Chainstack incident

Several Testnets Outage due to network maintenance

Major Resolved

Chainstack experienced a major incident on July 31, 2026 affecting Avalanche Trader Nodes (Avalanche Fuji Testnet (Virtuozzo, Frankfurt)) and Bitcoin Trader Nodes (Bitcoin Testnet Full (Virtuozzo, Frankfurt)) and 1 more component, lasting 5h 4m. The incident has been resolved; the full update timeline is below.

Started
Jul 31, 2026, 03:03 AM UTC
Resolved
Jul 31, 2026, 08:08 AM UTC
Duration
5h 4m
Detected by Pingoru
Jul 31, 2026, 03:03 AM UTC

Affected components

Avalanche Trader Nodes (Avalanche Fuji Testnet (Virtuozzo, Frankfurt))Bitcoin Trader Nodes (Bitcoin Testnet Full (Virtuozzo, Frankfurt))Ethereum Trader Nodes (Ethereum Sepolia Testnet Full (Virtuozzo, Frankfurt))Harmony Trader Nodes (Harmony Mainnet Full (Virtuozzo, Frankfurt))Ethereum Beacon (Ethereum Sepolia Testnet Beacon (Virtuozzo, Frankfurt))Gnosis Trader Nodes (Gnosis Chiado Testnet Full (Virtuozzo, Frankfurt))

Update timeline

  1. investigating Jul 31, 2026, 03:03 AM UTC

    Due to network maintenance, some chains may be temporarily inaccessible for a short period. Our team is working on the same. We apologize for any inconvenience caused.

  2. monitoring Jul 31, 2026, 03:38 AM UTC

    We implemented a fix and are currently monitoring the result.

  3. identified Jul 31, 2026, 04:42 AM UTC

    We are continuing to work on a fix for this incident.

  4. resolved Jul 31, 2026, 06:26 AM UTC

    This incident has been resolved.

  5. identified Jul 31, 2026, 06:51 AM UTC

    Nodes are unstable again. We are continuing to work on a fix for this incident.

  6. resolved Jul 31, 2026, 08:08 AM UTC

    This incident has been resolved.