Mining Pools

If you’re deciding whether to join a mining pool or not, it can be helpful to think of it like a lottery syndicate – the pros and cons are exactly the same. Going solo means you won’t have to share the reward, but your odds of getting a reward are significantly decreased. Although a pool has a much larger chance of solving a block and winning the reward, that reward will be split between all the pool members. In bitcoin’s case, the current difficulty level is so high that it’s practically impossible for soloists to make a profit mining. Unless, of course, you happen to have a garage full of ASICs sitting in Arctic conditions. If you’re a beginner, joining a mining pool is a great way to reap a small reward over a short period of time. Indeed, pools are a way to encourage small-scale miners to stay involved. What to mine? Of course, bitcoin is not the only currency out there – we sort out a lists of mining pools for your chosen cryptocurrency in 2014 under SHA-256 algorithm :- Bitcoin(BTC), amkoin(AMK), arkhash(ARK), AsicCoin(ASC), battlecoin(BCX), ben(BEN), Betacoin(BET), bonuscoin(BNS), bitpeso(BTP), coin2(C2), cryptoeagle(CREA), continuumcoin(CTM), dem(DEM), devcoin(DVC), ferengicoin(FER), FireFlyCoin(FFC), freicoin(FRC), fastcoinsha(FSS), hongkongcoin(HKC), IXCoin(IXC), cryptoloot(LOOT), mazacoin(MZC), Namecoin(NMC), orobit(ORO), OpenSourceCoin(OSC), pmc(PMC), PPCoin(PPC), ptcoin(PT), pwnycoin(PWNY), scotcoin(SCOT), shacoinnew(SHA), speedcoin(SPC), STLcoin(STL), takicoin(TAK), teacoin(TEA), Tekcoin(TEK), Tigercoin(TGC), terracoin(TRC), unbreakablecoin(UNB), Unobtanium(UNO), version(V), wearesatoshi(WAS), Joulecoin(XJO), creds(XXC), Zetacoin(ZET), zimstake(ZS) Pool rewards When deciding which mining pool to join, you need to weigh up how each pool shares out its payments and what fees (if any) it deducts. There are many schemes by which pools can divide payments. Most of which concentrate of the amount of ‘shares’ which a miner has submitted to the pool as ‘proof of work’. The most basic version of dividing payments this way is the ‘pay per share’ (PPS) model. Variations on this puts limits on the rate paid per share; for example, equalised shared maximum pay per share (ESMPPS), or shared maximum pay per share (SMPPS). Pools may or may not prioritise payments for how recently miners have submitted shares: for example, recent shared maximum pay per share (RSMPPS). Here is the list of popular Mining Pools for your information :- Reward types & explanation:

CPPSRB - Capped Pay Per Share with Recent Backpay. [1]
DGM - Double Geometric Method. A hybrid between PPLNS and Geometric reward types that enables to operator to absorb some of the variance risk. Operator receives portion of payout on short rounds and returns it on longer rounds to normalize payments. [2]
ESMPPS - Equalized Shared Maximum Pay Per Share. Like SMPPS, but equalizes payments fairly among all those who are owed. [3]
POT - Pay On Target. A high variance PPS variant that pays on the difficulty of work returned to pool rather than the difficulty of work served by pool [4]
PPLNS - Pay Per Last N Shares. Similar to proportional, but instead of looking at the number of shares in the round, instead looks at the last N shares, regardless of round boundaries.
PPLNSG - Pay Per Last N Groups (or shifts). Similar to PPLNS, but shares are grouped into "shifts" which are paid as a whole.
PPS - Pay Per Share. Each submitted share is worth certain amount of BC. Since finding a block requires <current difficulty> shares on average, a PPS method with 0% fee would be 25 BTC divided by <current difficulty>. It is risky for pool operators, hence the fee is highest.
Prop. - Proportional. When block is found, the reward is distributed among all workers proportionally to how much shares each of them has found.
RSMPPS - Recent Shared Maximum Pay Per Share. Like SMPPS, but system aims to prioritize the most recent miners first. [5]
Score - Score based system: a proportional reward, but weighed by time submitted. Each submitted share is worth more in the function of time t since start of current round. For each share score is updated by: score += exp(t/C). This makes later shares worth much more than earlier shares, thus the miner's score quickly diminishes when they stop mining on the pool. Rewards are calculated proportionally to scores (and not to shares). (at slush's pool C=300 seconds, and every hour scores are normalized)
SMPPS - Shared Maximum Pay Per Share. Like Pay Per Share, but never pays more than the pool earns. [6]

Name	Location	TH/s^[1]	Merged Mining^[2]	Reward Type	Transaction fees	PPS Fee	Other Fee	GWK	STM	GBT	Launched	Variance	Forum	Website
50BTC	Germany/USA/Russia		No	PPS or PPLNS	kept by pool	6%^[3]^[4]	1.5%^[3]^[4]	Yes	Yes		2011-11-11	User^[5]	link	link
ABCPool.co	USA		No	PPS^[6]	kept by pool	5%		Yes	No	No	2011-08-02	Diff 1	link	link
alvarez.sfek.kz	Kazakhstan	0.06	No	PPLNS	kept by pool		0%	Yes			2012-04-19	Diff 1	link	link
Bitalo	USA/Europe	1.1	No	PPLNS	shared	0%		Yes	Yes		2014-04-08	Dynamic		link
BitClockers	USA/Europe		NMC	PPS	kept by pool	8%		Yes			2011-05-27	Diff 1	link	link
BitcoinMining.Co	USA		No	kept by pool	kept by pool	2%		Yes			2013-08-13	Diff 1	link	link
BitcoinPool.com	USA		No	Prop.	kept by pool		0%	Yes			2011-03-08	Diff 1	link	link
Slush's pool (mining.bitcoin.cz)	France	677	No	Score	shared		2%		Yes		2010-11-27	User^[5]	link	link
BitMinter	USA/Germany	370	NMC	PPLNSG	shared		1%	Yes	Yes	Yes	2011-06-26	User^[5]/Dynamic	link	link
Blisterpool	USA/Europe	0.4	Devcoin + bonus^[7]	PPLNS	shared		2%	Yes	Yes	Yes	2014-02-01	User^[5]/Dynamic	link	link
BTCPoolman	UK/Europe	0.5	No	Prop.	shared		2%	Yes	Yes	No	2013-03-01	Diff 1	Twitter	Register
BTC Guild	USA/Europe	6600	NMC	PPLNSG	shared		2%	Yes	Yes	No	2011-05-09	User^[5]/Dynamic	link	link
BTC Oxygen	Europe		No	PPS	kept by pool	2%		Yes	Yes		2012-11-01	Diff 1	link	link
BTCMine	USA	0.1	No	Score	kept by pool		0%	Yes			2011-03-11	Diff 1	link	link
BTCDig	USA	7	No	DGM	kept by pool		0%		Yes		2013-07-04	User^[5]/Dynamic 20SPM	link	link
BTCmow	Europe		No	PPLNS	kept by pool		2.5%		Yes		2013-05-31	Diff 1	link	link
btcmp.com	Germany	1.4	No	PPS	kept by pool	4%		Yes			2011-06-28	Diff 1		link
BTCWarp	USA		No	Score	kept by pool		0%	Yes			2011-07-29	Diff 1	link	link
Coin Miners	USA		No	PPLNS	kept by pool		0%		Yes		2014-02-27	Diff 1	link	link
CoinLab Protected Pool	USA		No	PPS	kept by pool	2-5%		Yes			2012-08-09	Diff 1	link
Coinotron	Poland		No	DGM	kept by pool		0%	Yes			2011-07-06	Diff 1	link	link
DeepBit	Germany	0.1	No	PPS/Prop.	kept by pool	10%	3%	Yes			2011-02-26	Diff 1	link	link
Eclipse Mining Consortium	USA/Europe/Australia/Asia	246	No	DGM/PPS	kept by pool	5%	0%	Yes	Yes	Yes	2011-06-14	User^[5]/Dynamic	link	link
Eligius	USA	4000	NMC105% PPS^[8]	CPPSRB	shared	0%		Yes	Yes	Yes	2011-04-27	Dynamic: 32 shares/m	link	link
GHash.IO	Netherlands	7000	NMC, IXC,Devcoin	PPLNS	shared	0%	0%	No	Yes	No	2013-07-01	User^[5]	link	link
Give Me COINS	USA, Europe	25	NMC	PPLNS	shared		0%	No	Yes	Yes	2013-08-12	Dynamic	link	link
MaxBTC	USA		NMC	DGM	kept by pool		0%	Yes			2012-03-15	Diff 1	link	link
Merge Mining Pool	USA	50	NMC, IXC,Devcoin	DGM	shared		1.5%	No	Yes	No	2012-01-08	User^[5]	link	link
Multipool	USA, Europe	40	NMC, IXC,Devcoin	Prop.	shared		0%	Yes	Yes	No	2012-03-15	User	link	link
MuPool	USA/Europe	6	No	PPLNS	shared		0%	Yes	Yes	Yes	2014-02-23	Dynamic	link	link
Ozcoin	USA/Europe/Australia	4	No	DGM/PoT	shared on DGM		1%/2%	No	Yes	No	2011-06-07	User^[5]/Dynamic	link	link
PolishPool	Poland/USA/China	5	NMC IXC DEV	PPLNS/PPS	shared	0%	0%	Yes	Yes	Yes	2013-07-07	User^[5]/Dynamic	link	link
P2Pool	Earth (P2P)	170	Solo^[9]	PPLNS	shared		0%	No^[10]	No^[10]	No	2011-06-17	User^[5]	link
pool.itzod.ru	Russia	38	No	RSMPPS	shared	0%		Yes	Yes	Yes	2011-08-01	User^[5]	RU EN	link
PolMine	Poland	700	NMC	SMPPS	shared	1%	0%	Yes	Yes	Yes	2011-06-13	Dynamic/User	link	link
Triplemining	Europe	7.5	No	PPLNS^[11]	kept by pool		0%	Yes	Yes	Yes	2011-06-28	Diff 1 for getwork/GBT, dynamic for stratum	link	link

Shares are a tricky concept to grasp. Keep two things in mind: firstly, mining is a process of solving cryptographic puzzles; secondly, mining has a difficulty level. When a miner ‘solves a block’ there is a corresponding difficulty level for the solution. Think of it as a measure of quality. If the difficulty rating of the miner’s solution is above the difficulty level of the entire currency, it is added to that currency’s block chain and coins are rewarded. Additionally, a mining pool sets a difficulty level between 1 and the currency’s difficulty. If a miner returns a block which scores a difficulty level between the pool’s difficulty level and the currency’s difficulty level, the block is recorded as a ‘share’. There is no use whatsoever for these share blocks, but they are recorded as proof of work to show that miners are trying to solve blocks. They also indicate how much processing power they are contributing to the pool – the better the hardware, the more shares are generated. The other factor to consider is how much the pool will deduct from your mining payments. Typical values range from 1% to 10%. However, some pools do not deduct anything. Starting to mine with a pool Having decided which currency to mine and which pool you’ll work for, it’s time to get started. You need to create an account on the pool’s website, which is just like signing up for any other web service. Once you have an account, you’ll need to create a ‘worker’. You can create multiple workers for each piece of mining hardware you’ll use. The default settings on most pools are for workers to be assigned a number as their name, and ‘x’ as their password, but you can change these to whatever you like.