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<p>comparison to public hashes for signature creation and verification.</p>

<p><big> Hashing </big></p>
<p>Nonces are used in <a href="page.php?w=proof-of-work_system">proof-of-work system</a>s to vary the input to a <a href="page.php?w=cryptographic_hash_function">cryptographic hash function</a> so as to obtain a hash for a certain input that fulfils certain arbitrary conditions. In doing so, it becomes far more difficult to create a "desirable" hash than to verify it, shifting the burden of work onto one side of a transaction or system. For example, proof</p><p>
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