How do I claim songs I wrote anonymously?

[Sync]

I don't know, that's why I'm asking.

I think you can tell from the low quality and consistent use of "x#, x" patterns/lack of varying time signature or tempo, that these are all by me.

Since I catalogued them, I could just copy over the one best version of every song worth saving, but a) why have even more copies and b) who's to stop someone from saying it's theirs?

If someone reuploads your sequence, it says on your sequence that it "inspired" the stolen one. That is basically a watermark but for sequences.