Blockchain is a new form of a shared database that relies on a decentralized authority and consensus systems to make sure the database is always correct and remains highly secure. With blockchain, no single user is allowed to make changes independently; any alteration to the database can only be executed when there is a consensus. Furthermore, all blockchain relies on cryptography (the art and science of encoding information so that it is difficult to decode) to ensure the database is secure and is essentially unhackable. Henrietta requires a permissioned blockchain, meaning that users must meet a specific set of requirements to perform certain actions within our platform. This permission structure will protect sensitive patient information and will also help put the patient back at the center of healthcare by requiring patients to grant providers access to their electronic health record and other relevant medical data.