According to BlockBeats news, on October 31, Base announced that Fault proofs have been launched on the Base mainnet, allowing anyone to propose or challenge proposals related to L2 state in a permissionless manner.

Base indicates that Fault proofs are a foundational step towards its decentralization. Another important step in achieving the first phase of decentralization for Base is the addition of the Security Council to its contract upgrade key. Once this step is completed, Base can only upgrade contracts based on actions taken by the Optimism Security Council, which only takes actions approved by Optimism Governance.