One problem with blockchain is that people think every blockchain is secure, anonymous and decentralized – but that really depends on the specific implementation.
You can probably still create a proof of something-that-is-not-work-or-space that is reasonably decentralized, given you have enough independent parties who can authorize blocks, a mechanism to decide how to trust new authorizing parties and a good tamper-proof protocol including for example strict rate limiting. But the very nature of storing healthcare related data in a public blockchain seems very tricky to me anyway – almost any implementation would need to be able to handle attacks where you link multiple pieces of data to the same person or party without having explicit permission to do so. Regards, Pieter Bos From: openEHR-technical <[email protected]> on behalf of Grahame Grieve <[email protected]> Reply-To: For openEHR technical discussions <[email protected]> Date: Tuesday, 14 November 2017 at 17:02 To: For openEHR technical discussions <[email protected]> Subject: Re: Aw: Re: Blockchain bitcoin doesn't use a reduced proof of work. That's the costly feature of it, and why it's genuinely distributed. Grahame On Wed, Nov 15, 2017 at 2:55 AM, Bert Verhees <[email protected]<mailto:[email protected]>> wrote: On 14-11-17 16:39, Grahame Grieve wrote: either you end up falling back to a central authority after all - Can you explain why? Bitcoin, f.e. is about billions of dollars without central authority, that is one of the reasons the Chinese government prohibited the creation (although they do not admit this real reason) Bert _______________________________________________ openEHR-technical mailing list [email protected]<mailto:[email protected]> http://lists.openehr.org/mailman/listinfo/openehr-technical_lists.openehr.org -- ----- http://www.healthintersections.com.au / [email protected]<mailto:[email protected]> / +61 411 867 065 _______________________________________________ openEHR-technical mailing list [email protected] http://lists.openehr.org/mailman/listinfo/openehr-technical_lists.openehr.org
