Centralized Sequencers: Currently, many L2 solutions such as Arbitrum, Optimism, zkSync and Polygon zkEVM use centralized sequencers. Sequencers are responsible for sequencing transactions on the network. The centralization of sequencers can create risks such as transaction censorship or malicious use of MEV (Miner Extractable Value), and they also represent a single point of failure. Decentralization Plans: Despite the current centralization, many of these projects have plans to decentralize...
