what is nonce?

a counter that makes each signature or transaction usable only once.

a signed but unused permit stays valid until its deadline or until its nonce is used up on-chain.

related words

permit signature a free, off-chain signature that works like an approval once someone submits it (on tokens and apps that support it).
blind signing approving a transaction or message your wallet cannot show in readable form.
revoke cancelling a wallet approval on the blockchain: setting it back to zero, or for NFTs, switching it off.

part of the topic scams: free articles, more words and the guide.

checked 2026-10-20. education, not advice. found a mistake? see corrections.