{"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":"b32c148d1dc9e784ce070efe0dce04a016f485ee607abda8547edde6715f48c4"}