Data silos and interoperability challenges abound in healthcare, and blockchain technology appears to provide a solution, theoretically allowing distinct sources of data to update each other in a decentralized waywithout the considerable administrative burden of maintaining up-to-date centralized databases.But for a blockchain to function this way, the data stored on it must be made public by defaultthis is how updates spread through the chain. And that’s a problem for the healthcare industry, where many potential use cases involve protected information that cannot be shared without a patient’s consent.

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