On Dec. 12, the second-largest health insurance company in the United States announced plans to leverage blockchain technology to secure the medical data of all its 40 million members over the next three years.
The most unique quality of a blockchain is that once a piece of information is added to the distributed ledger, it cannot be altered. The information stored on a blockchain is absolutely secure and trustworthy in its entirety. In order for a change to be made in one block, changes must be made to all the subsequent blocks associated to the affected block.