Starknet mainnet short-term outage follow-up: state inconsistency caused block reorganization, marking the second time this has happened this year.

【Blockchain Rhythm】Recently, Starknet has encountered issues again. This Ethereum L2 network experienced a brief mainnet outage on Monday, and the official team subsequently released a root cause analysis.

According to the incident report, the problem stemmed from a state inconsistency between the execution layer (blockifier) and the proof layer. Specifically, in certain cross-function call and rollback scenarios, the execution layer incorrectly recorded some state changes that should have been rolled back, directly causing transaction execution anomalies. Affected transactions did not receive finality confirmation from the L1 layer.

This incident triggered on-chain block reorganization, with approximately 18 minutes of transaction records being completely rolled back. To make matters worse, this is the second major outage for Starknet since 2025. Looking back at the timeline, the failure in September last year was caused by a sequencer vulnerability that led to over 5 hours of network downtime and a rollback of about 1 hour of on-chain activity.

Repeated technical issues significantly undermine confidence in an L2. For ecosystem applications and users relying on Starknet, such instability may cause reconsideration. Strengthening system stability in the future should be the most urgent task for the Starknet team.