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...

Introduction -- Means of exchange: Ever present competition -- Platform-based currencies -- Bitcoin and arrival of Cryptocurrencies -- The Rich Landscape of Crypto -- Smart conrtacts and Blockchain -- Enterprise Blockchains -- Future full of Possibilities.