OP Labs: The fault proof has been launched on the OP Sepolia test network and is planned to be implemented on the OP main network in the future.

OP Labs has released "Fault Proof" on the OP Sepolia test network, and plans to implement it on the OP mainnet in the future. As a security mechanism for the Ethereum Layer 2 network, Fault Proof allows users to raise objections to potentially fraudulent or incorrect transactions. They are crucial for ensuring that off-chain transaction processing is not manipulated.