What you could do is retain the copyright yourself, but accord an open-ended copyright license (like the way oss licenses are written) that accords certain rights to the owner of the NFT (and have the license describe how to determine who is the owner of the NFT).
NFTs provide no new tools or even solutions for tracing, enforcing or indeed arbitrating licensing of a thing. Its just a hash. Photo stock sites already have perceptual hash tracing.
However for them its useless as they only ever sell licenses to use the artwork, not "ownership". They still retain the original copyright, which allows them to sell licenses to use the image/sound/thing
NFTs aren’t even a hash, they are a URL.
Suppose you take an amazing photo (or create digital artwork), and pack it up as an NFT on platform A using token/blockchain technology Alpha. Alice buys this token, and has some sort of limited ownership of your picture.
I (a nefarious user) take the same digital photo you displayed on your website, and sell it to Bob on platform B with blockchain Beta.
I also take your digital photo, make some minor alterations and put it up again on Platform A with Blockchain alpha and sell it to Charlie.
Alice, Bob, and Charlie all think they own the picture, and while they do own their own versions, how do we know Alice is the “right” owner of your photo?
Especially in the future when you’re not around to confirm the version Alice has is the right one?
No crypto expert but I was thinking something like this:
Artist decides to make a run of 100 copies of the work, and generates 100 work signing keys and generates a list of "1/100, work public key 1" etc. Artist then signs this list with their artist signing key, gets a signed timestamp, and publishes this somewhere on their site, along with the public portion of their artist signing key.
Artist then signs the (uncompressed) pixels of each copy of the work using the corresponding work signing key. Signature is embedded in the image file along with the work copy details, "1/100", say as a PNG chunk or similar.
NFT is created for the work copy, and I'm presuming there's something akin to a signature of the image file in the NFT to link them.
If you then get a NFT you can verify that the image file is indeed what the NFT refers to. You can download the work public key from the artist and verify that the public work key is from the artist, and then verify that the work (pixels) is what the artist signed.
Then again I don't know the domain enough so might be completely silly and or flawed idea. And obviously it requires a non-lossy image format ala PNG.
The only reason it works right now is because that NFTs are so recent that you can just send a DM to artist's twitter to verify if the original set of crypto keys/wallet belong to them. When the artist himself is promoting it, it's not hard to figure out if it's genuine or not. But what happens in 10 years or if you can't trace the original artist?
How would you know if I took the picture myself or if I stole it from flicker? if reverse image search doesn't work, it would be impossible.
Regardless, if you get the current verifiable statements signed by a trusted entity every now and then, you should be able to verify the trust chain, no?
Before the old keys expires you get someone to verify and sign with a new key, rinse repeat?
That's the same as making unlicensed prints from a manipulated copy. That's a copyright violation. The physical world doesn't protect you from that either. You need to sue either way.
This could be used as evidence of their authorship in court.
“Look, here we have a tamper proof ledger showing I uploaded this at X date before it was copied.”
There are other things people could consider though, in terms of evaluating the history/authorship of something. The blockchain is just one data point.
Eg, I recently saw the “Charlie bit my finger” family will sell an NFT of their video. Is there anything stopping someone else from selling NFT’s of other viral videos before their makers do so?
Timestamping would only work for works that are tokenised at the same time as (or prior to) their public release.
If there is other evidence, e.g. the other party has a YouTube account which uploaded a video years ago of the work, and is publicly known to be the author of the work, then the judge will probably rule the NFT is not sufficient evidence of ownership/you are not the copyright holder.
There is nothing technically stopping people uploading NFTs of things that they don’t own the rights too. That won’t hold up in court though, not even the court of public opinion.
Same as all the NFT "artwork" I see around. Why cant I just literally copy and paste the artwork, maybe change one single pixel, and re-mint it?
The right one is the one the original author of the artwork released it on. The thing about NFTs is the connection between digital items and their authors.
If you're like most art collectors you'd follow the author anyway. You'd buy one because you're a fan of the author and enter their nft sales funnel.
How would this work?
The old world analogy to your scenario is you go to a museum and take a picture of an Ansel Adams work, make a print and try to sell it to Bob. Why would bob pay for this. you have to convince him it's a real Ansel Adams.
Same thing with NFT. You would have to know artist on alpha is real and beta is not. It's non trivial but again I don't think it's actually that different from the real world today. NFT does not attempt to solve this part. Instead it let you check that the nft you're buying is from alpha and the original artist.
There's simple ways of running such databases that don't require blockchain.
NFTs aren’t providing anything beyond what a COA provides, and the COA comes with a physical handwritten signature. Neither is any actual protection against determined forgers. As an occasional artist and photographer, I wonder if the solution to authenticating and valuing digital art is to sell the copyrights along with only a single digital and/or physical copy of the art, and then delete it. Make it unique to the buyer the same way a sculpture or painting is unique.
That's incredibly powerful; because a physical COA in my cupboard that none of my friends gives a shit about is less interesting.
So I claim this is worse than a regular license because you have to jump through crypto hoops that most people don't understand.
So if I took some "amazing" photos of stuff, whether it was art, landscape or 'stock' style photos. I could list them on a website to be sold, and sell the NFT of the photo.
Yes - anyone can "right click -> copy" the photo, but we are talking about the licensing side of the photo. This proves the person using the photo(s) in their product or website etc has the "right" to use that photo, in the same way open source projects have licences that people are expected to follow?
The person who bought the photo could on sell those rights at a later stage if they no longer wanted to use my photo (since anyone can sell the NFT).
Basically shutterstock.com or something, but with NFTs? Its about the only genuine use case I can think of...