I wrote about a related issue a while ago: https://blog.dbmiller.org/2022-04-08-not-that-kind-of-pirate-youtubes-music-copyright-system-is-still-broken https://

I wrote about a related issue a while ago: https://blog.dbmiller.org/2022-04-08-not-that-kind-of-pirate-youtubes-music-copyright-system-is-still-broken https://blog.dbmiller.org/2022-04-08-not-that-kind-of-pirate... In effect, anyone on YouTube can upload material and claim that it is their own copyrighted material, even if it's not. And there's no way to dispute this. If you write and say it's public domain, then the claimaint gets 30 days to dispute the claim. If they choose to dispute it, I believe they are required to DMCA you (which they rarely do, especially considering that they'd be totally in the wrong for a c1927 item). Usually, they just let the claim lapse after 30 days. But if you upload the content again, then you will have to dispute it again, because there's no way to mark a claim as invalid in itself.