Circle incident

Circle CCTP Testnet - Delays/Degraded Performance

Circle experienced a major incident on September 21, 2026 affecting Circle CCTP - Sandbox, lasting 9h 21m. The incident has been resolved; the full update timeline is below.

Started: Sep 21, 2026, 03:08 PM UTC
Resolved: Sep 22, 2026, 12:29 AM UTC
Duration: 9h 21m
Detected by Pingoru: Sep 21, 2026, 03:08 PM UTC

Affected components

Circle CCTP - Sandbox

Update timeline

investigating Sep 21, 2026, 03:08 PM UTC

We have identified an issue causing delays or degraded performance on Circle's Cross-Chain Transfer Protocol (CCTP) Sandbox. Some customers may experience slower transaction confirmations or partial unavailability. Our team is investigating the root cause and working to restore normal operation as soon as possible.
investigating Sep 21, 2026, 03:50 PM UTC

We have identified an issue causing delays or degraded performance on Circle's Cross-Chain Transfer Protocol (CCTP) Testnet. Some customers may experience slower transaction confirmations or partial unavailability. Our team is investigating the root cause and working to restore normal operation as soon as possible.
resolved Sep 22, 2026, 12:29 AM UTC

This incident has been resolved.