{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied in the field of digital identity authentication?","a":"Decentralized storage: Blockchain technology adopts a decentralized storage method, which can effectively  avoid the problems of personal information leaks and hacker attacks caused by centralized storage."}]}],"pr":"6afd999de0cdc9c6786c5d41c6ea55a3fbae66c5a5f45fd006f507e827c588d4"}