$BTC We present the book Bitcoin: the Currency of the Future in its collection Money, Gold, and Finance. Prepared by the members of elbitcoin.org and prologued by Félix Moreno de la Cova, the work proposes a concise and complete answer to three key questions: what is bitcoin, how does it work, and why will it change the world? Thanks to its accessible and educational nature, readers will be able to immerse themselves in the fascinating universe of bitcoins regardless of whether they have received solid economic training or not. Bitcoin is a new concept of electronic currency that has caught the attention of specialists and media around the world. Another victory of the individual's innate entrepreneurial creativity to overcome those obstacles that prevent them from thriving peacefully and through voluntary agreements. Digital, decentralized, open, universal, voluntary to use, free from unwanted intermediaries, and shielded against inflation, the advantages of bitcoin compared to the system we have inherited are so many and so evident that more and more people are deciding to adopt it worldwide, from computer programmers to automobile manufacturers, including tourism companies, hosting services, restaurants, clothing stores, casinos, and charitable organizations. Bitcoin: the Currency of the Future reveals the secrets of a monetary alternative that is changing our way of understanding money.