Re: Blockchain

2017-11-14 Thread Bert Verhees
On 14-11-17 17:44, GF wrote: In other words: What is BlockChain solving? My answer: it solves non-repuduation without a third trusted party. It also allows to chain events ___ openEHR-technical mailing list openEHR-technical@lists.openehr.org

Re: Blockchain

2017-11-14 Thread GF
In other words: What is BlockChain solving? My answer: it solves non-repuduation without a third trusted party. Correct? GF Gerard Freriks +31 620347088 gf...@luna.nl Kattensingel 20 2801 CA Gouda the Netherlands > On 14 Nov 2017, at 17:31, Pieter Bos wrote: > >

Re: Blockchain

2017-11-14 Thread Pieter Bos
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

Re: Aw: Re: Blockchain

2017-11-14 Thread Grahame Grieve
> > > Agreed, but a third party that would just be in charge of making certain > that the blockchain is unaltered has nothing to do with the business > involved. It is a technical trusted party, and there is no true reason it > should be expensive (for example, it could publish the hash of the >

Re: Aw: Re: Blockchain

2017-11-14 Thread Grahame Grieve
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 wrote: > On 14-11-17 16:39, Grahame Grieve wrote: > >> either you end up falling back to a central

Re: Aw: Re: Blockchain

2017-11-14 Thread Philippe Ameline
Le 14/11/2017 à 16:39, Grahame Grieve a écrit : > In the healthcare related blockchain ideas or prototype > implementations I have heard about so far something different than > proof of work is used, for example proof of authority. That has > other drawbacks and challenges, but it

Re: Aw: Re: Blockchain

2017-11-14 Thread Bert Verhees
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

Re: Aw: Re: Blockchain

2017-11-14 Thread Grahame Grieve
> > In the healthcare related blockchain ideas or prototype implementations I > have heard about so far something different than proof of work is used, for > example proof of authority. That has other drawbacks and challenges, but it > does not suffer from the same power consumption problems. >

Aw: Re: Re: Blockchain

2017-11-14 Thread Karsten Hilbert
> You may want to check internet access packages in the Himalayas or Sahara > before you setup shop there Bert ;) As for that, Namche had faster internet than myself at home, last time I checked. Karsten ___ openEHR-technical mailing list

Re: Aw: Re: Blockchain

2017-11-14 Thread Pieter Bos
In the healthcare related blockchain ideas or prototype implementations I have heard about so far something different than proof of work is used, for example proof of authority. That has other drawbacks and challenges, but it does not suffer from the same power consumption problems. Also any

Re: Aw: Re: Blockchain

2017-11-14 Thread Bert Verhees
On 14-11-17 16:24, Seref Arikan wrote: You may want to check internet access packages in the Himalayas or Sahara before you setup shop there Bert ;) I am not really into that technical knowledge like radio-modulation or laser-light modulation. But when they communicate with the Hubble

Re: Aw: Re: Blockchain

2017-11-14 Thread Seref Arikan
You may want to check internet access packages in the Himalayas or Sahara before you setup shop there Bert ;) On Tue, Nov 14, 2017 at 3:20 PM, Bert Verhees wrote: > On 14-11-17 16:02, Philippe Ameline wrote: > >> It can currently been argued that this competition led to

Re: Aw: Re: Blockchain

2017-11-14 Thread Bert Verhees
On 14-11-17 16:02, Philippe Ameline wrote: It can currently been argued that this competition led to concentrating miners in China... but what could possibly go wrong? Bitcoin is since a few weeks prohibited in China but it seems hard to kill. But still, I don't think the use of blockchain in

Re: Blockchain

2017-11-14 Thread Alejandro Benavides
It must be clear that Blockchain is not a complete solution and should be seen as a piece within the gear. Who we have approached blockchain, we see it as an opportunity for innovation, which needs "some surgery" to be used in the health area, and that its current implementation is not to make

Re: Blockchain

2017-11-14 Thread Bert Verhees
On 14-11-17 15:50, Bert Verhees wrote: Can it be that data refer to data on other systems, or may they only refer to data on the same system, copies of data from other systems? In the Netherlands we have a national system called the LSP, which makes medical data available to other

Re: Aw: Re: Blockchain

2017-11-14 Thread Philippe Ameline
Le 14/11/2017 à 12:31, Karsten Hilbert a écrit : >> A Blockchain is a public (or at least shared) digital notary. > ... >> transactions are more expensive without a third party, because you need >> to make the process of adding a new block "expensive enough" in order to >> make sure that the one

Re: Blockchain

2017-11-14 Thread Bert Verhees
I think we are heading an era where it can be impossible to tell where from and/or when data are received /created and which event created the data or made the data cause to interchange when the data do not tell us themselves on an accountable way. For that we need an open notary-system which