This post is part of CoinDesk’s 2019 Year in Review, a collection of 100 op-eds, interviews and takes on the state of blockchain and the world. Dr. Alex Cahana is head of healthcare and blockchain consulting at Genesis Block. At the end of 2018, while awakening from the Crypto Winter, a group of noted healthcare professionals led by Mayo Clinic’s John Halamka predicted that 2019 would be a pivotal year for blockchain in the healthcare industry. They said blockchain would become an essential...