Blockchain materials people's daily

1.

We need to establish data layer, network layer, consensus layer, incentive layer, contract layer and application layer

1. The data layer encapsulates the underlying data blocks and related basic data and algorithms such as data encryption and time stamp

2. The network layer includes distributed networking mechanism, data transmission mechanism and data verification mechanism

The consensus layer mainly encapsulates all kinds of consensus algorithms of network nodes

The incentive layer integrates economic factors into the blockchain technology system, mainly including the issuing mechanism and distribution mechanism of economic incentives

5. The contract layer mainly encapsulates all kinds of scripts, algorithms and smart contracts, which is the basis of the programmable characteristics of blockchain

6. The application layer encapsulates various application scenarios and cases of blockchain

, general secretary of the CPC Central Committee, stressed in the eighteenth collective learning of the Central Political Bureau, "block chain as an important breakthrough in core technology and independent innovation", "accelerating the development of block chain technology and instrial innovation". <

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the forward-looking judgment of the CPC Central Committee has brought the "blockchain" into the public view and become the common focus of financial capital, real economy and public opinion

from network power to big data, from media integration to blockchain, the Politburo of the CPC Central Committee has collectively studied and aimed at the forefront of technological change, showing the direction, foresight and foresight of the CPC Central Committee, leading the pace of China's instrial change and economic transformation. This collective study of the Political Bureau of the Central Committee of the CPC, with special emphasis on "blockchain", has opened up an imaginary space for the development and application of blockchain

from the perspective of science and technology, blockchain involves many scientific and technological issues such as mathematics, cryptography, Internet and computer programming. From the perspective of application, in short, blockchain is a distributed shared ledger and database, which is decentralized, tamper proof, traceable, collective maintenance, open and transparent

these features ensure the "honesty" and "transparency" of the blockchain, and lay the foundation for creating trust in the blockchain. The rich application scenarios of blockchain are basically based on the fact that blockchain can solve the problem of information asymmetry, and realize the cooperative trust and concerted action among multiple agents

2. Blockchain technology, also known as big data, can provide effective information data and resources for decision-making organs to make correct decisions, and promote scientific and democratic decision-making
the channels concive to citizens' political participation are more convenient and smooth, and citizens' rights to know, participate, express and supervise are guaranteed. Promote the development of socialist democratic politics
it is concive to strengthen the supervision of state organs and staff through blockchain technology. We should urge them to change their functions and better safeguard the interests of the people
it's not easy to summarize. I hope you can adopt it.

3. The original text is as follows:
with the upgrading of payment methods, we can eat, take a taxi and go to the supermarket without cash. The amount of cash needed in circulation is getting smaller and smaller. Can we replace paper money with a virtual digital currency? This is not a whim. The central bank recently said that the research on digital currency has achieved phased results, striving for the early issuance of digital currency. If the digital currency is successfully issued, it will not only make people's living and payment more convenient, but also increase the transparency of economic transaction activities for the country. So, how far is digital currency from us< Not long ago, the people's Bank of China revealed that a special research team had been set up in 2014 to conct in-depth research on digital currency issuance and business operation framework, key technologies of digital currency, issuance and circulation environment, etc
what is digital currency? Many people may be unfamiliar with this. There is no official definition of digital currency. According to the instry, the digital currency referred to by the central bank should be the electronization of RMB. At present, people's daily third-party payment behaviors such as bank transfer and yu'ebao are all related to digital currency. Digital currency in a broad sense includes unofficial virtual currency, such as bitcoin, which was popular before
here we also need to mention a new term called "blockchain technology", which is a new technology of the Internet. Digital currency is supported by blockchain technology, which is characterized by "decentralization", that is, taking away the centralized control of an institution over the issuance of currency. Yu Fenghui, a financial critic, said that the trust problem in the virtual economic system can be solved through blockchain technology. Taking bitcoin as an example, it is not issued by a specific monetary institution, but is generated by the transaction volume of network nodes, and is single, traceable and traceable after it is put into circulation. All funds are very transparent where they come from and where they go
a more familiar form of digital currency should be electronic RMB, which has infiltrated into various consumption scenarios of electronic payment. There is no need to repeat the impact and subversion of electronic payment on our lives. Credit card payment and code scanning payment have greatly reced the space for the use of paper money. It can be seen that the progress of technology has graally forced the withdrawal of paper money
the new favorite of the financial system
the attitudes of all countries towards digital currency are changing. It is reported that DNB, Norway's largest bank, recently called on the government to stop using cash completely. In fact, several banks in Norway have closed some branches' cash business. Only three branches of DNB have counter cash business. Other Norwegian banks are also phasing out cash transactions. According to statistics, only 6% of Norwegians still use cash every day, most of them are the elderly
not only Norway, but also the world is moving towards the era of digital currency. According to Xiao Lei, chief researcher of gold wallet, many institutions, including Nasdaq Stock Exchange, Goldman Sachs and modern, began to invest in the research because of the continuous impact of digital currency represented by bitcoin on the world financial system. It is found that the blockchain technology used in digital currency can bring convenience and rece costs to many institutions, and there are cases that can be applied to the real economy. This gives more countries and institutions the incentive to invest in blockchain technology and digital currency
in China, some institutions have shown great interest in it and invested in research. It is understood that Alibaba Finance announced that it may provide a cloud service platform based on blockchain technology
digital currency is sought after and favored because there is no real "world currency" in the current global market. It is understood that although the US dollar is currently the most widely used currency in the world, not every country readily accepts the US dollar as the world currency. Xiao Lei said that the world currency should be like gold, with the characteristics of "de nationalization". Digital currency can even be regarded as gold in the gold standard era, and is expected to become the "general equivalent" in the Internet era in the future
the application space is broad
it is not difficult to see that digital currency is highly expected. Instry insiders said that once digital currency comes out, it will be applied to many fields
from a national perspective, the "trace" and "traceability" of digital currency can improve the convenience and transparency of economic transactions. Yu Fenghui said that money laundering, tax evasion and other criminal activities are expected to decrease. At the same time, with the application of blockchain technology, a unified account book will be established nationwide and even worldwide, so that every sum of money can be traced, every transaction can be traced, tax evasion and money laundering will be within the scope of supervision, and it is even possible to realize automatic tax dection on the card machine
for the central bank, digital currency can rece the high cost of traditional paper money issuance and circulation, and solve the problem of currency over issuance and inflation caused by the central bank's centralized control of currency issuance right. Bai Chengyu, Secretary General of China microfinance Union, said that digital currency can generate a certain amount of transaction volume according to the transaction demand of real economy generated by the public in the transaction process“ This form of digital currency may be automatically generated by the blockchain system and issued according to the transaction volume, which can avoid the inflation caused by over issuance. "
in addition, digital currency helps to build a new financial infrastructure. For example, digital currency will make the credit accumulation and archives of all people traceable and accessible, which is of great significance to promote the construction of credit system. Yu Fenghui said that after the promotion of digital currency, from the perspective of social credit accumulation, enterprises and consumers will tend to use digital currency and swipe cards for consumption, because electronic transactions have data traces, which can accumulate the credit of enterprises and indivials, which will become the basis for obtaining financial services such as banks< In addition to helping the state to regulate and improve the financial system, digital currency is closely related to people's life. It is not only the convenient payment that people have felt, but also reflected in many aspects
first of all, it is very difficult to have counterfeit money in the market. According to Bai Chengyu, one of the characteristics of blockchain is transparency. The issuance of digital currency needs to be certified, so it is difficult to forge
as well as counterfeit money, there should be the problem of plundering the wealth of people and enterprises in local areas, which will be fundamentally solved by digital currency. Bai Chengyu said that compared with the previous state's decentralization of poverty alleviation funds to local governments, some governments have the phenomenon of "evasion", which leads to the fact that some poverty alleviation objects can not get the funds“ At the beginning, it was cash distribution, and later it was bank transfer. However, there was a problem that there were not many bank outlets in some remote areas, and people had to walk a long way to get money. If there is a digital currency, there is no need to withdraw cash for consumption and payment, and it will be easier to monitor capital flow. "
moreover, the use of digital currency will rece financial transaction costs. Bai Chengyu said that before, the inter-bank settlement of banks had to charge service charges, because the settlement center required each bank to keep a part of the capital to balance its position. This part of the capital occupied the bank's funds, and the bank would spread the cost to the people, that is, to charge for the inter-bank settlement business. The "decentralized" payment and clearing system under the blockchain technology will facilitate the settlement between banks and further rece the transaction cost of people's payment
the next step of "de centralization" is "de intermediation", which will simplify many current financial business proceres, such as foreign exchange. Bai Chengyu said that previously, foreign exchange clearing had to go through banks and other clearing institutions, which increased the exchange cost and time interval. Now, the international community has tried to use blockchain technology to develop a new international currency exchange system, which can realize the "de centralized" exchange of currency and "de intermediary" in the future
resistance to implementation
although many countries and institutions are actively developing digital currency and blockchain technology, and people are full of expectations for it, even if digital currency is really issued, it will still face some resistance to implementation
technically, because blockchain is an Internet technology, "hacker" risk is taken into account. The bigger problem, though, is control. Many people in the instry said that bitcoin is essentially different from the digital currency to be launched by the central bank. Bitcoin is not issued by a specific monetary institution, and the relevant financial supervision has not been followed up, so there is a large capital risk. However, the digital currency to be launched by the central bank this time belongs to the official currency and is protected by the central bank. Because bitcoin is not uniformly issued by the central bank, it has not been recognized by many countries. The central bank values whether digital currency is controlled or not
in addition, as mentioned above, even as a leading country in digital currency promotion, Norway still has 6% of the elderly people who are difficult to get rid of paper money, which is undoubtedly a problem that can not be ignored by all countries. Xiao Lei said that digital currency will first be targeted at young people and promoted in some areas. It will not turn all the money in the cash flow into digital currency. This needs to consider the coordination between digital currency and paper money and people's willingness to use them
there is bound to be an adaptation process from paper money to digital currency, and the road of its reform will be very long, but it can be seen that digital currency will inevitably form a development trend. Bai Chengyu said that technological innovation will overcome the problems in reality, just like going to a bank to do business now. If it does not involve cash, the lobby manager will recommend customers to ATM and other self-service equipment. This is a good proof that technological innovation has replaced labor in the past. Now the application of mobile phone is also very simple. It can be predicted that the technology will continue to update in the future. The use of electronic channels, digital currency and other procts in the new era will become a trend
Beijing Business Daily reporter Liu Zexian Cheng WeiMiao
of course, the central bank's digital currency is different from bitcoin, wikilink, bitcoin cash, Ethereum and other digital currencies on the market. The central bank's digital currency has the property of currency.

4. The subversive characteristics of blockchain lie in the following four aspects: first, transparency. The data record of the blockchain system is transparent to the nodes of the whole network, and the update operation of the data record is also transparent to the nodes of the whole network, which is the basis of the trustworthiness of the blockchain system. Because the blockchain system uses open source programs, open rules and high participation, the data records and operation rules of the blockchain can be reviewed and traced by the nodes of the whole network, with high transparency< Second, openness. The blockchain system is open. In addition to the fact that the private information of the parties directly related to the data is always encrypted, the data of the blockchain is open to all (except the blockchain system with special permission requirements). Anyone or participating nodes can query blockchain data records or develop related applications through the open interface, so the information of the whole system is highly transparent< Third, information can not be tampered with. Once the information of the blockchain system is verified and added to the blockchain, it will be permanently stored and cannot be changed (except for private blockchain systems with special change requirements). Unless more than 51% of the nodes in the system can be controlled at the same time, the modification of the database on a single node is invalid, so the data stability and reliability of the blockchain are extremely high
Fourth, decentralization. Decentralization is the most basic feature of the blockchain, which means that the blockchain no longer depends on the central processing node and realizes the distributed recording, storage and updating of data. In the traditional centralized network, attacking a central node can destroy the whole system, while in a decentralized blockchain network, attacking a single node cannot control or destroy the whole network. More than 5% of the nodes in the master network are just the beginning of gaining control. 2019 is the first year for the commercial application of blockchain technology, and the stimulation of favorable policies will make the development of blockchain technology more stable
with the application of blockchain technology graally penetrating into many fields such as digital finance and Internet, we have a clearer understanding of the value of blockchain
blockchain has formed a situation of global competition, and all countries are seizing the development opportunities, let alone China; Therefore, there is no doubt that blockchain has become a national strategy.

5.

According to experts, blockchain can be understood as a distributed public ledger, which is connected by various blocks into a chain. In the traditional bookkeeping system, the bookkeeping right is controlled by the central server

on the "account book" of blockchain, every point in the chain can record information on it, forming a point-to-point accounting system. Therefore, blockchain technology is considered as a decentralized technology

For example, in a village of 100 people, Zhang San bought a cow from Li Si and paid him 10000 yuan. In the past, he had to rely on Zhao Liu, a middleman, to transfer his 10000 yuan to Li Si

with the blockchain system, Zhang San can directly record his 10000 yuan to Li Si's account book, and the transaction information will be transmitted to the whole village, that is, the whole blockchain system, so that other 98 people can see the information. The whole transaction process is recorded by the system, which has the advantage of traceability to prevent the loss of Zhao Liu's account book or Li Si's denial of account

extended data

in 2008, Nakamoto first proposed the concept of blockchain. In the following years, blockchain became the core component of electronic currency bitcoin: as a public account book for all transactions. By using peer-to-peer network and distributed timestamp server, the blockchain database can be managed independently

the blockchain invented for bitcoin makes it the first digital currency to solve the problem of repeated consumption. The design of bitcoin has become a source of inspiration for other applications

6. In the selection of model, you can let the merchants help you introce it, or you can solve it by yourself. First, choose a crusher according to the characteristics of raw materials, cone crusher according to the hardness, and crusher model according to the required output
more information about crusher can be obtained online by consulting experts to help solve related problems.

7. Whether Yingtai tb250-btc D + motherboard uses AMD rx560d or rx580 graphics card mainly depends on the performance of CPU, which has little to do with motherboard
if it's I3 or below, it can only be equipped with rx560d graphics card, and this kind of CPU can't carry rx580 graphics card. If it is an i5 or i5 or above level CPU, of course, it should be equipped with rx580 graphics card.

8.

Blockchain technology is a modern information technology. To use this technology for governance, we must adhere to the unity of the party's leadership, the people's ownership and the rule of law, and adhere to the people-centered idea

the government must adhere to the principle of administration according to law, use power prudently, perform legal ties, and do nothing without legal authorization

The organs of state power should legislate according to law, provide legal protection and strengthen supervision

Other state organs should perform their ties according to law< br />