According to the official announcement of Base, the Base mainnet will introduce fault proofs on October 30, marking an important step towards decentralization. With the introduction of this mechanism, anyone can monitor and challenge invalid withdrawal transactions without permission, eliminating the need for third-party trust. The Base team said they have been working closely with Optimism to ensure that proof of failure goes live smoothly and security is upgraded. During the upgrade, all pending withdrawal transactions will need to be re-verified.