{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology improve digital identity protection?","a":"Private key protection: By using private keys to encrypt and decrypt data, only users who possess the private key can access and process the  data, thereby enhancing data security."}]}],"pr":"2364dcf2ef03b09ee226a948f4b23315b6437576937839a44a5211c7d0f79b05"}