1. < UL >
this is mainly e to the 51% attack, because before some of the world's well-known mines, e to the low rate and convenient use, many miners went to those large mines to mine. As a result, the computing power of the mines soared, approaching or even exceeding 51% of the global computing power many times
bitcoin community has also raised a big discussion about 51% attack for many times,. The mine pool operators also called on the miners to move to other mines in a responsible manner, and finally 51% of the attacks were solved. Many of China's miners have moved to fish ponds
most of the new miners have joined the fish pond because they don't know about the global mine ponds, and many of the previous mines have died e to poor management
2. Mine pool refers to:
as the computing level of the whole bitcoin network continues to rise exponentially, a single device or a small amount of computing power can not get the block reward provided by the bitcoin network on the bitcoin network
after the computing power of the whole network has been improved to a certain extent, the low probability of getting rewards has prompted some geeks on "bitcoin talk" to develop a method that can combine a small amount of computing power and operate jointly, and the website established in this way is called "mine pool"
extended data:
the existence of the mine pool reces the difficulty of bitcoin and other virtual digital currency mining, reces the mining threshold, and truly realizes the bitcoin mining concept that everyone can participate in
but its disadvantages are also very obvious, because computing power is connected to the mine pool. As a mine pool, it will have huge computing power resources. In the bitcoin world, computing power represents the bookkeeping right, and computing power is everything. If the computing power of a single mine pool reaches more than 50%, it will be easy to launch 51% attacks against virtual digital currencies such as bitcoin, The consequences are very terrible:
the mine pool can make the mine pool with 49% of the remaining computing power have no harvest, instantly quit the competition and go bankrupt. The mine pool's computing power exceeds 50%. If 51% attack is launched, it will easily occupy all the effective computing power of the whole network
3. This is the pool share in the past three months:

4. According to the official website of coin'an mining pool, BTC's calculation power has reached 1.75e, 36053 effective miners, ranking 11th at present, OK's calculation power is 6.89e, and Huo's calculation power is 4.75e. At present, there is still a big gap in the coin'an mining pool. However, as a bystander, you should have a unique vision. Looking at the ups and downs of the previous coin circle, the development and launch of various new technologies, although coin an is late, it can always make the latecomer rank first. It probably doesn't take long for this ranking to change.
5. Choose projects with high return rate and short return cycle
6. Fish pond f2pool is the earliest mine pond in China. It was closed for a period of time e to poor management, probably in July last year, but it was opened again soon. They are not only mining pools, but also mining machines. Shenyu mining machine failed because of the chip problem. In 2015, we set up a Wright coin miner and crowdfunding
there has been no major safety accident in the fishpond f2pool. In addition, 51% of the problems often occur in large foreign mines, which also gives the fishpond f2pool opportunities for rapid development. They are all people in the circle, and they also work as information websites and have a wide range of contacts.
7. After a period of time, only 1% of the water is pumped by Aiminer ring its operation, and there is no stealing calculation power. If other people recommend your water free software, you should be careful. If you really don't pump water, you will steal the calculation power! There's no free lunch in the world. You'll lose a lot if you take advantage of it. If it is found that the computing power of the mining software is too different from that of the
ore pool. Generally e to the network reasons, or the existence of stolen computing power in the mine pool, whether it is fish pool or spark, there will be stealing 5-10% of the computing power. You can also check whether you dig with WiFi, which will cause frequent packet loss.
8. Bitfish mine adopts PPS mode: pay per share mode, which pays for each share immediately. The expenditure comes from the existing bitcoin funds in the mine pool, so it can be withdrawn immediately without waiting for the block generation or confirmation. In this way, the operation behind the scenes of the pool operators can be avoided. This approach reces the risk to the miners, but transfers the risk to the pool operators. Operators can charge fees to make up for the possible losses caused by these risks. In order to solve the problem that PPLNs sometimes has a high profit and sometimes has no profit, PPS adopts a new algorithm. PPS estimates the daily available mineral resources of the mine pool according to the proportion of your computing power in the mine pool, and gives you basically fixed income every day.
9. Computing power will fall, but if the technology is relatively stable, most of the miners with qualified operation and maintenance ability will recover within the specified time after occasional loss of computing power, so as to avoid huge punishment. If a large number of confiscated pledged currencies are not recovered within the specified time, it means that the technology of the manufacturer is not only unstable, but also the operation and maintenance ability is extremely poor. We have to choose carefully.