Yes its similar but i didnt know about Nash when i started.
Also this is basically Nash in software form. And in my system there is guarantor contracts and the deposits are completely adjustable and there is a reputation system. So its much more involved.
But the theory is the same as Nash, Ultimatum game etc etc
In other words, its game theory. And why not, when applied to the real world it results in the only contract in the world not backed up with a gun.