This book is intended to provide direction on using blockchain technology to facilitate secure access to individuals' medical data. It discusses ideas and concepts underlying current access methods and proposes a construct to hold transaction data as the individual engages with actors in the healthcare continuum. It concludes with limitations on the model proposed and the directions in which the work may be extended. The idea presented in the book is significant as it aims to address the issue of access to medical data and the risks posed to individuals, systems, and data.