If you buy this, you are scammed.
You pay for something and get a receipt. You get ownership of an original image, such as a painting, transferred by a verified owner or creator. It’s mostly used for art now because the reputation hasn’t matured enough for an authority to link it to a physical item. But being able to own a 1 in 5 Nike release with a receipt that never decays and that you can transfer to others and verify the authenticity of on your phone just seems like the next step in ownership. Same with video games, for example, it’d allow a true second hand digital games market if game ownership was verified by owning a copy on a blockchain.
But you’re not the owner, though, you don’t get a copyright, the image is hosted externally, anything besides the receipt is just a contract which needs to be enforced via regular legal means and can be broken.
“It’s mostly used for art now”
Do you call a procedurally generated monkey art? In stores, you get receipts for things that are actually usable. The hell are you going to use a JPEG for?
“Verify authenticity”
If that JPEG is shared, other people will have access, and your “ownership” will be nothing, since people can just repost it on other NFT shit sites and start the loop all over again.
“with a receipt that never decays”
And what if the NFT site suffers link rot or actually goes down? Your digital “never decaying” receipt would be useless and/or inaccessible.