{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the risks involved in the blockchain upgrading process?","a":"Data security risks: Security risks such as data loss and data tampering may occur during the upgrade process, threatening the reliability and  security of the blockchain."}]}],"pr":"a14c201d48c9ca11568b602c017202627deaa22d81b2108e42e92cc1778b9bed"}