Ed Felten, co-founder and chief scientist at Offchain Labs, which developed Arbitrum, revealed that Arbitrum’s fraud proofs have not been invoked on its mainnet since its inception in August 2021. This indicates that no validator has challenged another over potential dishonesty or inaccuracies in transaction batches.
Ethereum’s layer-2 solutions, aimed at enhancing the primary Ethereum blockchain’s scalability and speed, have introduced a range of innovative mechanisms. Among these, the fraud-proof system stands out, especially in light of Arbitrum’s performance since its mainnet release.
Arbitrum, operating as an Ethereum layer-2, employs an interactive multi-round fraud proof system. Validators suspecting irregularities in transaction assembly can submit a fraud proof. A layer-1 verifier contract then evaluates this submission’s validity. Valid suspicions result in the fraudulenmt validator’s stake being slashed, providing a significant deterrent for potential malicious activities.
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