{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the applications of blockchain technology in the field of digital identity authentication?","a":"Digital identity identification: Digital identity authentication systems based on blockchain technology can generate unique  digital identity codes for each user, making it convenient for identity verification and authorization."}]}],"pr":"edddcb121d3b6422ec1cfe2b58b718d983d41aa89e52a4d59336eaaa92867ba5"}