It seems simple to work out a contract between two beat makers splitting the cash when the beat is sold exclusively, but how does non-exclusive leasing work? Is there a legit way to make sure both people get paid, beyond just trusting each other to be honest about what they lease out and sending money? It seems unfair for me to lease a beat for 25 bucks, but have the other person who worked on the beat not get paid, and vice versa.