OP Stack

Optimism's open-source framework for deploying optimistic rollups. Used by Base (Coinbase), Zora Network, World Chain, Mode, and many others. The Superchain is the family of OP Stack chains that share security infrastructure and pay a 15% sequencer-fee tax to the Optimism Collective. Modular architecture: execution (op-geth), consensus (op-node), settlement (dispute games on L1), and DA (Ethereum or alt-DA) are all swappable.