{"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":"a52f1c4bb0d3dfe156c8a88607f47e7dc8121f5c50a507a70e5ea57b301b8d26"}