> But what prevents me from simply taking the source image and simply minting my own NFT and displaying it? Because the NFT isn't just a pointer to an image, i

> But what prevents me from simply taking the source image and simply minting my own NFT and displaying it? Because the NFT isn't just a pointer to an image, it's a tuple that also includes which wallet address is granting you that NFT. So, the "real" NFT for a work is the one granted by the original artist or other authority people culturally agree upon as the one that has real social and economic value. (For example, the artist may post the public key somewhere authoritatively that conveys it is the one they've sanctioned.) It effectively acts as a fully-provable (and scarce) signature by the artist, and eventually if it isn't already, will be displayed visually on the work in these apps to confer legitimacy. Putting up an image that isn't signed by the original artist will be possible, but it won't confer the same status to a person the genuine NFT would, since observers will be able to know it is not the genuine NFT. And of course, the reason you'd want to use this kind of environment is self-referential: you want to use it because you want the status or other benefits that come from being able to put your genuine NFTs on display. For example, it can show how wealthy you are, show that you are willing to patronize artists, cause the original artist to come visit your showroom, etc.