{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The content of the software upgrade proposal is as follows:","a":"Upgrade steps: Detail the specific operation process of this upgrade,  including version upgrade, feature migration, data migration, etc."}]}],"pr":"9a3b3c1b8df6a0a76f5ceb4672bd2f179b06714df90b62df86433835f373304e"}