Mastering Bitcoin: Unlocking Digital Currencies (2014, O'Reilly) ISBN 978-1449374044 Mastering Bitcoin 2nd Edition: Programming the Open Blockchain (2017, O'Reilly) ISBN 978-1491954386 Mastering Ethereum: Building Smart Contracts and dApps (2018, O'Reilly) ISBN 978-1491971949 The Internet of Money (Volume 1) (2016, O'Reilly) ISBN 978-1537000459 The Internet of Money (Volume 2) (2017, Merkle Bloom, self-published) ISBN 978-1947910065 The Internet of Money (Volume 3) (2019, Merkle Bloom, self-published) ISBN 978-1947910171