Currency held by bitmainland 2019
Unfortunately, bitcoin is no longer tradable in mainland China. Bitcoin China announced that it will stop all trading business on September 30, 2017
development information:
after bitcoin China and microbit, the bitcoin trading platforms in Shanghai and Shenzhen, respectively announced that they would close their trading business on September 30, 2017, on the evening of September 15, two other large domestic bitcoin trading platforms, Huo coin.com and okcoin.com, headquartered in Beijing, announced that they would suspend their registration from 21:30 on September 15, 2017 RMB recharge business; All users will be informed before September 30 that they are about to stop trading, and the trading business of all digital assets against RMB will be graally stopped before October 31
according to worldcoindex data, since September 1, bitcoin has dropped from $4800 to $3655, a drop of 24%, and its market value has shrunk by nearly $20 billion
in the same period, the decline of ether currency and Wright currency was 37.5% and 31% respectively. Over the past two weeks, Leyte currency has declined by more than 40% on the three major domestic trading platforms
it is reported that in the special rectification work of the risk of non bank payment institutions, the central bank has severely cracked down on unlicensed institutions, rectified illegal trading venues, and "micro disk" transaction payment and settlement business, blocking the channels of illegal fund-raising; For the virtual currency trading places such as ICO and bitcoin, which are suspected of illegal fund-raising and securities activities, the central bank will timely issue an announcement with relevant departments to clarify the attitude, warn of risks, and deploy various regions to carry out rectification
the central bank said that in the next step, it will continue to do a good job in six aspects in accordance with the opinions of the State Council on further prevention and disposal of illegal fund-raising. First, it will cooperate with the Ministry of justice to promote the promulgation of the regulations on the disposal of illegal fund-raising and the regulations on non deposit lending organizations. Second, closely monitor the operation of private lending interest rates, guide the rationalization of private lending interest rates, uses and ways of borrowing, and rece the living space of illegal fund-raising activities. Third, continue to rely on the anti money laundering system to monitor illegal fund-raising. Fourth, we will continue to prevent and resolve Internet financial risks together with relevant member units of the leading group for special rectification of Internet financial risks. Fifthly, we should strengthen the construction of social credit system, build a joint incentive system for keeping promise and a joint punishment system for breaking promise, and create an honest and trustworthy credit environment. Sixth, continue to do a good job in protecting the rights and interests of financial consumers
according to the statistics of the joint conference office, there were 5052 new suspected cases of illegal fund-raising in 2017, involving 179.55 billion yuan, a year-on-year decrease of 2.8% and 28.5%. However, the total number of cases is still at a high level, the number of people involved in fund-raising continues to rise, cross provincial cases continue to occur frequently, and major cases involving many provinces and even the whole country still occur from time to time, and the overall situation is still grim.
The concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's idea, open source software was designed and released, and P2P network was built on it
bitcoin is a kind of universal encrypted electronic currency in the world, and it is completely autonomous by users. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system
bitcoin can be cashed and converted into the currency of most countries. Users can use bitcoin to buy some virtual items, such as clothes, hats and equipment in online games. As long as someone accepts it, they can also use bitcoin to buy real-life items
Although the price of bitcoin has suffered a sharp drop before the Spring Festival, there are still some people who are obsessed with "mining". Therefore, mining equipment has become a hot spot, and some people have made a fortune
analysts from Bernstein, a well-known US investment bank, estimate that in 2017, the operating profit of a Chinese start-up company named bitmain in China may reach US $3 billion (about RMB 19 billion) to US $4 billion (about RMB 25.3 billion), which is equivalent to that of chip giant NVIDIA
However, it took bitmainland only four years to achieve such a high profit in one year, while NVIDIA spent 24 yearsbitmainland's operating profit may exceed US $3 billion
according to the conservative expectations of 75% gross profit margin and 65% operating profit margin, bitmainland's operating profit in 2017 is US $3 billion to US $4 billion, while NVIDIA's operating profit in the same period is US $3 billion. In a report released on Wednesday, Bernstein analysts said it took bitmainland only four years to achieve this goal, while NVIDIA took 24 years
According to Bernstein's report, each of the antminer bitcoin mining devices currently sold by bitmainland is worth hundreds to thousands of dollars. In addition, the company operates "mining pools" that allow participants to collaborate on bitcoin mining to rece costs. Bernstein estimates that bitmainland has 70% to 80% market share in bitcoin miners and ASICs 
according to the daily economic news, the ethash algorithm currently used by Ethernet is based on the demand of graphics chip, which is suitable for PC mining, and the mining machine is not good at it. The market expects that bitmainland will soon launch a new mining machine with low energy consumption and high efficiency. A professional mining machine can be equivalent to several 8-graphics card mining machines. After the official launch, it is bound to impact the original PC mining market with graphics chips. At that time, because of "mining" and soaring chip prices are also expected to return to rationality
Mitch Steves, an analyst at RBC Capital, believes that the price of Ethernet currency has skyrocketed from $10 in early 2017 to $1000 now, and the possibility of exclusive mining chips is much higher than a year ago. Steves also pointed out that if bitmainland really sells chips dedicated to Ethernet coins, the mining efficiency will be far better than that of graphics chips, and at that time, it will take away the business of NVIDIA and AMD
according to the daily economic news, NVIDIA's financial report for the fourth quarter of 2017 released in early February found that the company's data center, including the sales of graphics processing units (GPU and graphics card), had an operating revenue of US $606 million in the fourth quarter, making it the second largest revenue source of NVIDIA. The chief financial officer of NVIDIA also mentioned that in terms of the overall demand for NVIDIA procts, the contribution of digital money market is difficult to quantify, but I believe the percentage contribution in the fourth quarter is higher than that in the previous quarter
No illegal
in the bitcoin risk notice jointly issued by the people's Bank of China and other five ministries and commissions at the end of 2013, bitcoin is clearly defined as a special Internet commodity, and people can buy and sell it freely at their own risk. But it denies the monetary nature of bitcoin< The Article 143 of the general provisions of the civil law stipulates that "the civil legal act with the following conditions is valid:
(1) the actor has the corresponding capacity for civil conct< (2) the expression of intention is true< (3) it does not violate the mandatory provisions of laws and administrative regulations, public order and good customs. " The announcement of the seven ministries and commissions is neither a law nor an administrative regulation, and can not be used as a legal basis for judging whether a civil juristic act is valid or not; The law does not go back to the past. Therefore, the bitcoin transaction has legal effect, and the bitcoin obtained from the transaction is protected by law. Therefore, legal disputes arising from trading activities, including civil or criminal cases, should be subject to jurisdiction. Courts or public security organs can not refuse to accept bitcoin because they think bitcoin is not protected by law
extended information:
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transaction mode
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 does not need to exchange information online when generating address, so it can be offline [2]. More than 2 bitcoin addresses are available. Figuratively speaking, there are about two grains of sand in the world. If there is an earth in each grain of sand, then the total number of bitcoin addresses far exceeds the number of all the sand on all these "earths"
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 records how much bitcoin you have on it. You can generate bitcoin address at will to store bitcoin. When each bitcoin address is generated, a corresponding private key of the address will be generated. This private key proves that you have ownership of the bitcoin at that address. We can simply understand the bitcoin address as the bank card number, and the private key of the address 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 your address and private key when using bitcoin wallet
after the transaction data of bitcoin is packaged into a "data block" or "block", the transaction is initially confirmed. When a block is linked to a previous block, the transaction is further confirmed. After six block confirmations in a row, the transaction was irreversibly confirmed. Bitcoin P2P stores all transaction history in a "blockchain.". The blockchain continues to extend, and once new blocks are added to the blockchain, they will not be removed. Blockchain is actually a distributed database composed of a group of scattered client nodes and all participants, which is a record of all bitcoin transaction history. Nakamoto predicts that when the amount of data increases, users hope that not all the data will be stored in their own nodes. In order to achieve this goal, he uses the hash function mechanism. In this way, the client will be able to automatically eliminate those parts that it will never use, such as some very early bitcoin transactions
factor 1: bitcoin's spot trading volume rose
the decline on March 13 caused BTC to drop from US $8000 to US $3600 within 24 hours, and the buying volume of coinbase, Kraken, binance, bitfinex and other spot exchanges surged
at the same time, open positions (used to describe the total number of long and short positions opened at a specific time) fell sharply in mainstream futures exchanges (including bitmex, binance futures and okex)
the sharp decline of open position and the obvious increase of spot purchase volume of futures exchange actually lead to the transformation of the market. The spot market began to control the price of bitcoin, rather than the futures market
the futures market usually causes sharp fluctuations in the price of bitcoin, because traders use leverage (borrowed funds) to trade cryptocurrency, while in the spot market, investors buy and sell bitcoin without borrowing funds
this change has stabilized the market, enabled the price of bitcoin to rebound without a significant correction, and the volatility is relatively low
factor 2: BTC should not have fallen below $4000 at the beginning
on March 31, coinbase published a blog post, describing in detail the market trend after bitcoin plummeted to $3600
the exchange said that most users of the platform bought bitcoin after a sudden decline, adding that the waterfall clearing led to a much lower decline in bitcoin on the futures exchange than on the spot exchange
coinbase explained: "waterfall clearing is the most prominent in bitmex, which provides highly leveraged procts. During the sell-off period, bitcoin trading price on bitmex was much lower than other exchanges. Until bitmex was maintained at the time of the highest volatility (based on DDoS attacks), waterfall clearing was suspended and prices rebounded rapidly. When the st settles, bitcoin hovers around $5000, before plummeting below $4000. "
this opens up a theory that bitcoin should not have fallen to $3000 in the first place, which explains why bitcoin rebounded rapidly to $7350 in a V-shape
factor 3: rapid recovery to key support level
since the beginning of 2018, the level of $5800 has been an important support area in history. Avoid bitcoin prices falling between $3000 and $4000, except in December 2018
bitcoin prices quickly recovered from the $3000 range to $5800 in seven days. After three tests in March, the price of $5800 became a strong bottom, allowing bitcoin to continue its rally.
1. They hype themselves and pave the way for their bifurcating bitcoin. For example, Liao Xiang, who once strongly opposed big blocks, paid big money, and they all bifurcated bitcoin
2. Misled by the core development team, the melon eaters regard the miners as a group of criminals
3. The core development group's opposition to BCH is not only a divergence of development roadmap, but also a dispute of interests. The lightning network promoted by the core development group can make the gold owners behind it profit through the lightning network.
because this process is similar to the gold mining process in real life, it is called "mining".