Resolved after 5 hours 5 minutes, affecting Arbitrum, on March 23, 2026.
A bug in Nitro software caused a block divergence on Arbitrum Sepolia, leading to block production being halted as a precaution. This issue is affecting all Arbitrum Orbit rollups that depend on the same Nitro version. Other Impacted networks: Anime Sepolia ApeChain Curtis Mind Testnet Edge Testnet EARNM Testnet Additional Arbitrum-based rollups may also be affected No user funds are at risk. The team is actively working on an infrastructure update and a new Nitro release to restore block production.
Affected components
Update timeline
- investigating Mar 23, 2026, 05:45 PM UTC
Arbitrum Sepolia is currently experiencing a network-wide stall. All services that rely on network progress are impacted. We are working closely with the Arbitrum team to resolve this as quickly as possible
- investigating Mar 23, 2026, 06:09 PM UTC
We are continuing to investigate this issue.
- identified Mar 23, 2026, 08:11 PM UTC
A bug in Nitro software caused a block divergence on Arbitrum Sepolia, leading to block production being halted as a precaution. This issue is affecting all Arbitrum Orbit rollups that depend on the same Nitro version. Other Impacted networks: Anime Sepolia ApeChain Curtis Mind Testnet Edge Testnet EARNM Testnet Additional Arbitrum-based rollups may also be affected No user funds are at risk. The team is actively working on an infrastructure update and a new Nitro release to restore block production.
- resolved Mar 23, 2026, 09:50 PM UTC
This incident has been resolved.
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