v0.3.0 - 2025-11-28

Rename all ConfidentialFungibleToken files and contracts to use ERC7984 instead. (#158)
ERC7984: Change tokenURI() to contractURI() following change in the ERC. (#209)
ERC7984: Support ERC-165 interface detection on ERC-7984. (#246)
IERC7984: Change tokenURI() to contractURI() following change in the ERC. (#209)
IERC7984: Support ERC-165 interface detection on ERC-7984. (#246)
ERC7984Omnibus: Add an extension of ERC7984 that exposes new functions for transferring between confidential subaccounts on omnibus wallets. (#186)
ERC7984ObserverAccess: Add an extension for ERC7984, which allows each account to add an observer who is given access to their transfer and balance amounts. (#148)
ERC7984Restricted: An extension of ERC7984 that implements user account transfer restrictions. (#182)
ERC7984Freezable: Add an extension to ERC7984, which allows accounts granted the "freezer" role to freeze and unfreeze tokens. (#151)
ERC7984Rwa: An extension of ERC7984, that supports confidential Real World Assets (RWAs). (#160)

FHESafeMath: Add tryAdd and trySub functions that return 0 upon failure. (#206)
FHESafeMath: Support non-initialized inputs in tryIncrease(..)/tryDecrease(..). (#183)

v0.2.0 - 2025-08-15

IConfidentialFungibleToken: Prefix totalSupply and balanceOf functions with confidential. (#93)
IConfidentialFungibleToken: Rename EncryptedAmountDisclosed event to AmountDisclosed. (#93)
ConfidentialFungibleToken: Change the default decimals from 9 to 6. (#74)
ConfidentialFungibleTokenERC20Wrapper: Add an internal function to allow overriding the max decimals used for wrapped tokens. (#89)
ConfidentialFungibleTokenERC20Wrapper: Add an internal function to allow overriding the underlying decimals fallback value. (#133)

VotesConfidential: Add votes governance utility for keeping track of FHE vote delegations. (#40)
ConfidentialFungibleTokenVotes: Add an extension of ConfidentialFungibleToken that implements VotesConfidential. (#40)

VestingWalletConfidential: A vesting wallet that releases confidential tokens owned by it according to a defined vesting schedule. (#91)
VestingWalletCliffConfidential: A variant of VestingWalletConfidential which adds a cliff period to the vesting schedule. (#91)
VestingWalletConfidentialFactory: A generalized factory that allows for batch funding of confidential vesting wallets. (#102)

HandleAccessManager: Minimal contract that adds a function to give allowance to callers for a given ciphertext handle. (#143)
ERC7821WithExecutor: Add an abstract contract that inherits from ERC7821 and adds an executor role. (#102)
CheckpointsConfidential: Add a library for handling checkpoints with confidential value types. (#60)
TFHESafeMath: Renamed to FHESafeMath. (#137)

Initial release of the OpenZeppelin Confidential Contracts.

Note: Confidential contracts are currently in a phase of rapid development--future releases of the major version 0 may not be backwards compatible.