If it was that easy to tell whether a course was pirated (yet alone determine the original owner), this whole mess probably wouldn&#x27;t have happened. Udemy is in the best position to identify infringement since they have complete access to the courses, but it&#x27;s anyone&#x27;s guess whether they would go to such lengths. I would guess the best bet would take a few screens at random durations then perform an image search against a database of screens collected from courses on other marketplaces. Then use Mechanical Turk for final verification. I suppose you could perform facial recognition against profile photos of authors on other marketplaces as well (for the courses that actually include a headshot). I&#x27;ve used OpenBR to do similar things in the past but accuracy was too low to be useful in my case.