I heard too about the enormous energy used by miners, and I heard also
some solutions for health-ICT.
Because the miners in Health-ICT are nor working as fast as they can
with dollar-signs in their eyes to create money, but they only create
keys to facilitate the needed processes. So, maybe the idle running
servers an create blocks, and they can use alternative methods which
have other quality-features then the bitcoin, because they have another
purpose. I don't know if it is feasible, but there are many publications
about this subject.
About the data-state. In OpenEhr there is a state-machine, which has, at
this moment no defined secure mechanism to ensure that the states truly
reflect reality.
Maybe OpenEhr is not the place to define that, that is my original question.
But if OpenEhr wants to secure the states of the statemachine,
blockchain can help.
For example, there is the often used medication-delivery-example. It has
been subscribed, delivered, and the patient has taken it or stopped it, etc.
A chain of these connected events can be ensured truly happened if they
are connected with blockchain. Their place in the chain of events is
secured, and not changeable.
Bert
On 13-11-17 13:32, Grahame Grieve wrote:
I am sceptical of most use cases of block chain outside payments
witnessing in some limited trading schemes. There are 2 inter-related
problems.
- block chain is a very inefficient solution to a problem that largely
does not exist in healthcare: untamperable evidence that something
happened, in the context of not having any trustable governor. In
almost all cases, we actually want to be able to tamper with the
record - except the audit trail. And/or suppress data from being
visible except to a few authorised parties. For the audit trail, the
average institution generates more data per day than block chain
presently holds - we are talking vast amounts of data
- the inefficiency is considerable - full block chain requires some
benefit to the miners - and in any volume of data, the price is
considerable (e.g. blockchain consumes more power than nigeria, I read
this week); that is not evident in any scheme I've seen, but schemes
that have restricted mining loads require restricted attack surfaces,
and I don't believe that there's a sweet spot there in healthcare
There are some interesting use cases around selective sharing data for
research using active blockchains (e.g. ethereum) but by and large
these seem outside the scope of records and EHRs to me
Grahame
On Mon, Nov 13, 2017 at 11:24 PM, Bert Verhees <[email protected]
<mailto:[email protected]>> wrote:
On 13-11-17 13:06, GF wrote:
What problem is BlockChain solving, that deployed technologies
can not solve?
Read the document I linked to in my previous message, you can read
dutch.
Gerard Freriks
+31 620347088 <tel:%2B31%20620347088>
[email protected] <mailto:[email protected]>
On 13 Nov 2017, at 12:46, Bert Verhees
<[email protected] <mailto:[email protected]>> wrote:
How are the plans about blockchain for OpenEhr? Is there
any plan to incorporate it in the standard, or is it
regarded as a technical implementers business?
Bert
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