OP Mainnet: Ethereum's Scalable, Optimistic Rollup Solution
OP Mainnet, formerly known as Optimism, is an Ethereum-compatible Layer 2 blockchain that offers an alternative to the main network. It's designed to scale Ethereum by moving transaction execution to a separate network while relying on the mainnet for settlement and data availability.
The OP Mainnet uses optimistic rollup technology, which assumes that state proposals are correct unless someone successfully challenges them. This process is facilitated by a fault-proof system that allows participants to dispute invalid proposals during a challenge period.
OP Mainnet transactions move through several components before reaching Ethereum-backed settlement, including submission, sequencing, execution, batch publication, state verification, and finalization. The network also uses EVM-compatible software, allowing developers to deploy Solidity smart contracts and use familiar Ethereum tools.