{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"In a blockchain, how can you ensure the avoidance of privilege abuse when calling other programs?","a":"Design a reasonable permission control system: In the blockchain platform, establish a comprehensive permission control system, assign different permissions to different users and roles, and ensure  that only users with the corresponding permissions can access and operate specific functions."}]}],"pr":"8ba588302e362440ff72e8c0475d793b468d0ddaec6f5048daf9e85b9752bc2e"}