Apologies for being out of touch - I've been traveling this week. Here's a slide I made for a talk about blockchains in health that people have found useful: Trust and personal data - identifying the patient that is the subject of the data, - identifying the user requesting patient data, - recording and auditing the authorization to release the patient data, - establishing the authenticity of the data that is being released, - paying for the service that delivered the patient data, - controlling and auditing that the shared data was used as expected. Many blockchains and standards Adrian On Fri, Sep 30, 2016 at 11:52 AM, James Hazard wrote:

Yes, a great chart by Bart. Most applications get kicked out of the blockchain sphere on:

- the second condition - "does it require shared write access," which will ordinarily be no, or - on the third condition "are writers known and trusted," which will ordinarily be yes.

Both are directly affected by identity. As I understand it, identity management, GDPR etc. have the goal of making the answers be "no" and "yes" as often as possible.

On Fri, Sep 30, 2016 at 11:37 AM, Eve Maler wrote:

...

This is extremely good -- and it's written by Bart S, before his exit from Philips Blockchain Lab. Interesting. (BTW, I've used that "Dilbert" before, but it's actually fake...)

The lower part of the flowchart is, as yet, unproven, and that's what we're unpacking:

- *Do you need to control functionality?* Does he mean "Do individuals need greater control in the transaction?" or something similar? And if so, what if you're trying to solve for that simultaneously with a business model in which it makes most sense for "*writers to be known and trusted*" a la my ATM example yesterday? - *Do you want transactions to be private or public?* There's a big logic leap here, since there are only two choices and they both lead to some sort of blockchain. :-)

*Eve Maler*ForgeRock Office of the CTO | VP Innovation & Emerging Technology Cell +1 425.345.6756 | Skype: xmlgrrl | Twitter: @xmlgrrl *ForgeRock Summits and UnSummits* are coming to http://summits.forgerock.com/ *London and Paris!*

On Fri, Sep 30, 2016 at 7:57 AM, John Wunderlich wrote:

...

https://medium.com/@bsuichies/why-blockchain-must-die-in-201 6-e992774c03b4#.5njgtl5na

This is the posting that contains a"Do you even need a blockchain" flowchart that fits into discussions of scope etc.

Sincerely, John Wunderlich @PrivacyCDN https://twitter.com/PrivacyCDN

Call: +1 (647) 669-4749 eMail: john@wunderlich.ca

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