Mining by Internet users
bitcoin is equivalent to digital gold. As a generally recognized equivalent, gold naturally has monetary properties and has been regarded as a kind of currency since ancient times. Bitcoin was born in 2009 and created by a person named Nakamoto. As the earliest digital currency, it was worthless at the beginning of creation. Until 2017, the highest transaction price of bitcoin exceeded 30000 RMB. The reasons why bitcoin became a valuable digital currency are as follows:
first of all, it is like gold, as a natural mineral, The total amount of bitcoin is limited. Bitcoin can not be over issued according to its own algorithm, so there will be no rapid devaluation of currency e to excessive currency issuance. The number of bitcoin is controlled to no more than 21 million e to the algorithm, so it can not be issued in large quantities, so its value is guaranteed
mining Trojan horse is now in the limelight, and its gold sucking power is catching up with blackmail virus. Recently, 360 security guard intercepted a Monroe coin mining Trojan horse spread by "eternal blue". Due to carrying heavy attack ammunition, the Trojan horse spread a large amount, reaching 100000 times a day at the peak, and 360 recently intercepted more than one million attacks
it is understood that this is a large-scale attack of mining Trojan horse carrying "eternal blue" against ordinary Internet users. In order to prevent computers from becoming the coolie of hackers mining, 360 reminds Internet users to ensure that they are well patched and immune to all kinds of attacks using "eternal blue", and at the same time, 360 security guard is opened to comprehensively defend against all kinds of mining Trojan horse
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Mining means that users download software from personal computers and then run specific algorithms to get corresponding bitcoin after communicating with remote servers
bitcoin is a kind of network virtual currency. Internet users can use bitcoin to buy some virtual goods, such as clothes, hats and equipment in online games. Internet users can also use bitcoin to buy real goods
bitcoin mining system is the process of carrying out mathematical operation for bitcoin network through computer hardware, and the miners who provide services can get a reward, because the network reward is calculated according to the tasks completed by the miners, so the competition for mining is very fierce
bitcoin mining started with low-cost hardware such as CPU or GPU, but with the popularity of bitcoin, the mining process has changed greatly. Nowadays, the mining activities are transferred to the field programmable gate array, and the hash speed can be achieved through optimization. The mining efficiency of this mode is very high
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extended materials:
the founder of bitcoin:
on November 1, 2008, a person who called himself Satoshi Nakamoto posted a research statement on a secret cryptography review group, stating his new idea of e-money - bitcoin came out and the first transaction of bitcoin was completed
bitcoin has got rid of the constraints of third-party organizations with the help of Internet, which Nakamoto calls "regional chain". Users are willing to dedicate the computing power of CPU and run a special software to be a "digger", which will form a network to maintain the "regional chain". In the process, they also generate new money
trading is also extended on this network. The computer running this software can solve the problem of irreversible code, which contains several trading data
the first "miner" to deal with the problem will be rewarded with 50 bitcoin, and the relevant trading area will join the chain. As the number of "miners" increases, the difficulty of each puzzle also increases, which keeps the proctivity of bitcoin in each trading area at about 10 minutes
in 2009, Nakamoto designed a digital currency, namely bitcoin. The booming bitcoin market has gone up and down, and the identity of its founder "Nakamoto" has always been a mystery. Rumors about "the father of bitcoin" involve from the US National Security Agency to financial experts, and also give bitcoin a mysterious aura
Mining bitcoin is also called mining. Starting from the essence of bitcoin, the essence of bitcoin is actually a special solution generated by a bunch of complex algorithms. A special solution is one of the infinite (in fact, bitcoin is finite) solutions that can be obtained from the equations. Every particular solution can solve the equation and is unique
in the metaphor of RMB, bitcoin is the serial number of RMB. If you know the serial number of a note, you have the note. The process of mining is to constantly seek the special solution of this equation system through a huge amount of calculation. This equation system is designed to have only 21 million special solutions, so the upper limit of bitcoin is 21 million
bitcoin: also known as "bitcoin", is a kind of network virtual currency. Internet users can use bitcoin to buy some virtual goods, such as clothes, hats, equipment, etc. in online games. Internet users can also use bitcoin to buy real goods
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shortcomings
first, the vulnerability of trading platform. The bitcoin network is robust, but the bitcoin trading platform is fragile. Trading platform is usually a website, which will be attacked by hackers or shut down by competent authorities
Second, the transaction confirmation time is long. When bitcoin wallet is first installed, it will consume a lot of time to download historical transaction data blocks. While bitcoin transaction, in order to confirm the accuracy of data, it will take some time to interact with P2P network, and the transaction will be completed only after the whole network is confirmed Thirdly, the price fluctuates greatly. Due to the intervention of a large number of speculators, the price of bitcoin for cash fluctuates like a roller coaster. Making bitcoin more suitable for speculation rather than anonymous trading Fourthly, the public did not understand the principle, and the traditional financial practitioners resisted. Active netizens understand the principle of P2P network and know that bitcoin has no legal person to manipulate and control. But the public doesn't understand, and many people can't even tell the difference between bitcoin and q-coin“ "No issuer" is the advantage of bitcoin, but in the view of traditional financial practitioners, "no issuer" currency is worthlessIt's not illegal to mine virtual currency on the computer now, but it's illegal to mine by stealing electricity. Virtual currency is defined as a special Internet commodity in China. Internet users can buy and sell it freely at their own risk, but it denies its monetary attribute. Of course, mining does not exist in all virtual currencies. Some currencies do not need mining
although the country banned bitcoin trading last year, this is because some people use these investment channels to launder money. So banning bitcoin is not to say that bitcoin is not approved. And it has nothing to do with bitcoin mining, otherwise bitcoin will not go up. At present, there are thousands of mine owners in the market. It shows that this investment project is still profitable
therefore, we used graphics cards to mine virtual currency at the beginning. After that, someone developed a specific algorithm to make the stream processor of the graphics card greatly strengthen the virtual currency solution, which is the origin of the mining machine
the transmission of knowledge is driven by life
crazy currency speculation attracts more crazy hackers
(for reference picture: "2017 digital cryptocurrency trading platform attacked timeline" or "2017 digital cryptocurrency blackmail virus event timeline")
it is expected that in 2018, criminal activities around digital cryptocurrency will show a high incidence trend . However, users with a small amount of digital cryptocurrency may no longer be the main target of hackers. In 2018, there may be a large number of apt (advanced persistent thread) attacks against groups and users with a large number of digital cryptocurrency
and for ordinary Internet users, hackers are more likely to implant mining Trojan horse in their computers . Vulnerability exploitation, plug-in program, webpage hanging horse, weak password and so on are the main transmission ways of mining Trojan horse. Among them, vulnerability exploitation is an important means for criminals to obtain digital cryptocurrency because of its fast propagation speed and wide influence
How can there be such a good thing? Tens of thousands for nothing?
phase I of Guangzhou Metro Line 6 is 24.5km long, with 22 stations, including seven transfer stations
they are: xunfenggang, Hengsha, Shabei, Hesha, Tanwei (transfer to Guangzhou Metro Line 5), Ruifang, Huangsha (transfer to Guangzhou Metro Line 1), Cultural Park (transfer to Guangzhou Metro Line 8 in the future), Yide Road, Haizhu Square (transfer to Guangzhou Metro Line 2), Beijing Road, tuanyida square, Donghu, Dongshankou (transfer to Guangzhou Metro Line 1), and Quzhuang (transfer to Guangzhou Metro Line 5), Huanghuagang, shaheding, Shahe (not opened), tianpingjia, Yantang (transfer to the north extension of Guangzhou Metro Line 3), Tianhe passenger station (transfer to Guangzhou Metro Line 3), changban
phase II of line 6
a total of 10 stations are opened in phase II of line 6:
botanical garden, Longdong, kemugong, gaotangshi, Huangpi, Jinfeng, Siam Gang, Suyuan (transfer to Guangzhou metro line 21 in the future), Luogang (transfer to Guangzhou Metro Line 7 in the future), Xiangxue
the second phase of line 6 was opened on December 28, 2016. Botanical Garden Station and kemulung station were opened on June 28, 2017.
some software do have such activities for promotion
but it doesn't earn much. It's OK to make money for drinks.