Starknet Mainnet Halts Blocks, Restores After Sequencer Fix

Source: DefiPlanet Original Title: Starknet Mainnet Halts Blocks, Restores After Sequencer Fix Original Link:

Quick Breakdown

• Starknet mainnet experienced downtime on January 5, 2026, with slow block creation freezing transactions for over 2 hours across dApps and wallets.
• Official announcement from Starknet confirmed: “Starknet is currently experiencing downtime. Our team is actively investigating the issue and working to restore full functionality as quickly as possible.”
• Status.starknet.io marked the sequencer-related incident resolved by 14:02 UTC; no funds lost, STRK rose 1.6% to $0.089.

Starknet, Ethereum’s Layer 2 zk-rollup solution, halted mainnet block production for more than two hours on January 5, 2026. Block explorers showed stalled execution blocked all transactions, affecting DeFi protocols, gaming apps, and emerging BTCFi use cases, with $840 million TVL steady.

Starknet is currently experiencing downtime. Our team is actively investigating the issue and working to restore full functionality as quickly as possible. Thank you for your patience.

Despite facing multiple outages, Starknet engineers successfully fixed a sequencer issue, resuming block production by 14:02 UTC. Crucially, no user funds were lost during the halt. The team identified the problem through status.starknet.io and deployed fixes swiftly.

The network, which boasts 264 million lifetime transactions and 56,000 active accounts with sub-cent fees, is now the focus of continued infrastructure hardening efforts. Meanwhile, centralized exchanges temporarily suspended STRK deposits.

Repeated outages test Layer 2 reliability

This incident caps a pattern of disruptions for Starknet in 2025 and beyond. September’s Grinta v0.14.0 upgrade triggered a 9-hour halt, chain reorgs, and reverted transactions from RPC mismatches and state bugs. An April 2024 outage lasted 4 hours due to capacity overload from a rounding error.

Starknet pushes decentralized sequencers to boost resilience, yet faces scrutiny against chains like Solana that withstood a 6 Tbps DDoS attack intact. Users reported no permanent access issues post-resolution, but frequent pauses raise questions for institutional adoption. The team continues hardening infrastructure amid Ethereum scaling demands.

As Starknet tackles outages, the industry focus remains on L2 scaling. Solutions using transaction bundling to minimize congestion highlight the race for resilient, high-efficiency, always-on decentralized networks.