We will be conducting a test of our forthcoming pausability features on the Sepolia network on noon EST on Tuesday, January 23rd, lasting for approximately 1 hour.

At this time the following methods on our Bridge contracts will revert if called:

• OptimismPortal.proveWithdrawalTransaction()
• OptimismPortal.finalizeWithdrawalTransaction()
• L1CrossDomainMessenger.relayMessage()
• StandardBridge.finalizeBridgeERC20()
• StandardBridge.finalizeBridgeETH()
• L1ERC721Bridge.finalizeBridgeERC721()

This is part of ongoing efforts to improve the security of our system and our ability to respond to an incident. Thank you.