Own your health data. Improve medical research.
Kara is a privacy-preserving tokenized data cloud for medical data. Medical data is currently locked in data silos due to regulations, policies, etc.
Kara's data market relies upon three building blocks: Blockchain, Secure computation and Program verification
Sterling is Kara's backend and provides us with an efficient and scalable approach to train analytics models within a decentralized trustless ledger.
Sterling leverages trusted hardware to split consensus and compute - allowing confidentiality-preserving computation
Confidential smart contracts automatically negotiate the transfer of data points. If the data consumer's contract fulfills the policies of the data providers, Sterling performs computation on this data in a confidentiality-preserving way inside a trusted hardware enclave, keeping model and data secret for both parties.
Sterling leverages differential privacy, allowing us to bound any data leakage even after training the model
All models are trained with a differentially private mechanism to bound any data leakage after the data consumer receives the model. In this way, the data consumer can't determine through their model, what data was being used.