Optimism experienced a major incident on November 19, 2025, lasting —. The incident has been resolved; the full update timeline is below.
Update timeline
- resolved Nov 19, 2025, 05:34 PM UTC
Type: Incident Duration: 4 hours and 2 minutes Affected Components: Transaction Sequencing Nov 19, 19:13:03 GMT+0 - Identified - The problem has been diagnosed and a fix is being worked on by the flashbots team. Nov 19, 21:30:24 GMT+0 - Monitoring - A fix has been applied and we are monitoring for stability. Nov 19, 21:36:43 GMT+0 - Resolved - This incident has been resolved, flashblocks are now operational again. Nov 19, 17:34:30 GMT+0 - Investigating - Following the activation of the Jovian hardfork, we detected some problems with op-rbuilder and are investigating the root cause. Nov 19, 17:45:20 GMT+0 - Investigating - To clarify, regular (non-flashblocks) usage is unaffected. Unsafe and safe head progression and the rest of the system are fully operational.