Permit
A signed authorization that lets someone submit an ERC-20 allowance change on the token owner's behalf.
In more detail
The owner signs a message instead of sending the usual approval transaction. ERC-2612 binds it to a spender, amount, nonce and deadline. Anyone can submit a valid permit under the standard, so signing can create meaningful spending permission even when no token transfer happens immediately.
How you might use it
You sign a permit for a named spender and limited amount; a relayer submits it to record the allowance onchain.
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