<p dir="ltr"><br>The book provides a comprehensive overview of both physical and digital identities. It examines central, federated, and self-sovereign models of digital identity, with a particular focus on the self-sovereign model, which leverages blockchain technology for identification and access management. It also delves into blockchain architecture and its key characteristics. It also explains how blockchain-enabled identity management works, covering transactional procedures, irreversibility, persistence, applications, and the challenges likely to arise in the future.</p>