[Network-Wide] Arbitrum Sepolia Stalled

What to do

• Check whether you use Alchemy Arbitrum. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 5h 5m it lasted.

  Anything that failed between 2026-03-23 16:45 UTC and 2026-03-23 21:50 UTC may need a replay.

• Subscribe to Alchemy's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=alchemy works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Alchemy 4

1. investigatingMar 23, 2026, 4:45 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

   provider

2. investigatingMar 23, 2026, 6:09 PM UTC

   We are continuing to investigate this issue.

   provider

3. identifiedMar 23, 2026, 8:11 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.

   provider

4. resolvedMar 23, 2026, 9:50 PM UTC

   This incident has been resolved.

   provider

Corrections

None so far.

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