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2026-09-24

Can ZK proofs enable multi-block flash loans?

Disclaimer

• Thinking aloud, may not endorse after a lot of thought

Main

• What if a contract can use a ZK proof to prove that no matter what happens, after N blocks the lender is guaranteed to be able to recover their funds?
• You will need a standard lender contract that verifies ZK proofs. Borrowers can submit any contract they wish along with a ZK proof about the behaviour of this contract.
• If this idea actually works, then multi-block flash loans could open up all sorts of new attack vectors.

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