Ethereum enters Zhejiang University

1.

Ten instry application scenarios of blockchain are listed on Oracle's website, including finance, proction, ecation, media, entertainment, government, retail business, health, medical care, supply chain, insurance and public utilities. Is it very tall? But what I want to say is that these application scenarios, in front of real high-energy blockchain applications, can only hide in the corner and shiver

now the real high-energy application scenario of blockchain is Ponzi application, commonly known as "Ponzi scheme". It is a smart contract type Qianbao, a blockchain game for rolling in and out of money, an ICO for trading, and a global pension platform

Ponzi scheme is one of the oldest application scenarios of our human beings. After Internet plus, the Ponzi scheme has upgraded the Internet + "Internet plus Ponzi scheme". The Internet enabled the Ponzi scheme, so there was an event similar to the 10 billion level of Qianbao. Before the Internet era, there were few Ponzi schemes on such a large scale. They were enabled through the Internet, and paid through mobile app. Finally, they rolled for several years and reached the 10 billion level

the Internet has broken the geographical restrictions, physical restrictions, capital flow restrictions and communication restrictions. As long as you have a mobile phone, you can play Qianbao app. Everyone participates in it, everyone gets into the money, and everyone gives out the money. According to the data of the people involved, it has reached the level of one million. Relatively speaking, the online pyramid scheme (Ponzi scheme 1.0), which still stays on the top of the list, has meetings every day, can't stop brainwashing, and uses violence and illegal means. It's simple and weak. With the rise of blockchain technology, the Ponzi scheme enabled by "blockchain +" can no longer be described as adding wings like a tiger. It is like a chicken changing into a tiger. Like the Internet, the "block chaining +" technology is a solid application to enhance the application scenario. Ponzi's fraud is further upgraded in the two generation of the Internet plus, because of the major improvement and improvement of the scene, turning into Ponzi scheme 3, whose characteristics are mainly in the following aspects:

1, centralization and no summit. The smart contract of blockchain runs automatically, and it does not need human intervention, nor can it be interrupted by human. Code rules are dead and cannot be tampered with. In terms of scene improvement, it solves the biggest pain point of Ponzi scheme for thousands of years, that is, the problem of head running away. Because the head is a program and code, the program of blockchain can exist forever, and no one can delete it. I think this is the biggest breakthrough. This virtual leader is always there. He can't run away, he can't run, he can't change. The rules will never change. He will stick to the Ponzi line for 100 years, 1000 years and 10000 years. It may be said that smart contracts can be iterated, and they can also be manipulated to leave a back door. Yes, but it can be done without iteration. Even if iteration is transparent and visible, it can be seen at a glance with a back door. This is the characteristic of the blockchain smart contract. If you cheat on it, you will get out a under the teacher's eyes. No one will participate in such a smart contract when it is online. Therefore, after technical review and verification, there is no backdoor, fair rules and irreversible smart contract, which can be realized by using blockchain technology. Such reliability, once verified, will never change. This is the certainty of the smart contract. A program or a character's code will not change. It will run one million times and one trillion times, and the result will be consistent and certain

2. The process was transparent. The number, address, account number, amount and time of deposit; Number, address, account number, amount and time of payment; All visible. Blockchain has a public ledger function, which can be viewed by everyone in the world, and the ledger data viewed by everyone is completely consistent. Why does Qianbao burst? Because we can't see his background account, how much money he goes in and how much money he comes out every day, and the details of each transaction. In this way, you can see the assessment of cashing ability before you pay in, and the assessment result is absolutely certain, that is, it will not change after you pay in

3. Complete anonymization. If you've ever heard of zero proof of knowledge. This part can be skipped. In short, some of the things we used to have in the mathematical knowledge base did not have application scenarios after many inventions. Later, it was found that it was easy to use these knowledge for anonymization. The cryptography technology in the blockchain can achieve identity hiding. As we all know, Zhihu can't achieve anonymity in a real sense in terms of technical structure, and blockchain can

The rules are open and fair to all. One yuan in gold, ten yuan in rebate. Everyone is the same rule. It will never change. If you pay one yuan, go to the front and pay for it, then the back will pay for it, and then pay for it. Fair, right? I have reflected on this many times, and I think it is fair

5. Sustainable iteration. In the low-level Ponzi scheme, the leader, proct designer, benefit distributor and benefit receiver are often four in one, while the blockchain Ponzi scheme can completely logically separate the four roles. Achieve sustainable iteration. Through collaboration based on socialization, these projects can be iterated on forever. There are now 400 senior engineers who are developing around bitcoin and constantly updating the code. These people can not know anyone. As long as the application is valuable, they can continue to iterate. Which centralized project can be achieved? Even bat level companies can't employ so many professionals scattered around the world. This kind of social iteration is not affected by the changes of a specific person or organization

"blockchain" enabled Ponzi scheme uses different range of blockchain technology, because the technology in this field is still constantly updated, and the application of smart contract has only increased in the past two years. The earliest application of blockchain is bitcoin. Some people think that bitcoin itself has the characteristics of Ponzi scheme. In 2013, I wrote a reply and implicitly pointed out that this new type of Ponzi scheme will have great lethality, because it has the characteristics of no head, open account book, no running away, open and fair rules. Later, I also found that many people around me like Ponzi scheme much more than blockchain technology. As soon as I hear that bitcoin is not a Ponzi scheme, before I start talking about blockchain technology, I usually walk away in silence. On the contrary, you tell him it's a Ponzi scheme, and then they will ask, where can I buy it? Of course, there is a lot of controversy about whether bitcoin is a Ponzi scheme, because the practical application scenarios of bitcoin have been expanding

in the ICO boom, there are a lot of air coins, such as the bogus Ponzi scheme, which has no application scenarios. The buyers probably know that these air coins are Ponzi schemes, but they buy them because the packaging is good. It is estimated that there are hundreds or thousands of such air coins. The scope of the case is all over the world, and the amount involved is more than 10 billion. These ICOS use smart contracts for subscription and distribution, and then circulate in the secondary market by themselves. In this case, there is no guarantee that the money will be paid out, and some people will lose all their money. Many people, blockchain professionals, have always wanted to draw a clear line with these applications, because although these air coins use part of the blockchain technology, they are still a centralized organization or indivial behind them. There are few network nodes, and users directly converge to a certain organization or indivial when they are paid (so they will be swept away), but there is no doubt that, Air money still uses blockchain to make money and raise funds, which solves part of the problem of running away and improves the scope and communication ability of Ponzi scheme. This is an objective situation

and from this year, with the development of technology, the Ponzi scheme, which uses smart contracts to achieve more decentralization, began to surface. Smart contract locking is used for fund in and fund out to complete a complete closed loop of fund in, fund subscription and fund out. It can already be a very pure blockchain application. Some blockchain games can freely admit that they are a Ponzi game after their release. He said: you see, the rules are transparent, the code is visible, the gold entry contract is locked, they can't run away, no one intervenes, and the gold is automatically paid. Early play, early gain. This is a key breakthrough. It's a way to publicly admit that you are a Ponzi scheme, which can't be done by Ponzi scheme 1.0 and Ponzi scheme 2.0 before. Great. It's simple and rough

this solves the major obstacles in the promotion process of Ponzi scheme, which used to rely on brainwashing, but now it depends on code. You see, "this program doesn't run on its own. There's no back door in it, right? Is the leader gone? The capture of Nakamoto does not affect the continued implementation of the program, does it Therefore, the first batch of blockchain Ponzi scams are hooked by code farmers who can understand the code, and then these code farmers stand up again and say that after technical verification, it is really such an effect, driving other people who do not read the code to join

in addition to realizing the Ponzi scheme application scenarios of entertainment, gambling and fraud, blockchain also has the opportunity to make a big show in the Ponzi scheme application scenarios involving the national economy and the people's livelihood and public utilities, which can even greatly enhance people's sense of gain and happiness, and actually improve people's life. For example, the application of national or global public pension platform based on blockchain can solve several major drawbacks of pension: fund misappropriation. The account book is open, the funds are not centralized and locked, and no one can unlock it, except the recipients who meet the rules can pay out the money. There is no possibility of misappropriation

2. Inflation. The current pension system adjusts the coefficient every year according to a series of complex algorithms such as inflation. After adjustment, the recipients are often dissatisfied because the total amount has increased, but the purchasing power has decreased. Using the feature that virtual currency can't be issued, we can control the inflation rate and ensure that we get real money

3. Unpredictable problems. It is very difficult for us to predict the pension payment after 30 years, and we can predict it in advance through smart contract. Stimulate the enthusiasm of paying

4. Policy loopholes and fairness. There will be unfairness in the diversification of groups that any pension policy faces. Everyone wants to pay less and get more, pay later and raise earlier. The transparency of blockchain is refined to each account, rather than a set of general policies to plug the loopholes in the implementation process. Everyone is the same, pay more, pay earlier, pay earlier. It can even be inherited and never lost

this has greatly reced the burden and cost of the state's pension management. What the existing pension system can do, after using the blockchain technology, can still be done, such as the state subsidies, just pay money into the contract, lock it in, there will be no fake, such as compulsory payment, and every record is real and traceable. In a word, all the existing systems and rules can be linked to the chain. On the basis of not affecting the existing effect, the efficiency and output level are improved, and fairness is guaranteed. Moreover, because the cost of the huge management system is reced, the absolute number that everyone can get may be increased by a large part. This has played a real effect on improving people's lives, and also has a positive effect

2. Lightcoin is a kind of network currency based on "peer-to-peer" technology. It is also an open source software project under MIT / X11 license. It can help users make instant payments to anyone in the world, as is the case with dcpro.

3. Blockchain mainly solves the trust and security problems of transactions, so it proposes four technological innovations to solve this problem:
(1) distributed ledger, that is, transaction bookkeeping is completed by multiple nodes distributed in different places, and each node records complete accounts, so they can participate in monitoring the legitimacy of transactions, At the same time, they can testify together
different from traditional distributed storage, the uniqueness of distributed storage of blockchain is mainly reflected in two aspects: one is that each node of blockchain stores complete data according to block chain structure, while traditional distributed storage generally stores data in multiple copies according to certain rules. Second, the storage of each node in the blockchain is independent and has the same status, which relies on the consensus mechanism to ensure the consistency of storage, while the traditional distributed storage generally synchronizes data from the central node to other backup nodes[ 8]
no single node can record the account data separately, so as to avoid the possibility that a single bookkeeper is controlled or bribed to record false accounts. In theory, unless all the nodes are destroyed, the accounts will not be lost, so as to ensure the security of the account data
(2) asymmetric encryption and authorization technology, the transaction information stored on the blockchain is public, but the account identity information is highly encrypted, which can only be accessed under the authorization of the data owner, thus ensuring the data security and personal privacy
(3) consensus mechanism is how to reach a consensus among all accounting nodes to determine the validity of a record, which is not only a means of identification, but also a means of preventing tampering. Blockchain proposes four different consensus mechanisms, which are suitable for different application scenarios and achieve a balance between efficiency and security
the consensus mechanism of blockchain has the characteristics of "the minority is subordinate to the majority" and "everyone is equal", in which "the minority is subordinate to the majority" does not completely refer to the number of nodes, but also can be the computing power, the number of shares or other characteristics that can be compared by computers“ "Everyone is equal" means that when the nodes meet the conditions, all nodes have the right to put forward the consensus results first, and then directly recognized by other nodes, and finally may become the final consensus results. Taking bitcoin as an example, the workload proof is adopted. Only when more than 51% of the accounting nodes in the whole network are controlled can a nonexistent record be forged. When there are enough nodes in the blockchain, this is basically impossible, thus eliminating the possibility of fraud.
(4) smart contract, which is based on these trusted and tamperable data, can automatically execute some pre-defined rules and terms. Take insurance as an example. If everyone's information (including medical information and risk occurrence information) is true and reliable, it is easy to carry out automatic claim settlement in some standardized insurance procts

4. Beijing fire coin World Network Technology Co., Ltd.
fire coin network generally refers to Beijing fire coin World Network Technology Co., Ltd.

Beijing digital currency trading company
Beijing fire coin World Network Technology Co., Ltd. is a digital currency trading company, founded by Li Lin in Beijing on May 1, 2013. On April 4, 2014, huoyuan.com won a round of tens of millions of RMB investment from Sequoia Capital, the top venture capital institution on Wall Street. On August 5 of the same year, fire coin acquired bitcoin wallet "fast wallet" and qukuai.com<

Chinese name
Beijing huoyuantianxia Network Technology Co., Ltd.

foreign name
Huobi Technology Co, Ltd.

headquarters location
Liangsheng building, Middle Road, Xierqi, Haidian District, Beijing

business scope
digital currency transaction

founder
Li Lin

total transaction volume
200 billion yuan (as of 2016)

all authoritative information
legal representative
Li Lin

business status
in business


registered capital
100

registration time
December 18, 2013

registered address
the first floor of 29b building, No.11 anningzhuang Road, Haidian District, Beijing The above information is provided by tianyancha

94% of the people have also seen the
China coin exchange
blockchain news platform
reliable and profitable blockchain app
Company Profile
fire coin is committed to building a safe bitcoin trading platform, and the team has many years of financial risk control experience. The core members graated from Tsinghua University, Peking University, Fudan University and other domestic famous universities, and came from domestic Internet and financial enterprises such as Goldman Sachs, Internet, Oracle, Tencent and Alibaba

in April 2015, fire coin set up fire coin blockchain Research Center, and established "digital asset research project" with Internet Finance Laboratory of Wukou School of finance, Tsinghua University (former Graate School of central bank) [1]. In July 2016, together with the Internet Finance Laboratory of Wukou College of Finance and sina science and technology, huobi.com released the 2014-2016 global bitcoin Development Research Report [2]. In the same month, the fire coin blockchain research center and the Mechanical Instry Press published the book "blockchain: defining the new pattern of Finance and economy in the future" [3]<

Proct Introction
flash player: a short-term trading tool tailored for traders. It provides 250 real-time transaction records per second for 20 outlets, 0-delay flash trading, supports split screen display of trading window and quotation window, and allows users to analyze quotation chart

hotcoin app: an app with comprehensive functions in bitcoin instry. A bitcoin trading app providing registration, recharge, trading, cash withdrawal and information integration services. This app has a price reminder function<

organizational structure
Li Lin
founder and chairman

Mr. Li Lin is the founder and chairman of fire coin and the promoter of global digital currency trading. Since the establishment of fire coin, he led the team to develop fire coin into a leading digital currency trading platform in the world. By the end of 2016, the accumulated trading volume was RMB 200 billion. Before the founding of fire coin, Mr. Li Lin worked in Oracle Asia Research Center and served as a R & D Engineer; In 2009, we founded the social proct Youyi based on MSN; In 2010, the second largest independent group buying search company in China was founded. Mr. Li Lin led the team to break the instry records repeatedly, and has rich experience in Internet Finance entrepreneurship and team management<

Du Jun, co-founder and director

Mr. Du Jun is the co-founder and director of fire coin, and a world-famous digital asset investment and manager. Prior to the establishment of fire coin, Mr. Du Jun worked in Kangsheng chuangxiang, a well-known community software company, and successively served as marketing director, operation director and proct manager; After Tencent acquired Kangsheng chuangxiang, it became its core proct Discuz! Proct leader, lead Discuz! Proct design of X series and Application Center. Mr. Du Jun has outstanding performance in marketing, operation, creativity and other fields.

5. Legal currency is to use legal currency to trade, there is no handling charge, but there is a business premium (the selling price is high, the price is low). Currency transaction is to use legal currency to buy digital currency to carry out direct transactions between digital currencies, but currency transaction has handling charge. According to my experience, I will use currency, because the handling charge is less than that of legal currency transaction
fire coin, coin safety and OK are OK. Of course, I have arranged them in order according to the recommended index I gave you

6. EPA (Environmental Protection Agency)
Environmental Protection Agency

EPA
n. engineering practice revision

EPA
EPA: the abbreviation of Environmental Protection Agency, U.S. Environmental Protection Agency
epa-epa
EPA: short for Environmental Protection Agency, U.S. Environmental Protection Agency. EPA announced the "Energy Star" plan in 1992, which received positive response from the international community. As long as you start the computer, you can see the sign of "Energy Star" on the screen in a few seconds. The goal of energy star is to automatically enter the low power consumption state when the various components of the computer system are not active. When the initiative of the components is restored (that is, when the keyboard, mouse, etc. are used), the computer system will automatically return to the fully awake state. For procts that meet the energy star specifications, EPA will issue the energy star logo "EPA pollution present", which means "anti pollution energy-saving procts recognized by the U.S. Environmental Protection Agency"< Economic partnership agreement http://www.hudong.com/wiki/EPA

7.

As a student who has been studying in Tongji University for six years and will continue to study, I would like to give an unsolicited answer:

according to the qs2019 ranking of Chinese universities, the top five universities are Tsinghua University, Peking University, Fudan University, University of science and technology of China and Zhejiang University. Tongji University is ranked in the 12th

Therefore, if you happen to be interested in European culture, especially German culture, you will have more opportunities to communicate in Tongji. I hope my answer will help you!:)

8.

Here's the ranking of computer science and Technology Postgraate Entrance Examination schools in 2017.

a total of 100 graate schools in China participated in the ranking.

among them, Tsinghua University ranked first, University of national defense science and technology ranked second, and Peking University ranked third,

the following is the specific list of computer science and Technology Postgraate Entrance Examination schools:

better universities: Tsinghua University, University of national defense science and technology, Peking University, Beijing University of Aeronautics and Astronautics, Harbin Institute of technology, Shanghai Jiaotong University, Zhejiang University, Nanjing University, etc

There are many majors related to computer network, Taking Tsinghua University as an example,

such majors include: computer system structure, software engineering, etc

9.

Peking University received 1 billion yuan personal donation legal report, Li Yongxin, founder and President of Peking University, the outstanding alumni of Peking University. Today, Peking University is the top university in the whole country. Every year, the top notch students in the whole country are admitted to Peking University, and Peking University has trained a group of outstanding students in the past, and the

has been trained by the University. It has trained generations of talents for the country

Li Yongxin was born in Jilin Province in Northeast China. He graated from the Department of political science and administration of Peking University in 1999. He is the founder and President of China public ecation group. He is the pioneer of China public examination and training, and now the president of China public ecation group. Li Yongxin, a pioneer in China's public examination and training instry, won the Sohu 60 years 60 people China Ecation Achievement Award in 2009 and the annual outstanding contribution ecation Figure Award in 2011. On March 3, 2021, his alma mater Peking University donated 1 billion yuan to establish Peking University public ecation development fund, which is the largest indivial donation since the founding of Peking University

10.

Peking University is one of the most famous universities in China. It has trained countless talents, including many famous alumni

said a few of you heard the name, the network president Robin Li, Nobel Prize laureate Tu Yo Yo, host Sa Beining.

Peking University is the originator of modern higher ecation in China. In the past 100 years, it has trained more than 1000 academicians and 12 academicians; Two bombs and one satellite; Yuan Xun, 11 winners of the highest national science and technology awards, 230 social scientists, 142 billionaires, and 87 political talents at the deputy national and ministerial levels

there are too many talents from all walks of life coming out of Peking University, almost covering elites in all fields. Today, let's talk about three of them who often appear in our field of vision

3; Xiao SA;, Sabine

“ Peking University is OK, Sabine& rdquo;

this is a funny stem, and the source of this stem is Sabine. When he said that Peking University is OK in that kind of joking tone, the word "ancestor of Versailles" followed him

As we all know, Sabine graated from the Law School of Peking University and is a standard Beida

and this little SA, who was expected to become a legal person, just changed his line and became the host of CCTV