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‘There is no such thing as a real picture,’ says Samsung exec.
(www.theverge.com)
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this post was submitted on 03 Feb 2024
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In the 90s someone proved--mathematically--that invisible watermarks (e.g. hidden in metadata or in the pixel data itself) in photos would always be removable. I searched for it but I couldn't find it but it should be obvious: Merely changing the format of an image is normally enough to destroy such invisible watermarks.
Basically, the paper I remember proved that in order for a watermark to survive a change in format/encoding it would need to be visible because the very nature of digital photo formats requires that they discard unnecessary information.
Also, I'd like to point out that it's already illegal to remove watermarks (without permission) while simultaneously being trivial (usually) for AI tools like img2img to remove watermarks.
Oh, I know it's impossible to do something like that. There's a reason that whenever I upload a photo I always crop it. That way, if there's ever a question about copyright, I can simply reveal a portion that was cropped. Likewise, someone taking such a photo should keep the untouched, uncropped original in a safe place. You know spicy photos will be used in a questionable way, so this will make it easier for the original owner to refute any modifications.