Hiro experienced a critical incident on November 18, 2025 affecting Stacks Blockchain API and explorer.hiro.so, lasting 4h 30m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Nov 18, 2025, 12:27 PM UTC
We are investigating an issue with the Mainnet API service that began at Nov 18, 2025, 7:27 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.
- monitoring Nov 18, 2025, 12:45 PM UTC
The issue has been identified as a Cloudflare network outage. We will continue to monitor the situation as Cloudflare remediates the issue. https://www.cloudflarestatus.com/incidents/8gmgl950y3h7
- monitoring Nov 18, 2025, 01:27 PM UTC
Cloudflare's outage is still impacting Hiro services. We will continue to monitor the situation to ensure our services are restored as soon as Cloudflare's incident is resolved.
- monitoring Nov 18, 2025, 02:21 PM UTC
Cloudflare's outage is still impacting Hiro services. We will continue to monitor the situation to ensure our services are restored as soon as Cloudflare's incident is resolved.
- monitoring Nov 18, 2025, 03:11 PM UTC
We are continuing to monitor for any further issues.
- resolved Nov 18, 2025, 04:58 PM UTC
This incident has been resolved.