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Blockchain Privacy and its Applications in Healthcare

Blockchain, due to its decentralized, verifiable, and immutable data between untrusted entities, in addition of applications in cryptocurrency, is gaining interests to many different applications, such as decentralized identity management, supply chain management, private data management, digital healthcare data record, etc. However, those applications added more complex requirements for enforced privacy of blockchain. Currently, all existing blockchain privacy solutions employ advanced “cryptographic engines”, namely zero-knowledge proof verifiable computation schemes for which the zero-knowledge Succinct Non-interactive Argument of Knowledge (zkSNARK) approach is the most promising. In this talk, I will first present an overview for the current research on zkSNARK enabled blockchain privacy and how practical of those schemes. Then I will present some exploration of the application of blockchain in digital healthcare data record systems in different types of blockchain systems, such as public or permissionless blockchain, private and permissioned blockchain and consortium blockchain with privacy enforce