Yeah, fishcake implimented AI to detect csam at nostr.build, but also theres an fbi database of md5 hashes of known csam images that all US based image hosts are required to filter images through. This would be good for nostr image hosts to voluntarily impliment.
Its important to stress to new users, nostr notes are just text. They link to images srored on media servers. So censoring notes at the client or relay level is not the best approach, imo.
but also remember that the images may not be hosted on nostr affiliated image hosts. it could be anywhere. that makes it harder. to me a client doing a compare against image links sounds like a very resource intensive task. it may not be a good approach like you said.
Can you tell me how I can access this database?
Honestly don't have a clue. I just know from working as an expert witness that Facebook flags images if their hash matches the database. Maybe contact these fellas https://www.missingkids.org/home
I have contacts there if needed for anything specific. Let me know.
Its only ussful to image hosting companies really
