Optimism is a Layer 2 scaling solution for Ethereum. Instead of running all computation and data on the Ethereum network, Optimism puts all transaction data on-chain and runs computation off-chain, increasing Ethereum’s transactions per second and decreasing transaction fees. Rollup is one promising solution to the Etheruem scaling problem. There are three good candidates. Besides Optimism, Arbitrum and zkSync are two rollup projects that show good signs of growth and adaption. According to a...