Exit proficiency: The proof of the pudding
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Proofs of Work and Bread Pudding
We formalize the notion of a proof of work (POW). In many cryptographic protocols, a prover seeks to convince a verifier that she possesses knowledge of a secret or that a certain mathematical relation holds true. By contrast, in a POW, a prover demonstrates to a verifier that she has performed a certain amount of computational work in a specified interval of time. POWs have served as the basis...
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