{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain be applied in the field of digital identity authentication?","a":"Data security: Blockchain adopts encryption algorithms such as hash functions and digital signature technologies to ensure the security of data during transmission and storage."}]}],"pr":"30f7b7d8148932a163360602f2becea6089600f7dc0841b04f0a89970dc7e28f"}