Introduction The US Dollar seems perfect. It is more than just the national currency of the United States. It is the standard for world trade. People everywhere are used to compare prices in dollars, and transactions can be done anonymously with cash or openly through bank transfers. With credit cards you may even spend dollars you don't have. Some even consider it a store of value. Unfortunately, the dollar is the Titanic of money. Many economists think there's only a question of time before it hits the iceberg. Most of these economists predict that gold and silver will take over. A small group of economists have a completely different approach. Together with a group of programmers, anonymously under the pseudonym Satoshi Nakomoto, they have invented digital money called Bitcoin. Bitcoin is superior to other kinds of money. It can be transferred around the world instantly, anonymously and virtually for free. No registration is needed to open an account. No group of people controls the money supply. Today, four years after it was invented, bitcoin is more popular than ever before, although it is still a drop in the ocean compared with dollars and gold. In this book I will try to answer the question that everyone asks; will bitcoin go mainstream or will it just fade out and die?