"As one who has a professional interest in virtual and crypto currencies and how such technologies will necessitate changes in the payment and compliance landscape, I find this book a worthwhile read, particularly to those who need to quickly understand tethered money." --Kim-Kwang Raymond Choo, University of South Australia

"So many things about new forms of money you might have never asked, and now you have a chance to learn." --Jana Hromcová, Universitat Autònoma de Barcelona

"It is my opinion this book is a definitive analysis of the importance of understanding the ramifications of the probable acceptance, and transition to economies based on non-sovereign issued virtual currencies. Gideon Samid's insights as an authority on the attributes of a transparent tethered currency model are compelling relating to how this type of virtual currency model can potentially offer an added level of control to assure the appropriate utilization of funds as intended when transfered by individuals, governmental, or quasi-governmental organizations, especially significant for countries where currency transfers can be virtually impossible." --Daniel Schwartz, AMIDEX35 Israel Mutual Fund

"An extraordinary set of new ideas making digital money more versatile as we have ever seen before. Prof. Samid's unique style puts future technology into a historical frame. Couldn't stop reading his technical explanations built on daily life examples ..." --Helmut Scherzer, Giesecke & Devrient

"Most of the traditional money supply is bank money held on computers. This is also considered digital currency. However, central bank representatives have stated that the adoption of digital currencies pose a significant challenge to central banks' ability to influence the price of credit for the whole economy. Prof Gideon Samid is utterly convincing that the future lies with such currencies and that most criticism is not an impediment on their ultimate use. The above criticism is about resistance to innovation. While the result of innovation can be excellent new products and services, one reason innovation is difficult to do is the undeniable fact that innovation introduces change. Gideon Samid’s new book is all about managing the DIGITAL CURRENCY CHANGE." --Boaz Barack, Centralway Ventures AG

"A must if you want to have a very accurate picture of today’s issues and future prospects related to digital money with special stress on security and usage" --Francisco José Callado Muñoz, Centro Universitario de la Defense (CUD) de Zaragoza

"Gideon Samid's Tethered Money describes digital currency technology available that is able to revolutionize how humankind exchanges currency in a safe online environment. As an attorney, I am thrilled that digital currency technology exists that can very literally, by its own operation, enforce the terms of a contract. As an individual, I welcome the day when governments use, and require entities to use, existing, less risky technology to ensure my online transactions are safe. Samid's work contains more than theories - he provides step-by-step instructions demonstrating how to move past the current, cryptographically unsafe third party payment processing systems and the waste and bulk involved in carrying coin and paper currency. I am looking forward to living in the world he describes." --Maryann M. Bullion, Esq.

"Gideon is one of the world's leading experts when it comes to digital currency and cryptography. His work is always intelligent and insightful." --Steven M. Elefant, Soaring Ventures

"Tethered Money highlights a very promising possibility unique to digital money: insuring it is used as intended -- not abused, not wasted. It deserves our full attention" --Avivah Litan, Gartner

"Cryptocurrency, such as Bitcoin that initially came on line in 2008, is a candidate for a new type of money based on cryptography and internet. Gideon Samid exposes how cryptocurrency works as a system in concise and rigorous way in Tethered Money to tell risks and possibilities and to help us with predicting the future of this kind of money." --Tetsuya Saito, Nihon University College of Economics

"Gideon provides a set of expansive and thought-provoking criticisms of both our present financial institutions and more our novel cryptography-based apparatus. Useful reading for anyone considering the technological, legal and social future of money, banking and finance." --Gavin Wood, Ethereum