Global partner of blockchain

1.

However, where are the opportunities for these innocent employees? To put it bluntly, some blockchain entrepreneurs are bent on "empty handed White Wolf", and exploit layer upon layer through "deception". Using asymmetric instry information, blockchain, digital currency and other projects are over packaged, giving people a sense of "Hope". This part of the blockchain entrepreneurs' inherent "bad root", to a certain extent, has led to the instry's "sick" development trend

some blockchain entrepreneurs call for embracing the times, changes and the future, emphasizing the charm of decentralized "fairness". But in reality, it is for self-interest, which hurts the interests of job seekers and other related groups, which is a great injustice in itself

The asymmetry of information is not permanent. Blockchain, digital currency and so on are all areas worthy of attention, but they are not the capital that can be used by some entrepreneurs as unlimited squanders all the time. For the job seekers who want to join them, they should polish their eyes, otherwise they may be surprised if they are not careful

2.

The strict definition of blockchain refers to the distributed database technology that multiple nodes in peer-to-peer network jointly maintain a continuously growing list ledger constructed by time stamp and orderly record data blocks through consensus mechanism based on cryptography technology. This technical solution allows any number of nodes in the participating system to calculate and record all the information exchange data in the system in a period of time to a data block through cryptography algorithm, and generate the fingerprint of the data block for linking the next data block and checking. All participating nodes in the system jointly determine whether the record is true

blockchain is a technical solution similar to NoSQL (non relational database). It is not a specific technology, and can be implemented through many programming languages and architectures. There are many ways to realize blockchain, including pow (proof of work), POS (proof of stake), dpos (delegate proof of stake), etc

the concept of blockchain was first proposed in the paper "bitcoin: a peer-to-peer electronic cash system" by indivials (or groups) who call themselves Satoshi Nakamoto. Therefore, bitcoin can be regarded as the first application of blockchain in the field of financial payment

< H2 > [popular explanation]

no matter how big the system or how small the website is, there is a database behind it. So who will maintain this database? In general, who is responsible for the operation of the network or system, then who is responsible for the maintenance. If it is wechat database, it must be maintained by Tencent team, and Taobao database is maintained by Alibaba team. We must think that this way is natural, but blockchain technology is not

if we think of the database as a book, for example, Alipay is a typical account book. Any change of data is bookkeeping. We can think of database maintenance as a very simple way of accounting. In the world of blockchain, everyone in the blockchain system has the opportunity to participate in bookkeeping. The system will select the fastest and best bookkeeper in a period of time, maybe within ten seconds or ten minutes. The bookkeeper will record the changes of the database and the account book in a block. We can think of this block as a page. After the system confirms that the records are correct, the system will record the changes of the database and the account book in a block, It will link the fingerprint of the past account book to this paper, and then send this paper to everyone else in the whole system. Then, over and over again, the system will look for the next person with fast and good bookkeeping, and everyone else in the system will get a of the whole ledger. This means that everyone as like as two peas in the system is called Blockchain. It is also called distributed account technology. P>

as like as two peas (computer) have identical accounting books, and everyone has the same rights, they will not collapse e to the loss of contact or downtime of a single person. As like as two peas, the data is transparent and everyone can see what changes are in every account. Its very interesting feature is that the data can't be tampered with. Because the system will automatically compare, it will think that the same number of books with the largest number are real books, and a small number of books with different numbers are false books. In this case, it's meaningless for anyone to tamper with his own account book, because unless you can tamper with most nodes in the whole system. If there are only five or ten nodes in the whole system, it may be easy to do so. However, if there are tens of thousands or even hundreds of thousands of nodes and they are distributed in any corner of the Internet, unless someone can control most computers in the world, it is unlikely to tamper with such a large block chain

< H2 > [elements]

combined with the definition of blockchain, we think that we must have the following four elements to be called public blockchain technology. If we only have the first three elements, we will consider it as private blockchain Technology (private chain)

1, peer-to-peer network (power equivalence, physical point-to-point connection)

2, verifiable data structure (verifiable PKC system, non tampering database)

3, distributed consensus mechanism (Solving Byzantine general problem, solving double payment)

4 Game design of Nash equilibrium (cooperation is the strategy of evolutionary stability)

< H2 > [Characteristics]

combined with the definition of blockchain, blockchain will realize four main characteristics: decentralized, trustless, collective maintenance and reliable database. And the other two will be derived from the four characteristics  Features: open source  Privacy. If a system does not have these characteristics, it can not be regarded as an application based on blockchain technology

Decentralized: there is no centralized hardware or management organization in the whole network. The rights and obligations of any node are equal, and the damage or loss of any node will not affect the operation of the whole system. Therefore, it can also be considered that the blockchain system has excellent robustness

trustworthiness: there is no need to trust each other when participating in the data exchange between each node in the whole system. The operation rules of the whole system are open and transparent, and all data contents are also open. Therefore, within the specified rule range and time range of the system, nodes cannot and cannot cheat other nodes

collective maintenance: the data blocks in the system are maintained by all the nodes with maintenance function in the whole system, and these nodes with maintenance function can be participated by anyone

reliable database: the whole system will enable each participating node to obtain a of the complete database in the form of sub databases. Unless more than 51% of the nodes in the whole system can be controlled at the same time, the modification of the database on a single node is invalid, and the data content on other nodes cannot be affected. Therefore, the more nodes and computing power in the system, the higher the data security in the system

Open Source: since the operation rules of the whole system must be open and transparent, the whole system must be open source for the program

Privacy Protection: since there is no need to trust each other between nodes, there is no need to disclose the identity between nodes, and the privacy of each participating node in the system is protected

3. I've noted that the overall response of Shenma mining machine is good. If you need to mine, you can pay attention to it.

4. It will take more than 100000 fans to get the final gift package, because his rules are more advanced.

5. In just a few years, blockchain has developed from 1.0 era to 3.0 era. The update of each "era" has brought changes to the world. The development of blockchain can be divided into three stages from 1.0 era to 3.0 era: point-to-point transaction, transaction and transaction Smart contract and blockchain application Ecology (token economy)
blockchain 1.0 era: digital currency rate of return is the king

blockchain 2.0 era: smart contract provides infrastructure support for upper application development

blockchain 3.0: the subversion of business lies in the transformation of proction relations

all obstacles to the development of human society, Fundamentally speaking, they are all caused by "mutual distrust", especially various economic and financial crises. If human beings can solve the problem of mutual trust, then human beings will complete a very big leap forward
the development of blockchain has graally laid the foundation for this direction. Human beings are entering the era of "smart contract", which is the process of upgrading human trust mechanism. Once the smart contract is reached, human society is facing a new big upgrade. As a value creator, the value created by each indivial can be accurately recorded and the corresponding return can be obtained, There will be less and less mutual interference, and people are really moving towards independence and equality. Human civilization has evolved from "identity society" to "contract society", and blockchain is expected to lead human beings to transition from "contract society" to "smart contract society"
although blockchain has gone out of the conceptual stage, the current situation of blockchain technology development is that the underlying technology is not mature enough and the application scenarios are relatively limited. On the one hand, consensus algorithm and other core technologies of blockchain still have room for optimization and improvement; On the other hand, the processing efficiency of blockchain is difficult to meet the requirements of some high-frequency application environments in reality. Moreover, the current mainstream blockchain technology platforms are originated from foreign countries. Domestic blockchain technology service providers should patiently start from the bottom development, achieve independent and controllable technology, and strive to lead the global blockchain technology development. It still needs a certain period of time. It can be said that the whole domestic trend is waiting for the emergence of a super level blockchain project
the Xueshuo innovation blockchain Technology Workstation of Lianqiao ecation online is the only approved "blockchain Technology Specialty" pilot workstation of "smart learning workshop 2020 Xueshuo innovation workstation" launched by the school planning, construction and development center of the Ministry of ecation of China. Based on providing diversified growth paths for students, the professional station promotes the reform of the training mode of the combination of professional degree research, proction, learning and research, and constructs the applied and compound talent training system.

6. If you wear a power costume, the teleportation point will appear, and you can pass if you are a member of the Wulin League. If you are from huntian, you will die before you go up

7. Gold standard

gold standard is a monetary system based on gold. Under the gold standard system, the value of each unit of money is equal to several weights of gold (i.e. the gold content of money); When different countries use the gold standard, the exchange rate between countries is determined by the gold parity, the ratio of gold content in their respective currencies. The gold standard began to prevail in the mid-19th century. In history, there were three forms of gold standard system: gold coin standard system, gold bullion standard system and gold exchange standard system. Among them, gold standard is the most typical form. In a narrow sense, gold standard refers to this kind of monetary system< In normal circumstances, a kind of supply in the market will cause demand for it. An unnamed explanation provided by Braudel is: sooner or later, any proct will be supplied to the market, which drives the distribution of money in its proction process: it must buy raw materials, pay freight and pay wages. Sooner or later, the money distributed will reappear in the form of demand, or purchase. Make an appointment with yourself

monetarism is an economic school formed in the 1960s, which challenges Keynesianism. Its leader is Milton Friedman. He won the Nobel Prize in economics in October 1976

monetarism

the core proposition of monetarism is that money is the most important in economic activities. The policy advocates that the growth rate of money issue should be kept at a constant speed, so that the indivial in the economy can have a complete expectation of inflation. This monetary mechanism is called Friedman rule. In addition, there should be no intervention in economic activities< Comparative advantage theory: David Ricardo put forward the theory of comparative cost trade (later called "comparative advantage trade theory") in his masterpiece political economy and tax principles. According to this theory, the basis of international trade is the relative difference of proction technology (not absolute difference) and the resulting difference of relative cost. Each country should focus on procing and exporting its procts with "comparative advantages" and importing its procts with "comparative disadvantages" according to the principle of "taking the most important advantage of both advantages and taking the least advantage of both disadvantages". The theory of comparative advantage trade explains the basis and gains of trade on a more general basis, which greatly develops the theory of absolute advantage trade<

the theory of comparative advantage is based on a strict theoretical premise:
1, two countries, two procts or two elements
2. There are some differences in the characteristics of national house
3, the comparative interests of different countries are static, and there is no scale economy
4. Free trade is carried out under the market structure of perfect competition, in the form of barter
5, factors of proction can flow freely within a country, but not between the two countries
6, there is no technological progress, capital accumulation and economic development< However, many assumptions of the theory of comparative advantage are too harsh to meet the economic reality. Because the assumption of complete free competition, the assumption of free flow of means of proction at home and abroad, the assumption of full utilization of resources and full employment are not in line with economic reality. Therefore, under such strict conditions, argumentation and theory can hardly be used as the guiding principles of foreign trade in the world, so the universal applicability of the theory of comparative advantage is questionable.

8. First, explain the gold standard and paper money standard
the gold standard is the gold standard, which is the monetary system with gold as the standard currency. Under the gold standard system, the value of each unit of money is equal to several weights of gold (that is, the gold content of money); When different countries use the gold standard, the exchange rate between countries is determined by the ratio of the gold content of their respective currencies, the gold price
paper currency standard, also known as "free standard". A monetary system in which the paper money issued by the state is used as the base currency. It is characterized by the fact that the state does not stipulate the gold content of paper currency, nor does it allow the exchange of paper currency with gold (silver). Paper currency circulates as the main currency and has unlimited legal compensation capacity; At the same time, the state also issued a small amount of metal coins as subsidiary currency, but the value of subsidiary currency has nothing to do with the value of metal commodity used to cast it. Since it is the privilege of the state to issue banknotes, after the nationalization of the central bank, the State entrusts the central bank to issue banknotes. The central bank issues banknotes through credit proceres, so banknotes are actually a kind of credit currency. 1、 Under the gold standard system, there will be no inflation. Every currency issued represents real gold. In this case, the exchange rates of two different monetary systems are compared by the gold content of different currencies. 2、 Under the paper currency standard system, the influencing factors of exchange rate are: 1. Balance of payments and foreign exchange reserves; 2. Interest rate; 3. Inflation; 4. The political situation; 5. The economic growth rate of a country; 6. Market view; 7. People's psychological expectation; 8. Technical analysis. Under the influence of these comprehensive effects, the market exchange rate of paper money is finally formed.