Arbitrum DAO has opened a vote on the proposal to implement the BoLD protocol across the Arbitrum ecosystem chains. BoLD (Bounded Liquidity Delay) is a new dispute resolution protocol aimed at replacing the current mechanism and allowing permissionless validation while mitigating the risk of delay attacks. The implementation of BoLD will bring Arbitrum closer to becoming a Stage 2 Rollup, according to the classification by L2Beat.
Previously, the Arbitrum Foundation proposed upgrading the Rollup contracts on Arbitrum One and Arbitrum Nova to utilize BoLD, with the goal of improving security and decentralization for the Arbitrum chains.