The total TVL of the five mainstream L2 bridging solutions, Arbitrum, Optimism, Starknet, zkSync and Base, has exceeded 9 million ETH. At the time of writing this article, it reached 9,004,362 ETH, of which Arbitrum bridged 3,557,939 ETH, Optimism 747,686 ETH, zkSync 3,416,926 ETH, Starknet 891,374 ETH, and Base 390,437 ETH.