Spruce

Spruce, a decentralized identity startup, has won an RFP from the Ethereum Foundation and Ethereum Name Service (ENS) to develop a standardized "Sign-in with Ethereum" feature. This feature enables users to control their identity with their Ethereum account and ENS Profile, instead of relying on a traditional intermediary. SpruceID is an ecosystem of open-source tools that enable user-controlled identity anywhere. Kepler is a decentralized storage system that uses smart contracts to define where data is stored and who has access to it.