Blockchain course of Xi'an University of Electronic Science a

1.

blockchain is a term in the field of information technology. In essence, it is a shared database. The data or information stored in it is characterized by "unforgeability", "trace in the whole process", "traceability", "openness and transparency" and "collective maintenance". Based on these characteristics, blockchain technology has laid a solid "trust" foundation, created a reliable "cooperation" mechanism, and has broad application prospects

on January 10, 2019, the state Internet Information Office issued the regulations on the management of blockchain information services. In October 24, 2019, ring the eighteenth collective learning of the Central Political Bureau, general secretary Xi Jinping stressed that "block chain as an important breakthrough in core technology and independent innovation", "accelerating the development of block chain technology and instrial innovation". "Blockchain" has entered the public field of vision and become the focus of social attention

on December 2, 2019, the word was selected into the top ten catchwords of "biting words" in 2019

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Application of blockchain Finance:

since 2016, the major financial giants have also carried out blockchain innovation projects to explore the possibility of applying blockchain Technology in various financial scenarios. In particular, Puyin group took the lead in creating a "blockchain +" standard digital currency

standard digital currency refers to the process of assets identification, evaluation, right confirmation and insurance completed by a third party organization, which is written into the blockchain through careful digital algorithm to form the standard corresponding relationship between assets and digital currency, which is called standard digital currency

in order to realize the great leap forward development of blockchain finance, promote the new development of China's economy, accelerate the circulation of global assets, and realize the dream of rejuvenation that has been struggling for generations, Puyin group will hold the Guiyang strategic development ceremony of Puyin blockchain finance in Guizhou on December 9, 2016

the meeting will discuss the realization of digital circulation of assets by blockchain, the financial transaction mode of blockchain, and the application of blockchain services and social public instry. This conference will mark the beginning of the application of blockchain finance and the change and development of the new financial ecology

2. Blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. As we usually say, bitcoin belongs to the scope of blockchain
blockchain is the underlying technology of bitcoin, like a database ledger, recording all transaction records. This technology has also graally attracted the attention of the banking and financial instry because of its safe and convenient characteristics, but the state has relatively strict supervision in this field
in recent years, knowledge about blockchain has been formally introced into university classrooms, and the first course was held in the South Campus of Xi'an University of Electronic Science and technology
when it comes to blockchain training, it's generally said that it's a primary blockchain, but if you want to have a deep understanding, you need to keep learning, keep contacting this kind of instry, and slowly accumulate. You can pay more attention to the information of the founder of bitcoin, Nakamoto Tsung.

3. On the 27 day of

4, the taxpayers in Shaanxi Province can pay taxes by means of the third party payment tools provided by Alipay and WeChat, and also optimize the risk prevention through the new tax collection and management mode such as "block chain + tax". This is a series of convenient measures to improve tax revenue from the signing ceremony of optimizing the tax business environment project in Shaanxi. p>

on the same day, Shaanxi Provincial State and Local Taxation also signed a contract with Xi'an University of Electronic Science and technology and taoding group to cooperate with universities and enterprises in "proction, study, research and application", set up a team of tax experts, and carried out research on "blockchain + tax" with universities to explore a new tax collection and management mode of "blockchain + tax". Taking advantage of the advantages of blockchain technology, such as decentralized, highly transparent information, not easy to be tampered with maliciously, and data traceability, through encryption technology and tamper resistant Distributed Accounting and distributed trust system, every transaction between the seller and the buyer is recorded and verified, It can accurately restore the detailed information of the whole transaction process of a commodity from proction to consumers, and once generated, it can not be tampered with

under such a background, there will be no escape for false VAT invoices, the VAT dection chain will be more accurate and complete, and the fiscal and tax risks of taxpayers will be greatly optimized

In addition, as an important measure of "convenient tax spring action", Shaanxi Provincial Bureau of State Taxation also actively seeks cooperation with Xi'an Shunfeng Express Co., Ltd. to provide invoice online application and offline express delivery service for Shaanxi taxpayers. After the invoice application submitted by Shaanxi taxpayers is accepted by the competent tax authorities, the applicant can enjoy the welfare of "staying at home, invoice at home" only with the original and of his identity certificate as soon as the next day

4.

It means that the currency is five

as an unregulated and digital currency, digital currency is usually issued and managed by developers and accepted and used by members of specific virtual communities. The European Banking authority defines virtual currency as a digital representation of value, which is not issued by the central bank or authorities, nor linked with legal currency. However, because it is accepted by the public, it can be used as a means of payment, or it can be transferred, stored or traded in electronic form

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digital currency can be considered as a virtual currency based on node network and digital encryption algorithm. The core characteristics of digital currency are mainly reflected in three aspects:

1. Due to some open algorithms, digital currency has no issuing subject, so no one or organization can control its issuing

Because the number of algorithm solutions is determined, the total amount of digital currency is fixed, which fundamentally eliminates the possibility of inflation caused by the overuse of virtual currency

3. Because the transaction process needs the approval of each node in the network, the transaction process of digital currency is safe enough

The emergence of bitcoin poses a great challenge to the existing monetary system. Although it belongs to the generalized virtual currency, it is essentially different from the virtual currency issued by network enterprises, so it is called digital currency. This paper compares digital currency with electronic currency and virtual currency from the aspects of issuing subject, scope of application, issuing quantity, storage form, circulation mode, credit guarantee, transaction cost and transaction security

5.

Information security major postgraate entrance examination directions are:

1. Big data direction: big data direction is mainly for the management and processing of massive data, the traditional data processing mode is meaningless in front of big data because of its long processing time, so new algorithms and processing mode are needed to deal with the complex data, and the threshold of big data direction is relatively high

however, with the maturing of previous algorithms, the threshold is graally decreasing, the employment situation is relatively excellent, the combination of big data and cloud computing technology has high upper and lower limits, and its learning difficulty is not low

AI direction: AI direction is more in the exploration of theory, and there are relatively few technologies to be implemented, which also leads to its high threshold and lower lower limit compared with ordinary people. However, its subordinate technologies such as NLP, machine learning, text recognition, image recognition and so on still have good prospects, This aspect of technology professional demand is very wide, not only technology, mathematics, discrete knowledge is also its necessary subjects

for beginners, the friendliness is low, and in terms of career prospects, it tends to be algorithm analysis architecture, which has a good prospect

3. Traditional computer direction: the high dividends of Internet companies undoubtedly bring dividends to the pure software direction. However, with the saturation of middle and low-end talents, the high salary of the Internet is graally biased towards the real technical talents. The traditional computer direction can also get a good prospect, and choose the relevant direction according to personal interests, In order to have a better motivation to move forward, so as to achieve their own goals

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the postgraate entrance examination direction of information security specialty is specific to college learning, and its research direction and focus are quite different. It is worth noting that, in addition to the basic information security major, there are also majors that intersect arts, science and engineering

for example, there are computer art design, web design, film and television animation design, environmental art design and so on

The interdisciplinary majors of science and engineering include: Mathematics and applied mathematics, automation, information and computing science, communication engineering and so on. It can be seen that the computer professional learning content is very wide, and computer applications are constantly procing new majors, professional prospects are good< br />

6. Bus route: no.b108 [original No.45], the whole journey is about 14.1km
1. Walk about 210m from Wenzhou south station to BRT South Railway Station Bus hub station
2. Take no.b108 [original No.45], pass 21 stations to the Central Hospital (original No.2 Hospital) station
3. Walk about 250m to Wenzhou Central Hospital