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.

THEKEY is developing a decentralized identity verification (IDV) solution. The company uses the term BDMI to describe their solution. which stands for "Blockchain Based Dynamic Multi-Dimension Identification". The platform will create a holographic digital identity online, which will allow users to have greater control over managing their online identities.
THEKEY's network is powered by the TKY token.