I am genuinely interested in how this problem is solved. I actually own around 200 frames of a certain movie (bought them from the production company as a way

I am genuinely interested in how this problem is solved. I actually own around 200 frames of a certain movie (bought them from the production company as a way to help sponsor the movie) and I would like to put them up for sale as NFT's, but I dont really see how everyone else could just claim the ownership and do the same.