Ethereum (ETH) layer-2 network Starknet restored service following a four-hour outage that halted block production Monday.

The zero-knowledge rollup network stopped processing transactions for more than four hours before operations resumed.

Starknet warned that transactions submitted between 9:24 a.m. and 9:42 a.m. UTC may not have been processed correctly.

The team said a detailed retrospective including root cause analysis and prevention measures will be published.

What Happened

Starknet confirmed the outage Monday afternoon via X, stating engineers were investigating the issue.

Block production completely halted during the disruption.

The network's status page initially reported slow block creation before the full stoppage.

No official cause was disclosed at the time of service restoration.

This marks Starknet's second major outage in approximately four months.

The previous incident occurred September 2, 2025 following the network's Grinta upgrade, which introduced decentralized sequencer architecture.

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Why It Matters

Network downtime disrupts decentralized finance applications including stalled swaps, delayed withdrawals and difficulty updating positions.

Starknet operates as a sequencer-based network where transaction ordering depends on a smaller set of operators than Ethereum's base layer.

The STRK token price remained relatively stable during the outage, trading at approximately $0.089 with gains around 1.6% over 24 hours.

Total value locked on Starknet stands at more than $266 million according to industry data.

Repeated disruptions raise questions about operational reliability as layer-2 networks become critical infrastructure for Ethereum scaling.

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