Hiro experienced a major incident on December 10, 2025 affecting Stacks Blockchain API and explorer.hiro.so, lasting —. The incident has been resolved; the full update timeline is below.
Affected components
Stacks Blockchain APIexplorer.hiro.so
Update timeline
- investigating Dec 10, 2025, 07:33 PM UTC
We are investigating an issue with the Mainnet API service that began at Dec 10, 2025, 2:33 PM 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.
- resolved Dec 10, 2025, 07:46 PM UTC
After review, we found some services were experiencing memory pressure, leading to a reduction in blocks processed by our Stacks Blockchain API. The memory pressure has been addressed, and this incident has been resolved.