Author Topic: Blockchain technology  (Read 3599 times)

SharperDingaan

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Re: Blockchain technology
« Reply #10 on: November 08, 2017, 10:39:10 AM »
I think blockchain is going to be crucial in proving identity and validity of information.  We all know that pictures can be photoshopped, but the same capability is now available to edit video and even voice.  You can edit a video of someone now and make them say anything you wish them to say.  When you see a video how will you know it is real?    If people upload videos to a blockchain signed with their personal key (or audio like in podcasting) then when someone sends me a clip of you saying that you are have joined the Nazi party and think the white race is biologically superior, I won't believe it unless it was uploaded to the blockchain and signed by you personally.

The problem of proving identity does not need a blockchain to be solved. You can simply use digital signatures, e.g., PGP. In your example the blockchain would be useful for removing intermediaries (e.g. Youtube, GMail). Blockchain can also be used for cutting out middlemen like Goldman Sachs, AIG, etc.

In public service blockchain is primarily used for 1) Verification, 2) Asset Movement, 3)Ownership, and 4) Indentities.
Just these 4 alone covers a huge range of applications.

SD



KinAlberta

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Re: Blockchain technology
« Reply #11 on: January 09, 2018, 03:40:14 PM »
He leaves this comment pretty unsubstantiated: 
"best portfolio of blockchain-related assets"


Overstock's Huge Upside Hinges On Blockchain;...
excerpt:
Forte’s bull case for Overstock is all about the company’s Medici Ventures portfolio of 10 investments related to blockchain technology. ...
“Given our view that not only is there tremendous value in its holdings, but it owns, by far, the best portfolio of blockchain-related assets among current publicly-traded equities, we believe the stock merits such a valuation,” Forte wrote in a Monday note.

https://www.benzinga.com/analyst-ratings/analyst-color/18/01/11000795/overstocks-huge-upside-hinges-on-blockchain-da-davidson





tengen

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Re: Blockchain technology
« Reply #12 on: January 09, 2018, 04:28:09 PM »
Today Kodak announced KODAKCoin and the stock price doubled. Still waiting for ParsadCOIN.

rkbabang

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Re: Blockchain technology
« Reply #13 on: January 10, 2018, 05:29:45 AM »
Today Kodak announced KODAKCoin and the stock price doubled. Still waiting for ParsadCOIN.


MoviePass owner hints at ICO
https://seekingalpha.com/news/3322080-blockchain-watch-moviepass-owner-hints-ico

BeerBBQ

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Re: Blockchain technology
« Reply #14 on: January 10, 2018, 06:03:41 AM »


Per disclosure, I teach how to strategically implement block chain technology at the University of Toronto.
4 months ago the course didn't exist - & in that short time, I've taught close on 50 people.

SD

Do you have any thoughts on the energy consumption and transaction speed (7-10 per second) that are often cited as reasons that blockchain will not be able to scale? More specifically, is it possible for blockchain to achieve mass adoption for various use cases with those two hindrances core to the protocol? 

Thanks


 

clutch

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Re: Blockchain technology
« Reply #15 on: January 10, 2018, 06:57:07 AM »


Per disclosure, I teach how to strategically implement block chain technology at the University of Toronto.
4 months ago the course didn't exist - & in that short time, I've taught close on 50 people.

SD

Do you have any thoughts on the energy consumption and transaction speed (7-10 per second) that are often cited as reasons that blockchain will not be able to scale? More specifically, is it possible for blockchain to achieve mass adoption for various use cases with those two hindrances core to the protocol? 

Thanks
 

If you think about it, power required and speed (especially the latter) are limitations to almost any technological advancement. But we figure out improvements in both software and hardware to make technologies viable. Aircrafts, EV, computer graphics, machine learning, ...

SharperDingaan

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Re: Blockchain technology
« Reply #16 on: January 10, 2018, 06:59:27 AM »


Per disclosure, I teach how to strategically implement block chain technology at the University of Toronto.
4 months ago the course didn't exist - & in that short time, I've taught close on 50 people.

SD

Do you have any thoughts on the energy consumption and transaction speed (7-10 per second) that are often cited as reasons that blockchain will not be able to scale? More specifically, is it possible for blockchain to achieve mass adoption for various use cases with those two hindrances core to the protocol? 

Thanks
 

A blockchain will run on EITHER a database OR a distributed ledger. 95% of applications do not need the distributed ledger.
Furthermore; energy consumption, and slow transaction speed, is only an issue for the distributed ledger. There are no scale issues with databases, and they are used extensively in the D5 nations where scaled blockchain solutions are widespread.

The simplest analogy is to look at the manufacturing supply chain.

Pre-blockchain we used an ERP system running on a database, and it served our functional requirements very well. Blockchain on a database would just address the functionality in a different way, but with about the same transaction speed. Blockchain on a distributed ledger would also do the same thing, but it would make each transaction 'super secure' at the cost of a major reduction in processing speed. Most folks would argue that the value proposition doesn't warrant it, and that the customer would not pay for the 'super security'. Therefore no distributed ledger.

Smart contracts run 'on top of' both databases and distributed ledgers. The manufacturer just needs to set up as the Oracle, provide a smart contract writer, list their product via customized offers, and integrate it with their existing ERP system, and collection facilities. As soon as 'offer' becomes 'contract' - either manufacturing commences, or inventory flows out the warehouse against guaranteed payment - with most of the 'back office' processing eliminated. When you're working on JIT, you cant afford the uncertainty as to whether it might take 10 minutes or 7 hours+ for a miner to verify your block on a distributed ledger. Therefore no distributed ledger.

Needles to say 'not popular among the developer community'.

SD
 

KinAlberta

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Re: Blockchain technology
« Reply #17 on: January 11, 2018, 09:38:25 AM »
Thanks for posting this information. That's very interesting.

BeerBBQ

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Re: Blockchain technology
« Reply #18 on: January 11, 2018, 02:41:43 PM »
Thanks SD!

tengen

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Re: Blockchain technology
« Reply #19 on: January 18, 2018, 12:10:19 PM »
Anyone looking at the two "blockchain ETFs" (BLOK and BLCN) that started trading on NASDAQ?

BLOK will be actively managed. BLCN will invest in the "Reality Shares Nasdaq Blockchain Economy Index". Both will limit themselves to only investing in companies with a market capitalization of greater than $200 million, as well as a six-month daily trading average of at least $1 million.

BLOK web page: https://amplifyetfs.com/blok-amplify-transformational-data-sharing-etf
BLCN web page: http://www.realityshares.com/app/BLCN