Nonce

Advanced programming

In cryptography, a nonce is an arbitrary number that can be used just once in a cryptographic communication.

A nonce is an abbreviation for "number only used once," which is a number added to a hashed—or encrypted—block in a blockchain that, when rehashed, meets the difficulty level restrictions. The nonce is the number that blockchain miners are solving for.

A unit of abstract mathematical system subject to the laws of arithmetic.