Metadium is developing a blockchain protocol for Self-Sovereign Identity. Their goal is to allow users to own all aspects of their identity. Metadium's network is powered by the Ethereum-based META token.

uPort is developing a self-sovereign identity platform for the Ethereum blockchain. It will consist of a wallet that will allow users to sign transactions and manage their keys and data more easily, as well as tools that will allow developers to issue credentials and request data from other DApps that use the paltform. uPort is a ConsenSys portfolio company.