{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the security of transaction information?","a":"Cryptography: Blockchain uses cryptographic techniques to encrypt and  decrypt transaction data, ensuring the privacy and security of information."}]}],"pr":"cf8c2b766420db31bd34e73dbfea5dd9f419b30bb308026fc7ad5ecf343f171a"}