Outage in Hiro
Mainnet Stacks Blockchain API Errors
Resolved MajorIncident 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
about 1 month 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
about 1 month ago - at 12/11/2025 04:19PM
A fix has been implemented and we are monitoring the results.
INVESTIGATING
about 1 month 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.
Latest Hiro outages
Mainnet Stacks Blockchain API Errors - about 18 hours ago
Mainnet Stacks Core Outage - 9 days ago
Mainnet Stacks Blockchain API Errors - 16 days ago
Mainnet API Block Progression Stalled - 18 days ago
Testnet Stacks Blockchain API Outage - 21 days ago
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