Avalanche incident

Fuji(Testnet) C-Chain Helicon Block Indexing

Resolved after 2 hours 4 minutes, affecting Explorer, on July 28, 2026.

monitoring Jul 28, 2026, 04:34 PM UTC

A fix has been implemented and we are monitoring the results.

Started
Jul 28, 2026, 03:09 PM UTC
Resolved
Jul 28, 2026, 05:13 PM UTC
Duration
2h 4m
Detected by Pingoru
Jul 28, 2026, 03:09 PM UTC

Affected components

Explorer

Update timeline

  1. investigating Jul 28, 2026, 03:09 PM UTC

    We are currently investigating delayed C-Chain block indexing after the Helicon activation.

  2. investigating Jul 28, 2026, 03:10 PM UTC

    We are continuing to investigate this issue.

  3. investigating Jul 28, 2026, 03:31 PM UTC

    We are continuing to investigate this issue.

  4. investigating Jul 28, 2026, 03:46 PM UTC

    We are continuing to investigate this issue impacting Fuji(Testnet) C-Chain block ingestion.

  5. investigating Jul 28, 2026, 03:51 PM UTC

    We are continuing to investigate this issue.

  6. investigating Jul 28, 2026, 03:52 PM UTC

    We are continuing to investigate this issue.

  7. identified Jul 28, 2026, 04:08 PM UTC

    The issue has been identified and a fix is being implemented.

  8. monitoring Jul 28, 2026, 04:34 PM UTC

    A fix has been implemented and we are monitoring the results.

  9. resolved Jul 28, 2026, 05:13 PM UTC

    This incident has been resolved.

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