{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied to identity verification?","a":"Public key and private key encryption: Users on the blockchain  possess a public key and a private key. When verifying identity, users use their private key to encrypt identity information, and the corresponding public key is used to decrypt the information. This ensures the security and privacy of identity data."}]}],"pr":"d069bb26da85d1a112120db4df6c0027e4feb81de903a09f67dd6eb94adb262c"}