{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"In blockchain, how can we ensure the safety and reliability of cross-program calls?","a":"Implementing permission control: According to different business requirements, set up appropriate permissions for each  program, limiting the access and manipulation of data to authorized users and processes only."}]}],"pr":"fd3c245f269cf97ca6c74c439cac4720b544fc4842982aaaf3ad4d60514fcd6c"}