Downstairs I have a painting. It’s a pretty nice piece of paper with pencil, ink, and watercolour on it. There is only the one. Even if I try to make another, it will be different.
I scanned it. Now I have an image. I could print copies and make a limited number of signed and numbered copies. I’d have to be trusted to not be able to print any more though.
I was hoping that I could do the same with NFTs.
I was hoping that an NFT would be a receipt with at least the following information:
- What item was referenced (Name, hash, and location of item)
- Who sold it
- Who bought it
- When the sale took place
- The selling price
…and that’s about the minimum I would expect to find logged in the public ledger.
I was thinking that, even if the artwork itself couldn’t be in the ledger, there would be a way to reference or provide a copy of the receipt and package it with the artwork file, for example in a download or on a USB key.
But the location of the file strikes me as exactly the wrong piece of information to hash.
I’m wondering whether the answer might be to make a two-way link between the receipt and the file? The receipt has a hash of the file, but likewise the file has a hash of the receipt? That way location is irrelevant; both items might have a unique creation time stamp in them for example, that would lead to a unique hash.
Doesn’t solve the bit-for-bit copying problem though. I guess it doesn’t matter if the receipt gets copied, but the artwork?
I am somehow reminded of the chests in Minecraft that link to the “End” part of the game world… once you have one in the End, you can make one in the regular world, and opening either one reveals the same contents. You can make as many of them as you want, and they all contain the same contents.
These chests become a handy way to move things around the game world: just put the item into a chest at one location, and you can remove it at another. The chests are all the same chest inside.
Maybe we need something of the same for NFTs? Make as many copies as you want, but what happens to one will happen to all. That might open owners up to blackmail though: “Give me <valuables>, or I’ll destroy my copy, and therefore your copy, of your painting!”