Odaily News OP Labs posted on the X platform that OP Sepolia will be upgraded to support the fully functional OP Stack fault proof (Fault Proof) version on March 19. This upgrade will introduce some breaking changes that will impact bridging, CEX, and custom solutions using withdrawals. The team is asking relevant developers to update logic to support trouble tickets, update withdrawal monitors, and update dispute monitors. The proposed fail-proof upgrade requires developers to update the withdrawal logic before OP Sepolia is released to enable these fail-proof changes. Importantly, withdrawals between OP Sepolia and Sepolia will no longer be instant as they will use a proof-of-failure mechanism.