If you are interested in learning more about the technical operation of bitcoin, or if you are building the next great bitcoin killerapp or business, you will find this book essential reading. From the basic use of a bitcoin wallet to buy a cup of coffee, to running a bitcoin marketplace with hundreds of thousands of transactions, or collaboratively building new financial innovations that will transform our understanding of currency and credit, this book will help you engineer money. You are about to unlock the API to a new economy. This book is your key.