By creating a bridge between the public blockchain and private data, contracts can harness the full power of blockchain technology, without compromising on reliability or transparency. Keep is that privacy layer. We use keeps, or private enclaves, to securely encrypt and store private data. Off-chain keeps will be protected using secure multiparty computation (sMPC), generating, securing, storing, encrypting and transmitting data across many individuals.

Keep provides the first production-ready sMPC system for distribution on the public Ethereum blockchain.

With this system, each individual is given access to a small portion of a secret which is encrypted. To gain or share access to that secret, the outputs are reported back from all the individuals and decrypted to reveal the secret. Keep is Ethereum’s first private computer, able to store and compute data hidden even from itself. This unique approach allows for the safe transfer of information from one party to another on the public blockchain without each individual needing to be online, providing a superior solution to current hashreveal solutions, private blockchains, and zero-knowledge proofs alone.