This article needs ostamyy bitcoin wiki citations for verification. Slush Pool is the oldest currently active mining pool.
Mining pools may contain hundreds or thousands of miners using specialized protocols. Miners are paid out from the pool’s existing balance and can withdraw their payout immediately. This model allows for the least possible variance in payment for miners while also transferring much of the risk to the pool’s operator. In other words, all shares are equal, but its cost is calculated only in the end of a round. This reduces the ability to cheat the mining pool system by switching pools during a round, to maximise profit.
PPLNS method is similar to Proportional, but the miner’s reward is calculated on a basis of N last shares, instead of all shares for the last round. Therefore, if the round was short enough all miners get more profit, and vice versa. GM was invented by Meni Rosenfeld. It is based on the same “score” idea, as Slush’s method: the score granted for every new share, relatively to already existing score and the score of future shares, is always the same, thus there is no advantage to mining early or late in the round. If the share is a valid block, end the round.
Generalized version of Geometric and PPLNS methods. PPLNS, with exponential decay instead of a step function. Multipools switch between different altcoins and constantly calculate which coin is at that moment the most profitable to mine. Two key factors are involved in the algorithm that calculates profitability, the block time and the price on the exchanges.
The best mining pools of 2018 for cryptocurrency”. Archived from the original on 21 March 2015. Ittay Eyal with Emin Gün Sirer:”Majority is not Enough: Bitcoin Mining is Vulnerable Archived 2016-12-03 at the Wayback Machine. Analysis of Bitcoin Pooled Mining Reward Systems. Archived from the original on 2018-01-14. This page was last edited on 3 May 2018, at 15:55. The symbol was encoded in Unicode version 10.