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GHash.io & Hypothetical 51% Attack on Bitcoin
GHash.io & Hypothetical 51% Attack on Bitcoin
Published: 2014/06/13
Channel: Bitsonline
ঘাস |  GHASH | Eid Telefilm 2018 | Chumki | Ashok | Channel i Tv
ঘাস | GHASH | Eid Telefilm 2018 | Chumki | Ashok | Channel i Tv
Published: 2018/06/22
Channel: Channeli Tv
I hate you~Ghash
I hate you~Ghash
Published: 2016/04/11
Channel: Mariah Lambert
GHash.io и CEX.io инструкция по регистрации и майнингу на Мультипуле для профессионалов.
GHash.io и CEX.io инструкция по регистрации и майнингу на Мультипуле для профессионалов.
Published: 2014/04/14
Channel: Майнер,Майнинг,Криптовалюта
How To Start Cloud Mining With CEX.io GHASH.io
How To Start Cloud Mining With CEX.io GHASH.io
Published: 2014/02/10
Channel: budymoney
Farewell Ghash Gut Ripper
Farewell Ghash Gut Ripper
Published: 2017/11/06
Channel: AlexFili's Youtube
6/16/14 - Ghash.io calms the masses, Coin Pocket back on iOS, & BitGo raises $12 Million
6/16/14 - Ghash.io calms the masses, Coin Pocket back on iOS, & BitGo raises $12 Million
Published: 2014/06/17
Channel: Money & Tech
Miners ditch Ghash.io -- Bittylicious goes Litecoin -- Bitcoin for Botswana, Africa
Miners ditch Ghash.io -- Bittylicious goes Litecoin -- Bitcoin for Botswana, Africa
Published: 2014/01/09
Channel: MadBitcoins
GHash.io Promises to Limit Bitcoin Hashing Power to 40%
GHash.io Promises to Limit Bitcoin Hashing Power to 40%
Published: 2014/07/19
Channel: Bitsonline
Ghash
Ghash 'I Hate You I Love You' (Remix) by BDogRaps
Published: 2016/09/03
Channel: TeamProdigyRap
240 GHash  Заливка 12 штук Dr100 иммерсионное охлаждение   Liquid Immersion Cooling  Pouring the Oil
240 GHash Заливка 12 штук Dr100 иммерсионное охлаждение Liquid Immersion Cooling Pouring the Oil
Published: 2018/04/29
Channel: MrIcemenWhite
Coin Brief Podcast #3: GHash.io, Silk Road Coins & Bogus Market Analysts
Coin Brief Podcast #3: GHash.io, Silk Road Coins & Bogus Market Analysts
Published: 2014/06/13
Channel: Bitsonline
Bitcoin 101 - The Nightmare of a 51% Attack - Part 1 - Calculating the Costs
Bitcoin 101 - The Nightmare of a 51% Attack - Part 1 - Calculating the Costs
Published: 2014/04/12
Channel: CRI
Everything You Need to Know About Bitcoin: VICE Podcast 027
Everything You Need to Know About Bitcoin: VICE Podcast 027
Published: 2014/01/09
Channel: VICE
What is a 51% Attack - Bitcoin Tutorial
What is a 51% Attack - Bitcoin Tutorial
Published: 2014/04/01
Channel: Ofir Beigel
1 Ghash Bitcoin Cloud Mining
1 Ghash Bitcoin Cloud Mining
Published: 2017/08/09
Channel: Wim Mckinney
Bitcoin miner ghash.io
Bitcoin miner ghash.io
Published: 2014/08/27
Channel: João Andrioli
Cloudmining with CEX.io and GHASH.io
Cloudmining with CEX.io and GHASH.io
Published: 2014/09/03
Channel: Bitcoin Video News Channel
How To Set CPUMINER Ghash io BTC
How To Set CPUMINER Ghash io BTC
Published: 2014/04/06
Channel: Muhamad Revandri
Geetanagar concert/gantabya@ Ghash khatne and hamri aama mashup
Geetanagar concert/gantabya@ Ghash khatne and hamri aama mashup
Published: 2016/11/07
Channel: gan tabya
1.2GHash/s GPU Bitcoin and Litecoin Mining Rig
1.2GHash/s GPU Bitcoin and Litecoin Mining Rig
Published: 2014/01/23
Channel: A Bitcoin
Hur man startar ett konto hos CEX.IO (GHASH.IO)
Hur man startar ett konto hos CEX.IO (GHASH.IO)
Published: 2014/04/17
Channel: Linus Dunkers
Ghash.io Prevents 51% + Insured Bitcoin Storage + bitaddress.org | Morning Bit Ep 37
Ghash.io Prevents 51% + Insured Bitcoin Storage + bitaddress.org | Morning Bit Ep 37
Published: 2014/01/09
Channel: MorningBit
The Bitcoin Group #12 (Live) - Overstock.com Accepts Bitcoin -- Miners ditch Ghash.io -- IRS Bitcoin
The Bitcoin Group #12 (Live) - Overstock.com Accepts Bitcoin -- Miners ditch Ghash.io -- IRS Bitcoin
Published: 2014/01/10
Channel: thebitcoingroup
Advertencia: problemas con ghash.io
Advertencia: problemas con ghash.io
Published: 2015/03/08
Channel: Audricd
Koppla upp AntMiner S1 mot CEX.IO (GHASH.IO)
Koppla upp AntMiner S1 mot CEX.IO (GHASH.IO)
Published: 2014/04/19
Channel: Linus Dunkers
Ghash.io not recording the work that IS being done
Ghash.io not recording the work that IS being done
Published: 2014/05/04
Channel: Brandon Rising
Создаем WORKER на ПУЛЕ ghash
Создаем WORKER на ПУЛЕ ghash
Published: 2016/05/18
Channel: С НУЛЯ
ghash katae
ghash katae
Published: 2017/08/10
Channel: hark Shahi
Miner du Bitcoin - Définition et exemple de GHash.IO
Miner du Bitcoin - Définition et exemple de GHash.IO
Published: 2014/07/17
Channel: Actualité et achat de Bitcoins
TerraHash Sample K16 hashing at 4 GHash/sec!
TerraHash Sample K16 hashing at 4 GHash/sec!
Published: 2013/07/13
Channel: TerraHash
GHash io и CEX io инструкция по регистрации и майнингу на Мультипуле для профессионалов
GHash io и CEX io инструкция по регистрации и майнингу на Мультипуле для профессионалов
Published: 2014/12/05
Channel: Виталий Прокопенко
The case of GHash.io and why bitcoin POW economic incentives work
The case of GHash.io and why bitcoin POW economic incentives work
Published: 2018/03/31
Channel: sken
HashBuster Nano 2.6 GHash/sec USB bitcoin miner
HashBuster Nano 2.6 GHash/sec USB bitcoin miner
Published: 2013/09/17
Channel: n-gage
GHash io и CEX io инструкция по регистрации и майнингу на Мультипуле для профессионалов
GHash io и CEX io инструкция по регистрации и майнингу на Мультипуле для профессионалов
Published: 2014/09/08
Channel: CEX
GHash io и CEX io инструкция по регистрации и майнингу на Мультипуле для профессионалов
GHash io и CEX io инструкция по регистрации и майнингу на Мультипуле для профессионалов
Published: 2015/05/18
Channel: Александр Горских
Ghash - Goat (Preview)
Ghash - Goat (Preview)
Published: 2017/09/25
Channel: PestProdPromo
Setup CEX.io API Access
Setup CEX.io API Access
Published: 2014/02/22
Channel: Little Gem Software
GHash io и CEX io инструкция по регистрации и майнингу на Мультипуле для профессионалов 1
GHash io и CEX io инструкция по регистрации и майнингу на Мультипуле для профессионалов 1
Published: 2017/10/15
Channel: Ledger Nano S Carteira de hardware Cryptocurrency
GHash io и CEX io инструкция по регистрации и майнингу на Мультипуле для профессионалов
GHash io и CEX io инструкция по регистрации и майнингу на Мультипуле для профессионалов
Published: 2014/09/02
Channel: Nata Zaharova
Cloud bitcoin mining (cex.io)
Cloud bitcoin mining (cex.io)
Published: 2013/12/01
Channel: Kim Koldtoft
Sgminer GC3355 gridseed bfminer 300 k/h miner ltc cex.io ghash.io
Sgminer GC3355 gridseed bfminer 300 k/h miner ltc cex.io ghash.io
Published: 2015/06/05
Channel: Прид Урки
Ghâsh - Goat (Full EP)
Ghâsh - Goat (Full EP)
Published: 2017/03/18
Channel: Ghash Official
PSA - GHash reaching dangerous levels of network hashrate.
PSA - GHash reaching dangerous levels of network hashrate.
Published: 2014/06/12
Channel: CryptoCoinsNews
Lojjaboti Ghash
Lojjaboti Ghash
Published: 2018/04/23
Channel: what ever you want here
I Hate You, I Love You - Ghash Cover
I Hate You, I Love You - Ghash Cover
Published: 2018/03/11
Channel: Isabelle Stirle
Ghash The Singer #Gaming #ShadowofWar
Ghash The Singer #Gaming #ShadowofWar
Published: 2017/11/03
Channel: Payday Productions HD
Ghash catai
Ghash catai
Published: 2018/05/05
Channel: Omprakash Rajwade
C natty x Ghash x leke lee Olosho freestyle
C natty x Ghash x leke lee Olosho freestyle
Published: 2016/11/11
Channel: C_Natty Nattitainment
6/9/14 - GHash nears 51%, digital currency grows in South Africa, & the NYC Bitcoin Fair
6/9/14 - GHash nears 51%, digital currency grows in South Africa, & the NYC Bitcoin Fair
Published: 2014/06/09
Channel: Money & Tech
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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GHash.IO
Industry
Founded July 2013
Area served
Worldwide
Website ghash.io

GHash.IO is a bitcoin mining pool having operated from 2013 and allowed bitcoins to mine using personal hardware or cloud-based mining power. In October, 2016, GHash.IO pool has been closed. At the moment, the team behind former GHash.IO pool offer enterprise mining solutions upon request. [1]

The collective value of the bitcoin mined in this pool was over $200 million in its first year.[2] GHash.IO worked in conjunction with CEX.IO bitcoin exchange. Apart from mining bitcoin, GHash.IO hosted a Multipool for mining altcoins, as well as separate pools for mining Litecoin, Dogecoin, Auroracoin and Darkcoin. Altcoin mining options were available for independent miners, while bitcoin mining could also be done in the cloud by purchasing cloud-based mining power on CEX.IO Exchange.

Partnership with CEX.IO[edit]

Traders on CEX.IO could buy shares of Ghash.IO mining hardware to operate on the Ghash.IO mining pool. This is an innovative form of cloud mining which allows miners to enter and leave the bitcoin mining market quickly, without needing to purchase mining hardware. Although most traders take advantage of these cloud mining features of Ghash.IO, actual mining hardware could also be redeemed through CEX.IO. After GHash.IO closed in 2016, CEX.IO continued operating as a bitcoin exchange.

PPLNS[edit]

GHash.IO used PPLNS (“Pay per last N shares”), a reward scheme in which payment is given to shares within a 'window' of time, beginning with the last share submitted and increasing up to the last N number of shares.[3] Shares submitted before this window are not paid. Shares are hashes, smaller than the target with a difficulty of 1 (usually pools use the same difficulty as the target for shares, but technically any difficulty could be used). Every hash created has a 1 in 232 possibility of being a valid share. In order to mine bitcoin in a more evenly-distributed and predictable way, miners often use pools; if this is the case, miners are awarded bitcoins according to the shares they submit.

Merged mining[edit]

GHash.IO contained merged mining operations from several alternative cryptocurrencies, including NMC (Namecoin), IXC (IXCoin) and DVC (Devcoin).

Multipool[edit]

On April 8, 2014, GHash.IO presented a new script-mining feature, GHash.IO Multipool, which enabled users to mine the most financially rewarding coins at any given moment and benefit from additional settings, such as the conversion and the switch settings. This new feature allowed users to mine new cryptocurrencies and convert them into bitcoins or Litecoins, as well as to set the miner to withdraw from the current job when switching coins. The Multipool-Pro functions on the basis of the proportional reward system — when a given block is mined, the reward is divided up among all workers proportionally according to the size of their share.

51% attack controversy[edit]

Due to the popularity of Ghash.IO's mining pool, many people in the bitcoin community were often worried about the possibility of a 51% attack. This kind of attack occurs when a single miner or mining pool is able to mine multiple bitcoin block rewards in a row. This would be a problem for the bitcoin network, because it hypothetically allows the mining pool to double-spend bitcoins. In July 2014, the GHash.IO mining pool exceeded the 51% threshold, which forced the bitcoin community to discuss the possibility of finding a common solution to this threat.

Since it is currently difficult to develop a long-term solution to this problem, the participants agreed to implement some temporary measures. Accordingly, GHash.IO released a voluntary statement, promising that it will not exceed 39.99% of the overall bitcoin hashrate. Moreover, GHash.IO representatives asked other mining pools to follow their example for the sake of the entire bitcoin community.[4] It also stated that a new committee should be created to act as a watchdog against the 51% problem.[5] This committee would include representatives of the mining pools, bitcoin businesses and other specialists in the field.

The 51% discussion received a broad coverage in the media, as well as other publications focused on cryptocurrency news.[4] ArsTechnica,[6] Bloomberg View,[7] Vice Motherboard, International Business Times,[8]

References[edit]

  1. ^ "Interview with Jeffrey Smith of GHash.IO". Cointelegraph. 16 March 2014. 
  2. ^ "GHash Mining Pool Generates $250 Million in Bitcoin in One Year". CoinDesk. Retrieved 13 August 2015. 
  3. ^ Buterin, Vitalik. "On Mining — Bitcoin Magazine". Bitcoin Magazine. Retrieved 17 January 2018. 
  4. ^ a b Alex Wilhelm (16 July 2014). "Popular Bitcoin Mining Pool Promises To Restrict Its Compute Power To Prevent Feared '51%' Fiasco". Techcrunch. 
  5. ^ Stan Higgins (16 July 2014). "GHash Commits to 40% Hashrate Cap at Bitcoin Mining Summit". Coindesk. 
  6. ^ "Bitcoin pool GHash.io commits to 40% hashrate limit after its 51% breach". ArsTechnica. 2014-07-16. Retrieved 2014-10-14. 
  7. ^ Bershidsky Leonid (17 July 2014). "Trust Will Kill Bitcoin". Bloomberg View. 
  8. ^ Anthony Cuthbertson (17 July 2014). "Cryptocurrency News Round-Up: App Teaches Bitcoin to Children & GHash Commits to 40% Hashrate". International Business Times. 

External links[edit]

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