Ethereum nonce explained
Nonce is a one-time transaction code (the number that can only be used once). The first transaction sent from a specific address will have nonce 0, the second — nonce 1, etc.
✔️ Nonce helps miners determine which transaction should be processed first.
✔️ If there is a problem with transaction 0, the next transaction will not be completed.
✔️ Nonce helps avoid double-spending.