Validators (entities that supply their resources to run and maintain a network) were advised to reject it, and an emergency server release marked it unsupported to prevent activation. No funds were lost, because it never reached the main network.
Permission Delegation, which lets an institution grant another account narrowly scoped authority without handing over full signing power, was disclosed as vulnerable in September 2025 and disabled.
The bug allowed one account to charge transaction fees to another and potentially drain its balance. The ledger’s documentation has listed both amendments as obsolete since, to be replaced by revised versions.
The other three are new. Confidential MPT combines zero-knowledge proofs, which let someone prove a statement is true without revealing the underlying data, with elliptic-curve encryption, so that balances and transfer amounts on Multi-Purpose
Tokens stay private while auditors or regulators can still verify them when required.
Sponsored Fees and Reserves lets a bank or platform cover another account’s XRP fees and reserve requirement, removing the need for every user to acquire XRP before transacting.
Lastly, Dynamic MPT lets an issuer specify at creation which token properties can be changed later, avoiding a full migration to a new token when fees or metadata need updating.
