Coinbase’s Base Layer-2 Suffers 29-Minute Outage Due to Unsafe Head Delay

Base, Coinbase’s Ethereum Layer-2 blockchain, experienced a 33-minute outage on Aug. 5 due to a bug in the Conductor component that led to an unprepared backup node being chosen, prompting manual recovery and planned infrastructure upgrades.

ETH
TON
OP

Summary

On Aug. 5, Base experienced a 33-minute network outage when a bug in its Conductor component caused a faulty sequencer handoff. The outage began at 6:07 am UTC, and the issue was declared at 6:12 am UTC. By 6:40 am UTC, the team manually transferred leadership to a healthy sequencer, restoring block production without any fund losses. The incident impacted Flashblocks, withdrawals, and deposits, and comes ahead of planned infrastructure enhancements to improve resiliency.

Terms & Concepts
  • Ethereum Layer-2: A secondary scaling solution built on Ethereum to enhance transaction throughput and reduce costs.
  • Sequencer: A node that orders transactions and produces blocks in blockchain networks.
  • Conductor: A component in the OP Stack responsible for managing high-availability sequencer clusters and executing node handoffs.