{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the potential risks of blockchain upgrading?","a":"Data security risks: During the  upgrading process, data loss or leakage may occur, posing a threat to user privacy and assets."}]}],"pr":"25cd08cc403f2cf07820e408f805a7517201005fff06ad3254d358a9556e0ac7"}