{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to ensure the security of the validator's operation environment in the blockchain?","a":"Employ multi-signature technology to ensure  the security of transactions and prevent unauthorized"}]}],"pr":"d7caedcbed42db5bcb2dbdd619ff0831f9a9b8b1dfbb71cf78f156c2bc628cd2"}