Metadium is a next-generation blockchain protocol designed to create a decentralized identity ecosystem with the real world introduction of Self-Sovereign Identity; the concept that individuals are owners of all aspects of their own identity in the offline and online world. Vitalizing the concept of self-sovereign identity enables individuals to exercise total control of their own identity - managing, securing, and utilizing personal data only under the owner’s consent. The forthcoming everyday life Metadium aims to present is the absolute liberty and optimal convenience in the use of identity in everyday life.