Early delivery of digital currency contract

1. Cash delivery, there is no physical delivery of the digital asset index, using cash netting method for delivery

2. 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.

3.

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

4. Enterprise cloud service is to provide cloud service for enterprises. The business model of cloud service is to provide a wealth of personalized procts by breeding a large number of start-ups to meet the growing personalized demand in the market. Its breeding mode is to provide a whole set of services for start-ups, such as financing, promotion, payment, logistics and customer service, and let the external use of its operation capacity as water and electricity. To understand cloud services, we must first understand the basic principles of cloud computing. Cloud Computing: by distributing computing on a large number of distributed computers instead of local computers or remote servers, the operation of enterprise data center will be more similar to that of Internet. This enables enterprises to switch resources to the applications they need, and access computers and storage systems according to their needs. This type of service is to mobilize all kinds of resources in the network to serve users For example, Yimai cloud launched a permanent activity for enterprises to purchase cloud servers at 0 yuan. Unity is strength
this kind of service will be the mainstream in the future. Cloud services allow users to store and read data through the Internet. Through the proliferation of a large number of start-ups, they provide a wealth of personalized procts to meet the growing demand for personalized services in the market. Its breeding mode is to provide a whole set of services for start-ups, such as financing, promotion, payment, logistics and customer service, and let the external use of its operation capacity as water and electricity. This is the business model of cloud services.

5. Brief introction: Registration No.: * * * location: Chongqing registered capital: RMB 1 million legal representative: Zhang Lin enterprise type: limited liability company registration status: existing registration authority: Jiulongpo District branch of Chongqing Administration for Instry and Commerce registered address: No. 30-5, building 1, No. 99, Kuangji village, Jiulongpo District, Chongqing legal representative: Zhang Lin establishment time: March 20, 2014
note Registered capital: RMB 1 million
Business Registration No.: 500107000501333
enterprise type: limited liability company
Company Address: No. 30-5, building 1, No. 99, Kuangji village, Jiulongpo District, Chongqing

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. The DC / DC mole is a DC-DC transformer. The so-called isolation and non isolation refer to whether a transformer is added after rectification and filtering.
the one with transformer is isolation, and the one without transformer is non isolation. Generally, the power supply is isolated,
the safety of isolation is higher, and the requirements of isolated devices are lower for design, Because the isolated power is sent to the power mole after the transformer step-down, the non isolated power is directly sent to the power mole through the 220 V, and the current power chips are isolated

8. In a transaction, a short machine can be converted into a short one at a time. I hope I can.

9. Stop pulling
there is no bitcoin futures in China
What are you pulling people to play with
it's just a virtual disk

10. At any time,
whether it is a delivery contract or a perpetual contract