{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the dangers of blockchain upgrading?","a":"Data loss risks: During the blockchain upgrade process, data loss may occur. For example, in the case of a hard fork, some old nodes may not be compatible with the  new version, causing data loss and disruptions to the network."}]}],"pr":"674708d41c9c9d0c6752c15f41ed1f215f266a09cb776bc7d17f9b3a7451f211"}