L2ToL1MessagePasser (OP) (OP Stack predeploys, OP Mainnet)

0x4200000000000000000000000000000000000016 · explorer · Sourcify · all OP Stack predeploys contracts

Upgradeable proxy	yes (eip1967)
Implementation	`0x27e5…a124`
Upgrade authority	contract owned by 0x6b1bae59d09fccbddb6c6cceb07b7279367c4e3b → externally owned account (single private key)
Owner	—
Paused	not pausable / unknown

Admin change history (since tracking began)

No admin changes recorded yet in this view.

Alert me when this contract is upgraded or its owner changes: Ledgerbell (free tier). Full live verdict incl. complete upgrade history: GET /x402/verdict?chain=optimism&address=0x4200000000000000000000000000000000000016 ($0.01, x402).