BTC multi space ratio

3.

They are:

bitcoin

the concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's ideas, the open source software was designed and released, and the P2P network was built on it. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system

bitcoin cash

bitcoin cash is a new version of bitcoin with different configurations launched by a small number of bitcoin developers

extended data:

virtual currency refers to non real currency. Well known virtual currency, such as network company's network currency, Tencent company's Q currency, Q point, Shanda company's voucher, Sina's Micro currency (used for micro games, Sina reading, etc.), chivalrous Yuanbao (used for chivalrous road game), silver pattern (used for bixue Qingtian game)

the popular digital currencies in 2013 are bitcoin, Leyte coin, infinite coin, quark coin, zeta coin, BBQ coin, pennies (Internet), invisible gold bar, red coin and prime currency. At present, hundreds of digital currencies are issued all over the world. Popular in the circle & quot; The legend of "bitcoin, Wright silver, infinite copper, pennies aluminum"

4. In order to understand the technical principle of bitcoin, we need to understand two important cryptographic techniques: hash code: it converts a long string into a fixed length string, and its conversion is irreversible, that is, it is impossible to guess the original string from hash code. Sha256 is mainly used in bitcoin protocol
public key system: corresponds to a public key and a private key, keeps the private key in the application and publishes the public key. When Party A transmits information to Party B, it can use Party A's private key to encrypt the information, and Party B can use Party A's public key to decrypt the information, so as to ensure that the third party cannot impersonate Party A to send the information; At the same time, when Party A transmits information to Party B, it is encrypted with Party B's public key and sent to Party B, and then Party B decrypts it with his own private key, so as to ensure that the third party cannot eavesdrop on the communication between the two people. RSA is the most common public key system, but the lliptic curve digital signature algorithm is used in bitcoin protocol. What's the difference between cash and bank account? Bitcoin is an electronic currency in BTC. In this article, it is also used to refer to the whole bitcoin system. Like opening an account in a bank, the corresponding concept in bitcoin is address. Everyone can have one or more bitcoin addresses, which are used to pay and collect money. Each address is a string that starts with 1. For example, I have two bitcoin accounts, and. A bitcoin account is uniquely determined by a pair of public key and private key. To save the account, you only need to save the private key file. Unlike bank accounts, banks keep all transaction records and maintain the book balance of each account, while bitcoin's transaction records are jointly maintained by the whole P2P network through a pre agreed protocol. How much money is in my account address? Although the current account balance can be seen by bitcoin software, unlike banks, there is no place to maintain the book balance of each address. It can only calculate the account balance in real time through all historical transactions. How do I pay? When I pay from address a to address B of the other party, the payment amount is e. at this time, both parties will announce the transaction information to each network node, telling address a to pay to address B, and the payment amount is e. In order to prevent the third party from forging the transaction information, the transaction information will be encrypted with the private key of address A. at this time, the network node receiving the transaction information can use the public key of address a to verify that the transaction information is indeed sent by address a. Of course, trading software will help us do these things, we just need to input the relevant parameters in the software. What will the network node do after receiving the transaction information? This is the most important part of the bitcoin system, which needs to be elaborated. For the sake of simplicity, only bitcoin protocol has been implemented. In the current version, each network node will save all transaction information synchronously. There are two kinds of transaction information in history, one is & quot; Verified & quot; The transaction information, that is, the verified transaction information, is stored in a series of "blocks". Each & quot; block" Is the previous & quot; bock" The ID of each block is the hash code of the hash code of the block and the new transaction information (see an actual block). The other category refers to those who also & quot; Unverified & quot; The transaction information just paid above belongs to this category. When a network node receives new unverified transaction information (possibly more than one), it can calculate the book balance of each address at that time because the node keeps all the transaction information in history, so it can calculate whether the transaction information is valid, that is, whether there is enough balance in the payment account. After eliminating the invalid transaction information, it first takes out the last & quot; block" Then, the unverified transaction information is combined with the ID, and a verification code is added to form a new "block". It needs a lot of calculation to build a new block, because it needs to calculate the verification code, so that the above combination becomes a block, that is, the first several bits of the hash code of the block are 1. At present, the first 13 bits need to be 1 (generally, the specific method is uncertain), which means that if the block is generated by enumeration method, the average number of enumerations is 16 ^ 13. Using CPU resources to generate a block is called "gold mining", because the proction of the block will get a certain reward, and the reward information has been included in the block. When a network node generates a new block, it will broadcast to other network nodes. However, this network block may not be accepted by the network, because it is possible that other network nodes have proced the block earlier. Only the earliest block or the block with the largest number of subsequent blocks is valid, and the remaining blocks are no longer used as the initial blocks of the next block. How does the other party confirm that the payment is successful? When the payment information is distributed to the network node, the network node begins to calculate whether the transaction is valid (that is, whether the account balance is enough to pay), and attempts to generate blocks containing the transaction information. When six blocks (one direct block and five subsequent blocks) contain the transaction information, the transaction information is considered "verified", so that the transaction is formally confirmed, and the other party can confirm the successful payment. A possible problem is that I will pay the balance of address a to address B, and at the same time pay to address C. If I only verify that the single comparison transaction is valid. At this point, my way of cheating is to generate six blocks including B to B and six blocks including C to C before the truth is revealed. Because I need a very long CPU time to generate a block, compared with the whole network, the probability of my cheating success is very small. What is the motivation of network nodes to proce blocks? As can be seen from the above description, in order to make the transaction information effective, the network node needs to generate 1 and 5 subsequent blocks to contain the transaction information, and such block generation is very CPU intensive. How to let other network nodes help to proce blocks as soon as possible? The answer is very simple. The agreement stipulates that BTC will be rewarded for the address where the block is proced, as well as the Commission promised by both parties. At present, the reward for procing a block is 50btc, which will be halved every four years in the future. For example, the reward will be 25btc from 2013 to 2016. Is the transaction anonymous? Yes, and No. All bitcoin transactions are visible. We can check all transaction records of each account, such as mine. But what's different from the banking monetary system is that everyone's account itself is anonymous, and everyone can open many accounts. In general, anonymity is not as good as it claims. But bitcoin has another advantage in doing black market trading: it can't be frozen. Even if the police trace a bitcoin address, there is nothing they can do unless they trace the computer used by the exchange based on the Internet address. How to ensure that bitcoin does not depreciate? Generally speaking, in the case of equivalent trading activities, the value of money is inversely proportional to the amount of money issued. Unlike the traditional money market, the central bank can determine the amount of money issued. Bitcoin does not have a central issuing institution. Only by procing blocks can we get a certain amount of BTC currency. Therefore, bitcoin's new amount of money depends on: 1. The speed of procing blocks: bitcoin's agreement stipulates that the difficulty of procing blocks is fixed at an average of 2016 every two weeks, about 10 minutes. Moore's law of doubling CPU speed every 18 months will not speed up the proction of block. 2. The number of rewards for block proction: at present, 50 BTC is awarded for each block proced, which is halved every four years. In 2013, 25 BTC is awarded, and in 2017, 12.5 BTC is awarded. Considering the above two factors, bitcoin's currency issuing speed is not controlled by any single node in the network. Its protocol makes the currency stock known in advance, and the maximum stock is only 21 million BTC

5.

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 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

"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

It is reported that bakkt is one of the main catalysts for the sharp rise in bitcoin prices earlier this year. However, he further added that it is too early to see the long-term impact of this futures proct on 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 market

Fourth, 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