Chainstack incident

Ethereum Mainnet Beacon Endpoint Instability

Minor Resolved

Chainstack experienced a minor incident on June 30, 2026 affecting Ethereum Beacon (Ethereum Mainnet Beacon), lasting 1h 30m. The incident has been resolved; the full update timeline is below.

Started
Jun 30, 2026, 09:39 PM UTC
Resolved
Jun 30, 2026, 11:10 PM UTC
Duration
1h 30m
Detected by Pingoru
Jun 30, 2026, 09:39 PM UTC

Affected components

Ethereum Beacon (Ethereum Mainnet Beacon)

Update timeline

  1. investigating Jun 30, 2026, 09:39 PM UTC

    We are currently investigating this incident.

  2. resolved Jun 30, 2026, 11:10 PM UTC

    We have resolved the issue affecting performance of our Ethereum Mainnet Beacon nodes. The root cause has been traced to internal queue exhaustion for archive BeaconState execution. The response times have returned to normal and the service is stable.