What is the meaning of the scale of the MCC pool
Publish: 2021-05-12 19:59:59
1. It's one of the baskets with BTC;
2. As the computing level of the whole bitcoin network is rising exponentially, a single device or a small amount of computing power can not get the block reward provided by 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. The website built in this way is called "mining pool"
because the probability of a single miner digging a block is very small, after all, it takes a lot of computing power to dig a block in 10 minutes. Even if there is such a large amount of computing power and the ability to dig, there are many competitors. So it becomes a game of 0 and 1. And the emergence of the mine pool is to break the 0 and 1 play. The computing power of a mine pool is a collection of many miners' computing power, which is far more likely than fighting alone. Every time you dig a block in the mine, you will be rewarded to the indivial according to the percentage of the calculation power of your mining machine in the total calculation power of the mine, and there will be no unfair situation.
because the probability of a single miner digging a block is very small, after all, it takes a lot of computing power to dig a block in 10 minutes. Even if there is such a large amount of computing power and the ability to dig, there are many competitors. So it becomes a game of 0 and 1. And the emergence of the mine pool is to break the 0 and 1 play. The computing power of a mine pool is a collection of many miners' computing power, which is far more likely than fighting alone. Every time you dig a block in the mine, you will be rewarded to the indivial according to the percentage of the calculation power of your mining machine in the total calculation power of the mine, and there will be no unfair situation.
3. If you want to make it scale, you must have a large number of servers. Is it like a mall in the end?
4. The mining machine of bitfish mine is a cluster mining machine with high computing power. The era of CPU mining has long passed, and GPU mining is not the mainstream. Now bitfish mine is an era of ASIC mining and large-scale cluster mining. Looking back on the mining history, bit mining has gone through the following five times: CPU mining, GPU mining, FPGA mining, ASIC mining, large-scale cluster mining, while the mining chips are updated, the mining speed changes are: CPU (20mbash / s), GPU (400mbash / s), FPGA (25ghash / s), ASIC (3.5tash / s), large-scale cluster mining (3.5tash / s * x), At present, bitfish is simulating quantum computing, but it is still a high computing power cluster miner.
5. The first step is to determine the instry category of the special merchants
retail instry, accommodation, catering and leisure and entertainment instry, real estate and finance instry, residential services and business services, wholesale instry, ecation, health Welfare and other government services
Step 2: determine the nature and type of goods or services provided by the main business of the merchant
determine the type and nature of the merchant's business according to the actual main business of the merchant, which should be included in the merchant's business license. It is not allowed to arbitrarily select the business scope listed in the business license, especially the business type with the lowest dection rate, to determine the merchant category code; The main business of the merchant should be taken as the basis for determining the merchant category code
Step 3: confirm that the selected merchant category code best describes the business scope and business nature of the merchant
If a merchant does not have a suitable matching code in the listed category code, the acquiring institution can set the corresponding common code for the merchant. For example: for the maintenance of large household appliances, sports equipment and musical instruments that cannot be accurately described, the acquiring institution can set the instry's common code 7699 - all kinds of maintenance shops and related services, with a dection rate of 0.78%; It is not allowed to apply 5722 large household appliances, with a dection rate of 0.38%
set class code
some merchants carry out mixed operation, that is, they sell a variety of different goods, or provide a variety of services, or provide a package of goods and services to cardholders at the same time
for example, a distributor of electrical and digital procts may provide small-scale related procts and maintenance services to customers at the same time; Hotel merchants also provide gift sales, catering services or other leisure services
(1) when the types of business involved in the mixed operation merchant are not independent from each other and cannot be strictly distinguished, the acquiring institution must set up MCC according to the main business of the mixed operation merchant, that is, the operating revenue is the largest contribution.
retail instry, accommodation, catering and leisure and entertainment instry, real estate and finance instry, residential services and business services, wholesale instry, ecation, health Welfare and other government services
Step 2: determine the nature and type of goods or services provided by the main business of the merchant
determine the type and nature of the merchant's business according to the actual main business of the merchant, which should be included in the merchant's business license. It is not allowed to arbitrarily select the business scope listed in the business license, especially the business type with the lowest dection rate, to determine the merchant category code; The main business of the merchant should be taken as the basis for determining the merchant category code
Step 3: confirm that the selected merchant category code best describes the business scope and business nature of the merchant
If a merchant does not have a suitable matching code in the listed category code, the acquiring institution can set the corresponding common code for the merchant. For example: for the maintenance of large household appliances, sports equipment and musical instruments that cannot be accurately described, the acquiring institution can set the instry's common code 7699 - all kinds of maintenance shops and related services, with a dection rate of 0.78%; It is not allowed to apply 5722 large household appliances, with a dection rate of 0.38%
set class code
some merchants carry out mixed operation, that is, they sell a variety of different goods, or provide a variety of services, or provide a package of goods and services to cardholders at the same time
for example, a distributor of electrical and digital procts may provide small-scale related procts and maintenance services to customers at the same time; Hotel merchants also provide gift sales, catering services or other leisure services
(1) when the types of business involved in the mixed operation merchant are not independent from each other and cannot be strictly distinguished, the acquiring institution must set up MCC according to the main business of the mixed operation merchant, that is, the operating revenue is the largest contribution.
6. What kind of mouse is this? Is it an old mouse? Is your computer system 98? System 98 needs to install USB mouse driver. System XP does not need to install USB mouse driver. There is no command for USB mouse to transfer data.
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