Outage in Hiro
Testnet Stacks Blockchain API Outage
Resolved MajorIncident Report
We are investigating degraded performance with the Stacks Blockchain API in Testnet that began at Dec 22, 2025, 2:53 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.
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Latest Updates ( sorted recent to last )
RESOLVED
20 days ago - at 12/22/2025 08:22PM
This incident has been resolved.
MONITORING
21 days ago - at 12/22/2025 08:05PM
A fix has been implemented and we are monitoring the results.
INVESTIGATING
21 days ago - at 12/22/2025 07:53PM
We are investigating degraded performance with the Stacks Blockchain API in Testnet that began at Dec 22, 2025, 2:53 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.
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
Mainnet Stacks Blockchain API Errors - 21 days ago
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