{"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":"4094ae987f6818e42d87bc1a42b3d398fa3f36f04836158348a1aa7723a2779a"}