How Do Fraud Proofs in Optimistic Rollups Work to Secure Funds?

Fraud proofs are a mechanism where a challenger can submit a proof to the Layer 1 chain demonstrating that an off-chain state transition was invalid. This happens during a designated 'challenge period' after a batch of transactions is posted.

If the fraud proof is successful, the invalid state is reverted, and the staker who submitted the incorrect state is penalized, usually by slashing their staked collateral. This economic incentive and penalty system ensures honest behavior.

What Is the Fundamental Difference between an Optimistic Rollup and a ZK-Rollup?
What Is the Trade-off in Computational Complexity between the Two Rollup Types?
What Is the Primary Difference between Optimistic Rollups and ZK-Rollups?
What Is the Security Trade-off Associated with the Challenge Period in Optimistic Rollups?
How Do “Fraud Proofs” Work and What Are Their Limitations?
How Do “Fraud Proofs” Work in Optimistic Rollups?
What Is the Potential Vulnerability If a Fraud Proof Is Submitted Incorrectly?
What Are ‘Rollups’ (Optimistic and ZK) and How Do They Use Batching?

Glossar