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Key Highlights ETH price managed to move above the $43.20 resistance against the US Dollar. Yesterday’s highlighted bearish trend line with resistance near $43-$44 on the hourly chart (ETH/USD, data feed via SimpleFX) was broken. The price traded higher, but failed to hold the momentum above $44.80, signaling caution. Ethereum price made a minor upside …
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[Digitalbits] Blockchain For You – muni kasi – Medium The interaction between human beings is no longer only linked to the existence of a conversation between the two, but can also take various forms. Interaction […]
Bitmain CEO Jihan Wu has vowed to respond ‘soon’ to accusations the miner is exploiting a bitcoin vulnerability to manipulate mining.
A “covert” use of so-called ASICBOOST technology was to the Core mailing list by contributor Greg Maxwell Wednesday. This would allow “a major manufacturer” to unfairly profit from centralization.
While Bitmain was not named by Maxwell, community sources subsequently confirmed the company’s involvement.
In case there was any dispute, I confirmed with a source that the mining hardware manufacturer discussed in gmaxwell's post is Bitmain.
— Kyle Torpey (@kyletorpey)
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Maxwell wrote:
Exploitation of this vulnerability could result in payoff of as much as $100 million USD per year at the time this was written (Assuming at 50% hash-power miner was gaining a 30% power advantage and that mining was otherwise at profit equilibrium). This could have a phenomenal centralizing effect by pushing mining out of profitability for all other participants, and the income from secretly using this optimization could be abused to significantly distort the bitcoin ecosystem in order to preserve the advantage.
The Core developer also proposed solutions to prevent the attack becoming a major problem, in a move praised by Tone Vays as “a huge confidence boost” for the SegWit supporters.
Wu meanwhile stated Bitmain would provide a statement “soon.”
Someone made a probability math wrong. Go back and check it. A statement from Bitmain will come soon.
— Jihan Wu (@JihanWu)
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Previously, suspicion had already fallen on the Unlimited supporter, with community members noting he had about ASICBOOST. They added Wu’s BU support could be linked to the Bitmain operation.
While ASICBOOST was originally invented by Sergio Lerner among others, who also contributes to SegWit concepts, Maxwell stated that none of the technology’s creators were “aware” of the exploit.
“Reverse engineering of a mining ASIC from a major [manufacturer] has revealed that it contains an undocumented, undisclosed ability to make use of this attack. (The parties claiming to hold a patent on this technique were completely unaware of this use.),” he continued.
On the above basis the potential for covert exploitation of this vulnerability and the resulting inequality in the mining process and interference with useful improvements presents a clear and present danger to the bitcoin system which requires a response.
In Summer 2016, KnCMiner declared bankruptcy over the bitcoin block reward halving causing them unsustainable overheads.
This statement from bankrupted KnCMiner's CEO over a year ago explains today's news:
— Miles Suter (@WahWhoWah)
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The firm had previously been taken to court in its native Sweden by customers complaining over delays and defects with its products.
The startup had meanwhile raised over $32 million in investment.
What do you think about Greg Maxwell’s post? Let us know in the comments below!
Images courtesy of Twitter, Shutterstock
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