{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the potential risks after a blockchain upgrade?","a":"Consensus Risks: The new consensus algorithm after the upgrade may not achieve the expected effect, leading to an  impact on the security and decentralization degree of the blockchain."}]}],"pr":"49956bf257c56e3a08cbfb92733babff2bd52d6babd3ab2d5a60f7bfd1636257"}