Alchemy incident

Base Mainnet Webhook Delivery Delays

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Resolved after 9 hours 24 minutes, affecting Base, on May 21, 2026.

resolved May 21, 2026, 09:25 PM UTC

Our system finished backfilling all events around May 21 14:40 UTC. Service has since returned to normal.

Started
May 21, 2026, 05:15 AM UTC
Resolved
May 21, 2026, 02:40 PM UTC
Duration
9h 24m
Detected by Pingoru
May 21, 2026, 05:15 AM UTC

Affected components

Base

Update timeline

  1. investigating May 21, 2026, 09:24 PM UTC

    Between 05:00 - 07:00 UTC on May 21, 2026, Alchemy's Base Mainnet webhook delivery experienced delays. Customers may have received delayed webhook notifications during this time.

  2. resolved May 21, 2026, 09:25 PM UTC

    Our system finished backfilling all events around May 21 14:40 UTC. Service has since returned to normal.

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