrpld"}` returns an empty result rather than an error.
+> Corroboration in-repo: `docs/telemetry-runbook.md:2533` states the same
+> ("`service_name="xrpld"` (not `job="xrpld"`)"), and **all 38 Loki queries** in
+> the shipped dashboards (35 panel targets + 3 Loki-backed template variables)
+> select on `service_name` — **zero** use `job`. Either drop the `job`
+> upsert or add `job` to Loki's `distributor.otlp_config.resource_attributes`
+> allow-list via a mounted Loki config; until then, use `service_name`.
+
+Grafana then links the two directions: the Tempo datasource's `tracesToLogs`
+(`filterByTraceID: true`, `tags: []`) jumps trace → logs, and `loki.yaml`'s
+derived fields jump log → trace.
+
+### 5.8.6 Correlation with Insight/OTel System Metrics
+
+To correlate traces with Beast Insight system metrics:
+
+**Step 1: Export Insight metrics to Prometheus**
+
+Beast Insight metrics are exported natively via OTLP to the OTel Collector,
+which exposes them on its Prometheus endpoint (`:8889`) alongside spanmetrics.
+Set `server=otel` in the `[insight]` section of `xrpld.cfg`; no separate StatsD
+exporter or Prometheus scrape job is needed.
+
+`makeCollectorManager()` (`src/xrpld/app/main/CollectorManager.cpp`) reads these
+`[insight]` keys:
+
+| Key                   | Read at      | Effect when `server=otel`                                                                                                          |
+| --------------------- | ------------ | ---------------------------------------------------------------------------------------------------------------------------------- |
+| `server`              | `:35`        | **Live.** `statsd` \| `otel` \| anything else. Selects the collector implementation.                                               |
+| `address`             | `:39`        | StatsD only — the UDP endpoint.                                                                                                    |
+| `prefix`              | `:41`, `:53` | **Inert.** Stored on the OTel collector but `formatName()` prepends nothing (`OTelCollector.cpp:855-866`); only StatsD applies it. |
+| `endpoint`            | `:50`        | **Inert.** Logged for diagnostics (`OTelCollector.cpp:730`), then unused.                                                          |
+| `service_instance_id` | `:58`        | **Inert.** `(void)`-discarded (`OTelCollector.cpp:722`).                                                                           |
+| `service_name`        | `:64`        | **Inert.** `(void)`-discarded (`OTelCollector.cpp:723`).                                                                           |
+
+> **Where the identity and endpoint actually come from.** `OTelCollector`
+> deliberately does **not** own a pipeline: it fetches the Meter from the
+> **global** MeterProvider that `Telemetry::initMetrics()` published
+> (`OTelCollector.cpp:726-745`). So the resource attributes — including
+> `service.instance.id`, which every dashboard filters on — and the exporter
+> URL both come from the **`[telemetry]`** section, not `[insight]`. The four
+> inert keys above are back-compat leftovers from the StatsD-era signature;
+> setting them has no effect. Set `[telemetry] service_instance_id` instead
+> (§5.1.1).
+
+> **`server=otel` is not the default.** `CollectorManager.cpp:72-75` falls through
+> to `NullCollector` for any unrecognised or absent `server` value, so a node
+> with no `[insight]` section emits no metrics at all.
+
+**Step 2: Correlate metrics to traces**
+
+Today this is a **time-range** correlation, not a click-through one: note the
+window from the metric panel, then search Tempo over the same window filtered
+by `service.instance.id`.
+
+> **Exemplars are NOT implemented.** Earlier drafts of this section instructed
+> operators to rely on automatic exemplars, set
+> `exemplarTraceIdDestinations` on the Prometheus datasource, and enable
+> `exemplar: true` on panels. None of that is wired up: the string `exemplar`
+> appears **nowhere** in `src/libxrpl/telemetry/`, `src/xrpld/telemetry/`, or
+> `docker/telemetry/`. Concretely, three things are missing —
+>
+> 1. the SDK's exemplar filter is left at its default and no reservoir is
+>    configured in `Telemetry::initMetrics()` or `MetricsRegistry`;
+> 2. the collector's `prometheus` exporter has no exemplar settings;
+> 3. `grafana/provisioning/datasources/prometheus.yaml` has no
+>    `exemplarTraceIdDestinations` block.
+>
+> Note also that the query used as an example, `rpc_duration_seconds_bucket`,
+> does not exist — RPC latency histograms are `span_duration_milliseconds_bucket`
+> (spanmetrics, `unit: ms`) and `rpc_method_us` (native). Wiring exemplars end
+> to end is genuine open work; until it lands, do not document a click-through
+> that operators cannot perform.
+
+**Step 3: Jump the other way instead**
+
+Trace → metrics is available now: the Tempo datasource sets
+`tracesToMetrics.datasourceUid: prometheus` with a ±1h time shift, so the
+span-metric queries it builds resolve against the `span_*` families the
+collector's `spanmetrics` connector produces. Trace → logs and log → trace are
+both live (§5.8.5).
+
+> **Known gap — Service Map is configured but inactive.** The Tempo datasource
+> declares `serviceMap.datasourceUid: prometheus`, and `tempo.yaml:70-76`
+> enables the `service-graphs` metrics-generator processor, but the generator
+> has nowhere to write: its `remote_write` block is **commented out**
+> (`tempo.yaml:53-56`), and `prometheus.yml:6-9` defines a single scrape job
+> against `otel-collector:8889` — it never scrapes or accepts writes from
+> Tempo. `traces_service_graph_request_total` and its siblings are therefore
+> never stored, so the Service Map / Node Graph tab renders empty. The same gap
+> means Tempo's `span-metrics` processor never lands
+> `traces_spanmetrics_*` either (§5.5.1) — every span metric the dashboards use
+> comes from the collector's connector instead. Closing it needs both halves:
+> uncomment `remote_write` in `tempo.yaml` **and** enable
+> `--web.enable-remote-write-receiver` on the Prometheus service (or add a
+> scrape job for Tempo).
+
+---
+
+_Previous: [Implementation Strategy](./03-implementation-strategy.md)_ | _Next: [Implementation Phases](./06-implementation-phases.md)_ | _Back to: [Overview](./OpenTelemetryPlan.md)_
--- a/OpenTelemetryPlan/06-implementation-phases.md
+++ b/OpenTelemetryPlan/06-implementation-phases.md
--- a/Show More
+++ b/Show More