Let's just Imagine this. Someone is about to sell a game, he already created it, and ready to publish. He used model created by a "cracked" version of any program of Autodesk. He exported the model in fbx format. Now the question is: does the Fbx format contain a license tag from which can reveal that the user used a "cracked" product of Autodesk to create an fbx file. I already know that fbx carry name, date, and location, but can it contain a license tag that reaveals weather the program is cracked or not? What is written above is just simple imagination which I am not willing to do personally !
