chore(json-tx): clang-format pass + regen hook/sfcodes.h

* clang-format-18 pass over the json-tx touchpoints so the clang-format CI workflow is green. * regenerate hook/sfcodes.h (adds the sfJsonTxBody entry) so the verify-generated-headers CI workflow is green.
refactor(json-tx): split hasBody from empty-body rejection
2026-10-27 06:07:10 +00:00 · 2026-06-19 09:21:33 +07:00 · 2026-06-19 09:21:09 +07:00 · 2026-06-19 09:21:09 +07:00 · 2026-06-19 09:21:09 +07:00
393 changed files with 10947 additions and 36546 deletions
@@ -19,15 +19,6 @@ coverage:
      default:
        target: auto
        threshold: 2%
-        paths:
-          # PeerImp is historically hard to exercise in the current unit-test
-          # harness. Keep this list narrow; new testable code should remain
-          # covered by the default patch gate.
-          - "!src/xrpld/overlay/detail/PeerImp.cpp"
-      historically-untested:
-        target: 0%
-        paths:
-          - "src/xrpld/overlay/detail/PeerImp.cpp"
    changes: false

 github_checks:
@@ -50,10 +50,6 @@ inputs:
    options:
      - libstdcxx
      - libcxx
-  conan_deps_cxxflags:
-    description: 'Extra cxxflags applied to Conan dependency package builds only (NOT the rippled build). JSON object keyed by Conan package pattern, e.g. {"grpc/*":["-Wno-foo"]}. Maps to <pattern>:tools.build:cxxflags.'
-    required: false
-    default: '{}'

 outputs:
  cache-hit:
@@ -85,8 +81,6 @@ runs:

    - name: Configure Conan
      shell: bash
-      env:
-        CONAN_DEPS_CXXFLAGS: ${{ inputs.conan_deps_cxxflags }}
      run: |
        # Create the default profile directory if it doesn't exist
        mkdir -p ~/.conan2/profiles
@@ -111,14 +105,7 @@ runs:
        os=${{ inputs.os }}
        EOF

-        # [buildenv] + [conf] sections.
-        # Linux pins compiler executables; macOS uses the system toolchain.
-        # conan_deps_cxxflags (matrix-driven) optionally adds package-pattern
-        # scoped tools.build:cxxflags for Conan dependency builds only - typically
-        # grpc workarounds for newer clang's stricter diagnostics. Because these
-        # are profile-pattern scoped (e.g. grpc/*:...), they do NOT affect the
-        # consumer/rippled toolchain generated for the main build.
-        NEED_CONF=0
+        # Add buildenv and conf sections for Linux (not needed for macOS)
        if [ "${{ inputs.os }}" = "Linux" ] && [ -n "${{ inputs.cc }}" ]; then
          cat >> ~/.conan2/profiles/default <<EOF

@@ -129,38 +116,16 @@ runs:
        [conf]
        tools.build:compiler_executables={"c": "/usr/bin/${{ inputs.cc }}", "cpp": "/usr/bin/${{ inputs.cxx }}"}
        EOF
-          NEED_CONF=1
        fi

-        if [ -n "${CONAN_DEPS_CXXFLAGS}" ] && [ "${CONAN_DEPS_CXXFLAGS}" != "{}" ]; then
-          CONAN_DEPS_CXXFLAGS_LINES="$(python3 - <<'PY'
-        import json
-        import os
-        import sys
+        # Add macOS-specific conf if needed
+        if [ "${{ inputs.os }}" = "Macos" ]; then
+          cat >> ~/.conan2/profiles/default <<EOF

-        raw = os.environ["CONAN_DEPS_CXXFLAGS"]
-        data = json.loads(raw)
-        if not isinstance(data, dict):
-            sys.exit("conan_deps_cxxflags must be a JSON object like {\"grpc/*\": [\"-Wno-...\"]}")
-
-        for pattern, flags in data.items():
-            if not isinstance(pattern, str) or not pattern:
-                sys.exit("conan_deps_cxxflags keys must be non-empty Conan package patterns")
-            if pattern == "&":
-                sys.exit("conan_deps_cxxflags must target dependency package patterns, not the consumer (&)")
-            if not isinstance(flags, list) or not all(isinstance(flag, str) for flag in flags):
-                sys.exit(f"{pattern}: cxxflags must be a JSON string list")
-            if flags:
-                print(f"{pattern}:tools.build:cxxflags={json.dumps(flags, separators=(',', ':'))}")
-        PY
-          )"
-          if [ -n "${CONAN_DEPS_CXXFLAGS_LINES}" ] && [ "$NEED_CONF" = "0" ]; then
-            echo "" >> ~/.conan2/profiles/default
-            echo "[conf]" >> ~/.conan2/profiles/default
-          fi
-          if [ -n "${CONAN_DEPS_CXXFLAGS_LINES}" ]; then
-            printf '%s\n' "${CONAN_DEPS_CXXFLAGS_LINES}" >> ~/.conan2/profiles/default
-          fi
+        [conf]
+        # Workaround for gRPC with newer Apple Clang
+        tools.build:cxxflags=["-Wno-missing-template-arg-list-after-template-kw"]
+        EOF
        fi

        # Display profile for verification
@@ -15,9 +15,6 @@ env:

 jobs:
  checkout:
-    # build publishes to build.xahau.tech, so this workflow only runs from
-    # Xahau/xahaud. build and tests are skipped along with this job.
-    if: github.repository == 'Xahau/xahaud'
    runs-on: [self-hosted, vanity]
    outputs:
      checkout_path: ${{ steps.vars.outputs.checkout_path }}
@@ -89,16 +86,10 @@ jobs:
  cleanup:
    runs-on: [self-hosted, xahaud-build]
    needs: [tests, checkout]
-    if: always() && github.repository == 'Xahau/xahaud'
+    if: always()
    steps:
      - name: Cleanup workspace
        run: |
          CHECKOUT_PATH="${{ needs.checkout.outputs.checkout_path }}"
-          # A run cancelled before checkout has no path; an empty one would
-          # make the rm below delete every run's checkout on the runner.
-          if [[ -z "${CHECKOUT_PATH}" ]]; then
-            echo "No checkout path (cancelled before checkout); nothing to clean"
-            exit 0
-          fi
          echo "Cleaning workspace for ${CHECKOUT_PATH}"
          rm -rf "${{ github.workspace }}/${CHECKOUT_PATH}"
@@ -107,9 +107,6 @@ jobs:
          compiler: apple-clang
          compiler_version: ${{ steps.detect-compiler.outputs.compiler_version }}
          stdlib: libcxx
-          # grpc 1.50.1 trips clang-19+ -Werror=missing-template-arg-list-after-template-kw
-          # on Apple Clang. Drop when grpc is bumped past the fix.
-          conan_deps_cxxflags: '{"grpc/*":["-Wno-missing-template-arg-list-after-template-kw"]}'

      - name: Build
        uses: ./.github/actions/xahau-ga-build
@@ -8,6 +8,12 @@ on:
    types: [opened, synchronize, reopened, labeled, unlabeled]
  schedule:
    - cron: '0 0 * * *'
+  workflow_dispatch:
+    inputs:
+      full_matrix:
+        description: "Force full matrix (6 configs)"
+        required: false
+        default: "false"

 concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
@@ -24,14 +30,37 @@ jobs:
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
+      - name: escape double quotes
+        id: escape
+        shell: bash
+        env:
+          PR_TITLE: ${{ github.event.pull_request.title }}
+        run: |
+          ESCAPED_PR_TITLE="${PR_TITLE//\"/\\\"}"
+          echo "title=${ESCAPED_PR_TITLE}" >> "$GITHUB_OUTPUT"
      - name: Generate build matrix
        id: set-matrix
        shell: python
+        env:
+          GH_TOKEN: ${{ github.token }}
        run: |
          import json
          import os
+          import urllib.request

-          matrix = [
+          # Full matrix with all 6 compiler configurations
+          # Each configuration includes all parameters needed by the build job
+          full_matrix = [
+              {
+                  "compiler_id": "gcc-11-libstdcxx",
+                  "compiler": "gcc",
+                  "cc": "gcc-11",
+                  "cxx": "g++-11",
+                  "compiler_version": 11,
+                  "stdlib": "default",
+                  "configuration": "Debug",
+                  "job_type": "build"
+              },
              {
                  "compiler_id": "gcc-13-libstdcxx",
                  "compiler": "gcc",
@@ -43,26 +72,26 @@ jobs:
                  "job_type": "build"
              },
              {
-                  # Latest stable Clang for the most accurate source-based
-                  # coverage mapping (newer language features, fewer bugs in
-                  # llvm-cov region inference). Pulled from apt.llvm.org since
-                  # Ubuntu 24.04 default repos cap at clang-18.
-                  "compiler_id": "clang-20-libcxx",
-                  "compiler": "clang",
-                  "cc": "clang-20",
-                  "cxx": "clang++-20",
-                  "compiler_version": 20,
-                  "stdlib": "libcxx",
+                  "compiler_id": "gcc-13-libstdcxx",
+                  "compiler": "gcc",
+                  "cc": "gcc-13",
+                  "cxx": "g++-13",
+                  "gcov": "gcov-13",
+                  "compiler_version": 13,
+                  "stdlib": "default",
                  "configuration": "Debug",
-                  "job_type": "coverage",
-                  "coverage_tool": "llvm",
-                  "coverage_format": "lcov",
-                  # grpc 1.50.1 uses `Foo::template Bar(...)` without an
-                  # angle-bracket arg list; clang-19+ promoted that to
-                  # -Werror. Drop when grpc is bumped past the fix.
-                  "conan_deps_cxxflags": {
-                      "grpc/*": ["-Wno-missing-template-arg-list-after-template-kw"]
-                  }
+                  "job_type": "coverage"
+              },
+              {
+                  "compiler_id": "clang-14-libstdcxx-gcc11",
+                  "compiler": "clang",
+                  "cc": "clang-14",
+                  "cxx": "clang++-14",
+                  "compiler_version": 14,
+                  "stdlib": "libstdcxx",
+                  "clang_gcc_toolchain": 11,
+                  "configuration": "Debug",
+                  "job_type": "build"
              },
              {
                  "compiler_id": "clang-16-libstdcxx-gcc13",
@@ -74,8 +103,117 @@ jobs:
                  "clang_gcc_toolchain": 13,
                  "configuration": "Debug",
                  "job_type": "build"
+              },
+              {
+                  "compiler_id": "clang-17-libcxx",
+                  "compiler": "clang",
+                  "cc": "clang-17",
+                  "cxx": "clang++-17",
+                  "compiler_version": 17,
+                  "stdlib": "libcxx",
+                  "configuration": "Debug",
+                  "job_type": "build"
+              },
+              {
+                  # Clang 18 - testing if it's faster than Clang 17 with libc++
+                  # Requires patching Conan v1 settings.yml to add version 18
+                  "compiler_id": "clang-18-libcxx",
+                  "compiler": "clang",
+                  "cc": "clang-18",
+                  "cxx": "clang++-18",
+                  "compiler_version": 18,
+                  "stdlib": "libcxx",
+                  "configuration": "Debug",
+                  "job_type": "build"
              }
          ]
+          
+          # Minimal matrix for PRs and feature branches
+          minimal_matrix = [
+              full_matrix[1],  # gcc-13 (middle-ground gcc)
+              full_matrix[2],  # gcc-13 coverage
+              full_matrix[3]   # clang-14 (mature, stable clang)
+          ]
+          
+          # Determine which matrix to use based on the target branch
+          ref = "${{ github.ref }}"
+          base_ref = "${{ github.base_ref }}"  # For PRs, this is the target branch
+          event_name = "${{ github.event_name }}"
+          pr_title = """${{ steps.escape.outputs.title }}"""
+          pr_labels = """${{ join(github.event.pull_request.labels.*.name, ',') }}"""
+          pr_head_sha = "${{ github.event.pull_request.head.sha }}"
+
+          # Get commit message - for PRs, fetch via API since head_commit.message is empty
+          if event_name == "pull_request" and pr_head_sha:
+              try:
+                  url = f"https://api.github.com/repos/${{ github.repository }}/commits/{pr_head_sha}"
+                  req = urllib.request.Request(url, headers={
+                      "Accept": "application/vnd.github.v3+json",
+                      "Authorization": f"Bearer {os.environ.get('GH_TOKEN', '')}"
+                  })
+                  with urllib.request.urlopen(req) as response:
+                      data = json.load(response)
+                      commit_message = data["commit"]["message"]
+              except Exception as e:
+                  print(f"Failed to fetch commit message: {e}")
+                  commit_message = ""
+          else:
+              commit_message = """${{ github.event.head_commit.message }}"""
+
+          # Debug logging
+          print(f"Event: {event_name}")
+          print(f"Ref: {ref}")
+          print(f"Base ref: {base_ref}")
+          print(f"PR head SHA: {pr_head_sha}")
+          print(f"PR title: {pr_title}")
+          print(f"PR labels: {pr_labels}")
+          print(f"Commit message: {commit_message}")
+          
+          # Manual trigger input to force full matrix.
+          manual_full = "${{ github.event.inputs.full_matrix || 'false' }}" == "true"
+
+          # Label/manual overrides, while preserving existing title/commit behavior.
+          force_full = (
+              manual_full
+              or "[ci-nix-full-matrix]" in commit_message
+              or "[ci-nix-full-matrix]" in pr_title
+              or ("ci-full-build" in pr_labels and "ci-nix-full-matrix" in pr_labels)
+          )
+          force_min = (
+              "ci-full-build" in pr_labels
+          )
+          print(f"Force full matrix: {force_full}")
+          print(f"Force min matrix: {force_min}")
+          
+          # Check if this is targeting a main branch
+          # For PRs: check base_ref (target branch)
+          # For pushes: check ref (current branch)
+          main_branches = ["refs/heads/dev", "refs/heads/release", "refs/heads/candidate"]
+          
+          if force_full:
+              # Override: always use full matrix if forced by manual input or label.
+              use_full = True
+          elif force_min:
+              # Override: always use minimal matrix if ci-full-build label is present.
+              use_full = False
+          elif event_name == "pull_request":
+              # For PRs, base_ref is just the branch name (e.g., "dev", not "refs/heads/dev")
+              # Check if the PR targets release or candidate (more critical branches)
+              use_full = base_ref in ["release", "candidate"]
+          else:
+              # For pushes, ref is the full reference (e.g., "refs/heads/dev")
+              use_full = ref in main_branches
+          
+          # Select the appropriate matrix
+          if use_full:
+              if force_full:
+                  print(f"Using FULL matrix (7 configs) - forced by [ci-nix-full-matrix] tag")
+              else:
+                  print(f"Using FULL matrix (7 configs) - targeting main branch")
+              matrix = full_matrix
+          else:
+              print(f"Using MINIMAL matrix (3 configs) - feature branch/PR")
+              matrix = minimal_matrix

          # Add runs_on based on job_type
          for entry in matrix:
@@ -119,25 +257,9 @@ jobs:

      - name: Install build dependencies
        run: |
-          # Bump apt's default 3 retries; papers over short upstream blips
-          # like the recurring ppa.launchpadcontent.net outages.
-          echo 'Acquire::Retries "5";' > /etc/apt/apt.conf.d/80-retries
          apt-get update
          apt-get install -y software-properties-common
          add-apt-repository ppa:ubuntu-toolchain-r/test -y
-
-          # apt.llvm.org for Clang versions newer than what Ubuntu 24.04 ships
-          # (24.04 default repos cap at clang-18). The bootstrap script adds
-          # the LLVM apt source for the requested version and runs apt-get update.
-          if [ "${{ matrix.compiler }}" = "clang" ] && [ "${{ matrix.compiler_version }}" -ge 19 ]; then
-            apt-get install -y wget gnupg lsb-release
-            wget -qO /tmp/llvm.sh https://apt.llvm.org/llvm.sh
-            chmod +x /tmp/llvm.sh
-            # `all` installs clang + libllvm + lldb + lld + the llvm-N package
-            # (which provides llvm-profdata-N / llvm-cov-N for coverage runs).
-            /tmp/llvm.sh ${{ matrix.compiler_version }} all
-          fi
-
          apt-get update
          apt-get install -y git python3 python-is-python3 pipx
          pipx ensurepath
@@ -210,16 +332,10 @@ jobs:
          pipx install "conan>=2.0,<3"
          echo "$HOME/.local/bin" >> $GITHUB_PATH

-          # Install coverage tooling
+          # Install gcovr for coverage jobs
          if [ "${{ matrix.job_type }}" = "coverage" ]; then
+            pipx install "gcovr>=7,<9"
            apt-get install -y curl lcov
-            if [ "${{ matrix.coverage_tool }}" = "llvm" ]; then
-              # Native LLVM source-based coverage: llvm-profdata + llvm-cov.
-              # The clang-N package doesn't pull these in; the llvm-N package does.
-              apt-get install -y "llvm-${{ matrix.compiler_version }}"
-            else
-              pipx install "gcovr>=7,<9"
-            fi
          fi

      - name: Check environment
@@ -232,15 +348,10 @@ jobs:
          which ${{ matrix.cxx }} && ${{ matrix.cxx }} --version || echo "${{ matrix.cxx }} not found"
          which ccache && ccache --version || echo "ccache not found"

-          # Check coverage tooling
+          # Check gcovr for coverage jobs
          if [ "${{ matrix.job_type }}" = "coverage" ]; then
-            if [ "${{ matrix.coverage_tool }}" = "llvm" ]; then
-              which "llvm-profdata-${{ matrix.compiler_version }}" && "llvm-profdata-${{ matrix.compiler_version }}" --version || echo "llvm-profdata not found"
-              which "llvm-cov-${{ matrix.compiler_version }}" && "llvm-cov-${{ matrix.compiler_version }}" --version || echo "llvm-cov not found"
-            else
-              which gcov && gcov --version || echo "gcov not found"
-              which gcovr && gcovr --version || echo "gcovr not found"
-            fi
+            which gcov && gcov --version || echo "gcov not found"
+            which gcovr && gcovr --version || echo "gcovr not found"
          fi

          echo "---- Full Environment ----"
@@ -267,7 +378,6 @@ jobs:
          cc: ${{ matrix.cc }}
          cxx: ${{ matrix.cxx }}
          stdlib: ${{ matrix.stdlib }}
-          conan_deps_cxxflags: ${{ matrix.conan_deps_cxxflags && toJson(matrix.conan_deps_cxxflags) || '{}' }}
          gha_cache_enabled: 'false' # Disable caching for self hosted runner

      - name: Build
@@ -300,9 +410,8 @@ jobs:
          cache_version: ${{ env.CACHE_VERSION }}
          main_branch: ${{ env.MAIN_BRANCH_NAME }}
          stdlib: ${{ matrix.stdlib }}
-          # Coverage builds are slower due to instrumentation; use fewer parallel jobs to avoid flakiness.
-          # Use *_FLAGS_DEBUG so the build action's stdlib flag (e.g. -stdlib=libc++) in CMAKE_CXX_FLAGS isn't clobbered.
-          cmake-args: '-Dcoverage=ON -Dcoverage_tool=${{ matrix.coverage_tool }} -Dcoverage_format=${{ matrix.coverage_format }} -Dcoverage_test_parallelism=$(($(nproc)/2)) -DCODE_COVERAGE_VERBOSE=ON -DCMAKE_CXX_FLAGS_DEBUG="-g -O0" -DCMAKE_C_FLAGS_DEBUG="-g -O0"'
+          # Coverage builds are slower due to instrumentation; use fewer parallel jobs to avoid flakiness
+          cmake-args: '-Dcoverage=ON -Dcoverage_format=xml -Dcoverage_test_parallelism=$(($(nproc)/2)) -DCODE_COVERAGE_VERBOSE=ON -DCMAKE_CXX_FLAGS="-O0" -DCMAKE_C_FLAGS="-O0"'
          cmake-target: 'coverage'
          ccache_max_size: '100G'

@@ -334,26 +443,22 @@ jobs:
      - name: Move coverage report
        if: matrix.job_type == 'coverage'
        shell: bash
-        env:
-          COVERAGE_FILE: ${{ matrix.coverage_tool == 'llvm' && 'coverage.lcov' || 'coverage.xml' }}
        run: |
-          mv "${{ env.build_dir }}/${COVERAGE_FILE}" ./
-          echo "COVERAGE_FILE=${COVERAGE_FILE}" >> "$GITHUB_ENV"
+          mv "${{ env.build_dir }}/coverage.xml" ./

      - name: Archive coverage report
        if: matrix.job_type == 'coverage'
        uses: actions/upload-artifact@v4
        with:
-          name: ${{ env.COVERAGE_FILE }}-${{ matrix.compiler_id }}
-          path: ${{ env.COVERAGE_FILE }}
+          name: coverage.xml
+          path: coverage.xml
          retention-days: 30

      - name: Upload coverage report
-        if: matrix.job_type == 'coverage' && github.repository == 'Xahau/xahaud'
+        if: matrix.job_type == 'coverage'
        uses: codecov/codecov-action@v5
        with:
-          files: ${{ env.COVERAGE_FILE }}
-          flags: ${{ matrix.coverage_tool }}
+          files: coverage.xml
          fail_ci_if_error: true
          disable_search: true
          verbose: true
@@ -26,7 +26,7 @@ Loop: xrpld.app xrpld.nodestore
  xrpld.app > xrpld.nodestore

 Loop: xrpld.app xrpld.overlay
-  xrpld.overlay == xrpld.app
+  xrpld.overlay ~= xrpld.app

 Loop: xrpld.app xrpld.peerfinder
  xrpld.app > xrpld.peerfinder
@@ -41,7 +41,7 @@ Loop: xrpld.core xrpld.net
  xrpld.net > xrpld.core

 Loop: xrpld.core xrpld.perflog
-  xrpld.perflog ~= xrpld.core
+  xrpld.perflog == xrpld.core

 Loop: xrpld.net xrpld.rpc
  xrpld.rpc > xrpld.net
@@ -12,7 +12,6 @@ libxrpl.server > xrpl.basics
 libxrpl.server > xrpl.json
 libxrpl.server > xrpl.protocol
 libxrpl.server > xrpl.server
-test.app > test.shamap
 test.app > test.toplevel
 test.app > test.unit_test
 test.app > xrpl.basics
@@ -22,7 +21,6 @@ test.app > xrpld.ledger
 test.app > xrpld.nodestore
 test.app > xrpld.overlay
 test.app > xrpld.rpc
-test.app > xrpld.shamap
 test.app > xrpl.hook
 test.app > xrpl.json
 test.app > xrpl.protocol
@@ -34,7 +32,6 @@ test.basics > xrpld.perflog
 test.basics > xrpld.rpc
 test.basics > xrpl.json
 test.basics > xrpl.protocol
-test.beast > test.unit_test
 test.beast > xrpl.basics
 test.conditions > xrpl.basics
 test.conditions > xrpld.conditions
@@ -52,6 +49,8 @@ test.core > test.toplevel
 test.core > test.unit_test
 test.core > xrpl.basics
 test.core > xrpld.core
+test.core > xrpld.perflog
+test.core > xrpl.json
 test.core > xrpl.server
 test.csf > xrpl.basics
 test.csf > xrpld.consensus
@@ -78,11 +77,6 @@ test.ledger > xrpld.app
 test.ledger > xrpld.core
 test.ledger > xrpld.ledger
 test.ledger > xrpl.protocol
-test.net > test.toplevel
-test.net > xrpl.basics
-test.net > xrpld.core
-test.net > xrpld.net
-test.net > xrpl.json
 test.nodestore > test.jtx
 test.nodestore > test.toplevel
 test.nodestore > test.unit_test
@@ -96,12 +90,10 @@ test.overlay > test.toplevel
 test.overlay > test.unit_test
 test.overlay > xrpl.basics
 test.overlay > xrpld.app
-test.overlay > xrpld.core
 test.overlay > xrpld.overlay
 test.overlay > xrpld.peerfinder
 test.overlay > xrpld.shamap
 test.overlay > xrpl.protocol
-test.overlay > xrpl.resource
 test.peerfinder > test.beast
 test.peerfinder > test.unit_test
 test.peerfinder > xrpl.basics
@@ -125,7 +117,6 @@ test.rpc > xrpl.basics
 test.rpc > xrpld.app
 test.rpc > xrpld.core
 test.rpc > xrpld.net
-test.rpc > xrpld.nodestore
 test.rpc > xrpld.overlay
 test.rpc > xrpld.rpc
 test.rpc > xrpld.shamap
@@ -194,7 +185,6 @@ xrpld.overlay > xrpl.basics
 xrpld.overlay > xrpld.core
 xrpld.overlay > xrpld.peerfinder
 xrpld.overlay > xrpld.perflog
-xrpld.overlay > xrpld.shamap
 xrpld.overlay > xrpl.json
 xrpld.overlay > xrpl.protocol
 xrpld.overlay > xrpl.resource
@@ -210,7 +200,6 @@ xrpld.rpc > xrpld.core
 xrpld.rpc > xrpld.ledger
 xrpld.rpc > xrpld.nodestore
 xrpld.rpc > xrpld.shamap
-xrpld.rpc > xrpl.hook
 xrpld.rpc > xrpl.json
 xrpld.rpc > xrpl.protocol
 xrpld.rpc > xrpl.resource
@@ -88,23 +88,15 @@ git remote -v >> release.info &&
 echo "Git status:" >> release.info &&
 git status -v >> release.info &&
 echo "Git log [last 20]:" >> release.info &&
-git log -n 20 >> release.info || exit 1
+git log -n 20 >> release.info;

 if [[ "$4" == "" ]]; then
  # Non GH, local building
  echo "Non GH, local building, no Action runner magic"
 else
  # GH Action, runner
-    if [[ "$(git rev-parse --abbrev-ref HEAD)" == "release" ]]; then
-        echo "building on the release branch... placing it in builds/candidate"
-        mkdir -p /data/builds/candidate
-        cp /io/release-build/xahaud /data/builds/candidate/$(date +%Y).$(date +%-m).$(date +%-d)-$(git rev-parse --abbrev-ref HEAD)+$4
-        cp /io/release-build/release.info /data/builds/candidate/$(date +%Y).$(date +%-m).$(date +%-d)-$(git rev-parse --abbrev-ref HEAD)+$4.releaseinfo
-    else
-        echo "building non-release branch, placing it in builds root"
-        cp /io/release-build/xahaud /data/builds/$(date +%Y).$(date +%-m).$(date +%-d)-$(git rev-parse --abbrev-ref HEAD)+$4
-        cp /io/release-build/release.info /data/builds/$(date +%Y).$(date +%-m).$(date +%-d)-$(git rev-parse --abbrev-ref HEAD)+$4.releaseinfo
-    fi  
+  cp /io/release-build/xahaud /data/builds/$(date +%Y).$(date +%-m).$(date +%-d)-$(git rev-parse --abbrev-ref HEAD)+$4
+  cp /io/release-build/release.info /data/builds/$(date +%Y).$(date +%-m).$(date +%-d)-$(git rev-parse --abbrev-ref HEAD)+$4.releaseinfo
  echo "Published build to: http://build.xahau.tech/"
  echo $(date +%Y).$(date +%-m).$(date +%-d)-$(git rev-parse --abbrev-ref HEAD)+$4
 fi
@@ -166,13 +166,10 @@
 #       ws          Websockets
 #       wss         Secure Websockets
 #       peer        Peer Protocol
-#       pwa         On-ledger AppLoader documents (featurePWALoader), for a
-#                   reverse proxy only. Read "pwa ports" below first.
 #
 #       Restrictions:
 #
 #       Only one port may be configured to support the peer protocol.
-#       The pwa protocol cannot be combined with any other protocol.
 #       A port cannot have websocket and non websocket protocols at the
 #       same time. It is possible have both Websockets and Secure Websockets
 #       together in one port.
@@ -267,119 +264,6 @@
 #       "secure_gateway" connections, then they will be treated as
 #       "admin" addresses.
 #
-#   pwa ports
-#
-#       A port whose protocol is "pwa" serves accounts' on-ledger AppLoader
-#       documents (featurePWALoader) as HTML. This makes the node a web host
-#       for third-party content: anyone can publish a loader to an account
-#       for about a drop per byte, and nothing in protocol takes one down.
-#       Hosting, and a hosting provider's obligations, are yours.
-#
-#       One host per account, on a zone used for nothing else:
-#
-#           https://pwa<account-index>.<domain>/<r-address>
-#           https://<domain>/<r-address>          301 to the above
-#           https://<custom host>/                see custom_domains
-#
-#       The first label of the Host header is "pwa" followed by the decimal
-#       AccountIndex of the account (an account created before AccountIndex
-#       existed has no host); the rest must be one of the port's "domain"
-#       values; the path must be that account's exact r-address. One
-#       trailing slash and a query string are ignored; anything else is
-#       404. The bare zone never serves a document (every page would share
-#       one origin): it redirects, keeping :port and query.
-#       Never set cookies at or above the zone and never serve your own
-#       site from it. Wildcard DNS and a wildcard certificate cover it.
-#
-#       Rules enforced at startup and on every request:
-#
-#       - "pwa" is the port's only protocol; no admin, user/password or
-#         ssl_* keys (terminate TLS at the proxy).
-#       - "domain" is required: the zone(s), comma-separated. The proxy must
-#         forward the Host header unchanged.
-#       - "secure_gateway" is required and may not cover every address.
-#         Every request must come from it carrying X-Forwarded-For, whose
-#         RIGHTMOST entry (the one the proxy wrote) is the client. The
-#         "Forwarded" header is ignored.
-#       - Clients are metered per IPv4 address, per IPv6 /64; a miss costs
-#         what a hit does; over-use is answered 503 until it decays.
-#       - GET and HEAD only; every response closes the connection; only
-#         validated state is served, with an ETag (304 on If-None-Match).
-#         X-NetworkID, X-LedgerSeq, X-LedgerHash and X-PWASeq name the
-#         validated ledger and AppLoaderSequence the document came from, so
-#         a client (a browser extension, say) can vet it against a second
-#         node with the pwa_validate RPC (account, hash of the bytes, host).
-#       - Lookups run on at most two job queue threads, below client RPC;
-#         beyond a bounded backlog they are refused with 503. Put a cache in
-#         front (the ETag makes revalidation cheap).
-#       - The admin RPC "pwa_info" reports requests by outcome and bytes
-#         served; "reset": true zeroes them, "flush_dns": true drops the
-#         custom domain cache (CLI: xahaud pwa_info [reset] [flush_dns]).
-#
-#       Example (also add port_pwa to the [server] list):
-#
-#           [port_pwa]
-#           port = 8088
-#           ip = 127.0.0.1
-#           protocol = pwa
-#           secure_gateway = 127.0.0.1
-#           domain = pwapp.example
-#
-#       with nginx in front, TLS terminated there, Host passed through:
-#
-#           server {
-#               listen 443 ssl;
-#               server_name pwapp.example ~^pwa[0-9]+\.pwapp\.example$;
-#               ssl_certificate     /etc/ssl/wildcard.pwapp.example.pem;
-#               ssl_certificate_key /etc/ssl/wildcard.pwapp.example.key;
-#               location / {
-#                   proxy_pass http://127.0.0.1:8088;
-#                   proxy_set_header Host $host;
-#                   proxy_set_header X-Forwarded-For $remote_addr;
-#               }
-#           }
-#
-#   custom_domains = 0 | 1
-#
-#       Default 0. With 1, a request whose Host is outside every zone is
-#       served as the account named by DNS, so a domain owner can point
-#       their own name at your proxy:
-#
-#           app.example.org.             CNAME  pwa-proxy.your.example.
-#           _xahau-pwa.app.example.org.  TXT    "rAbC..."
-#
-#       The record lives on the _xahau-pwa label beneath the host because
-#       the host is usually a CNAME to your proxy. Exactly one address must
-#       be present there (other TXT strings are ignored; two addresses count
-#       as none). The named account must consent: its Domain field must
-#       equal the host or a parent of it (ignoring case), else 503. Lists
-#       apply as at the account's own host; only the root path is a
-#       document. No usable record is 404 (cached 15 minutes), a resolver
-#       failure 503 (cached 60 s), a record is cached for its TTL (clamped
-#       to 60..3600 s). Lookups run on their own job queue threads, at most
-#       four at a time and one per host; a request that misses the cache is
-#       answered 429 with Retry-After and a refreshing page rather than
-#       waiting, so a flood of Host headers cannot tie up the node. The
-#       admin RPC pwa_info with "flush_dns": true drops the cache. Your
-#       proxy must accept, and hold certificates for, the hosts you will
-#       serve (e.g. Caddy on-demand TLS); xahaud only sees the Host header.
-#
-#   resolver = <IPv4 address>[:port]
-#
-#       The recursive resolver for custom_domains; default is the system
-#       resolver. xahaud does not validate DNSSEC, so prefer a validating
-#       resolver on the same host.
-#
-#       Documents are served with "Content-Security-Policy: sandbox
-#       allow-scripts ...": an opaque origin that cannot read anything from
-#       the node but can still send requests anywhere, including the
-#       visitor's own machine, so keep admin ports behind credentials.
-#
-#       [pwa_allowlist] and [pwa_blocklist], one r-address per line, apply to
-#       every pwa port: if the allowlist is non-empty only those accounts are
-#       served; blocklisted accounts are never served (403), whatever the
-#       allowlist says. An account on both is a startup error.
-#
 #   ssl_key = <filename>
 #   ssl_cert = <filename>
 #   ssl_chain = <filename>
@@ -564,30 +448,6 @@
 #
 #
 #
-# [udp_highway]
-#
-#   0 or 1.
-#
-#   0: Disable the Xahau UDP Superhighway (XUSH). [default]
-#   1: Enable the Xahau UDP Superhighway (XUSH).
-#
-#   The UDP Superhighway is a best-effort transport that runs alongside the
-#   peer protocol. When it is enabled the server also listens for UDP
-#   datagrams on its peer port number, and every transaction it relays to its
-#   peers is also sent, over UDP, to a small random set of other servers that
-#   have the highway enabled. It never replaces the peer protocol: anything
-#   sent over the highway is also relayed normally.
-#
-#   To receive highway traffic, inbound UDP must be allowed to the peer port
-#   (in addition to inbound TCP).
-#
-#   A server that keeps its address private (peer_private = 1, or any server
-#   configured as a validator) only exchanges highway traffic with the peers
-#   listed in [ips_fixed], and never advertises highway endpoints. Fixed peers
-#   are never advertised to other servers.
-#
-#
-#
 # [peers_max]
 #
 #   The largest number of desired peer connections (incoming or outgoing).
@@ -634,7 +494,7 @@
 #
 #   Configure the maximum number of transactions to have in the job queue
 #
-#   Must be a number between 100 and 1000, defaults to 1000
+#   Must be a number between 100 and 1000, defaults to 250
 #
 #
 # [overlay]
@@ -733,7 +593,7 @@
 #       reaches or exceeds this number. After that the limit may still
 #       change, but will stay above the target. If consensus is not
 #       healthy, the limit will be clamped to this value or lower.
-#       Default: 1000.
+#       Default: 50.
 #
 #   maximum_txn_in_ledger = <number>
 #
@@ -814,38 +674,6 @@
 #
 #
 #
-# [early_manifest_sync]
-#
-#   Controls whether, while acquiring its first ledger, the server fetches and
-#   reads the on-ledger validator manifests ahead of the rest of that ledger's
-#   state. Doing so lets it resolve validators' current signing keys, including
-#   rotations and revocations published on-ledger, within seconds of starting
-#   a sync rather than once the whole state has arrived.
-#
-#   The manifests read are those of the master keys on the server's own
-#   validator lists, fetched by key, and as many more from the on-ledger
-#   manifest directory as the manifest cache keeps.
-#
-#   The cost is a dozen or so request/response rounds with peers. With more
-#   than one peer serving the ledger these overlap with fetching the rest of
-#   its state; with only one, they come first.
-#
-#   It also lets a server that starts with nothing but the master keys of its
-#   validators and a few peers find its way. Until it has validated a ledger,
-#   while it holds manifests for too few of its validators to make a quorum,
-#   it reads them from up to three of the ledgers its peers report, the most
-#   widely reported first, every 15 seconds. Every manifest read is checked
-#   against its master key's signature, so a ledger reported by a peer that
-#   is not on the network can leave something out but cannot add anything.
-#
-#   Legal values are:
-#     1 - Fetch the manifests first, and from peers' ledgers if needed
-#     0 - Fetch the ledger's state in the usual order, and read the manifests
-#         from it once it is complete
-#
-#   The default is 1. A ledger without on-ledger manifests costs only the few
-#   nodes on the paths to where their directory and objects would be.
-#
 #
 #
 # [ledger_history]
@@ -1588,19 +1416,6 @@
 #      contains breaking changes that require a new API version number.
 #      They are not ready for public consumption.
 #
-# [hook_validate_rpc]
-#
-#   0 or 1.
-#
-#   0: Disable the hook_validate RPC method
-#   1: Enable the hook_validate RPC method, which runs the Hook guard
-#      checker and WASM VM validation against caller-supplied code using
-#      the current open ledger's rules.
-#
-#   The default is 0 on networked nodes and 1 in standalone mode (-a).
-#   When enabled the method is available to non-admin (user role) clients,
-#   so consider the CPU cost before enabling it on a public-facing node.
-#
 #-------------------------------------------------------------------------------
 #
 # 10. Example Settings
@@ -146,8 +146,11 @@ D686F2538F410C9D0D856788E98E3579595DAF7B38D38887F81ECAC934B06040 HooksUpdate1
 3C43D9A973AA4443EF3FC38E42DD306160FBFFDAB901CD8BAA15D09F2597EB87 NonFungibleTokensV1
 0285B7E5E08E1A8E4C15636F0591D87F73CB6A7B6452A932AD72BBC8E5D1CBE3 fixNFTokenDirV1
 36799EA497B1369B170805C078AEFE6188345F9B3E324C21E9CA3FF574E3C3D6 fixNFTokenNegOffer
+4C499D17719BB365B69010A436B64FD1A82AAB199FC1CEB06962EBD01059FB09 fixXahauV1
+215181D23BF5C173314B5FDB9C872C92DE6CC918483727DE037C0C13E7E6EE9D fixXahauV2
 0D8BF22FF7570D58598D1EF19EBB6E142AD46E59A223FD3816262FBB69345BEA Remit
 7CA0426E7F411D39BB014E57CD9E08F61DE1750F0D41FCD428D9FB80BB7596B0 ZeroB2M
 4B8466415FAB32FFA89D9DCBE166A42340115771DF611A7160F8D7439C87ECD8 fixNSDelete
 EDB4EE4C524E16BDD91D9A529332DED08DCAAA51CC6DC897ACFA1A0ED131C5B6 fix240819
 8063140E9260799D6716756B891CEC3E7006C4E4F277AB84670663A88F94B9C4 fixPageCap
+88693F108C3CD8A967F3F4253A32DEF5E35F9406ACD2A11B88B11D90865763A9 fix240911
@@ -1,156 +0,0 @@
-#[===================================================================[
-  Native LLVM source-based code coverage helper.
-
-  Drives the -fprofile-instr-generate / -fcoverage-mapping pipeline:
-    1. Run instrumented binary with LLVM_PROFILE_FILE=...%m-%p.profraw
-    2. llvm-profdata merge -sparse  -> coverage.profdata
-    3. llvm-cov export/show/report  -> final report
-
-  Output filename per coverage_format:
-    lcov              -> coverage.lcov
-    json              -> coverage.json
-    txt | text        -> coverage.txt
-    html | html-details -> <NAME>/index.html
-#]===================================================================]
-
-include(CMakeParseArguments)
-
-# Locate llvm-profdata / llvm-cov, preferring versioned variants matching the
-# Clang we're building with so we don't accidentally pair clang-20 with
-# llvm-cov-14 (profile format mismatch -> hard failure).
-function(_find_llvm_cov_tools)
-  if(LLVM_PROFDATA_PATH AND LLVM_COV_PATH)
-    return()
-  endif()
-
-  string(REGEX MATCH "^[0-9]+" _major "${CMAKE_CXX_COMPILER_VERSION}")
-
-  set(_pd_names llvm-profdata)
-  set(_cov_names llvm-cov)
-  if(_major)
-    list(PREPEND _pd_names "llvm-profdata-${_major}")
-    list(PREPEND _cov_names "llvm-cov-${_major}")
-  endif()
-
-  # Only delegate to xcrun when the *compiler* is AppleClang. On macOS with
-  # Homebrew/system clang-N, xcrun would resolve to Xcode's llvm tools which
-  # could be a different version - exactly the mismatch we want to avoid.
-  if(APPLE AND CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
-    execute_process(COMMAND xcrun -f llvm-profdata
-      OUTPUT_VARIABLE _pd_xcrun OUTPUT_STRIP_TRAILING_WHITESPACE
-      ERROR_QUIET RESULT_VARIABLE _pd_rc)
-    if(_pd_rc EQUAL 0 AND _pd_xcrun)
-      set(LLVM_PROFDATA_PATH "${_pd_xcrun}" CACHE FILEPATH "llvm-profdata" FORCE)
-    endif()
-    execute_process(COMMAND xcrun -f llvm-cov
-      OUTPUT_VARIABLE _cov_xcrun OUTPUT_STRIP_TRAILING_WHITESPACE
-      ERROR_QUIET RESULT_VARIABLE _cov_rc)
-    if(_cov_rc EQUAL 0 AND _cov_xcrun)
-      set(LLVM_COV_PATH "${_cov_xcrun}" CACHE FILEPATH "llvm-cov" FORCE)
-    endif()
-  endif()
-
-  if(NOT LLVM_PROFDATA_PATH)
-    find_program(LLVM_PROFDATA_PATH NAMES ${_pd_names})
-  endif()
-  if(NOT LLVM_COV_PATH)
-    find_program(LLVM_COV_PATH NAMES ${_cov_names})
-  endif()
-endfunction()
-
-function(setup_target_for_coverage_llvm)
-  set(oneValueArgs NAME FORMAT)
-  set(multiValueArgs EXCLUDE EXECUTABLE EXECUTABLE_ARGS DEPENDENCIES)
-  cmake_parse_arguments(Cov "" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-
-  _find_llvm_cov_tools()
-  if(NOT LLVM_PROFDATA_PATH)
-    message(FATAL_ERROR "llvm-profdata not found (needed for coverage_tool=llvm)")
-  endif()
-  if(NOT LLVM_COV_PATH)
-    message(FATAL_ERROR "llvm-cov not found (needed for coverage_tool=llvm)")
-  endif()
-
-  if(NOT Cov_FORMAT)
-    set(Cov_FORMAT lcov)
-  endif()
-
-  set(_profraw_dir "${PROJECT_BINARY_DIR}/${Cov_NAME}-profraw")
-  set(_profdata    "${PROJECT_BINARY_DIR}/${Cov_NAME}.profdata")
-
-  # Resolve binary path: accept either an absolute path or a bare target name
-  # (resolved against PROJECT_BINARY_DIR). Splice the resolved path back into
-  # Cov_EXECUTABLE so the run command invokes it via absolute path - bare
-  # names aren't on PATH and the build dir isn't `.` either.
-  list(GET Cov_EXECUTABLE 0 _exec_name)
-  if(IS_ABSOLUTE "${_exec_name}")
-    set(_binary "${_exec_name}")
-  else()
-    set(_binary "${PROJECT_BINARY_DIR}/${_exec_name}")
-    list(REMOVE_AT Cov_EXECUTABLE 0)
-    list(PREPEND Cov_EXECUTABLE "${_binary}")
-  endif()
-
-  # llvm-cov takes a single -ignore-filename-regex; OR our excludes together.
-  set(_ignore_regex "")
-  foreach(EXC IN LISTS Cov_EXCLUDE)
-    if(_ignore_regex)
-      string(APPEND _ignore_regex "|")
-    endif()
-    string(APPEND _ignore_regex "${EXC}")
-  endforeach()
-  set(_filter "")
-  if(_ignore_regex)
-    set(_filter "-ignore-filename-regex='${_ignore_regex}'")
-  endif()
-
-  # Pick llvm-cov subcommand + output file for the requested format. Each
-  # branch builds a single shell command string that we'll hand to bash -c.
-  if(Cov_FORMAT STREQUAL "lcov")
-    set(_output "${PROJECT_BINARY_DIR}/coverage.lcov")
-    set(_report_sh "${LLVM_COV_PATH} export -instr-profile='${_profdata}' -format=lcov ${_filter} '${_binary}' > '${_output}'")
-  elseif(Cov_FORMAT STREQUAL "json")
-    set(_output "${PROJECT_BINARY_DIR}/coverage.json")
-    set(_report_sh "${LLVM_COV_PATH} export -instr-profile='${_profdata}' -format=text ${_filter} '${_binary}' > '${_output}'")
-  elseif(Cov_FORMAT STREQUAL "txt" OR Cov_FORMAT STREQUAL "text")
-    set(_output "${PROJECT_BINARY_DIR}/coverage.txt")
-    set(_report_sh "${LLVM_COV_PATH} report -instr-profile='${_profdata}' ${_filter} '${_binary}' > '${_output}'")
-  elseif(Cov_FORMAT STREQUAL "html" OR Cov_FORMAT STREQUAL "html-details")
-    set(_output "${PROJECT_BINARY_DIR}/${Cov_NAME}/index.html")
-    set(_report_sh "${LLVM_COV_PATH} show -instr-profile='${_profdata}' -format=html -output-dir='${PROJECT_BINARY_DIR}/${Cov_NAME}' ${_filter} '${_binary}'")
-  else()
-    message(FATAL_ERROR "coverage_tool=llvm: unsupported coverage_format '${Cov_FORMAT}' (use lcov|json|txt|html)")
-  endif()
-
-  set(_merge_sh "${LLVM_PROFDATA_PATH} merge -sparse -o '${_profdata}' '${_profraw_dir}'/*.profraw")
-
-  if(CODE_COVERAGE_VERBOSE)
-    message(STATUS "[coverage:llvm] binary:   ${_binary}")
-    message(STATUS "[coverage:llvm] profraw:  ${_profraw_dir}")
-    message(STATUS "[coverage:llvm] profdata: ${_profdata}")
-    message(STATUS "[coverage:llvm] format:   ${Cov_FORMAT}")
-    message(STATUS "[coverage:llvm] output:   ${_output}")
-    if(_ignore_regex)
-      message(STATUS "[coverage:llvm] ignore:   ${_ignore_regex}")
-    endif()
-    message(STATUS "[coverage:llvm] merge:    ${_merge_sh}")
-    message(STATUS "[coverage:llvm] report:   ${_report_sh}")
-  endif()
-
-  # %m: hash of the binary, %p: pid. Wipe the dir up front so stale profraw
-  # files can't leak into a fresh merge.
-  add_custom_target(${Cov_NAME}
-    COMMAND ${CMAKE_COMMAND} -E rm -rf "${_profraw_dir}"
-    COMMAND ${CMAKE_COMMAND} -E make_directory "${_profraw_dir}"
-    COMMAND ${CMAKE_COMMAND} -E env
-        "LLVM_PROFILE_FILE=${_profraw_dir}/rippled-%m-%p.profraw"
-        ${Cov_EXECUTABLE} ${Cov_EXECUTABLE_ARGS}
-    COMMAND bash -c "${_merge_sh}"
-    COMMAND bash -c "${_report_sh}"
-    BYPRODUCTS ${_output}
-    WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
-    DEPENDS ${Cov_DEPENDENCIES}
-    VERBATIM
-    COMMENT "Running llvm-cov (${Cov_FORMAT}) -> ${_output}"
-  )
-endfunction()
@@ -11,21 +11,6 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
  return()
 endif()

-if(coverage_tool STREQUAL "llvm")
-  include(CodeCoverageLLVM)
-
-  setup_target_for_coverage_llvm(
-    NAME coverage
-    FORMAT ${coverage_format}
-    EXECUTABLE rippled
-    EXECUTABLE_ARGS --unittest$<$<BOOL:${coverage_test}>:=${coverage_test}> --unittest-jobs ${coverage_test_parallelism} --quiet --unittest-log
-    EXCLUDE "src/test" "include/xrpl/beast/test" "include/xrpl/beast/unit_test" "${CMAKE_BINARY_DIR}/pb-xrpl.libpb"
-    DEPENDENCIES rippled
-  )
-  return()
-endif()
-
-# coverage_tool == "gcov" (default): existing gcovr-driven pipeline.
 include(CodeCoverage)

 # The instructions for these commands come from the `CodeCoverage` module,
@@ -28,17 +28,15 @@ target_compile_options (opts
    $<$<AND:$<BOOL:${is_gcc}>,$<COMPILE_LANGUAGE:CXX>>:-Wsuggest-override>
    $<$<BOOL:${is_gcc}>:-Wno-maybe-uninitialized>
    $<$<BOOL:${perf}>:-fno-omit-frame-pointer>
-    $<$<AND:$<BOOL:${is_gcc}>,$<BOOL:${coverage}>,$<STREQUAL:${coverage_tool},gcov>>:-g --coverage -fprofile-abs-path>
-    $<$<AND:$<BOOL:${is_clang}>,$<BOOL:${coverage}>,$<STREQUAL:${coverage_tool},gcov>>:-g --coverage>
-    $<$<AND:$<BOOL:${is_clang}>,$<BOOL:${coverage}>,$<STREQUAL:${coverage_tool},llvm>>:-g -fprofile-instr-generate -fcoverage-mapping>
+    $<$<AND:$<BOOL:${is_gcc}>,$<BOOL:${coverage}>>:-g --coverage -fprofile-abs-path>
+    $<$<AND:$<BOOL:${is_clang}>,$<BOOL:${coverage}>>:-g --coverage>
    $<$<BOOL:${profile}>:-pg>
    $<$<AND:$<BOOL:${is_gcc}>,$<BOOL:${profile}>>:-p>)

 target_link_libraries (opts
  INTERFACE
-    $<$<AND:$<BOOL:${is_gcc}>,$<BOOL:${coverage}>,$<STREQUAL:${coverage_tool},gcov>>:-g --coverage -fprofile-abs-path>
-    $<$<AND:$<BOOL:${is_clang}>,$<BOOL:${coverage}>,$<STREQUAL:${coverage_tool},gcov>>:-g --coverage>
-    $<$<AND:$<BOOL:${is_clang}>,$<BOOL:${coverage}>,$<STREQUAL:${coverage_tool},llvm>>:-g -fprofile-instr-generate -fcoverage-mapping>
+    $<$<AND:$<BOOL:${is_gcc}>,$<BOOL:${coverage}>>:-g --coverage -fprofile-abs-path>
+    $<$<AND:$<BOOL:${is_clang}>,$<BOOL:${coverage}>>:-g --coverage>
    $<$<BOOL:${profile}>:-pg>
    $<$<AND:$<BOOL:${is_gcc}>,$<BOOL:${profile}>>:-p>)

@@ -97,7 +95,6 @@ target_link_libraries (ripple_syslibs
      crypt32
    >
    $<$<NOT:$<BOOL:${MSVC}>>:dl>
-    $<$<NOT:$<BOOL:${MSVC}>>:resolv>
    $<$<NOT:$<OR:$<BOOL:${MSVC}>,$<BOOL:${APPLE}>>>:rt>)

 if (NOT MSVC)
@@ -29,25 +29,13 @@ if(is_gcc OR is_clang)
    "Unit tests parallelism for the purpose of coverage report.")
  set(coverage_format "html-details" CACHE STRING
    "Output format of the coverage report.")
-  set(coverage_tool "gcov" CACHE STRING
-    "Coverage instrumentation tool: 'gcov' (default, gcc/clang via --coverage + gcovr) or 'llvm' (clang only, native source-based coverage via -fprofile-instr-generate).")
-  set_property(CACHE coverage_tool PROPERTY STRINGS "gcov" "llvm")
-  if(NOT coverage_tool MATCHES "^(gcov|llvm)$")
-    message(FATAL_ERROR "coverage_tool must be 'gcov' or 'llvm', got '${coverage_tool}'")
-  endif()
  set(coverage_extra_args "" CACHE STRING
-    "Additional arguments to pass to gcovr (gcov tool only).")
+    "Additional arguments to pass to gcovr.")
  set(coverage_test "" CACHE STRING
    "On gcc & clang, the specific unit test(s) to run for coverage. Default is all tests.")
  if(coverage_test AND NOT coverage)
    set(coverage ON CACHE BOOL "gcc/clang only" FORCE)
  endif()
-  # Validate after coverage_test may have flipped coverage on, otherwise
-  # `-Dcoverage_tool=llvm -Dcoverage_test=Foo` on gcc would silently slip
-  # past the Clang guard and produce a broken instrumentation combo.
-  if(coverage AND coverage_tool STREQUAL "llvm" AND NOT is_clang)
-    message(FATAL_ERROR "coverage_tool=llvm requires Clang (got ${CMAKE_CXX_COMPILER_ID})")
-  endif()
  option(wextra "compile with extra gcc/clang warnings enabled" ON)
 else()
  set(profile OFF CACHE BOOL "gcc/clang only" FORCE)
@@ -124,7 +112,7 @@ option(beast_no_unit_test_inline
  "Prevents unit test definitions from being inserted into global table"
  OFF)
 option(single_io_service_thread
-  "Restricts the number of threads calling io_context::run to one. \
+  "Restricts the number of threads calling io_service::run to one. \
  This can be useful when debugging."
  OFF)
 option(boost_show_deprecated
@@ -32,9 +32,9 @@ target_link_libraries(ripple_boost
    Boost::date_time
    Boost::filesystem
    Boost::json
-    Boost::process
    Boost::program_options
    Boost::regex
+    Boost::system
    Boost::iostreams
    Boost::thread)
 if(Boost_COMPILER)
@@ -2,160 +2,158 @@ from conan import ConanFile
 from conan.tools.cmake import CMake, CMakeToolchain, cmake_layout
 import re

-
 class Xrpl(ConanFile):
-    name = "xrpl"
+    name = 'xrpl'

-    license = "ISC"
-    author = "John Freeman <[email protected]>"
-    url = "https://github.com/xrplf/rippled"
-    description = "The XRP Ledger"
-    settings = "os", "compiler", "build_type", "arch"
+    license = 'ISC'
+    author = 'John Freeman <[email protected]>'
+    url = 'https://github.com/xrplf/rippled'
+    description = 'The XRP Ledger'
+    settings = 'os', 'compiler', 'build_type', 'arch'
    options = {
-        "assertions": [True, False],
-        "coverage": [True, False],
-        "fPIC": [True, False],
-        "jemalloc": [True, False],
-        "rocksdb": [True, False],
-        "shared": [True, False],
-        "static": [True, False],
-        "tests": [True, False],
-        "unity": [True, False],
-        "xrpld": [True, False],
-        "with_wasmedge": [True, False],
-        "tool_requires_b2": [True, False],
+        'assertions': [True, False],
+        'coverage': [True, False],
+        'fPIC': [True, False],
+        'jemalloc': [True, False],
+        'rocksdb': [True, False],
+        'shared': [True, False],
+        'static': [True, False],
+        'tests': [True, False],
+        'unity': [True, False],
+        'xrpld': [True, False],
+        'with_wasmedge': [True, False],
+        'tool_requires_b2': [True, False],
    }

    requires = [
-        "date/3.0.3",
-        "grpc/1.50.1",
-        "libarchive/3.7.6",
-        "magic_enum/0.9.5",
-        "nudb/2.0.9",
-        "openssl/3.6.0",
-        "soci/4.0.3@xahaud/stable",
-        "xxhash/0.8.2",
-        "zlib/1.3.1",
+        'date/3.0.3',
+        'grpc/1.50.1',
+        'libarchive/3.7.6',
+        'magic_enum/0.9.5',
+        'nudb/2.0.8',
+        'openssl/3.6.0',
+        'soci/4.0.3@xahaud/stable',
+        'xxhash/0.8.2',
+        'zlib/1.3.1',
    ]

    tool_requires = [
-        "protobuf/3.21.12",
+        'protobuf/3.21.12',
    ]

    default_options = {
-        "assertions": False,
-        "coverage": False,
-        "fPIC": True,
-        "jemalloc": False,
-        "rocksdb": True,
-        "shared": False,
-        "static": True,
-        "tests": False,
-        "unity": False,
-        "xrpld": False,
-        "with_wasmedge": True,
-        "tool_requires_b2": False,
-        "boost/*:without_cobalt": True,
-        "date/*:header_only": False,
-        "grpc/*:shared": False,
-        "grpc/*:secure": True,
-        "libarchive/*:shared": False,
-        "libarchive/*:with_acl": False,
-        "libarchive/*:with_bzip2": False,
-        "libarchive/*:with_cng": False,
-        "libarchive/*:with_expat": False,
-        "libarchive/*:with_iconv": False,
-        "libarchive/*:with_libxml2": False,
-        "libarchive/*:with_lz4": True,
-        "libarchive/*:with_lzma": False,
-        "libarchive/*:with_lzo": False,
-        "libarchive/*:with_nettle": False,
-        "libarchive/*:with_openssl": False,
-        "libarchive/*:with_pcreposix": False,
-        "libarchive/*:with_xattr": False,
-        "libarchive/*:with_zlib": False,
-        "lz4/*:shared": False,
-        "openssl/*:shared": False,
-        "protobuf/*:shared": False,
-        "protobuf/*:with_zlib": True,
-        "rocksdb/*:enable_sse": False,
-        "rocksdb/*:lite": False,
-        "rocksdb/*:shared": False,
-        "rocksdb/*:use_rtti": True,
-        "rocksdb/*:with_jemalloc": False,
-        "rocksdb/*:with_lz4": True,
-        "rocksdb/*:with_snappy": True,
-        "snappy/*:shared": False,
-        "soci/*:shared": False,
-        "soci/*:with_sqlite3": True,
-        "soci/*:with_boost": True,
-        "xxhash/*:shared": False,
+        'assertions': False,
+        'coverage': False,
+        'fPIC': True,
+        'jemalloc': False,
+        'rocksdb': True,
+        'shared': False,
+        'static': True,
+        'tests': False,
+        'unity': False,
+        'xrpld': False,
+        'with_wasmedge': True,
+        'tool_requires_b2': False,
+
+        'date/*:header_only': False,
+        'grpc/*:shared': False,
+        'grpc/*:secure': True,
+        'libarchive/*:shared': False,
+        'libarchive/*:with_acl': False,
+        'libarchive/*:with_bzip2': False,
+        'libarchive/*:with_cng': False,
+        'libarchive/*:with_expat': False,
+        'libarchive/*:with_iconv': False,
+        'libarchive/*:with_libxml2': False,
+        'libarchive/*:with_lz4': True,
+        'libarchive/*:with_lzma': False,
+        'libarchive/*:with_lzo': False,
+        'libarchive/*:with_nettle': False,
+        'libarchive/*:with_openssl': False,
+        'libarchive/*:with_pcreposix': False,
+        'libarchive/*:with_xattr': False,
+        'libarchive/*:with_zlib': False,
+        'lz4/*:shared': False,
+        'openssl/*:shared': False,
+        'protobuf/*:shared': False,
+        'protobuf/*:with_zlib': True,
+        'rocksdb/*:enable_sse': False,
+        'rocksdb/*:lite': False,
+        'rocksdb/*:shared': False,
+        'rocksdb/*:use_rtti': True,
+        'rocksdb/*:with_jemalloc': False,
+        'rocksdb/*:with_lz4': True,
+        'rocksdb/*:with_snappy': True,
+        'snappy/*:shared': False,
+        'soci/*:shared': False,
+        'soci/*:with_sqlite3': True,
+        'soci/*:with_boost': True,
+        'xxhash/*:shared': False,
    }

    def set_version(self):
-        path = f"{self.recipe_folder}/src/libxrpl/protocol/BuildInfo.cpp"
-        regex = r"versionString\s?=\s?\"(.*)\""
-        with open(path, "r") as file:
+        path = f'{self.recipe_folder}/src/libxrpl/protocol/BuildInfo.cpp'
+        regex = r'versionString\s?=\s?\"(.*)\"'
+        with open(path, 'r') as file:
            matches = (re.search(regex, line) for line in file)
            match = next(m for m in matches if m)
            self.version = match.group(1)

    def build_requirements(self):
        # These provide build tools (protoc, grpc plugins) that run during build
-        self.tool_requires("grpc/1.50.1")
+        self.tool_requires('grpc/1.50.1')
        # Explicitly require b2 (e.g. for building from source for glibc compatibility)
        if self.options.tool_requires_b2:
-            self.tool_requires("b2/5.3.2")
+            self.tool_requires('b2/5.3.2')

    def configure(self):
-        if self.settings.compiler == "apple-clang":
-            self.options["boost/*"].visibility = "global"
+        if self.settings.compiler == 'apple-clang':
+            self.options['boost/*'].visibility = 'global'

    def requirements(self):
        # Force sqlite3 version to avoid conflicts with soci
-        self.requires("sqlite3/3.47.0", override=True)
+        self.requires('sqlite3/3.47.0', override=True)
        # Force our custom snappy build for all dependencies
-        self.requires("snappy/1.1.10@xahaud/stable", override=True)
+        self.requires('snappy/1.1.10@xahaud/stable', override=True)
        # Force boost version for all dependencies to avoid conflicts
-        self.requires("boost/1.91.0", override=True)
-        self.requires("lz4/1.10.0", force=True)
+        self.requires('boost/1.86.0', override=True)
+        self.requires('lz4/1.10.0', force=True)

        if self.options.with_wasmedge:
-            self.requires("wasmedge/0.11.2@xahaud/stable")
+            self.requires('wasmedge/0.11.2@xahaud/stable')
        if self.options.jemalloc:
-            self.requires("jemalloc/5.3.0")
+            self.requires('jemalloc/5.3.0')
        if self.options.rocksdb:
-            self.requires("rocksdb/6.29.5")
+            self.requires('rocksdb/6.29.5')

    exports_sources = (
-        "CMakeLists.txt",
-        "bin/getRippledInfo",
-        "cfg/*",
-        "cmake/*",
-        "external/*",
-        "include/*",
-        "src/*",
+        'CMakeLists.txt',
+        'bin/getRippledInfo',
+        'cfg/*',
+        'cmake/*',
+        'external/*',
+        'include/*',
+        'src/*',
    )

    def layout(self):
        cmake_layout(self)
        # Fix this setting to follow the default introduced in Conan 1.48
        # to align with our build instructions.
-        self.folders.generators = "build/generators"
-
-    generators = "CMakeDeps"
+        self.folders.generators = 'build/generators'

+    generators = 'CMakeDeps'
    def generate(self):
        tc = CMakeToolchain(self)
-        tc.variables["tests"] = self.options.tests
-        tc.variables["assert"] = self.options.assertions
-        tc.variables["coverage"] = self.options.coverage
-        tc.variables["jemalloc"] = self.options.jemalloc
-        tc.variables["rocksdb"] = self.options.rocksdb
-        tc.variables["BUILD_SHARED_LIBS"] = self.options.shared
-        tc.variables["static"] = self.options.static
-        tc.variables["unity"] = self.options.unity
-        tc.variables["xrpld"] = self.options.xrpld
+        tc.variables['tests'] = self.options.tests
+        tc.variables['assert'] = self.options.assertions
+        tc.variables['coverage'] = self.options.coverage
+        tc.variables['jemalloc'] = self.options.jemalloc
+        tc.variables['rocksdb'] = self.options.rocksdb
+        tc.variables['BUILD_SHARED_LIBS'] = self.options.shared
+        tc.variables['static'] = self.options.static
+        tc.variables['unity'] = self.options.unity
+        tc.variables['xrpld'] = self.options.xrpld
        tc.generate()

    def build(self):
@@ -170,29 +168,29 @@ class Xrpl(ConanFile):
        cmake.install()

    def package_info(self):
-        libxrpl = self.cpp_info.components["libxrpl"]
+        libxrpl = self.cpp_info.components['libxrpl']
        libxrpl.libs = [
-            "xrpl",
-            "xrpl.libpb",
-            "ed25519",
-            "secp256k1",
+            'xrpl',
+            'xrpl.libpb',
+            'ed25519',
+            'secp256k1',
        ]
        # TODO: Fix the protobufs to include each other relative to
        # `include/`, not `include/ripple/proto/`.
-        libxrpl.includedirs = ["include", "include/ripple/proto"]
+        libxrpl.includedirs = ['include', 'include/ripple/proto']
        libxrpl.requires = [
-            "boost::boost",
-            "date::date",
-            "grpc::grpc++",
-            "libarchive::libarchive",
-            "lz4::lz4",
-            "nudb::nudb",
-            "openssl::crypto",
-            "protobuf::libprotobuf",
-            "soci::soci",
-            "sqlite3::sqlite",
-            "xxhash::xxhash",
-            "zlib::zlib",
+            'boost::boost',
+            'date::date',
+            'grpc::grpc++',
+            'libarchive::libarchive',
+            'lz4::lz4',
+            'nudb::nudb',
+            'openssl::crypto',
+            'protobuf::libprotobuf',
+            'soci::soci',
+            'sqlite3::sqlite',
+            'xxhash::xxhash',
+            'zlib::zlib',
        ]
        if self.options.rocksdb:
-            libxrpl.requires.append("rocksdb::librocksdb")
+            libxrpl.requires.append('rocksdb::librocksdb')
@@ -47,6 +47,5 @@
 #define MEM_OVERLAP -43
 #define TOO_MANY_STATE_MODIFICATIONS -44
 #define TOO_MANY_NAMESPACES -45
-#define TOO_LITTLE_ENTROPY -46
 #define HOOK_ERROR_CODES
 #endif //HOOK_ERROR_CODES
@@ -339,12 +339,6 @@ prepare(
    uint32_t read_ptr,
    uint32_t read_len);

-extern int64_t
-dice(uint32_t sides);
-
-extern int64_t
-util_random(uint32_t write_ptr, uint32_t write_len);
-
 #ifdef __cplusplus
 }
 #endif
@@ -22,29 +22,29 @@ APPLY_HOOK="$SCRIPT_DIR/../include/xrpl/hook/hook_api.macro"
            return s;
        }

-        # Each entry is HOOK_API_DEFINITION(RET, NAME, (PARAMS), AMENDMENT),
-        # possibly spread over several lines. Collect until the parentheses
-        # balance, then split on the first two commas; the parameter tuple
-        # is the first parenthesised group.
-        function emit(s,    i, ret, name, p, q, params) {
-            sub(/^[[:space:]]*HOOK_API_DEFINITION[[:space:]]*\(/, "", s);
-            gsub(/[[:space:]]+/, " ", s);
-            i = index(s, ","); ret = trim(substr(s, 1, i - 1)); s = substr(s, i + 1);
-            i = index(s, ","); name = trim(substr(s, 1, i - 1)); s = substr(s, i + 1);
-            p = index(s, "("); q = index(s, ")");
-            params = trim(substr(s, p + 1, q - p - 1));
-            if (name == "_g")
-                name = "__attribute__((noduplicate)) _g";
-            printf("extern %s %s(%s);\n\n", ret, name, params);
-        }
-
-        /^[[:space:]]*HOOK_API_DEFINITION[[:space:]]*\(/ { buf = ""; collecting = 1; }
-
-        collecting {
-            buf = buf " " $0;
-            if (gsub(/\(/, "(", buf) == gsub(/\)/, ")", buf)) {
-                collecting = 0;
-                emit(buf);
+        {
+            line = $0;
+            
+            # Skip block comments
+            if (line ~ /\/\*/) {
+                next;
+            }
+            
+            # Look for comment lines that start with // and contain function signature
+            if (line ~ /^[[:space:]]*\/\/[[:space:]]*[a-zA-Z_][a-zA-Z0-9_]*[[:space:]]+[a-zA-Z_][a-zA-Z0-9_]*[[:space:]]*\(/) {
+                # Remove leading // and trim
+                sub(/^[[:space:]]*\/\/[[:space:]]*/, "", line);
+                line = trim(line);
+                
+                # Check if function name is "_g" to add attribute
+                if (line ~ /[[:space:]]+_g[[:space:]]*\(/) {
+                    # Insert __attribute__((noduplicate)) before _g
+                    sub(/[[:space:]]+_g/, " __attribute__((noduplicate)) _g", line);
+                }
+                
+                # printf("\n");
+                
+                printf("extern %s\n\n", line);
            }
        }
    ' "$APPLY_HOOK"
@@ -38,7 +38,6 @@
 #define KEYLET_HOOK_DEFINITION 24
 #define KEYLET_HOOK_STATE_DIR 25
 #define KEYLET_CRON 26
-#define KEYLET_MANIFEST 37

 #define COMPARE_EQUAL 1U
 #define COMPARE_LESS 2U
@@ -46,8 +45,8 @@

 #include "error.h"
 #include "extern.h"
-#include "macro.h"
 #include "sfcodes.h"
+#include "macro.h"
 #include "tts.h"

 #include "ls_flags.h"
@@ -22,8 +22,6 @@
 #define sfHookApiVersion ((1U << 16U) + 20U)
 #define sfHookStateScale ((1U << 16U) + 21U)
 #define sfLedgerFixType ((1U << 16U) + 22U)
-#define sfEntropyCount ((1U << 16U) + 99U)
-#define sfEntropyDenominator ((1U << 16U) + 100U)
 #define sfNetworkID ((2U << 16U) + 1U)
 #define sfFlags ((2U << 16U) + 2U)
 #define sfSourceTag ((2U << 16U) + 3U)
@@ -82,7 +80,6 @@
 #define sfRewardTime ((2U << 16U) + 98U)
 #define sfRewardLgrFirst ((2U << 16U) + 99U)
 #define sfRewardLgrLast ((2U << 16U) + 100U)
-#define sfAppLoaderSequence ((2U << 16U) + 101U)
 #define sfIndexNext ((3U << 16U) + 1U)
 #define sfIndexPrevious ((3U << 16U) + 2U)
 #define sfBookNode ((3U << 16U) + 3U)
@@ -155,9 +152,6 @@
 #define sfEscrowID ((5U << 16U) + 35U)
 #define sfURITokenID ((5U << 16U) + 36U)
 #define sfDomainID ((5U << 16U) + 37U)
-#define sfNextRandomDigest ((5U << 16U) + 89U)
-#define sfRandomData ((5U << 16U) + 90U)
-#define sfManifestID ((5U << 16U) + 91U)
 #define sfHookOnOutgoing ((5U << 16U) + 93U)
 #define sfHookOnIncoming ((5U << 16U) + 94U)
 #define sfCron ((5U << 16U) + 95U)
@@ -227,7 +221,7 @@
 #define sfProvider ((7U << 16U) + 30U)
 #define sfMPTokenMetadata ((7U << 16U) + 31U)
 #define sfCredentialType ((7U << 16U) + 32U)
-#define sfAppLoader ((7U << 16U) + 96U)
+#define sfJsonTxBody ((7U << 16U) + 33U)
 #define sfHookName ((7U << 16U) + 97U)
 #define sfRemarkValue ((7U << 16U) + 98U)
 #define sfRemarkName ((7U << 16U) + 99U)
@@ -295,8 +289,6 @@
 #define sfXChainCreateAccountAttestationCollectionElement ((14U << 16U) + 31U)
 #define sfPriceData ((14U << 16U) + 32U)
 #define sfCredential ((14U << 16U) + 33U)
-#define sfRandomDigestEntry ((14U << 16U) + 88U)
-#define sfManifest ((14U << 16U) + 90U)
 #define sfAmountEntry ((14U << 16U) + 91U)
 #define sfMintURIToken ((14U << 16U) + 92U)
 #define sfHookEmission ((14U << 16U) + 93U)
@@ -328,7 +320,6 @@
 #define sfAuthorizeCredentials ((15U << 16U) + 26U)
 #define sfUnauthorizeCredentials ((15U << 16U) + 27U)
 #define sfAcceptedCredentials ((15U << 16U) + 28U)
-#define sfRandomDigests ((15U << 16U) + 91U)
 #define sfAmounts ((15U << 16U) + 92U)
 #define sfHookEmissions ((15U << 16U) + 93U)
 #define sfImportVLKeys ((15U << 16U) + 94U)
@@ -61,8 +61,6 @@
 #define ttNFTOKEN_MODIFY 70
 #define ttPERMISSIONED_DOMAIN_SET 71
 #define ttPERMISSIONED_DOMAIN_DELETE 72
-#define ttENTROPY 89
-#define ttMANIFEST_SET 91
 #define ttCRON 92
 #define ttCRON_SET 93
 #define ttREMARKS_SET 94
@@ -1,33 +1,75 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 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.
+*/
+//==============================================================================
+
 #ifndef RIPPLE_BASICS_COUNTEDOBJECT_H_INCLUDED
 #define RIPPLE_BASICS_COUNTEDOBJECT_H_INCLUDED

 #include <xrpl/beast/type_name.h>
 #include <atomic>
-#include <cstddef>
-#include <iterator>
 #include <string>
 #include <utility>
 #include <vector>

 namespace ripple {

+/** Manages all counted object types. */
 class CountedObjects
 {
 public:
+    static CountedObjects&
+    getInstance() noexcept;
+
+    using Entry = std::pair<std::string, int>;
+    using List = std::vector<Entry>;
+
+    List
+    getCounts(int minimumThreshold) const;
+
+public:
+    /** Implementation for @ref CountedObject.
+
+        @internal
+    */
    class Counter
    {
    public:
-        Counter(std::string name) noexcept;
+        Counter(std::string name) noexcept : name_(std::move(name)), count_(0)
+        {
+            // Insert ourselves at the front of the lock-free linked list
+            CountedObjects& instance = CountedObjects::getInstance();
+            Counter* head;
+
+            do
+            {
+                head = instance.m_head.load();
+                next_ = head;
+            } while (instance.m_head.exchange(this) != head);
+
+            ++instance.m_count;
+        }
+
+        ~Counter() noexcept = default;

        int
        increment() noexcept
        {
-            auto const newCount = ++count_;
-
-            if (auto maxCount = maxCount_.load(); newCount > maxCount)
-                maxCount_.compare_exchange_strong(maxCount, newCount);
-
-            return newCount;
+            return ++count_;
        }

        int
@@ -37,161 +79,78 @@ public:
        }

        int
-        count() const noexcept
+        getCount() const noexcept
        {
            return count_.load();
        }

-        int
-        max() const noexcept
+        Counter*
+        getNext() const noexcept
        {
-            return std::max(count_.load(), maxCount_.load());
+            return next_;
        }

        std::string const&
-        name() const noexcept
+        getName() const noexcept
        {
            return name_;
        }

    private:
-        friend class CountedObjects;
-
-        Counter* next_;
-        std::atomic<std::uint32_t> count_ = 0;
-        std::atomic<std::uint32_t> maxCount_ = 0;
        std::string const name_;
+        std::atomic<int> count_;
+        Counter* next_;
    };

-    class Iterator
-    {
-    public:
-        using value_type = Counter const;
-        using reference = value_type&;
-        using pointer = value_type*;
-        using difference_type = std::ptrdiff_t;
-        using iterator_category = std::forward_iterator_tag;
-
-        explicit Iterator(Counter* c = nullptr) noexcept : current_(c)
-        {
-        }
-
-        reference
-        operator*() const noexcept
-        {
-            return *current_;
-        }
-        pointer
-        operator->() const noexcept
-        {
-            return current_;
-        }
-
-        Iterator&
-        operator++() noexcept
-        {
-            current_ = current_->next_;
-            return *this;
-        }
-
-        Iterator
-        operator++(int) noexcept
-        {
-            auto tmp = *this;
-            ++*this;
-            return tmp;
-        }
-
-        bool
-        operator==(Iterator const&) const noexcept = default;
-
-    private:
-        Counter* current_;
-    };
-
-    using List = std::vector<std::pair<std::string, int>>;
-
-    constexpr CountedObjects() noexcept = default;
-
-    static CountedObjects&
-    getInstance() noexcept;
-
-    /** Returns the name and count of every counter with at least
-        `minimumThreshold` live instances. */
-    List
-    getCounts(int minimumThreshold) const
-    {
-        List ret;
-
-        for (auto c = head_.load(); c != nullptr; c = c->next_)
-            if (c->count() >= minimumThreshold)
-                ret.emplace_back(c->name(), c->count());
-
-        return ret;
-    }
-
-    auto
-    begin() const noexcept
-    {
-        return Iterator{head_.load()};
-    }
-    auto
-    end() const noexcept
-    {
-        return Iterator{};
-    }
-
 private:
-    friend class Counter;
+    CountedObjects() noexcept;
+    ~CountedObjects() noexcept = default;

-    std::atomic<Counter*> head_ = nullptr;
+private:
+    std::atomic<int> m_count;
+    std::atomic<Counter*> m_head;
 };

-inline constinit CountedObjects countedObjects;
-
-inline CountedObjects&
-CountedObjects::getInstance() noexcept
-{
-    return countedObjects;
-}
-
-inline CountedObjects::Counter::Counter(std::string name) noexcept
-    : name_(std::move(name))
-{
-    do
-        next_ = countedObjects.head_.load();
-    while (!countedObjects.head_.compare_exchange_weak(next_, this));
-}
-
 //------------------------------------------------------------------------------

+/** Tracks the number of instances of an object.
+
+    Derived classes have their instances counted automatically. This is used
+    for reporting purposes.
+
+    @ingroup ripple_basics
+*/
 template <class Object>
 class CountedObject
 {
-    static CountedObjects::Counter counter_;
+private:
+    static auto&
+    getCounter() noexcept
+    {
+        static CountedObjects::Counter c{beast::type_name<Object>()};
+        return c;
+    }

 public:
    CountedObject() noexcept
    {
-        counter_.increment();
+        getCounter().increment();
    }
+
    CountedObject(CountedObject const&) noexcept
    {
-        counter_.increment();
+        getCounter().increment();
    }
+
    CountedObject&
    operator=(CountedObject const&) noexcept = default;
+
    ~CountedObject() noexcept
    {
-        counter_.decrement();
+        getCounter().decrement();
    }
 };

-// Instantiation of the static CountedObject<T>::counter_
-template <class Object>
-CountedObjects::Counter CountedObject<Object>::counter_{
-    beast::type_name<Object>()};
-
 }  // namespace ripple

 #endif
@@ -23,66 +23,9 @@
 #include <algorithm>
 #include <cassert>
 #include <cstddef>
-#include <cstdint>
-#include <limits>
-#include <optional>

 namespace ripple {

-/** Add two signed 64-bit integers, returning std::nullopt when the exact
- *  mathematical sum is not representable in std::int64_t.
- */
-[[nodiscard]] constexpr std::optional<std::int64_t>
-checkedAdd(std::int64_t a, std::int64_t b) noexcept
-{
-    using L = std::numeric_limits<std::int64_t>;
-
-    if ((b > 0 && a > L::max() - b) || (b < 0 && a < L::min() - b))
-        return std::nullopt;
-
-    return a + b;
-}
-
-/** Subtract two signed 64-bit integers, returning std::nullopt when the exact
- *  mathematical difference is not representable in std::int64_t.
- */
-[[nodiscard]] constexpr std::optional<std::int64_t>
-checkedSub(std::int64_t a, std::int64_t b) noexcept
-{
-    using L = std::numeric_limits<std::int64_t>;
-
-    if ((b > 0 && a < L::min() + b) || (b < 0 && a > L::max() + b))
-        return std::nullopt;
-
-    return a - b;
-}
-
-namespace detail {
-using i64_limits = std::numeric_limits<std::int64_t>;
-
-static_assert(checkedAdd(0, 0) == 0);
-static_assert(checkedAdd(1, -1) == 0);
-static_assert(checkedAdd(-5, 2) == -3);
-static_assert(!checkedAdd(i64_limits::max(), 1).has_value());
-static_assert(!checkedAdd(i64_limits::min(), -1).has_value());
-static_assert(checkedAdd(i64_limits::max() - 1, 1) == i64_limits::max());
-static_assert(checkedAdd(i64_limits::min(), i64_limits::max()) == -1);
-static_assert(checkedAdd(i64_limits::max(), i64_limits::min()) == -1);
-static_assert(!checkedAdd(i64_limits::max(), i64_limits::max()).has_value());
-static_assert(!checkedAdd(i64_limits::min(), i64_limits::min()).has_value());
-
-static_assert(checkedSub(0, 0) == 0);
-static_assert(checkedSub(1, 1) == 0);
-static_assert(checkedSub(-5, 2) == -7);
-static_assert(checkedSub(-5, -2) == -3);
-static_assert(!checkedSub(i64_limits::min(), 1).has_value());
-static_assert(!checkedSub(i64_limits::max(), -1).has_value());
-static_assert(checkedSub(i64_limits::min() + 1, 1) == i64_limits::min());
-static_assert(checkedSub(-1, i64_limits::max()) == i64_limits::min());
-static_assert(!checkedSub(i64_limits::max(), i64_limits::min()).has_value());
-static_assert(!checkedSub(i64_limits::min(), i64_limits::max()).has_value());
-}  // namespace detail
-
 /** Calculate one number divided by another number in percentage.
 * The result is rounded up to the next integer, and capped in the range [0,100]
 * E.g. calculatePercent(1, 100) = 1 because 1/100 = 0.010000
@@ -1,105 +0,0 @@
-#pragma once
-
-#include <shared_mutex>
-
-// On Linux (glibc), std::shared_mutex wraps pthread_rwlock_t initialised
-// with PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP.  This means a
-// pending exclusive lock() blocks new shared (reader) acquisitions,
-// causing reader starvation when writers contend frequently.
-//
-// On macOS / ARM (libc++), std::shared_mutex is already reader-preferring,
-// so the same code behaves differently across platforms.
-//
-// This header provides ReaderPreferringSharedMutex:
-//   - On Linux it wraps pthread_rwlock_t initialised with
-//     PTHREAD_RWLOCK_PREFER_READER_NP, matching macOS semantics.
-//   - On all other platforms it is a type alias for std::shared_mutex.
-//
-// The interface is identical to std::shared_mutex, so it works with
-// std::shared_lock and std::unique_lock.
-
-#if defined(__linux__)
-
-#include <cerrno>
-#include <pthread.h>
-#include <system_error>
-
-namespace ripple {
-
-class ReaderPreferringSharedMutex
-{
-    pthread_rwlock_t rwlock_;
-
-public:
-    ReaderPreferringSharedMutex()
-    {
-        pthread_rwlockattr_t attr;
-        pthread_rwlockattr_init(&attr);
-        pthread_rwlockattr_setkind_np(&attr, PTHREAD_RWLOCK_PREFER_READER_NP);
-        int rc = pthread_rwlock_init(&rwlock_, &attr);
-        pthread_rwlockattr_destroy(&attr);
-        if (rc != 0)
-            throw std::system_error(
-                rc, std::system_category(), "pthread_rwlock_init");
-    }
-
-    ~ReaderPreferringSharedMutex()
-    {
-        pthread_rwlock_destroy(&rwlock_);
-    }
-
-    ReaderPreferringSharedMutex(ReaderPreferringSharedMutex const&) = delete;
-    ReaderPreferringSharedMutex&
-    operator=(ReaderPreferringSharedMutex const&) = delete;
-
-    // Exclusive (writer) locking
-    void
-    lock()
-    {
-        pthread_rwlock_wrlock(&rwlock_);
-    }
-
-    bool
-    try_lock()
-    {
-        return pthread_rwlock_trywrlock(&rwlock_) == 0;
-    }
-
-    void
-    unlock()
-    {
-        pthread_rwlock_unlock(&rwlock_);
-    }
-
-    // Shared (reader) locking
-    void
-    lock_shared()
-    {
-        pthread_rwlock_rdlock(&rwlock_);
-    }
-
-    bool
-    try_lock_shared()
-    {
-        return pthread_rwlock_tryrdlock(&rwlock_) == 0;
-    }
-
-    void
-    unlock_shared()
-    {
-        pthread_rwlock_unlock(&rwlock_);
-    }
-};
-
-}  // namespace ripple
-
-#else  // !__linux__
-
-namespace ripple {
-
-// macOS, Windows, etc. — std::shared_mutex is already reader-preferring.
-using ReaderPreferringSharedMutex = std::shared_mutex;
-
-}  // namespace ripple
-
-#endif
@@ -22,8 +22,7 @@

 #include <xrpl/basics/Resolver.h>
 #include <xrpl/beast/utility/Journal.h>
-
-#include <boost/asio/io_context.hpp>
+#include <boost/asio/io_service.hpp>

 namespace ripple {

@@ -33,7 +32,7 @@ public:
    explicit ResolverAsio() = default;

    static std::unique_ptr<ResolverAsio>
-    New(boost::asio::io_context&, beast::Journal);
+    New(boost::asio::io_service&, beast::Journal);
 };

 }  // namespace ripple
@@ -113,7 +113,7 @@ template <>
 inline std::size_t
 extract(SHAMapHash const& key)
 {
-    return extract(key.as_uint256());
+    return *reinterpret_cast<std::size_t const*>(key.as_uint256().data());
 }

 }  // namespace ripple
@@ -21,443 +21,195 @@
 #define RIPPLE_BASICS_SLABALLOCATOR_H_INCLUDED

 #include <xrpl/basics/ByteUtilities.h>
-#include <xrpl/basics/spinlock.h>
+#include <xrpl/beast/type_name.h>
 #include <xrpl/beast/utility/instrumentation.h>

 #include <boost/align.hpp>
-#include <boost/predef/os.h>
+#include <boost/container/static_vector.hpp>
+#include <boost/predef.h>

-#include <array>
+#include <algorithm>
 #include <atomic>
-#include <bit>
+#include <cstdint>
+#include <cstring>
+#include <mutex>
+#include <vector>

-#include <limits>
-#include <new>
-
-#ifdef BOOST_OS_LINUX
+#if BOOST_OS_LINUX
 #include <sys/mman.h>
 #endif

 namespace ripple {
-namespace slab {
-namespace detail {

-/// Alignment for hugepage support.
-inline constexpr std::size_t pageSize = megabytes(std::size_t(2));
-
-/** Allocate a new 2MB-aligned data buffer.
-
-    @param size Size of the buffer to allocate in bytes.
-    @return Pointer to allocated memory, or nullptr on failure.
-
-    @note On Linux, advises the kernel to back the allocation with
-          transparent huge pages if available.
- */
-[[nodiscard, gnu::malloc]] inline std::uint8_t*
-allocateBuffer(std::size_t size) noexcept
+template <typename Type>
+class SlabAllocator
 {
-    auto ptr = reinterpret_cast<std::uint8_t*>(
-        boost::alignment::aligned_alloc(pageSize, size));
+    static_assert(
+        sizeof(Type) >= sizeof(std::uint8_t*),
+        "SlabAllocator: the requested object must be larger than a pointer.");

-#if BOOST_OS_LINUX
-    if (ptr != nullptr) [[likely]]
-        madvise(ptr, size, MADV_HUGEPAGE);
-#endif
+    static_assert(alignof(Type) == 8 || alignof(Type) == 4);

-    return ptr;
-}
-
-/** Deallocate a buffer previously allocated by allocateBuffer.
-
-    @param ptr Pointer to buffer, or nullptr (no-op).
- */
-inline void
-deallocateBuffer(std::uint8_t* ptr) noexcept
-{
-    boost::alignment::aligned_free(ptr);
-}
-
-//------------------------------------------------------------------------------
-
-/** A block of memory metadata for slab allocators.
-
-    Each block manages a single slab buffer and its associated free list.
-    Blocks are linked together to form a list of slabs per allocator.
-
-    @note slab_t instances are intentionally never destroyed or reclaimed
-          once allocated, to support lock-free iteration of lists of slabs
-          without introducing ABA hazards. The data buffer the class holds
-          can be released independently.
- */
-struct slab_t
-{
-    /** A node in the intrusive free list.
-
-        Constructed in-place within free memory blocks. The next pointer
-        is const because nodes are never modified after construction;
-        they are simply constructed anew when reused.
-     */
-    struct item_t
+    /** A block of memory that is owned by a slab allocator */
+    struct SlabBlock
    {
-        item_t* const next;
+        // A mutex to protect the freelist for this block:
+        std::mutex m_;

-        constexpr explicit item_t(item_t* n) noexcept : next(n)
+        // A linked list of appropriately sized free buffers:
+        std::uint8_t* l_ = nullptr;
+
+        // The next memory block
+        SlabBlock* next_;
+
+        // The underlying memory block:
+        std::uint8_t const* const p_ = nullptr;
+
+        // The extent of the underlying memory block:
+        std::size_t const size_;
+
+        SlabBlock(
+            SlabBlock* next,
+            std::uint8_t* data,
+            std::size_t size,
+            std::size_t item)
+            : next_(next), p_(data), size_(size)
        {
-        }
-    };
+            // We don't need to grab the mutex here, since we're the only
+            // ones with access at this moment.

-    // We need this to be trivially destructible so that we do not
-    // have to explicitly invoke the destructor when popping items
-    // from the free list or when deallocating the slab buffer.
-    static_assert(std::is_trivially_destructible_v<item_t>);
-
-    item_t* head_ = nullptr;
-    slab_t* const next_ = nullptr;
-    std::atomic<std::uint8_t*> data_{nullptr};
-    std::atomic<std::uint8_t> lock_{0};
-    std::uint16_t cycles_ = 0;
-    std::uint32_t outstanding_ = 0;
-
-    /** Construct a block that is unlinked. */
-    constexpr slab_t() noexcept = default;
-
-    /** Construct a block with a link to the next block in the chain.
-
-        @param next Pointer to the next block, or nullptr for the tail.
-     */
-    constexpr explicit slab_t(slab_t* next) noexcept : next_(next)
-    {
-    }
-
-    ~slab_t() = default;
-
-    slab_t(slab_t const&) = delete;
-    slab_t&
-    operator=(slab_t const&) = delete;
-    slab_t(slab_t&&) = delete;
-    slab_t&
-    operator=(slab_t&&) = delete;
-
-    /** Attempt to acquire the block's spinlock.
-
-        @return true if lock was acquired, false if already held.
-     */
-    [[nodiscard]] bool
-    try_lock() noexcept
-    {
-        return spin_try_lock(lock_);
-    }
-
-    /** Acquire the block's spinlock, blocking until available. */
-    void
-    lock() noexcept
-    {
-        spin_lock(lock_);
-    }
-
-    /** Release the block's spinlock. */
-    void
-    unlock() noexcept
-    {
-        spin_unlock(lock_);
-    }
-
-    /** Attempt to assign a buffer to this block.
-
-        If the block has no buffer, takes ownership and initializes
-        the free list.
-
-        @param buffer Pointer to the buffer to assign.
-        @param slabSize Size of the buffer in bytes.
-        @param itemSize Size of each item in bytes.
-        @return Pointer to first item if assigned, nullptr if block already
-                has a buffer.
-     */
-    [[nodiscard]] std::uint8_t*
-    try_assign(
-        std::uint8_t* buffer,
-        std::size_t slabSize,
-        std::size_t itemSize) noexcept
-    {
-        std::uint8_t* expected = nullptr;
-
-        if (!data_.compare_exchange_strong(
-                expected, buffer, std::memory_order::acquire))
-            return nullptr;
-
-        spin_lock(lock_);
-
-        head_ = nullptr;
-        outstanding_ = 1;
-
-        auto p = buffer;
-
-        for (std::size_t n = (slabSize / itemSize) - 1; n--; p += itemSize)
-            head_ = std::construct_at(reinterpret_cast<item_t*>(p), head_);
-
-        spin_unlock(lock_);
-
-        return p;
-    }
-
-    /** Attempt to allocate from this block.
-
-        @return Pointer to allocated memory, or nullptr if block is empty.
-     */
-    [[nodiscard]] std::uint8_t*
-    try_allocate() noexcept
-    {
-        spin_lock(lock_);
-
-        auto ret = head_;
-
-        if (ret)
-        {
-            head_ = ret->next;
-            ++outstanding_;
-        }
-
-        spin_unlock(lock_);
-
-        return reinterpret_cast<std::uint8_t*>(ret);
-    }
-
-    /** Attempt to return a pointer to this block.
-
-        @param ptr Pointer to memory block.
-        @param slabSize Size of the slab's data buffer.
-        @param releaseBuffer Callback invoked with a pointer to the block's
-                             buffer so that it can be released.
-        @return true if ptr belonged to this block and was freed,
-                false otherwise.
-     */
-    template <typename ReleaseFunc>
-    [[nodiscard]] bool
-    try_deallocate(
-        std::uint8_t* ptr,
-        std::size_t slabSize,
-        ReleaseFunc&& releaseBuffer) noexcept
-    {
-        auto data = data_.load(std::memory_order::acquire);
-
-        if (!data || ptr < data || ptr >= data + slabSize)
-            return false;
-
-        std::uint8_t* buf = nullptr;
-
-        spin_lock(lock_);
-
-        assert(ptr != nullptr);
-        assert(outstanding_ > 0);
-
-        head_ = std::construct_at(reinterpret_cast<item_t*>(ptr), head_);
-
-        // If this block became empty and it is not the first block, we
-        // release its buffer. The first block (at the tail of the list
-        // with next_ == nullptr) is exempt to keep one block ready.
-        if (--outstanding_ == 0 && next_ != nullptr)
-        {
-            head_ = nullptr;
-            buf = data_.exchange(buf, std::memory_order::relaxed);
-            cycles_ += (cycles_ < std::numeric_limits<std::uint16_t>::max());
-        }
-
-        spin_unlock(lock_);
-
-        if (buf != nullptr)
-            releaseBuffer(buf);
-
-        return true;
-    }
-};
-
-//------------------------------------------------------------------------------
-
-/** Global pool of slab_t objects shared by all slab allocators.
-
-    Provides a fixed-size array of pre-allocated slabs with fallback
-    to heap allocation if exhausted.
- */
-class slab_pool_t
-{
-    std::array<slab_t, 32768> blocks_{};
-    std::atomic<std::size_t> count_{0};
-
-public:
-    constexpr slab_pool_t() = default;
-
-    slab_pool_t(slab_pool_t const&) = delete;
-    slab_pool_t&
-    operator=(slab_pool_t const&) = delete;
-    slab_pool_t(slab_pool_t&&) = delete;
-    slab_pool_t&
-    operator=(slab_pool_t&&) = delete;
-
-    /** Acquire a slab from the pool.
-
-        @param next Pointer to link as the slab's next pointer.
-        @return Pointer to acquired block, or nullptr if allocation failed.
-     */
-    [[nodiscard]] slab_t*
-    acquire(slab_t* next) noexcept
-    {
-        auto idx = count_.load(std::memory_order::relaxed);
-
-        while (idx < blocks_.size())
-        {
-            if (count_.compare_exchange_weak(
-                    idx, idx + 1, std::memory_order::relaxed))
+            while (data + item <= p_ + size_)
            {
-                return std::construct_at(&blocks_[idx], next);
+                // Use memcpy to avoid unaligned UB
+                // (will optimize to equivalent code)
+                std::memcpy(data, &l_, sizeof(std::uint8_t*));
+                l_ = data;
+                data += item;
            }
        }

-        // Pool exhausted (unlikely!) so fall back to heap
-        return new (std::nothrow) slab_t(next);
-    }
-};
-
-/// Single global block pool for all slab allocators.
-inline constinit slab_pool_t globalSlabPool;
-
-}  // namespace detail
-
-//------------------------------------------------------------------------------
-
-/** A slab allocator for fixed-size memory blocks.
-
-    Allocates memory in large slabs (multiples of 2MB) and sub-allocates
-    fixed-size blocks from them. Provides fast allocation with minimal
-    fragmentation for objects of uniform size.
-
-    @tparam Type The type used to determine minimum block size and alignment.
-    @tparam Align Alignment for allocated blocks (must be >= alignof(Type)).
- */
-template <typename Type, std::size_t Align = alignof(Type)>
-    requires(
-        sizeof(Type) >= sizeof(void*) && Align >= alignof(Type) &&
-        std::has_single_bit(Align))
-class sized_allocator_t
-{
-    /// Linked list of slabs for this allocator.
-    std::atomic<detail::slab_t*> slabs_{nullptr};
-
-    /// Cached buffer to avoid thrashing when oscillating around block
-    /// boundaries.
-    std::atomic<std::uint8_t*> cachedBuffer_{nullptr};
-
-    /// Spinlock to serialize the slow allocation path.
-    std::atomic<std::uint8_t> blockLock_{0};
-
-    /// Item size (sizeof(Type) + extra, rounded up for alignment).
-    std::size_t itemSize_;
-
-    /// Size of each slab's data buffer (multiple of 2 MB).
-    std::size_t slabSize_;
-
-    /** Allocate a memory block from the existing slabs.
-
-        Fast path allocation that doesn't acquire the global lock.
-
-        @return Pointer to allocated memory, or nullptr if all slabs are full.
-     */
-    [[nodiscard]] std::uint8_t*
-    fast_allocate() noexcept
-    {
-        for (auto slab = slabs_.load(std::memory_order::acquire); slab;
-             slab = slab->next_)
+        ~SlabBlock()
        {
-            if (auto ret = slab->try_allocate())
-                return ret;
+            // Calling this destructor will release the allocated memory but
+            // will not properly destroy any objects that are constructed in
+            // the block itself.
        }

-        return nullptr;
-    }
+        SlabBlock(SlabBlock const& other) = delete;
+        SlabBlock&
+        operator=(SlabBlock const& other) = delete;

-    /** Allocate a memory block, potentially creating new capacity.
+        SlabBlock(SlabBlock&& other) = delete;
+        SlabBlock&
+        operator=(SlabBlock&& other) = delete;

-        Slow path allocation that may allocate a new buffer or slab.
-        Must be called with blockLock_ held.
+        /** Determines whether the given pointer belongs to this allocator */
+        bool
+        own(std::uint8_t const* p) const noexcept
+        {
+            return (p >= p_) && (p < p_ + size_);
+        }
+
+        std::uint8_t*
+        allocate() noexcept
+        {
+            std::uint8_t* ret;
+
+            {
+                std::lock_guard l(m_);
+
+                ret = l_;
+
+                if (ret)
+                {
+                    // Use memcpy to avoid unaligned UB
+                    // (will optimize to equivalent code)
+                    std::memcpy(&l_, ret, sizeof(std::uint8_t*));
+                }
+            }

-        @return Pointer to allocated memory, or nullptr on failure.
-     */
-    [[nodiscard]] std::uint8_t*
-    slow_allocate() noexcept
-    {
-        if (auto ret = fast_allocate())
            return ret;
-
-        // Use a cached buffer first, if we have one, or allocate memory
-        // from the operating system.
-        auto buf = cachedBuffer_.exchange(nullptr, std::memory_order::acquire);
-
-        if (!buf)
-            buf = detail::allocateBuffer(slabSize_);
-
-        if (!buf) [[unlikely]]
-            return nullptr;
-
-        // Try to give buffer to an existing empty slab
-        for (auto slab = slabs_.load(std::memory_order::acquire); slab;
-             slab = slab->next_)
-        {
-            if (auto ret = slab->try_assign(buf, slabSize_, itemSize_))
-                return ret;
        }

-        // Create new slab from global pool
-        auto* slab = detail::globalSlabPool.acquire(
-            slabs_.load(std::memory_order::relaxed));
+        /** Return an item to this allocator's freelist.

-        if (!slab) [[unlikely]]
+            @param ptr The pointer to the chunk of memory being deallocated.
+
+            @note This is a dangerous, private interface; the item being
+                  returned should belong to this allocator. Debug builds
+                  will check and assert if this is not the case. Release
+                  builds will not.
+         */
+        void
+        deallocate(std::uint8_t* ptr) noexcept
        {
-            detail::deallocateBuffer(buf);
-            return nullptr;
+            XRPL_ASSERT(
+                own(ptr),
+                "ripple::SlabAllocator::SlabBlock::deallocate : own input");
+
+            std::lock_guard l(m_);
+
+            // Use memcpy to avoid unaligned UB
+            // (will optimize to equivalent code)
+            std::memcpy(ptr, &l_, sizeof(std::uint8_t*));
+            l_ = ptr;
        }
+    };

-        auto ret = slab->try_assign(buf, slabSize_, itemSize_);
-        assert(ret);
+private:
+    // A linked list of slabs
+    std::atomic<SlabBlock*> slabs_ = nullptr;

-        // Link the new slab. Since we hold the lock, we can just do a
-        // direct assignment here.
-        slabs_.store(slab, std::memory_order::release);
+    // The alignment requirements of the item we're allocating:
+    std::size_t const itemAlignment_;

-        return ret;
-    }
+    // The size of an item, including the extra bytes requested and
+    // any padding needed for alignment purposes:
+    std::size_t const itemSize_;
+
+    // The size of each individual slab:
+    std::size_t const slabSize_;

 public:
    /** Constructs a slab allocator able to allocate objects of a fixed size

-        @param extra Extra bytes per item beyond sizeof(Type).
-        @param minItems Minimum number of items per slab (rounded up to 2MB).
+        @param count the number of items the slab allocator can allocate; note
+                     that a count of 0 is valid and means that the allocator
+                     is, effectively, disabled. This can be very useful in some
+                     contexts (e.g. when mimimal memory usage is needed) and
+                     allows for graceful failure.
     */
-    constexpr explicit sized_allocator_t(
+    constexpr explicit SlabAllocator(
        std::size_t extra,
-        std::size_t minItems)
-        : itemSize_(boost::alignment::align_up(sizeof(Type) + extra, Align))
-        , slabSize_(boost::alignment::align_up(
-              itemSize_ * minItems,
-              detail::pageSize))
+        std::size_t alloc = 0,
+        std::size_t align = 0)
+        : itemAlignment_(align ? align : alignof(Type))
+        , itemSize_(
+              boost::alignment::align_up(sizeof(Type) + extra, itemAlignment_))
+        , slabSize_(alloc)
    {
+        XRPL_ASSERT(
+            (itemAlignment_ & (itemAlignment_ - 1)) == 0,
+            "ripple::SlabAllocator::SlabAllocator : valid alignment");
    }

-    // Data buffers are intentionally not released. C++ destruction order
-    // does not guarantee that all items allocated from this allocator
-    // have been freed by the time this destructor runs.
-    ~sized_allocator_t() = default;
+    SlabAllocator(SlabAllocator const& other) = delete;
+    SlabAllocator&
+    operator=(SlabAllocator const& other) = delete;

-    sized_allocator_t(sized_allocator_t const&) = delete;
-    sized_allocator_t&
-    operator=(sized_allocator_t const&) = delete;
-    sized_allocator_t(sized_allocator_t&&) = delete;
-    sized_allocator_t&
-    operator=(sized_allocator_t&&) = delete;
+    SlabAllocator(SlabAllocator&& other) = delete;
+    SlabAllocator&
+    operator=(SlabAllocator&& other) = delete;

-    /** Returns the size of memory blocks returned by this allocator.
+    ~SlabAllocator()
+    {
+        // FIXME: We can't destroy the memory blocks we've allocated, because
+        //        we can't be sure that they are not being used. Cleaning the
+        //        shutdown process up could make this possible.
+    }

-        @return Size of each allocated block in bytes.
-     */
-    [[nodiscard]] constexpr std::size_t
+    /** Returns the size of the memory block this allocator returns. */
+    constexpr std::size_t
    size() const noexcept
    {
        return itemSize_;
@@ -465,36 +217,87 @@ public:

    /** Returns a suitably aligned pointer, if one is available.

-        @return Pointer to allocated memory, or nullptr on failure.
-
-        @note The gnu::malloc attribute is an optimization hint that can
-              be leveraged by GCC and Clang.
+        @return a pointer to a block of memory from the allocator, or
+                nullptr if the allocator can't satisfy this request.
     */
-    [[nodiscard, gnu::malloc]] std::uint8_t*
+    std::uint8_t*
    allocate() noexcept
    {
-        // Fast path: try existing slabs
-        auto ret = fast_allocate();
+        auto slab = slabs_.load();

-        if (ret == nullptr)
+        while (slab != nullptr)
        {
-            // Slow path: need new capacity. Grab the lock to serialize access
-            // to this code path because it is expensive. Then re-check in case
-            // another thread added capacity while we waited.
-            spin_lock(blockLock_);
-            ret = slow_allocate();
-            spin_unlock(blockLock_);
+            if (auto ret = slab->allocate())
+                return ret;
+
+            slab = slab->next_;
        }

-        return ret;
+        // No slab can satisfy our request, so we attempt to allocate a new
+        // one here:
+        std::size_t size = slabSize_;
+
+        // We want to allocate the memory at a 2 MiB boundary, to make it
+        // possible to use hugepage mappings on Linux:
+        auto buf =
+            boost::alignment::aligned_alloc(megabytes(std::size_t(2)), size);
+
+        // clang-format off
+        if (!buf) [[unlikely]]
+            return nullptr;
+            // clang-format on
+
+#if BOOST_OS_LINUX
+        // When allocating large blocks, attempt to leverage Linux's
+        // transparent hugepage support. It is unclear and difficult
+        // to accurately determine if doing this impacts performance
+        // enough to justify using platform-specific tricks.
+        if (size >= megabytes(std::size_t(4)))
+            madvise(buf, size, MADV_HUGEPAGE);
+#endif
+
+        // We need to carve out a bit of memory for the slab header
+        // and then align the rest appropriately:
+        auto slabData = reinterpret_cast<void*>(
+            reinterpret_cast<std::uint8_t*>(buf) + sizeof(SlabBlock));
+        auto slabSize = size - sizeof(SlabBlock);
+
+        // This operation is essentially guaranteed not to fail but
+        // let's be careful anyways.
+        if (!boost::alignment::align(
+                itemAlignment_, itemSize_, slabData, slabSize))
+        {
+            boost::alignment::aligned_free(buf);
+            return nullptr;
+        }
+
+        slab = new (buf) SlabBlock(
+            slabs_.load(),
+            reinterpret_cast<std::uint8_t*>(slabData),
+            slabSize,
+            itemSize_);
+
+        // Link the new slab
+        while (!slabs_.compare_exchange_weak(
+            slab->next_,
+            slab,
+            std::memory_order_release,
+            std::memory_order_relaxed))
+        {
+            ;  // Nothing to do
+        }
+
+        return slab->allocate();
    }

    /** Returns the memory block to the allocator.

-        @param ptr Pointer to memory block.
-        @return true if the block belonged to this allocator and was freed.
+        @param ptr A pointer to a memory block.
+        @param size If non-zero, a hint as to the size of the block.
+        @return true if this memory block belonged to the allocator and has
+                     been released; false otherwise.
     */
-    [[nodiscard]] bool
+    bool
    deallocate(std::uint8_t* ptr) noexcept
    {
        XRPL_ASSERT(
@@ -502,135 +305,112 @@ public:
            "ripple::SlabAllocator::SlabAllocator::deallocate : non-null "
            "input");

-        auto release = [this](std::uint8_t* buf) {
-            std::uint8_t* expected = nullptr;
-
-            if (buf != nullptr &&
-                !cachedBuffer_.compare_exchange_strong(
-                    expected, buf, std::memory_order::release))
-                detail::deallocateBuffer(buf);
-        };
-
-        for (auto slab = slabs_.load(std::memory_order::acquire); slab;
-             slab = slab->next_)
+        for (auto slab = slabs_.load(); slab != nullptr; slab = slab->next_)
        {
-            if (slab->try_deallocate(ptr, slabSize_, release))
+            if (slab->own(ptr))
+            {
+                slab->deallocate(ptr);
                return true;
+            }
        }

        return false;
    }
 };

-//------------------------------------------------------------------------------
-
-/** Configuration for a single slab allocator.
-
-    @tparam MinItems Minimum number of items per slab (must be > 0).
-    @tparam Extra Extra bytes per item beyond sizeof(Type).
- */
-template <std::size_t MinItems, std::size_t Extra = 0>
-    requires(MinItems > 0)
-struct config
+/** A collection of slab allocators of various sizes for a given type. */
+template <typename Type>
+class SlabAllocatorSet
 {
-    static constexpr std::size_t minItems = MinItems;
-    static constexpr std::size_t extra = Extra;
-};
+private:
+    // The list of allocators that belong to this set
+    boost::container::static_vector<SlabAllocator<Type>, 64> allocators_;

-/** Concept for valid slab configuration types. */
-template <typename T>
-concept SlabConfig = requires {
-    { T::minItems } -> std::convertible_to<std::size_t>;
-    { T::extra } -> std::convertible_to<std::size_t>;
-    requires T::minItems > 0;
-};
-
-/** Validate slab configurations at compile time.
-
-    Checks that configurations produce strictly increasing sizes after
-    alignment. This catches both unsorted configs and configs that
-    collapse to the same size after alignment.
-
-    @tparam Type The type used to determine base size.
-    @tparam Align Alignment for allocated blocks.
-    @tparam Configs Configuration types to validate.
-    @return true if configurations are valid, false otherwise.
- */
-template <typename Type, std::size_t Align, SlabConfig... Configs>
-consteval bool
-validate_slab_config()
-{
-    constexpr auto align_up = [](std::size_t n, std::size_t a) {
-        return (n + a - 1) & ~(a - 1);
-    };
-
-    constexpr std::array<std::size_t, sizeof...(Configs)> sizes{
-        align_up(sizeof(Type) + Configs::extra, Align)...};
-
-    for (std::size_t i = 1; i < sizes.size(); ++i)
-        if (sizes[i - 1] >= sizes[i])
-            return false;
-
-    return true;
-}
-
-//------------------------------------------------------------------------------
-
-/** A collection of slab allocators for different sizes.
-
-    Manages multiple sized_allocator_t instances, each configured for a
-    different block size. Allocations are routed to the smallest allocator
-    that can satisfy the request.
-
-    @tparam Type The type used to determine minimum block size and alignment.
-    @tparam Align Alignment for allocated blocks (must be >= alignof(Type)).
-    @tparam Configs Configuration types specifying each size class.
- */
-template <typename Type, std::size_t Align, SlabConfig... Configs>
-    requires(
-        sizeof(Type) >= sizeof(void*) && Align >= alignof(Type) &&
-        std::has_single_bit(Align) && sizeof...(Configs) > 0 &&
-        validate_slab_config<Type, Align, Configs...>())
-class aligned_allocator_t
-{
-    std::array<sized_allocator_t<Type, Align>, sizeof...(Configs)> allocators_;
+    std::size_t maxSize_ = 0;

 public:
-    /** Construct an allocator set. */
-    constexpr aligned_allocator_t()
-        : allocators_{sized_allocator_t<Type, Align>(
-              Configs::extra,
-              Configs::minItems)...}
+    class SlabConfig
+    {
+        friend class SlabAllocatorSet;
+
+    private:
+        std::size_t extra;
+        std::size_t alloc;
+        std::size_t align;
+
+    public:
+        constexpr SlabConfig(
+            std::size_t extra_,
+            std::size_t alloc_ = 0,
+            std::size_t align_ = alignof(Type))
+            : extra(extra_), alloc(alloc_), align(align_)
+        {
+        }
+    };
+
+    constexpr SlabAllocatorSet(std::vector<SlabConfig> cfg)
+    {
+        // Ensure that the specified allocators are sorted from smallest to
+        // largest by size:
+        std::sort(
+            std::begin(cfg),
+            std::end(cfg),
+            [](SlabConfig const& a, SlabConfig const& b) {
+                return a.extra < b.extra;
+            });
+
+        // We should never have two slabs of the same size
+        if (std::adjacent_find(
+                std::begin(cfg),
+                std::end(cfg),
+                [](SlabConfig const& a, SlabConfig const& b) {
+                    return a.extra == b.extra;
+                }) != cfg.end())
+        {
+            throw std::runtime_error(
+                "SlabAllocatorSet<" + beast::type_name<Type>() +
+                ">: duplicate slab size");
+        }
+
+        for (auto const& c : cfg)
+        {
+            auto& a = allocators_.emplace_back(c.extra, c.alloc, c.align);
+
+            if (a.size() > maxSize_)
+                maxSize_ = a.size();
+        }
+    }
+
+    SlabAllocatorSet(SlabAllocatorSet const& other) = delete;
+    SlabAllocatorSet&
+    operator=(SlabAllocatorSet const& other) = delete;
+
+    SlabAllocatorSet(SlabAllocatorSet&& other) = delete;
+    SlabAllocatorSet&
+    operator=(SlabAllocatorSet&& other) = delete;
+
+    ~SlabAllocatorSet()
    {
    }

-    ~aligned_allocator_t() = default;
+    /** Returns a suitably aligned pointer, if one is available.

-    aligned_allocator_t(aligned_allocator_t const&) = delete;
-    aligned_allocator_t&
-    operator=(aligned_allocator_t const&) = delete;
-    aligned_allocator_t(aligned_allocator_t&&) = delete;
-    aligned_allocator_t&
-    operator=(aligned_allocator_t&&) = delete;
+        @param extra The number of extra bytes, above and beyond the size of
+                     the object, that should be returned by the allocator.

-    /** Allocate memory for an object with extra bytes.
-
-        @param extra Extra bytes needed beyond sizeof(Type).
-        @return Pointer to memory, or nullptr if no suitable allocator
-                or allocation failed.
-
-        @note The gnu::malloc attribute is an optimization hint that can
-              be leveraged by GCC and Clang.
+        @return a pointer to a block of memory, or nullptr if the allocator
+                can't satisfy this request.
     */
-    [[nodiscard, gnu::malloc]] std::uint8_t*
+    std::uint8_t*
    allocate(std::size_t extra) noexcept
    {
-        auto const size = sizeof(Type) + extra;
-
-        for (auto& a : allocators_)
+        if (auto const size = sizeof(Type) + extra; size <= maxSize_)
        {
-            if (a.size() >= size)
-                return a.allocate();
+            for (auto& a : allocators_)
+            {
+                if (a.size() >= size)
+                    return a.allocate();
+            }
        }

        return nullptr;
@@ -638,10 +418,12 @@ public:

    /** Returns the memory block to the allocator.

-        @param ptr Pointer to memory block.
-        @return true if memory belonged to this set and was freed.
+        @param ptr A pointer to a memory block.
+
+        @return true if this memory block belonged to one of the allocators
+                     in this set and has been released; false otherwise.
     */
-    [[nodiscard]] bool
+    bool
    deallocate(std::uint8_t* ptr) noexcept
    {
        for (auto& a : allocators_)
@@ -649,16 +431,11 @@ public:
            if (a.deallocate(ptr))
                return true;
        }
+
        return false;
    }
 };

-/** Alias for aligned_allocator_t with default alignment. */
-template <typename Type, SlabConfig... Configs>
-using allocator_t = aligned_allocator_t<Type, alignof(Type), Configs...>;
-
-}  // namespace slab
-
 }  // namespace ripple

 #endif  // RIPPLE_BASICS_SLABALLOCATOR_H_INCLUDED
@@ -77,7 +77,7 @@ strUnHex(std::size_t strSize, Iterator begin, Iterator end)

    if (strSize & 1)
    {
-        int c = unxtab[static_cast<unsigned char>(*iter++)];
+        int c = unxtab[*iter++];

        if (c < 0)
            return {};
@@ -87,12 +87,12 @@ strUnHex(std::size_t strSize, Iterator begin, Iterator end)

    while (iter != end)
    {
-        int cHigh = unxtab[static_cast<unsigned char>(*iter++)];
+        int cHigh = unxtab[*iter++];

        if (cHigh < 0)
            return {};

-        int cLow = unxtab[static_cast<unsigned char>(*iter++)];
+        int cLow = unxtab[*iter++];

        if (cLow < 0)
            return {};
@@ -1,60 +0,0 @@
-//------------------------------------------------------------------------------
-/*
-    This file is part of rippled: https://github.com/ripple/rippled
-    Copyright (c) 2025 XRPL Labs
-
-    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.
-*/
-//==============================================================================
-
-#ifndef RIPPLE_BASICS_UTF8_H_INCLUDED
-#define RIPPLE_BASICS_UTF8_H_INCLUDED
-
-#include <xrpl/basics/Slice.h>
-
-namespace ripple {
-
-/** Check that a byte sequence is well-formed UTF-8, excluding the two
-    noncharacters U+FFFE and U+FFFF.
-
-    Rejects:
-      - overlong encodings;
-      - UTF-16 surrogate halves (U+D800..U+DFFF);
-      - scalar values above U+10FFFF, and 0xF5..0xFF lead bytes;
-      - stray continuation bytes;
-      - multi-byte sequences truncated by the end of the buffer;
-      - U+FFFE and U+FFFF (EF BF BE, EF BF BF).
-
-    U+FFFE and U+FFFF are well-formed, but have no use in a URI or a name
-    and exist to be misread: U+FFFE is a byte-swapped BOM, so a client that
-    transcodes to UTF-16/32 and sniffs the byte order can be pushed into
-    decoding the rest of the string with the wrong endianness, and both are
-    commonly used as in-band sentinels. They have always been rejected by
-    URIToken and HookName validation, and this function preserves that.
-
-    This is consensus-critical. For every input the previous decoder could
-    evaluate without reading past the end of the buffer, the result is
-    identical to it. The only difference is that truncated trailing
-    sequences, where the previous decoder read out of bounds, are now always
-    rejected. Any further change to what this accepts needs an amendment.
-
-    @param s The bytes to check.
-
-    @note Total: every byte read is within s.
-*/
-bool
-isValidUTF8(Slice const& s) noexcept;
-
-}  // namespace ripple
-
-#endif
@@ -23,7 +23,6 @@
 #include <xrpl/beast/type_name.h>
 #include <exception>
 #include <string>
-#include <type_traits>
 #include <typeinfo>
 #include <utility>

@@ -53,7 +52,7 @@ Rethrow()
 }

 template <class E, class... Args>
-[[noreturn]] constexpr void
+[[noreturn]] inline void
 Throw(Args&&... args)
 {
    static_assert(
@@ -61,15 +60,10 @@ Throw(Args&&... args)
        "Exception must derive from std::exception.");

    E e(std::forward<Args>(args)...);
-
-    // Skip logging when evaluated at compile time, so that `Throw` can be
-    // called from constexpr/consteval functions.
-    if (!std::is_constant_evaluated())
-        LogThrow(
-            std::string(
-                "Throwing exception of type " + beast::type_name<E>() + ": ") +
-            e.what());
-
+    LogThrow(
+        std::string(
+            "Throwing exception of type " + beast::type_name<E>() + ": ") +
+        e.what());
    throw e;
 }

@@ -20,7 +20,6 @@

 #include <xrpl/beast/utility/instrumentation.h>
 #include <atomic>
-#include <concepts>
 #include <limits>
 #include <type_traits>

@@ -31,7 +30,6 @@
 namespace ripple {

 namespace detail {
-
 /** Inform the processor that we are in a tight spin-wait loop.

    Spinlocks caught in tight loops can result in the processor's pipeline
@@ -54,130 +52,11 @@ spin_pause() noexcept

 }  // namespace detail

-/** Attempt to acquire a spinlock without blocking.
+/** @{ */
+/** Classes to handle arrays of spinlocks packed into a single atomic integer:

-    @tparam T An unsigned integral type.
-    @param lock The atomic variable used as the lock.
-    @return true if the lock was acquired, false if it was already held.
- */
-template <typename T>
-    requires(std::is_unsigned_v<T> && std::atomic<T>::is_always_lock_free)
-[[nodiscard]] bool
-spin_try_lock(std::atomic<T>& lock) noexcept
-{
-    T expected = 0;
-
-    return lock.compare_exchange_strong(
-        expected,
-        std::numeric_limits<T>::max(),
-        std::memory_order::acquire,
-        std::memory_order::relaxed);
-}
-
-/** Acquire a spinlock, blocking until available.
-
-    Uses a TTAS (test-and-test-and-set) pattern to reduce cache coherency
-    traffic during contention.
-
-    @tparam T An unsigned integral type.
-    @param lock The atomic variable used as the lock.
- */
-template <typename T>
-    requires(std::is_unsigned_v<T> && std::atomic<T>::is_always_lock_free)
-void
-spin_lock(std::atomic<T>& lock) noexcept
-{
-    T expected = 0;
-
-    while (!lock.compare_exchange_weak(
-        expected,
-        std::numeric_limits<T>::max(),
-        std::memory_order::acquire,
-        std::memory_order::relaxed))
-    {
-        expected = 0;
-
-        while (lock.load(std::memory_order::relaxed) != 0)
-            detail::spin_pause();
-    }
-}
-
-/** Release a spinlock.
-
-    @tparam T An unsigned integral type.
-    @param lock The atomic variable used as the lock.
- */
-template <typename T>
-    requires(std::is_unsigned_v<T> && std::atomic<T>::is_always_lock_free)
-void
-spin_unlock(std::atomic<T>& lock) noexcept
-{
-    lock.store(0, std::memory_order::release);
-}
-
-//------------------------------------------------------------------------------
-
-/** A Lockable interface to a spinlock implemented on top of an atomic.
-
-    @tparam T An unsigned integral type.
-
-    @note Using `packed_spinlock` and `spinlock` against the same underlying
-          atomic integer can result in `spinlock` not being able to actually
-          acquire the lock during periods of high contention, because of how
-          the two locks operate: `spinlock` will spin trying to grab all the
-          bits at once, whereas any given `packed_spinlock` will only try to
-          grab one bit at a time. Caveat emptor.
-
-    This class meets the requirements of Lockable:
-        https://en.cppreference.com/w/cpp/named_req/Lockable
- */
-template <typename T>
-    requires(std::is_unsigned_v<T> && std::atomic<T>::is_always_lock_free)
-class spinlock
-{
-    std::atomic<T>& lock_;
-
-public:
-    spinlock(spinlock const&) = delete;
-    spinlock&
-    operator=(spinlock const&) = delete;
-
-    /** Construct a spinlock handle.
-
-        @param lock The atomic integer to spin against.
-
-        @note For performance reasons, you should strive to have `lock` be
-              on a cacheline by itself.
-     */
-    explicit spinlock(std::atomic<T>& lock) noexcept : lock_(lock)
-    {
-    }
-
-    [[nodiscard]] bool
-    try_lock() noexcept
-    {
-        return spin_try_lock(lock_);
-    }
-
-    void
-    lock() noexcept
-    {
-        spin_lock(lock_);
-    }
-
-    void
-    unlock() noexcept
-    {
-        spin_unlock(lock_);
-    }
-};
-
-//------------------------------------------------------------------------------
-
-/** A Lockable interface to a packed spinlock implemented on top of an atomic.
-
-    Packed spinlocks offer tremendous space-efficient lock-sharding but
-    they come at a cost.
+    Packed spinlocks allow for tremendously space-efficient lock-sharding
+    but they come at a cost.

    First, the implementation is necessarily low-level and uses advanced
    features like memory ordering and highly platform-specific tricks to
@@ -199,19 +78,26 @@ public:
    that it can, usually, outperform spinlocks.

    @tparam T An unsigned integral type (e.g. std::uint16_t)
+ */
+
+/** A class that grabs a single packed spinlock from an atomic integer.

    This class meets the requirements of Lockable:
        https://en.cppreference.com/w/cpp/named_req/Lockable
 */
-template <typename T>
-    requires(
-        std::is_unsigned_v<T> && std::atomic<T>::is_always_lock_free &&
-        requires(std::atomic<T>& a, T v) {
-            { a.fetch_or(v) } -> std::same_as<T>;
-            { a.fetch_and(v) } -> std::same_as<T>;
-        })
+template <class T>
 class packed_spinlock
 {
+    // clang-format off
+    static_assert(std::is_unsigned_v<T>);
+    static_assert(std::atomic<T>::is_always_lock_free);
+    static_assert(
+        std::is_same_v<decltype(std::declval<std::atomic<T>&>().fetch_or(0)), T> &&
+        std::is_same_v<decltype(std::declval<std::atomic<T>&>().fetch_and(0)), T>,
+        "std::atomic<T>::fetch_and(T) and std::atomic<T>::fetch_and(T) are required by packed_spinlock");
+    // clang-format on
+
+private:
    std::atomic<T>& bits_;
    T const mask_;

@@ -228,7 +114,7 @@ public:
        @note For performance reasons, you should strive to have `lock` be
              on a cacheline by itself.
     */
-    packed_spinlock(std::atomic<T>& lock, int index) noexcept
+    packed_spinlock(std::atomic<T>& lock, int index)
        : bits_(lock), mask_(static_cast<T>(1) << index)
    {
        XRPL_ASSERT(
@@ -237,13 +123,13 @@ public:
    }

    [[nodiscard]] bool
-    try_lock() noexcept
+    try_lock()
    {
-        return (bits_.fetch_or(mask_, std::memory_order::acquire) & mask_) == 0;
+        return (bits_.fetch_or(mask_, std::memory_order_acquire) & mask_) == 0;
    }

    void
-    lock() noexcept
+    lock()
    {
        while (!try_lock())
        {
@@ -251,18 +137,89 @@ public:
            // serves to help reduce cache coherency traffic during times
            // of contention by avoiding writes that would definitely not
            // result in the lock being acquired.
-            while ((bits_.load(std::memory_order::relaxed) & mask_) != 0)
+            while ((bits_.load(std::memory_order_relaxed) & mask_) != 0)
                detail::spin_pause();
        }
    }

    void
-    unlock() noexcept
+    unlock()
    {
-        bits_.fetch_and(~mask_, std::memory_order::release);
+        bits_.fetch_and(~mask_, std::memory_order_release);
    }
 };

+/** A spinlock implemented on top of an atomic integer.
+
+    @note Using `packed_spinlock` and `spinlock` against the same underlying
+          atomic integer can result in `spinlock` not being able to actually
+          acquire the lock during periods of high contention, because of how
+          the two locks operate: `spinlock` will spin trying to grab all the
+          bits at once, whereas any given `packed_spinlock` will only try to
+          grab one bit at a time. Caveat emptor.
+
+    This class meets the requirements of Lockable:
+        https://en.cppreference.com/w/cpp/named_req/Lockable
+ */
+template <class T>
+class spinlock
+{
+    static_assert(std::is_unsigned_v<T>);
+    static_assert(std::atomic<T>::is_always_lock_free);
+
+private:
+    std::atomic<T>& lock_;
+
+public:
+    spinlock(spinlock const&) = delete;
+    spinlock&
+    operator=(spinlock const&) = delete;
+
+    /** Grabs the
+
+        @param lock The atomic integer to spin against.
+
+        @note For performance reasons, you should strive to have `lock` be
+              on a cacheline by itself.
+     */
+    spinlock(std::atomic<T>& lock) : lock_(lock)
+    {
+    }
+
+    [[nodiscard]] bool
+    try_lock()
+    {
+        T expected = 0;
+
+        return lock_.compare_exchange_weak(
+            expected,
+            std::numeric_limits<T>::max(),
+            std::memory_order_acquire,
+            std::memory_order_relaxed);
+    }
+
+    void
+    lock()
+    {
+        while (!try_lock())
+        {
+            // The use of relaxed memory ordering here is intentional and
+            // serves to help reduce cache coherency traffic during times
+            // of contention by avoiding writes that would definitely not
+            // result in the lock being acquired.
+            while (lock_.load(std::memory_order_relaxed) != 0)
+                detail::spin_pause();
+        }
+    }
+
+    void
+    unlock()
+    {
+        lock_.store(0, std::memory_order_release);
+    }
+};
+/** @} */
+
 }  // namespace ripple

 #endif
@@ -22,8 +22,7 @@

 #include <xrpl/beast/utility/instrumentation.h>
 #include <boost/asio/basic_waitable_timer.hpp>
-#include <boost/asio/io_context.hpp>
-#include <boost/asio/post.hpp>
+#include <boost/asio/io_service.hpp>

 #include <chrono>
 #include <condition_variable>
@@ -32,7 +31,7 @@

 namespace beast {

-/** Measures handler latency on an io_context queue. */
+/** Measures handler latency on an io_service queue. */
 template <class Clock>
 class io_latency_probe
 {
@@ -44,12 +43,12 @@ private:
    std::condition_variable_any m_cond;
    std::size_t m_count;
    duration const m_period;
-    boost::asio::io_context& m_ios;
+    boost::asio::io_service& m_ios;
    boost::asio::basic_waitable_timer<std::chrono::steady_clock> m_timer;
    bool m_cancel;

 public:
-    io_latency_probe(duration const& period, boost::asio::io_context& ios)
+    io_latency_probe(duration const& period, boost::asio::io_service& ios)
        : m_count(1)
        , m_period(period)
        , m_ios(ios)
@@ -64,16 +63,16 @@ public:
        cancel(lock, true);
    }

-    /** Return the io_context associated with the latency probe. */
+    /** Return the io_service associated with the latency probe. */
    /** @{ */
-    boost::asio::io_context&
-    get_io_context()
+    boost::asio::io_service&
+    get_io_service()
    {
        return m_ios;
    }

-    boost::asio::io_context const&
-    get_io_context() const
+    boost::asio::io_service const&
+    get_io_service() const
    {
        return m_ios;
    }
@@ -109,10 +108,8 @@ public:
        std::lock_guard lock(m_mutex);
        if (m_cancel)
            throw std::logic_error("io_latency_probe is canceled");
-        boost::asio::post(
-            m_ios,
-            sample_op<Handler>(
-                std::forward<Handler>(handler), Clock::now(), false, this));
+        m_ios.post(sample_op<Handler>(
+            std::forward<Handler>(handler), Clock::now(), false, this));
    }

    /** Initiate continuous i/o latency sampling.
@@ -126,10 +123,8 @@ public:
        std::lock_guard lock(m_mutex);
        if (m_cancel)
            throw std::logic_error("io_latency_probe is canceled");
-        boost::asio::post(
-            m_ios,
-            sample_op<Handler>(
-                std::forward<Handler>(handler), Clock::now(), true, this));
+        m_ios.post(sample_op<Handler>(
+            std::forward<Handler>(handler), Clock::now(), true, this));
    }

 private:
@@ -240,13 +235,12 @@ private:
                    // The latency is too high to maintain the desired
                    // period so don't bother with a timer.
                    //
-                    boost::asio::post(
-                        m_probe->m_ios,
+                    m_probe->m_ios.post(
                        sample_op<Handler>(m_handler, now, m_repeat, m_probe));
                }
                else
                {
-                    m_probe->m_timer.expires_after(when - now);
+                    m_probe->m_timer.expires_from_now(when - now);
                    m_probe->m_timer.async_wait(
                        sample_op<Handler>(m_handler, now, m_repeat, m_probe));
                }
@@ -259,8 +253,7 @@ private:
            if (!m_probe)
                return;
            typename Clock::time_point const now(Clock::now());
-            boost::asio::post(
-                m_probe->m_ios,
+            m_probe->m_ios.post(
                sample_op<Handler>(m_handler, now, m_repeat, m_probe));
        }
    };
@@ -0,0 +1,307 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of Beast: https://github.com/vinniefalco/Beast
+    Copyright 2013, Vinnie Falco <[email protected]>
+
+    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.
+*/
+//==============================================================================
+
+#ifndef BEAST_INTRUSIVE_LOCKFREESTACK_H_INCLUDED
+#define BEAST_INTRUSIVE_LOCKFREESTACK_H_INCLUDED
+
+#include <atomic>
+#include <iterator>
+#include <type_traits>
+
+namespace beast {
+
+//------------------------------------------------------------------------------
+
+template <class Container, bool IsConst>
+class LockFreeStackIterator
+{
+protected:
+    using Node = typename Container::Node;
+    using NodePtr =
+        typename std::conditional<IsConst, Node const*, Node*>::type;
+
+public:
+    using iterator_category = std::forward_iterator_tag;
+    using value_type = typename Container::value_type;
+    using difference_type = typename Container::difference_type;
+    using pointer = typename std::conditional<
+        IsConst,
+        typename Container::const_pointer,
+        typename Container::pointer>::type;
+    using reference = typename std::conditional<
+        IsConst,
+        typename Container::const_reference,
+        typename Container::reference>::type;
+
+    LockFreeStackIterator() : m_node()
+    {
+    }
+
+    LockFreeStackIterator(NodePtr node) : m_node(node)
+    {
+    }
+
+    template <bool OtherIsConst>
+    explicit LockFreeStackIterator(
+        LockFreeStackIterator<Container, OtherIsConst> const& other)
+        : m_node(other.m_node)
+    {
+    }
+
+    LockFreeStackIterator&
+    operator=(NodePtr node)
+    {
+        m_node = node;
+        return static_cast<LockFreeStackIterator&>(*this);
+    }
+
+    LockFreeStackIterator&
+    operator++()
+    {
+        m_node = m_node->m_next.load();
+        return static_cast<LockFreeStackIterator&>(*this);
+    }
+
+    LockFreeStackIterator
+    operator++(int)
+    {
+        LockFreeStackIterator result(*this);
+        m_node = m_node->m_next;
+        return result;
+    }
+
+    NodePtr
+    node() const
+    {
+        return m_node;
+    }
+
+    reference
+    operator*() const
+    {
+        return *this->operator->();
+    }
+
+    pointer
+    operator->() const
+    {
+        return static_cast<pointer>(m_node);
+    }
+
+private:
+    NodePtr m_node;
+};
+
+//------------------------------------------------------------------------------
+
+template <class Container, bool LhsIsConst, bool RhsIsConst>
+bool
+operator==(
+    LockFreeStackIterator<Container, LhsIsConst> const& lhs,
+    LockFreeStackIterator<Container, RhsIsConst> const& rhs)
+{
+    return lhs.node() == rhs.node();
+}
+
+template <class Container, bool LhsIsConst, bool RhsIsConst>
+bool
+operator!=(
+    LockFreeStackIterator<Container, LhsIsConst> const& lhs,
+    LockFreeStackIterator<Container, RhsIsConst> const& rhs)
+{
+    return lhs.node() != rhs.node();
+}
+
+//------------------------------------------------------------------------------
+
+/** Multiple Producer, Multiple Consumer (MPMC) intrusive stack.
+
+    This stack is implemented using the same intrusive interface as List.
+    All mutations are lock-free.
+
+    The caller is responsible for preventing the "ABA" problem:
+        http://en.wikipedia.org/wiki/ABA_problem
+
+    @param Tag  A type name used to distinguish lists and nodes, for
+                putting objects in multiple lists. If this parameter is
+                omitted, the default tag is used.
+*/
+template <class Element, class Tag = void>
+class LockFreeStack
+{
+public:
+    class Node
+    {
+    public:
+        Node() : m_next(nullptr)
+        {
+        }
+
+        explicit Node(Node* next) : m_next(next)
+        {
+        }
+
+        Node(Node const&) = delete;
+        Node&
+        operator=(Node const&) = delete;
+
+    private:
+        friend class LockFreeStack;
+
+        template <class Container, bool IsConst>
+        friend class LockFreeStackIterator;
+
+        std::atomic<Node*> m_next;
+    };
+
+public:
+    using value_type = Element;
+    using pointer = Element*;
+    using reference = Element&;
+    using const_pointer = Element const*;
+    using const_reference = Element const&;
+    using size_type = std::size_t;
+    using difference_type = std::ptrdiff_t;
+    using iterator = LockFreeStackIterator<LockFreeStack<Element, Tag>, false>;
+    using const_iterator =
+        LockFreeStackIterator<LockFreeStack<Element, Tag>, true>;
+
+    LockFreeStack() : m_end(nullptr), m_head(&m_end)
+    {
+    }
+
+    LockFreeStack(LockFreeStack const&) = delete;
+    LockFreeStack&
+    operator=(LockFreeStack const&) = delete;
+
+    /** Returns true if the stack is empty. */
+    bool
+    empty() const
+    {
+        return m_head.load() == &m_end;
+    }
+
+    /** Push a node onto the stack.
+        The caller is responsible for preventing the ABA problem.
+        This operation is lock-free.
+        Thread safety:
+            Safe to call from any thread.
+
+        @param node The node to push.
+
+        @return `true` if the stack was previously empty. If multiple threads
+                are attempting to push, only one will receive `true`.
+    */
+    // VFALCO NOTE Fix this, shouldn't it be a reference like intrusive list?
+    bool
+    push_front(Node* node)
+    {
+        bool first;
+        Node* old_head = m_head.load(std::memory_order_relaxed);
+        do
+        {
+            first = (old_head == &m_end);
+            node->m_next = old_head;
+        } while (!m_head.compare_exchange_strong(
+            old_head,
+            node,
+            std::memory_order_release,
+            std::memory_order_relaxed));
+        return first;
+    }
+
+    /** Pop an element off the stack.
+        The caller is responsible for preventing the ABA problem.
+        This operation is lock-free.
+        Thread safety:
+            Safe to call from any thread.
+
+        @return The element that was popped, or `nullptr` if the stack
+                was empty.
+    */
+    Element*
+    pop_front()
+    {
+        Node* node = m_head.load();
+        Node* new_head;
+        do
+        {
+            if (node == &m_end)
+                return nullptr;
+            new_head = node->m_next.load();
+        } while (!m_head.compare_exchange_strong(
+            node,
+            new_head,
+            std::memory_order_release,
+            std::memory_order_relaxed));
+        return static_cast<Element*>(node);
+    }
+
+    /** Return a forward iterator to the beginning or end of the stack.
+        Undefined behavior results if push_front or pop_front is called
+        while an iteration is in progress.
+        Thread safety:
+            Caller is responsible for synchronization.
+    */
+    /** @{ */
+    iterator
+    begin()
+    {
+        return iterator(m_head.load());
+    }
+
+    iterator
+    end()
+    {
+        return iterator(&m_end);
+    }
+
+    const_iterator
+    begin() const
+    {
+        return const_iterator(m_head.load());
+    }
+
+    const_iterator
+    end() const
+    {
+        return const_iterator(&m_end);
+    }
+
+    const_iterator
+    cbegin() const
+    {
+        return const_iterator(m_head.load());
+    }
+
+    const_iterator
+    cend() const
+    {
+        return const_iterator(&m_end);
+    }
+    /** @} */
+
+private:
+    Node m_end;
+    std::atomic<Node*> m_head;
+};
+
+}  // namespace beast
+
+#endif
@@ -8,12 +8,9 @@
 #ifndef BEAST_TEST_YIELD_TO_HPP
 #define BEAST_TEST_YIELD_TO_HPP

-#include <boost/asio/executor_work_guard.hpp>
-#include <boost/asio/io_context.hpp>
+#include <boost/asio/io_service.hpp>
 #include <boost/asio/spawn.hpp>
 #include <boost/optional.hpp>
-#include <boost/thread/csbl/memory/allocator_arg.hpp>
-
 #include <condition_variable>
 #include <functional>
 #include <mutex>
@@ -32,12 +29,10 @@ namespace test {
 class enable_yield_to
 {
 protected:
-    boost::asio::io_context ios_;
+    boost::asio::io_service ios_;

 private:
-    boost::optional<boost::asio::executor_work_guard<
-        boost::asio::io_context::executor_type>>
-        work_;
+    boost::optional<boost::asio::io_service::work> work_;
    std::vector<std::thread> threads_;
    std::mutex m_;
    std::condition_variable cv_;
@@ -47,8 +42,7 @@ public:
    /// The type of yield context passed to functions.
    using yield_context = boost::asio::yield_context;

-    explicit enable_yield_to(std::size_t concurrency = 1)
-        : work_(boost::asio::make_work_guard(ios_))
+    explicit enable_yield_to(std::size_t concurrency = 1) : work_(ios_)
    {
        threads_.reserve(concurrency);
        while (concurrency--)
@@ -62,9 +56,9 @@ public:
            t.join();
    }

-    /// Return the `io_context` associated with the object
-    boost::asio::io_context&
-    get_io_context()
+    /// Return the `io_service` associated with the object
+    boost::asio::io_service&
+    get_io_service()
    {
        return ios_;
    }
@@ -117,18 +111,13 @@ enable_yield_to::spawn(F0&& f, FN&&... fn)
 {
    boost::asio::spawn(
        ios_,
-        boost::allocator_arg,
-        boost::context::fixedsize_stack(2 * 1024 * 1024),
        [&](yield_context yield) {
            f(yield);
            std::lock_guard lock{m_};
            if (--running_ == 0)
                cv_.notify_all();
        },
-        [](std::exception_ptr e) {
-            if (e)
-                std::rethrow_exception(e);
-        });
+        boost::coroutines::attributes(2 * 1024 * 1024));
    spawn(fn...);
 }

@@ -15,7 +15,6 @@
 #define uint256 std::string
 #define featureHooksUpdate1 "1"
 #define featureHooksUpdate2 "1"
-#define featureRNG "1"
 #define fix20250131 "1"
 #define fixGuardDepth32 "1"
 namespace hook_api {
@@ -314,7 +313,6 @@ enum keylet_code : uint32_t {
    MPTOKEN = 34,
    CREDENTIAL = 35,
    PERMISSIONED_DOMAIN = 36,
-    MANIFEST = 37,
 };
 }

@@ -384,11 +382,9 @@ enum class hook_return_code : int64_t {
    INVALID_KEY = -41,   // user supplied key was not valid
    NOT_A_STRING = -42,  // nul terminator missing from a string argument
    MEM_OVERLAP = -43,   // one or more specified buffers are the same memory
-    TOO_MANY_STATE_MODIFICATIONS = -44,  // more than 256 modified state
+    TOO_MANY_STATE_MODIFICATIONS = -44,  // more than 5000 modified state
                                         // entires in the combined hook chains
-    TOO_MANY_NAMESPACES = -45,
-    TOO_LITTLE_ENTROPY = -46  // featureRNG: no seed for this ledger, or too few
-                              // validators contributed to it
+    TOO_MANY_NAMESPACES = -45
 };

 enum class ExitType : uint8_t {
@@ -401,25 +397,12 @@ enum class ExitType : uint8_t {
 const uint16_t max_state_modifications = 256;
 const uint8_t max_slots = 255;
 const uint8_t max_nonce = 255;
-const uint16_t max_rng_draws = 256;  // featureRNG, per Hook execution
 const uint8_t max_emit = 255;
 const uint8_t max_params = 16;
 const double fee_base_multiplier = 1.1f;

 using APIWhitelist = std::map<std::string, std::vector<uint8_t>>;

-namespace detail {
-template <class T>
-constexpr uint8_t wasmTypeCode = sizeof(T) == 8 ? 0x7EU : 0x7FU;
-
-template <class R, class... Args>
-std::vector<uint8_t>
-wasmSignature(R (*)(Args...))
-{
-    return {wasmTypeCode<R>, wasmTypeCode<Args>...};
-}
-}  // namespace detail
-
 // RH NOTE: Find descriptions of api functions in ./impl/applyHook.cpp and
 // hookapi.h (include for hooks) this is a map of the api name to its return
 // code (vec[0] and its parameters vec[>0]) as wasm type codes
@@ -431,15 +414,25 @@ getImportWhitelist(Rules const& rules)
 #pragma push_macro("HOOK_API_DEFINITION")
 #undef HOOK_API_DEFINITION

+#define int64_t 0x7EU
+#define int32_t 0x7FU
+#define uint32_t 0x7FU
+
+#define HOOK_WRAP_PARAMS(...) __VA_ARGS__
+
 #define HOOK_API_DEFINITION(                                \
    RETURN_TYPE, FUNCTION_NAME, PARAMS_TUPLE, AMENDMENT)    \
    if (AMENDMENT == uint256{} || rules.enabled(AMENDMENT)) \
-        whitelist[#FUNCTION_NAME] =                         \
-            detail::wasmSignature((RETURN_TYPE(*) PARAMS_TUPLE) nullptr);
+        whitelist[#FUNCTION_NAME] = {                       \
+            RETURN_TYPE, HOOK_WRAP_PARAMS PARAMS_TUPLE};

 #include "hook_api.macro"

 #undef HOOK_API_DEFINITION
+#undef HOOK_WRAP_PARAMS
+#undef int64_t
+#undef int32_t
+#undef uint32_t
 #pragma pop_macro("HOOK_API_DEFINITION")

    return whitelist;
@@ -87,7 +87,7 @@ parseSignedLeb128(
        }
        *end_offset = i;
        if (shift < 64 && (b & 0x40U))
-            val |= (~int64_t{0} << shift);
+            val |= (~0 << shift);

        return val;
    }
@@ -1096,11 +1096,7 @@ validateGuards(
            {
                int name_len = parseLeb128(wasm, i, &i);
                CHECK_SHORT_HOOK();
-                // Only compare the name if all four bytes are in bounds. A
-                // name running past the end is rejected as a short hook below
-                // either way, so this does not change which hooks are valid.
-                if (name_len == 4 &&
-                    static_cast<std::size_t>(i) + 4 <= wasm.size())
+                if (name_len == 4)
                {
                    if (wasm[i] == 'h' && wasm[i + 1] == 'o' &&
                        wasm[i + 2] == 'o' && wasm[i + 3] == 'k')
@@ -244,13 +244,7 @@
                               << "Tried to accept/rollback but specified "    \
                                  "memory outside of the wasm instance "       \
                               << "limit when specifying a reason string";     \
-                if (!view.rules().enabled(fix20260929))                        \
-                    return OUT_OF_BOUNDS;                                      \
-                /* fix20260929: terminate as a rollback so the                 \
-                   failure is visible in HookExecution metadata */             \
-                hookCtx.result.exitType = hook_api::ExitType::ROLLBACK;        \
-                hookCtx.result.exitCode = (int64_t)OUT_OF_BOUNDS;              \
-                return RC_ROLLBACK;                                            \
+                return OUT_OF_BOUNDS;                                          \
            }                                                                  \
            /* assembly script and some other languages use utf16 for strings  \
             */                                                                \
@@ -1,31 +1,523 @@
+
 #ifndef HOOKMISC_INCLUDED
 #define HOOKMISC_INCLUDED 1
-
 #include <xrpl/basics/base_uint.h>
-
-#include <array>
-#include <cstdint>
-
 namespace ripple {
+// RH TODO: there's definitely a mucher nicer way to do this, but it involves
+// modifying the base_uint class and we don't want to do that yet.

-/** UINT256_BIT[i] is the 256-bit value with only bit i set (LSB is bit 0).
-
-    Used to encode and test the per-transaction-type bits of the HookOn and
-    HookCanEmit fields. Built at compile time.
- */
-inline constexpr auto UINT256_BIT = []() consteval {
-    std::array<ripple::uint256, 256> table{};
-
-    for (int i = 0; i < 256; ++i)
-    {
-        std::array<std::uint8_t, 32> bytes{};
-        bytes[31 - (i / 8)] = 1 << (i % 8);
-        table[i] = ripple::uint256(bytes);
-    }
-
-    return table;
-}();
-
+static const std::array<ripple::uint256, 256> UINT256_BIT = {
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000001"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000002"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000004"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000008"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000010"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000020"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000040"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000080"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000100"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000200"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000400"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000000800"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000001000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000002000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000004000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000008000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000010000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000020000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000040000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000080000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000100000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000200000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000400000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000000800000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000001000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000002000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000004000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000008000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000010000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000020000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000040000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000080000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000100000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000200000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000400000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000000800000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000001000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000002000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000004000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000008000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000010000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000020000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000040000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000080000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000100000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000200000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000400000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000000800000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000001000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000002000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000004000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000008000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000010000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000020000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000040000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000080000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000100000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000200000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000400000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000000800000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000001000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000002000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000004000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000008000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000010000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000020000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000040000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000080000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000100000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000200000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000400000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000000800000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000001000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000002000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000004000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000008000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000010000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000020000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000040000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000080000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000100000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000200000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000400000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000000800000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000001000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000002000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000004000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000008000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000010000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000020000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000040000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000080000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000100000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000200000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000400000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000000800000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000001000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000002000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000004000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000008000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000010000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000020000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000040000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000080000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000100000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000200000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000400000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000000800000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000001000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000002000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000004000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000008000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000010000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000020000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000040000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000080000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000100000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000200000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000400000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000000800000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000001000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000002000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000004000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000008000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000010000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000020000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000040000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000080000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000100000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000200000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000400000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000000800000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000001000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000002000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000004000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000008000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000010000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000020000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000040000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000080000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000100000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000200000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000400000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000000800000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000001000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000002000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000004000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000008000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000010000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000020000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000040000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000080000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000100000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000200000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000400000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000000800000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000001000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000002000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000004000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000008000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000010000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000020000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000040000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000080000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000100000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000200000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000400000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000000800000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000001000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000002000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000004000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000008000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000010000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000020000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000040000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000080000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000100000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000200000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000400000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000000800000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000001000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000002000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000004000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000008000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000010000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000020000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000040000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000080000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000100000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000200000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000400000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000000800000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000001000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000002000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000004000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000008000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000010000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000020000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000040000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000080000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000100000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000200000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000400000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000000800000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000001000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000002000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000004000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000008000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000010000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000020000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000040000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000080000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000100000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000200000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000400000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000000800000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000001000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000002000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000004000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000008000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000010000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000020000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000040000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000080000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000100000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000200000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000400000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000000800000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000001000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000002000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000004000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000008000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000010000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000020000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000040000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000080000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000100000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000200000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000400000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0000800000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0001000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0002000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0004000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0008000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0010000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0020000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0040000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0080000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0100000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0200000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0400000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "0800000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "1000000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "2000000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "4000000000000000000000000000000000000000000000000000000000000000"),
+    ripple::uint256(
+        "8000000000000000000000000000000000000000000000000000000000000000")};
 }  // namespace ripple
-
 #endif
@@ -1,309 +1,374 @@
-// clang-format off
+// int32_t _g(uint32_t guard_id, uint32_t maxiter);
 HOOK_API_DEFINITION(
-  int32_t, _g, (uint32_t guard_id, uint32_t maxiter),
+  int32_t, _g, (uint32_t, uint32_t),
  uint256{})

+// int64_t accept(uint32_t read_ptr, uint32_t read_len, int64_t error_code);
 HOOK_API_DEFINITION(
-  int64_t, accept, (uint32_t read_ptr, uint32_t read_len, int64_t error_code),
+  int64_t, accept, (uint32_t, uint32_t, int64_t),
  uint256{})

+// int64_t rollback(uint32_t read_ptr, uint32_t read_len, int64_t error_code);
 HOOK_API_DEFINITION(
-  int64_t, rollback, (uint32_t read_ptr, uint32_t read_len, int64_t error_code),
+  int64_t, rollback, (uint32_t, uint32_t, int64_t),
  uint256{})

+// int64_t util_raddr(uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len);
 HOOK_API_DEFINITION(
-  int64_t, util_raddr, (uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len),
+  int64_t, util_raddr, (uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t util_accid(uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len);
 HOOK_API_DEFINITION(
-  int64_t, util_accid, (uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len),
+  int64_t, util_accid, (uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t util_verify(uint32_t dread_ptr, uint32_t dread_len, uint32_t sread_ptr, uint32_t sread_len, uint32_t kread_ptr, uint32_t kread_len);
 HOOK_API_DEFINITION(
-  int64_t, util_verify, (uint32_t dread_ptr, uint32_t dread_len, uint32_t sread_ptr, uint32_t sread_len, uint32_t kread_ptr, uint32_t kread_len),
+  int64_t, util_verify, (uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t util_sha512h(uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len);
 HOOK_API_DEFINITION(
-  int64_t, util_sha512h, (uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len),
+  int64_t, util_sha512h, (uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t util_keylet(uint32_t write_ptr, uint32_t write_len, uint32_t keylet_type, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f);
 HOOK_API_DEFINITION(
-  int64_t, util_keylet, (uint32_t write_ptr, uint32_t write_len, uint32_t keylet_type, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f),
+  int64_t, util_keylet, (uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t sto_validate(uint32_t tread_ptr, uint32_t tread_len);
 HOOK_API_DEFINITION(
-  int64_t, sto_validate, (uint32_t tread_ptr, uint32_t tread_len),
+  int64_t, sto_validate, (uint32_t, uint32_t),
  uint256{})

+// int64_t sto_subfield(uint32_t read_ptr, uint32_t read_len, uint32_t field_id);
 HOOK_API_DEFINITION(
-  int64_t, sto_subfield, (uint32_t read_ptr, uint32_t read_len, uint32_t field_id),
+  int64_t, sto_subfield, (uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t sto_subarray(uint32_t read_ptr, uint32_t read_len, uint32_t array_id);
 HOOK_API_DEFINITION(
-  int64_t, sto_subarray, (uint32_t read_ptr, uint32_t read_len, uint32_t array_id),
+  int64_t, sto_subarray, (uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t sto_emplace(uint32_t write_ptr, uint32_t write_len, uint32_t sread_ptr, uint32_t sread_len, uint32_t fread_ptr, uint32_t fread_len, uint32_t field_id);
 HOOK_API_DEFINITION(
-  int64_t, sto_emplace, (uint32_t write_ptr, uint32_t write_len, uint32_t sread_ptr, uint32_t sread_len, uint32_t fread_ptr, uint32_t fread_len, uint32_t field_id),
+  int64_t, sto_emplace, (uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t sto_erase(uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len, uint32_t field_id);
 HOOK_API_DEFINITION(
-  int64_t, sto_erase, (uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len, uint32_t field_id),
+  int64_t, sto_erase, (uint32_t, uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t etxn_burden();
 HOOK_API_DEFINITION(
  int64_t, etxn_burden, (),
  uint256{})

+// int64_t etxn_details(uint32_t write_ptr, uint32_t write_len);
 HOOK_API_DEFINITION(
-  int64_t, etxn_details, (uint32_t write_ptr, uint32_t write_len),
+  int64_t, etxn_details, (uint32_t, uint32_t),
  uint256{})

+// int64_t etxn_fee_base(uint32_t read_ptr, uint32_t read_len);
 HOOK_API_DEFINITION(
-  int64_t, etxn_fee_base, (uint32_t read_ptr, uint32_t read_len),
+  int64_t, etxn_fee_base, (uint32_t, uint32_t),
  uint256{})

+// int64_t etxn_reserve(uint32_t count);
 HOOK_API_DEFINITION(
-  int64_t, etxn_reserve, (uint32_t count),
+  int64_t, etxn_reserve, (uint32_t),
  uint256{})

+// int64_t etxn_generation();
 HOOK_API_DEFINITION(
  int64_t, etxn_generation, (),
  uint256{})

+// int64_t etxn_nonce(uint32_t write_ptr, uint32_t write_len);
 HOOK_API_DEFINITION(
-  int64_t, etxn_nonce, (uint32_t write_ptr, uint32_t write_len),
+  int64_t, etxn_nonce, (uint32_t, uint32_t),
  uint256{})

+// int64_t emit(uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len);
 HOOK_API_DEFINITION(
-  int64_t, emit, (uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len),
+  int64_t, emit, (uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t float_set(int32_t exponent, int64_t mantissa);
 HOOK_API_DEFINITION(
-  int64_t, float_set, (int32_t exponent, int64_t mantissa),
+  int64_t, float_set, (int32_t, int64_t),
  uint256{})

+// int64_t float_multiply(int64_t float1, int64_t float2);
 HOOK_API_DEFINITION(
-  int64_t, float_multiply, (int64_t float1, int64_t float2),
+  int64_t, float_multiply, (int64_t, int64_t),
  uint256{})

+// int64_t float_mulratio(int64_t float1, uint32_t round_up, uint32_t numerator, uint32_t denominator);
 HOOK_API_DEFINITION(
-  int64_t, float_mulratio, (int64_t float1, uint32_t round_up, uint32_t numerator, uint32_t denominator),
+  int64_t, float_mulratio, (int64_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t float_negate(int64_t float1);
 HOOK_API_DEFINITION(
-  int64_t, float_negate, (int64_t float1),
+  int64_t, float_negate, (int64_t),
  uint256{})

+// int64_t float_compare(int64_t float1, int64_t float2, uint32_t mode);
 HOOK_API_DEFINITION(
-  int64_t, float_compare, (int64_t float1, int64_t float2, uint32_t mode),
+  int64_t, float_compare, (int64_t, int64_t, uint32_t),
  uint256{})

+// int64_t float_sum(int64_t float1, int64_t float2);
 HOOK_API_DEFINITION(
-  int64_t, float_sum, (int64_t float1, int64_t float2),
+  int64_t, float_sum, (int64_t, int64_t),
  uint256{})

+// int64_t float_sto(uint32_t write_ptr, uint32_t write_len, uint32_t cread_ptr, uint32_t cread_len, uint32_t iread_ptr, uint32_t iread_len, int64_t float1, uint32_t field_code);
 HOOK_API_DEFINITION(
-  int64_t, float_sto, (uint32_t write_ptr, uint32_t write_len, uint32_t cread_ptr, uint32_t cread_len, uint32_t iread_ptr, uint32_t iread_len, int64_t float1, uint32_t field_code),
+  int64_t, float_sto, (uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, int64_t, uint32_t),
  uint256{})

+// int64_t float_sto_set(uint32_t read_ptr, uint32_t read_len);
 HOOK_API_DEFINITION(
-  int64_t, float_sto_set, (uint32_t read_ptr, uint32_t read_len),
+  int64_t, float_sto_set, (uint32_t, uint32_t),
  uint256{})

+// int64_t float_invert(int64_t float1);
 HOOK_API_DEFINITION(
-  int64_t, float_invert, (int64_t float1),
+  int64_t, float_invert, (int64_t),
  uint256{})

+// int64_t float_divide(int64_t float1, int64_t float2);
 HOOK_API_DEFINITION(
-  int64_t, float_divide, (int64_t float1, int64_t float2),
+  int64_t, float_divide, (int64_t, int64_t),
  uint256{})

+// int64_t float_one();
 HOOK_API_DEFINITION(
  int64_t, float_one, (),
  uint256{})

+// int64_t float_mantissa(int64_t float1);
 HOOK_API_DEFINITION(
-  int64_t, float_mantissa, (int64_t float1),
+  int64_t, float_mantissa, (int64_t),
  uint256{})

+// int64_t float_sign(int64_t float1);
 HOOK_API_DEFINITION(
-  int64_t, float_sign, (int64_t float1),
+  int64_t, float_sign, (int64_t),
  uint256{})

+// int64_t float_int(int64_t float1, uint32_t decimal_places, uint32_t abs);
 HOOK_API_DEFINITION(
-  int64_t, float_int, (int64_t float1, uint32_t decimal_places, uint32_t abs),
+  int64_t, float_int, (int64_t, uint32_t, uint32_t),
  uint256{})

+// int64_t float_log(int64_t float1);
 HOOK_API_DEFINITION(
-  int64_t, float_log, (int64_t float1),
+  int64_t, float_log, (int64_t),
  uint256{})

+// int64_t float_root(int64_t float1, uint32_t n);
 HOOK_API_DEFINITION(
-  int64_t, float_root, (int64_t float1, uint32_t n),
+  int64_t, float_root, (int64_t, uint32_t),
  uint256{})

+// int64_t fee_base();
 HOOK_API_DEFINITION(
  int64_t, fee_base, (),
  uint256{})

+// int64_t ledger_seq();
 HOOK_API_DEFINITION(
  int64_t, ledger_seq, (),
  uint256{})

+// int64_t ledger_last_time();
 HOOK_API_DEFINITION(
  int64_t, ledger_last_time, (),
  uint256{})

+// int64_t ledger_last_hash(uint32_t write_ptr, uint32_t write_len);
 HOOK_API_DEFINITION(
-  int64_t, ledger_last_hash, (uint32_t write_ptr, uint32_t write_len),
+  int64_t, ledger_last_hash, (uint32_t, uint32_t),
  uint256{})

+// int64_t ledger_nonce(uint32_t write_ptr, uint32_t write_len);
 HOOK_API_DEFINITION(
-  int64_t, ledger_nonce, (uint32_t write_ptr, uint32_t write_len),
+  int64_t, ledger_nonce, (uint32_t, uint32_t),
  uint256{})

+// int64_t ledger_keylet(uint32_t write_ptr, uint32_t write_len, uint32_t lread_ptr, uint32_t lread_len, uint32_t hread_ptr, uint32_t hread_len);
 HOOK_API_DEFINITION(
-  int64_t, ledger_keylet, (uint32_t write_ptr, uint32_t write_len, uint32_t lread_ptr, uint32_t lread_len, uint32_t hread_ptr, uint32_t hread_len),
+  int64_t, ledger_keylet, (uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t hook_account(uint32_t write_ptr, uint32_t write_len);
 HOOK_API_DEFINITION(
-  int64_t, hook_account, (uint32_t write_ptr, uint32_t write_len),
+  int64_t, hook_account, (uint32_t, uint32_t),
  uint256{})

+// int64_t hook_hash(uint32_t write_ptr, uint32_t write_len, int32_t hook_no);
 HOOK_API_DEFINITION(
-  int64_t, hook_hash, (uint32_t write_ptr, uint32_t write_len, int32_t hook_no),
+  int64_t, hook_hash, (uint32_t, uint32_t, int32_t),
  uint256{})

+// int64_t hook_param_set(uint32_t read_ptr, uint32_t read_len, uint32_t kread_ptr, uint32_t kread_len, uint32_t hread_ptr, uint32_t hread_len);
 HOOK_API_DEFINITION(
-  int64_t, hook_param_set, (uint32_t read_ptr, uint32_t read_len, uint32_t kread_ptr, uint32_t kread_len, uint32_t hread_ptr, uint32_t hread_len),
+  int64_t, hook_param_set, (uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t hook_param(uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len);
 HOOK_API_DEFINITION(
-  int64_t, hook_param, (uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len),
+  int64_t, hook_param, (uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t hook_again();
 HOOK_API_DEFINITION(
  int64_t, hook_again, (),
  uint256{})

+// int64_t hook_skip(uint32_t read_ptr, uint32_t read_len, uint32_t flags);
 HOOK_API_DEFINITION(
-  int64_t, hook_skip, (uint32_t read_ptr, uint32_t read_len, uint32_t flags),
+  int64_t, hook_skip, (uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t hook_pos();
 HOOK_API_DEFINITION(
  int64_t, hook_pos, (),
  uint256{})

+// int64_t slot(uint32_t write_ptr, uint32_t write_len, uint32_t slot);
 HOOK_API_DEFINITION(
-  int64_t, slot, (uint32_t write_ptr, uint32_t write_len, uint32_t slot),
+  int64_t, slot, (uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t slot_clear(uint32_t slot);
 HOOK_API_DEFINITION(
-  int64_t, slot_clear, (uint32_t slot),
+  int64_t, slot_clear, (uint32_t),
  uint256{})

+// int64_t slot_count(uint32_t slot);
 HOOK_API_DEFINITION(
-  int64_t, slot_count, (uint32_t slot),
+  int64_t, slot_count, (uint32_t),
  uint256{})

+// int64_t slot_set(uint32_t read_ptr, uint32_t read_len, uint32_t slot);
 HOOK_API_DEFINITION(
-  int64_t, slot_set, (uint32_t read_ptr, uint32_t read_len, uint32_t slot),
+  int64_t, slot_set, (uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t slot_size(uint32_t slot);
 HOOK_API_DEFINITION(
-  int64_t, slot_size, (uint32_t slot),
+  int64_t, slot_size, (uint32_t),
  uint256{})

+// int64_t slot_subarray(uint32_t parent_slot, uint32_t array_id, uint32_t new_slot);
 HOOK_API_DEFINITION(
-  int64_t, slot_subarray, (uint32_t parent_slot, uint32_t array_id, uint32_t new_slot),
+  int64_t, slot_subarray, (uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t slot_subfield(uint32_t parent_slot, uint32_t field_id, uint32_t new_slot);
 HOOK_API_DEFINITION(
-  int64_t, slot_subfield, (uint32_t parent_slot, uint32_t field_id, uint32_t new_slot),
+  int64_t, slot_subfield, (uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t slot_type(uint32_t slot_no, uint32_t flags);
 HOOK_API_DEFINITION(
-  int64_t, slot_type, (uint32_t slot_no, uint32_t flags),
+  int64_t, slot_type, (uint32_t, uint32_t),
  uint256{})

+// int64_t slot_float(uint32_t slot_no);
 HOOK_API_DEFINITION(
-  int64_t, slot_float, (uint32_t slot_no),
+  int64_t, slot_float, (uint32_t),
  uint256{})

+// int64_t state_set(uint32_t read_ptr, uint32_t read_len, uint32_t kread_ptr, uint32_t kread_len);
 HOOK_API_DEFINITION(
-  int64_t, state_set, (uint32_t read_ptr, uint32_t read_len, uint32_t kread_ptr, uint32_t kread_len),
+  int64_t, state_set, (uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t state_foreign_set(uint32_t read_ptr, uint32_t read_len, uint32_t kread_ptr, uint32_t kread_len, uint32_t nread_ptr, uint32_t nread_len, uint32_t aread_ptr, uint32_t aread_len);
 HOOK_API_DEFINITION(
-  int64_t, state_foreign_set, (uint32_t read_ptr, uint32_t read_len, uint32_t kread_ptr, uint32_t kread_len, uint32_t nread_ptr, uint32_t nread_len, uint32_t aread_ptr, uint32_t aread_len),
+  int64_t, state_foreign_set, (uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t state(uint32_t write_ptr, uint32_t write_len, uint32_t kread_ptr, uint32_t kread_len);
 HOOK_API_DEFINITION(
-  int64_t, state, (uint32_t write_ptr, uint32_t write_len, uint32_t kread_ptr, uint32_t kread_len),
+  int64_t, state, (uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t state_foreign(uint32_t write_ptr, uint32_t write_len, uint32_t kread_ptr, uint32_t kread_len, uint32_t nread_ptr, uint32_t nread_len, uint32_t aread_ptr, uint32_t aread_len);
 HOOK_API_DEFINITION(
-  int64_t, state_foreign, (uint32_t write_ptr, uint32_t write_len, uint32_t kread_ptr, uint32_t kread_len, uint32_t nread_ptr, uint32_t nread_len, uint32_t aread_ptr, uint32_t aread_len),
+  int64_t, state_foreign, (uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t trace(uint32_t mread_ptr, uint32_t mread_len, uint32_t dread_ptr, uint32_t dread_len, uint32_t as_hex);
 HOOK_API_DEFINITION(
-  int64_t, trace, (uint32_t mread_ptr, uint32_t mread_len, uint32_t dread_ptr, uint32_t dread_len, uint32_t as_hex),
+  int64_t, trace, (uint32_t, uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t trace_num(uint32_t read_ptr, uint32_t read_len, int64_t number);
 HOOK_API_DEFINITION(
-  int64_t, trace_num, (uint32_t read_ptr, uint32_t read_len, int64_t number),
+  int64_t, trace_num, (uint32_t, uint32_t, int64_t),
  uint256{})

+// int64_t trace_float(uint32_t read_ptr, uint32_t read_len, int64_t float1);
 HOOK_API_DEFINITION(
-  int64_t, trace_float, (uint32_t read_ptr, uint32_t read_len, int64_t float1),
+  int64_t, trace_float, (uint32_t, uint32_t, int64_t),
  uint256{})

+// int64_t otxn_burden();
 HOOK_API_DEFINITION(
  int64_t, otxn_burden, (),
  uint256{})

+// int64_t otxn_field(uint32_t write_ptr, uint32_t write_len, uint32_t field_id);
 HOOK_API_DEFINITION(
-  int64_t, otxn_field, (uint32_t write_ptr, uint32_t write_len, uint32_t field_id),
+  int64_t, otxn_field, (uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t otxn_generation();
 HOOK_API_DEFINITION(
  int64_t, otxn_generation, (),
  uint256{})

+// int64_t otxn_id(uint32_t write_ptr, uint32_t write_len, uint32_t flags);
 HOOK_API_DEFINITION(
-  int64_t, otxn_id, (uint32_t write_ptr, uint32_t write_len, uint32_t flags),
+  int64_t, otxn_id, (uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t otxn_type();
 HOOK_API_DEFINITION(
  int64_t, otxn_type, (),
  uint256{})

+// int64_t otxn_slot(uint32_t slot_no);
 HOOK_API_DEFINITION(
-  int64_t, otxn_slot, (uint32_t slot_no),
+  int64_t, otxn_slot, (uint32_t),
  uint256{})

+// int64_t otxn_param(uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len);
 HOOK_API_DEFINITION(
-  int64_t, otxn_param, (uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len),
+  int64_t, otxn_param, (uint32_t, uint32_t, uint32_t, uint32_t),
  uint256{})

+// int64_t meta_slot(uint32_t slot_no);
 HOOK_API_DEFINITION(
-  int64_t, meta_slot, (uint32_t slot_no),
+  int64_t, meta_slot, (uint32_t),
  uint256{})

+// int64_t xpop_slot(uint32_t slot_no_tx, uint32_t slot_no_meta);
 HOOK_API_DEFINITION(
-  int64_t, xpop_slot, (uint32_t slot_no_tx, uint32_t slot_no_meta),
+  int64_t, xpop_slot, (uint32_t, uint32_t),
  featureHooksUpdate1)

+// int64_t prepare(uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len);
 HOOK_API_DEFINITION(
-  int64_t, prepare, (uint32_t write_ptr, uint32_t write_len, uint32_t read_ptr, uint32_t read_len),
+  int64_t, prepare, (uint32_t, uint32_t, uint32_t, uint32_t),
  featureHooksUpdate2)
-
-HOOK_API_DEFINITION(
-  int64_t, dice, (uint32_t sides),
-  featureRNG)
-
-HOOK_API_DEFINITION(
-  int64_t, util_random, (uint32_t write_ptr, uint32_t write_len),
-  featureRNG)
-// clang-format on
@@ -215,7 +215,7 @@ Reader::parse(Value& root, BufferSequence const& bs)
    std::string s;
    s.reserve(buffer_size(bs));
    for (auto const& b : bs)
-        s.append(static_cast<char const*>(b.data()), buffer_size(b));
+        s.append(buffer_cast<char const*>(b), buffer_size(b));
    return parse(s, root);
 }

@@ -1,66 +0,0 @@
-//------------------------------------------------------------------------------
-/*
-    This file is part of rippled: https://github.com/ripple/rippled
-    Copyright (c) 2025 XRPL Labs
-
-    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.
-*/
-//==============================================================================
-
-#ifndef RIPPLE_PROTOCOL_APPLOADER_H_INCLUDED
-#define RIPPLE_PROTOCOL_APPLOADER_H_INCLUDED
-
-#include <cstddef>
-#include <cstdint>
-
-namespace ripple {
-
-/** Validation of an AppLoader document (sfAppLoader), the bootstrap page of
-    a Progressive Web App served from an account.
-
-    Consensus cannot afford a real HTML parser, so this is a shallow sanity
-    gate and nothing more. A document must be non-empty and at most
-    maxAppLoaderLength bytes; well-formed UTF-8; free of C0 control
-    characters other than TAB, LF, FF and CR, and of DEL; begin, after an
-    optional BOM and whitespace, with an HTML doctype or an <html start tag;
-    and contain an <html start tag followed later by a </html> end tag with
-    nothing but whitespace after the last one. Nothing parses comments,
-    scripts or attributes, and content is not policed.
-
-    Consensus critical: a change to what it accepts needs an amendment.
-*/
-namespace appLoader {
-
-enum class Result : std::uint8_t {
-    ok = 0,
-    empty,
-    tooLarge,
-    badUTF8,
-    badControlChar,
-    noDoctype,        // does not open with a doctype or <html tag
-    noHtmlElement,    // no <html start tag
-    unclosed,         // no </html> end tag after it
-    trailingGarbage,  // non-whitespace after the last </html>
-};
-
-/** Total: every input yields a result. `data` may be null iff size is 0. */
-Result
-validate(std::uint8_t const* data, std::size_t size);
-
-char const*
-to_string(Result r);
-
-}  // namespace appLoader
-}  // namespace ripple
-
-#endif
@@ -24,7 +24,6 @@
 #include <xrpl/basics/Log.h>
 #include <xrpl/basics/StringUtilities.h>
 #include <xrpl/basics/base64.h>
-#include <xrpl/basics/chrono.h>
 #include <xrpl/json/json_reader.h>
 #include <charconv>

@@ -119,9 +118,8 @@ syntaxCheckProof(
        {
            if (!proof["hash"].isString() ||
                proof["hash"].asString().size() != 64 ||
-                !isHex(proof["hash"].asString()) || !proof["key"].isString() ||
+                !proof["key"].isString() ||
                proof["key"].asString().size() != 64 ||
-                !isHex(proof["key"].asString()) ||
                !proof["children"].isObject())
            {
                JLOG(j.warn()) << "XPOP.transaction.proof tree node has wrong "
@@ -134,11 +132,7 @@ syntaxCheckProof(

        for (const auto& branch : proof.getMemberNames())
        {
-            // Upper case only: the txroot computation only looks up "0"-"F",
-            // so any other key would be silently ignored.
-            if (branch.size() != 1 ||
-                branch.find_first_not_of("0123456789ABCDEF") !=
-                    std::string::npos)
+            if (branch.size() != 1 || !isHex(branch))
            {
                JLOG(j.warn())
                    << "XPOP.transaction.proof child node was not 0-F "
@@ -149,9 +143,9 @@ syntaxCheckProof(
            const auto& node = proof[branch];
            if (!node.isObject() || !node["hash"].isString() ||
                node["hash"].asString().size() != 64 ||
-                !isHex(node["hash"].asString()) || !node["key"].isString() ||
+                !node["key"].isString() ||
                node["key"].asString().size() != 64 ||
-                !isHex(node["key"].asString()) || !node["children"].isObject())
+                !node["children"].isObject())
            {
                JLOG(j.warn())
                    << "XPOP.transaction.proof tree node has wrong format";
@@ -471,45 +465,6 @@ getVLInfo(Json::Value const& xpop, beast::Journal const& j)
    return {{sequence, m->masterKey}};
 }

-// <effective, expiration> of the unl blob, effective defaulting to the epoch
-inline std::optional<std::pair<NetClock::time_point, NetClock::time_point>>
-getVLWindow(Json::Value const& xpop, beast::Journal const& j)
-{
-    auto const data =
-        base64_decode(xpop[jss::validation][jss::unl][jss::blob].asString());
-    Json::Reader r;
-    Json::Value parsed;
-    if (!r.parse(data, parsed) || !parsed.isObject())
-    {
-        JLOG(j.warn()) << "Import: unl blob was not a json object (after "
-                          "base64 decoding)";
-        return {};
-    }
-
-    // const, so that operator[] does not insert missing members
-    Json::Value const& list = parsed;
-    auto const time = [&list](Json::StaticString const& field)
-        -> std::optional<NetClock::time_point> {
-        auto const& v = list[field];
-        if (!v.isInt() || v.asInt() < 0)
-            return {};
-        return NetClock::time_point{NetClock::duration{v.asUInt()}};
-    };
-
-    auto const validUntil = time(jss::expiration);
-    auto const validFrom = list.isMember(jss::effective)
-        ? time(jss::effective)
-        : std::optional<NetClock::time_point>{NetClock::time_point{}};
-    if (!validUntil || !validFrom)
-    {
-        JLOG(j.warn()) << "Import: unl blob json (after base64 decoding) "
-                          "had missing or invalid effective/expiration";
-        return {};
-    }
-
-    return {{*validFrom, *validUntil}};
-}
-
 }  // namespace ripple

 #endif
@@ -118,10 +118,6 @@ negativeUNL() noexcept;
 Keylet const&
 UNLReport() noexcept;

-/** The (fixed) index of the featureRNG random number generator object. */
-Keylet const&
-random() noexcept;
-
 /** The beginning of an order book */
 struct book_t
 {
@@ -332,14 +328,6 @@ xChainCreateAccountClaimID(STXChainBridge const& bridge, std::uint64_t seq);
 Keylet
 did(AccountID const& account) noexcept;

-/** An AppLoader belonging to an account.
-
-    There is at most one per account, so the key is derived from the owner's
-    AccountID alone.
-*/
-Keylet
-appLoader(AccountID const& account) noexcept;
-
 Keylet
 oracle(AccountID const& account, std::uint32_t const& documentID) noexcept;

@@ -384,20 +372,6 @@ permissionedDomain(AccountID const& account, std::uint32_t seq) noexcept;

 Keylet
 permissionedDomain(uint256 const& domainID) noexcept;
-
-Keylet
-manifest(PublicKey const& pk) noexcept;
-
-/** The directory listing every master key's ltMANIFEST object.
-
-    One entry per master key, made when its first manifest is published and
-    kept for good: a newer manifest, a revocation included, replaces the object
-    at the same key and keeps its place. The copy at the ephemeral key is not
-    listed; it is named by the master object.
-*/
-Keylet const&
-manifestDir() noexcept;
-
 }  // namespace keylet

 // Everything below is deprecated and should be removed in favor of keylets:
@@ -428,7 +402,7 @@ struct keyletDesc

 // This list should include all of the keylet functions that take a single
 // AccountID parameter.
-std::array<keyletDesc<AccountID const&>, 7> const directAccountKeylets{
+std::array<keyletDesc<AccountID const&>, 6> const directAccountKeylets{
    {{&keylet::account, jss::AccountRoot, false},
     {&keylet::ownerDir, jss::DirectoryNode, true},
     {&keylet::signers, jss::SignerList, true},
@@ -436,8 +410,7 @@ std::array<keyletDesc<AccountID const&>, 7> const directAccountKeylets{
     // test it anyway, since the invariant checks for it.
     {&keylet::nftpage_min, jss::NFTokenPage, true},
     {&keylet::nftpage_max, jss::NFTokenPage, true},
-     {&keylet::did, jss::DID, true},
-     {&keylet::appLoader, jss::AppLoader, true}}};
+     {&keylet::did, jss::DID, true}}};

 MPTID
 makeMptID(std::uint32_t sequence, AccountID const& account);
@@ -0,0 +1,81 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2025 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.
+*/
+//==============================================================================
+
+#ifndef RIPPLE_PROTOCOL_JSONTX_H_INCLUDED
+#define RIPPLE_PROTOCOL_JSONTX_H_INCLUDED
+
+#include <xrpl/basics/Blob.h>
+#include <xrpl/basics/Expected.h>
+#include <xrpl/basics/Slice.h>
+#include <xrpl/basics/base_uint.h>
+#include <xrpl/protocol/STTx.h>
+
+namespace ripple {
+namespace jsonTx {
+
+/** Returns true iff the STObject declares a sfJsonTxBody field.
+
+    Used as a routing predicate: a transaction with this field present
+    is claimed to use the "json-tx" signing scheme and must be validated
+    through jsonTx::checkSignature / checkStructuralEquivalence. An
+    empty body field still counts as "claimed json-tx" so the empty
+    case is reported as a clean failure instead of silently falling
+    back to the classical sig path.
+*/
+[[nodiscard]] bool
+hasBody(STObject const& obj) noexcept;
+
+/** Borrow a Slice over the ASCII body bytes.
+
+    Returns an empty slice if sfJsonTxBody is not present. The slice is
+    valid for as long as the STObject the field belongs to.
+*/
+[[nodiscard]] Slice
+body(STObject const& obj);
+
+/** SHA-512-Half of the body bytes.
+
+    This is the deterministic "ASCII signing digest" used by json-tx:
+    the bytes the client sees as their message are hashed with SHA-512
+    and truncated to 256 bits, the same digest convention rippled uses
+    elsewhere. Returns a zero-valued hash if sfJsonTxBody is absent.
+*/
+[[nodiscard]] uint256
+bodyHash(STObject const& obj);
+
+/** Signature check only: verify sfTxnSignature against the raw bytes of
+    sfJsonTxBody using sfSigningPubKey.
+
+    The classical signing payload is NOT used. This is the json-tx
+    analogue of STTx::checkSingleSign and is intended to be called from
+    the same code path (e.g. STTx::checkSign).
+
+    Precondition: `stx` carries a non-empty sfJsonTxBody.
+*/
+[[nodiscard]] Expected<void, std::string>
+checkSignature(STTx const& stx);
+
+/** Structural-equivalence check: parse sfJsonTxBody as JSON and confirm
+    it serialises to the same canonical binary as the other structural
+    fields of `stx` (excluding sfTxnSignature and sfJsonTxBody).
+
+    This is a local-check style rule -- it should run alongside
+    passesLocalChecks, not inside the signature verification path.
+
+    Precondition: `stx` carries a non-empty sfJsonTxBody.
+*/
+[[nodiscard]] Expected<void, std::string>
+checkStructuralEquivalence(STTx const& stx);
+
+}  // namespace jsonTx
+}  // namespace ripple
+
+#endif
@@ -96,25 +96,6 @@ std::size_t constexpr maxDIDAttestationLength = 256;
 /** The maximum length of a domain */
 std::size_t constexpr maxDomainLength = 256;

-/** The maximum length of an AppLoader document.
-
-    The AppLoader holds the bootstrap document of a Progressive Web App
-    served from an account. It is deliberately capped: the blob lives in a
-    ledger object that carries no owner reserve at all, so the only things
-    standing between it and unbounded ledger growth are this limit and the
-    per-byte transaction fee below.
-*/
-std::size_t constexpr maxAppLoaderLength = 4096;
-
-/** Drops of transaction fee charged per byte of AppLoader document.
-
-    Storage is paid for through the fee rather than through an owner
-    reserve, so that a loader can be published by an account sitting at its
-    reserve floor. The fee is charged on every AccountSet that carries the
-    field, including overwrites.
-*/
-std::uint64_t constexpr appLoaderFeeDropsPerByte = 1;
-
 /** The maximum length of a URI inside a Credential */
 std::size_t constexpr maxCredentialURILength = 256;

@@ -24,7 +24,6 @@
 #include <xrpl/protocol/KeyType.h>
 #include <xrpl/protocol/STExchange.h>
 #include <xrpl/protocol/UintTypes.h>
-#include <xrpl/protocol/detail/KeyBase.h>
 #include <xrpl/protocol/json_get_or_throw.h>
 #include <xrpl/protocol/tokens.h>

@@ -37,26 +36,6 @@

 namespace ripple {

-/** Returns the type of public key.
-
-    @return std::nullopt If the public key does not
-            represent a known type.
-*/
-[[nodiscard]] inline std::optional<KeyType>
-publicKeyType(Slice const& slice)
-{
-    if (slice.size() == 33)
-    {
-        if (slice[0] == 0xED)
-            return KeyType::ed25519;
-
-        if (slice[0] == 0x02 || slice[0] == 0x03)
-            return KeyType::secp256k1;
-    }
-
-    return std::nullopt;
-}
-
 /** A public key.

    Public keys are used in the public-key cryptography
@@ -79,47 +58,77 @@ publicKeyType(Slice const& slice)
    prefix constant 0xED, followed by 32 bytes of
    public key data.
 */
-class PublicKey : public detail::KeyBase<PublicKey, 33>
+class PublicKey
 {
+protected:
+    // All the constructed public keys are valid, non-empty and contain 33
+    // bytes of data.
+    static constexpr std::size_t size_ = 33;
+    std::uint8_t buf_[size_];  // should be large enough
+
+public:
+    using const_iterator = std::uint8_t const*;
+
 public:
    PublicKey() = delete;

-    PublicKey(PublicKey const&) = default;
+    PublicKey(PublicKey const& other);
    PublicKey&
-    operator=(PublicKey const&) = default;
+    operator=(PublicKey const& other);

-    explicit PublicKey(Slice const& slice) noexcept
+    /** Create a public key.
+
+        Preconditions:
+            publicKeyType(slice) != std::nullopt
+    */
+    explicit PublicKey(Slice const& slice);
+
+    std::uint8_t const*
+    data() const noexcept
    {
-        if (slice.size() < buf_.size())
-            LogicError("PublicKey::PublicKey: undersized buffer");
-
-        if (!publicKeyType(slice))
-            LogicError("PublicKey::PublicKey: invalid type");
-
-        std::copy_n(slice.data(), buf_.size(), buf_.data());
+        return buf_;
    }

-    explicit PublicKey(value_t const& data) noexcept
-        : PublicKey(makeSlice(data))
+    std::size_t
+    size() const noexcept
    {
+        return size_;
    }

-    [[nodiscard]] Slice
+    const_iterator
+    begin() const noexcept
+    {
+        return buf_;
+    }
+
+    const_iterator
+    cbegin() const noexcept
+    {
+        return buf_;
+    }
+
+    const_iterator
+    end() const noexcept
+    {
+        return buf_ + size_;
+    }
+
+    const_iterator
+    cend() const noexcept
+    {
+        return buf_ + size_;
+    }
+
+    Slice
    slice() const noexcept
    {
-        return {buf_.data(), buf_.size()};
+        return {buf_, size_};
    }

    operator Slice() const noexcept
    {
        return slice();
    }
-
-    [[nodiscard]] auto
-    operator<=>(PublicKey const& rhs) const
-    {
-        return buf_ <=> rhs.buf_;
-    }
 };

 /** Print the public key to a stream.
@@ -127,6 +136,22 @@ public:
 std::ostream&
 operator<<(std::ostream& os, PublicKey const& pk);

+inline bool
+operator==(PublicKey const& lhs, PublicKey const& rhs)
+{
+    return std::memcmp(lhs.data(), rhs.data(), rhs.size()) == 0;
+}
+
+inline bool
+operator<(PublicKey const& lhs, PublicKey const& rhs)
+{
+    return std::lexicographical_compare(
+        lhs.data(),
+        lhs.data() + lhs.size(),
+        rhs.data(),
+        rhs.data() + rhs.size());
+}
+
 template <class Hasher>
 void
 hash_append(Hasher& h, PublicKey const& pk)
@@ -196,6 +221,22 @@ enum class ECDSACanonicality { canonical, fullyCanonical };
 std::optional<ECDSACanonicality>
 ecdsaCanonicality(Slice const& sig);

+/** Returns the type of public key.
+
+    @return std::nullopt If the public key does not
+            represent a known type.
+*/
+/** @{ */
+[[nodiscard]] std::optional<KeyType>
+publicKeyType(Slice const& slice);
+
+[[nodiscard]] inline std::optional<KeyType>
+publicKeyType(PublicKey const& publicKey)
+{
+    return publicKeyType(publicKey.slice());
+}
+/** @} */
+
 /** Verify a secp256k1 signature on the digest of a message. */
 [[nodiscard]] bool
 verifyDigest(
@@ -25,39 +25,90 @@
 #include <xrpl/protocol/KeyType.h>
 #include <xrpl/protocol/PublicKey.h>
 #include <xrpl/protocol/Seed.h>
-#include <xrpl/protocol/detail/KeyBase.h>
 #include <xrpl/protocol/tokens.h>
 #include <array>
+#include <cstring>
 #include <string>

 namespace ripple {

 /** A secret key. */
-class SecretKey : public detail::KeyBase<SecretKey, 32>
+class SecretKey
 {
-public:
-    SecretKey() = delete;
+private:
+    std::uint8_t buf_[32];

+public:
+    using const_iterator = std::uint8_t const*;
+
+    SecretKey() = delete;
    SecretKey(SecretKey const&) = default;
    SecretKey&
    operator=(SecretKey const&) = default;

-    /** Destroy the secret key. This will try to securely erase the buffer. */
    ~SecretKey();

-    SecretKey(Slice const& slice)
-    {
-        if (slice.size() != buf_.size())
-            LogicError("SecretKey::SecretKey: invalid size");
+    SecretKey(std::array<std::uint8_t, 32> const& data);
+    SecretKey(Slice const& slice);

-        std::copy_n(slice.data(), buf_.size(), buf_.data());
+    std::uint8_t const*
+    data() const
+    {
+        return buf_;
    }

-    explicit SecretKey(span_t const& data) noexcept : KeyBase(data)
+    std::size_t
+    size() const
    {
+        return sizeof(buf_);
+    }
+
+    /** Convert the secret key to a hexadecimal string.
+
+        @note The operator<< function is deliberately omitted
+        to avoid accidental exposure of secret key material.
+    */
+    std::string
+    to_string() const;
+
+    const_iterator
+    begin() const noexcept
+    {
+        return buf_;
+    }
+
+    const_iterator
+    cbegin() const noexcept
+    {
+        return buf_;
+    }
+
+    const_iterator
+    end() const noexcept
+    {
+        return buf_ + sizeof(buf_);
+    }
+
+    const_iterator
+    cend() const noexcept
+    {
+        return buf_ + sizeof(buf_);
    }
 };

+inline bool
+operator==(SecretKey const& lhs, SecretKey const& rhs)
+{
+    return lhs.size() == rhs.size() &&
+        std::memcmp(lhs.data(), rhs.data(), rhs.size()) == 0;
+}
+
+inline bool
+operator!=(SecretKey const& lhs, SecretKey const& rhs)
+{
+    return !(lhs == rhs);
+}
+
 //------------------------------------------------------------------------------

 /** Parse a secret key */
@@ -22,37 +22,72 @@

 #include <xrpl/basics/Slice.h>
 #include <xrpl/basics/base_uint.h>
-#include <xrpl/protocol/detail/KeyBase.h>
 #include <xrpl/protocol/tokens.h>
-
-#include <algorithm>
 #include <array>
 #include <optional>

 namespace ripple {

 /** Seeds are used to generate deterministic secret keys. */
-class Seed : public detail::KeyBase<Seed, 16>
+class Seed
 {
+private:
+    std::array<uint8_t, 16> buf_;
+
 public:
+    using const_iterator = std::array<uint8_t, 16>::const_iterator;
+
    Seed() = delete;
+
    Seed(Seed const&) = default;
    Seed&
    operator=(Seed const&) = default;

-    /** Destroy the seed. This will attempt to securely erase the buffer. */
+    /** Destroy the seed.
+        The buffer will first be securely erased.
+    */
    ~Seed();

-    explicit Seed(Slice const& slice)
-    {
-        if (slice.size() != buf_.size())
-            LogicError("Seed::Seed: invalid size");
+    /** Construct a seed */
+    /** @{ */
+    explicit Seed(Slice const& slice);
+    explicit Seed(uint128 const& seed);
+    /** @} */

-        std::copy_n(slice.data(), buf_.size(), buf_.data());
+    std::uint8_t const*
+    data() const
+    {
+        return buf_.data();
    }

-    explicit Seed(span_t seed) noexcept : KeyBase(seed)
+    std::size_t
+    size() const
    {
+        return buf_.size();
+    }
+
+    const_iterator
+    begin() const noexcept
+    {
+        return buf_.begin();
+    }
+
+    const_iterator
+    cbegin() const noexcept
+    {
+        return buf_.cbegin();
+    }
+
+    const_iterator
+    end() const noexcept
+    {
+        return buf_.end();
+    }
+
+    const_iterator
+    cend() const noexcept
+    {
+        return buf_.cend();
    }
 };

@@ -24,14 +24,18 @@
 #include <xrpl/protocol/XRPAmount.h>
 #include <cstdint>
 #include <string>
-#include <string_view>

 namespace ripple {

 // Various protocol and system specific constant globals.

 /* The name of the system. */
-inline constexpr std::string_view systemName = "xahau";
+static inline std::string const&
+systemName()
+{
+    static std::string const name = "xahau";
+    return name;
+}

 /** Configure the native currency. */

@@ -54,7 +58,12 @@ isLegalAmountSigned(XRPAmount const& amount)
 }

 /* The currency code for the native currency. */
-inline constexpr std::string_view systemCurrencyCode = "XAH";
+static inline std::string const&
+systemCurrencyCode()
+{
+    static std::string const code = "XAH";
+    return code;
+}

 /** The XRP ledger network's earliest allowed sequence */
 static constexpr std::uint32_t XRP_LEDGER_EARLIEST_SEQ{1U};
@@ -69,7 +69,6 @@ enum TELcodes : TERUnderlyingType {
    telIMPORT_VL_KEY_NOT_RECOGNISED,
    telCAN_NOT_QUEUE_IMPORT,
    telENV_RPC_FAILED,
-    telMANIFEST_FEE_MISMATCH,
 };

 //------------------------------------------------------------------------------
@@ -195,9 +194,6 @@ enum TEFcodes : TERUnderlyingType {
    tefNONDIR_EMIT,
    tefIMPORT_BLACKHOLED,
    tefINVALID_LEDGER_FIX_TYPE,
-    tefPAST_MANIFEST_SEQ,
-    tefREVOKED_MANIFEST,
-    tefMANIFEST_KEY_IN_USE,
 };

 //------------------------------------------------------------------------------
@@ -152,26 +152,6 @@ public:
        return static_cast<bool>(mHookEmissions);
    }

-    /** featureRNG: the RNG state this transaction's first Hook draw saw.
-        Every value the transaction's Hooks drew is derived from it. */
-    void
-    setRandomData(uint256 const& randomData)
-    {
-        mRandomData = randomData;
-    }
-
-    bool
-    hasRandomData() const
-    {
-        return static_cast<bool>(mRandomData);
-    }
-
-    uint256 const&
-    getRandomData() const
-    {
-        return *mRandomData;
-    }
-
    STAmount
    getDeliveredAmount() const
    {
@@ -196,7 +176,6 @@ private:
    std::optional<STAmount> mDelivered;
    std::optional<STArray> mHookExecutions;
    std::optional<STArray> mHookEmissions;
-    std::optional<uint256> mRandomData;

    STArray mNodes;
 };
@@ -24,166 +24,84 @@
 #include <xrpl/basics/base_uint.h>
 #include <xrpl/beast/utility/Zero.h>
 #include <xrpl/protocol/AccountID.h>
-#include <xrpl/protocol/SystemParameters.h>

 namespace ripple {
-
-using LedgerHash = uint256;
-
-/** Directory is an index into the directory of offer books.
-    The last 64 bits of this are the quality. */
-using Directory = base_uint<256, struct DirectoryTag>;
-
-/** Currency is a hash representing a specific currency. */
-using Currency = base_uint<160, struct CurrencyTag>;
-
-/** NodeID is a 160-bit hash representing one node. */
-using NodeID = base_uint<160, struct NodeIDTag>;
-
-/** A Multi-Purpose Token Issuance ID,
-
-    The ID is the a concatenation of a 32-bit sequence number,
-    in big endian, and a 160-bit account.
-
-    @note This type is, unfortunately, untagged because the authors
-          of the original code used a deserialization APIs that did
-          not support tags. It should be fixed.
- */
-using MPTID = base_uint<192>;
-
 namespace detail {

-// A table mapping which characters we are willing to allow in the ASCII
-// representation of a three-letter currency code.
-inline constexpr auto validIsoChars = []() consteval {
-    std::string_view isoCharSet =
-        "abcdefghijklmnopqrstuvwxyz"
-        "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-        "0123456789"
-        "<>(){}[]|?!@#$%^&*";
-
-    std::array<bool, 256> table{};
-
-    for (unsigned char c : isoCharSet)
-        table[c] = true;
-
-    return table;
-}();
-
-// Determines if the given code is composed entirely of letters valid in
-// ISO 4217 codes.
-[[nodiscard]] inline constexpr bool
-isIsoCode(std::string_view code) noexcept
+class CurrencyTag
 {
-    return std::all_of(code.begin(), code.end(), [](char c) {
-        return validIsoChars[static_cast<unsigned char>(c)];
-    });
-}
+public:
+    explicit CurrencyTag() = default;
+};

-// The location (in bytes) of the 3 digit currency inside a 160-bit value
-inline constexpr std::size_t isoCodeOffset = 12;
+class DirectoryTag
+{
+public:
+    explicit DirectoryTag() = default;
+};

-// The length of an ISO-4217 like code
-inline constexpr std::size_t isoCodeLength = 3;
-
-inline constexpr Currency isoMaskBits = ~Currency(0xFFFFFF0000000000);
-
-// The special currency identifier for the system currency: all-zero
-inline constexpr Currency xrpCurrency{0x0000000000000000};
-
-// The special currency identifier meaning "no currency"
-inline constexpr Currency noCurrency{0x0000000000000001};
-
-// The system currency identifier in "ISO4217 format" which is reserved.
-// We derive this value dynamically from the system currency code.
-inline constexpr Currency badCurrency = []() consteval {
-    if (systemCurrencyCode.size() != isoCodeLength)
-        throw "Incorrect systemCurrencyCode size (must be 3 digits)";
-
-    std::array<std::uint8_t, Currency::bytes> bytes{};
-
-    for (std::size_t i = 0; i < isoCodeLength; ++i)
-        bytes[isoCodeOffset + i] =
-            static_cast<std::uint8_t>(systemCurrencyCode[i]);
-
-    return Currency(bytes);
-}();
-
-// We take advantage of the fact that an ASCII value in the [a-z] range
-// transforms into the equivalent character in the [A-Z] range when you
-// AND it with 0xDF, so we can compare against all possible variants of
-// "XAH" in one go. Every byte outside the ISO code position is kept as-is
-// by the mask, so a currency is only "bad" when those bytes are all zero
-// (i.e. the value is exactly one of the case variants of the code).
-inline constexpr Currency badCurrencyCodeMask =
-    isoMaskBits | Currency{0xDFDFDF0000000000};
+class NodeIDTag
+{
+public:
+    explicit NodeIDTag() = default;
+};

 }  // namespace detail

-/** XRP currency. */
-[[nodiscard]] constexpr Currency const&
-xrpCurrency() noexcept
-{
-    return detail::xrpCurrency;
-}
+/** Directory is an index into the directory of offer books.
+    The last 64 bits of this are the quality. */
+using Directory = base_uint<256, detail::DirectoryTag>;

-[[nodiscard]] constexpr bool
-isXRP(Currency const& c) noexcept
-{
-    return c == detail::xrpCurrency;
-}
+/** Currency is a hash representing a specific currency. */
+using Currency = base_uint<160, detail::CurrencyTag>;
+
+/** NodeID is a 160-bit hash representing one node. */
+using NodeID = base_uint<160, detail::NodeIDTag>;
+
+/** MPTID is a 192-bit value representing MPT Issuance ID,
+ * which is a concatenation of a 32-bit sequence (big endian)
+ * and a 160-bit account */
+using MPTID = base_uint<192>;
+
+/** XRP currency. */
+Currency const&
+xrpCurrency();

 /** A placeholder for empty currencies. */
-[[nodiscard]] constexpr Currency const&
-noCurrency() noexcept
-{
-    return detail::noCurrency;
-}
+Currency const&
+noCurrency();

 /** We deliberately disallow the currency that looks like "XAH" because too
    many people were using it instead of the correct XAH currency. */
-[[nodiscard]] constexpr Currency const&
-badCurrency() noexcept
+Currency const&
+badCurrency();
+
+inline bool
+isXRP(Currency const& c)
 {
-    return detail::badCurrency;
+    return c == beast::zero;
 }

-[[nodiscard]] constexpr bool
-isBadCurrency(Currency const& c) noexcept
+inline bool
+isBadCurrency(Currency const& c)
 {
-    // We take advantage of the fact that an ASCII value in the [a-z] range
-    // transforms into the equivalent character in the [A-Z] range when you
-    // AND it with 0xDF, so we can compare against all possible variants of
-    // the bad currency code in one go:
-    return (c & detail::badCurrencyCodeMask) == badCurrency();
+    static const std::set<Currency> badCurrencies{
+        Currency(0x7861680000000000),  // xah
+        Currency(0x7861480000000000),  // xaH
+        Currency(0x7841680000000000),  // xAh
+        Currency(0x7841480000000000),  // xAH
+        Currency(0x5861680000000000),  // Xah
+        Currency(0x5861480000000000),  // XaH
+        Currency(0x5841680000000000),  // XAh
+        Currency(0x5841480000000000)   // XAH
+    };
+
+    return badCurrencies.find(c) != badCurrencies.end();
 }

-/** Returns "", "XAH", three letter ISO code or the hex representation. */
-[[nodiscard]] inline std::string
-to_string(Currency const& currency)
-{
-    if (currency == xrpCurrency())
-        return std::string{systemCurrencyCode};
-
-    if (currency == noCurrency())
-        return "1";
-
-    if ((currency & detail::isoMaskBits) == beast::zero)
-    {
-        std::string_view const iso(
-            reinterpret_cast<char const*>(currency.data()) +
-                detail::isoCodeOffset,
-            detail::isoCodeLength);
-
-        // Specifying the system currency code using ISO-style representation
-        // is not allowed. Note that the check is case-sensitive; yet another
-        // instance of legacy code smell.
-        if (detail::isIsoCode(iso) && iso != systemCurrencyCode)
-            return std::string{iso};
-    }
-
-    return strHex(currency);
-}
+/** Returns "", "XAH", or three letter ISO code. */
+std::string
+to_string(Currency const& c);

 /** Tries to convert a string to a Currency, returns true on success.

@@ -192,29 +110,8 @@ to_string(Currency const& currency)
          will require very careful checking everywhere and may mean having
          to rewrite some unit test code.
 */
-[[nodiscard]] constexpr bool
-to_currency(Currency& currency, std::string_view code) noexcept
-{
-    if (code.empty() || code == systemCurrencyCode)
-    {
-        currency = xrpCurrency();
-        return true;
-    }
-
-    // Handle ISO-4217-like 3-digit character codes.
-    if (code.size() != detail::isoCodeLength)
-        return currency.parseHex(code);
-
-    if (!detail::isIsoCode(code))
-        return false;
-
-    currency = beast::zero;
-
-    std::copy_n(
-        code.data(), code.size(), currency.begin() + detail::isoCodeOffset);
-
-    return true;
-}
+bool
+to_currency(Currency&, std::string const&);

 /** Tries to convert a string to a Currency, returns noCurrency() on failure.

@@ -222,14 +119,8 @@ to_currency(Currency& currency, std::string_view code) noexcept
          unfortunate; changing this will require very careful checking
          everywhere and may mean having to rewrite some unit test code.
 */
-[[nodiscard]] constexpr Currency
-to_currency(std::string_view code) noexcept
-{
-    if (Currency currency; to_currency(currency, code))
-        return currency;
-
-    return noCurrency();
-}
+Currency
+to_currency(std::string const&);

 inline std::ostream&
 operator<<(std::ostream& os, Currency const& x)
@@ -1,114 +0,0 @@
-//------------------------------------------------------------------------------
-/*
-    This file is part of xahaud: https://github.com/xahau/xahaud
-    Copyright (c) 2026, the Xahaud developers.
-
-    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.
-*/
-//==============================================================================
-
-#ifndef XAHAU_PROTOCOL_KEYBASE_H_INCLUDED
-#define XAHAU_PROTOCOL_KEYBASE_H_INCLUDED
-
-#include <algorithm>
-#include <array>
-#include <cstdint>
-#include <span>
-
-namespace ripple {
-namespace detail {
-
-/** Common base for fixed-size key and seed types.
-
-    This CRTP base provides storage, accessors, and equality comparison
-    for types like seeds and secret/public keys, which wrap a fixed-size
-    byte array. The Derived parameter ensures that unrelated types with
-    the same size do not implicitly interoperate with one another.
-
-    Equality comparison is provided automatically. Derived classes that
-    want to can opt in to ordering by declaring operator<=> as a
-    hidden friend.
-
-    @tparam Derived The concrete type inheriting from this base (CRTP).
-    @tparam N       The size of the underlying byte array.
- */
-template <class Derived, std::size_t N>
-class KeyBase
-{
-public:
-    /** The type we use to store the data. */
-    using value_t = std::array<std::uint8_t, N>;
-
-    /** The span type corresponding to the type we use to store the data. */
-    using span_t = std::span<std::uint8_t, N>;
-
-protected:
-    value_t buf_;
-
-    KeyBase() noexcept = default;
-
-    explicit KeyBase(span_t data) noexcept
-    {
-        std::copy_n(data.data(), N, buf_.data());
-    }
-
-public:
-    [[nodiscard]] std::uint8_t const*
-    data() const
-    {
-        return buf_.data();
-    }
-
-    [[nodiscard]] std::size_t
-    size() const
-    {
-        return buf_.size();
-    }
-
-    [[nodiscard]] auto
-    begin() const noexcept
-    {
-        return buf_.begin();
-    }
-
-    [[nodiscard]] auto
-    cbegin() const noexcept
-    {
-        return buf_.cbegin();
-    }
-
-    [[nodiscard]] auto
-    end() const noexcept
-    {
-        return buf_.end();
-    }
-
-    [[nodiscard]] auto
-    cend() const noexcept
-    {
-        return buf_.cend();
-    }
-
-    [[nodiscard]] friend bool
-    operator==(Derived const& lhs, Derived const& rhs)
-    {
-        // This is not a constant time comparison. This is probably OK
-        // for the xahaud codebase.
-        return lhs.buf_ == rhs.buf_;
-    }
-};
-
-}  // namespace detail
-}  // namespace ripple
-
-#endif
@@ -34,24 +34,18 @@
 // If you add an amendment here, then do not forget to increment `numFeatures`
 // in include/xrpl/protocol/Feature.h.

-XRPL_FEATURE(RNG,                        Supported::yes, VoteBehavior::DefaultNo)
-XRPL_FEATURE(PWALoader,                  Supported::yes, VoteBehavior::DefaultNo)
-XRPL_FIX    (20261005,                   Supported::yes, VoteBehavior::DefaultYes)
-XRPL_FEATURE(EscrowDestinationCancel,    Supported::yes, VoteBehavior::DefaultNo)
-XRPL_FIX    (20260929,                   Supported::yes, VoteBehavior::DefaultYes)
-XRPL_FEATURE(HookOnV2_1,                 Supported::yes, VoteBehavior::DefaultNo)
-XRPL_FEATURE(OnChainManifests,           Supported::yes,  VoteBehavior::DefaultNo)
 XRPL_FIX    (HookMap,                    Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FIX    (GuardDepth32,               Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FEATURE(NamedHooks,                 Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FEATURE(IOURewardClaim,             Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FIX    (IOULockedBalanceInvariant,  Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FIX    (ImportIssuer,               Supported::yes, VoteBehavior::DefaultYes)
+XRPL_FEATURE(JsonTx,                     Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FEATURE(HookAPISerializedType240,   Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FEATURE(PermissionedDomains,        Supported::no,  VoteBehavior::DefaultNo)
 XRPL_FEATURE(DynamicNFT,                 Supported::no,  VoteBehavior::DefaultNo)
 XRPL_FEATURE(Credentials,                Supported::no,  VoteBehavior::DefaultNo)
-XRPL_FEATURE(AMMClawback,                Supported::no,  VoteBehavior::DefaultNo)
+XRPL_FEATURE(AMMClawback,                Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FEATURE(MPTokensV1,                 Supported::no,  VoteBehavior::DefaultNo)
 // InvariantsV1_1 will be changes to Supported::yes when all the
 // invariants expected to be included under it are complete.
@@ -71,8 +65,7 @@ XRPL_FEATURE(XChainBridge,               Supported::no,  VoteBehavior::DefaultNo
 XRPL_FEATURE(AMM,                        Supported::no,  VoteBehavior::DefaultNo)
 XRPL_FIX    (ReducedOffersV1,            Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FEATURE(HooksUpdate2,               Supported::yes, VoteBehavior::DefaultNo)
-// replaced to HookOnV2_1
-XRPL_FEATURE(HookOnV2,                   Supported::no,  VoteBehavior::DefaultNo)
+XRPL_FEATURE(HookOnV2,                   Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FIX    (HookAPI20251128,            Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FIX    (CronStacking,               Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FEATURE(ExtendedHookState,          Supported::yes, VoteBehavior::DefaultNo)
@@ -90,11 +83,14 @@ XRPL_FIX    (ReduceImport,               Supported::yes, VoteBehavior::DefaultYe
 XRPL_FEATURE(Touch,                      Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FEATURE(Remarks,                    Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FIX    (FloatDivide,                Supported::yes, VoteBehavior::DefaultYes)
+XRPL_FIX    (240911,                     Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FIX    (PageCap,                    Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FIX    (240819,                     Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FIX    (NSDelete,                   Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FEATURE(ZeroB2M,                    Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FEATURE(Remit,                      Supported::yes, VoteBehavior::DefaultNo)
+XRPL_FIX    (XahauV2,                    Supported::yes, VoteBehavior::DefaultNo)
+XRPL_FIX    (XahauV1,                    Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FEATURE(HooksUpdate1,               Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FEATURE(XahauGenesis,               Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FEATURE(Import,                     Supported::yes, VoteBehavior::DefaultYes)
@@ -165,9 +161,6 @@ XRPL_FEATURE(CryptoConditionsSuite, Supported::yes, VoteBehavior::Obsolete)
 // pre-amendment code has been removed and the identifiers are deprecated.
 // All known amendments and amendments that may appear in a validated
 // ledger must be registered either here or above with the "active" amendments
-XRPL_RETIRE(fix240911)
-XRPL_RETIRE(fixXahauV2)
-XRPL_RETIRE(fixXahauV1)
 XRPL_RETIRE(MultiSign)
 XRPL_RETIRE(TrustSetAuth)
 XRPL_RETIRE(FeeEscalation)
@@ -22,14 +22,14 @@
 #endif

 #ifndef LEDGER_ENTRY_DUPLICATE
-// The LEDGER_ENTRY_EXPAND macro is needed for Windows
+// The EXPAND macro is needed for Windows
 // https://stackoverflow.com/questions/5134523/msvc-doesnt-expand-va-args-correctly
-#define LEDGER_ENTRY_EXPAND(x) x
+#define EXPAND(x) x

 // The `LEDGER_ENTRY_DUPLICATE macro is needed to avoid JSS conflicts
 // Since some transactions and ledger entries have the same name (like `DepositPreauth`)
 // The compiler won't accept two instances of `JSS(DepositPreauth)`
-#define LEDGER_ENTRY_DUPLICATE(...) LEDGER_ENTRY_EXPAND(LEDGER_ENTRY(__VA_ARGS__))
+#define LEDGER_ENTRY_DUPLICATE(...) EXPAND(LEDGER_ENTRY(__VA_ARGS__))
 #endif

 /**
@@ -142,22 +142,6 @@ LEDGER_ENTRY(ltIMPORT_VLSEQ, 0x0049, ImportVLSequence, import_vlseq, ({
    {sfPreviousTxnLgrSeq,    soeOPTIONAL},
 }))

-/** The bootstrap document of a Progressive Web App (featurePWALoader).
-
-    At most one per account, keyed on the owner alone (keylet::appLoader).
-    It is in no owner directory and takes no reserve: its storage is paid
-    for by a per-byte fee on the AccountSet that writes it, and
-    DeleteAccount erases it explicitly. AppLoaderSequence equals the owner's
-    AccountRoot AppLoaderSequence as of the AccountSet that wrote it.
- */
-LEDGER_ENTRY(ltAPP_LOADER, 0x004c, AppLoader, app_loader, ({
-    {sfOwner,                soeREQUIRED},
-    {sfAppLoader,            soeREQUIRED},
-    {sfAppLoaderSequence,    soeREQUIRED},
-    {sfPreviousTxnID,        soeREQUIRED},
-    {sfPreviousTxnLgrSeq,    soeREQUIRED},
-}))
-
 /** The ledger object which tracks the current negative UNL state.

    \note This is a singleton: only one such object exists in the ledger.
@@ -196,26 +180,6 @@ LEDGER_ENTRY_DUPLICATE(ltUNL_REPORT, 0x0052, UNLReport, unl_report, ({
    {sfPreviousTxnLgrSeq,    soeREQUIRED},
 }))

-/** featureRNG: the consensus random number generator.
-
-    A singleton. sfRandomData is seeded from validator reveals by the
-    ttENTROPY transactions applied at the start of each ledger, and then
-    iterated by every Hook API draw for the rest of that ledger.
-    sfRandomData and sfRandomDigests are never written to metadata, and
-    Hooks cannot load this object.
-
-    \sa keylet::random
- */
-LEDGER_ENTRY(ltRANDOM, 0x526E, Random, random, ({
-    {sfLedgerSequence,       soeREQUIRED},
-    {sfRandomData,           soeREQUIRED},
-    {sfEntropyCount,         soeREQUIRED},
-    {sfEntropyDenominator,   soeREQUIRED},
-    {sfRandomDigests,        soeREQUIRED},
-    {sfPreviousTxnID,        soeREQUIRED},
-    {sfPreviousTxnLgrSeq,    soeREQUIRED},
-}))
-
 /** A ledger object which contains a signer list for an account.

    \sa keylet::signers
@@ -298,8 +262,6 @@ LEDGER_ENTRY(ltACCOUNT_ROOT, 0x0061, AccountRoot, account, ({
    {sfHookStateScale,       soeOPTIONAL},
    {sfCron,                 soeOPTIONAL},
    {sfAMMID,                soeOPTIONAL},
-    {sfAppLoaderSequence,    soeOPTIONAL},
-    {sfManifestID,           soeOPTIONAL},
 }))

 /** A ledger object which contains a list of object identifiers.
@@ -630,27 +592,6 @@ LEDGER_ENTRY(ltDID, 0x008D, DID, did, ({
    {sfPreviousTxnLgrSeq,    soeREQUIRED},
 }))

-LEDGER_ENTRY(ltMANIFEST, 0x004D, Manifest, manifest_entry, ({
-    {sfAccount,             soeREQUIRED},
-    {sfPublicKey,           soeREQUIRED},
-    {sfSigningPubKey,       soeOPTIONAL}, /* may be absent if the master is revoked */
-    {sfSequence,            soeREQUIRED},
-    /* sfVersion defaults to 0 and is omitted from the signed payload when
-       absent. Storing it unconditionally would change the bytes and break
-       signature verification when the manifest is reconstructed. */
-    {sfVersion,             soeOPTIONAL},
-    {sfDomain,              soeOPTIONAL},
-    /* The signatures are mirrored so the object is a lossless copy of the
-       manifest and can be independently verified, and re-served to peers,
-       by any node reading it (see ManifestCache::applyLedger). */
-    {sfMasterSignature,     soeREQUIRED},
-    {sfSignature,           soeOPTIONAL}, /* absent if the master is revoked */
-    {sfManifestID,          soeOPTIONAL}, /* pointer to the identical other copy on the other key */
-    {sfOwnerNode,           soeOPTIONAL}, /* master copy only: its page in keylet::manifestDir() */
-    {sfPreviousTxnID,       soeREQUIRED},
-    {sfPreviousTxnLgrSeq,   soeREQUIRED},
-}))
-
-#undef LEDGER_ENTRY_EXPAND
+#undef EXPAND
 #undef LEDGER_ENTRY_DUPLICATE

@@ -59,8 +59,6 @@ TYPED_SFIELD(sfHookExecutionIndex,       UINT16,    19)
 TYPED_SFIELD(sfHookApiVersion,           UINT16,    20)
 TYPED_SFIELD(sfHookStateScale,           UINT16,    21)
 TYPED_SFIELD(sfLedgerFixType,            UINT16,    22)
-TYPED_SFIELD(sfEntropyCount,             UINT16,    99)
-TYPED_SFIELD(sfEntropyDenominator,       UINT16,   100)

 // 32-bit integers (common)
 TYPED_SFIELD(sfNetworkID,                UINT32,     1)
@@ -125,7 +123,6 @@ TYPED_SFIELD(sfImportSequence,           UINT32,    97)
 TYPED_SFIELD(sfRewardTime,               UINT32,    98)
 TYPED_SFIELD(sfRewardLgrFirst,           UINT32,    99)
 TYPED_SFIELD(sfRewardLgrLast,            UINT32,   100)
-TYPED_SFIELD(sfAppLoaderSequence,        UINT32,   101)

 // 64-bit integers (common)
 TYPED_SFIELD(sfIndexNext,                UINT64,     1)
@@ -213,10 +210,6 @@ TYPED_SFIELD(sfOfferID,                  UINT256,   34)
 TYPED_SFIELD(sfEscrowID,                 UINT256,   35)
 TYPED_SFIELD(sfURITokenID,               UINT256,   36)
 TYPED_SFIELD(sfDomainID,                 UINT256,   37)
-TYPED_SFIELD(sfNextRandomDigest,         UINT256,   89)
-// RNG running state: never written to metadata (see featureRNG)
-TYPED_SFIELD(sfRandomData,               UINT256,   90, SField::sMD_Never)
-TYPED_SFIELD(sfManifestID,               UINT256,   91)
 TYPED_SFIELD(sfHookOnOutgoing,           UINT256,   93)
 TYPED_SFIELD(sfHookOnIncoming,           UINT256,   94)
 TYPED_SFIELD(sfCron,                     UINT256,   95)
@@ -300,7 +293,10 @@ TYPED_SFIELD(sfAssetClass,               VL,        29)
 TYPED_SFIELD(sfProvider,                 VL,        30)
 TYPED_SFIELD(sfMPTokenMetadata,          VL,        31)
 TYPED_SFIELD(sfCredentialType,           VL,        32)
-TYPED_SFIELD(sfAppLoader,                VL,        96)
+// json-tx: the exact ASCII bytes the client signed; authoritative over
+// the classical signing payload when present. Not part of the classical
+// signing-payload computation (the bytes ARE the signing payload).
+TYPED_SFIELD(sfJsonTxBody,               VL,        33, SField::sMD_Default, SField::notSigning)
 TYPED_SFIELD(sfHookName,                 VL,        97)
 TYPED_SFIELD(sfRemarkValue,              VL,        98)
 TYPED_SFIELD(sfRemarkName,               VL,        99)
@@ -390,8 +386,6 @@ UNTYPED_SFIELD(sfXChainClaimAttestationCollectionElement, OBJECT, 30)
 UNTYPED_SFIELD(sfXChainCreateAccountAttestationCollectionElement, OBJECT, 31)
 UNTYPED_SFIELD(sfPriceData,              OBJECT,    32)
 UNTYPED_SFIELD(sfCredential,             OBJECT,    33)
-UNTYPED_SFIELD(sfRandomDigestEntry,      OBJECT,    88)
-UNTYPED_SFIELD(sfManifest,               OBJECT,    90)
 UNTYPED_SFIELD(sfAmountEntry,            OBJECT,    91)
 UNTYPED_SFIELD(sfMintURIToken,           OBJECT,    92)
 UNTYPED_SFIELD(sfHookEmission,           OBJECT,    93)
@@ -431,8 +425,6 @@ UNTYPED_SFIELD(sfAuthAccounts,           ARRAY,     25)
 UNTYPED_SFIELD(sfAuthorizeCredentials,   ARRAY,     26)
 UNTYPED_SFIELD(sfUnauthorizeCredentials, ARRAY,     27)
 UNTYPED_SFIELD(sfAcceptedCredentials,    ARRAY,     28)
-// RNG validator commitments: never written to metadata (see featureRNG)
-UNTYPED_SFIELD(sfRandomDigests,          ARRAY,     91, SField::sMD_Never)
 UNTYPED_SFIELD(sfAmounts,                ARRAY,     92)
 UNTYPED_SFIELD(sfHookEmissions,          ARRAY,     93)
 UNTYPED_SFIELD(sfImportVLKeys,           ARRAY,     94)
@@ -74,7 +74,6 @@ TRANSACTION(ttACCOUNT_SET, 3, AccountSet, ({
    {sfTickSize, soeOPTIONAL},
    {sfNFTokenMinter, soeOPTIONAL},
    {sfHookStateScale, soeOPTIONAL},
-    {sfAppLoader, soeOPTIONAL},
 }))

 /** This transaction type cancels an existing escrow. */
@@ -501,28 +500,6 @@ TRANSACTION(ttPERMISSIONED_DOMAIN_DELETE, 72, PermissionedDomainDelete, ({
    {sfDomainID, soeREQUIRED},
 }))

-/** featureRNG: a validator's entropy contribution for one ledger.
-
-    Each proposing UNLReport validator places exactly one of these in its own
-    initial position when it closes the ledger. It reveals the secret behind
-    the validator's commitment currently stored in the Random object (if any)
-    and commits to the secret it will reveal next time. It never enters the
-    open ledger, so a reveal only becomes public after the revealing
-    validator's transaction set is locked.
- */
-TRANSACTION(ttENTROPY, 89, Entropy, ({
-    {sfLedgerSequence, soeREQUIRED},
-    {sfPublicKey, soeREQUIRED},
-    {sfNextRandomDigest, soeREQUIRED},
-    {sfRandomData, soeOPTIONAL},
-}))
-
-/* sfAccount is supplied by TxFormats::commonFields; listing it here as well
-   makes the SOTemplate reject the format at construction. */
-TRANSACTION(ttMANIFEST_SET, 91, SetManifest, ({
-    {sfManifest, soeREQUIRED},
-}))
-
 /* A pseudo-txn alarm signal for invoking a hook, emitted by validators after alarm set conditions are met */
 TRANSACTION(ttCRON, 92, Cron, ({
    {sfOwner, soeREQUIRED},
@@ -47,7 +47,6 @@ JSS(AL_hit_rate);    // out: GetCounts
 JSS(AcceptedCredentials);  // out: AccountObjects
 JSS(Account);        // in: TransactionSign; field.
 JSS(AMMID);          // field
-JSS(API);            // out: RPC server_definitions (HOOK)
 JSS(Amount);         // in: TransactionSign; field.
 JSS(Authorize);      // field
 JSS(Amount2);        // in/out: AMM IOU/XRP pool, deposit, withdraw amount
@@ -69,9 +68,6 @@ JSS(Destination);      // in: TransactionSign; field.
 JSS(EPrice);           // in: AMM Deposit option
 JSS(Fee);              // in/out: TransactionSign; field.
 JSS(FIELDS);           // out: RPC server_definitions
-JSS(HOOK);             // out: RPC server_definitions
-JSS(KEYLET_TYPES);     // out: RPC server_definitions (HOOK)
-JSS(RETURN_CODES);     // out: RPC server_definitions (HOOK)
 JSS(Flags);            // in/out: TransactionSign; field.
 JSS(GenesisMints);
 JSS(GovernanceMarks);
@@ -171,7 +167,6 @@ JSS(amendment_blocked);           // out: NetworkOPs
 JSS(amm_account);                 // in: amm_info
 JSS(amount);                      // out: AccountChannels, amm_info
 JSS(amount2);                     // out: amm_info
-JSS(anchored_through);            // out: CatalogueLoad
 JSS(api_version);                 // in: many, out: Version
 JSS(api_version_low);             // out: Version
 JSS(applied);                     // out: SubmitTransaction
@@ -239,7 +234,7 @@ JSS(closed);                 // out: NetworkOPs, LedgerToJson,
                             //      handlers/Ledger
 JSS(closed_ledger);          // out: NetworkOPs
 JSS(cluster);                // out: PeerImp
-JSS(code);                   // in: HookValidate; out: errors
+JSS(code);                   // out: errors
 JSS(command);                // in: RPCHandler
 JSS(complete);               // out: NetworkOPs, InboundLedger
 JSS(complete_ledgers);       // out: NetworkOPs, PeerImp
@@ -297,9 +292,7 @@ JSS(duration_us);             // out: NetworkOPs
 JSS(effective);               // out: ValidatorList
                              // in: UNL
 JSS(elapsed_seconds);
-JSS(enabled);                // out: AmendmentTable (on-ledger);
-                             //      ServerDefinitions (this server)
-JSS(ledger_enabled);         // out: ServerDefinitions (on-ledger)
+JSS(enabled);                // out: AmendmentTable
 JSS(engine_result);          // out: NetworkOPs, TransactionSign, Submit
 JSS(engine_result_code);     // out: NetworkOPs, TransactionSign, Submit
 JSS(engine_result_message);  // out: NetworkOPs, TransactionSign, Submit
@@ -357,7 +350,6 @@ JSS(hash_mismatches);       // out: catalogue
 JSS(have_header);           // out: InboundLedger
 JSS(have_state);            // out: InboundLedger
 JSS(have_transactions);     // out: InboundLedger
-JSS(hooks);                 // in/out: AccountInfo
 JSS(high);                  // out: BookChanges
 JSS(highest_sequence);      // out: AccountInfo
 JSS(highest_ticket);        // out: AccountInfo
@@ -379,8 +371,6 @@ JSS(index);    // in: LedgerEntry,
               //      LedgerEntry, TxHistory, LedgerData
 JSS(info);     // out: ServerInfo, ConsensusInfo, FetchInfo
 JSS(initial_sync_duration_us);
-JSS(instruction_count_cbak);  // out: HookValidate
-JSS(instruction_count_hook);  // out: HookValidate
 JSS(internal_command);     // in: Internal
 JSS(invalid_API_version);  // out: Many, when a request has an invalid
                           //      version
@@ -454,7 +444,6 @@ JSS(local);                   // out: resource/Logic.h
 JSS(local_txs);               // out: GetCounts
 JSS(local_static_keys);       // out: ValidatorList
 JSS(locked_balance);          // out: AccountLines
-JSS(log);                     // out: HookValidate
 JSS(low);                     // out: BookChanges
 JSS(lock_count);              // out: AccountLines
 JSS(lowest_sequence);         // out: AccountInfo
@@ -593,6 +582,7 @@ JSS(queue_data);        // out: AccountInfo
 JSS(queued);            // out: SubmitTransaction
 JSS(queued_duration_us);
 JSS(quote_asset);           // in: get_aggregate_price
+JSS(random);                // out: Random
 JSS(raw_meta);              // out: AcceptedLedgerTx
 JSS(receive_currencies);    // out: AccountCurrencies
 JSS(reference_level);       // out: TxQ
@@ -610,7 +600,6 @@ JSS(reserve_base_native);   // out: NetworkOPs
 JSS(reserve_inc);           // out: NetworkOPs
 JSS(reserve_inc_xrp);       // out: NetworkOPs
 JSS(reserve_inc_native);    // out: NetworkOPs
-JSS(reset);                 // in/out: PWAInfo
 JSS(response);              // websocket
 JSS(result);                // RPC
 JSS(ripple_lines);          // out: NetworkOPs
@@ -745,7 +734,6 @@ JSS(TRANSACTION_FLAGS_INDICES);  // out: RPC server_definitions
 JSS(type_hex);                   // out: STPathSet
 JSS(unl);                        // out: UnlList
 JSS(unlimited);                  // out: Connection.h
-JSS(unpinned);                   // out: CatalogueUnpin
 JSS(uptime);                     // out: GetCounts
 JSS(uri);                        // out: ValidatorSites
 JSS(url);                        // in/out: Subscribe, Unsubscribe
@@ -753,7 +741,6 @@ JSS(url_password);               // in: Subscribe
 JSS(url_username);               // in: Subscribe
 JSS(urlgravatar);                //
 JSS(username);                   // in: Subscribe
-JSS(valid);                      // out: HookValidate
 JSS(validated);                  // out: NetworkOPs, RPCHelpers, AccountTx*
                                 //      Tx
 JSS(validator_list_expires);     // out: NetworkOps, ValidatorList
@@ -775,7 +762,6 @@ JSS(validator_sites);  // out: ValidatorSites
 JSS(value);            // out: STAmount
 JSS(version);          // out: RPCVersion
 JSS(vetoed);           // out: AmendmentTableImpl
-JSS(vm_error);         // out: HookValidate
 JSS(volume_a);         // out: BookChanges
 JSS(volume_b);         // out: BookChanges
 JSS(vote);             // in: Feature
@@ -22,7 +22,6 @@

 #include <xrpl/basics/BasicConfig.h>
 #include <xrpl/beast/net/IPEndpoint.h>
-#include <xrpl/protocol/AccountID.h>
 #include <boost/asio/ip/address.hpp>
 #include <boost/asio/ip/network_v4.hpp>
 #include <boost/asio/ip/network_v6.hpp>
@@ -58,12 +57,6 @@ struct Port
    std::vector<boost::asio::ip::network_v6> admin_nets_v6;
    std::vector<boost::asio::ip::network_v4> secure_gateway_nets_v4;
    std::vector<boost::asio::ip::network_v6> secure_gateway_nets_v6;
-    // "pwa" ports only; see the "pwa ports" section of xahaud-example.cfg.
-    std::set<std::string> pwa_domains;  // zones, lower case, no trailing dot
-    std::set<AccountID> pwa_allowlist;  // if non-empty, only these are served
-    std::set<AccountID> pwa_blocklist;  // never served; wins over allowlist
-    bool pwa_custom_domains = false;    // serve hosts named by TXT records
-    std::optional<beast::IP::Endpoint> pwa_resolver;  // for those; else system
    std::string user;
    std::string password;
    std::string admin_user;
@@ -100,18 +93,8 @@ struct Port
        return protocol.count("udp") > 0;
    }

-    bool
-    has_peer() const
-    {
-        return protocol.count("peer") > 0;
-    }
-
    // Maximum UDP packet size (default 64KB)
    std::size_t udp_packet_size = 65536;
-
-    // If this is a peer port, also listen for UDP Superhighway (XUSH)
-    // datagrams on the same port number.
-    bool udp_highway = false;
 };

 std::ostream&
@@ -143,9 +126,6 @@ struct ParsedPort
    std::vector<boost::asio::ip::network_v6> admin_nets_v6;
    std::vector<boost::asio::ip::network_v4> secure_gateway_nets_v4;
    std::vector<boost::asio::ip::network_v6> secure_gateway_nets_v6;
-    std::set<std::string> pwa_domains;
-    bool pwa_custom_domains = false;
-    std::optional<beast::IP::Endpoint> pwa_resolver;
 };

 void
@@ -24,8 +24,7 @@
 #include <xrpl/beast/utility/PropertyStream.h>
 #include <xrpl/server/Port.h>
 #include <xrpl/server/detail/ServerImpl.h>
-
-#include <boost/asio/io_context.hpp>
+#include <boost/asio/io_service.hpp>

 namespace ripple {

@@ -34,10 +33,10 @@ template <class Handler>
 std::unique_ptr<Server>
 make_Server(
    Handler& handler,
-    boost::asio::io_context& io_context,
+    boost::asio::io_service& io_service,
    beast::Journal journal)
 {
-    return std::make_unique<ServerImpl<Handler>>(handler, io_context, journal);
+    return std::make_unique<ServerImpl<Handler>>(handler, io_service, journal);
 }

 }  // namespace ripple
@@ -86,7 +86,9 @@ public:
             ++iter)
        {
            typename BufferSequence::value_type const& buffer(*iter);
-            write(buffer.data(), boost::asio::buffer_size(buffer));
+            write(
+                boost::asio::buffer_cast<void const*>(buffer),
+                boost::asio::buffer_size(buffer));
        }
    }

@@ -100,7 +102,7 @@ public:

    /** Detach the session.
        This holds the session open so that the response can be sent
-        asynchronously. Calls to io_context::run made by the server
+        asynchronously. Calls to io_service::run made by the server
        will not return until all detached sessions are closed.
    */
    virtual std::shared_ptr<Session>
@@ -24,12 +24,10 @@
 #include <xrpl/beast/net/IPAddressConversion.h>
 #include <xrpl/beast/utility/instrumentation.h>
 #include <xrpl/server/Session.h>
-#include <xrpl/server/detail/Spawn.h>
 #include <xrpl/server/detail/io_list.h>
 #include <boost/asio/ip/tcp.hpp>
 #include <boost/asio/spawn.hpp>
 #include <boost/asio/ssl/stream.hpp>
-#include <boost/asio/strand.hpp>
 #include <boost/asio/streambuf.hpp>
 #include <boost/beast/core/stream_traits.hpp>
 #include <boost/beast/http/dynamic_body.hpp>
@@ -216,8 +214,8 @@ BaseHTTPPeer<Handler, Impl>::BaseHTTPPeer(
    ConstBufferSequence const& buffers)
    : port_(port)
    , handler_(handler)
-    , work_(boost::asio::make_work_guard(executor))
-    , strand_(boost::asio::make_strand(executor))
+    , work_(executor)
+    , strand_(executor)
    , remote_address_(remote_address)
    , journal_(journal)
 {
@@ -302,13 +300,7 @@ BaseHTTPPeer<Handler, Impl>::do_read(yield_context do_yield)
 {
    complete_ = false;
    error_code ec;
-    // Do not treat an established keep-alive waiting for its next request as
-    // an unfinished loopback request.
-    if (request_count_ == 0)
-        start_timer();
-    else
-        boost::beast::get_lowest_layer(impl().stream_)
-            .expires_after(std::chrono::seconds(timeoutSeconds));
+    start_timer();
    boost::beast::http::async_read(
        impl().stream_, read_buf_, message_, do_yield[ec]);
    cancel_timer();
@@ -363,7 +355,7 @@ BaseHTTPPeer<Handler, Impl>::on_write(
        return;
    if (graceful_)
        return do_close();
-    util::spawn(
+    boost::asio::spawn(
        strand_,
        std::bind(
            &BaseHTTPPeer<Handler, Impl>::do_read,
@@ -382,7 +374,7 @@ BaseHTTPPeer<Handler, Impl>::do_writer(
    {
        auto const p = impl().shared_from_this();
        resume = std::function<void(void)>([this, p, writer, keep_alive]() {
-            util::spawn(
+            boost::asio::spawn(
                strand_,
                std::bind(
                    &BaseHTTPPeer<Handler, Impl>::do_writer,
@@ -413,7 +405,7 @@ BaseHTTPPeer<Handler, Impl>::do_writer(
    if (!keep_alive)
        return do_close();

-    util::spawn(
+    boost::asio::spawn(
        strand_,
        std::bind(
            &BaseHTTPPeer<Handler, Impl>::do_read,
@@ -455,14 +447,14 @@ BaseHTTPPeer<Handler, Impl>::write(
    std::shared_ptr<Writer> const& writer,
    bool keep_alive)
 {
-    util::spawn(
+    boost::asio::spawn(bind_executor(
        strand_,
        std::bind(
            &BaseHTTPPeer<Handler, Impl>::do_writer,
            impl().shared_from_this(),
            writer,
            keep_alive,
-            std::placeholders::_1));
+            std::placeholders::_1)));
 }

 // DEPRECATED
@@ -497,12 +489,12 @@ BaseHTTPPeer<Handler, Impl>::complete()
    }

    // keep-alive
-    util::spawn(
+    boost::asio::spawn(bind_executor(
        strand_,
        std::bind(
            &BaseHTTPPeer<Handler, Impl>::do_read,
            impl().shared_from_this(),
-            std::placeholders::_1));
+            std::placeholders::_1)));
 }

 // DEPRECATED
@@ -89,8 +89,8 @@ BasePeer<Handler, Impl>::BasePeer(
              return "##" + std::to_string(++id) + " ";
          }())
    , j_(sink_)
-    , work_(boost::asio::make_work_guard(executor))
-    , strand_(boost::asio::make_strand(executor))
+    , work_(executor)
+    , strand_(executor)
 {
 }

@@ -29,7 +29,6 @@
 #include <xrpl/server/detail/BasePeer.h>
 #include <xrpl/server/detail/LowestLayer.h>

-#include <boost/asio/error.hpp>
 #include <boost/beast/core/multi_buffer.hpp>
 #include <boost/beast/http/message.hpp>
 #include <boost/beast/websocket.hpp>
@@ -421,17 +420,11 @@ BaseWSPeer<Handler, Impl>::start_timer()
    // Max seconds without completing a message
    static constexpr std::chrono::seconds timeout{30};
    static constexpr std::chrono::seconds timeoutLocal{3};
-
-    try
-    {
-        timer_.expires_after(
-            remote_endpoint().address().is_loopback() ? timeoutLocal : timeout);
-    }
-    catch (boost::system::system_error const& e)
-    {
-        return fail(e.code(), "start_timer");
-    }
-
+    error_code ec;
+    timer_.expires_from_now(
+        remote_endpoint().address().is_loopback() ? timeoutLocal : timeout, ec);
+    if (ec)
+        return fail(ec, "start_timer");
    timer_.async_wait(bind_executor(
        strand_,
        std::bind(
@@ -445,14 +438,8 @@ template <class Handler, class Impl>
 void
 BaseWSPeer<Handler, Impl>::cancel_timer()
 {
-    try
-    {
-        timer_.cancel();
-    }
-    catch (boost::system::system_error const&)
-    {
-        // ignored
-    }
+    error_code ec;
+    timer_.cancel(ec);
 }

 template <class Handler, class Impl>
@@ -69,7 +69,7 @@ private:
        stream_type stream_;
        socket_type& socket_;
        endpoint_type remote_address_;
-        boost::asio::strand<boost::asio::io_context::executor_type> strand_;
+        boost::asio::io_context::strand strand_;
        beast::Journal const j_;

    public:
@@ -95,7 +95,7 @@ private:
    Handler& handler_;
    boost::asio::io_context& ioc_;
    acceptor_type acceptor_;
-    boost::asio::strand<boost::asio::io_context::executor_type> strand_;
+    boost::asio::io_context::strand strand_;
    bool ssl_;
    bool plain_;

@@ -155,7 +155,7 @@ Door<Handler>::Detector::Detector(
    , stream_(std::move(stream))
    , socket_(stream_.socket())
    , remote_address_(remote_address)
-    , strand_(boost::asio::make_strand(ioc_))
+    , strand_(ioc_)
    , j_(j)
 {
 }
@@ -164,7 +164,7 @@ template <class Handler>
 void
 Door<Handler>::Detector::run()
 {
-    util::spawn(
+    boost::asio::spawn(
        strand_,
        std::bind(
            &Detector::do_detect,
@@ -269,7 +269,7 @@ Door<Handler>::reOpen()
        Throw<std::exception>();
    }

-    acceptor_.listen(boost::asio::socket_base::max_listen_connections, ec);
+    acceptor_.listen(boost::asio::socket_base::max_connections, ec);
    if (ec)
    {
        JLOG(j_.error()) << "Listen on port '" << port_.name
@@ -291,14 +291,14 @@ Door<Handler>::Door(
    , handler_(handler)
    , ioc_(io_context)
    , acceptor_(io_context)
-    , strand_(boost::asio::make_strand(io_context))
+    , strand_(io_context)
    , ssl_(
          port_.protocol.count("https") > 0 ||
          port_.protocol.count("wss") > 0 || port_.protocol.count("wss2") > 0 ||
          port_.protocol.count("peer") > 0)
    , plain_(
          port_.protocol.count("http") > 0 || port_.protocol.count("ws") > 0 ||
-          port_.protocol.count("ws2") || port_.protocol.count("pwa"))
+          port_.protocol.count("ws2"))
 {
    reOpen();
 }
@@ -307,7 +307,7 @@ template <class Handler>
 void
 Door<Handler>::run()
 {
-    util::spawn(
+    boost::asio::spawn(
        strand_,
        std::bind(
            &Door<Handler>::do_accept,
@@ -320,8 +320,7 @@ void
 Door<Handler>::close()
 {
    if (!strand_.running_in_this_thread())
-        return boost::asio::post(
-            strand_,
+        return strand_.post(
            std::bind(&Door<Handler>::close, this->shared_from_this()));
    error_code ec;
    acceptor_.close(ec);
@@ -401,7 +400,7 @@ Door<Handler>::do_accept(boost::asio::yield_context do_yield)
        {
            create(
                ssl_,
-                boost::asio::const_buffer{},
+                boost::asio::null_buffers{},
                std::move(stream),
                remote_address);
        }
@@ -103,7 +103,7 @@ PlainHTTPPeer<Handler>::run()
 {
    if (!this->handler_.onAccept(this->session(), this->remote_address_))
    {
-        util::spawn(
+        boost::asio::spawn(
            this->strand_,
            std::bind(&PlainHTTPPeer::do_close, this->shared_from_this()));
        return;
@@ -112,7 +112,7 @@ PlainHTTPPeer<Handler>::run()
    if (!socket_.is_open())
        return;

-    util::spawn(
+    boost::asio::spawn(
        this->strand_,
        std::bind(
            &PlainHTTPPeer::do_read,
@@ -113,14 +113,14 @@ SSLHTTPPeer<Handler>::run()
 {
    if (!this->handler_.onAccept(this->session(), this->remote_address_))
    {
-        util::spawn(
+        boost::asio::spawn(
            this->strand_,
            std::bind(&SSLHTTPPeer::do_close, this->shared_from_this()));
        return;
    }
    if (!socket_.is_open())
        return;
-    util::spawn(
+    boost::asio::spawn(
        this->strand_,
        std::bind(
            &SSLHTTPPeer::do_handshake,
@@ -162,7 +162,7 @@ SSLHTTPPeer<Handler>::do_handshake(yield_context do_yield)
        this->port().protocol.count("https") > 0;
    if (http)
    {
-        util::spawn(
+        boost::asio::spawn(
            this->strand_,
            std::bind(
                &SSLHTTPPeer::do_read,
@@ -27,8 +27,6 @@
 #include <xrpl/server/detail/io_list.h>

 #include <boost/asio.hpp>
-#include <boost/asio/executor_work_guard.hpp>
-#include <boost/asio/io_context.hpp>

 #include <array>
 #include <chrono>
@@ -88,11 +86,9 @@ private:

    Handler& handler_;
    beast::Journal const j_;
-    boost::asio::io_context& io_context_;
-    boost::asio::strand<boost::asio::io_context::executor_type> strand_;
-    std::optional<boost::asio::executor_work_guard<
-        boost::asio::io_context::executor_type>>
-        work_;
+    boost::asio::io_service& io_service_;
+    boost::asio::io_service::strand strand_;
+    std::optional<boost::asio::io_service::work> work_;

    std::mutex m_;
    std::vector<Port> ports_;
@@ -105,7 +101,7 @@ private:
 public:
    ServerImpl(
        Handler& handler,
-        boost::asio::io_context& io_context,
+        boost::asio::io_service& io_service,
        beast::Journal journal);

    ~ServerImpl();
@@ -128,10 +124,10 @@ public:
        return ios_;
    }

-    boost::asio::io_context&
-    get_io_context()
+    boost::asio::io_service&
+    get_io_service()
    {
-        return io_context_;
+        return io_service_;
    }

    bool
@@ -145,13 +141,13 @@ private:
 template <class Handler>
 ServerImpl<Handler>::ServerImpl(
    Handler& handler,
-    boost::asio::io_context& io_context,
+    boost::asio::io_service& io_service,
    beast::Journal journal)
    : handler_(handler)
    , j_(journal)
-    , io_context_(io_context)
-    , strand_(boost::asio::make_strand(io_context_))
-    , work_(std::in_place, boost::asio::make_work_guard(io_context_))
+    , io_service_(io_service)
+    , strand_(io_service_)
+    , work_(io_service_)
 {
 }

@@ -183,7 +179,7 @@ ServerImpl<Handler>::ports(std::vector<Port> const& ports)
        {
            // UDP-RPC door
            if (auto sp = ios_.emplace<UDPDoor<Handler>>(
-                    handler_, io_context_, internalPort, j_))
+                    handler_, io_service_, internalPort, j_))
            {
                auto ep = sp->get_endpoint();
                if (!internalPort.port)
@@ -197,7 +193,7 @@ ServerImpl<Handler>::ports(std::vector<Port> const& ports)
        {
            // Standard TCP door
            if (auto sp = ios_.emplace<Door<Handler>>(
-                    handler_, io_context_, internalPort, j_))
+                    handler_, io_service_, internalPort, j_))
            {
                list_.push_back(sp);

@@ -208,16 +204,6 @@ ServerImpl<Handler>::ports(std::vector<Port> const& ports)

                sp->run();
            }
-
-            // UDP Superhighway (XUSH) datagrams arrive on the peer port
-            // number. TCP and UDP port numbers are independent, so this
-            // needs no socket sharing with the TCP door.
-            if (internalPort.has_peer() && internalPort.udp_highway)
-            {
-                if (auto sp = ios_.emplace<UDPDoor<Handler>>(
-                        handler_, io_context_, internalPort, j_))
-                    sp->run();
-            }
        }
    }
    return eps;
@@ -1,111 +0,0 @@
-//------------------------------------------------------------------------------
-/*
-    This file is part of rippled: https://github.com/ripple/rippled
-    Copyright(c) 2025 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.
-*/
-//==============================================================================
-
-#ifndef RIPPLE_SERVER_SPAWN_H_INCLUDED
-#define RIPPLE_SERVER_SPAWN_H_INCLUDED
-
-#include <xrpl/basics/Log.h>
-
-#include <boost/asio/spawn.hpp>
-#include <boost/asio/strand.hpp>
-
-#include <concepts>
-#include <type_traits>
-
-namespace ripple::util {
-namespace impl {
-
-template <typename T>
-concept IsStrand = std::same_as<
-    std::decay_t<T>,
-    boost::asio::strand<typename std::decay_t<T>::inner_executor_type>>;
-
-/**
- * @brief A completion handler that restores `boost::asio::spawn`'s behaviour
- * from Boost 1.83
- *
- * This is intended to be passed as the third argument to `boost::asio::spawn`
- * so that exceptions are not ignored but propagated to `io_context.run()` call
- * site.
- *
- * @param ePtr The exception that was caught on the coroutine
- */
-inline constexpr auto kPROPAGATE_EXCEPTIONS = [](std::exception_ptr ePtr) {
-    if (ePtr)
-    {
-        try
-        {
-            std::rethrow_exception(ePtr);
-        }
-        catch (std::exception const& e)
-        {
-            JLOG(debugLog().warn()) << "Spawn exception: " << e.what();
-            throw;
-        }
-        catch (...)
-        {
-            JLOG(debugLog().warn()) << "Spawn exception: Unknown";
-            throw;
-        }
-    }
-};
-
-}  // namespace impl
-
-/**
- * @brief Spawns a coroutine using `boost::asio::spawn`
- *
- * @note This uses kPROPAGATE_EXCEPTIONS to force asio to propagate exceptions
- * through `io_context`
- * @note Since implicit strand was removed from boost::asio::spawn this helper
- * function adds the strand back
- *
- * @tparam Ctx The type of the context/strand
- * @tparam F The type of the function to execute
- * @param ctx The execution context
- * @param func The function to execute. Must return `void`
- */
-template <typename Ctx, typename F>
-    requires std::is_invocable_r_v<void, F, boost::asio::yield_context>
-void
-spawn(Ctx&& ctx, F&& func)
-{
-    if constexpr (impl::IsStrand<Ctx>)
-    {
-        boost::asio::spawn(
-            std::forward<Ctx>(ctx),
-            std::forward<F>(func),
-            impl::kPROPAGATE_EXCEPTIONS);
-    }
-    else
-    {
-        // make_strand accepts an executor or an execution context directly.
-        // Going through get_associated_executor here resolved a plain
-        // executor to asio's inline executor, which cannot be stranded and
-        // did not compile; nothing in the tree had instantiated this branch.
-        boost::asio::spawn(
-            boost::asio::make_strand(std::forward<Ctx>(ctx)),
-            std::forward<F>(func),
-            impl::kPROPAGATE_EXCEPTIONS);
-    }
-}
-
-}  // namespace ripple::util
-
-#endif
@@ -78,9 +78,10 @@ public:
        error_code ec;

        // Create UDP endpoint from port configuration
-        boost::asio::ip::udp::endpoint udp_endpoint(port_.ip, port_.port);
+        auto const addr = port_.ip.to_v4();
+        boost::asio::ip::udp::endpoint udp_endpoint(addr, port_.port);

-        socket_.open(udp_endpoint.protocol(), ec);
+        socket_.open(boost::asio::ip::udp::v4(), ec);
        if (ec)
        {
            JLOG(j_.error()) << "UDP socket open failed: " << ec.message();
@@ -93,22 +94,17 @@ public:
        {
            JLOG(j_.error())
                << "UDP set reuse_address failed: " << ec.message();
-            close();
            return;
        }

        socket_.bind(udp_endpoint, ec);
        if (ec)
        {
-            // Close the socket so that run() does not start receiving on an
-            // unbound socket, which would silently bind an ephemeral port.
-            JLOG(j_.error()) << "UDP socket bind to " << udp_endpoint
-                             << " failed: " << ec.message();
-            close();
+            JLOG(j_.error()) << "UDP socket bind failed: " << ec.message();
            return;
        }

-        JLOG(j_.info()) << "UDP listening on " << udp_endpoint;
+        JLOG(j_.info()) << "UDP-RPC listening on " << udp_endpoint;
    }

    endpoint_type
@@ -173,7 +169,6 @@ private:
        handler_.onUDPMessage(
            std::string(recv_buffer_.data(), bytes_transferred),
            tcp_endpoint,
-            port_,
            [this, tcp_endpoint](std::string const& response) {
                do_send(response, tcp_endpoint);
            });
@@ -166,7 +166,7 @@ public:
            May be called concurrently.

        Preconditions:
-            No call to io_context::run on any io_context
+            No call to io_service::run on any io_service
            used by work objects associated with this io_list
            exists in the caller's call stack.
    */
@@ -0,0 +1,20 @@
+[project]
+name = "json-tx"
+version = "0.0.1"
+description = "Prototype: canonical packing of (tx_json_str, signature) using ripple-binary-codec output as an LZ dictionary"
+requires-python = ">=3.10"
+dependencies = [
+    "xrpl-py>=4.0.0",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/json_tx"]
+
+[tool.uv]
+dev-dependencies = [
+    "pytest>=8.0",
+]
@@ -0,0 +1,24 @@
+from json_tx import patch  # noqa: F401  -- side-effect: register JsonTxCompressed
+from json_tx.codec import (
+    JSON_TX_FIELD,
+    TAGS,
+    canonical_json,
+    compress_stream,
+    decompress_stream,
+    pack,
+    pack_wire,
+    unpack,
+    unpack_wire,
+)
+
+__all__ = [
+    "JSON_TX_FIELD",
+    "TAGS",
+    "canonical_json",
+    "compress_stream",
+    "decompress_stream",
+    "pack",
+    "pack_wire",
+    "unpack",
+    "unpack_wire",
+]
@@ -0,0 +1,79 @@
+"""Demo: compare classical binary, raw JSON+sig, and JsonTxCompressed wire."""
+
+from __future__ import annotations
+
+import json
+
+from xrpl.core.binarycodec import encode, encode_for_signing
+from xrpl.core.keypairs import (
+    derive_classic_address,
+    derive_keypair,
+    generate_seed,
+    sign,
+)
+
+from json_tx import canonical_json, compress_stream, pack_wire, unpack_wire
+
+
+SAMPLE_TX = {
+    "TransactionType": "Payment",
+    "Account": "rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh",
+    "Destination": "rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn",
+    "Amount": "1000000",
+    "Fee": "12",
+    "Sequence": 1,
+    "Flags": 2147483648,
+    "SigningPubKey": "",
+}
+
+
+def _report(label: str, tx: dict, tx_json_str: str, priv: str) -> None:
+    signature = bytes.fromhex(sign(tx_json_str.encode().hex(), priv))
+
+    # 1. Classical signed wire: full binary with TxnSignature (what xrpl does today).
+    classical_signing = bytes.fromhex(encode_for_signing(tx))
+    classical_signed_dict = dict(tx)
+    classical_signed_dict["TxnSignature"] = signature.hex().upper()
+    classical_wire = bytes.fromhex(encode(classical_signed_dict))
+
+    # 2. Naive JSON submission: tx_json_str + signature (what json-tx wants to replace).
+    raw_json_plus_sig = len(tx_json_str) + len(signature)
+
+    # 3. json-tx wire: classical binary (ex TxnSignature) + JsonTxCompressed + TxnSignature.
+    stream = compress_stream(tx_json_str, tx_json=tx)
+    jsontx_wire = pack_wire(tx_json_str, signature)
+
+    print(f"\n== {label} ==")
+    print(f"  tx_json_str                       : {len(tx_json_str):5d} bytes")
+    print(f"  signature                         : {len(signature):5d} bytes")
+    print(f"  classical binary (signing payload): {len(classical_signing):5d} bytes")
+    print(f"  classical wire (binary + sig)     : {len(classical_wire):5d} bytes   <- today")
+    print(f"  raw JSON + sig (bytes sent)       : {raw_json_plus_sig:5d} bytes   <- naive json submit")
+    print(f"  JsonTxCompressed stream alone     : {len(stream):5d} bytes   [mode=0x{stream[0]:02x}]")
+    print(f"  json-tx wire (classical + stream) : {len(jsontx_wire):5d} bytes   <- proposed")
+    delta_vs_classical = len(jsontx_wire) - len(classical_wire)
+    print(f"    overhead vs classical wire      : {delta_vs_classical:+5d} bytes")
+    delta_vs_raw = len(jsontx_wire) - raw_json_plus_sig
+    print(f"    overhead vs raw JSON+sig        : {delta_vs_raw:+5d} bytes")
+
+    recovered_tx, recovered_str, recovered_sig = unpack_wire(jsontx_wire)
+    assert recovered_str == tx_json_str
+    assert recovered_sig == signature
+    assert recovered_tx == tx
+
+
+def main() -> None:
+    seed = generate_seed()
+    pub, priv = derive_keypair(seed)
+    tx = dict(SAMPLE_TX)
+    tx["Account"] = derive_classic_address(pub)
+    tx["SigningPubKey"] = pub
+
+    _report("canonical tx_json_str (ordinal order, no whitespace)",
+            tx, canonical_json(tx), priv)
+    _report("non-canonical tx_json_str (insertion order + spaces)",
+            tx, json.dumps(tx, separators=(", ", ": ")), priv)
+
+
+if __name__ == "__main__":
+    main()
@@ -0,0 +1,384 @@
+"""
+json-tx: field-aware packer for (tx_json_str, signature).
+
+The ripple binary codec already decomposes a transaction into ordered
+(field_name, canonical_bytes) pairs. We reuse that as the dictionary.
+
+Opcode stream:
+    OP_FIELD  i          -> render field i exactly as it appears in tx_json_str
+    OP_TAG    t          -> emit a glue snippet from TAGS (',', ':', '"', ...)
+    OP_RAW    n  <bytes> -> n bytes of literal passthrough
+    OP_END               -> terminator
+
+The stream is what gets stored in the `JsonTxCompressed` Blob field on
+the wire. The TxnSignature field still carries the ed25519/secp256k1
+signature, but that signature is now over the ASCII `tx_json_str`, not
+the classical signing payload.
+"""
+
+from __future__ import annotations
+
+import json
+from dataclasses import dataclass
+from typing import Any
+
+from xrpl.core.binarycodec.definitions.field_instance import FieldInstance
+from xrpl.core.binarycodec.types.st_object import STObject
+
+# `patch` registers the JsonTxCompressed field. Imported for its side effect.
+from json_tx import patch as _patch  # noqa: F401
+
+OP_FIELD = 0x01   # emit `"<name>":<canonical-value>` (tight pair)
+OP_TAG = 0x02     # emit a structural glue byte
+OP_RAW = 0x03     # length-prefixed literal bytes
+OP_NAME = 0x04    # emit `"<name>"` for field i
+OP_VALUE = 0x05   # emit canonical rendering of field i's value
+OP_END = 0x00
+
+# Mode byte at the head of every stream.
+MODE_CANONICAL = 0x00  # body is an OP_* stream; tx_json_str reconstructs via dictionary
+MODE_VERBATIM = 0x01   # body is raw UTF-8 tx_json_str, length-prefixed
+
+JSON_TX_FIELD = _patch.FIELD_NAME
+
+# Structural glue. INVARIANT: no tag may end in `"` -- otherwise it would
+# eat the leading `"` of a field NAME/FIELD rendering and prevent re-align.
+# Order: longest first so the greedy matcher picks the most specific glue.
+TAGS: list[bytes] = [
+    # comma-based field separators
+    b",\n    ",
+    b",\n\t",
+    b",\n  ",
+    b",\n ",
+    b",\n",
+    b", ",
+    # colon-based name:value separators
+    b":  ",
+    b": ",
+    # leading indent after `{`
+    b"\n    ",
+    b"\n\t",
+    b"\n  ",
+    b"\n ",
+    # single chars
+    b"{",
+    b"}",
+    b"[",
+    b"]",
+    b",",
+    b":",
+    b'"',
+    b" ",
+    b"\n",
+    b"\t",
+]
+
+
+# ---------- varint (unsigned LEB128) ----------
+
+def _vw(n: int) -> bytes:
+    if n < 0:
+        raise ValueError("varint must be non-negative")
+    out = bytearray()
+    while True:
+        b = n & 0x7F
+        n >>= 7
+        if n:
+            out.append(b | 0x80)
+        else:
+            out.append(b)
+            return bytes(out)
+
+
+def _vr(buf: bytes, i: int) -> tuple[int, int]:
+    n = 0
+    shift = 0
+    while True:
+        b = buf[i]
+        i += 1
+        n |= (b & 0x7F) << shift
+        if not (b & 0x80):
+            return n, i
+        shift += 7
+
+
+# ---------- canonical field extraction ----------
+
+@dataclass
+class CanonField:
+    name: str
+    instance: FieldInstance
+    canonical_bytes: bytes
+    value: Any
+
+
+def _ordered_fields_from_dict(tx_json: dict, *, skip: set[str]) -> list[CanonField]:
+    """Serialize tx_json once through STObject, then re-parse to slice each field."""
+    from xrpl.core.binarycodec.binary_wrappers.binary_parser import BinaryParser
+    from xrpl.core.binarycodec.definitions import definitions
+
+    tx_for_enc = {k: v for k, v in tx_json.items() if k not in skip}
+    st = STObject.from_value(tx_for_enc)
+    blob = bytes(st)
+
+    parser = BinaryParser(blob.hex())
+    total = len(parser)
+    fields: list[CanonField] = []
+    while not parser.is_end():
+        start = total - len(parser)
+        fi = parser.read_field()
+        parser.read_field_value(fi)
+        end = total - len(parser)
+        fields.append(
+            CanonField(
+                name=fi.name,
+                instance=definitions.get_field_instance(fi.name),
+                canonical_bytes=blob[start:end],
+                value=tx_json[fi.name],
+            )
+        )
+    return fields
+
+
+def _render_name(name: str) -> bytes:
+    """Render `"Name"` including the enclosing double-quotes."""
+    return json.dumps(name, separators=(",", ":")).encode()
+
+
+def _render_value(value: Any) -> bytes:
+    """Render the canonical JSON form of a value."""
+    return json.dumps(value, separators=(",", ":")).encode()
+
+
+def _render_field_json(name: str, value: Any) -> bytes:
+    """Render one tight `"Name":<value>` pair -- no whitespace."""
+    return _render_name(name) + b":" + _render_value(value)
+
+
+def canonical_json(tx_json: dict) -> str:
+    """Serialize tx_json with fields in canonical (ordinal) order.
+
+    The signed ASCII JSON must match this ordering so the opcode stream
+    can walk fields in lock-step with the binary dictionary. Any field the
+    codec does not recognize falls to the tail in insertion order.
+    """
+    from xrpl.core.binarycodec.definitions import definitions
+
+    known, unknown = [], []
+    for k, v in tx_json.items():
+        try:
+            fi = definitions.get_field_instance(k)
+            known.append((fi.ordinal, k, v))
+        except Exception:
+            unknown.append((k, v))
+    known.sort(key=lambda x: x[0])
+    ordered = [(k, v) for _o, k, v in known] + unknown
+    body = ",".join(
+        f"{json.dumps(k, separators=(',', ':'))}:"
+        f"{json.dumps(v, separators=(',', ':'))}"
+        for k, v in ordered
+    )
+    return "{" + body + "}"
+
+
+# ---------- stream codec (opcode layer only) ----------
+
+def compress_stream(tx_json_str: str, *, tx_json: dict | None = None) -> bytes:
+    """Encode tx_json_str using tx_json's fields as dictionary.
+
+    Opcodes (after the mode byte):
+      OP_FIELD i   -- `"Name":<canonical-value>` tight pair (no whitespace)
+      OP_NAME  i   -- `"Name"` alone (enclosing quotes included)
+      OP_VALUE i   -- canonical rendering of field i's value
+      OP_TAG   t   -- structural glue from TAGS
+      OP_RAW   n.. -- literal passthrough
+
+    The matcher at each cursor position tries, longest-match first:
+      1. OP_FIELD against any unused field pair
+      2. OP_NAME against any unused field name
+      3. OP_VALUE against any unused field value
+      4. OP_TAG
+      5. OP_RAW (one byte, coalesced)
+
+    If the resulting OP stream is not shorter than a verbatim copy, we
+    emit MODE_VERBATIM instead.
+    """
+    if tx_json is None:
+        tx_json = json.loads(tx_json_str)
+    src = tx_json_str.encode()
+
+    fields = _ordered_fields_from_dict(
+        tx_json, skip={"TxnSignature", JSON_TX_FIELD}
+    )
+    name_render = [_render_name(f.name) for f in fields]
+    value_render = [_render_value(f.value) for f in fields]
+    pair_render = [name_render[i] + b":" + value_render[i] for i in range(len(fields))]
+
+    unused_pair = set(range(len(fields)))
+    unused_name = set(range(len(fields)))
+    unused_value = set(range(len(fields)))
+
+    body = bytearray()
+    raw_buf = bytearray()
+
+    def flush_raw() -> None:
+        if raw_buf:
+            body.append(OP_RAW)
+            body.extend(_vw(len(raw_buf)))
+            body.extend(raw_buf)
+            raw_buf.clear()
+
+    def best_match(candidates: set[int], renders: list[bytes], at: int) -> tuple[int, int]:
+        best_idx, best_len = -1, 0
+        for idx in candidates:
+            r = renders[idx]
+            if len(r) > best_len and src.startswith(r, at):
+                best_idx, best_len = idx, len(r)
+        return best_idx, best_len
+
+    i = 0
+    while i < len(src):
+        # Try the tight FIELD match first -- cheapest per byte of output.
+        idx, hit = best_match(unused_pair, pair_render, i)
+        if idx >= 0:
+            flush_raw()
+            body.append(OP_FIELD)
+            body.extend(_vw(idx))
+            i += hit
+            unused_pair.discard(idx)
+            unused_name.discard(idx)
+            unused_value.discard(idx)
+            continue
+
+        # Then NAME (standalone), preferring longer names over shorter ones.
+        idx, hit = best_match(unused_name, name_render, i)
+        if idx >= 0:
+            flush_raw()
+            body.append(OP_NAME)
+            body.extend(_vw(idx))
+            i += hit
+            unused_name.discard(idx)
+            unused_pair.discard(idx)  # no longer a "pair" candidate
+            continue
+
+        # Then VALUE (standalone).
+        idx, hit = best_match(unused_value, value_render, i)
+        if idx >= 0:
+            flush_raw()
+            body.append(OP_VALUE)
+            body.extend(_vw(idx))
+            i += hit
+            unused_value.discard(idx)
+            unused_pair.discard(idx)
+            continue
+
+        # Structural glue.
+        tag_hit = -1
+        for t_idx, tag in enumerate(TAGS):
+            if src.startswith(tag, i):
+                tag_hit = t_idx
+                break
+        if tag_hit >= 0:
+            flush_raw()
+            body.append(OP_TAG)
+            body.extend(_vw(tag_hit))
+            i += len(TAGS[tag_hit])
+            continue
+
+        raw_buf.append(src[i])
+        i += 1
+
+    flush_raw()
+    body.append(OP_END)
+
+    op_form = bytes([MODE_CANONICAL]) + bytes(body)
+    verbatim = bytes([MODE_VERBATIM]) + _vw(len(src)) + src
+    return op_form if len(op_form) <= len(verbatim) else verbatim
+
+
+def decompress_stream(stream: bytes, tx_json_for_dict: dict) -> str:
+    """Rebuild tx_json_str from a json-tx stream + a parsed tx dict (dictionary source)."""
+    mode = stream[0]
+    i = 1
+    if mode == MODE_VERBATIM:
+        ln, i = _vr(stream, i)
+        return stream[i : i + ln].decode()
+    if mode != MODE_CANONICAL:
+        raise ValueError(f"unknown json-tx stream mode 0x{mode:02x}")
+
+    fields = _ordered_fields_from_dict(
+        tx_json_for_dict,
+        skip={"TxnSignature", JSON_TX_FIELD},
+    )
+    name_render = [_render_name(f.name) for f in fields]
+    value_render = [_render_value(f.value) for f in fields]
+    pair_render = [name_render[i] + b":" + value_render[i] for i in range(len(fields))]
+
+    out = bytearray()
+    while i < len(stream):
+        op = stream[i]
+        i += 1
+        if op == OP_END:
+            break
+        if op == OP_FIELD:
+            idx, i = _vr(stream, i)
+            out += pair_render[idx]
+        elif op == OP_NAME:
+            idx, i = _vr(stream, i)
+            out += name_render[idx]
+        elif op == OP_VALUE:
+            idx, i = _vr(stream, i)
+            out += value_render[idx]
+        elif op == OP_TAG:
+            idx, i = _vr(stream, i)
+            out += TAGS[idx]
+        elif op == OP_RAW:
+            ln, i = _vr(stream, i)
+            out += stream[i : i + ln]
+            i += ln
+        else:
+            raise ValueError(f"unknown opcode 0x{op:02x} at offset {i - 1}")
+    return out.decode()
+
+
+# ---------- wire-tx pack/unpack (full binary with JsonTxCompressed) ----------
+
+def pack_wire(tx_json_str: str, signature: bytes) -> bytes:
+    """Build the on-wire binary tx: canonical binary + JsonTxCompressed + TxnSignature.
+
+    `tx_json_str` is the exact ASCII bytes the client signed -- any field
+    order / whitespace. `signature` is the raw signature over those bytes.
+    """
+    from xrpl.core.binarycodec.main import encode
+
+    tx_json = json.loads(tx_json_str)
+    stream = compress_stream(tx_json_str, tx_json=tx_json)
+    wire_dict = dict(tx_json)
+    wire_dict[JSON_TX_FIELD] = stream.hex().upper()
+    wire_dict["TxnSignature"] = signature.hex().upper()
+    return bytes.fromhex(encode(wire_dict))
+
+
+def unpack_wire(wire: bytes) -> tuple[dict, str, bytes]:
+    """Decode the wire tx back into (tx_json_dict, tx_json_str, signature)."""
+    from xrpl.core.binarycodec.main import decode
+
+    decoded = decode(wire.hex().upper())
+    stream_hex = decoded.pop(JSON_TX_FIELD)
+    sig_hex = decoded.pop("TxnSignature")
+    # The dictionary is the other fields of the tx, i.e. the decoded dict
+    # minus the scaffolding keys (already removed above).
+    tx_json_str = decompress_stream(bytes.fromhex(stream_hex), decoded)
+    return json.loads(tx_json_str), tx_json_str, bytes.fromhex(sig_hex)
+
+
+# ---------- convenience ----------
+
+def pack(tx_json: dict, signature: bytes) -> bytes:
+    """Alias for pack_wire for the common case."""
+    return pack_wire(tx_json, signature)
+
+
+def unpack(wire: bytes) -> tuple[dict, bytes]:
+    tx_json, _, sig = unpack_wire(wire)
+    return tx_json, sig
@@ -0,0 +1,50 @@
+"""Runtime monkey-patch: register a `JsonTxCompressed` Blob field.
+
+Import this module (or call `register_json_tx_field()`) before using the
+binary codec so that a transaction dict containing `JsonTxCompressed`
+will serialize it as a Blob and parse it back out.
+
+The field is intentionally `isSigningField=False` — the ASCII JSON is
+what TxnSignature signs, not the binary form, so this field must not
+participate in any classical signing payload.
+"""
+
+from __future__ import annotations
+
+from xrpl.core.binarycodec.definitions import definitions as _d
+from xrpl.core.binarycodec.definitions.field_header import FieldHeader
+from xrpl.core.binarycodec.definitions.field_info import FieldInfo
+
+FIELD_NAME = "JsonTxCompressed"
+_TYPE_NAME = "Blob"
+
+
+def _pick_free_nth_for_type(type_name: str) -> int:
+    """Find an unused `nth` code within the given type so there's no header clash."""
+    type_code = _d._TYPE_ORDINAL_MAP[type_name]
+    taken = {
+        h.field_code for h in _d._FIELD_HEADER_NAME_MAP if h.type_code == type_code
+    }
+    for n in range(1, 255):
+        if n not in taken:
+            return n
+    raise RuntimeError(f"no free nth code for type {type_name}")
+
+
+def register_json_tx_field() -> None:
+    if FIELD_NAME in _d._FIELD_INFO_MAP:
+        return
+    nth = _pick_free_nth_for_type(_TYPE_NAME)
+    info = FieldInfo(
+        nth=nth,
+        is_variable_length_encoded=True,
+        is_serialized=True,
+        is_signing_field=False,
+        type_name=_TYPE_NAME,
+    )
+    header = FieldHeader(_d._TYPE_ORDINAL_MAP[_TYPE_NAME], nth)
+    _d._FIELD_INFO_MAP[FIELD_NAME] = info
+    _d._FIELD_HEADER_NAME_MAP[header] = FIELD_NAME
+
+
+register_json_tx_field()
@@ -0,0 +1,63 @@
+import json
+
+from xrpl.core.keypairs import derive_classic_address, derive_keypair, generate_seed, sign
+
+from json_tx import compress_stream, decompress_stream, pack_wire, unpack_wire
+
+
+def _signed(tx: dict) -> tuple[dict, str, bytes]:
+    seed = generate_seed()
+    pub, priv = derive_keypair(seed)
+    tx = dict(tx)
+    tx["Account"] = derive_classic_address(pub)
+    tx["SigningPubKey"] = pub
+    from json_tx import canonical_json
+    tx_json_str = canonical_json(tx)
+    sig = bytes.fromhex(sign(tx_json_str.encode().hex(), priv))
+    return tx, tx_json_str, sig
+
+
+def test_wire_roundtrip():
+    tx, tx_json_str, sig = _signed({
+        "TransactionType": "Payment",
+        "Destination": "rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn",
+        "Amount": "1000000",
+        "Fee": "12",
+        "Sequence": 1,
+        "Flags": 2147483648,
+    })
+    wire = pack_wire(tx_json_str, sig)
+    recovered_tx, recovered_str, recovered_sig = unpack_wire(wire)
+    assert recovered_str == tx_json_str
+    assert recovered_sig == sig
+    assert recovered_tx == tx
+
+
+def test_stream_roundtrip_direct():
+    tx, tx_json_str, _ = _signed({
+        "TransactionType": "Payment",
+        "Destination": "rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn",
+        "Amount": "2500000",
+        "Fee": "15",
+        "Sequence": 42,
+        "Flags": 0,
+    })
+    stream = compress_stream(tx_json_str, tx_json=tx)
+    rebuilt = decompress_stream(stream, tx)
+    assert rebuilt == tx_json_str
+
+
+def test_raw_fallback_preserved():
+    # Unusual whitespace -> RAW opcodes. Dictionary still reconstructs losslessly.
+    tx = {
+        "TransactionType": "Payment",
+        "Account": "rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh",
+        "Destination": "rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn",
+        "Amount": "1",
+        "Fee": "12",
+        "Sequence": 1,
+        "SigningPubKey": "",
+    }
+    odd = '{  "TransactionType" : "Payment"  }'
+    stream = compress_stream(odd, tx_json=tx)
+    assert decompress_stream(stream, tx) == odd
@@ -0,0 +1,476 @@
+version = 1
+revision = 3
+requires-python = ">=3.10"
+
+[[package]]
+name = "anyio"
+version = "4.13.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "exceptiongroup", marker = "python_full_version < '3.11'" },
+    { name = "idna" },
+    { name = "typing-extensions", marker = "python_full_version < '3.13'" },
+]
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+]
+
+[[package]]
+name = "xrpl-py"
+version = "4.5.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "base58" },
+    { name = "deprecated" },
+    { name = "ecpy" },
+    { name = "httpx" },
+    { name = "pycryptodome" },
+    { name = "types-deprecated" },
+    { name = "typing-extensions" },
+    { name = "websockets" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/51/e7/8faf71e5b9b314d329a13cdc7966ad565a6e52a875adeaee0f778b1b8ef1/xrpl_py-4.5.0.tar.gz", hash = "sha256:3ee25fcb748bdf6afe18aad8f74ba71ffa23bf681409fda3a9eb029e4381fc74", size = 175681, upload-time = "2026-02-12T23:41:52.176Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/1d/3c/65c853f906f5003c06c5e0cbc50e47bac2ecca17957a9d3a3d823efd8c38/xrpl_py-4.5.0-py3-none-any.whl", hash = "sha256:aa4720b5bf8070d8303346111f1095ec9afe13abdf49b2dc4b988d28ebc227ca", size = 314897, upload-time = "2026-02-12T23:41:50.609Z" },
+]
@@ -0,0 +1,58 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2012, 2013 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.
+*/
+//==============================================================================
+
+#include <xrpl/basics/CountedObject.h>
+#include <algorithm>
+#include <type_traits>
+
+namespace ripple {
+
+CountedObjects&
+CountedObjects::getInstance() noexcept
+{
+    static CountedObjects instance;
+
+    return instance;
+}
+
+CountedObjects::CountedObjects() noexcept : m_count(0), m_head(nullptr)
+{
+}
+
+CountedObjects::List
+CountedObjects::getCounts(int minimumThreshold) const
+{
+    List counts;
+
+    // When other operations are concurrent, the count
+    // might be temporarily less than the actual count.
+    counts.reserve(m_count.load());
+
+    for (auto* ctr = m_head.load(); ctr != nullptr; ctr = ctr->getNext())
+    {
+        if (ctr->getCount() >= minimumThreshold)
+            counts.emplace_back(ctr->getName(), ctr->getCount());
+    }
+
+    std::sort(counts.begin(), counts.end());
+
+    return counts;
+}
+
+}  // namespace ripple
@@ -22,14 +22,7 @@
 #include <xrpl/beast/net/IPAddressConversion.h>
 #include <xrpl/beast/net/IPEndpoint.h>
 #include <xrpl/beast/utility/instrumentation.h>
-
-#include <boost/asio/bind_executor.hpp>
-#include <boost/asio/error.hpp>
-#include <boost/asio/io_context.hpp>
-#include <boost/asio/ip/tcp.hpp>
-#include <boost/system/detail/error_code.hpp>
-
-#include <algorithm>
+#include <boost/asio.hpp>
 #include <atomic>
 #include <condition_variable>
 #include <deque>
@@ -117,8 +110,8 @@ public:

    beast::Journal m_journal;

-    boost::asio::io_context& m_io_context;
-    boost::asio::strand<boost::asio::io_context::executor_type> m_strand;
+    boost::asio::io_service& m_io_service;
+    boost::asio::io_service::strand m_strand;
    boost::asio::ip::tcp::resolver m_resolver;

    std::condition_variable m_cv;
@@ -148,12 +141,12 @@ public:
    std::deque<Work> m_work;

    ResolverAsioImpl(
-        boost::asio::io_context& io_context,
+        boost::asio::io_service& io_service,
        beast::Journal journal)
        : m_journal(journal)
-        , m_io_context(io_context)
-        , m_strand(boost::asio::make_strand(io_context))
-        , m_resolver(io_context)
+        , m_io_service(io_service)
+        , m_strand(io_service)
+        , m_resolver(io_service)
        , m_asyncHandlersCompleted(true)
        , m_stop_called(false)
        , m_stopped(true)
@@ -209,14 +202,8 @@ public:
    {
        if (m_stop_called.exchange(true) == false)
        {
-            boost::asio::dispatch(
-                m_io_context,
-                boost::asio::bind_executor(
-                    m_strand,
-                    std::bind(
-                        &ResolverAsioImpl::do_stop,
-                        this,
-                        CompletionCounter(this))));
+            m_io_service.dispatch(m_strand.wrap(std::bind(
+                &ResolverAsioImpl::do_stop, this, CompletionCounter(this))));

            JLOG(m_journal.debug()) << "Queued a stop request";
        }
@@ -247,16 +234,12 @@ public:

        // TODO NIKB use rvalue references to construct and move
        //           reducing cost.
-        boost::asio::dispatch(
-            m_io_context,
-            boost::asio::bind_executor(
-                m_strand,
-                std::bind(
-                    &ResolverAsioImpl::do_resolve,
-                    this,
-                    names,
-                    handler,
-                    CompletionCounter(this))));
+        m_io_service.dispatch(m_strand.wrap(std::bind(
+            &ResolverAsioImpl::do_resolve,
+            this,
+            names,
+            handler,
+            CompletionCounter(this))));
    }

    //-------------------------------------------------------------------------
@@ -282,20 +265,19 @@ public:
        std::string name,
        boost::system::error_code const& ec,
        HandlerType handler,
-        boost::asio::ip::tcp::resolver::results_type results,
+        boost::asio::ip::tcp::resolver::iterator iter,
        CompletionCounter)
    {
        if (ec == boost::asio::error::operation_aborted)
            return;

        std::vector<beast::IP::Endpoint> addresses;
-        auto iter = results.begin();

        // If we get an error message back, we don't return any
        // results that we may have gotten.
        if (!ec)
        {
-            while (iter != results.end())
+            while (iter != boost::asio::ip::tcp::resolver::iterator())
            {
                addresses.push_back(
                    beast::IPAddressConversion::from_asio(*iter));
@@ -305,14 +287,8 @@ public:

        handler(name, addresses);

-        boost::asio::post(
-            m_io_context,
-            boost::asio::bind_executor(
-                m_strand,
-                std::bind(
-                    &ResolverAsioImpl::do_work,
-                    this,
-                    CompletionCounter(this))));
+        m_io_service.post(m_strand.wrap(std::bind(
+            &ResolverAsioImpl::do_work, this, CompletionCounter(this))));
    }

    HostAndPort
@@ -393,21 +369,16 @@ public:
        {
            JLOG(m_journal.error()) << "Unable to parse '" << name << "'";

-            boost::asio::post(
-                m_io_context,
-                boost::asio::bind_executor(
-                    m_strand,
-                    std::bind(
-                        &ResolverAsioImpl::do_work,
-                        this,
-                        CompletionCounter(this))));
+            m_io_service.post(m_strand.wrap(std::bind(
+                &ResolverAsioImpl::do_work, this, CompletionCounter(this))));

            return;
        }

+        boost::asio::ip::tcp::resolver::query query(host, port);
+
        m_resolver.async_resolve(
-            host,
-            port,
+            query,
            std::bind(
                &ResolverAsioImpl::do_finish,
                this,
@@ -438,14 +409,10 @@ public:

            if (m_work.size() > 0)
            {
-                boost::asio::post(
-                    m_io_context,
-                    boost::asio::bind_executor(
-                        m_strand,
-                        std::bind(
-                            &ResolverAsioImpl::do_work,
-                            this,
-                            CompletionCounter(this))));
+                m_io_service.post(m_strand.wrap(std::bind(
+                    &ResolverAsioImpl::do_work,
+                    this,
+                    CompletionCounter(this))));
            }
        }
    }
@@ -454,9 +421,9 @@ public:
 //-----------------------------------------------------------------------------

 std::unique_ptr<ResolverAsio>
-ResolverAsio::New(boost::asio::io_context& io_context, beast::Journal journal)
+ResolverAsio::New(boost::asio::io_service& io_service, beast::Journal journal)
 {
-    return std::make_unique<ResolverAsioImpl>(io_context, journal);
+    return std::make_unique<ResolverAsioImpl>(io_service, journal);
 }

 //-----------------------------------------------------------------------------
@@ -1,101 +0,0 @@
-//------------------------------------------------------------------------------
-/*
-    This file is part of rippled: https://github.com/ripple/rippled
-    Copyright (c) 2025 XRPL Labs
-
-    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.
-*/
-//==============================================================================
-
-#include <xrpl/basics/UTF8.h>
-
-namespace ripple {
-
-bool
-isValidUTF8(Slice const& s) noexcept
-{
-    std::size_t const size = s.size();
-
-    // Markus Kuhn's utf8_check.c
-    // (https://www.cl.cam.ac.uk/~mgk25/ucs/utf8_check.c), the decoder
-    // URIToken has always used, with one change: each branch establishes
-    // that the whole sequence is present before reading any continuation
-    // byte, so a truncated tail is invalid rather than an out-of-bounds read.
-    std::size_t i = 0;
-    while (i < size)
-    {
-        std::uint8_t const c0 = s[i];
-
-        if (c0 < 0x80)
-        {
-            // 0xxxxxxx
-            ++i;
-            continue;
-        }
-
-        if ((c0 & 0xE0) == 0xC0)
-        {
-            // 110xxxxx 10xxxxxx
-            if (size - i < 2)
-                return false;
-            if ((s[i + 1] & 0xC0) != 0x80)
-                return false;
-            if ((c0 & 0xFE) == 0xC0)  // overlong
-                return false;
-            i += 2;
-            continue;
-        }
-
-        if ((c0 & 0xF0) == 0xE0)
-        {
-            // 1110xxxx 10xxxxxx 10xxxxxx
-            if (size - i < 3)
-                return false;
-            std::uint8_t const c1 = s[i + 1];
-            if ((c1 & 0xC0) != 0x80 || (s[i + 2] & 0xC0) != 0x80)
-                return false;
-            if (c0 == 0xE0 && (c1 & 0xE0) == 0x80)  // overlong
-                return false;
-            if (c0 == 0xED && (c1 & 0xE0) == 0xA0)  // UTF-16 surrogate
-                return false;
-            if (c0 == 0xEF && c1 == 0xBF &&
-                (s[i + 2] & 0xFE) == 0xBE)  // U+FFFE or U+FFFF
-                return false;
-            i += 3;
-            continue;
-        }
-
-        if ((c0 & 0xF8) == 0xF0)
-        {
-            // 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
-            if (size - i < 4)
-                return false;
-            std::uint8_t const c1 = s[i + 1];
-            if ((c1 & 0xC0) != 0x80 || (s[i + 2] & 0xC0) != 0x80 ||
-                (s[i + 3] & 0xC0) != 0x80)
-                return false;
-            if (c0 == 0xF0 && (c1 & 0xF0) == 0x80)  // overlong
-                return false;
-            if (c0 > 0xF4 || (c0 == 0xF4 && c1 > 0x8F))  // > U+10FFFF
-                return false;
-            i += 4;
-            continue;
-        }
-
-        // Stray continuation byte or 0xF8..0xFF.
-        return false;
-    }
-    return true;
-}
-
-}  // namespace ripple
@@ -25,6 +25,19 @@

 namespace ripple {

+namespace detail {
+
+[[noreturn]] void
+accessViolation() noexcept
+{
+    // dereference memory location zero
+    int volatile* j = 0;
+    (void)*j;
+    std::abort();
+}
+
+}  // namespace detail
+
 void
 LogThrow(std::string const& title)
 {
@@ -42,7 +55,7 @@ LogicError(std::string const& s) noexcept
    // here.
    // For the above reasons, we want this contract to stand out.
    UNREACHABLE("LogicError", {{"message", s}});
-    std::abort();
+    detail::accessViolation();
 }

 }  // namespace ripple
@@ -33,7 +33,7 @@
 namespace beast::detail {

 inline void
-setCurrentThreadNameImpl(char const* name)
+setCurrentThreadNameImpl(std::string_view name)
 {
 #if DEBUG && BOOST_COMP_MSVC
    // This technique is documented by Microsoft and works for all versions
@@ -54,7 +54,7 @@ setCurrentThreadNameImpl(char const* name)
    THREADNAME_INFO ni;

    ni.dwType = 0x1000;
-    ni.szName = name;
+    ni.szName = name.data();
    ni.dwThreadID = GetCurrentThreadId();
    ni.dwFlags = 0;

@@ -81,9 +81,9 @@ setCurrentThreadNameImpl(char const* name)
 namespace beast::detail {

 inline void
-setCurrentThreadNameImpl(char const* name)
+setCurrentThreadNameImpl(std::string_view name)
 {
-    pthread_setname_np(name);
+    pthread_setname_np(name.data());
 }

 }  // namespace beast::detail
@@ -95,9 +95,9 @@ setCurrentThreadNameImpl(char const* name)
 namespace beast::detail {

 inline void
-setCurrentThreadNameImpl(char const* name)
+setCurrentThreadNameImpl(std::string_view name)
 {
-    pthread_setname_np(pthread_self(), name);
+    pthread_setname_np(pthread_self(), name.data());
 }

 }  // namespace beast::detail
@@ -119,7 +119,7 @@ void
 setCurrentThreadName(std::string_view name)
 {
    detail::threadName = name;
-    detail::setCurrentThreadNameImpl(detail::threadName.c_str());
+    detail::setCurrentThreadNameImpl(name);
 }

 }  // namespace beast
@@ -26,24 +26,10 @@
 #include <xrpl/beast/insight/StatsDCollector.h>
 #include <xrpl/beast/net/IPAddressConversion.h>
 #include <xrpl/beast/utility/instrumentation.h>
-
-#include <boost/asio/basic_waitable_timer.hpp>
-#include <boost/asio/bind_executor.hpp>
-#include <boost/asio/buffer.hpp>
-#include <boost/asio/error.hpp>
-#include <boost/asio/executor_work_guard.hpp>
-#include <boost/asio/io_context.hpp>
-#include <boost/asio/ip/udp.hpp>
-#include <boost/asio/strand.hpp>
-#include <boost/system/detail/error_code.hpp>
-
 #include <boost/asio/ip/tcp.hpp>
-#include <chrono>
 #include <climits>
-#include <cstddef>
 #include <deque>
 #include <functional>
-#include <iostream>
 #include <mutex>
 #include <optional>
 #include <set>
@@ -237,11 +223,9 @@ private:
    Journal m_journal;
    IP::Endpoint m_address;
    std::string m_prefix;
-    boost::asio::io_context m_io_context;
-    std::optional<boost::asio::executor_work_guard<
-        boost::asio::io_context::executor_type>>
-        m_work;
-    boost::asio::strand<boost::asio::io_context::executor_type> m_strand;
+    boost::asio::io_service m_io_service;
+    std::optional<boost::asio::io_service::work> m_work;
+    boost::asio::io_service::strand m_strand;
    boost::asio::basic_waitable_timer<std::chrono::steady_clock> m_timer;
    boost::asio::ip::udp::socket m_socket;
    std::deque<std::string> m_data;
@@ -265,24 +249,18 @@ public:
        : m_journal(journal)
        , m_address(address)
        , m_prefix(prefix)
-        , m_work(boost::asio::make_work_guard(m_io_context))
-        , m_strand(boost::asio::make_strand(m_io_context))
-        , m_timer(m_io_context)
-        , m_socket(m_io_context)
+        , m_work(std::ref(m_io_service))
+        , m_strand(m_io_service)
+        , m_timer(m_io_service)
+        , m_socket(m_io_service)
        , m_thread(&StatsDCollectorImp::run, this)
    {
    }

    ~StatsDCollectorImp() override
    {
-        try
-        {
-            m_timer.cancel();
-        }
-        catch (boost::system::system_error const&)
-        {
-            // ignored
-        }
+        boost::system::error_code ec;
+        m_timer.cancel(ec);

        m_work.reset();
        m_thread.join();
@@ -341,10 +319,10 @@ public:

    //--------------------------------------------------------------------------

-    boost::asio::io_context&
-    get_io_context()
+    boost::asio::io_service&
+    get_io_service()
    {
-        return m_io_context;
+        return m_io_service;
    }

    std::string const&
@@ -362,14 +340,8 @@ public:
    void
    post_buffer(std::string&& buffer)
    {
-        boost::asio::dispatch(
-            m_io_context,
-            boost::asio::bind_executor(
-                m_strand,
-                std::bind(
-                    &StatsDCollectorImp::do_post_buffer,
-                    this,
-                    std::move(buffer))));
+        m_io_service.dispatch(m_strand.wrap(std::bind(
+            &StatsDCollectorImp::do_post_buffer, this, std::move(buffer))));
    }

    // The keepAlive parameter makes sure the buffers sent to
@@ -399,7 +371,7 @@ public:
        for (auto const& buffer : buffers)
        {
            std::string const s(
-                static_cast<char const*>(buffer.data()),
+                boost::asio::buffer_cast<char const*>(buffer),
                boost::asio::buffer_size(buffer));
            std::cerr << s;
        }
@@ -469,7 +441,7 @@ public:
    set_timer()
    {
        using namespace std::chrono_literals;
-        m_timer.expires_after(1s);
+        m_timer.expires_from_now(1s);
        m_timer.async_wait(std::bind(
            &StatsDCollectorImp::on_timer, this, std::placeholders::_1));
    }
@@ -511,13 +483,13 @@ public:

        set_timer();

-        m_io_context.run();
+        m_io_service.run();

        m_socket.shutdown(boost::asio::ip::udp::socket::shutdown_send, ec);

        m_socket.close();

-        m_io_context.poll();
+        m_io_service.poll();
    }
 };

@@ -560,12 +532,10 @@ StatsDCounterImpl::~StatsDCounterImpl()
 void
 StatsDCounterImpl::increment(CounterImpl::value_type amount)
 {
-    boost::asio::dispatch(
-        m_impl->get_io_context(),
-        std::bind(
-            &StatsDCounterImpl::do_increment,
-            std::static_pointer_cast<StatsDCounterImpl>(shared_from_this()),
-            amount));
+    m_impl->get_io_service().dispatch(std::bind(
+        &StatsDCounterImpl::do_increment,
+        std::static_pointer_cast<StatsDCounterImpl>(shared_from_this()),
+        amount));
 }

 void
@@ -607,12 +577,10 @@ StatsDEventImpl::StatsDEventImpl(
 void
 StatsDEventImpl::notify(EventImpl::value_type const& value)
 {
-    boost::asio::dispatch(
-        m_impl->get_io_context(),
-        std::bind(
-            &StatsDEventImpl::do_notify,
-            std::static_pointer_cast<StatsDEventImpl>(shared_from_this()),
-            value));
+    m_impl->get_io_service().dispatch(std::bind(
+        &StatsDEventImpl::do_notify,
+        std::static_pointer_cast<StatsDEventImpl>(shared_from_this()),
+        value));
 }

 void
@@ -642,23 +610,19 @@ StatsDGaugeImpl::~StatsDGaugeImpl()
 void
 StatsDGaugeImpl::set(GaugeImpl::value_type value)
 {
-    boost::asio::dispatch(
-        m_impl->get_io_context(),
-        std::bind(
-            &StatsDGaugeImpl::do_set,
-            std::static_pointer_cast<StatsDGaugeImpl>(shared_from_this()),
-            value));
+    m_impl->get_io_service().dispatch(std::bind(
+        &StatsDGaugeImpl::do_set,
+        std::static_pointer_cast<StatsDGaugeImpl>(shared_from_this()),
+        value));
 }

 void
 StatsDGaugeImpl::increment(GaugeImpl::difference_type amount)
 {
-    boost::asio::dispatch(
-        m_impl->get_io_context(),
-        std::bind(
-            &StatsDGaugeImpl::do_increment,
-            std::static_pointer_cast<StatsDGaugeImpl>(shared_from_this()),
-            amount));
+    m_impl->get_io_service().dispatch(std::bind(
+        &StatsDGaugeImpl::do_increment,
+        std::static_pointer_cast<StatsDGaugeImpl>(shared_from_this()),
+        amount));
 }

 void
@@ -734,12 +698,10 @@ StatsDMeterImpl::~StatsDMeterImpl()
 void
 StatsDMeterImpl::increment(MeterImpl::value_type amount)
 {
-    boost::asio::dispatch(
-        m_impl->get_io_context(),
-        std::bind(
-            &StatsDMeterImpl::do_increment,
-            std::static_pointer_cast<StatsDMeterImpl>(shared_from_this()),
-            amount));
+    m_impl->get_io_service().dispatch(std::bind(
+        &StatsDMeterImpl::do_increment,
+        std::static_pointer_cast<StatsDMeterImpl>(shared_from_this()),
+        amount));
 }

 void
@@ -28,11 +28,11 @@ namespace IP {
 bool
 is_private(AddressV4 const& addr)
 {
-    return ((addr.to_uint() & 0xff000000) ==
+    return ((addr.to_ulong() & 0xff000000) ==
            0x0a000000) ||  // Prefix /8,    10.  #.#.#
-        ((addr.to_uint() & 0xfff00000) ==
+        ((addr.to_ulong() & 0xfff00000) ==
         0xac100000) ||  // Prefix /12   172. 16.#.# - 172.31.#.#
-        ((addr.to_uint() & 0xffff0000) ==
+        ((addr.to_ulong() & 0xffff0000) ==
         0xc0a80000) ||  // Prefix /16   192.168.#.#
        addr.is_loopback();
 }
@@ -47,7 +47,7 @@ char
 get_class(AddressV4 const& addr)
 {
    static char const* table = "AAAABBCD";
-    return table[(addr.to_uint() & 0xE0000000) >> 29];
+    return table[(addr.to_ulong() & 0xE0000000) >> 29];
 }

 }  // namespace IP
@@ -20,8 +20,6 @@
 #include <xrpl/beast/net/IPAddressV4.h>
 #include <xrpl/beast/net/IPAddressV6.h>

-#include <boost/asio/ip/address_v4.hpp>
-
 namespace beast {
 namespace IP {

@@ -29,18 +27,15 @@ bool
 is_private(AddressV6 const& addr)
 {
    return (
-        addr.is_link_local() ||                   // fe80::/10
-        addr.is_loopback() ||                     // ::1
-        ((addr.to_bytes()[0] & 0xfe) == 0xfc) ||  // fc00::/7 (all ULA)
-        (addr.is_v4_mapped() &&
-         is_private(boost::asio::ip::make_address_v4(
-             boost::asio::ip::v4_mapped, addr))));
+        (addr.to_bytes()[0] & 0xfd) ||  // TODO  fc00::/8 too ?
+        (addr.is_v4_mapped() && is_private(addr.to_v4())));
 }

 bool
 is_public(AddressV6 const& addr)
 {
-    return !is_private(addr) && !addr.is_multicast() && !addr.is_unspecified();
+    // TODO is this correct?
+    return !is_private(addr) && !addr.is_multicast();
 }

 }  // namespace IP
@@ -18,19 +18,7 @@
 //==============================================================================

 #include <xrpl/beast/net/IPEndpoint.h>
-
-#include <boost/algorithm/string/trim.hpp>
-#include <boost/asio/ip/address.hpp>
-#include <boost/asio/ip/address_v4.hpp>
-#include <boost/system/detail/error_code.hpp>
-
 #include <boost/algorithm/string.hpp>
-#include <cctype>
-#include <ios>
-#include <istream>
-#include <optional>
-#include <sstream>
-#include <string>

 namespace beast {
 namespace IP {
@@ -169,7 +157,7 @@ operator>>(std::istream& is, Endpoint& endpoint)
    }

    boost::system::error_code ec;
-    auto addr = boost::asio::ip::make_address(addrStr, ec);
+    auto addr = Address::from_string(addrStr, ec);
    if (ec)
    {
        is.setstate(std::ios_base::failbit);
@@ -1,180 +0,0 @@
-//------------------------------------------------------------------------------
-/*
-    This file is part of rippled: https://github.com/ripple/rippled
-    Copyright (c) 2025 XRPL Labs
-
-    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.
-*/
-//==============================================================================
-
-#include <xrpl/basics/Slice.h>
-#include <xrpl/basics/UTF8.h>
-#include <xrpl/protocol/AppLoader.h>
-#include <xrpl/protocol/Protocol.h>
-
-#include <string_view>
-
-namespace ripple {
-namespace appLoader {
-
-namespace {
-
-// HTML "ASCII whitespace": TAB, LF, FF, CR, SPACE.
-inline bool
-isSpace(std::uint8_t c) noexcept
-{
-    return c == 0x09 || c == 0x0A || c == 0x0C || c == 0x0D || c == 0x20;
-}
-
-inline std::uint8_t
-lower(std::uint8_t c) noexcept
-{
-    return (c >= 'A' && c <= 'Z') ? static_cast<std::uint8_t>(c + 32) : c;
-}
-
-// Case-insensitive match of lower-case `lit` at `pos`; never reads past
-// the end.
-bool
-matchAt(
-    std::uint8_t const* data,
-    std::size_t size,
-    std::size_t pos,
-    std::string_view lit) noexcept
-{
-    if (pos > size || size - pos < lit.size())
-        return false;
-    for (std::size_t i = 0; i < lit.size(); ++i)
-        if (lower(data[pos + i]) != static_cast<std::uint8_t>(lit[i]))
-            return false;
-    return true;
-}
-
-std::size_t
-findFrom(
-    std::uint8_t const* data,
-    std::size_t size,
-    std::size_t from,
-    std::string_view lit) noexcept
-{
-    for (std::size_t i = from; i + lit.size() <= size; ++i)
-        if (matchAt(data, size, i, lit))
-            return i;
-    return size;
-}
-
-// So that "<htmlish>" is not mistaken for "<html>".
-inline bool
-isTagNameEnd(std::uint8_t c) noexcept
-{
-    return isSpace(c) || c == '>' || c == '/';
-}
-
-}  // namespace
-
-Result
-validate(std::uint8_t const* data, std::size_t size)
-{
-    if (size == 0 || data == nullptr)
-        return Result::empty;
-    if (size > maxAppLoaderLength)
-        return Result::tooLarge;
-    if (!isValidUTF8(Slice(data, size)))
-        return Result::badUTF8;
-    for (std::size_t i = 0; i < size; ++i)
-        if (!isSpace(data[i]) && (data[i] < 0x20 || data[i] == 0x7F))
-            return Result::badControlChar;
-
-    std::size_t begin = 0;
-    if (size >= 3 && data[0] == 0xEF && data[1] == 0xBB && data[2] == 0xBF)
-        begin = 3;
-    while (begin < size && isSpace(data[begin]))
-        ++begin;
-    if (begin == size)
-        return Result::empty;
-
-    // "<!doctype" followed by whitespace is the only doctype form any
-    // browser treats as standards-mode HTML.
-    bool const doctype = matchAt(data, size, begin, "<!doctype") &&
-        begin + 9 < size && isSpace(data[begin + 9]);
-    bool const html = matchAt(data, size, begin, "<html") && begin + 5 < size &&
-        isTagNameEnd(data[begin + 5]);
-    if (!doctype && !html)
-        return Result::noDoctype;
-
-    std::size_t open = begin;
-    for (;;)
-    {
-        open = findFrom(data, size, open, "<html");
-        if (open == size)
-            return Result::noHtmlElement;
-        if (open + 5 < size && isTagNameEnd(data[open + 5]))
-            break;
-        ++open;
-    }
-
-    // The LAST well-formed </html>, so that one quoted inside a script
-    // does not shadow the real one. Linear: each probe resumes one past
-    // the previous match.
-    // closeEnd == 0 means none found: a well-formed </html> always ends
-    // past position 0.
-    std::size_t closeEnd = 0;
-    for (std::size_t probe = open;;)
-    {
-        std::size_t const found = findFrom(data, size, probe, "</html");
-        if (found == size)
-            break;
-        std::size_t j = found + 6;
-        while (j < size && isSpace(data[j]))
-            ++j;
-        if (j < size && data[j] == '>')
-            closeEnd = j + 1;
-        probe = found + 1;
-    }
-    if (closeEnd == 0)
-        return Result::unclosed;
-
-    for (std::size_t i = closeEnd; i < size; ++i)
-        if (!isSpace(data[i]))
-            return Result::trailingGarbage;
-    return Result::ok;
-}
-
-char const*
-to_string(Result r)
-{
-    switch (r)
-    {
-        case Result::ok:
-            return "ok";
-        case Result::empty:
-            return "empty document";
-        case Result::tooLarge:
-            return "document exceeds maxAppLoaderLength";
-        case Result::badUTF8:
-            return "malformed UTF-8";
-        case Result::badControlChar:
-            return "forbidden control character";
-        case Result::noDoctype:
-            return "does not open with a doctype or <html> tag";
-        case Result::noHtmlElement:
-            return "missing <html> start tag";
-        case Result::unclosed:
-            return "missing or misplaced </html> end tag";
-        case Result::trailingGarbage:
-            return "content after </html>";
-    }
-    return "unknown";
-}
-
-}  // namespace appLoader
-}  // namespace ripple
@@ -56,9 +56,9 @@ getVersionString()
        (versionString == std::string("0.") + std::string("0.0") ||
         versionString == std::string("0.0.0+DEBUG")))
    {
-        std::string y = std::string(&__DATE__[7]);
+        std::string y = std::string(__DATE__ + 7);
        std::string d = std::string(
-            &__DATE__[4 + (__DATE__[4] == ' ' ? 1 : 0)],
+            __DATE__ + 4 + (__DATE__[4] == ' ' ? 1 : 0),
            __DATE__[4] == ' ' ? 1 : 2);
        std::string m;
        switch (__DATE__[0])
@@ -81,7 +81,6 @@ enum class LedgerNameSpace : std::uint16_t {
    IMPORT_VLSEQ = 'I',
    UNL_REPORT = 'R',
    CRON = 'L',
-    APP_LOADER = 'W',
    AMM = 'A',
    BRIDGE = LEDGER_NAMESPACE2(0x01, 'H'),
    XCHAIN_CLAIM_ID = 'Q',
@@ -90,11 +89,8 @@ enum class LedgerNameSpace : std::uint16_t {
    ORACLE = LEDGER_NAMESPACE2(0x01, 'R'),
    MPTOKEN_ISSUANCE = '~',
    MPTOKEN = 't',
-    MANIFEST = 'M',
-    MANIFEST_DIR = LEDGER_NAMESPACE2(0x01, 'M'),
    CREDENTIAL = LEDGER_NAMESPACE2(0x01, 'D'),
    PERMISSIONED_DOMAIN = 'm',
-    RANDOM = 0x526E,  // Rn

    // No longer used or supported. Left here to reserve the space
    // to avoid accidental reuse.
@@ -279,13 +275,6 @@ UNLReport() noexcept
    return ret;
 }

-Keylet const&
-random() noexcept
-{
-    static Keylet const ret{ltRANDOM, indexHash(LedgerNameSpace::RANDOM)};
-    return ret;
-}
-
 Keylet
 book_t::operator()(Book const& b) const
 {
@@ -623,12 +612,6 @@ did(AccountID const& account) noexcept
    return {ltDID, indexHash(LedgerNameSpace::DID, account)};
 }

-Keylet
-appLoader(AccountID const& account) noexcept
-{
-    return {ltAPP_LOADER, indexHash(LedgerNameSpace::APP_LOADER, account)};
-}
-
 Keylet
 oracle(AccountID const& account, std::uint32_t const& documentID) noexcept
 {
@@ -687,20 +670,6 @@ permissionedDomain(uint256 const& domainID) noexcept
    return {ltPERMISSIONED_DOMAIN, domainID};
 }

-Keylet
-manifest(PublicKey const& pk) noexcept
-{
-    return {ltMANIFEST, indexHash(LedgerNameSpace::MANIFEST, pk.slice())};
-}
-
-Keylet const&
-manifestDir() noexcept
-{
-    static Keylet const ret{
-        ltDIR_NODE, indexHash(LedgerNameSpace::MANIFEST_DIR)};
-    return ret;
-}
-
 }  // namespace keylet

 }  // namespace ripple
@@ -143,14 +143,6 @@ InnerObjectFormats::InnerObjectFormats()
            {sfAccount, soeOPTIONAL},
        });

-    add(sfRandomDigestEntry.jsonName,
-        sfRandomDigestEntry.getCode(),
-        {
-            {sfPublicKey, soeREQUIRED},
-            {sfNextRandomDigest, soeREQUIRED},
-            {sfLedgerSequence, soeREQUIRED},
-        });
-
    add(sfAmountEntry.jsonName,
        sfAmountEntry.getCode(),
        {
@@ -0,0 +1,187 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2025 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.
+*/
+//==============================================================================
+
+#include <xrpl/protocol/JsonTx.h>
+
+#include <xrpl/basics/StringUtilities.h>
+#include <xrpl/basics/strHex.h>
+#include <xrpl/json/json_reader.h>
+#include <xrpl/protocol/PublicKey.h>
+#include <xrpl/protocol/SField.h>
+#include <xrpl/protocol/STBase.h>
+#include <xrpl/protocol/STBlob.h>
+#include <xrpl/protocol/STObject.h>
+#include <xrpl/protocol/STParsedJSON.h>
+#include <xrpl/protocol/Serializer.h>
+#include <xrpl/protocol/digest.h>
+#include <xrpl/protocol/jss.h>
+
+#include <algorithm>
+#include <initializer_list>
+#include <string>
+#include <vector>
+
+namespace ripple {
+namespace jsonTx {
+
+namespace {
+
+/** Canonical serialization of `obj` with the given fields removed.
+    STObject's own serialization already sorts by field code, but we
+    have to walk the fields ourselves to skip the json-tx wrapper
+    entries rather than mutate the object. */
+Blob
+canonicalSerialization(
+    STObject const& obj,
+    std::initializer_list<SField const*> skip)
+{
+    std::vector<STBase const*> fields;
+    for (auto const& entry : obj)
+    {
+        if (entry.getSType() == STI_NOTPRESENT)
+            continue;
+        bool skipped = false;
+        for (SField const* s : skip)
+            if (entry.getFName() == *s)
+            {
+                skipped = true;
+                break;
+            }
+        if (!skipped)
+            fields.push_back(&entry);
+    }
+    std::sort(
+        fields.begin(), fields.end(), [](STBase const* a, STBase const* b) {
+            return a->getFName().fieldCode < b->getFName().fieldCode;
+        });
+
+    Serializer s;
+    for (STBase const* f : fields)
+    {
+        f->addFieldID(s);
+        f->add(s);
+        auto const sType = f->getSType();
+        if (sType == STI_ARRAY || sType == STI_OBJECT)
+            s.addFieldID(sType, 1);
+    }
+    return s.getData();
+}
+
+}  // namespace
+
+bool
+hasBody(STObject const& obj) noexcept
+{
+    try
+    {
+        return obj.isFieldPresent(sfJsonTxBody);
+    }
+    catch (...)
+    {
+        return false;
+    }
+}
+
+Slice
+body(STObject const& obj)
+{
+    if (!obj.isFieldPresent(sfJsonTxBody))
+        return Slice{};
+    // peekAtField gives us a view into the STObject's owned storage;
+    // STBlob::value() returns a Slice over that storage directly.
+    auto const& field = obj.peekAtField(sfJsonTxBody);
+    return static_cast<STBlob const&>(field).value();
+}
+
+uint256
+bodyHash(STObject const& obj)
+{
+    auto const s = body(obj);
+    if (s.empty())
+        return uint256{};
+    return sha512Half(s);
+}
+
+Expected<void, std::string>
+checkSignature(STTx const& stx)
+{
+    if (!hasBody(stx))
+        return Unexpected<std::string>("JsonTxBody field is missing.");
+
+    auto const bodySlice = body(stx);
+    if (bodySlice.empty())
+        return Unexpected<std::string>("JsonTxBody is empty.");
+
+    if (!stx.isFieldPresent(sfSigningPubKey))
+        return Unexpected<std::string>("SigningPubKey is missing.");
+
+    Blob const spk = stx.getFieldVL(sfSigningPubKey);
+    if (!publicKeyType(makeSlice(spk)))
+        return Unexpected<std::string>("SigningPubKey is not a valid key.");
+
+    if (!stx.isFieldPresent(sfTxnSignature))
+        return Unexpected<std::string>("TxnSignature is missing.");
+
+    Blob const sig = stx.getFieldVL(sfTxnSignature);
+    if (sig.empty())
+        return Unexpected<std::string>("TxnSignature is empty.");
+
+    if (!verify(PublicKey(makeSlice(spk)), bodySlice, makeSlice(sig)))
+        return Unexpected<std::string>(
+            "Signature over JsonTxBody failed verification.");
+
+    return {};
+}
+
+Expected<void, std::string>
+checkStructuralEquivalence(STTx const& stx)
+{
+    if (!hasBody(stx))
+        return Unexpected<std::string>("JsonTxBody field is missing.");
+
+    auto const bodySlice = body(stx);
+    if (bodySlice.empty())
+        return Unexpected<std::string>("JsonTxBody is empty.");
+
+    std::string const bodyStr(
+        reinterpret_cast<char const*>(bodySlice.data()), bodySlice.size());
+
+    Json::Value parsed;
+    Json::Reader reader;
+    if (!reader.parse(bodyStr, parsed) || !parsed.isObject())
+        return Unexpected<std::string>(
+            "JsonTxBody is not a valid JSON object.");
+
+    STParsedJSONObject parsedObj("JsonTxBody", parsed);
+    if (!parsedObj.object)
+        return Unexpected<std::string>(
+            "JsonTxBody does not parse into a valid STObject: " +
+            (parsedObj.error.isMember(jss::error_message)
+                 ? parsedObj.error[jss::error_message].asString()
+                 : std::string("unknown parse error")));
+
+    // The json-tx wrapper fields (TxnSignature, JsonTxBody) are excluded
+    // from both sides: TxnSignature covers the body bytes (not the
+    // binary), and JsonTxBody is the body itself.
+    std::initializer_list<SField const*> const skip{
+        &sfTxnSignature, &sfJsonTxBody};
+
+    if (canonicalSerialization(stx, skip) !=
+        canonicalSerialization(*parsedObj.object, skip))
+        return Unexpected<std::string>(
+            "JsonTxBody content does not match the structural fields "
+            "of the transaction.");
+
+    return {};
+}
+
+}  // namespace jsonTx
+}  // namespace ripple
@@ -171,6 +171,53 @@ ed25519Canonical(Slice const& sig)
    return std::lexicographical_compare(S, S + 32, Order, Order + 32);
 }

+//------------------------------------------------------------------------------
+
+PublicKey::PublicKey(Slice const& slice)
+{
+    if (slice.size() < size_)
+        LogicError(
+            "PublicKey::PublicKey - Input slice cannot be an undersized "
+            "buffer");
+
+    if (!publicKeyType(slice))
+        LogicError("PublicKey::PublicKey invalid type");
+    std::memcpy(buf_, slice.data(), size_);
+}
+
+PublicKey::PublicKey(PublicKey const& other)
+{
+    std::memcpy(buf_, other.buf_, size_);
+}
+
+PublicKey&
+PublicKey::operator=(PublicKey const& other)
+{
+    if (this != &other)
+    {
+        std::memcpy(buf_, other.buf_, size_);
+    }
+
+    return *this;
+}
+
+//------------------------------------------------------------------------------
+
+std::optional<KeyType>
+publicKeyType(Slice const& slice)
+{
+    if (slice.size() == 33)
+    {
+        if (slice[0] == 0xED)
+            return KeyType::ed25519;
+
+        if (slice[0] == 0x02 || slice[0] == 0x03)
+            return KeyType::secp256k1;
+    }
+
+    return std::nullopt;
+}
+
 bool
 verifyDigest(
    PublicKey const& publicKey,
@@ -961,7 +961,7 @@ amountFromJson(SField const& name, Json::Value const& v)

    bool const native = !currencyOrMPTID.isString() ||
        currencyOrMPTID.asString().empty() ||
-        (currencyOrMPTID.asString() == systemCurrencyCode);
+        (currencyOrMPTID.asString() == systemCurrencyCode());

    if (native)
    {
@@ -25,6 +25,7 @@
 #include <xrpl/json/to_string.h>
 #include <xrpl/protocol/Feature.h>
 #include <xrpl/protocol/HashPrefix.h>
+#include <xrpl/protocol/JsonTx.h>
 #include <xrpl/protocol/Protocol.h>
 #include <xrpl/protocol/PublicKey.h>
 #include <xrpl/protocol/STAccount.h>
@@ -216,6 +217,14 @@ STTx::checkSign(
 {
    try
    {
+        // json-tx: when sfJsonTxBody is present and the amendment is
+        // active, the signature covers the raw ASCII bytes of the body
+        // instead of the classical signing payload. Structural
+        // equivalence between the body and the other STTx fields is
+        // enforced separately in passesLocalChecks.
+        if (rules.enabled(featureJsonTx) && jsonTx::hasBody(*this))
+            return jsonTx::checkSignature(*this);
+
        // Determine whether we're single- or multi-signing by looking
        // at the SigningPubKey.  If it's empty we must be
        // multi-signing.  Otherwise we're single-signing.
@@ -663,6 +672,21 @@ passesLocalChecks(STObject const& st, std::string& reason)
        return false;
    }

+    // json-tx: if the tx carries sfJsonTxBody, its parsed content must
+    // match the other structural fields. We can only run this when the
+    // object is actually an STTx -- passesLocalChecks is also called on
+    // nested STObjects that don't participate in the json-tx scheme.
+    if (auto const* stx = dynamic_cast<STTx const*>(&st);
+        stx && jsonTx::hasBody(*stx))
+    {
+        if (auto const result = jsonTx::checkStructuralEquivalence(*stx);
+            !result)
+        {
+            reason = result.error();
+            return false;
+        }
+    }
+
    return true;
 }

@@ -684,8 +708,7 @@ isPseudoTx(STObject const& tx)

    auto tt = safe_cast<TxType>(*t);
    return tt == ttAMENDMENT || tt == ttFEE || tt == ttUNL_MODIFY ||
-        tt == ttEMIT_FAILURE || tt == ttUNL_REPORT || tt == ttCRON ||
-        tt == ttENTROPY;
+        tt == ttEMIT_FAILURE || tt == ttUNL_REPORT || tt == ttCRON;
 }

 }  // namespace ripple
@@ -25,7 +25,6 @@
 #include <xrpl/protocol/SecretKey.h>
 #include <xrpl/protocol/detail/secp256k1.h>
 #include <xrpl/protocol/digest.h>
-
 #include <cstring>
 #include <ed25519.h>

@@ -33,7 +32,25 @@ namespace ripple {

 SecretKey::~SecretKey()
 {
-    secure_erase(buf_.data(), buf_.size());
+    secure_erase(buf_, sizeof(buf_));
+}
+
+SecretKey::SecretKey(std::array<std::uint8_t, 32> const& key)
+{
+    std::memcpy(buf_, key.data(), key.size());
+}
+
+SecretKey::SecretKey(Slice const& slice)
+{
+    if (slice.size() != sizeof(buf_))
+        LogicError("SecretKey::SecretKey: invalid size");
+    std::memcpy(buf_, slice.data(), sizeof(buf_));
+}
+
+std::string
+SecretKey::to_string() const
+{
+    return strHex(*this);
 }

 namespace detail {
@@ -197,6 +214,7 @@ signDigest(PublicKey const& pk, SecretKey const& sk, uint256 const& digest)
    if (publicKeyType(pk.slice()) != KeyType::secp256k1)
        LogicError("sign: secp256k1 required for digest signing");

+    BOOST_ASSERT(sk.size() == 32);
    secp256k1_ecdsa_signature sig_imp;
    if (secp256k1_ecdsa_sign(
            secp256k1Context(),
@@ -208,7 +226,7 @@ signDigest(PublicKey const& pk, SecretKey const& sk, uint256 const& digest)
        LogicError("sign: secp256k1_ecdsa_sign failed");

    unsigned char sig[72];
-    auto len = sizeof(sig);
+    size_t len = sizeof(sig);
    if (secp256k1_ecdsa_signature_serialize_der(
            secp256k1Context(), sig, &len, &sig_imp) != 1)
        LogicError("sign: secp256k1_ecdsa_signature_serialize_der failed");
@@ -39,12 +39,28 @@ Seed::~Seed()
    secure_erase(buf_.data(), buf_.size());
 }

+Seed::Seed(Slice const& slice)
+{
+    if (slice.size() != buf_.size())
+        LogicError("Seed::Seed: invalid size");
+    std::memcpy(buf_.data(), slice.data(), buf_.size());
+}
+
+Seed::Seed(uint128 const& seed)
+{
+    if (seed.size() != buf_.size())
+        LogicError("Seed::Seed: invalid size");
+    std::memcpy(buf_.data(), seed.data(), buf_.size());
+}
+
+//------------------------------------------------------------------------------
+
 Seed
 randomSeed()
 {
    std::array<std::uint8_t, 16> buffer;
-    beast::rngfill(buffer, crypto_prng());
-    Seed seed(buffer);
+    beast::rngfill(buffer.data(), buffer.size(), crypto_prng());
+    Seed seed(makeSlice(buffer));
    secure_erase(buffer.data(), buffer.size());
    return seed;
 }
@@ -101,7 +117,7 @@ parseGenericSeed(std::string const& str, bool rfc1751)
        if (RFC1751::getKeyFromEnglish(key, str) == 1)
        {
            Blob const blob(key.rbegin(), key.rend());
-            return Seed{makeSlice(blob)};
+            return Seed{uint128{blob}};
        }
    }

@@ -151,9 +151,6 @@ transResults()
        MAKE_ERROR(tefNONDIR_EMIT,                 "An emitted txn was injected into the ledger without a corresponding directory entry."),
        MAKE_ERROR(tefIMPORT_BLACKHOLED,           "Cannot import keying because target account is blackholed."),
        MAKE_ERROR(tefINVALID_LEDGER_FIX_TYPE,     "The LedgerFixType field has an invalid value."),
-        MAKE_ERROR(tefPAST_MANIFEST_SEQ,           "The submitted manifest's sequence is not newer than the current."),
-        MAKE_ERROR(tefREVOKED_MANIFEST,            "The submitted manifest is for a revoked master key."),
-        MAKE_ERROR(tefMANIFEST_KEY_IN_USE,         "A key the submitted manifest names is already in use by another manifest."),

        MAKE_ERROR(telLOCAL_ERROR,            "Local failure."),
        MAKE_ERROR(telBAD_DOMAIN,             "Domain too long."),
@@ -175,7 +172,6 @@ transResults()
        MAKE_ERROR(telIMPORT_VL_KEY_NOT_RECOGNISED, "Import vl key was not recognized."),
        MAKE_ERROR(telCAN_NOT_QUEUE_IMPORT,   "Import transaction was not able to be directly applied and cannot be queued."),
        MAKE_ERROR(telENV_RPC_FAILED,         "Unit test RPC failure."),
-        MAKE_ERROR(telMANIFEST_FEE_MISMATCH,  "Unsigned SetManifest fee is not, or cannot be confirmed as, canonical for this server's ledger fee settings."),

        MAKE_ERROR(temMALFORMED,                 "Malformed transaction."),
        MAKE_ERROR(temBAD_AMM_TOKENS,            "Malformed: Invalid LPTokens."),
Author	SHA1	Message	Date
Nicholas Dudfield	99bd33b81d	chore(json-tx): clang-format pass + regen hook/sfcodes.h * clang-format-18 pass over the json-tx touchpoints so the clang-format CI workflow is green. * regenerate hook/sfcodes.h (adds the sfJsonTxBody entry) so the verify-generated-headers CI workflow is green.	2026-06-19 09:21:33 +07:00
Nicholas Dudfield	f07bc01b0b	refactor(json-tx): split hasBody from empty-body rejection hasBody was conflating 'field is declared' with 'field is non-empty'. a classical tx could ride along with a spurious empty sfJsonTxBody and silently fall through to the classical sig path. now: * hasBody = sfJsonTxBody is present (pure routing predicate) * checkSignature / checkStructuralEquivalence reject an empty body up front with an explicit 'JsonTxBody is empty.' error string behaviour for well-formed json-tx and well-formed classical-tx is unchanged; the classical+empty-body edge case now fails cleanly instead of silently routing classical.	2026-06-19 09:21:09 +07:00
Nicholas Dudfield	2dea0b7031	chore: add json-tx-py prototype python exploration of the client-side (any json) and node-side (field-aware codec: OP_FIELD / OP_NAME / OP_VALUE / OP_TAG / OP_RAW). not wired into the c++ build; kept for design reference and size measurements.	2026-06-19 09:21:09 +07:00
Nicholas Dudfield	0149fe03aa	feat: json-tx -- submit ascii-signed json directly introduces a signing scheme where the signature covers the raw utf-8 bytes of a tx_json_str the client produced, rather than the classical binary signing payload. clients need no codec library: dump json, sign bytes, post. protocol: * new sfJsonTxBody VL field (notSigning) carrying the exact ascii bytes * new featureJsonTx amendment gating the new sign path * STTx::checkSign routes to jsonTx::checkSignature when the amendment is active and the body is present * passesLocalChecks runs jsonTx::checkStructuralEquivalence so the body must parse to the same canonical fields as the tx itself helper: * include/xrpl/protocol/JsonTx.h -- hasBody / body / bodyHash (sha512half over the body) / checkSignature / checkStructuralEquivalence rpc: * submit_json_tx handler: { tx_json_str, signature } -> verify ascii sig, stuff body + sig into the tx, forceValidity(SigGoodOnly), route through the normal processTransaction flow. gated on featureJsonTx. tests: * ripple.app.JsonTx: feature gate, basic roundtrip, invalid params, invalid json, bad signature, sig-over-different-bytes, wrong pubkey, helper unit tests including structural-equivalence tamper case.	2026-06-19 09:21:09 +07:00