{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain address data privacy and confidentiality issues?","a":"Cryptographic protection: The data encryption technology in blockchain ensures data privacy. Through the use of public keys and private keys, only users holding the private key can decrypt the corresponding data, ensuring the security of data  transmission and storage."}]}],"pr":"0b8bc201bc6a99abe554d7958e90f7ff733c8c6e9df8c2a26bbdcb6d1d43a584"}