{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What should be noticed after modifying blockchain data?","a":"Transparency: After modifying the data, follow  the transparency principle of blockchain to ensure that users can check the updated data."}]}],"pr":"ff0790a796e9a0d63e0b835ddcbfb1ecc8ff419075a8436c6013487304700926"}