According to TechFlow, Ethereum's Layer 2 solution Base Network announced the launch of the Fault Proofs function on the Sepolia testnet.

This is a key step in Base's transition to a higher level of decentralization. Fault proof allows anyone to declare and challenge the L2 state, reducing reliance on centralized parties. Base said that in addition to fault proof, a security committee will be introduced in the contract upgrade to achieve the Stage 1 decentralization level defined by Vitalik.