zkSync contracts v4 upgrade announcement

We will start the notice period to upgrade zkSync contracts to a new version today.

Changes

• Timestamp is added to the block commitment. Rollup block timestamp validity is checked when block is committed onchain.
• Offchain ChangePubKey can be performed for smart contract wallets that can be deployed with CREATE2 when pubkey hash is encoded in the CREATE2 salt parameter.
• Governance contract can pause token deposits.
• ChangePubKey message signature is changed.
• Onchain operation processing changed on the contract.
• Recursive block verifier added.
• Onchain rollup block commitment changed, multiple blocks can be committed, verified at once.

Code diff

The exact changes in the code of the contracts can be found here (opens new window).