A Decentralized User Authentication Model Based on Activity Proof : Use the new user identity credential: activity map

Currently, people need to use a large number of accounts and password, this has already become a problem which can be called "sea of accounts and passwords". This problem has a lot of negative effects. This paper presents a new kind of user identity credential, i.e. user activity map. On this basis, a decentralized user identity authentication model based on activity proof is proposed. Based on the blockchain idea, the model is built by Authentication Chain. The Authentication Chain is composed of Activity Chain and Activity Proofer Chain. This model does not need a central system, but can use the user’s activity map as the identity credential, and verify the user’s identity with the supporting results of activity map through multiple systems. This paper introduces the prototype verification of the model, and discusses the security and feasibility of the model.