{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do validators in a blockchain prove their identity and background?","a":"Obtain identity information: Validators  need to obtain a personal identity certificate, which usually"}]}],"pr":"04425d86a63451286d928922b681c9dd8f62cbdff4b296b9ec5a3de9dde873d3"}