  There continues to be a recent push to taking the cryptocurrency based ledger
system known as Blockchain and applying its techniques to non-financial
applications. One of the main areas for application remains Internet of Things
(IoT) as we see many areas of improvement as we move into an age of smart
cities. In this paper, we examine an initial look at applying the key aspects
of Blockchain to a health application network where patients health data can be
used to create alerts important to authenticated healthcare providers in a
secure and private manner. This paper also presents the benefits and also
practical obstacles of the blockchain-based security approaches in IoT.
