Number of mining machines on sale in China

1.

It is reported that the performance of bm1385 chip is more than twice that of bm1384

The power supply scheme of S7 is similar to that of S5. The S5 + mode of dense chip arrangement is adopted, which makes the arrangement structure more compact. Under the same space, 60 chips are placed in S5 and 162 chips are placed in S7

The price of S7 is 1823 US dollars, equivalent to 11650 RMB yuan, and the delivery time is from September 21 to September 30. At the same time, the official announced the parameters of ant mining machine S7. The chip adopts bm1385, a 28nm fully customized chip independently developed by bitcontinental, with a computing power of 4.86t and a power consumption of 1201w. Ant miner S7 is the best miner with the best power consumption ratio so far, and the power per T is about 250W

official website is not open for sale at the moment. Users of early adopters can place their orders in overseas official website. The delivery address is 17% of the Chinese mainland tax and the purchase price is 13630 yuan. p>

ant mining machine S7 specification parameters:

1. rated calculation force: 4.86 Th / S ± 5%

2. wall power consumption: 1210 watts (bit mainland apw3-1600 watt power supply, 93% AC / DC efficiency, 25 ℃ ambient temperature)

3. power efficiency: 0.25 Joule / GH (wall, 93% AC / DC efficiency, 25 ℃) ° C)

4. rated voltage: 12V ± 5%, which should not be lower than 12.0V

5. number of single power board chips: 162x bm1385

6. overall dimension: 301 mm (L) * 123 mm (W) * 155 mm (H)

7. cooling: 2 × 12038 fan

8. working temperature: 0 ℃ to 40 ℃

9. network connection: Ethernet

< / OL >

for details, please see "ant S7 miner start pre sale"

2. Hello, the popular mining machines are ant mining machine and Avalon mining machine. Go to the official website to buy them. In the current bitcoin market, it's not worthwhile to mine the current bitcoin price. If the profit is very low, you may not be able to recover the capital. Now, in addition to electricity charges, the number of indivial investors mining is graally decreasing. The trend of mining centralization is more obvious. The best time to dig has been missed. This can take a look at bitcoin home network related introction.

3.

At the end of March this year, bitmainland launched an ant miner X3 based on ASIC, which is mainly aimed at Monroe coin (XmR) and cryptonight algorithm dependent cryptocurrency. Monroe coin immediately issued a counter statement that it will change the core algorithm to fight against the invasion of ASIC computing power

what would be the result if it appeared in the world of digital cryptocurrency? That is, the wrong calculation results may be brought into the whole network without being discovered

More importantly, if a "calculator manufacturer" monopolizes the calculator market, it can also deliberately proce this kind of calculator with errors to change the mathematical rules

after all, the "calculation" in the field of crypto digital currency is not as simple as 1 + 2 + 3. You can't compare paper currency with special currency by hand

the practical significance of computing power monopoly in mainland China

we have learned about attacks based on 51% computing power in various articles

but the reality is that although the global power of 78% was in Chinese mainland, fortunately, they were scattered in different pools and controlled by different people. p>

although all POW based cryptocurrencies have the risk of being attacked by 51%, few people can really launch attacks e to the dispersion of computing power

but what if the miners themselves don't want to attack, but the mining machinery manufacturers attack

still using the analogy just now, although each miner subjectively wants to do the problem checking independently, their calculator is manipulated remotely and gives consistent wrong answers. This may pose a great threat to digital cryptocurrency

however, the manufacturer with the absolute voice of mining machinery had such a problem in mainland China

in April 2017, the back door of antbled came out. Although this is described as a "vulnerability" in Chinese, antbled is more like a function that has been implemented and designed

anonymous people found that after an ant miner made by bitmainland was connected to the network, it would communicate with a domain name held by bitmainland on a regular basis and return the miner's serial number, MAC address and IP address to bitmainland's server. If the server of bitcontinent gives a negative signal, the miner will stop running

although bitcontinental responded that they could not shut down any mining machines that did not belong to them. However, the bitcoin core team has proved in experiments that this function has no verification. Anyone can shut down mining machines by forging DNS - but it also means that bitcoin mainland has the ability to shut down any sold mining machines

After

, bitcontinent fixed this "loophole", but it caused heated discussion in the community. This has also set the tone that almost all pow blockchain communities are biased against mainland China

a few months later, under the leadership of bitcontinent, viabtc g out the first block and made a hard bifurcation with the blockchain of bitcoin. From then on, bitcoin BCH (bitcoin cash) appeared in the world

will the monopoly of mining machinery destroy the distributed system

facing this problem, we should have a clear answer now. That is, the monopoly of mining machinery will certainly affect the safe operation of pow digital cryptocurrency

the problem is not whether bitcontinental and its founder Wu Jihan are trustworthy, but that one of the values of any blockchain system is to operate safely without trust in any single company or indivial

even if the ASIC miner is not monopolized by bitmainland, the ASIC miner itself will increase the concentration of computing power

the ASIC used for mining has great requirements for ventilation, power and site, and has no use except for mining. At the same time, the calculation difficulty of the whole network is increased e to the powerful computing power

as a result, it is very difficult for external players to start mining in the next software on the computer as they did five years ago. And the recent centralized exchange is caused by frequent black incidents, which also proves that concentration in this unregulated market will definitely lead to insecurity

assuming that the bitcoin network runs on top of one million miners, no one can shut it down. And if the bitcoin network runs on 20 large mines, it's much easier to shut it down

and by the end of 2017, 78% of the effort was concentrated in mainland China, which led to a real possibility of Chinese mainland regulators' launching a deadly attack against the special currency. p>

moreover, most of the scenarios of using digital cryptocurrency are related to "decentralization". Once centralized, it means that these scenarios no longer exist. It turns a project that might have value into a pure waste of computing power

Then, what measures should we take in the face of this situation

first of all, as the project side, it may be time to give up the pure POW mechanism. In fact, in many projects of issuing cryptocurrency, especially in asset securitization projects. Similar to the concept of stock in the real world, POS itself is more reasonable than pow

in the media that don't know about blockchain, we often hear such words as "bitcoin wastes a lot of computing power and has no value", which is reasonable to some extent. It is difficult for a POW based blockchain to bind the value of the project itself to the issued digital cryptocurrency - because the real value behind the price of the currency does not come from the project, but from the cost of maintaining computing power

and the hybrid mode of pow + POS is more like the future. In the hybrid mode, both coin holders and miners can participate in the major decisions of this community. If a decision is widely accepted, the blockchain will be soft forked to the latest state without excessive intervention of developers, and there will be almost no private resistance of miners or mining machines

secondly, as a retail miner, if you are still digging a pure POW mechanism currency, you should unconditionally support the bifurcation activities initiated by the community to resist the ASIC mining machine, even if it will lead to the failure of your mining machine

this may sound contradictory, but in the long run, it is better to promote the reform of the community and get more benefits in a currency controlled by the monopoly of computing power. Because in many conflicts between computing power and community in the past, the ultimate result is that the computing power owner will forcibly keep the old algorithm to hard fork the blockchain

just like Eth and etc, the classic Ethereum (etc), which belongs to the computing power master, has lost the support of developers and become an air coin with no vitality and impossible to develop applications

as a retail leek, you should be careful to trade the non mainstream digital currencies (except bitcoin) supported by bitmainland mining machinery, so as to avoid falling into a blockchain in which bitmainland controls the computing power completely

finally, if you are bitcontinent, what should you do

bitcontinent's goal is to become Intel, AMD and NVIDIA, make greater contributions to the whole computer instry, and become a great company, not just entangled in the immediate interests of mining

Wall Street financiers have long seen through the violence brought about by NVIDIA's video card mining. The rise and fall of the company's stock price has been consistent with the price of bitcoin, and even affected by the digital currency market. Citron, a well-known short seller, has recently been bearish on NVIDIA, arguing that the company has focused too much on providing services for digital currency miners rather than on serious businesses such as artificial intelligence, games and driverless driving

the mission of chip manufacturers is to provide more powerful chips to drive more intelligent services, and finally contribute to the real world, rather than become monopoly tycoons in the virtual world. When we no longer enter the gate of the virtual world, the only thing left is a deserted land

in an interview with US media last year, Wu Jihan disclosed that he would make an IPO with a market value of billions of dollars. As a company about to go public, bitmainland should not only be responsible to investors, but also accept investors' questions about the sustainability of its business. "If your mining machinery goes public, it will encounter a fork, what should you do?"

and this question, which needs to be asked after the listing, has already appeared: the current price of the split coin xmo after the Monroe team split is $7.50, while the current price of the real Monroe coin XmR is $194, and the split coin is completely abandoned by the Monroe community

before bitcontinent becomes the name of all blockchain communities, we can rely on the huge amount of capital accumulated in recent years to transform into an artificial intelligence chip company along the previous plan, rather than continue to develop a variety of digital currency mining machines to extract the last drop of oil before the ecological collapse

content source: phoenix.com

4. The ant S9 proced by bitmainland is the most mainstream mining machine on the market, which is famous for its low power consumption and high output. Ant mining machine S9 adopts TSMC's 16 nanometer FinFET process. TSMC comes from the agent factory of iPhone chip, and ant also applies the full custom design scheme on S9. So, this makes S9 have super computing power upgrade, let mining efficiency is higher. S9 adopts the latest generation chip bm1387 (189 chips in total), and the computing power of a single chip reaches 74gh / S. in terms of power consumption, S9 maintains at 0.08w/gh/s. (the power consumption is 0.08w/gh/s at 0.4V core voltage, and the power consumption per T computing power wall is only 100W, which is only 2.4 kwh per day. Rated calculation force: 13.5th/s ± 5%

Xuebao miner A1, miner chip is the core of miner. It is said that bitmine is the source of the whole bitcoin miner instry. Bitmine has its own powerful chip technology as early as the end of 2013. Of course, it also benefits from the joint cooperation and efforts of bitmine and other companies, and Xuebao miner is their own proct. A1 is the world's first customized mining machine, equipped with ASIC chip (bf16btc), the number of chips is as high as 576pcs, the computing power of a single chip is 84.1gh/s, and the overall computing power is as high as 49th / s ± 5%

Z4 adopts Intel al core [email protected] Cup, mining power is 265mh / S (ETH), equipped with independent graphics card 570x8, has 9 fans, and the radiator adopts Intel original radiator, power supply: station flag 2000W power supply, voltage: 12.4-12.6v.

5. Now is the stage of upgrading mining machinery and recing bitcoin proction. It's always right to buy the most advanced mining machinery
bitmainland's ant mining machine has always been a good brand among mining machines. You can buy their latest mining machine. Of course, if the premium is too high, don't buy it. It is suggested to buy directly from the government.

6. Although it is not in line with the national regulations, Q coin is valuable as a virtual property, and valuable things can be expressed by price, unless RMB is not used as a currency to measure the price in the future, or it must be able to measure or express those valuable things, but now it has not been recognized by everyone. Moreover, the reason why the country does not recognize it for the time being is that the country has no experience and does not understand the situation. However, as young people born in the 1980s, they all know that these things are valuable because they bring us psychological or physical pleasure or comfort

7. The main reason is that our country has strict control over foreign exchange
there is another way to solve the problem of not recharging the PayPal account to the US dollar. It is through finding a person to exchange PayPal dollars (using RMB in a certain proportion of exchange), the other party pays the US dollar through your PayPal account to your PayPal account, and you send the remittance through Alipay or domestic bank to the right side, so as to solve the problem of recharging the PayPal account to the US dollar. At present, only local banks in the United States can recharge the PayPal account in US dollars (for example, the Bank of America account you applied for in Shanghai can't be recharged in PayPal), and the PayPal account can't be recharged in RMB.
friendly reminder: you need to find a reliable payer in this way. At present, PayPal certification supports a variety of international credit cards. Certification is very simple. It is recommended that you apply for an international credit card of China Merchants Bank, and you can pay directly through the credit card when shopping.
the work of PayPal consultants is not only to guide customers to register, but also to maintain their accounts in the later stage, for example, customers can't receive the money they call you, If you can't withdraw cash from your bank account or some people have problems with limited accounts, you can ask PayPal customers to help you solve them. Even PayPal consultants will teach you some tips on how to use PayPal, how to use PayPal to save handling charges, and risk control knowledge. If you use it for the first time, do you need a consultant?

8. Hello, about the digital currency platform, I suggest you use WeChat or Alipay to pay, these two digital currency payment platform are quite reliable.

9. How to mobilize the enthusiasm of service center staff belongs to the category of management incentive theory, which can be implemented according to the following six steps< First, practice the premise and principle of motivating employees. Incentive theory reveals that the premise of effective incentive is to find out the actual needs of each employee, the expectation and value for the future, and the evaluation of the current situation of fairness
2. If you want to motivate others, motivate yourself first; Require employees to strive for excellence, leaders must first have the determination and confidence to strive for excellence. In this way, leaders can infect and inspire everyone with an invisible personality charm
3. Fair. Justice is fair and reasonable. It requires leaders to treat their employees equally, and not to be intimate with them. Whether leaders are fair or not has a fundamental impact on the enthusiasm of employees
4. Trust. Lack of trust in an organization can be fatal in the end. The trust in any kind of incentive measures depends on leaders' trust in their subordinates and subordinates' trust in leaders. Trust is both sides, the trust of the unit will not last long. In an environment of mutual trust, every employee will become an important worker
5. The dialectical principle of material incentive and spiritual incentive. From the incentive theory of management science, we can see that material incentive is the foundation and spiritual incentive is the key. In the current economic situation of our country, the demand for health care has been basically solved, and the incentive measures are more and more important. At the same time, we should not ignore the fair theory about incentive measures. Leaders should pay attention to the fairness of material interests and spiritual treatment, otherwise it will affect the enthusiasm of employees
6. The principle of comprehensive application. There is no superior or inferior between any two kinds of incentive measures, only whether to adjust measures to local conditions. The actual process of incentive cannot be fully realized by one method. In a certain period of time, there is often the maximization of the effect of some incentive measures, but it does not exclude or do not need other incentive measures. Therefore, to effectively mobilize the enthusiasm of employees, we must comprehensively use various incentive measures to overcome the singleness.

10. Bitmainland has not invested in any currency
extended reading:
bitmainland is a Chinese IC design company, established in early 2013, focusing on the research, development and sales of bitcoin mining chips and mining machines

strive to further promote the decentralization process of bitcoin through mining machines with more cost-effective advantages, so as to provide more convenience and benefits for miners all over the world
bitcontinent is a high-tech company composed of integrated circuit technology team, bitcoin experts, venture capital experts and entrepreneurs. With years of experience in the field of integrated circuits, the founding technical team has successfully designed and mass proced a number of chips in the field of digital signal processing, including bitcoin mining chips, to provide customers with competitive customized hardware solutions.