{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of the upgrade module in the blockchain?","a":"Strengthening  security: Fix potential security vulnerabilities and enhance the ability of the blockchain network to resist hacker attacks and malicious behaviors."}]}],"pr":"21c13ef3c48022196bda9ac28bd0bbeabb4fb07dde994613047ba52c76c1ee30"}