I do agree with you that crypto art or rare digital art is really a revolution in digital art. It gives the artist more control and hopefully also more revenues from his or her original work.

I can see you're still in doubt on how it exactly works. It really isn't that hard to grab, once you've tried. What you are selling is actually a digital license of your work. What the license means can change from site to site (blockchain to blockchain).

Why don't you have a look at NFT Showroom, the crypte art gallery of HIVE? I just started my own gallery there; it's quite simple and straightforward. And the cost to publicize your art are much lower than on the Ethernet blockchain...