{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied to digital identity verification?","a":"Data security: Blockchain technology has high security and can ensure that data in the identity authentication process is not tampered with. Each block contains the hash value of the previous block, forming a chain structure. Once the data in a block is changed, it will cause a chain reaction in subsequent  blocks, making it extremely difficult to tamper with the data."}]}],"pr":"8a8a7b015204fa890641f0a715a30e30bba3b5ec0ca52134c7abc990015dab75"}