{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the specific steps for upgrading a blockchain?","a":"equirement analysis: Firstly, identify the goals and requirements for the upgrade, aiming to address the problems and shortcomings of the existing  blockchain system. This may include improving performance, enhancing security, and optimizing the user experience."}]}],"pr":"3a3da8c82cc9b280b025be84c5f681e06a57370075983ebdf4942330fd03d6cc"}