{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the specific contents of a software upgrade proposal?","a":"Upgrade process: Detailed description of various stages  in the upgrade process, such as upgrade preparation, upgrade execution, upgrade verification, etc."}]}],"pr":"ec36bc616ad8983c0f3264cd56529743f3abdfd893fd3645e41818857f626fe0"}