CoinVoice has recently learned that, according to The Block, the Arbitrum DAO has initiated a proposal for improvement (AIP) voting, planning to upgrade the Arbitrum One and Nova chains to the Bounded Liquidity Delay (BoLD) protocol. This protocol will run on the testnet starting in April 2024, and if the proposal is approved, it will be implemented on both mainnet chains in February 2025.
The BoLD protocol aims to enhance the security of Arbitrum withdrawals to the Ethereum mainnet by introducing a fixed time window (approximately 13 days plus a 2-day grace period) for resolving chain state disputes. This mechanism will shift the validation authority from a whitelist model to a fully open one, allowing anyone to participate in network security validation, effectively reducing the risk of malicious delay attacks. [Original link]
