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PSA: You can't delete photos uploaded to Lemmy. So don't (accidentally) upload a nude
(tech.michaelaltfield.net)
This is a most excellent place for technology news and articles.
But you can delete your copy, ask others nicely to delete theirs, and refuse to accept more copies of the same thing.
I'm not sure if Lemmy supports any of this, but it seems pretty important for e.g. child porn.
How can you refuse to accept more copies of the same thing, when you deleted all the version it can compare itself to?
When you get a deletion request, hash the bytes and store the hash.