{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the risks involved in the process of upgrading the blockchain version?","a":"Data loss risks: In the process of version upgrading, data loss may occur, which will result in incomplete historical records of the blockchain  and affect its value."}]}],"pr":"e19d434739d25a7be8c8d240d18c68d3effb0dca7b8579f718b45d30e7efe0b6"}