This is very interesting. I work with Big Data (Hadoop) and continue to be very interested in how block chain and big data can be used together given the power of ML and it ability to run compute at massive scale on Hadoop. Metadata opportunities of creating granular patient population pools is something intriguing as well. As Hortonworks (HDP) and IBM are partners I would personally be interested in exploring this further as to where this could go. Interested? Thanks again for the great work. Tony