Outage in Base
Base Sepolia Testnet halted
Resolved Major
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Outage Details
Base engineering team is aware of an issue causing a halt on the Sepolia testnet. We're working to get block production healthy as soon as possible.
Components affected
Base Block productionLatest Updates ( sorted recent to last )
RESOLVED
20 days ago - at 08/15/2025 08:22PM
This incident has been resolved.
MONITORING
20 days ago - at 08/15/2025 08:17PM
Block building failures have been mitigated. We will continue to monitor the block production health.
IDENTIFIED
20 days ago - at 08/15/2025 07:56PM
Base engineering team is aware of an issue causing a halt on the Sepolia testnet. We're working to get block production healthy as soon as possible.
Latest Base outages
Base Mainnet | Unsafe head delay - about 1 month ago
Flashblocks degraded. Falling back to default block building. - about 2 months ago
Base Mainnet | Safe Head Delay - 3 months ago
Safe Head behind Unsafe - 4 months ago
Sepolia flashblocks websocket endpoint rate limiting - 4 months ago
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