Assume that the future can change based on your actions, so any historical information that you bring along with you from the intervening 25 years may quickly drift out of the new realities history.
Edit: also assume that you can be given a healthy 21-year-old body if you want or take your previous self’s place.
Further, identification will be provided for you if you were not born at that time.
That exists. And we could probably even make something that recognizes small changes like added text on the image and save the data accordingly, probably using some kind of neural network as you later mentioned. The issue is just that that would be extremely computationally expensive, so companies usually choose to just buy a shitload of HDDs. Maybe something like this might be more feasible with quantum computing at some point.
What makes you think that? An NFT is basically just an ID card with extra steps. I don’t see how NFTs relate to the problem you described at all. Just because most NFTs the public heard about were somehow tied to images or videos, doesn’t mean that NFTs are a technology for detecting duplicate images/data in general.
I mean nft’s basically serve as a identifier for a file. So if you can identify the file then you can set it as a base image and then cross compare with that identifier. Idiots are using it to like have some sort of weird digital ownership of something but that’s not its ideal use case
NFTs are non-fungible tokens. They are literally made for claiming some sort of weird digital ownership of something. There isn’t really another feasible usecase for that technology, even if I agree that that hasen’t been done in a meaningful way yet. If you want to identify the files in that anti-duplication system of yours you are better off using just a regular incremental integer or GUID or something. No need for all the extra steps to the ID card