Hiro incident

Testnet Stacks Core Errors

Critical Resolved View vendor source →

Hiro experienced a critical incident on June 3, 2026 affecting Stacks Blockchain API, lasting 2h 1m. The incident has been resolved; the full update timeline is below.

Started
Jun 03, 2026, 10:58 AM UTC
Resolved
Jun 03, 2026, 01:00 PM UTC
Duration
2h 1m
Detected by Pingoru
Jun 03, 2026, 10:58 AM UTC

Affected components

Stacks Blockchain API

Update timeline

  1. investigating Jun 03, 2026, 10:58 AM UTC

    We are investigating an issue with the Testnet Stacks Blockchain Seed Node that began at Jun 3, 2026, 6:28 AM ET. Data retrieved from this API’s endpoints may be several blocks behind. The Stacks Explorer, wallets, and any services using the Testnet API may be impacted. We will share more details as additional information becomes available.

  2. monitoring Jun 03, 2026, 11:22 AM UTC

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

  3. resolved Jun 03, 2026, 01:00 PM UTC

    This incident has been resolved.