add fixNFTokenRemint ammt

content/concepts/consensus-network/amendments/known-amendments.md

@@ -15,6 +15,7 @@ The following is a comprehensive list of all known [amendments](amendments.html)
 | Name                              | Introduced | Status                        |
 |:----------------------------------|:-----------|:------------------------------|
 | [OwnerPaysFee][]                  | TBD        | [In Development: TBD]( "BADGE_LIGHTGREY") |
+| [fixNFTokenRemint][]              | v1.11.0    | [In Development: TBD]("BADGE_LIGHTGREY") |
 | [DisallowIncoming][]              | v1.10.0    | [In Development: TBD]( "BADGE_LIGHTGREY") |
 | [fixNonFungibleTokensV1_2][]      | v1.10.0    | [In Development: TBD]( "BADGE_LIGHTGREY") |
 | [fixTrustLinesToSelf][]           | v1.10.0    | [In Development: TBD]( "BADGE_LIGHTGREY") |
@@ -582,6 +583,25 @@ This amendment fixes a bug in the [NonFungibleTokensV1][] amendment code where N
 This amendment has no effect unless the [NonFungibleTokensV1][] amendment is enabled. This amendment is obsolete because its effects are included as part of [NonFungibleTokensV1_1][].
 
 
+## fixNFTokenRemint
+[fixNFTokenRemint]: #fixnftokenremint
+
+| Amendment    | fixNFTokenNegOffer |
+|:-------------|:-------------------|
+| Amendment ID | AE35ABDEFBDE520372B31C957020B34A7A4A9DC3115A69803A44016477C84D6E |
+| Status | In Development |
+| Default Vote (Latest stable release) | No |
+| Pre-amendment functionality retired? | No |
+
+Amendment `fixNFTokenRemint` would change the way NFT sequence numbers are constructed to prevent a situation where the same NFT could be minted more than once with the same sequence number, creating a possible collision scenario. This amendment would change the construction of NFT sequence numbers to:
+
+- Create a new `AccountRoot` field, `FirstNFTSequence`, that stays constant over time. This field is set to the current account sequence when the account issues its first NFT. Otherwise, it is not set.
+
+- Compute the sequence of a newly minted NFT as `FirstNFTSequence` + `MintedNFTokens` (after which, `MintedNFTokens` increments by 1).
+
+The amendment also introduces a new account deletion restriction. An account can only be deleted if `FirstNFTSequence` + `MintedNFTokens` + 256 is less than the current ledger sequence (256 was chosen as a heuristic restriction for account deletion and already exists in the account deletion constraint). Without this restriction, an NFT could still be re-minted under certain conditions.
+
+
 ## fixNonFungibleTokensV1_2
 [fixNonFungibleTokensV1_2]: #fixnonfungibletokensv1_2