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.

SelfKey is developing a blockchain-based self-sovereign identity ecosystem. Their decentralized identity management solutions are designed to allow users to better control their personal information, while also facilitating KYC procedures for a variety of purposes. SelfKey's platform revolves around the concept of Proof Of Reputational Stake, which requires users to stake Ethereum-based KEY tokens to participate in the network. Smart contracts release the staked tokens when the user leaves the ecosystem

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.