Hi mate, thanks for responding.
I get the use of blockchain. Its a secure way of storing DNA data. Dencetralized. Its a secure way of storing any form of sensitive data.
I am assuming here, and please correct me if I am wrong, that medical research companies probably pay for a very specific type of DNA dataset. Samples that they can study to find cures to uncommon conditions or possibly for cancer research etc. As far as a generic sample of DNA is concerned, it can be collected from restaurants, hair cutting salons, coffee shops and it will be anonymous. People are leaving their DNA in the air everyday and they aren't worried about losing sensitive information. What they are worried about is talk they have with a psychiatrist or people getting to know about their medical conditions, if they don't want to disclose it. Moreover, if a name tag is not attached to a DNA sample, it is pretty anonymous, unless, someone finds that person and does a DNA test again to match it with an anonymous sample they found.
Medical records yes, and even now I don't think people will be willing to sell their medical records for money, specially if they consider it sensitive. Because if a medical research company can buy data or access data from shivom, then that company can lose that data. Risk isn't mitigated at all.
And trust me on this. If you hear any news coming out of India about MoUs specifically, just ignore them. The information technology minister for state of Andhra Pradesh in India is the Chief Miniter's son and is pretty young. The blockchain bug must have bit him and this must have been for the upcoming elections in the state. I am from India and I can tell you how politics in India works.