{"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":"756cd747b0f89acb896f149e07c53c80c1f604e0724fdbb4dc107e265672dc03"}