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Conceptnonce / Number Used Once

Nonce

A nonce is a random value used only once, typically generated by the verifier and embedded in the message to be signed. Its core purpose is to prevent replay attacks, ensuring that a signature is valid only for a specific event or transaction.

Timeline (last 90 days)

Oct 16

The Uspeaks registry requires: an approved issuer signature over the asset payload, and an owner signature over the registration intent; issuer keys are explicitly registered and can be revoked; and the owner's signing intent carries a nonce to prevent replay.

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Oct 16

A nonce is a single-use random value, typically generated by the verifier and embedded in the message to be signed, whose core purpose is to prevent replay attacks.

Unverified50%

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