MedRec

In 2016, John Halamka, CIO at Beth Israel Deaconess Medical Center in Boston collaborated with a group of scientists at MIT to come up with a blockchain-based project for convenient storage of patients' information. And so MedRec was born, using Ethereum's smart contracts to link healthcare providers together, allowing them to securely share their health data. Only the patients can cryptographically sign smart contracts on the blockchain, ensuring that they're in control of where their medical history goes as they move from one provider to the other.