Identity management solutions are generally designed to facilitate the management of digital identities and operations such as authentication, and have been widely used in real-world applications. In recent years, there have been attempts to introduce blockchain-based identity management solutions, which allow the user to take over control of his/her own identity (i.e. self-sovereign identity). In this paper, we provide an in-depth review of existing blockchain-based identity management papers and patents published between May 2017 and January 2020. Based on the analysis of the literature, we identify potential research gaps and opportunities, which will hopefully help inform future research agenda.

身份管理解决方案通常设计用于促进数字身份和诸如身份验证之类的操作的管理，并且已广泛用于现实应用中。近年来，已经尝试引入基于区块链的身份管理解决方案，该解决方案允许用户接管他/她自己的身份（即自主权身份）的控制权。在本文中，我们提供了对2017年5月至2020年1月之间发布的现有基于区块链的身份管理论文和专利的深入综述。基于对文献的分析，我们确定了潜在的研究差距和机遇，有望为我们提供参考未来的研究议程。