{"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":"8141e49192006cc34a2061822fc4700f196ab7ad1d9d2c4c9b73ae29a265acd4"}