First half of 2017 bitcoin
The total number of bitcoins is 21 million
in 2009, when bitcoin was born, block reward was 50 bitcoins. Ten minutes after its birth, the first 50 bitcoins were generated, and the total amount of money at this time is 50. Then bitcoin grew at a rate of about 50 every 10 minutes. When the total amount reaches 10.5 million (50% of 21 million), the block reward will be halved to 25
when the total amount reaches 15.75 million (5.25 million new output, i.e. 50% of 1050), the block reward will be further halved to 12.5. The monetary system used to have no more than 10.5 million in four years, after which the total number will be permanently limited to about 21 million
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monetary characteristics
1. Decentralization: bitcoin is the first distributed virtual currency, and the whole network is composed of users without a central bank. Decentralization is the guarantee of bitcoin's security and freedom
2. Global circulation: bitcoin can be managed on any computer connected to the Internet. No matter where you are, anyone can dig, buy, sell or collect bitcoin
3. Exclusive ownership: private key is needed to control bitcoin, which can be stored in any storage medium in isolation. No one can get it except the user himself
4. Low transaction cost: bitcoin can be remitted free of charge, but a transaction fee of about 1 bitfen will be charged for each transaction to ensure faster transaction execution
5, no hidden cost: as a means of payment from a to B, bitcoin has no cumbersome limit of quota and proceres. If you know the other party's bitcoin address, you can pay
6. Cross platform mining: users can explore the computing power of different hardware on many platforms
When bitcoin first appeared in 2009, its price was less than 1 cent. One dollar could be converted into 1300 bitcoins, that is to say, seven yuan could be converted into 1300 bitcoins. On May 5, 2017, bitfinex, an overseas digital currency trading platform, quoted a price. Bitcoin once hit US $1700, or about RMB 11737
the concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was officially born on January 3, 2009. According to the idea of Nakamoto, the open source software is designed and released, and the P2P network on it is constructed. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system
unlike all currencies, bitcoin does not rely on specific currency institutions. It is generated by a large number of calculations based on specific algorithms. Bitcoin economy uses the distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses the design of cryptography to ensure the security of all aspects of currency circulation
the decentralized feature and algorithm of P2P can ensure that it is impossible to artificially control the value of bitcoin by mass manufacturing. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity
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transaction method
bitcoin is e-cash similar to e-mail, and both parties need "bitcoin wallet" similar to e-mail and "bitcoin address" similar to e-mail address. Just like sending and receiving e-mail, the remitter pays bitcoin directly to the other party through a computer or smart phone according to the recipient's address. The following table lists some websites that download bitcoin wallets and addresses for free
a bitcoin address is a string of about 33 characters long, consisting of letters and numbers, always starting with 1 or 3, such as & quot& quot; Bitcoin software can generate address automatically, and it doesn't need to exchange information online, so it can be offline. There are a lot of bitcoin addresses available
the bitcoin address and private key appear in pairs, and their relationship is just like the bank card number and password. A bitcoin address is like a bank card number, which is used to record how much bitcoin is stored in the address. You can generate bitcoin address to store bitcoin at will. When each bitcoin address is generated, a corresponding private key of the address will be generated
this private key can prove ownership of the bitcoin at the address. The bitcoin address can be simply understood as the bank card number, and the private key of the address can be understood as the password of the corresponding bank card number. Only when you know the bank password can you use the money on the bank card number. Therefore, please keep the address and private key when using bitcoin wallet
source of reference: network bitcoin
according to the data of coindesk digital currency trading platform, the price of bitcoin once fell below US $6000 in 18 years, which has dropped by 70% compared with the highest value of US $20000 in 2017
"the price movements we are seeing now may seem drastic, but they are quite normal for this market." Etiro's senior market analyst, MATI Greenspan, wrote in an email to CNBC
with the decline of bitcoin, most digital currencies are affected, and other digital currencies are not much better. Most digital currencies are down by more than 10%. But in the long run, the future of digital currency is worth looking forward to.
Bitcoin was founded on January 3, 2009
1 this question is very important. The foreign exchange market is different from the stock market. It has no exchange and is a discrete global trading mode. The essence of the foreign exchange market is the inter-bank market, that is, the market in which the world's major banks trade with each other. Because the trading volume between them is very large, ordinary investors can not participate in it, so there is a platform business. These platform providers build a bridge between retail investors and the interbank market. When retail investors place an order, they are actually trading with the platform business, and the platform business uses the funds of retail investors to trade with the bank. So, it is the platform that provides you with margin service, and the margin will stay on the platform for the time being. As for the economic line you mentioned, it is actually a secondary agent. They are the agents of platform companies, so they charge more commissions
2 your reasoning is a little complicated, so you should try to use the common measurement standards of foreign exchange instry for calculation. Take Europe and the United States as an example, assuming that the exchange rate is 13000, we call one ten thousandth of the exchange rate 1 point. One hand contract is US $100000. Suppose our account is US $10000 and the margin is 1%. Now we buy a first-hand contract with a margin of $1000. At this time, the margin balance is $9000. If the exchange rate drops by one point, our balance will decrease by 10 US dollars. If the exchange rate drops 900 points, the margin balance becomes zero. These changes are reflected in your account, and they are all immediate
in fact, when the margin balance is close to zero, it is generally about 10 points, that is, about $100, the platform will force you to close the position, that is, the so-called burst position. At this point, you have about $1100 left in your account. In actual transactions, margin is used to prevent sudden major changes in the market price, generally will not be used. Therefore, there is no need to worry about platform providers
however, in order to win customers, the mainstream platforms often adopt more radical methods. When the margin balance is zero, they still keep the position of retail investors and start to lose margin. Take the above example as an example, the margin balance begins to turn negative. For every 1 point decline in the market, the margin decreases by $10. When the margin remains about 10 points, that is, about $100, the platform will forcibly close the position. At this time, the account balance is only about $100, which is a complete burst
I think the above answers your third question at the same time
4 if you buy Canada Japan, platform vendors actually need to use US dollars as a bridge to exchange for two times, so the gap between Canada and Japan is the sum of Canada and the United States and Japan, or even larger. However, as a retail investor, you don't have to think too much about it. It's all the work of the platform Shang Dynasty. You just need to know that if you add one day fluctuation point, 0,1 contract fluctuation is 1 / (0.01 * US Japan exchange rate) US dollars
however, it is worth mentioning that the euro / yen exchange rate in the cross section is quite special, because the trading volume is very large, it is often direct trading, and it does not need to be mediated by the US dollar, so the currency spread is relatively small on many platforms
I hope I can help you.