Starknet Outage Report: State conflict between the execution layer and the proof layer caused approximately 18 minutes of on-chain activity rollback

BlockBeats News, January 11 — Ethereum L2 network Starknet released a post-mortem report on the short-term mainnet outage this Monday, stating that the cause of the incident was a state inconsistency between the execution layer (blockifier) and the proof layer: under specific cross-function call and rollback combinations, the execution layer incorrectly recorded a rolled-back state, leading to transaction execution anomalies. The related transactions did not receive finality confirmation from L1.

This incident triggered a blockchain reorganization, rolling back approximately 18 minutes of on-chain activity. This is the second major outage since 2025; previously, in September, a sequencer vulnerability caused over 5 hours of downtime and a rollback of about 1 hour of on-chain activity.