Summary
Ketju does not approve the Linea bridge: L2Beat reports that Linea's contracts can be upgraded instantly, with no window for users to withdraw before an unwanted upgrade, and Linea has no plan for a sequencer failure. We found no defect in the proof system. Linea is ConsenSys's zkEVM rollup. Its SNARK validity proofs clear withdrawals in 2 to 12 hours instead of seven days, because there is no fraud-proof challenge period. That beats every optimistic bridge Ketju reviews. Linea's governance rating is worse than that of every other bridge Ketju reviews. That includes the OP Stack chains and Lighter, which Ketju does not approve; each at least keeps some standing delay or forced withdrawal route. Linea has also shown the risk this creates. In June 2024 the Linea team halted block production on its own for about an hour during a third-party exploit. One party used its discretion to stop the whole chain.
Review triggers
- A minimum standing delay, even of 24 to 72 hours, is added between a Security Council upgrade approval and its execution
- A plan for sequencer failure or censorship is put in place that does not depend on the current recovery route of roughly six months after a proposer freeze
- The Security Council's signer count and threshold are publicly confirmed and can be verified independently on-chain
- Twelve months in a row with no halt of block production decided by the Linea team or Association alone
Facts
- Verdict
- Not approved
- Type
- Other
- Chains examined
- Ethereum
- Reviewed
- Last confirmed