Contract transaction digital currency

1. 1. digital currency contract, also known as futures contract. In short, it's business in the future. A standardized contract uniformly formulated by the exchange to deliver a certain quantity and quality at a specific time and place in the future. The vast majority of users use the margin system of futures contracts, add 10 or even 20 times leverage to leverage big funds, and then use the index fluctuation to buy low and sell high trading contracts, so as to earn double profits< 2. Perpetual contracts are derivatives. From the perspective of trading, it is similar to the traditional futures contract, but there are some differences. First of all, it has no maturity or settlement date. The perpetual swap contract is similar to a margin spot market, so its trading price is close to the underlying reference index price, which is different from the futures contract. Due to the basis, the trading price difference of the futures contract may be significantly different. Secondly, the main mechanism of anchoring spot price is capital cost< At present, rolling spot futures is the main form of perpetual contracts. Rolling contract is a kind of futures contract settled on the same day and automatically extended. Profit and loss are settled on each trading day, and the contract position held by traders will be automatically extended at the end of the trading day. In addition, the cash flow of assets will be exchanged, and the long investors will pay the capital cost to the short investors to compensate the capital cost of the short investors
3. Option contract is a kind of agreement, which can give traders the right to buy or sell assets at a predetermined price before a specific date or on a specific date. Option contracts are trading derivatives that can be based on a wide range of underlying assets, including stocks and cryptocurrencies. These contracts may also come from information such as financial indicators. Generally, option contracts are used to hedge the risk of existing positions and speculative transactions.

2. At present, there are not many platforms that only do contract trading. We haven't seen any professional statistics on the ranking. The longest one is okex. Now, the currencies are relatively complete. International platforms include ioaex and domestic platforms include oktop.

3. Hello, digital currency contract, also known as futures contract. In short, it's business in the future. For example, the 58coin exchange has formulated a standardized contract that stipulates the delivery of a certain quantity and quality at a specific time and place in the future. The vast majority of users use the margin system of futures contracts, add 10 or even 20 times leverage to leverage big funds, and then use the index fluctuation to buy low and sell high trading contracts, so as to earn double profits.

4.

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

5. Digital currency contract, also known as futures contract. In short, it means doing business in the future. Celletf provides such transactions.

6. Chongqing jinwowo analysis and research: blockchain is based on the Internet, but its function is wider than the Internet. The main similarities of the two technologies are
:
(1) in terms of data transmission mode, the Internet and blockchain do not need centralized intermediary
(2) both technologies require users to access the Internet
(3) both technologies can meet the needs of multiple users in an organization.

7.

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 red

5. 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

8. 1. The more mining machines there are, the more difficult it is and the less money it can dig
2. Mining money should be converted into legal money to pay employees. If you dig more and sell more, no one will buy, the price will drop sharply, and the income will be quite unstable
3. Why don't they make computers? Why not make a mobile phone? All kinds of intelligent hardware are so popular, why don't they do it? Only when we put ourselves in the right position can we achieve long-term development. If you only see the immediate interests and go to mine, it is likely to collapse tomorrow.

9. Contract trading is a kind of financial derivatives of digital currency. Users can make profits by judging the direction of rise and fall and choosing to buy long or short contracts. It's a very powerful trading platform.