{"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":"Decentralized identity authentication: Blockchain technology has decentralized characteristics and can achieve identity authentication without relying on centralized institutions, improving  the reliability and security of identity authentication."}]}],"pr":"125f22d6c66bddba9f69f9b4ceb680b16121e6dbed2cfdb299b64703cec8cabf"}