Outage in Hiro

Mainnet Stacks Blockchain API Errors

Resolved Major

December 11, 2025 - Started 4 months ago - Lasted about 4 hours
Official incident page

Incident Report

We are investigating an issue with the Mainnet API service that began at Dec 11, 2025, 10:57 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.

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Latest Updates ( sorted recent to last )

RESOLVED 4 months ago - at 12/11/2025 08:24PM

Upon review, we found some network instability within our infrastructure that was causing the Stacks Blockchain API to delay block ingestion. We believe to have found and resolved the underlying cause.

MONITORING 4 months ago - at 12/11/2025 04:19PM

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

INVESTIGATING 4 months ago - at 12/11/2025 04:01PM

We are investigating an issue with the Mainnet API service that began at Dec 11, 2025, 10:57 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.

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