{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the operational steps required for a successful blockchain upgrade path?","a":"Solution design: According to the results of demand and technical research, design a detailed upgrade plan, including upgrade content, technology selection,  and key technology implementation."}]}],"pr":"f20c70833c46c63b0453e68c5b7d5a2d2a84fc19db267d0aa37556369dd6f92e"}