Blockchain technology eliminates the need for a trusted third party and therefore, has significant applicability in the domain of identity management.
In traditional identity management digital identities and their attributes are issued by an identity provider that acts as a trusted third party. The Blockchain technology enables a self-sovereign identity, which can exist independently from service providers (see Figure below). This contrasts to the current ecosystem, which is dominated by few large identity providers such as Facebook or Google.
Several interesting research questions arise due to the transition from centrally managed to distributed trust.