{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to handle risks during the blockchain upgrade process?","a":"Security assurance: Strengthen the protection of network  security to prevent malicious attacks during the upgrade process and prevent unauthorized access and data leaks."}]}],"pr":"3100748cd4255717ec0b6fe051953e3f1180c5892b8729658c60b7c32a5ee085"}