"With Christopher Allen, Fabian Vogelsteller, and 52 other leading identity experts"--Cover.

In Self-Sovereign Identity: Decentralized digital identity and verifiable credentials, you’ll learn how SSI empowers us to receive digitally-signed credentials, store them in private wallets, and securely prove our online identities. Summary In a world of changing privacy regulations, identity theft, and online anonymity, identity is a precious and complex concept. Self-Sovereign Identity (SSI) is a set of technologies that move control of digital identity from third party “identity providers” directly to individuals, and it promises to be one of the most important trends for the coming decades. Personal data experts Drummond Reed and Alex Preukschat lay out a roadmap for a future of personal sovereignty powered by the Blockchain and cryptography. Cutting through technical jargon with dozens of practical cases, it presents a clear and compelling argument for why SSI is a paradigm shift, and how you can be ready to be prepared for it. About the technology Trust on the internet is at an all-time low. Large corporations and institutions control our personal data because we’ve never had a simple, safe, strong way to prove who we are online. Self-sovereign identity (SSI) changes all that. About the book In Self-Sovereign Identity: Decentralized digital identity and verifiable credentials, you’ll learn how SSI empowers us to receive digitally-signed credentials, store them in private wallets, and securely prove our online identities. It combines a clear, jargon-free introduction to this blockchain-inspired paradigm shift with interesting essays written by its leading practitioners. Whether for property transfer, ebanking, frictionless travel, or personalized services, the SSI model for digital trust will reshape our collective future. What's inside The architecture of SSI software and services The technical, legal, and governance concepts behind SSI How SSI affects global business industry-by-industry Emerging standards for SSI About the reader For technology and business readers. No prior SSI, cryptography, or blockchain experience required. About the authors Drummond Reed is the Chief Trust Officer at Evernym, a technology leader in SSI. Alex Preukschat is the co-founder of SSIMeetup.org and AlianzaBlockchain.org. Table of Contents PART 1: AN INTRODUCTION TO SSI 1 Why the internet is missing an identity layer—and why SSI can finally provide one 2 The basic building blocks of SSI 3 Example scenarios showing how SSI works 4 SSI Scorecard: Major features and benefits of SSI PART 2: SSI TECHNOLOGY 5 SSI architecture: The big picture 6 Basic cryptography techniques for SSI 7 Verifiable credentials 8 Decentralized identifiers 9 Digital wallets and digital agents 10 Decentralized key management 11 SSI governance frameworks PART 3: DECENTRALIZATION AS A MODEL FOR LIFE 12 How open source software helps you control your self-sovereign identity 13 Cypherpunks: The origin of decentralization 14 Decentralized identity for a peaceful society 15 Belief systems as drivers for technology choices in decentralization 16 The origins of the SSI community 17 Identity is money PART 4: HOW SSI WILL CHANGE YOUR BUSINESS 18 Explaining the value of SSI to business 19 The Internet of Things opportunity 20 Animal care and guardianship just became crystal clear 21 Open democracy, voting, and SSI 22 Healthcare supply chain powered by SSI 23 Canada: Enabling self-sovereign identity 24 From eIDAS to SSI in the European Union

After introducing key concepts and definitions in the field of digital identity, this paper will investigate the benefits and drawbacks of existing identity systems on the road towards achieving self-sovereign identity. It will explore, in particular, the use of blockchain technology and biometrics as a means to ensure the “unicity” and “singularity” of identities, and the associated challenges pertaining to the security and confidentiality of personal information. The paper will then describe an alternative approach to self-sovereign identity based on a system of blockchain-based attestations, claims, credentials and permissions, which are globally portable across the life of an individual. While not dependent on any particular government or organization for administration or legitimacy, credentials and attestations might nonetheless include government-issued identification and biometrics as one of many indicia of identity. Such a solution--based on a recorded and signed digital history of attributes and activities--best approximates the fluidity and granularity of identity, enabling individuals to express only specific facets of their identity, depending on the parties with whom they wish to interact. To illustrate the difficulties inherent in the implementation of a self-sovereign identity system in the real world, the paper will focus on two blockchain-based identity solutions as case studies: (1) Kiva's identity protocol for building credit history in Sierra Leone, and (2) World Food Programme's Building Blocks program for delivering cash aid to refugees in Jordan. Finally, the paper will explore how the combination of blockchain-based cryptocurrencies and self-sovereign identity may contribute to promoting greater economic inclusion. With digital transactions functioning as identity claims within an ecosystem based on self-sovereign identity, new business models might emerge, such as identity insurance schemes, along with the emergence of value-stable cryptocurrencies (“stablecoins”) functioning as local currencies.

‘Crypto’, a loose term that means many things to different people, only entered the public consciousness within the last five years or so, now evident by the volume of public discussion, commentary and analysis spread across every conceivable media outlet.

This book presents state-of-the-art theories and technologies and discusses developments in the two major fields: engineering and sustainable computing. In this modern era of information and communication technologies [ICT], there is a growing need for new sustainable and energy-efficient communication and networking technologies. The book highlights significant current and potential international research relating to theoretical and practical methods toward developing sustainable communication and networking technologies. In particular, it focuses on emerging technologies such as wireless communications, mobile networks, Internet of things [IoT], sustainability, and edge network models. The contributions cover a number of key research issues in software-defined networks, blockchain technologies, big data, edge/fog computing, computer vision, sentiment analysis, cryptography, energy-efficient systems, and cognitive platforms.