Hiro incident

Mainnet Stacks Blockchain API Outage

Critical Resolved View vendor source →

Hiro experienced a critical incident on June 20, 2026 affecting Stacks Blockchain API and explorer.hiro.so, lasting 8h 47m. The incident has been resolved; the full update timeline is below.

Started
Jun 20, 2026, 04:04 AM UTC
Resolved
Jun 20, 2026, 12:52 PM UTC
Duration
8h 47m
Detected by Pingoru
Jun 20, 2026, 04:04 AM UTC

Affected components

Stacks Blockchain APIexplorer.hiro.so

Update timeline

  1. investigating Jun 20, 2026, 04:04 AM UTC

    We are investigating an issue with the Mainnet API service that began at Jun 20, 2026, 12:02 AM ET. Data retrieved from this API’s endpoints may be several blocks behind. The Stacks Explorer, wallets, and any services using the API may be impacted. We will share more details as additional information becomes available.

  2. resolved Jun 20, 2026, 12:52 PM UTC

    This incident has been resolved.