{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What actions should be taken if the blockchain upgrade is not successful?","a":"Analyze the reasons: Firstly,  a comprehensive analysis of the reasons for the failed upgrade is needed, including technical issues, code vulnerabilities, consensus algorithms, etc., to identify the problem."}]}],"pr":"da1c878f222079085cb3c50816603f6b72b3cc3bd6e99b6179213707789ec17d"}