This document provides an overview of existing DLT systems for identity management, i.e. the mechanisms by which one or more entities can create, receive, modify, use and revoke a set of identity attributes. This document covers the following topics: — Managing identity for individuals, organizations, things (IoT & objects), functions and processes and other entities including within and across DLT systems. — Description of the actors and their interactions and common interfaces. — Architectures. — Existing relevant standards and frameworks.