Throw bitcoin and stand up

1. Before we answer this question, we should first find out what is bitcoin
bitcoin is a virtual currency. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system. Function: bitcoin is a kind of network virtual currency, the quantity is limited, but it can be used to cash out: it can be converted into the currency of most countries. You can use bitcoin to buy some virtual items, such as clothes, hats, equipment, etc. in online games. As long as someone accepts it, you can also use bitcoin to buy real-life items
bitcoin can be traded in the exchange, and people can buy a certain amount of bitcoin with money, but the makers of bitcoin are more general
first of all, bitcoin is an encrypted digital currency that many people can buy. The so-called "makers" refer to those who hold a large amount of bitcoin in an exchange. However, there are many factors that affect the price of bitcoin. People who sell bitcoin in a short time in an exchange will indeed affect the price of bitcoin, But the impact is minimal
as long as the countries that support digital currency can buy certain digital currency in the exchange, there is no way to control those countries strictly.
bitcoin is a technology application of blockchain, bitcoin is a kind of digital currency, we must treat it dialectically, we can't buy it blindly, We must treat bitcoin rationally.

2. 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

3. Ah, the transaction logic of bitcoin is generally based on a principle of a blockchain, and then as we say, it is a buy and buy out of content

4.

Bitcoin is the first distributed virtual currency

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. After completing the installation of bitcoin client, you can directly obtain a bitcoin address. When others pay, you only need to paste the address to others, and you can pay through the same client

after installing the bitcoin client, it will assign a private key and a public key. You need to back up the wallet data containing your private key to ensure that your property is not lost. Unfortunately, if the hard disk is completely formatted, personal bitcoin will be completely lost

extended information:

as a virtual commodity, bitcoin itself has no national boundaries, and its operation mode is a "decentralized" monetary system, which is very convenient for one-time large transaction. Bitcoin is traded through the network, and the owner's identity is only in the form of a set of encrypted computer code

in the operation, input a digital address directly, click the mouse a few times, and wait for the confirmation of the transaction to complete the transaction. The network can only record which address a bitcoin was g up from and how it was transferred

however, the identity of the owners of these addresses can not be verified, which is just like when money goes to an ownerless bank account, the relevant transactions can easily be invisible from the perspective of government supervision, and it is difficult to be tracked or intercepted. In addition, bitcoin can evade the scrutiny of exchange control institutions required by normal cross-border remittance, and the transaction records will not be recorded by banks and other parties

naturally, the problem of reporting to relevant departments after the transaction exceeds a certain amount is avoided. Buy bitcoin with domestic currency, sell it on foreign trading platforms, and withdraw it in US dollars. Asset transfer can be completed in a few minutes

it is not difficult to open an overseas bank account related to bitcoin for foreign exchange, and the conversion is very convenient. Because of these characteristics, bitcoin has been chosen by criminal organizations

5. The most direct cause of the crash: the bitcoin exchange MT GOx was attacked by hackers, causing a lot of panic selling of bitcoin by investors
in addition, the underlying reason is that the world does not recognize the monetary payment property of bitcoin, but regards it as an investment commodity similar to gold, and even has large-scale capital participation in speculation.

6.

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. But in China, bitcoin is forbidden to circulate

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 biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity

extended information:

Article 1 of the announcement on preventing the financing risks of token issuance accurately understands the essential attributes of financing activities of token issuance. Token issuance financing refers to the so-called "virtual currency" raised from investors by the financing subject through the illegal sale and circulation of token. In essence, it is an unauthorized illegal public financing behavior, suspected of illegal sale of token bills, illegal issuance of securities, illegal fund-raising, financial fraud, pyramid schemes and other illegal criminal activities

Relevant departments will closely monitor relevant developments, strengthen cooperation with judicial departments and local governments, strictly enforce the law in accordance with the current working mechanism, and resolutely deal with market chaos. If suspected crimes are found, they will be transferred to judicial organs. The token or "virtual currency" used in token issuance financing is not issued by the monetary authority, does not have such monetary attributes as legal compensation and compulsion, does not have the same legal status as currency, and cannot and should not be used as currency in the market

Article 2 no organization or indivial may illegally engage in token issuance and financing activities. As of the date of this announcement, all kinds of token issuance and financing activities shall be stopped immediately. Organizations and indivials that have completed the token issuance and financing should make arrangements such as refund, reasonably protect the rights and interests of investors, and properly handle risks. Relevant departments will seriously investigate and deal with the activities of token issuance and financing that refuse to stop and the illegal behaviors in completed token issuance and financing projects

7. Bitcoin has no support. As long as someone wants it, bitcoin can be used as a general equivalent and can be used by businesses. It has no value in itself. Bitcoin is not a standard currency. Gold and silver are naturally currencies. It means that gold and silver can be used as a general equivalent and it has value in itself. Bitcoin, in fact, is a credit that supports it, but this credit can be turned into not worth a hair.

8.

Bitcoin BTC 2009 Satoshi Nakamoto is bitcoin / org ~ $24.3 billion is SHA-256; LTC 2011 coblee is litecoin / org ~ $3.6 billion is script infinite; IFC 2012 ifccion is ifccoin / ORG~$ $20 million is a script quark, qrk 2012, qrkcion is cgbcion / org - $10 million is a script zeta, ZET 2012 zetcony is ZET / org - $10 million is a script proof of work / POS

9. Do you mean to run for money with farmers? To put it bluntly, it's good to sell game currency with practice. I have friends who do it. The first thing to solve is credibility. That is to say, how to make others believe you and buy your game currency first or the money first. If you are a dreamy player, it's a good start. If you don't play, it's not a good start. If you hire a farmer, I'd like to give you a suggestion, that is, don't make money on a tree. You can talk about westward journey, world of Warcraft and so on at the same time; Do you mean to run for money with farmers? To put it bluntly, it's good to sell game currency with practice. I have friends who also do this. The first thing to solve is credibility. That is to say, how to let others believe you and buy your money is that you have a future, but you must have a complete system. First of all, get some people from Henan, and then start to operate. First, it will cost several hundred yuan a month, and then it will guarantee food and housing. Of course, you have to have some funds first. About 60000 or 70000, find a promising area in the early stage, and then start to practice. When it's high, you can run darts to take the plot. First of all, you have to rent a machine. Don't buy because you don't have enough money. It's better if you have an Internet bar. You need to find a reputable currency trading website, so you can't do anything you want to do.
it's a question of whether you play the game currency first or he pays first. If you're a dreamy player, it's a good start. If you don't play, it's not a good start. If you hire a farmer, I'll give you a suggestion, that is, don't make money in a tree, talk about westward travel World of Warcraft and so on can be done at the same time. And you have to have a whole system. First of all, get some people from Henan, and then start to operate. First, it will cost several hundred yuan a month, and then it will guarantee food and housing. Of course, you have to have some funds first. About 60000 or 70000, find a promising area in the early stage, and then start to practice. When it's high, you can run darts to take the plot. First of all, you have to rent a machine. Don't buy because you don't have enough money. It's better if you have an Internet bar. You need to find a reputable currency trading website, so everything is not open to the line.