Hacker News Reader

Maybe because nobody trusts any of them.

I hate to say it (because it makes me groan) but I really think a trustless blockchain based solution would work best where medical professionals/researchers require active consent before pulling your records, a trustless form of anonymization/pseudonymization is built into the platform and an immutable record of every query made and why is held forever.

View on HN

Wouldn't a blockchain make you vulnerable to a 51% attack? Imagine someone now has access to most people's health data - I'd imagine that's worth billions even on the black market.

You're assuming a mining based system. I don't think it would be a good idea to run this on Ethereum (for instance) at all.

I am admittedly not an expert on blockchain. So without mining, what makes this different from just having a voting mechanism where you need a majority?

Reply on news.ycombinator.com