{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be used to manage digital identity?","a":"User registration: Users register on the blockchain  platform and fill in complete personal information."}]}],"pr":"325a23318557b1da8f7e69504abfb4013f390c0006f5d281a38fbf6b69bb79eb"}