Starknet, the Ethereum layer-2 scaling solution, faced another major disruption on Tuesday when its mainnet went offline for nearly three hours. The outage lasted two hours and 44 minutes, during which block production slowed significantly and transactions on the network came to a standstill.
Layer-2 networks are secondary blockchains built on Ethereum’s mainnet to handle transactions off-chain, boosting both speed and capacity.
According to the official status page, the problem stemmed from Starknet’s sequencer, the component responsible for ordering and processing on-chain transactions. The sequencer reportedly failed to recognize the “Cairo0 code,” which led to the network stall.
The repeated downtime has sparked concern among investors about Starknet’s reliability as the blockchain continues to position itself as a key scaling layer for Ethereum.
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Starknet restored full functionality in under three hours, according to a post on its community-run X account on Tuesday, which added:
As a result, every transaction made after that block must be resubmitted by users. The team noted that a detailed timeline, along with the root cause and long-term fixes, will be shared soon.
This marked the second major outage in less than two months, a pattern that has sparked concern among investors. The incident comes at a critical time, as Starknet is currently ranked as Ethereum’s seventh-largest L2 network, with about $548 million in total value locked (TVL), according to L2Beat.
