{"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 verification?","a":"Unalterable identity information: Blockchain technology has the characteristic of data unalterability. Once identity information is stored on the blockchain, it cannot be tampered with or misused. This effectively ensures  the security and authenticity of user identity information."}]}],"pr":"1b5de7f51f203ffc461295e3480ad63a4874ac25a2ee5d5d72ffe980dff1c720"}