Spotify: If you already have a release that is available on Spotify, you can simply follow the steps in the blog linked below. If you want to have your profile verified before your first release, for example to pitch, you can contact our support at firstname.lastname@example.org
and we will send you your artist URI to verify your profile.
Apple Music: In order to verify your profile, at least one release must be available. Once this is the case it only takes a few steps.
How you can verify your profiles, you can read in these two blog posts: