In 4 steps: register the track, activate the Online service, enter the ISRC code and request the activation of the Content ID.
The content ID is the system that YouTube uses to link a track to the rights holder so that you can determine what content your music is used in. For this, it's important that the version of the track you register matches the version that's distributed on digital channels
You can request the Content ID from YouTube or through digital distributors.
In your Soundreef account, you'll find YouTube reports on the 30th of the month following the month of use (example: on April 30, we publish the YouTube report for use in the month of March). License payments are made on a quarterly basis.