  Bitcoin and Ethereum are novel mechanisms for decentralizing the concept of
money and computation. Extending decentralization to the human identity
concept, we can think of using blockchain for creating a list of verified human
identities with a one-person-one-ID property. UniqueID is a Decentralized
Autonomous Organization(DAO) for maintaining human identities such that every
physical human entity can have no more that one account. One part of this
identity is simply the user's claim on one of his unique, permanent, and
measurable characteristics -biometrics. Blockchain has proved its integrity as
a platform for storing and performing computations on such claims. The biggest
challenge here is to ensure that the user has submitted his own valid biometric
data. Human verifiers can check if there is any inconsistency in other users'
data, by peer-to-peer checks. For preventing bad behavior and centralization in
the verification process, UniqueID benefits from novel governance mechanisms to
choose verifiers and punish unjust ones. Also, there are incentives for honest
verifiers and users by newly generated tokens. We show how the users' privacy
can be preserved by using state-of-the-art cryptographic techniques, and so
they can use their identity without any concerns for votings, financial and
banking purposes, social media accounts, reputation systems etc.
