After the New York consensus
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
extended data:
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
to mine bitcoin, you can download the special bitcoin computing tools, register various cooperation websites, fill the registered user name and password into the computing program, and then click the operation to officially start
the bitcoin network is robust, but the bitcoin trading platform is fragile. Trading platform is usually a website, which will be attacked by hackers or shut down by competent authorities
Last night's bitcoin was destined to be recorded in history
at 2:00 a.m., bitcoin suddenly plummeted, rapidly falling by nearly $1500. 3: 45, bitcoin fell rapidly from $9700 to a low of $7998. This is the first time since mid June that bitcoin has fallen below $8000, the lowest level in four months
The sharp drop in the price of the currency has brought about a terrible situation in the contract market, which was full of blood last nightaccording to the statistics of coin data, in the past 24 hours, a total of 920 million usdt (about RMB 6.65 billion) of burst orders were added
"bitcoin crash" also appeared on the microblog hot search list again two months later
it is worth noting that a few days ago, there was news in the market that "the Central Bank of China will issue digital currency within 80 days". At a news conference yesterday (September 24), Yi Gang, governor of the people's Bank of China, said that there is no timetable for the introction of digital currency. He said the goal of digital currency and electronic payment in the future is to replace part of cash
bitcoin plummeted by more than 15% in 100 minutes
below US $8000
last night, the collapse of bitcoin shocked investors again
at 2:00 a.m., bitcoin suddenly plummeted, rapidly falling by nearly $1500. 3: 45, bitcoin fell to a low of $7998, down more than 15%. This is the first time since mid June that bitcoin has fallen below $8000, the lowest level in four months
"in terms of bitcoin, this is quite a rare event," said Qiao Wang, proct director of messari, a New York based cryptocurrency centric data and research company
so far, bitcoin has plummeted nearly 35% from the highest point of US $13355 in the year
this means that bitcoin's bull market in 2019 is in trouble
since September 2, BTC has started to collapse from a bearish downward triangle, which has been noticed by most people in the cryptocurrency twitter community
some market participants said that the decline of bitcoin was partly e to technical factors. They pointed out that the digital currency has been falling in a triangle, which is a bearish signal
ZBG CMO Lizzie of the Hong Kong digital currency exchange
Lo told the fund that a series of expectations have been digested, including the expected baktt exchange online, but the trading is flat. In addition, the institutions will make corresponding strategic adjustments,
several major institutions short bitcoin
as of the press release, the price of bitcoin was $8651.53, down 11.08% in the past 24 hours
and the coin circle is also full of sorrow: EOS, Ethereum, etc. all fell by more than 10%
however, Lizzie Lo said that after a round of slump,
it noticed that usdt, a stable currency, had a large premium as a ticket for investment in the currency circle, which meant that there was a lot of money on the sidelines. In the medium and long term, it believes in the consensus of bitcoin, and the downward adjustment only gives opportunities for traditional funds that had not entered the market
investors were awakened by qiangping's SMS in the middle of the night
the overall collapse of the currency circle has brought about a miserable contract market, which was full of blood last night
according to the statistics of coin data, in the past 24 hours, a total of 920 million usdt (about RMB 6.65 billion) of burst orders were added. Among them, bitcoin added 6.34 million burst warehouse receipts, about 72000
BTC; EOS added 9.79 million explosive warehouse receipts, about 36.07 million EOS; Ethereum added 10.5 million explosive warehouse receipts, about 652000 eth
some bitcoin investors said that they woke up in the middle of the night last night, received a burst SMS, and then couldn't sleep any more...
the long short ratio ranged from 2:1 to 1:1
however, there were also those who made a lot of money by shorting:
according to the triple BTC short index of ZBG platform, the short profit reached its peak at 3:30 on September 25. So far, the short index has grown by 33.5% in 24 hours
Lizzie Lo points out that at 3:30 a.m., the triple shorting index reaches its peak, which means that the most people are short at that time
under the crazy counterattack of bears, the market long short ratio was slaughtered from 2:1 to 1:1
in addition, as investors sought to close their positions in the crazy sell-off, they withdrew from the market of $30 billion within 24 hours About 213.3 billion yuan)
Yi Gang: at present, there is no timetable for its launch. The goal is to replace part of M0. It is worth noting that recently, it was reported in the market that "the Central Bank of China will issue digital currency within 80 days". At a news conference yesterday (September 24), Yi Gang, governor of the people's Bank of China, said that there is no timetable for the introction of digital currency Yi Gang said:I would like to say a few points about digital currency. First, the people's Bank of China has been studying digital currency since 2014. We have a digital currency Research Institute and a special team, and we have made positive progress. We combine the central bank's digital currency and electronic payment tools, so it is called a package of digital currency and electronic payment
Second, what are the goals of digital money and electronic payment in the future? The goal is to replace a part of M0, that is, to replace a part of cash. It does not mean to replace M1 or m2 Third, the future framework of our digital currency is a two-tier operation system of the central bank and commercial banks, which will not change the current money supply path and system, so as to fully mobilize the enthusiasm of the marketFourth, we will adhere to the centralized management, do not presuppose the technical route in the research and development work, we can choose the best in the market through fair competition, we can consider the blockchain technology, we can also adopt the new technology evolved from the existing electronic payment, fully mobilize the enthusiasm and creativity of the market, we have also set up a mechanism compatible with the incentive mechanism of market institutions. As for when you ask, we don't have a timetable. I think there will be a series of research, testing, pilot, assessment and risk prevention. Especially if digital currency is used across borders, there will be a series of regulatory requirements such as anti money laundering, anti terrorist financing, anti tax haven and "know your customer"
- for more data, please refer to the in depth analysis report on business model innovation and investment opportunities of China's blockchain instry published by foresight Instry Research Institute
LBTC was highly forked in block 499999 of bitcoin on December 23, 2017, with a circulation of 21 million, and does not support segwit.
preventive measures:
1. Start the firewall of windows first
2. Right click the network icon in the lower right corner - Sharing Center - Windows Firewall - Advanced Settings - inbound rules on the left - new port on the right - TCP - input these ports - deny access
There must be some worries when using face recognition, which mainly comes from two aspects: the first is the reliability of face recognition technology, and the second is the security of face recognition technology. Now I will talk about the disadvantages and worries of today's face recognition technology from these two aspects
to sum up, based on the safety and reliability of face recognition technology, I am still worried about face recognition
section one: why do you split up when you don't say a word
the concept of bifurcation originated from bitcoin
as we know, bitcoin trading is based on bitcoin blockchain network (one block by one forms a chain of front and back Association, forming a bitcoin blockchain network). Since a block is a block, it must have capacity (let's fill in the block, it is nothing more than a collection of codes), The size of the block capacity will limit the efficiency of the transaction. If the block capacity is too small, the smaller the number of transactions will be. Once the transaction volume is too large, it will cause congestion
the capacity of bitcoin block is only 1m, and it can hold only 5-7 transactions. In the past, there were relatively few users for bitcoin transactions, so this capacity is no problem. However, with the rise of bitcoin price, more and more users swarmed in, and the bitcoin block could not accommodate so many transactions, resulting in congestion
bitcoin is anxious: slow down, brother Dei, I can't keep up with your trading speed. Hello! Users are also anxious: brother, can you hurry up
this is a big problem, not only because we have limited patience, but also because bitcoin's positioning is currency. As a currency, you should pay and collect money quickly, accurately and ruthlessly. If you are always so slow, when can you realize the currency attribute? So, this is a big problem
of course, the bitcoin community knows the importance of this problem. As for how to solve this problem, the bitcoin community is divided on whether to expand the capacity of bitcoin blocks (as we have just said, it is too little capacity of bitcoin blocks that leads to slow transaction speed and congestion)
the controversy is mainly divided into two camps:
the original development team of bitcoin, led by core, believes that bitcoin is an electronic gold of value storage, which will destroy its core once it is expanded
however, the mining team led by Wu Jihan believes that bitcoin should be a kind of currency with rapid circulation in the future, and it needs to be expanded to solve the problem of transaction congestion. Because of the decentralized nature of the blockchain, no indivial or organization can decide how to "expand" the bitcoin system. Everyone has their own opinions, and their opinions are divided. No one is willing to give in. Therefore, everyone goes their own way. The bitcoin chain has split into BTC and BCH chains, and over time it has evolved into the so-called "bifurcation"
this is the origin of bifurcation
what happens after the second section bifurcates
for blockchain, bifurcation is the change of blockchain protocol, which is similar to upgrading the blockchain to make up for the shortcomings of the system. This is just like our current mobile phone software often prompts you to upgrade
however, we know that blockchain is decentralized. Unlike your mobile software, developers can upgrade when they say so. In the world of blockchain, any modification needs the consensus of all members. No one can decide when to change or how to change the underlying agreement of blockchain
therefore, when the original development team of bitcoin and the miner team have differences, the system will be divided into two parts, and two new systems based on the original blockchain will appear. Everyone has their own problems, and no one can intervene. In this way, the bitcoin system is divided into two chains: BTC and BCH, which are called "bifurcations", and BCH is called bifurcated currency (the bifurcated currency of bitcoin)
in fact, not only BCH, but also bitcoin has many bifurcated coins. Why is BCH the first thing to think of when it comes to bifurcated currencies? This is because BCH is a successful bifurcated currency. When its market value is the highest, it ranks the fourth in the list of cryptocurrencies, next only to bitcoin, Ethereum and EOS
section 3 hard fork and soft fork
let's make a metaphor: if bitcoin system is the trunk of a big tree, then BCH and other fork coins are the branches of the tree. However, bifurcation is not as simple as this metaphor. It can be divided into hard bifurcation and soft bifurcation
first, hard bifurcation: goodbye, never see again
the BCH we mentioned above belongs to hard bifurcation. Hard bifurcation means that nodes using old software can no longer verify blocks proced with new software nodes. If you want to verify, you can only upgrade. After upgrading, it is equivalent to changing the track and running on another new system. Just like BCH to BTC, BCH is a brand new track (a brand new chain), and the coin on this chain is BCH (bitcoin cash). Then, nodes using BCH system can no longer go to BTC network for transaction verification. Hard bifurcations, generally speaking, mean going their own way. There is no intersection any more< Second, soft bifurcation: getting better to meet again
soft bifurcation is opposite to hard bifurcation. Soft bifurcation means that nodes using the old version can verify the blocks proced by nodes using the new version, and nodes using the new version can also verify the blocks proced by nodes using the old version. The two versions are compatible
the way bitcoin upgraded its isolation witness in 2017 is soft bifurcation. In the whole process, it doesn't matter whether we use the old version or the new version, because they are compatible. The new version only solves some problems better. In essence, we are still running on the bitcoin chain, and there is no new coin
to sum up, the difference between soft fork and hard fork is whether nodes using old software can be compatible with nodes using new software. Compatibility is soft fork, while incompatibility is hard fork.
it is worth noting that the price of bitcoin fluctuates significantly ring the annual meeting, and it also becomes a hot spot in bitcoin market.
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