You have to look to incorporate in a jurisdiction which has less strict laws on adult businesses. Best is Luxembourg and Cyprus where "Mindgeek" with "Pornhub" is incorporated, too. For example, as far as i know, pornhub payouts are coming from Luxembourg or Cyprus. However Germany is also quite open for these businesses.
With 700k/month you should have the resources to pay for a proper incorporation in these countries and also fulfill the necessary (quite nasty) accounting requirements.
Online banks from these countries won't take you. You have to visit a retail branch in person to open an account for this kind of business. The background check will also be quite nasty as they require a lot more docs like for example a
certificate of good conduct etc.
In Germany I can recommend "Postbank". Most local/online sex shops,prostitutes and German pornsites have their bank account at the German Postbank.
USA is also possible but indeed very very annoying.
I have a cam girl as client for who i incorporated in the US. It was a big pain in the a*s to get an account but Wells Fargo in Miami finally took her (no chance at BofA, USbank or Chase) and she doesn't have problems so far (3 years). However she only does like 10k/month and not 700k like you.
Off Topic: Just amazing that shoving a dragon dildo up your goth a*s can get you 10k/month... Wish I were a pretty girl, would immediately drop out of the offshore business, haha.
Long story short:
Try Postbank, Wells Fargo and maybe speak to banks in luxembourg and cyprus. Call them, don't write emails and tell them that you want to visit in person to speak about everything and you don't have problems with an intense verification process. Ask if it may be possible and then incorporate in this jurisdiction.
