Is there a time limit for virtual currency contracts
the basis of bitcoin contract
bitcoin contract refers to a contract that can be traded without actually owning bitcoin. It is very different from the currency transaction which can only be carried out with the actual holding of digital currency
bitcoin contracts enable you to predict the price trend of bitcoin and hedge risks. This way of trading means that you are investing in price trends, not the assets themselves
when trading bitcoin contracts, you can decide whether to be short or long. Choosing long means that you expect the price of bitcoin to rise. On the other hand, choosing to short means that you expect prices to fall
leveraged trading
one of the characteristics of bitcoin contracts is that it can choose to trade with high leverage ratio. Using leverage means that you don't have to invest 100% of the transaction amount in a contract transaction. Instead, you only need to deposit the initial margin, which is only a small part of the total contract value
leveraged trading allows you to have a large exposure with a small amount of funds while managing risks
perpetual contracts
although there are many different types of contracts, this paper mainly focuses on perpetual contracts. As the name suggests, these contracts have no expiration date. Traders who are long or short with perpetual contracts can hold positions indefinitely unless the contract bursts, which means that they will not suffer more losses than the initial margin
in the perpetual contract, the pricing of bitcoin is based on a specific index price. The index price is based on the average price of bitcoin in multiple currency markets
bitcoin contract has become a very popular trading tool. Many traditional investors are not ready to allocate their money to digital assets, but still want to benefit from attractive price fluctuations, and contract trading opens the door for them
if you want to open bitcoin contract trading, you need to find the exchange that provides contract trading. AAX platform provides you with bitcoin contract trading services in a compliant and secure environment
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
No. virtual currency with good operation and investment will survive for a long time and will not go bankrupt in a few months, such as bitcoin and internet currency of Internet companies
there are various types of virtual currencies. The virtual currencies with high acceptance abroad are Facebook's f currency, online game second life's Linden currency, etc., while the representative virtual currencies in China are Tencent's Q currency, Sina's u currency, online currency, Shanda Yuanbao, etc
virtual currency is different from check and telegraphic transfer. The value that virtual currency can't realize can't be transferred by bank. At present, it can only circulate in the network world. Virtual currency is released by various network organizations, and there is no unified issuance and management standard
2. The special currency issued by the portal website or instant messaging service provider is used to purchase the services in the website the most widely used is Tencent's q-coin, which can be used to purchase value-added services such as membership and QQ show
3. Virtual currency on the Internet. For example, bitcoin, Wright currency, 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
suspected of financial pyramid selling,
suggest not to participate,
in order to avoid economic losses.
there is no bitcoin futures in China
What are you pulling people to play with
it's just a virtual disk