{"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 strategy: Develop a reasonable upgrade plan, including upgrade time,  upgrade steps, risk assessment, etc."}]}],"pr":"f538d3a4d5d7d662d34e32e091d716962108c33241faee83acfa6a4b2e7dfdd1"}