If you have a trading community, you can become an Onyx ambassador. You get a link and a coupon: whoever subscribes with it gets a discount, and you earn a recurring commission for as long as they stay a customer.
You start at the base tier. Once you pass a certain number of active subscribers you move up to Gold and your percentage increases. You see everything in your ambassador panel: clicks, signups, active users and how much you have earned.
Commissions go through a hold period (in case of refunds) and then become available to withdraw above a minimum. You choose your payout method in your panel.