Sui Network Restored After Six-Hour Outage Halts Block Production

• Sui’s mainnet stalled for nearly six hours, halting block production and freezing all on-chain activity.
• Validators restored the network later the same day, with a full incident report still pending.
• Despite the outage, on-chain assets and the SUI token showed limited immediate impact.

The Sui Mainnet suffered a network disruption that stopped block production and brought all on-chain activity to a standstill for nearly six hours. Checkpoint generation ceased during the incident, preventing transactions from being processed and halting state updates across the blockchain.

The Sui core team confirmed the issue shortly after it emerged, stating that consensus had stalled. Data from network explorers showed no new checkpoints being produced, indicating that block finalisation had fully stopped. As a result, transactions submitted during the outage remained pending, limiting user interaction across applications built on the network.

The disruption extended across the wider Sui ecosystem, with decentralised applications and infrastructure services reporting performance degradation. Platforms such as SuiScan experienced delayed or failed responses as real-time data updates paused. Developers acknowledged the situation but did not provide interim solutions while the network remained inactive.

Related: Sui Launches USDsui Stablecoin with Stripe-Owned Bridge for Compliant, Cross-Chain Payments

Network Operations Resume After Validator Update

Developers later confirmed that a fix was being deployed, although no immediate explanation or recovery timeline was shared at that stage. 

Subsequent status updates showed that validators had implemented the fix and that normal network operations had been restored later the same day. Following the recovery, the Sui Foundation said a full incident report would be released in the coming days.

At the time of the outage, the Sui network secured just over US$1 billion (AU$1.51 billion) in on-chain assets. That total had fallen from approximately US$2.6 billion (AU$3.93 billion) in October before declining below US$1 billion (AU$1.51 billion) in early December, ahead of a gradual recovery this year. 

Despite the interruption, the SUI token showed limited volatility, trading at around US$1.85 (AU$2.79) after services resumed.

Related: Australia’s Crypto Industry Enters Its “Training Phase” as Regulation Turns Real

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