{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain be applied to the management of digital identity?","a":"Decentralized storage and verification: When a file is written into the blockchain system, its authenticity has been confirmed by the  nodes in the network. This means that an ordered declaration from multiple users supports the effectiveness of all recorded information, thereby improving the security and credibility of the data."}]}],"pr":"b7434a2d434f55baa386ce13f5c14139503e0c2e5313cc2ce6b9e0820d17fcd3"}