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Bring fraud proofs to Bitcoin, Part II - L2IV Research

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BitVM and OP_CAT with fraud proofs

In the previous article we talked about fraud proofs in general, especially how optimistic rollups (such as Arbitrum and Optimism) and how optimistic ZK proofs (such as Kailua) work, and the different tradeoffs inherent to fraud proof systems. Fraud proofs are basically computation that can be publicly disputed before the computation goes into effect (i.e., after withdrawal period). To make the computation publicly disputable, there are two key requirements: (1) efficient on-chain challenge, in that the computation can be disputed on-chain, and (2) data availability, in that the public can…

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