Social Currencies

I came up with the concept of a monetary system based on helping others.  The idea being that the best way I can achieve happiness is simply by helping someone else. Think "Pay It Forward'.  Plan is loosely based on the game 'second life' but real not virtual. Say someone helped me by giving me a basket of apples.  That person's account would be credited with maybe 10 Haps (what ever the unit of currency), while my account would be debited 10. If both started with zero, one would be +10 the other -10. The only way to get Haps is by doing something for someone (this has to be developed) but I definitely can't buy Haps.  Each Hap has to have a serial number so a hacker couldn't make one up.The system also has to be completely open and visible. That way anyone could check authenticity of transactions. I was trying to figure out how to best describe the function of the system, and the best I have thought of so far is pure capitalism combined with pure democracy, because it encompasses a social structure and an economic system.  Like capitalized democracy or something.