Father of blockchain

1. What is blockchain? Application of blockchain technology

what is a blockchain? In essence, blockchain is a decentralized distributed ledger database, which is the underlying technology of bitcoin, and is associated with bitcoin. The blockchain itself is actually a series of data blocks generated by the use of cryptography, each of which contains the information of effective confirmation of multiple bitcoin network transactions

whenever an encrypted transaction occurs, miners with strong computing power in the network begin to use the algorithm to decrypt and verify the transaction, creating new blocks to record the latest transaction. New blocks are added to the end of the original blockchain in time order, and the account book will keep growing and extending

through the complex setting of public key and private key, the blockchain network will broadcast all the transaction books of the whole financial network in real time, distribute the transaction records to each client in real time, and ensure that everyone can only modify their own property. Of course, there are other people's transaction records in the account book. Although you can see the numerical value and the corresponding transaction address (which is basically composed of a long piece of disordered letters and numbers), you can't know the real identity of the trader without using other technical means

what is a blockchain? Since last year, the concept of blockchain has become popular, especially in some developed countries. Blockchain is also known as subversion, which is very popular all over the world. Blockchain will be the first to impact the financial instry, and then will affect a wider range of economic fields. The prediction is based on several core characteristics of blockchain: decentralization, distributed ledger, point-to-point transmission, tamper proof, etc. Because the birth of blockchain is quite magical, and its development is also concerned with the rise of bitcoin in the world, many people will confuse the relationship between blockchain and bitcoin. Some people think that blockchain is a parent-child relationship with bitcoin, while others think that blockchain was born after bitcoin. But in fact, blockchain is the underlying supporting technology of bitcoin, which can be compared with TCP / IP protocol in the Internet. From a certain point of view, bitcoin can be regarded as the first practical application of blockchain generated simultaneously with blockchain

Application of blockchain technology? Since its establishment, Bubi blockchain has been focusing on the R & D and innovation of blockchain technology and procts. It has a number of core technologies, and has made substantial innovation in many aspects, forming a number of core technological achievements, such as: mathematically proven distributed consensus technology, fast large-scale account book access technology, multi chain general ledger technology supporting business form expansion The interconnection technology between heterogeneous blockchains. On April 25, "gege integral" introced the integral system into the concept of blockchain, opened up by multiple parties, issued and exchanged integral, and promoted the circulation of integral. All cooperative institutions can jointly participate in transaction verification, account book storage and real-time settlement; The third-party payment platform of the enterprise points issuer makes the points in and out more flexible. Bubi has developed its own basic blockchain service platform, which has been applied in equity, supply chain, credit and other fields. Bubi has been committed to building an open value circulation network with the core of decentralized (polycentric) trust, so that digital assets can flow freely

what is a blockchain? Application of blockchain technology? We can use bitcoin to describe several application prospects of blockchain. Bitcoin can be said to be a decentralized currency or asset. Every bitcoin can be traced back and found by everyone at any time. This application prospect means that if the transactions between people can return to the original form of barter from the current monetary value measurement method, then the measure of value is no longer legal currency, but bitcoin or other virtual currencies or virtual assets generated by the blockchain, The benefits of the current sharing economy are just the tip of the iceberg. If this traceability, query and tamper proof feature of bitcoin is applied to credit record system, identity authentication system or property right authentication system, many things like "is this house my property?"“ Whether I am unmarried or married "will not exist at all. According to the current development trend, blockchain will not only reshape all aspects of money market, payment system, financial services and economic form, but also change every field of human life.

2. Unknowingly, bitcoin has been in dispute for nearly eight years. Since its birth, people have loved and hated bitcoin. Supporters firmly believe that bitcoin can subvert the existing monetary system, while opponents think it is worthless<

recently, the identity of Satoshi Nakamoto, the father of bitcoin, was accidentally exposed, which made bitcoin, which had graally faded out of the public's view, hot again. However, Craig, an Australian businessman with low-key and simple daily behavior, is still in the market; It took only five days for Craig Wright to admit that he had no courage to give up and prove that he was Nakamoto

not surprisingly, the mystery of "Nakamoto Tsung" will continue

"the twists and turns of Zhongben Cong's identity have not brought significant impact on the bitcoin market," Li Qiyuan, President of bitcoin China (BTCC), said in an interview with the first Financial Daily yesterday (May 9). As an innovative thing, bitcoin has been able to survive and grow steadily in the past few years, marking a kind of success. Liu Shengjun, executive vice president of China Europe Lujiazui Institute of international finance, is worried about the development prospect of bitcoin. "At present, no government is willing to give up its management power and accept bitcoin to replace legal tender."< On November 1, 2008, Nakamoto published a research report in a secret cryptography discussion group, in which the concept of bitcoin was first proposed. In 2009, the world's first bitcoin algorithm software appeared. In just four years after that, the price of bitcoin increased by hundreds or even thousands of times, which eclipsed other investment targets

as the creator of bitcoin, "Nakamoto Tsung" not only grasps the most core technology, but also increases people's curiosity and speculation about his real identity because of its huge wealth brought by about 1 million bitcoins (the current price of one bitcoin is about 2970 yuan)< On May 2, Wright publicly told several major overseas media that he was the so-called "Nakamoto Tsung", the founder of bitcoin, which aroused heated discussion in the market<

(the price trend of bitcoin in the past year)

Wright, 46, is a computer scientist and an entrepreneur. When he introced himself at the 2015 bitcoin investor conference, he said that he was a scholar, engaged in business research, and had a doctor of law and a master's degree in statistics

according to foreign mainstream media, Wright confirmed his identity as "Nakamoto Tsung" from a technical point of view by using the bitcoin owned by the founder of bitcoin. Wright also said publicly that it was not easy to make a decision to disclose his identity, and the reason for his clarification was his love and concern for his work, which he "hoped to eliminate the false legends and worries surrounding bitcoin"

as the Internet world continues to argue about Wright's real identity, the plot takes a major turn< On May 6, Wright suddenly published an open letter entitled "I'm sorry", saying that he "has no courage" to continue to prove his identity as "Nakamoto Tsung"

"I believed that I could end the years of hiding and hiding. However, with the events of the past week fermenting, I was going to publish the evidence that I had the initial block, but I couldn't stand it. I don't have the courage. I can't do it. " Wright said<

Wright once said in his public identity that he did not want money, nor did he want to be famous, nor did he want to be worshipped, but only wanted to be alone. Li Qiyuan told China Business Daily that if he really wanted to live his own life, why did he suddenly choose to expose his identity

obviously, the emergence of Wright has not completely ended the mystery of "Nakamoto" and investors are more concerned about the impact of "Nakamoto" on the price of bitcoin

Gong Ming, the founder of blockchain pencil, told the first financial daily that the identity of "Zhongben cong" will not have a substantial impact on the market, but is more symbolic. Unless "Nakamoto Tsung" sells a lot of bitcoin, it will not have an impact on the price of bitcoin. "From 2009 to now," Nakamoto Tsung "is not a person who has a strong desire for money and will not buy or sell bitcoin because of the high or low value of the currency."< Recently, Zug, a small Swiss town, announced that from July 1 this year, buyers will be allowed to pay for its public services with bitcoin as the payment method. Although there are still great limitations in the scope and amount of this payment method, the small progress is enough to cheer bitcoin's staunch admirers

from the beginning, virtual goods can only be purchased on the Internet, to now, bitcoin can be converted into multi-national currencies, and there are many twists and turns along the way

in February 2014, Mt. GOx, the world's largest bitcoin trading platform at that time, said that bitcoin was stolen e to large-scale hacker attacks, with a total loss of $470 million, and the platform declared bankruptcy. Affected by this, the price of bitcoin plummeted from more than $600 to $102 in just a few seconds, a drop of 83%

in January 2015, bitstamp, one of the most reliable bitcoin trading platforms in the world, was attacked by hackers, resulting in the theft of at least US $5 million of bitcoin, causing panic among some cryptocurrency holders. The openness and security of bitcoin cause instry concern. When the negative news came out, bitcoin was finally recognized by the regulatory authorities

in September 2015, the US Commodity Futures Trading Commission (CFTC) confirmed for the first time that bitcoin and other virtual currencies are defined as commodities, which means that bitcoin is classified as commodities like gold and oil, and trading behavior will comply with all commodity derivatives market rules; In October of the same year, the European Court of justice formally ruled that bitcoin and other virtual currencies in Europe should be exempt from VAT just like traditional currencies. Because according to the relevant provisions of the EU, "currencies, bank bills and coins used as legal tender" do not need to pay VAT. Bitcoin has taken a solid step towards legalization

nevertheless, the market is still worried about whether bitcoin, which reached a historical peak of more than 8000 yuan in 2013, can return to its former glory

at present, the price of bitcoin is hovering around 2900 yuan, which is much more stable than the previous ups and downs, and the trading volume of bitcoin has also dropped significantly

"I don't think bitcoin has changed from hot to cold. Compared with the sharp rise and overheating in 2013, I think it is now the normal price of bitcoin. In 2013, bitcoin rose from tens of dollars in January to thousands of dollars in less than a year, overdrawing the later increase, so it has been falling back after 2013." Gong Ming told the first financial daily

how much is bitcoin worth? It is estimated that bitcoin players, exchanges, mining machine manufacturers and even bitcoin creators can not give an accurate answer

although the value of bitcoin cannot be determined, one thing is certain that the number of bitcoins is certain. Because the "issuance" of bitcoin depends on complex calculation, it is essentially different from the "printing" mode of traditional currency issuance. The total amount of bitcoin graally increases according to the design predetermined rate, and the increase rate graally slows down, and finally reaches the limit of 21 million in 2140. The instry estimates that the total amount has reached 15.5 million

Li Qiyuan believes that the limited number of bitcoin is in sharp contrast to the inflation and the decline in the purchasing power of fiat money caused by the massive printing of money by central banks“ The goal of bitcoin is not to replace the existing currency, but to become a universal digital asset in the world and provide convenience for people's lives. "

it is generally expected that with the departure of short-term speculators, the continuous development of bitcoin related applications and the improvement of infrastructure, the digital currency represented by bitcoin will be in a benign development stage

in addition to bitcoin, there are also outstanding digital currencies such as lightcoin, Ethereum, dogcoin and Ruitai coin.

3.

The price of a bitcoin soared from more than $20000 to $40000. This can not help but arouse my research interest, or simply understand what bitcoin is, what its mechanism looks like, and uncover its mystery. Therefore, after a simple search of some information and some understanding of the special currency, I sorted out the information on hand< (3) purpose: decentralize, rece risk

(3) only the central server can store and process data in the central network; Large amount of data storage; The central manager has great authority

all servers in the distributed network can store and process data, and each server has equal status, which can store more data and has higher security<
this is the general content of popular science. If you want to know more about it, you can take a look at Nakamoto's paper and the official popular science video below

4.

Blockchain technology has been popular since its birth. For the general public, it seems to be very close to us, but we don't know what it (blockchain) is; In fact, the blockchain instry, which is still in the early stage of development, is in chaos both from the technical level and from the content level

What is blockchain

blockchain is a technical solution to maintain a reliable database collectively through centralization and distrust. In short, blockchain technology is like a nationwide accounting method. There is a database behind all the systems. You can think of the database as a big ledger. When the data changes, everyone in the system can make bookkeeping, and the fastest and best bookkeeping person will be written into the account book and sent to other people to complete the update of the account book. This way, we call it blockchain technology

, for example, in the payment behavior, there should be third parties involved in any transfer before, for example, the third party organizations such as banks or Alipay, and the block chain technology can effectively solve the intermediary credit problem, so that two people who are not acquainted with each other can complete the transfer directly without the third party. p>

2. What are the advantages of such a nationwide bookkeeping blockchain

knowing what a blockchain is, it is not difficult for us to find that although the efficiency of blockchain is sacrificed, the security is greatly guaranteed. First, the system can hardly be destroyed; second, the accounting process is open and transparent, and cheating is impossible; Third, the cost is greatly reced, and the efficiency is relatively higher

Is blockchain software? What program is it written in

perhaps through the above introction, some people will ask, is blockchain a specific software? Actually, it's not. Blockchain is like a database. It's a design idea of a specific technology. It can be implemented in most languages, and in many ways

having said so much, you should know what blockchain is. In fact, blockchain has little to do with the ordinary people born in the 90s. We just need to enjoy the convenient services brought by the Internet or cloud services, unless you want to take blockchain as a business. At present, blockchain technology is still developing rapidly, and its design idea is relatively simple, Maybe it will become more complicated in the future

5. Let's talk about the social or economic significance of blockchain. In fact, many of the previous technologies were devoted to "proctivity". For example, artificial intelligence is a kind of progress in proctivity. The blockchain, which has greatly improved the proction relations, is committed to the proction relations. So why do you say that
because the so-called proction relationship is actually how to do business between people and business partners. And these things, originally, are in the cognitive process between people, and there is no special program to program or quantify it
for example, if you and I are good friends now, we can do business. If someone stirs up our relationship and we are not good friends, we will not do business. Even if we can make money in business, we will not do business because there is no trust between us
as for blockchain, it is actually because the data is authenticated by all nodes and backed up at the same time, so my data is as real as possible and can't be tampered with. In this case, if you believe my data, you can make a program on this basis, and then use the data to make what kind of business contract, what kind of service, what kind of service, and what kind of service, what kind of service, what kind of service, what kind of service, what kind of service, what kind of service, what kind of service, etc This "proction relationship" of commercial cooperation is programmed. In this way, we believe in the data and the program compiled by the algorithm. Because you believe in the data and the program, you can develop all kinds of apps in the program. These apps are the proction relations and what business to do. This is: blockchain is actually a reconstruction of "proction relationship".