Number of contract digital currencies in China
First of all, we need to know what digital currency is. Digital currency is characterized by decentralized transaction currency. The most famous is bitcoin. However, digital currency has not been recognized by China in recent years. Recently, China plans to issue China's digital currency DCEP, or DC for short. Digital currency itself is currency. When you ask how to make money, you are actually asking, How does money make money? In fact, there are many channels. First, we will have funds in the later stage to conct private placement of digital currency. Second, how do we usually earn RMB? Now, when we promote the use of digital currency in China, we will use digital currency to earn money
as a digital currency, in fact, what China issues is similar to legal currency. The purpose of legal currency is to stabilize the RMB, which should float up and down 1:1 per second. According to different exchange rates, DCEP: usdt will float up and down 7:1. In the later stage, it may be 1:1 according to China's increasing competitiveness, which is also graally declining in recent years
as a digital currency, if you want to make money, there are many ways. Major exchanges can convert it into different digital currencies. Other digital currencies may not be as stable as usdt and DCEP, and the price will keep rising and falling according to the demand. At this time, we can buy and sell stocks in a similar way to earn the price difference, If you don't enjoy it, many digital currency exchanges provide contracts, which can buy and sell multiple times, or be bullish or bearish, or even hundreds of times at most. Many people get rich through this way, but there are also many people who lose their property. In addition, this kind of exchange will make your currency return to zero in a way, We should be wary of many such exchanges running away - refer to the second largest exchange checked OK exchange
in addition, as a national form of digital currency, there should be short positions. For example, China's state-owned enterprises carry out digital transformation to form community-based currency, which may be airdropped according to the DCEP they hold. This is my guess
in addition, defi's liquidity mining, commonly known as market making, is more popular now. In the later stage, it may replace the exchange. Everyone is an exchange and can charge a handling fee
The contract transaction of digital currency is not safe. There are still many loopholes in the digital currency trading platform, for example, the most common are the following six kinds:
1. Denial of service attack
denial of service attack is the most important attack against the digital currency trading platform at present. Through denial of service attack, the attacker makes the trading platform unable to access normally, Because users can not accurately distinguish the degree of attack, it often causes panic asset transfer, which brings some loss
2. Phishing incident
even the best technical measures at present can not make the digital currency trading platform avoid phishing attacks. Some hackers and criminals can confuse digital currency investors by means of fake domain names or fake pages, while ordinary investors can't identify the authenticity, so it's easy to cause asset losses
Many digital currency trading platforms use a single private key to protect the hot wallet. If hackers can access a single private key, they can crack the hot wallet related to the private key. For example, in the attack on yapizon of Seoul stock exchange in 2017, the attackers stole hot wallets from the trading platform twice in a year, resulting in a total loss of nearly 50% of the assets of the trading platform and eventually leading to the bankruptcy of the trading platform Fourth, e to the lack of perfect risk isolation measures, or ineffective supervision on the rights of employees, some employees who have the operation rights of the platform use internal trust to seek unjust wealth for themselves. For example, in 2016, the event of employees stealing bitcoin on shapeshift caused a total loss of US $230000 to the trading platform by stealing and reselling sensitive information to others Fifth, the software vulnerability of digital currency trading platform includes single sign on vulnerability, OAuth protocol vulnerability and so on. At present, all countries have laws requiring banks or other financial institutions to implement information security measures to protect customers' deposits. However, e to the fact that the blockchain field is still in its infancy, there is a lack of such specifications for encrypting digital assets. Therefore, it is not accidental that many trading platforms have a large number of loopholes in the absence of security constraints 6. Transaction malleability the technical supporters of blockchain often think that blockchain transactions are highly secure because they are recorded on records that are said to be unchangeable, but each transaction needs to have a corresponding signature, and the records can be forged temporarily before the final confirmation of the transaction 
extended data:
rules of contract transaction
1. Transaction time
contract transaction is 7 * 24 hours transaction, which will be interrupted only ring the settlement or delivery period of 16:00 (UTC + 8) every Friday. In the last 10 minutes before delivery, the contract can only be closed, not opened
Transaction types are divided into two types, opening and closing. Opening and closing positions are divided into two directions: buying and selling:buying open long (bullish) refers to buying a certain number of contracts when users are bullish and bullish on the index. Carry out "buy open more" operation, match success will increase long position
selling pingo (multi order closing) refers to the selling contract that the user makes up for when he is no longer bullish on the future index, offsets with the current buying contract and exits the market. Carry on "sell flat much" operation, match after success, will rece long position
short selling (bearish) refers to the new sale of a certain number of certain contracts when the user is short or bearish on the index. Carry out the operation of "sell short" and increase the short position after successful matching
buy close (short single close) refers to the buy contract that the user will not be bearish on the future index market and make up for, offset with the current sell contract and exit the market. Carry out "buy short" operation, after matching successfully, short position will be reced
3. Order method
limit order: the user needs to specify the price and quantity of the order. Limit order can be used for opening and closing positions
order at opposite price: if you choose to order at opposite price, you can only enter the order quantity, not the order price. The system will read the latest competitor price at the moment of receiving the entrustment (if the user buys, the competitor price is the selling price of 1); If it is a sell, then the counter price is buy 1 price). Issue a price limit order for this counter price
4. Position
the user owns the position after opening and trading, and the positions in the same direction of the same contract will be merged. In a contract account, there can only be 6 positions at most, that is, multiple positions of current week contract, short positions of current week contract, multiple positions of next week contract, short positions of next week contract, multiple positions of quarterly contract and short positions of quarterly contract
5. Order restriction
the platform will restrict the number of single user's positions in a certain period of contract and the number of single open / close positions, so as to prevent users from manipulating the market
when the number of positions or entrustments of users is too large, the platform has the right to require users to take risk control measures, including but not limited to cancellation of orders, closing positions, etc. The platform has the right to adopt measures including but not limited to limiting the total number of positions, limiting the total number of consignments, limiting the opening of positions, withdrawing orders, forcibly closing positions, etc. for risk control
This is a Linux system IP address configuration command. The specific meaning is:
set the IP address of the system to 192.168.0.2; The subnet mask is 24, that is 255.255.255.0; The broadcast address is 192.168.0.255; The name of NIC device is eth0
all computers in the network must set a unique IP address to communicate normally. Because of this unique address, users can select the objects they need from thousands of computers efficiently and conveniently when they operate on networked computers
The IP address is just like our home address. If you want to write to a person, you need to know his or her address so that the postman can deliver the letter. A computer sending information is like a postman. It must know the only "home address" to avoid sending the letter to the wrong person. But our address is expressed in words, the address of the computer is expressed in binary numbers eth0 is the name set by the system for the network card. If there are al network cards or multiple network cards, there will be names like eth1 and eth2. The name can be set artificially. It is the unique name of the network card in the current computer system
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I think this is an investor's mentality, which has two aspects: one is the mentality of holding bitcoin, the other is the mentality of not holding bitcoin
① when you hold bitcoin, if you care about the change of market price, you are often controlled by the makers, neither selling nor buying. Because no matter you buy or sell, you will die in the end. Therefore, you need to change your mind and have a long-term view. It's easier to make profits in the long run. Feng Lun's definition of investment and speculation is based on time. The banker is the controller of speculation, and the retail investors can't play. Therefore, we should make investment and long-term investment, and don't care too much about the rise and fall of the moment. If we are anxious, we will be confused
② if you don't own bitcoin, you should be calm. The rise and fall have nothing to do with you. What's your hurry. Slowly wait for a good time to buy, and then return to the mentality of ①
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it is also possible to use bitcoin to trade on Fuxiang's Binary Options website. The trading rules of bitcoin's binary options are different from other forms of trading. The bitcoin's binary options provided by Fuxiang's binary options trading platform are more "simple" and "rough". What you need to do is to judge the entry point according to the expiration time, as shown in the figure, I believe that the current price still has the opportunity to rise before 04:00 on December 12, so I will buy a 100 dollar call option contract at this price (US $393.91). When it matures, as long as the price is higher than US $393.91, Xiaobian will make 70% profit, that is US $70
The basic operation course of bitcoin binary option is as follows:
③ input the amount you want to invest in the order area, and then click "buy"
to complete the operation of an order. You just need to wait for the expiration, and the order will automatically settle whether it is profitable or not
Different colors of the cream have different effects, according to their own needs to choose
1, ivory white: suitable for some skinned people who need no more skin color correction. They use them to cover defects and pore, and create the effect of nude make-up. Some people, regardless of their skin color, rashly choose ivory white in order to make them look white. In fact, it's a big mistake. In this way, the skin color of their face and body is far from natural. Most of us are not particularly white, so we should be cautious.
2. Light skin color: darker than ivory, more suitable for our Asian skin color. The skin is not black or white, and tends to be popular. Choosing this color is not too wrong
3. Dark skin color: this color is more suitable for the dark beauty, which will make the skin white. Don't choose the color number with your own skin color
Soft pink: it is suitable for people with fair complexion but not good complexion. Soft pink can add color to the skin and make people feel better. People with dark skin should choose carefully, otherwise they will appear black and red5. Purple: purple, which is very popular recently, can neutralize yellow. Girls with dark yellow skin can use it to brighten their skin and make their skin look healthy and bright
6. Green: specifically for reddish skin, covering red blood and pockmarks to make skin look clean and shiny
extended information:
isolation cream is an important item to protect skin. The essence of sunscreen is sun protection. The sunscreen used in isolation cream is the same as that used in sunscreen. It is usually divided into organic sunscreen and physical sunscreen
organic sunscreen and ultraviolet can transform the harmful ultraviolet into harmless; Physical sunscreen agents (titanium dioxide, zinc oxide, etc.) mainly rely on the principle of reflection to block ultraviolet rays
to sum up, black people choose black, white people choose white, close to their skin color, and colorful BB Cream / isolation cream can neutralize and brighten their skin color. The most reliable thing is to have a try at the store counter
The "perfect set of commemorative banknotes" includes ten Hong Kong dollars with a face value of 10 yuan, ten Australian dollars with a face value of 10 yuan, ten new Taiwan dollars with a face value of 100 yuan, and one 50th anniversary banknote with a face value of 50 yuan; A thousand rupiah worth only 0.5 yuan falsely claimed to be worth 300 yuan; The so-called "wrong currency" is actually the fifth set of RMB in the 1999 edition...
according to the Beijing News, in Soho modern city, Dawang Road, Beijing, some cultural companies selling commemorative coins and coins coax the old people to the company by collecting souvenirs for free, and then make them spend tens of thousands of yuan through sales promotion, Buy some cheap commemorative coins and even currency in circulation
Yes, you are right. Even the currency in circulation dares to sell as collection currency. It can be said that the routine of these companies is not clever at all, and even ridiculous, but Rao is so, many old people are cheated. For no other reason, these companies recognize that some old people have money, but they lack knowledge about money
This is obviously against the law. In essence, this is a fraud committed intentionally by taking advantage of the poor discrimination and market information of the elderly, which is suspected to constitute a crime of fraud. According to the criminal law of our country, the crime of fraud refers to the act of defrauding a large amount of public and private property by making up facts or concealing the truth for the purpose of illegal possession. In this regard, it is also necessary to carry out the corresponding special strike, find out and eradicate the relevant instrial chain; And the establishment of effective daily supervision, so that they do not dare to move their minds on the elderly When we were young, our parents were our tutors; Today's elderly parents, in terms of social experience and cognition of new things, often become "children" who need to learn from usin addition, the community, banks and other relevant institutions and departments can also organize some activities to care for the elderly, go deep into the elderly group, and explain the knowledge of prevention of being cheated. In a word, let the old people be "smart" and form a cognitive defense line, so that similar scams will not succeed easily
Bus line: Rail Transit Line 2, about 25.2km long
1. Walk about 1.4km from Hubei hongtongyuan securities investment fund to Huquan station
2. Take Rail Transit Line 2, after 16 stops, to Changgang Road Station
3, walk about 2.1km, to Wuhan Central Hospital
bus line: 618 → 805, about 26.3km long
1 Walk about 210 meters from Hubei hongtongyuan securities investment fund to Kangfu Road Station on chukang road
2, take No. 618, pass 15 stops, reach Dongting station on Zhongbei Road subway
3, take No. 805, pass 16 stops, reach Houhu District Station of gusaoshu Road Central Hospital
4, walk about 160 meters, and reach Wuhan Central Hospital