{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security risks that may arise from blockchain upgrades?","a":"Data tampering: Although blockchain  has the attribute of being tamper-proof, during the upgrade process, if there are vulnerabilities in data transmission or storage, it may lead to data tampering and affect the security of the blockchain."}]}],"pr":"335545d681210bdee39719be931b18a7d102675df4a23ceba24d3b59fff1a1c7"}