Mutable Blockchain for Identity Management

Abstract

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 a short review of existing blockchain-based identity management methods. Based on the existing methods, we identify potential gaps and opportunities, and proposed an idea to overcome them using mutable blockchain concept[7] [10]. We have used two algorithms-creation of new identity and updation of existing identities on the blockchain. The main contribution of the proposed algorithm is to store the personal data securely in local database and the address of the corresponding data is stored in the blockchain in hashed format. The results for the proposed approach demonstrate that the mining difficulty and mining time varies with the number of transaction in per block.