Outage in Starknet

Starknet mainnet – slow block creation alert

Resolved Major

January 05, 2026 - Started about 1 month ago - Lasted about 4 hours
Official incident page

Incident Report

Starknet is taking longer than expected to produce a block.

Components affected

Starknet Mainnet

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Latest Updates ( sorted recent to last )

RESOLVED about 1 month ago - at 01/05/2026 02:02PM

This incident has been resolved.

IDENTIFIED about 1 month ago - at 01/05/2026 01:23PM

The issue was identified and tested.
A new blockifier version is released, chain is reverted to block 5187263

INVESTIGATING about 1 month ago - at 01/05/2026 10:42AM

The team still investigate the reason for discrepency between the execution of the block to the proving logic. Concrete transaction and differences have been detected and we are debugging for the reasons

INVESTIGATING about 1 month ago - at 01/05/2026 09:53AM

Starknet is taking longer than expected to produce a block.

Latest Starknet outages

Starknet testnet (Sepolia) – slow block creation alert - 5 days ago

Starknet testnet (Sepolia) – slow block creation alert - 3 months ago

Block on Starknet testnet can't be proven - 3 months ago

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