Coinbase's Base blockchain resumes after two-hour outage disrupted network

Coinbase-backed Ethereum layer-2 network Base resumed block production Thursday after a disruption of roughly two hours that halted the blockchain.

In an update, the Base team said the chain has resumed working and internal nodes were syncing correctly, though it continues to investigate the root cause of the incident. The team also advised ecosystem node operators to restart their Base nodes to restore synchronization.

The first public indication of problems came at 16:03 UTC, when Base reported that mainnet block production was “unhealthy.” By 16:52 UTC, the team said it had identified a problem and was pursuing multiple remediation efforts.

The incident temporarily halted transaction processing on one of Ethereum's largest layer-2 networks. Base has not yet disclosed what caused the invalid block or whether the issue stemmed from a software bug or another consensus-related fault.

The network also previously suffered an outage in August 2025.

The team said it will continue to monitor network stability and provide further updates as its investigation continues.