{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is a nonce account in a blockchain?","a":"The nonce (Number Used Once) account in blockchain is an important concept used in Ethereum transactions to prevent double-spending attacks. It is a continuous integer that is generated when each account sends a transaction. The main role of the nonce account in Ethereum transactions is to ensure the uniqueness of each transaction, thereby avoiding double-spending attacks. When a user sends a transaction, the value of the nonce account increases as the transaction is sent. In building transactions, the nonce account can be used to cover  transactions with the same nonce in the transaction pool, ensuring the transaction order and uniqueness.\n\nIn Bitcoin, the nonce account is mainly used to adjust the mining difficulty."}]}],"pr":"8429991fdcdc37d8e69e6a4284e10de933355def762e836b2946c1c8552618e6"}