Encyclopedia of virtual currency

1.

1、 Different definitions:

1. virtual currency:

virtual currency refers to non real currency

digital currency:

digital currency is an alternative currency in the form of electronic currency. Both digital gold coin and cryptocurrency belong to digiccy

3. Cryptocurrency:

cryptocurrency is a kind of transaction medium that uses cryptography principles to ensure transaction security and control the creation of transaction units

4. Token (token):

a kind of article whose shape and size are similar to currency, but the scope of use is limited and has no currency effect, and its token is the homonym of token in English

Second, the characteristics are different:

1; It can also be said that virtual currency is personalized currency. In another way, it can also be called information currency

2. Digital currency:

is an unregulated and digital currency, which is usually issued and managed by developers and accepted and used by members of specific virtual communities

Cryptocurrency:

cryptocurrency is based on the decentralized consensus mechanism, which is opposite to the banking and financial system relying on the centralized regulatory system

4. Token (token):

usually needs to be exchanged for money, used in shops, playgrounds, mass transportation and other places, as a voucher to use services and exchange goods

extended data

at present, digital currency is more like an investment proct, because it lacks a strong guarantee agency to maintain its price stability, and its role as a value measure has not yet appeared, so it can not be used as a means of payment. As an investment proct, digital currency cannot develop without trading platform, operating company and investment company

digital currency is a double-edged sword. On the one hand, the blockchain technology it relies on has been decentralized and can be used in other fields except digital currency, which is one of the reasons why bitcoin is popular; On the other hand, if digital currency is widely used by the public as a kind of currency, it will have a huge impact on the effectiveness of monetary policy, financial infrastructure, financial market and financial stability

2.

Internet currency of Internet company, QQ currency of Tencent company, q-point, voucher of Shanda company, micro currency launched by Sina (used for micro games, Sina reading, etc.), chivalrous Yuanbao (used for chivalrous road game), and silver pattern (used for bixue Qingtian game)

network virtual currency can be roughly divided into:

the first category is familiar game currency. In the era of stand-alone games, the protagonist accumulates money by knocking down the enemy, entering the gambling house to win money, and using these to buy Herbs and equipment, but it can only be used in his own game console. At that time, there was no "market" between players. Since the establishment of Internet portal and community, the realization of game networking, virtual currency has a "financial market", players can trade game currency

the second type is the special currency issued by the portal website or instant messaging service provider, which is used to purchase the services in the website. The most widely used is Tencent's q-coin, which can be used to purchase membership, QQ show and other value-added services

the third kind of virtual currency on the Internet, such as bitcoin (BTC), Wright currency (LTC), etc. bitcoin is an electronic currency proced by open-source P2P software. Some people also translate bitcoin as "bitcoin", which is a kind of network virtual currency. It is mainly used for Internet financial investment, and can also be directly used in daily life as a new currency

extended materials

strict law enforcement:

(23) enterprises engaging in online game virtual currency issuance and trading services without permission shall be investigated and dealt with by cultural administrative departments at or above the provincial level in accordance with the Interim Provisions on Internet culture management

(24) for the online game virtual currency issuing and trading service enterprises that violate the requirements of this circular, the cultural administrative department and the competent commercial department shall notify them to rectify within a time limit. Those who fail to rectify within the time limit shall be investigated and dealt with by relevant departments according to law

(25) establish a coordination mechanism for the management of virtual currency in online games, and intensify the crackdown on illegal activities such as "number theft", "private service", "plug-in", illegal profits, money laundering, etc. All departments should regularly communicate, coordinate and cooperate with each other, timely report the relevant situation, and do a good job in the management of online game virtual currency within their respective responsibilities

(26) the online game virtual currency issued by the online game operation enterprise shall not coincide with the name of the props in the game. The administrative provisions for props in online games shall be formulated separately by the cultural administrative department of the State Council in conjunction with relevant departments

source: Internet virtual currency

3.

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

< UL >

< EM >
< / EM >

4.

China does not have the first legal virtual currency. At the end of 2013, the central bank and other five ministries and commissions issued the bitcoin risk notice, which clearly defined bitcoin as a special Internet commodity, and the public can buy and sell it freely on the premise of taking their own risks

other digital confidential currencies are also suitable, such as Laite coin, the ancestor of Shanzhai coin, Fuyuan coin for business points in jewelry instry, dog coin for small reward, etc. But although virtual currency exists legally in our country, it is illegal to cheat under the guise of virtual currency

extended data

as the proct of e-commerce, virtual currency has begun to play an increasingly important role, and it is more and more connected with the real world. However, with the growth of virtual currency, the relevant laws and regulations are lagging behind, which has laid many hidden dangers

fraud

the private transactions of online virtual currency have realized the two-way circulation between virtual currency and RMB to a certain extent. The activity of these traders is to buy all kinds of virtual currencies and procts at a low price, and then sell them at a high price to earn profits. With the increase of such transactions, there are even virtual mints

in addition to the virtual currency provided by the main company, there are also some people who specialize in "virtual coin making" to obtain virtual currency by playing games and then resell it to other players. Take Wenzhou as an example, there are about seven or eight such "virtual mints" with four or five hundred practitioners. This not only creates a bubble for the price of the virtual currency itself, but also causes trouble for the normal sale of the issuing company. It also provides a platform for selling and collecting money and money laundering for various cyber crimes. p>

impact system

in modern financial system, the issuers of money are generally central banks, which are responsible for the management and supervision of money operation. As the equivalent exchange goods used to replace the real currency circulation on the Internet, the virtual currency on the Internet is essentially the same as the real currency. The difference is that the issuers are no longer central banks, but Internet companies

if the development of virtual currency makes it form a unified market, each company can exchange with each other, or virtual currency is integrated and unified, and all of them are based on the same standard and price, then in a sense, virtual currency is currency, which is likely to form a threat impact on the traditional financial system or economic operation

network problems

in addition to direct cash, virtual currency can also be purchased by SMS, internet transfer and fixed telephone recharge. These ways of purchase not only provide convenience for users, but also have many risks

such as embezzlement of telephone recharge and purchase by minors. In addition, virtual currency does not have the anti-counterfeiting technology of real currency. Computer hackers may use its security loopholes to proce counterfeit currency. Relevant personnel of the State Administration for Instry and Commerce said that virtual currency transaction is a business behavior derived from the Internet era, and there are no clear legal provisions to regulate it, and there are no items related to virtual goods transaction in the scope of instrial and commercial registration

but when the virtual property transaction graally employs people, places are fixed, transaction profits are clear, and has the nature of operation, it may involve market order and tax issues. Even game operators have no ability to control. There are a large number of "counterfeit banknote makers" in the network. Take the winger who is mainly engaged in chess and card online games as an example, the purchasing power of his online currency has shrunk by nearly 40% in one year. Many people point out that such inflation will only damage netizens and make them lose confidence in the Internet

reference source : network virtual currency

5. In the middle of this month, with the strengthening of the supervision of ICO and bitcoin, bitcoin China, fire coin, okcoin and other virtual currency trading platforms successively announced that they would stop all virtual currency trading business at the end of September and October
in recent years, the price of bitcoin has risen rapidly, which has led to the rise of a number of virtual currencies, and then triggered a large number of people to follow suit. In the market, there is a saying that "it is better to speculate in stocks than in real estate"
however, the explosion of bitcoin has also caused great controversy. J. P. Morgan CEO Jamie; Jamie Dimon snapped bitcoin in the middle of this month, calling it "a fraud.". Recently, Mike Novogratz, a legendary fund manager who has sung many digital currencies, said, "bitcoin will be the biggest bubble in our life." The following is the full text of bitcoin China announcement:
bitcoin China will close the digital assets and RMB recharge function at 12:00 noon on September 27, Beijing time
the ensuing ban on bitcoin mining is natural.

6. Yes, and the flow rate is also OK

7. If there are no miners mining, the total amount of tokens will not increase, and there is no impact on the tokens already in circulation. As long as the currency is still in normal circulation, theoretically, the value of a single token will increase. Many currencies originally have a total amount limit, not unlimited output, which is the basis to ensure that it will not have inflation problems. For example, the upper limit of bitcoin is 21 million. When all 21 million bitcoins are g out one day, the miners will have nothing to dig, won't they

8. Naturally, the total computing power of five computers is 1000g. I don't think it's necessary to elaborate on this principle at all. If you combine it with the principle of computer operation, it will come to light naturally. However, it's better not to play with bitcoin at this time. Any new thing launched is that people who eat crabs first take advantage of it, and those who come later will have a good look at it. If you want to just play, if I don't say that you want to make money, it's not very interesting.

9. Forget it, now it's almost impossible to find out with software. It's recommended to buy professional mining machine or buy bitcoin directly in a professional exchange, and recommend haobtc platform