There could be a legally binding contract stating that any deletion request must be forwarded to all parties it was send to, and that upon receiving such a request the data must be deleted.
I do not think this would be unreasonable to ask to servers, especially as this deletion receipt could be fully automated.
Not sure I understand. How could there possibly be a solution? Isn’t this an inherent problem with federation? You can’t un-share information
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.
There could be a legally binding contract stating that any deletion request must be forwarded to all parties it was send to, and that upon receiving such a request the data must be deleted. I do not think this would be unreasonable to ask to servers, especially as this deletion receipt could be fully automated.
Or there could be a delay of one minute before posts get federated, giving the user the option to quickly delete a comment or post.