Steem Dollars are liquid stable-value currency tokens designed to be pegged to $1 USD. Steem Dollars can be traded with STEEM and transferred to other accounts for commerce or exchange.
Metadium is a next-generation blockchain protocol designed to create a decentralized identity ecosystem. 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. Metadium aims to present a future in which one can freely and conveniently use one’s own identity data.