{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the risks of blockchain upgrading?","a":"Technical risks: During the upgrade process, technical failures such as code errors and security vulnerabilities may occur in the blockchain system, thereby affecting its stability  and security."}]}],"pr":"77a56282b7ede4f1c6eb0d69b297ffbbbfb6a9f2fb52a4ec25a1178b8d1a88fa"}