The 4th blockchain

1.

blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. Blockchain is an important concept of bitcoin,

in essence, it is a decentralized database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains a batch of information of bitcoin network transactions, Used to verify the validity of its information (anti-counterfeiting) and generate the next block

extended data

most blockchain public chains are limited by scalability. The biggest feature of blockchain technology is decentralization, which requires that all accounts in the network need to deal with the accounting process. Distributed accounting has high security, low misoperation rate, political neutrality and correctness

however, blockchain technology embraces these features at the same time, sacrificing scalability, unable to meet the personalized supervision, and slightly insufficient in protecting data privacy. Moreover, with the increase of the number of ledger, the interaction delay will increase exponentially, that is to say, the more ledger in the blockchain network, the higher the delay

2. Omer ozden, Evgeny Kosolapov, Lee Wilkins, chase freo, Yang Dong, Yu Hong, Liu Hui, Shen Dahai, Xu Jizhe, Wu Bo, Song Wei and other guests

3. Hello,
WBC is the abbreviation of world blockchain conference, namely the first world blockchain conference
is a semiannual world blockchain instry event initiated and held by the world blockchain consortium,
place: Macao, China,
time: April 22-24, 2018, lasting for 3 days
this is the information I saw on the official website, I hope it can help you.

4. The world blockchain conference, a semiannual world instry event in the field of blockchain, aims to build an international platform for global blockchain related instries to interconnect, share and co govern, and create a win-win situation.

5. Blockchain is the biggest trend in the next decade
if you look at the problem with the thinking of 30 years ago, you will think that others are crazy, but in fact you are out of date
the concept of blockchain can be traced back to the end of 2008. In the forum, a mysterious personage named "Nakamoto Tsung" published a paper "bitcoin: a peer-to-peer e-cash system" and proposed the concept of blockchain for the first time
on January 3, 2009, the first block of the blockchain was born, which is called the "Founding block"
almost with the birth of blockchain technology, bitcoin became the first thing to play its role. In the following years, bitcoin graally swept the world. In 2017, its crazy market made blockchain technology known to all
the idea of blockchain first appeared in the famous bitcoin open source project. In the process of its birth and development, bitcoin project draws on the technical achievements from digital currency, cryptography, game theory, distributed system, cybernetics and other fields. It can be said that bitcoin project is good at all. As its core supporting structure, blockchain technology is a remarkable innovation achievement
blockchain is a distributed database system with different nodes, which is an open ledger system<
three characteristics of blockchain
compared with the traditional centralized scheme, blockchain technology mainly has the following three characteristics:
the core idea of blockchain is decentralization
in the blockchain system, the rights and obligations between any node are equal, and all nodes have the ability to vote with computing power, Thus, the result recognized by more than half of the nodes is guaranteed. Even under serious hacker attacks, as long as the number of nodes controlled by hackers does not exceed half of the total number of nodes in the world, the system can still operate normally and the data will not be tampered with
block chain's biggest subversive is the establishment of credit
the collective maintenance of blockchain can rece the cost
in the centralized network system, the maintenance and operation of the system depend on the operation and operation of platforms such as data center, and the cost cannot be omitted. Anyone can participate in the nodes of the blockchain. Each node can verify the correctness of the results of other nodes' records while participating in the records, which improves the maintenance efficiency and reces the cost
in a word, blockchain touches money, trust and power, which are the fundamental basis for human survival< Its development has gone through three stages
1. Brewing period: from 2009 to 2012, bitcoin and its instrial ecology are the main economic forms
2. Embryonic period: from 2012 to 2015, with bitcoin entering the public view, new wallet payment and remittance companies appeared, and blockchain economy spread to the financial field. The underlying technology of blockchain is constantly innovated. Blockchain technology is separated from bitcoin system
3. Development period: in 2016, we began to explore instry applications, and a large number of blockchain start-ups appeared. The popularity of ICO in 2017 has given blockchain unprecedented attention
"blockchain 2.0 era" is coming
the application service layer is the driving force for the sustainable development of blockchain, which is divided into three stages of application: 1.0, 2.0 and 3.0
programmable currency: blockchain 1.0 application
programmable currency is the digital currency represented by bitcoin, but it is not the legal tender of any country or region, and there is no government authority to provide guarantee for it
programmable Finance: blockchain 2.0 application& quot; Smart contract& quot; Using program algorithm to replace the concept of contract execution. This enables blockchain to expand from the original monetary system to the registration and transfer of equity, creditor's rights and property rights, the transaction and execution of securities and financial contracts, and even the financial fields of gambling and anti-counterfeiting
programmable Society: blockchain 3.0 application
blockchain is the core of value Internet, which can confirm, measure and store the property rights of information and bytes representing value in each Internet. It can not only record the transactions of the financial instry, but also record almost anything valuable that can be expressed in the form of code. Its application can be extended to any field with demand, and then to the whole society
at present, the application of blockchain has begun to surpass bitcoin (blockchain 1.0), enter the era of blockchain 1.5, and transition to the financial field (blockchain 2.0)
in the next 3-5 years, blockchain may go beyond the financial field and enter the field of social notarization and intelligence (blockchain 3.0), including identity authentication, notarization, arbitration, audit, domain name, logistics, medical care, mail, visa, voting and other fields. Its application scope will be expanded to the whole society, and blockchain technology is likely to become a new technology& quot; All things are connected& quot; It's the lowest level protocol
at present, blockchain technology has been recognized by the world, and its development has become an inevitable trend. Accompanied by more people's attention, "in the next 30 years, new technologies will be integrated into all aspects of traditional instries, and human society will turn upside down. No matter who you are, no matter where you are, all of us will be a part of this great change."
this is the current situation. Blockchain has given the post-90s an opportunity. However, if you want to control blockchain technology without being affected by negative factors, the most important thing is to have a clear understanding of it, whether it is regulators, researchers, speculators or bystanders
it's time to devote more energy to blockchain technology
in China, the average annual salary of blockchain positions has reached more than 300000, and that of some enterprises has reached more than 1 million. The monthly salary of blockchain instry graates in Beijing, Shanghai and other places has exceeded 20K! If the post-90s seize the bonus of the times, they may become the next Alibaba in the future! If you miss it, you may regret it for ten years.

6. The first instrial revolution brought steam power and factories. For the second time, there were railways and electricity. The third time has given us the convenience of Internet, digital computer and modern world
these revolutions started and ended with the creation of better and more efficient machines. But the fourth revolution, the instrial Internet of things (iiot) asserts, is coming, and it will not follow in the footsteps of its predecessors
the fourth revolution will not focus on stronger and faster machines: it will focus on machines, processing, sharing and spontaneous information behavior, fundamentally changing our relationship with tools, the world and each other
the data revolution
is not coal, steel, nor silicon. The currency of the fourth revolution will be data
a single gas turbine, coupled to the instrial Internet, generates more than four times as much data in one day as the global Twitter as a whole, but the data we analyze is less than 1%. Bill RUH, chief executive of Ge digital, predicts that digital information will overflow, and today's analysis tools are hopeless
"ten years ago, we might have introced 1TB of data every day." "Today, it's up to about 10000 TB of data," RUH told the Boston Globe. By 2020, we expect to introce about 1 million terabytes of data a day. "
the data generated by future machines is about the same as that of the library of Congress. Imagine reading every book in the library of Congress and then having to summarize what you've learned on 10 pages. The task is not only huge, but also ridiculous
the real miracle of the fourth instrial revolution will not be to proce data, but intelligent machines that can analyze these data and communicate with their peers in the network. Each networked machine will then take action to change its processes to improve efficiency and feed back its changes to the network
I hope these smart machines will bring our world economy to a climax: RUH and Ge believe that in the next 20 years, the smart machines and Internet of things instry will add 10 to 15 trillion US dollars to the global economy. Given that global gross domestic proct (GDP) was about $74 trillion in 2015, this is a huge growth
the foundation of the revolution
for the coming revolution, there are two components that are important and necessary: a centralized, instry-specific Internet communication network, such as predix of General Electric; And systematic, decentralized way, and hinder dishonest communication to promote business development
the specific iiot network must act as a hub for intelligent machines to interact with each other and with human creators. Sensors on the computer collect a large amount of data, and then filter the data in real time. In other words, it can be imagined that it happened on the basis of a machine. However, the investigation results of relay equipment and the decision made without human intervention, in order to truly build an intelligent network, the machine needs a single communication network
imagine that when the aircraft is still in the air, the sensors of the aircraft engine recognize the part that is about to fail, and then communicate with the destination airport. The engine will need maintenance and order replacement parts before landing
this intuitive machine is not a science fiction dream: it's our future
in my opinion, iiot information network is only half the success, and ultimately it is about e-commerce. Seeing it as a public road, millions of autopilot cars will run on top one day.
now, these autopilot cars run on a single system. But how do we ensure that every autopilot will obey the traffic rules? For example, how can we ensure that the vehicle does not send fraud information about its whereabouts at the time of the accident? If there are only two parties involved in the accident, then each passenger will confirm the story of his own car, and there is no way to verify the position claimed by each party
considering that decentralized, satellite based GPS will affect the situation. The system is just and connected to every car. Of course, every car can continue to lie, but it's much easier to verify which side is telling the truth
e to the nature of the GPS system and the nature of its cancellation, the autopilot car has no reason or is tampered with by its owner. This strong incentive for integrity is to promote the trade between autopilot cars, and it is necessary for owners to feel that their investment in these vehicles is safe. Br />GPS technology is for auto driving vehicle, just like network block chain technology for instrial Internet. Of course, self driving cars can run on roads without GPS, but their owners probably will not allow them to do so. Similarly, on a larger scale, machines can communicate on a single, centralized network of the instrial Internet, but only when there is no risk Blockchain is the core part of bitcoin technology. Its function is simple and similar to an account book, recording all transaction data. This account book: 1. It is stored on each bitcoin node of the Internet, and each node has a complete backup; 2. It records all bitcoin transfer transactions since the birth of bitcoin; 3. The ledger is stored in blocks, and each block contains some transaction records. Each block will record the ID of the previous block, forming a chain structure, which is called blockchain; 4. When you want to initiate a bitcoin transaction, just broadcast the transaction information to the P2P network, record your transaction information as a new block and connect it to the blockchain, and the transaction is completed
blockchain has stimulated the revolution in other places
of course, blockchain has promoted the development of e-commerce in the financial instry. But digital information packets are discrete assets like money, and blockchain can create digital records of their existence and transmission. The technology is essentially a unified ledger of records or digital events. The ledger is distributed in the network and shared by different parties, and can only be updated by the majority of these parties. Once a ledger item is created, it can never be erased
blockchain is the missing link in the revolution, because the e-commerce it inspires will define the trust between machines and stakeholders. For example, Volkswagen's recent emissions scandal. VW's tests show that its vehicles emit too much NOx, so it chooses to hide the problem to avoid subsequent inspection
although blockchain will not prevent machines or people from tampering with data, it will create transparent, shared and indelible documents about the original emission data. If this data has been created and shared through the blockchain system, Volkswagen will never embark on the road of fraud, because the difference between the two data sets is obvious
the benefits of iiot are obvious. We have developed machine to machine communication technology; Now, it's the standardization challenge between society and the next revolution. This has driven the development of database technology in the past 30 years, and we have finally seen the momentum of construction
the first mock exam is different from the other enterprises, but if we all want to benefit from the high efficiency brought by the fourth instrial revolution, we must adopt the single mode of machine to machine electronic commerce. And because the communication network has to operate commercially between voluntary participants, we have to integrate the blockchain into this system. In the need to constantly modify the data, and free information trade needs detailed environmental conditions, blockchain is the best path to a new instrial revolution.

7.

China has started to establish a national standard for blockchain to promote the construction of blockchain standard system from top-level design, which is expected to be completed by the end of 2019 at the earliest

in this regard, Zhao Wu, founder of Beijing Huashun Xin'an Technology Co., Ltd., also said that although the blockchain has disruptive technology potential, we must realize that the blockchain is still in its infancy, far from reaching the stage of subverting the world

Yu Kequn stressed that the independent and controllable blockchain network is intended not to be controlled by others technically, but also to promote the healthy development of blockchain. Security is the future life of blockchain. Only its own security can make blockchain technology landing. This requires us to pay equal attention to the development of blockchain technology and its security attributes, even ahead of time

in this regard, Li Ming also said that an important part of the standard is the information security standard, which can also see the importance of security to blockchain technology. He also pointed out that the development of blockchain standards does not mean that it will rapidly promote the development of the instry, but give the instry certain guidance. Previously, China has suffered a lot in terms of international intellectual property rights and standards. In terms of blockchain, China has formed more than 200 patents in terms of international blockchain, and even stands in the forefront of world technology. Therefore, we also need to firmly grasp our right to speak

content source: Xinhuanet

8. It is reported that the fourth Wanxiang blockchain global summit will be held in Shanghai from September 11 to September 12. On the 12th, the general manager of Minsheng health will give a keynote speech around the innovation of "blockchain + Internet insurance"
in any case, at the summit last year, Cheng Yu, general manager of Minsheng Health Insurance Division (hereinafter referred to as "Minsheng health") expressed such a view around blockchain: "blockchain technology will be useless if it leaves the design of business architecture by business personnel." This year's summit has not started, and the details are not clear.