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{{more citations needed|date=June 2014}}
In the context of [[cryptocurrency mining]], a '''mining pool''' is the pooling of resources by miners, who share their [[computer performance|processing power]] over a network, to split the reward equally, according to the amount of work they contributed to the probability of finding a [[blockchain (database)|block]]. A "share" is awarded to members of the mining pool who present a valid partial [[proof-of-work]]. Mining in pools began when the [[Bitcoin network#Difficulty|difficulty]] for mining increased to the point where it could take centuries for slower miners to generate a block. The solution to this problem was for miners to pool their resources so they could generate blocks more quickly and therefore receive a portion of the block reward on a consistent basis, rather than randomly once every few years.<ref>{{cite web |url=http://pandacoinpnd.org/individual-mining-and-mining-pools/ |archiveurl=https://web.archive.org/web/20150321102332/http://pandacoinpnd.org/individual-mining-and-mining-pools/ |archive-date=21 March 2015|title=Individual mining vs mining pool |date=2014-08-30}}</ref><ref>Ittay Eyal with Emin Gün Sirer:"[http://www.cs.cornell.edu/~ie53/publications/btcProcFC.pdf Majority is not Enough: Bitcoin Mining is Vulnerable] {{webarchive|url=https://web.archive.org/web/20161203222953/http://www.cs.cornell.edu/%7Eie53/publications/btcProcFC.pdf |date=2016-12-03 }}" in the 18th International Conference on Financial Cryptography and Data Security(FC).2014</ref><ref>{{cite web|last1=Eyal|first1=Ittay|title=The Miner's Dilemma|url=https://www.cs.cornell.edu/~ie53/publications/btcPoolsSP15.pdf|publisher=Cornel University|accessdate=2017-05-23|url-status=live|archiveurl=https://web.archive.org/web/20170809213507/http://www.cs.cornell.edu/%7Eie53/publications/btcPoolsSP15.pdf|archivedate=2017-08-09}}, In the IEEE Symposium on Security and Privacy (Oakland), 2015.</ref>
==History==
* '''Late 2010: ''' Slush launched the first mining pool
* '''2011–2013: ''' The era of deepbit, which at its peak, shares up to 45% of the network hashrate
* '''2013–2014: ''' Since the introduction of ASIC, and deepbit failed support the newer stratum protocol, GHash.IO replaced deepbit became the largest
* '''2014–2015: ''' Rise of China. F2Pool which launched in May 2013, replaced GHash.IO becoming the largest mining pool
* '''2016–2018: ''' Rise of Bitmain and its AntPool. Bitmain also controls a few other smaller pools like BTC.com and ViaBTC.
* '''2019–: ''' The launch of Poolin. Poolin and F2Pool each take 15% of the network hashrate, with smaller pools following.
==Mining pool methods==
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