Starknet Outage Report: State Conflict Between Execution Layer and Proving Layer Causes Approximately 18 Minutes of On-Chain Activity Rollback

BlockBeats News, January 11, Ethereum L2 network Starknet released a post-mortem analysis report regarding the brief mainnet outage earlier this week, stating that the incident was caused by a state inconsistency between the execution layer (blockifier) and the proving layer: under a specific combination of cross-function calls and rollbacks, the execution layer incorrectly recorded state writes that had already been rolled back, resulting in abnormal transaction execution. The related transactions did not receive L1 finality confirmation.

This event triggered a block reorganization, and approximately 18 minutes of on-chain activity was rolled back. This was the second major outage since 2025; previously, in September, a sequencer vulnerability caused an outage of more than 5 hours and rolled back about 1 hour of on-chain activity.