I recommend watching this interview with the creator of NFTbay, there are a lot of misconceptions on it's current usage. TL;DW: it's an immutable representatio

I recommend watching this interview with the creator of NFTbay, there are a lot of misconceptions on it's current usage. TL;DW: it's an immutable representation of some data (usually a hyperlink), put on to a public blockchain such that ownership of this representation can be verified. Not much different to a regular certificate just different trust assumptions (certificates use a trusted party, while NFTs use a "trusted" technology).