One of my music videos on YouTube is blocked in Germany with a note that it infringes copyright. I wrote the music and the lyrics myself. I shot the video myself. I'm the sole copyright owner. The appeal didn't lead anywhere. It was detected as such because it's likely registered on Content ID because it was published by Sony, the record label. But Sony does not have the copyright. Still. Nothing I can do. (Even calling up Sony to resolve this didn't lead anywhere.)