Over the last few years, we have witnessed an upsurge of enthusiasm about cryptocurrencies and, more generally, the so-called blockchain technology. In this new and updated edition, the authors explore what exactly these new technologies entail and promise. They argue that to understand the...

In recent years, the designs of many new blockchain applications have been inspired by the Byzantine fault tolerance (BFT) problem. While traditional BFT protocols assume that most system nodes are honest (in that they follow the protocol), we recognize that blockchains are deployed in...

Digital currencies are a fairly new phenomenon brought about by the spectacular rise of the internet. While Bitcoin is the most famous, there are numerous other digital currencies-from Amazon Coin to Zetacoin. Beyond Bitcoin explores the economic forces underlying the design of their features...