Mainnet Stacks Blockchain API Errors

Incident Report for Hiro Systems

Resolved

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.
Posted Dec 10, 2025 - 14:38 EST

Investigating

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.
Posted Dec 10, 2025 - 14:33 EST
This incident affected: Services for Mainnet (Stacks Blockchain API) and explorer.hiro.so.