{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do testing and validation nodes in a blockchain verify the security and reliability of new programs?","a":"Combine each module together for integration testing to  ensure that the entire program functions normally under different scenarios, and observe whether there are any potential compatibility issues."}]}],"pr":"fc3211d113360bd435b34eac43f9f787f8f07b5cf8020e75ccb19a4fb78f9e7f"}