Bitcoin is a new digital currency that it's perhaps the best form of money that we have ever seen. It's important because most of us don't understand money very well, and perhaps the concept that is harder for us to understand about money is that money is and has always been a ledger. And people often ask, "What is money backed with?" And the truth is money is not backed with anything. It has never been backed with anything. The Euro is not backed with anything in particular, and neither is any other currency in the world.