MegaETH vs OP Mainnet

MegaETH is an Ethereum Layer-2 designed as a real-time blockchain, with documentation highlighting roughly 10 ms block times and real-time transaction processing. It keeps the EVM developer surface while redesigning execution, mini-blocks and settlement around low-latency applications. The network uses chain ID 4326 and has MEGA as its associated CoinGecko token.

OP Mainnet (Optimism) is an optimistic rollup that batches transactions to Ethereum and relies on fraud proofs submitted during a seven‑day challenge window. The Bedrock upgrade in 2023 cut L1 calldata costs by 40 % and introduced multi‑proof modularity. ‘RetroPGF’ rounds redistribute protocol revenue to public‑goods builders, governed by the OP token‑holder Collective.