Base releases block production outage analysis report: Sequencer bug causes brief chain downtime, protocol stress testing to be enhanced

Odaily reported that Base has released a block production outage analysis report, disclosing two block production interruptions on the Base mainnet on June 25 and 26, lasting 116 minutes and 20 minutes respectively. On-chain asset security was unaffected, and funds remained safe at all times. The root cause was identified as a bug in the sequencer's block construction logic: after a transaction execution failure, the old journal state was not properly cleared, leading to gas calculation errors during the execution of subsequent legitimate transactions. This resulted in the generation of invalid state transition blocks, causing the entire L2 chain to pause block production.

Base stated that the issue has been resolved through a fix patch. Moving forward, it will strengthen protocol fuzz testing and stress testing frameworks to identify potential malicious transaction paths, while optimizing monitoring and operational processes. Additionally, a recovery mechanism is planned to be introduced to enhance rapid recovery capabilities in the event of similar incidents in the future.