I totally agree. In fact, as a music producer - not an artist that stays within one style or genre - this problem has crossed my mind multiple times but for myself (thinking because I upload so many different genres and styles, people might assume I'm not the owner of them). Personally, I would love to see some kind of protocol set in place so as I could legitimize my work as well. It would work for both parties.
Hopefully we'll get something in place over time. Thanks for the chat!