Earlier quoted context omitted.
In the digital space, we have signed PDFs. So a comic book artist could easily generate 100 numbered PDFs, and sign them each. Anyone could verify it's authenticity using even Adobe Acrobat Reader, which has had this functionality for decades.
Yeah, but I can’t sell you the PDF because I can’t prove that I’m selling only to you. That makes the PDF useless to sell on. An example of something is the fact that I am a vim donor and a neovim initial backer. I really like that I’m in backers.md. If they would have handed out NFTs for backing, I would have loved that too.
None of this needs a energy-hungry blockchain.