Idena is the first proof-of-person blockchain where every node is linked to a cryptoidentity - one single person with equal voting power. Idena is one of the most decentralized blockchains.
To start mining Idena, you need to prove you're a unique human. It does not require the disclosure of any personal data (no KYC). You have to appear online when the validation ceremony starts and solve a series of flip-tests (CAPTCHAs).
The Idena protocol solves the blockchain oracle problem: Its independent mining nodes can act as oracles across various blockchains. Idena accounts are compatible with Ethereum.