Use cases
Software Products E-commerce MSPs Schools Development & Marketing DevOps Agencies Help Desk
Company
Internet Status Blog Pricing Log in Get started free

Circle Outage History

Every past Circle outage tracked by IsDown, with detection times, duration, and resolution details.

There were 394 Circle outages since July 2020. The 125 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major May 28, 2026

May 2026: USDC CCTP attestations paused on Monad

Detected May 28, 2026 9:35 PM EDT · Resolved May 28, 2026 10:10 PM EDT · Duration 36 minutes

Circle temporarily paused USDC attestations on Monad through their Cross-Chain Transfer Protocol (CCTP) for maintenance purposes. This affected users' ability to burn USDC tokens on the Monad network via CCTP during the outage. The service was restored after 36 minutes of downtime.

Major May 28, 2026

May 2026: CCTP on SUI Delayed mints, burns, and transfers

Detected May 28, 2026 10:38 AM EDT · Resolved May 29, 2026 12:11 AM EDT · Duration about 14 hours

Circle's CCTP service experienced a major incident where USDC mints, burns, and transfers on the SUI network were significantly delayed due to network congestion and an active incident on SUI Mainnet. The delays affected all SUI operations for 13.6 hours until the underlying SUI network issues were resolved. Circle worked on updates to improve processing speed while monitoring the external SUI network incident.

Major May 25, 2026

May 2026: SEI mainnet degraded performance

Detected May 25, 2026 4:43 AM EDT · Resolved May 25, 2026 5:30 AM EDT · Duration about 1 hour

Circle's SEI mainnet experienced degraded performance for 47 minutes, classified as a major incident. The service team investigated and resolved the performance issues. The incident was fully resolved without further details provided about the specific cause or affected functionality.

Minor May 22, 2026

May 2026: xReserve Stacks Testnet Delays

Detected May 22, 2026 2:26 PM EDT · Resolved May 23, 2026 12:38 AM EDT · Duration about 10 hours

Circle's xReserve service on Stacks Testnet experienced degraded performance for 10.2 hours, causing temporary delays in withdrawal processing. The incident affected users attempting to withdraw funds through the testnet environment. The service was fully restored and the incident was resolved.

Major May 20, 2026

May 2026: USDC CCTP attestations paused on Solana

Detected May 20, 2026 7:48 PM EDT · Resolved May 20, 2026 9:03 PM EDT · Duration about 1 hour

Circle temporarily paused USDC attestations for burns on Solana through their Cross-Chain Transfer Protocol (CCTP) for maintenance purposes. This major incident affected cross-chain USDC transfers involving the Solana network for 1.3 hours. The service was restored after the maintenance was completed.

Major May 20, 2026

May 2026: CCTP on XDC maintenance

Detected May 20, 2026 7:27 AM EDT · Resolved May 20, 2026 8:22 AM EDT · Duration about 1 hour

Circle temporarily paused USDC burn attestations on the XDC network through their Cross-Chain Transfer Protocol (CCTP) for scheduled maintenance. The maintenance affected cross-chain USDC transfers involving the XDC blockchain for 55 minutes. The service was restored after the maintenance was completed.

Major May 19, 2026

May 2026: SEI block processing issue

Detected May 19, 2026 6:13 PM EDT · Resolved May 19, 2026 6:44 PM EDT · Duration 32 minutes

Circle experienced unexpected network issues affecting the SEI mainnet that caused delays in CCTP (Cross-Chain Transfer Protocol) attestation processing. The incident was classified as major and impacted block processing on the SEI network. The issue was resolved after 32 minutes of investigation and remediation.

Minor May 15, 2026

May 2026: CCTP on AVAX Maintenance

Detected May 15, 2026 7:35 AM EDT · Resolved May 15, 2026 8:03 AM EDT · Duration 28 minutes

Circle temporarily paused attestations for USDC burns on the Avalanche network through their Cross-Chain Transfer Protocol (CCTP) for scheduled maintenance. The maintenance affected cross-chain USDC transfers involving the AVAX network for 28 minutes before normal operations resumed.

Minor May 9, 2026

May 2026: Solana Processing Block Issue

Detected May 9, 2026 8:34 AM EDT · Resolved May 9, 2026 9:52 AM EDT · Duration about 1 hour

Circle experienced a Solana processing block issue that caused technical difficulties and temporary delays for USDC deposits, withdrawals, mints, and burns on the Solana network. The incident affected the platform's minting and redeeming components for 1.3 hours. The issue was resolved after investigation and remediation efforts.

Minor May 7, 2026

May 2026: CCTP attestation delay for all blockchain

Detected May 7, 2026 11:58 PM EDT · Resolved May 8, 2026 11:57 AM EDT · Duration about 12 hours

Circle experienced CCTP (Cross-Chain Transfer Protocol) attestation delays across all blockchains due to AWS service degradation. The incident lasted 12 hours and affected cross-chain transaction processing. The issue was resolved after Circle addressed the underlying AWS-related problems.