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Circle Outage History

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

There were 385 Circle outages since July 2020. The 120 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major April 1, 2026

April 2026: Circle Forwarding Service degraded performance on Avalanche

Detected Apr 1, 2026 3:30 AM EDT · Resolved Apr 1, 2026 3:47 AM EDT · Duration 16 minutes

Circle's Forwarding Service on the Avalanche network experienced degraded performance for 16 minutes, causing slower transaction confirmations and partial service unavailability for some customers. The team investigated and identified the root cause of the delays. The service was restored to normal operation.

Major March 30, 2026

March 2026: Delayed transactions on Moprh

Detected Mar 30, 2026 12:39 PM EDT · Resolved Mar 30, 2026 10:45 PM EDT · Duration about 10 hours

Circle experienced a major service incident where USDC mints and burns on the Morph network were delayed due to network issues. The incident lasted 10.1 hours and affected users' ability to process USDC transactions on the Morph blockchain. The issue was resolved after investigation and remediation efforts.

Minor March 25, 2026

March 2026: Linear Delays

Detected Mar 25, 2026 1:01 PM EDT · Resolved Mar 30, 2026 1:17 PM EDT · Duration 5 days

Circle experienced degraded performance for both inbound and outbound transactions on Linea mainnet due to an upstream incident on the Linea network that caused transaction finalization delays. The issue affected transaction processing speeds on Linea mainnet for approximately 5 days. The incident was resolved once the underlying Linea network issue was fixed.

Major March 25, 2026

March 2026: [Circle Wallet][CCTP] - Delays (Network Issues)

Detected Mar 25, 2026 10:00 AM EDT · Resolved Mar 27, 2026 6:32 AM EDT · Duration 2 days

Circle Wallet experienced network issues affecting the Sonic chain that caused transaction delays and degraded performance for 44.5 hours. The incident impacted the Cross-Chain Transfer Protocol (CCTP) functionality within the wallet service. The team investigated and resolved the underlying network problems, restoring normal operations.

Major March 23, 2026

March 2026: Arbitrum Sepolia Network Issue

Detected Mar 23, 2026 1:29 PM EDT · Resolved Mar 24, 2026 3:58 AM EDT · Duration about 14 hours

The Arbitrum Sepolia network experienced a complete outage that affected all operations on the network for 14.5 hours. Circle's services dependent on Arbitrum Sepolia were impacted during this period. The incident was resolved once the Arbitrum Sepolia network was restored.

Major March 22, 2026

March 2026: SEI Mainnet Performance Degradation

Detected Mar 22, 2026 5:14 AM EDT · Resolved Mar 22, 2026 9:08 PM EDT · Duration about 16 hours

The SEI Mainnet experienced a complete network outage that affected all SEI operations on Circle's platform. The incident lasted 15.9 hours, during which users were unable to perform any SEI-related transactions or operations. The network was fully restored and all SEI operations resumed normal functionality.

Major March 20, 2026

March 2026: USDC on Morph Delayed mints, burns and sends

Detected Mar 20, 2026 8:22 PM EDT · Resolved Mar 20, 2026 9:18 PM EDT · Duration about 1 hour

Circle experienced a major incident where USDC transactions on the Morph network were significantly delayed, affecting users' ability to mint, burn, and send USDC tokens. The service disruption lasted 56 minutes before being fully resolved. The incident was resolved after investigation and remediation efforts by the Circle team.

Major March 16, 2026

March 2026: CCTP attestation delay for all testnet blockchain

Detected Mar 16, 2026 11:35 PM EDT · Resolved Mar 17, 2026 1:40 AM EDT · Duration about 2 hours

Circle's CCTP (Cross-Chain Transfer Protocol) attestation service experienced delays across all testnet blockchains for 2.1 hours. The issue affected cross-chain transaction processing and validation on testnet environments. The attestation delay was identified and subsequently resolved by the Circle team.

Major March 16, 2026

March 2026: CCTP attestations for Arc-Testnet is currently unavailable

Detected Mar 16, 2026 1:20 AM EDT · Resolved Mar 16, 2026 3:54 PM EDT · Duration about 15 hours

Circle's CCTP attestations for Arc Testnet became unavailable, preventing cross-chain token transfers on the testnet environment. The service outage lasted 14.6 hours while the team investigated the root cause. The CCTP attestations service was fully recovered and restored to normal operation.

Major March 13, 2026

March 2026: HyperEVM testnet is stuck

Detected Mar 13, 2026 1:26 AM EDT · Resolved Mar 13, 2026 3:06 AM EDT · Duration about 2 hours

The HyperEVM Testnet experienced a complete network outage that affected all HyperEVM operations for 1.7 hours. The incident was resolved by restoring the HyperEVM network, allowing normal operations to resume.