{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of a wallet in a blockchain?","a":"Enhancing transaction efficiency and security: Through encryption technology and distributed ledgers, blockchain wallets improve the security and efficiency of transactions, reducing the trust  cost in traditional financial transactions."}]}],"pr":"4087a6c4e3b490871e92e6d0ef6e62ebe85e46d1c290cba47735b94bc0660dcc"}