{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the precautions to consider during the blockchain upgrade process?","a":"Ensure code quality: During the upgrade process,  conduct strict reviews and tests on the code to ensure the stability, security, and scalability of the new version."}]}],"pr":"9f06e3f8e2459a8ff399b67fab26d56cf5ec83286295c2d8fceed1ef242153ea"}