Base Blockchain Back Online After Two-Hour Disruption Halted Ethereum Layer-2 Operations
Coinbase's Base network, one of Ethereum's most prominent layer-2 solutions, has returned to normal operations following an unexpected outage that lasted approximately two hours and completely halted block production and transaction processing on the platform.
The disruption first became publicly visible at 16:03 UTC on Thursday, when the Base team flagged that mainnet block production had entered an "unhealthy" state. Nearly an hour later, at 16:52 UTC, developers confirmed they had pinpointed the source of the issue and were actively pursuing multiple remediation strategies to restore normal functionality.
According to an official update from the Base development team, the root cause of the outage was linked to an invalid block that triggered a cascade of issues across the network. While internal nodes were reported to be syncing correctly after operations resumed, the team emphasized that its investigation into the precise origin of the fault is still ongoing. As a precautionary measure, ecosystem node operators were advised to manually restart their Base nodes in order to ensure proper synchronization with the restored chain.
What exactly produced the invalid block remains unclear. Base has yet to disclose whether the failure was the result of a software bug, a consensus mechanism fault, or some other underlying technical problem. The team committed to continued network monitoring and pledged to share further updates as new information becomes available.
This outage marks the second significant disruption for the Base network in less than a year. The platform previously experienced a downtime event in August 2025, which had raised concerns among developers and users relying on the layer-2 infrastructure for daily transactions and decentralized application activity.
Base has grown into one of the most heavily used Ethereum layer-2 networks since its public launch, attracting a substantial user base drawn by lower transaction fees and faster confirmation times compared to Ethereum's mainnet. Disruptions of this nature, while relatively rare, can have meaningful implications for decentralized finance protocols, NFT platforms, and other applications built on top of the network.
The broader crypto community has been watching closely as layer-2 networks continue to scale and handle increasing volumes of on-chain activity. Reliability and uptime remain critical factors for user trust, and back-to-back incidents within a single year could prompt questions about the resilience of Base's underlying infrastructure.
Coinbase has not yet issued a broader public statement addressing the incident beyond the technical updates provided by the Base core team.
