Whilst not mandatory, we recommend you submit all beats for monetisation as soon as you upload them to Airbit. If someone else has submitted a song containing your beat for monetisation, it may impede our ability to monetise said beat, or stop us from monetising it entirely.
This is because, as far as YouTube is concerned, that piece of music already belongs to someone else, and that will be used to match any videos containing this music. When matching videos, YouTube needs a reference file to match against these videos. This reference fils is the piece of music (i.e. your beat) that you submit. Therefore, if YouTube already has a reference file, in the form of the song submitted by someone else, that is the file that will be used to match videos.
This does not mean they own the copyright to your beat(s).