I read a few sentences and am wondering what an NFT is. I’m familiar with OpenSea but there really is not much explanation here for people not already deeply embedded in this world.
But it is referring to unique collectibles. The blockchain protocol aspect improves on the pricing and provenance of the asset, as one can prove when it was created (before or after another similar one, for proof of the original creation), and the exact amount paid for it at that time, to better illuminate prior market value. The art world has had trouble with all of this for millenia including in the present.