While hunting around in the code and trying multiple things I can't quite find the code responsible for the referral system.
Nothing is commented in the code.
So with lines like: "  $data["reflink"] .= $_COOKIE['address'];"
I think I'm on the right track but never quite get what I'm looking for.

Basically my system knows all the users BitCoin Address, and the Addresses of the people whom refereed them. These are known at all times. How can I make those inject manually into what already exist.

If what I'm saying is confusing I understand as I'm not really sure how to word it.

If anyone can point me even in the right direction that too would help a ton. I know the addresses are saved in the MySQL Database. But the way everything is organized is a bit confusing.