OP
The Optimism Bridge is the canonical entry and exit between Ethereum and the OP Mainnet rollup, the original deployment of the OP Stack. Deposits move on-chain in minutes; withdrawals back to Ethereum follow the standard fault-proof challenge window.
As a canonical bridge, security is inherited from the OP Stack’s L1 contracts rather than from a third-party validator set. The OP token governs Optimism’s broader stack and the wider OP Superchain ecosystem of OP Stack rollups.