Self-sovereign identity: public permissioned and permissionless blockchain solutions

Abstract

The self-sovereign identity (SSI) builds on the notion that the identity provider (the user) possesses full control of their data. In particular, the user could store identity data and decide how much data they share. The user could also decide with whom to share their personal data. The implementation of the SSI concept seems to be fully supported by the features of blockchain technology, in particular, decentralization, peer-to-peer interactions and data integrity. The Sovrin SSI and the uPort SSI present two blockchain-based SSI applications that are explained in the presentation.