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Starknet, a prominent Ethereum Layer-2 scaling solution, experienced its second significant mainnet outage in just two months on Tuesday. The disruption lasted for nearly three hours, impacting block creation and halting transactions, raising questions about the network's reliability among investors and users.
Key Takeaways
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Starknet's mainnet was down for 2 hours and 44 minutes due to an issue with its sequencer.
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The outage was caused by the sequencer's inability to recognize "Cairo0 code."
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This marks the second major outage within two months, following a 13-minute disruption on July 18.
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Transactions submitted during the outage window (2:23 am - 4:36 am UTC) were not processed, and an hour of activity was lost due to blockchain reorganization.
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Starknet has since restored full functionality, but a detailed timeline and prevention measures are expected.
Network Disruption Details
The outage, which began on Tuesday, saw the Starknet sequencer, responsible for ordering transactions for inclusion in blocks, fail to recognize the "Cairo0 code." This led to a halt in block production and a stagnation of network activity for approximately two hours and 44 minutes.
Impact on Users and Transactions
During the downtime, transactions submitted between 2:23 am and 4:36 am UTC were not processed. A blockchain reorganization from block 1960612 resulted in the loss of about one hour of activity. Users whose transactions fell within this window will need to resubmit them. The Starknet team announced that block production has returned to normal and most RPC providers are operational, with the remaining ones expected to upgrade shortly.
Reliability Concerns and Future Outlook
This incident is the second major outage for Starknet in less than two months, following a shorter 13-minute disruption on July 18. As the seventh-largest L2 network by total value locked (TVL), with $548 million according to L2beat.com, these recurring issues have fueled concerns about Starknet's overall network stability and reliability. Starknet utilizes ZK-rollups to enhance Ethereum's transaction speed and capacity. The team has committed to publishing a full timeline of the event, including the root cause and long-term prevention strategies.
Sources
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Ethereum L2 Starknet suffers 2nd Mainnet Outage within 2 months, Cointelegraph.
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