Ethereum has seen scaling issues for a long time. The high gas fees due to network congestion remained a pain point. To address this issue, many scaling solutions have emerged. zkSync Era is an Ethereum Layer 2 scaling solution from Matter Labs that provides cheaper and quicker transactions than the mainnet. The biggest difference between Arbitrum and Optimism, the largest Layer 2 ecosystems and zkSync is the RollUp technology. While the previous two are based on Optimistic Rollup, zkSync is ...