I only just thought of this. I have the same cartoon-y profile pic from a foreign TV show on a bunch of my accounts, I wonder if its unique enough and worth tracking.
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can’t you quantise and downscale the image, then take the hash?
Yes
That works too but then the image will be the resolution of a Minetest texture after uploading.
no i mean downscaling and quantising before taking the hash to be able to reliably get the same hash for images that have been compressed, downscaled, had individual pixels edited, etc
Oh that’s smart but I don’t think they use it for tracking now. The most they can do is check the hash for known CSAM.