{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology achieve joint authentication?","a":"Data encryption: In order to protect the privacy and security of user data, blockchain technology uses encryption algorithms to encrypt the identity data stored on the distributed  ledger. Only users with the corresponding private key can decrypt and access their own data."}]}],"pr":"08089b72aee51046a1a93767fdcd3c1b7528e5983bc96f888929177bc5bf7804"}