Bitcoin in July
It was officially born on January 3, 2009
since 2015, the future of bitcoin has become more and more uncertain. On the one hand, bitcoin fell as much as 55.55% against RMB last year; In 2015, bitcoin fell by more than 30% against the RMB in the first half of January alone
bitcoin's "falling" reflects the "self-healing" of its value after "fanaticism" to a certain extent. According to statistics, in 2013, bitcoin rose from 1 ∶ 13.59 to 1 ∶ 731, with an annual increase of 5300%. This speculative driven inflation has affected the virtual currency property on which bitcoin relies
on the one hand, no country has defined it as a legal currency. On the other hand, in 2014, the US dollar rose significantly, and the prices of oil and bulk commodities fell correspondingly. The price trend of bitcoin is the same as that of the latter, becoming part of the asset allocation of some speculators, which highlights that its asset attribute is far greater than the monetary attribute
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Security and credit risk have also become the reasons for the decline of investor confidence. Mt. GOx, once the world's largest bitcoin exchange, claimed in March last year that it had lost all its assets e to hacker attacks. Recently, it was revealed that its lost bitcoin was probably e to internal system manipulation
the regulatory environment of bitcoin is not optimistic, and Russia, Thailand and other countries have begun to implement strict control on it. In addition, the global stock market performed well last year, resulting in the diversion of bitcoin investment funds, and the crazy "mining" activities also rapidly increased the supply of bitcoin, which may lead to a trend of oversupply in the short term, leading to a sharp drop in the price of bitcoin
on January 3, 2009, Nakamoto g up the first batch of 50 bitcoins on a small server in Helsinki, Finland
on May 21, 2010, the first bitcoin transaction: Laszlo hanyecz, a Florida programmer, bought a $25 pizza coupon with 10000 BTC
on July 16, 2010, the price of BTC rose by US $0.08 from US $0.008. The first sharp price fluctuation shows the rise of new things
on July 17, 2010, the first bitcoin platform was established
on November 6, 2010, the price on mtgox reached $0.5, and the bitcoin economy reached $1 million
on December 7, 2010, the first portable device to portable device transaction was realized on Nokia 900, with a transaction volume of 0.42btc
on February 9, 2011, the price reached US $1 for the first time, which is equivalent to US $1. The news that BTC is equivalent to us dollar has been widely reported by the media, which has aroused people's great attention, and the number of new users has increased greatly. In the next two months, bitcoin and pound sterling, Brazilian currency, Polish currency exchange trading platform has opened
on March 18, 2011, the BTC / USD exchange rate hit a seven week low, falling to US $0.7
on August 20, 2011, the first bitcoin conference and World Expo were held in New York. Among Google trend counties, bitcoin's attention reached a new high, with a price of $11 at that time
on November 14, 2011, the price of bitcoin hit a new half year low of $1.99
on September 15, 2012, the bitcoin conference was held in London. At this time, the price of bitcoin was $11.8
on September 27, 2012, bitcoin fund was founded, and the price of bitcoin was $12.46
on November 25, 2012, the first bitcoin conference in Europe was held in Prague, Czech Republic. At this time, the price of bitcoin was $12.6
on February 19, 2013, bitcoin client v8.0 was released. At this time, the price of bitcoin was $28.66
on April 10, 2013, BTC set a record high price of $110
on May 9, 2013, BTC Chinese, the largest bitcoin reporting website www.sosobtc.com The company obtained the investment fund Union Square's US $5 million round a investment, and the price of bitcoin was US $112.09 at this time< On May 28, 2013, the Department of Homeland Security banned the virtual currency service of Liberty Reserve, a Costa Rican exchange company, for its suspected xiqian and unlicensed fund transfer business, U.S. prosecutors said that this will become the largest international xiqian lawsuit in history, with the scale of absorbing money reaching 6 billion US dollars. A large number of users, including China, will lose all their money. At this time, the price of bitcoin is 128 US dollars
in June 2013, Netcom said that the United States will withdraw from qe3, deflationary bitcoin and quantitative easing monetary policy, which are the relationship between the two
on June 27, 2013, the German Conference made a decision: holding bitcoin for more than one year will be tax-free, which is considered by the instry to recognize the legal status of bitcoin. At this time, the price of bitcoin is $102.24
on June 28, 2013, mtgox obtained the monetary service license issued by the financial crime enforcement network office of the U.S. Department of the Treasury. Transaction standardization may mean that bitcoin is on the right track, government risk is reced, and its pace of integration into the display economy will be accelerated. At the same time, it will play an exemplary role in other virtual currencies. At this time, the price of bitcoin is $97.99
on November 28, 2013, the bitcoin trading price of Mt. GOx, a popular bitcoin exchange, broke through $1000, reaching a record high of $1073
on November 29, 2013, the trading price of bitcoin on Mt. GOx, a popular exchange, hit a record high of US $1242, while the price of gold was US $1241.98 an ounce, surpassing that of gold for the first time.
Bitcoin is a kind of network virtual currency. Bitcoin network generates new bitcoin through "mining". In essence, the so-called "mining" is to use computers to solve a complex mathematical problem to ensure the consistency of bitcoin network distributed accounting system. Assuming that the mining computing power is 100 mhash / s and the total computing power is 4000 ghash / s per day, 3600 bitcoins can be g out every 24 hours
China's computing power has accounted for more than 75% of the world, that is to say, 75% of bitcoin in the world is made in China. How long does it take to dig a bitcoin
bitcoin used to be very good at "digging", which can be done by ordinary computer CPU, and it can automatically "solve problems" by downloading software. But with the rise of currency price, more and more people want to "solve the problem", and the difficulty of mining is also increasing. Now, the amount of computation needed to dig a bitcoin is beyond the reach of ordinary people. Ordinary computers can't afford it
instry insiders said that in 2014, 100 bitcoins were generated from 500000 yuan of electricity charge per day, and the cost of electricity charge alone was 5000 yuan per coin. But now, the same cost has more than doubled, and the electricity cost of each bitcoin is as high as 10000 yuan
in the generation mechanism of bitcoin, mining reward is decreasing. At the beginning of the birth of bitcoin, the miners could get 50 bitcoins for each page of the ledger, and then 25 bitcoins for each page of the ledger, decreasing in turn. It's like digging gold. At first, it's more and less. The time point at which each new reward is reced by half is called half bitcoin proction
assuming that the mining computing power is 100 mhash / s, the total computing power is 4000 ghash / s per day in 2014, and 3600 bitcoins are g out every 24 hours
now, we can understand the difficulty of bitcoin digging in this way, which is equivalent to 100 million dice throwing numbers less than 100 million and 50 million. Whoever throws them first will get the bookkeeping right. At this point, 1050 million is a hash value. The process of throwing dice is called hash collision. The unit of mining power is the number of hash collisions per second
at present, the computing power of bitcoin in the whole network has reached 2.36 billion hash collisions per second, which is equivalent to the number of water droplets in more than 200000 50 meter long standard swimming pools. But even with such a large amount of computing power, it will take about 10 minutes to hit a hash value that meets the requirements
in 2012, bitcoin's output was halved for the first time, and in July 2016, bitcoin's output was halved for the second time. At present, 12.5 bitcoins are awarded for recording one page of account book. The next halving will take place around 2020, and the total number of bitcoins will not increase by 2040, with a total of 21 million
Related videos: how long does it take to dig a bitcoin
Ethereum will open at $225.03 on July 22, 2019.
Bitcoin network generates a new block every ten minutes. Every time a miner completes a block, he can get a certain amount of bitcoin as a block reward, and the reward will be halved for every 210000 blocks mined. Because the time for mining each block is limited to 10 minutes, at this rate, the period for the reward to be halved is four years, that is to say, the reward for bitcoin blocks is halved every four years
when the bitcoin block reward was halved for the first time, its price rose 25 times from 300 yuan to 7995 yuan; In the second half, the price rose 28 times from 5011 yuan to 140000 yuan. So many people predict that the third halving of bitcoin in May 2020 will lead to a sharp rise in the price of bitcoin, at least 10 times. However, these figures are not so clear. After halving in 2012, bitcoin prices rose for two months, and in 2016, there was almost no immediate response to deflation for a month. This may also be the result of the strategy of "buying rumors and selling news" implemented by some speculators
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after bitcoin halved, the supply slowed down, and keeping deflation through algorithm has always been a part of bitcoin protocol design. It was set up to ensure the value of bitcoin. By recing block incentives and setting the maximum possible supply of bitcoin at 21 million bitcoins, bitcoin has an anti inflation feature, which runs counter to the tendency of central banks to print money at will. At present, there are about 17.5 million bitcoins in circulation, and less than 3.5 million bitcoins are available for mining. When the next block award halves, bitcoin's annual inflation rate will drop from the current 3.8% to about 1.8%
maintaining deflation through algorithms has always been a part of the design of bitcoin protocol. It was created to guarantee the value of bitcoin. By recing block incentives and keeping the total amount of bitcoin at 21 million bitcoins, bitcoin is endowed with an anti inflation nature, which is different from the tendency of central banks to print money at will. At present, there are about 17.5 million bitcoins in circulation and less than 3.5 million available for mining. The next block award cut in half could rece bitcoin's annual inflation rate from the current 3.8% to about 1.8%. This will be the first time in bitcoin's history that it has fallen below the historical average of about 2% - 3% growth in gold supply
block head: record the characteristic value of the current block
block body: actual data
what currency is the most popular this year? I believe many people will answer: "bitcoin"
generally speaking, bitcoin is a kind of digital code, which is generated by a large number of calculations according to a specific algorithm. In theory, everyone can get bitcoin through calculation, which is compared to "gold digging" and "mining". According to the algorithm set by the founder of bitcoin, the total amount of bitcoin is limited, with only 21 million bitcoins. At present, 12.07 million bitcoins have been "g out"< However, it is not easy to dig out bitcoin. Lin Jia, a student of the school of economics and management of Beijing University of Posts and telecommunications, once made a special research. She said: "the performance of ordinary home computers is difficult to support the computing needed to" dig "bitcoin. There are special bitcoin" mining machines "on the market, and a high configuration one costs several hundred thousand yuan‘ Bitcoin is not only a high investment cost, but also a high technical threshold. The algorithm is very complex, so it is difficult for ordinary people to "dig" bitcoin by themselves. "
in fact, most people still buy bitcoin in cash. Bitcoin can not only be bought, it can also be sold. In some countries, bitcoin is even regarded as legal currency, which can be converted into real money and used directly for shopping. In China, some businesses announced that they would accept bitcoin payment<
if investors become the last stroke of drumming, they will only get a bunch of useless electronic symbols
recently, the central bank, MIIT, CBRC, CSRC and CIRC jointly issued the notice on prevention of bitcoin risk The notice stressed that bitcoin should be a specific virtual commodity, which does not have the same legal status as currency and cannot and should not be used as currency in the market. All financial institutions and Payment institutions shall not carry out business related to bitcoin
although a notice broke people's illusion of bitcoin becoming a currency in circulation, bitcoin still has a lot of fans. On December 16, the 24-hour trading volume of a bitcoin trading platform named okcoin in China alone reached 66225 bitcoins, with a trading volume of more than 300 million yuan
Why are people still so keen on investing in bitcoin? One of the important reasons is that many people think that bitcoin has a limited amount and can "maintain and increase value", and regard it as an investment tool like stocks and funds. In fact, investment in bitcoin was once very profitable. In the first four months of this year, bitcoin's value soared more than 10 times. In the short term, such a rapid rise has attracted a large number of follow-up speculators
bitcoin also falls sharply. On November 19, the price of bitcoin was fried to 8000 yuan, and then dropped to 2850 yuan on December 18, a month later
nevertheless, the bitcoin market is not in a slump, and even Lin Jia is going to "buy the bottom"“ A friend has bought bitcoin before and heard that he has made a lot of money, "said Lin Jia." I'm going to invest one or two thousand yuan to buy a few bits of bitcoin first. If I lose, I'll lose. Compared with the price of 8000 yuan, it may not be a high point now. Wouldn't it be good if we could make a profit? "
bitcoin charts, an international bitcoin website, shows that nearly 60% of bitcoin transactions recently come from the Chinese market. Many people share Lin Jia's "bottom hunting" mentality
however, the risk of bitcoin is not just the risk of price fluctuation“ Bitcoin is now more of an arbitrage tool than a payment tool, and its technical risk, security risk and regulatory risk are worrying. " Zhao Qingming, an adjunct professor at the school of finance, University of international business and economics, said frankly
first of all, from the perspective of the development history of the Internet, although the algorithm of bitcoin is complex, it is not impossible to be broken. Once broken, the whole system of bitcoin will collapse. Secondly, the private trading platform is not mature. Recently, a number of bitcoin trading accounts were stolen in Shanghai, with a loss of 640000 yuan. In addition, market regulation has not kept up. At present, the servers of many bitcoin trading platforms are built in foreign countries, and they are not registered in the domestic instrial and commercial departments, so it is difficult to protect the interests of investors< In Zhao Qingming's view, it is not advisable to buy and sell bitcoin with a speculative mentality: "bitcoin does not have the basic function of currency, unlike real gold and silver commodity currency, or paper currency credit currency with government credit support. Similar hype is not uncommon in Chinese history. Pu'er tea, Longjing and mahogany furniture also set sky high prices. If the investors who buy bitcoin become the last stroke of drumming, they will only get a bunch of useless electronic symbols. "