{"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":"22d6d6f6a8f349e691815ae3201cb1e1ff5faf45329eeb876f78dd7936d6b9e8"}