{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do durable nonces in blockchain serve offline signature transactions?","a":"Preventing Replay Attacks: A replay attack refers to the act of an attacker capturing and re-transmitting unauthorized transactions to deceive the  system. By using a persistent nonce in a transaction, it ensures that each transaction has a unique identifier, making it difficult for attackers to re-send processed transactions."}]}],"pr":"68f28c5df4eb196e5043b90aa4b29b45023bf2c2a59796b03c419e136bf3c7c8"}