{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the purposes of using cryptographic technology in blockchain?","a":"Data Privacy Protection: Utilizing asymmetric encryption technology, achieving privacy protection for account addresses and transaction data. Asymmetric  encryption technology allows users to encrypt data through public keys, and only users holding private keys can decrypt the data. This helps prevent data from being intercepted and tampered with during transmission."}]}],"pr":"5c93daf7a93ef4cd6a1e06ac56d9404e6c2349544337a7cc6864e79166dbf24c"}