I put this directly in chit chat, because I knew it's where it would end up anyway. A friend of a friend heard I was involved in the stock market and contacted me via facebook. He heard the number on his BC (not the ss#) was directly linked to a government bond, and that a stock broker can look up the number and figure out the value of said bond. I'm a prop trader and I have no access other than trading stocks, and Google gave some pretty silly results. Just to be clear, he is a highly educated dude, but he also seems to be a big believer in conspiracy theories, but I told him I would ask around, regardless of how silly it sounds. I apologize in advance for wasting your time.