{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the risks of blockchain upgrading?","a":"Data loss risks: During the upgrade process, data loss may occur, which will lead to incomplete historical  records of the blockchain and affect its credibility."}]}],"pr":"d237f5bd0464547a18696cbed55a57525419632e9192747489efddb96cc62d1c"}