{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the unexpected situations that may occur during the blockchain upgrade process?","a":"Technical failures: During the upgrade process, hard forks, soft forks, and  other technical issues may arise, causing the blockchain system to malfunction."}]}],"pr":"579acf28aa05d0a1595590da0924ae170f56f5f3f2acc3f5097271d217232a8f"}