Will those who dig bitcoin at the same time share equally
The most advanced bitcoin mining machine, one to two years to dig out a bitcoin, bitcoin mining is now too difficult. If you want to dig, you can dig ether currency. Now it is steadily appreciating every day. According to the current development trend, it will be able to recover its capital in about seven months, and then it will be profitable< br />
1、 Mining principle
at the beginning, we could dig bitcoin with the computer CPU. The founder of bitcoin, Nakamoto Tsung, g out the world's first creation block with his computer CPU. However, the era of CPU mining has long passed, and now bitcoin mining is the era of ASIC mining and large-scale cluster mining
looking back on the mining history, bitcoin mining has gone through the following five times: CPU mining → GPU mining → FPGA mining → ASIC mining → large-scale cluster mining, The mining speed changes are as follows:
CPU (20mhash / s) → GPU (400mhash / s) → FPGA (25ghash / s) → ASIC (3.5tash / s) → large scale cluster mining (3.5tash / s * x)
mining speed, which is called computing power in professional terms, that is, the ability of computer to generate hash collisions per second. In other words, how many hash collisions can our miner do per second is the calculation force. Computing power is the ability to dig bitcoin. The higher the computing power, the more bitcoin you dig, the higher the return
in the world of bitcoin, a data block is recorded about every 10 minutes. All mining computers are trying to package the data block and submit it, and the person who successfully generates the data block will get a bitcoin reward. Initially, bitcoin rewards of 50 bitcoins could be generated about every 10 minutes. But the payment is halved every four years, and now the bitcoin network can generate 25 bitcoins every 10 minutes
to successfully generate data blocks, miners need to find the effective hash value. To get the correct hash value, there is no shortcut. You can only guess. The process of guessing is the process of computer random hash collision. If you guess correctly, you will get bitcoin
Mining method: from a miner to a large-scale mine, you need to prepare a miner, a computer that can connect to the Internet, an AUC, a raspberry pie, power supply and all kinds of connecting lines, etc. The connection order of various devices is network cable - & gt; Raspberry pie - & gt; Microusb cable - & gt; AUC-> 4Pin cable - & gt; Mining machine and power supply 
< EM > Figure 3: Mine Map (scale of tens of thousands of mining machines) < / EM >
nowadays, the profit space of small and medium-sized absenteeism who take one mining machine home or deploy a small family workshop (dozens of mining machines) is very limited, and the mining instry is graally concentrating on enterprises and teams with low-cost power resources and professional deployment ability
there are many factors that affect the mining revenue, such as the performance and power consumption of mining machinery, the computing power and difficulty of the whole network, the deployment and operation and maintenance capacity of the mine, the availability of low-cost electricity resources, and the currency price and policy guidance, etc. At present, excellent mining enterprises have the ability of chip research and development, a lot of computing power, professional mine deployment and operation experience, etc. in the future, resources and computing power will be more and more concentrated in these mining enterprises
2. Mine pool
in addition to the above equipment, you also need a necessary tool - mine pool. The function of the mine pool is to gather a large amount of mineral computing power, increase your probability of getting bitcoin, and at the same time, distribute your future bitcoin income to your account in advance
the simple explanation is as follows: now the bitcoin network generates a block every 10 minutes, which contains 25 bitcoins. Suppose there are 1W people in the world participating in mining, then in these 10 minutes, only one lucky person has taken these 25 bitcoins, and the others have nothing. The principle of the mine pool is that everyone mines in teams and distributes according to the agreed distribution method, so that the income of the miners' bitcoin tends to be stable and the risks of the miners are reced. Let's take the most common PPS allocation method as an example. Suppose that your computing power is 10t, and the computing power of the whole mine pool is 100t. Your computing power accounts for 1 / 10 of the total computing power of the mine pool. Suppose that the mine pool can generate 10 bitcoins a day, then you can get 1 bitcoin a day
3. Cloud computing power
in reality, the supply of mining machines often exceeds the demand, and at the same time, the delivery of mining machines needs a long waiting period. Miner installation, commissioning, maintenance and other processes are very complex, which requires a lot of energy. Miners have to enre the noise and heat of miner. For miners, the biggest cost is not these, but the high electricity charges consumed by mining. The profit space of small and medium-sized miners is getting smaller and smaller, even negative
Mining income and risk mining income can be calculated by the following formula:Mining income = generated bitcoin * currency price - mining machinery cost - electricity fee - custody fee
if you are just a small miner, generally you only need to dect mining machinery cost and electricity fee
Mining risks are as follows:
< UL >at present, the number of bitcoin is less than 4.5 million. If we do not issue additional bitcoin, the price of bitcoin will fluctuate, and the price callback will lead to the extension of the payback cycle
mining difficulty improvement at present, our machines can meet the market demand
the risk of power outage
< EM >
< / EM >
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it is estimated that 21 million pieces will be excavated in 2140
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according to the relevant literature of bitcoin, in 2140, 2100 bitcoins will be proced and will not grow any more. According to the principle of bitcoin, after 33 halving periods, the mining output of each block will reach 0.58 Cong, less than the minimum unit of one Cong. The interval of each half rection is 210000 blocks, and the total proction time (2140 years) given in the above literature is calculated from the proction time of each block of 10 minutes 210000 * 10 / 60 / 24 / 365 = 3.9954 * 33 = 132 years. Since 2008, 132 years later, it is 2140 years)
however, the "proction time of each block is 10 minutes" used in the above calculation method is an ideal state, which is only true when the computing power and difficulty of the whole network do not change. Looking at the bitcoin blockchain, it is not difficult to find that bitcoin's whole network computing power has been growing for a long time, and the difficulty of mining has also increased. Therefore, it is not difficult to find out that the above calculation is not tenable and there is a huge error
the shortcomings of the above methods are that they can not accurately predict the change of bitcoin network computing power and the mining speed of bitcoin. The 11.3-day data used in the above calculation method is only the average value from May 2013 to April 5, 2014, and the representativeness is questionable. We can integrate the results of big data analysis and mining machine proction to establish a more accurate mathematical model
and it's not necessarily 25 coins every 10 minutes. The generation speed will be slower and slower, until 21 million bitcoins are g out, there will be no new coins. When the time comes, the miners can only make money from the service charges voluntarily paid by some people.
On the front of the coin are printed "people's Bank of China", "1 yuan", Chinese phonetic alphabet "Yiyuan" and "2004" year number; The pattern on the back is children and the Chinese Zodiac elements, and "Jiashen" is printed below
in order to welcome the arrival of Jiashen year of the lunar calendar, the people's Bank of China announced on January 6, 2004 to issue a set of commemorative coins to celebrate the new year of the monkey. The front of the coin consists of Chinese and English characters of "1 yuan" and the year number of "people's Bank of China" and "2004" above the inner edge. On the back of it is a picture of a little boy wearing traditional Chinese clothes flying a "Kite" happily. Now the market price is about tens of yuan
Why do you want to go up? What's the logic
not to mention how many years after the excavation, no one should have g this thing for a long time
take your time
is bitcoin a currency? No, money needs to be liquid, so it needs to be actively over issued to eliminate inflation. Bitcoin can't, so it's not money. It's just because money can't rise so much. Have you ever heard that money can ride a roller coaster? There is no such thing
at best, it can only be collectibles, such as gold, silver, jewelry, ancient books, calligraphy and paintings. You can accept them if you like, and sell them for money if you don't want them
so why is this thing going up so crazy now? In fact, it's just hype
you need to analyze the mentality of the holder, except those who really have faith, the rest are not waiting for it to give you money. Do you want money or bitcoin? Of course, it's money, or I won't ask if it will go up
everyone is bidding up its value. It's a tacit thing to get money after shipping. When you don't ship, you only have a market value, not money. So in essence, you have to ship. After shipping, you can "pursue a better life"
will bitcoin keep rising? This actually doesn't exist, you don't sell bitcoin? You don't know? Don't you want a better life? You will meet your real needs more or less by discounting when you are still young and energetic. The money I earn is for use, and bitcoin does not create value. Then the money I want to use is yours. It's so simple. To put it bluntly, the longer the time, the greater the desire for discounting, even at a stable high level, This kind of pressure still exists. With this pressure, the rise will be limited, and the decline is the manifestation of pressure accumulation
here we need to introce something that we haven't mentioned before, which is the circulation disk. In fact, the proportion of bitcoin circulation disk is not high. Why such a large market value of things can rise and fall more quickly is actually the problem of circulation disk. That is to say, only a small part of the circulation disk is supported by money, and most of the non circulation is actually false value
you can now switch back to the topic
when the total amount of something that can be hyped is exhausted, that is to say, you have lost the way to obtain it at no cost or low cost. Then you have to hold it through trading, and it is not a necessity of your life, and you do not have to hold it. Maybe the price is already at a high level, and the rise and fall of the market will not be very crazy, If you want a big return, you have to buy a large amount of money. The cost you hold is very large. The cost means that the risk is high, and ordinary people can't afford to play. Please note that the original purpose of money is to fight small for big. How much investment enthusiasm is there at this time
because it has completely presented its own value, that is, the so-called generation currency, and obviously it has not achieved the expected goal, such as the idea of decentralization, which is impossible to realize. If it is realized, you will not care how much it is worth, whether it will rise or not, but only how much you hold, and its value logic will collapse
at this time, we can see whether it has collection value. It is no longer proced, but it is a pity that it is not a complete collection. It has neither scarcity nor the most basic aesthetic feeling. It has no artistry, craftsmanship and so on. Its quantity is very large. Do you think degradable garbage bags have collection value? Even if this kind of garbage bag is no longer proced, it is still not
to sum up, 1. There is no cheap way to get it; 2. The price is already very high, the profit space is small, and the cost is high; 3. The value logic has collapsed, and it is not a token; 4. Even as a collection, it doesn't mean much. What are these rules destroying? It is confidence
do you still want to hold such a thing? It's normal that there are things to hold, things to come out and things to go in. But as I said before, there is a time pressure there. Money has to be used. Holding needs to be discounted
at this time, we have to talk about the circulation market. If the circulation market is not big enough, it is a dead hole. Theoretically speaking, if the value logic can not be realized, we should sell as a normal investor. We consider that most of the circulation market are normal investors, so it is inevitable that the sales volume of circulation market is larger than the purchase volume, As long as the money coming out is greater than the money going in, it can be seen that the market value is falling, and it is obvious that the shrinkage of the market value is several times of the actual outflow, because those that are not in circulation are nominal prices, and those that do not exist will disappear as soon as they fall
and this decline is continuous, if it worsens into panic selling, it will be irreversible
that's my point of view. Of course, I don't think it's possible to wait until the last coin is g out. At present, there are obvious signs of a decline in investment confidence. If you are a rational investor, whether you will hold bitcoin for a long time, most of the answers are whether or not you will buy on the cheap, and most of the answers are wait-and-see, which shows the problem, At the end of the day, bitcoin is about confidence