Eth principle of virtual currency

1. Eth is a kind of digital token of ethereum, which is regarded as "bitcoin version 2.0". It adopts the blockchain technology "Ethereum", which is different from bitcoin. It is an open-source public blockchain platform with intelligent contract results, and a resonance network composed of tens of thousands of computers around the world. Developers need to pay eth to support the application. Like other digital currencies, ether currency can be bought and sold on the trading platform

warm tips: the above explanations are for reference only, without any suggestions. There are risks in entering the market, so investment should be cautious. Before making any investment, you should make sure that you fully understand the nature of the investment and the risks involved in the proct. After a detailed understanding and careful evaluation of the proct, you can judge whether to participate in the transaction
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2.

virtual currency is the currency used for electronic circulation. Now the scope of virtual currency is very large, including q-coin, bitcoin and so on. With the development of digital currency, virtual currency is becoming more and more abundant, which may become the mainstream in the future. For example, BTC, EOS, bcbot and so on are not only virtual currencies, but also algorithms, landing projects and technologies

virtual currency is mainly issued by online game service providers to purchase game props, such as equipment, clothing, etc. But at present, the use of virtual currency has gone far beyond this category. Virtual currency can be used to buy game cards, physical objects and download services of some movies and software

extended data:

real risk

as the proct of e-commerce, virtual currency has begun to play an increasingly important role, and it is more and more connected with the real world. However, with the growth of virtual currency, the relevant laws and regulations are lagging behind, which has laid many hidden dangers

fraud

the private transaction of online virtual currency has realized the two-way circulation between virtual currency and RMB to a certain extent. The activity of these traders is to buy all kinds of virtual currencies and procts at a low price, and then sell them at a high price to earn profits. With the increase of such transactions, there are even virtual mints. In addition to the virtual currency provided by the main company, there are also some people who specialize in "virtual coin making" to obtain virtual currency by playing games and then resell it to other players

Taking Wenzhou as an example, there are about seven or eight such "virtual mints" with four or five hundred practitioners. This not only creates a bubble for the price of the virtual currency itself, but also causes trouble for the normal sale of the issuing company. It also provides a platform for selling and collecting money and money laundering for various cyber crimes. p>

impact system

in modern financial system, the issuers of money are generally central banks, which are responsible for the management and supervision of money operation. As the equivalent exchange goods used to replace the real currency circulation on the Internet, the virtual currency on the Internet is essentially the same as the real currency. The difference is that the issuers are no longer central banks, but Internet companies

if the development of virtual currency makes it form a unified market, each company can exchange with each other, or virtual currency is integrated and unified, and all of them are based on the same standard and price, then in a sense, virtual currency is currency, which is likely to form a threat impact on the traditional financial system or economic operation

reference: network virtual currency

3.

They are:

bitcoin

the concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's ideas, the open source software was designed and released, and the P2P network was built on it. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system

bitcoin cash

bitcoin cash is a new version of bitcoin with different configurations launched by a small number of bitcoin developers

extended data:

virtual currency refers to non real currency. Well known virtual currency, such as network company's network currency, Tencent company's Q currency, Q point, Shanda company's voucher, Sina's Micro currency (used for micro games, Sina reading, etc.), chivalrous Yuanbao (used for chivalrous road game), silver pattern (used for bixue Qingtian game)

the popular digital currencies in 2013 are bitcoin, Leyte coin, infinite coin, quark coin, zeta coin, BBQ coin, pennies (Internet), invisible gold bar, red coin and prime currency. At present, hundreds of digital currencies are issued all over the world. Popular in the circle & quot; The legend of "bitcoin, Wright silver, infinite copper, pennies aluminum"

4. When it comes to money, mining is indispensable. In Ethereum network, if you want to get Ethereum, you also need to mine it. When it comes to mining, there must be a consensus mechanism
do you remember what the consensus mechanism of bitcoin is? The consensus mechanism of bitcoin is pow. To put it simply, the more work you do, the higher the amount of computation you pay, the more likely you will be the first to find the correct hash value, and the more likely you will be rewarded with bitcoin
however, there are some defects in the pow of bitcoin, that is, it is too slow to process transactions, and miners need to constantly collide hash values through calculation, which is costly and inefficient. Friends who are interested in blockchain knowledge should see such a saying:
in order to make up for the deficiency of bitcoin, Ethereum has proposed a new consensus mechanism, called POS (this is the abbreviation of English, which means "proof of equity", also translated into "proof of equity")
POS simply means the same as its literal meaning: equity, equity. The more currency you hold, the more equity you have, the higher your equity
Ethereum's POS means that the more money you hold, the longer you hold it, the less difficult it will be to calculate and the easier it will be to mine
in the initial setting of Ethereum, Ethereum hopes to build a relatively stable system by using POW in the early stage, then graally adopt POW + POS, and finally completely transition to POS. So, it's true that the consensus mechanism of Ethereum is POS, but POS is only a plan or goal at the beginning of Ethereum's release. At present, Ethereum has not yet transitioned to POS, and the consensus mechanism adopted by Ethereum is still pow, that is, the pow of bitcoin, but it is slightly different from the pow of bitcoin
the amount of information here is a bit large,
the first information point is that the consensus mechanism currently adopted by Ethereum is also pow, but it is slightly different from the pow of bitcoin. So, what's the difference between the pow of Ethereum and bitcoin: in short, the mining difficulty of Ethereum can be adjusted, but the mining difficulty of bitcoin can't be adjusted. Just like our college entrance examination, because the teaching situation and the number of students in different provinces are not the same, so the college entrance examination is divided into national papers and provincial independent proposition
Ethereum said that I am in favor of the topic by region. Bitcoin said: No, it must be the same volume in the whole country. The difficulty is the same for everyone
the popular explanation is that bitcoin uses computer computing power to do a lot of hash collisions, enumerate various possibilities to find a correct hash value. The Ethereum system has a special formula to calculate the difficulty of each block. If a block is verified faster than the previous block, Ethereum protocol will increase the difficulty of the block. By adjusting the block difficulty, the time needed to verify the block can be adjusted
according to the Ethereum protocol, the dynamic adjustment method of difficulty is to make the time interval of creating new blocks in the whole network 15 seconds, and the network uses 15 seconds to create blockchain. In this way, because the time is too fast, the synchronization of the system is greatly improved, and it is difficult for malicious participants to launch 51% (that is, more than half) of the computing power to modify historical data in such a short time
the second information point is: in the initial setting of Ethereum, we hope to achieve the transition from POW to
POS through phased upgrade
dating back to 2014, at the beginning of Ethereum's launch, the team announced that the launch of the project would be divided into four stages, namely, Froniter, homestead, metropolis and serenity. In the first three stages, the consensus mechanism adopts pow (workload proof mechanism), and in the fourth stage, it switches to POS (equity proof mechanism)
on July 30, 2015, the first phase "frontier" of Ethereum was officially released. This phase is only suitable for developers. Developers can write smart contracts and decentralized application DAPP on Ethereum network, and miners begin to enter Ethereum network to maintain network security and get Ethereum coins. The leading-edge version is similar to the beta version, proving whether the Ethereum network is reliable or not
on March 14, 2016, Ethereum entered the second stage of "homeland". In this stage, Ethereum provides the wallet function, so that ordinary users can easily experience and use Ethereum. There is no obvious technology improvement in other aspects, but it shows that Ethereum network can run smoothly
in September 2017, Ethereum has reached the third stage of "metropolis"“ "Metropolis" is composed of Byzantine and Constantinople. The goal of this stage is to introce the hybrid chain mode of POW and POS, so as to prepare for the smooth transition from POW to POS. This is the latest popular "Ethereum Constantinople upgrade". In the Constantinople upgrade, Ethereum will make some changes to the underlying protocols and algorithms to lay a good foundation for the implementation of POW and
POS
how much reward will Ethereum get for mining? Miners who win the block creation competition will get the following income:
1. Static reward, 5 ethereums
2. The fuel cost in the block, i.e. gas, we talked about in the last issue
3. As a part of the block, it includes the extra reward of "Uncle block". Uncle is uncle of uncle, and each uncle block can get 1 / 32 of the mining reward as a reward, that is, 5 times 1 / 32, which is equal to 0.15625 ethereums. Here, let's briefly explain the concept of "TERT block". The concept of "TERT block" was proposed by Ethereum. Why should we introce the concept of TERT block? This also starts with bitcoin. In the bitcoin protocol, the longest chain is considered absolutely correct. If a block is not part of the longest chain, it is called a "orphan block". An isolated block is a block, which is also legal, but it may be found later, or the network transmission is slower, and it does not become part of the longest chain. In bitcoin, the solitude is meaningless and will be discarded later, and the miners who find the solitude will not receive mining related rewards
however, Ethereum does not think that isolated blocks are worthless, and Ethereum system will give rewards to miners who find isolated blocks. In Ethereum, isolated blocks are called "Uncle blocks", which can contribute to the security of the main chain. Ethereum's ten second block interval is too fast, which will rece the security. By encouraging the use of tertiary blocks, the main chain can obtain more security guarantees (because the isolated block itself is legal). Moreover, paying the tertiary block can also stimulate the miners to actively mine and actively use tertiary blocks. Therefore, Ethereum thinks that it is valuable.

5. Learning experience of attending the counselor training class of Ministry of ecation

Wang

garrison

2009
year
4
month
19
day -
4
month
30
day, I had the honor to participate in the second post training class of College Counselors in Jilin Province,
sincerely thank the school for creating conditions for me,
provides me with the opportunity to learn from senior leaders and experts in this field, and creates a platform for me and other college counselors to communicate with each other<

this training course is the only one with the highest level of experts, the longest learning time, the most complete learning
content and the most activities I have participated in since I came to China.
it has benefited me a lot< The experts of the training course are Xu Yanguo, director of the ideological and Political Work Department of the Ministry of ecation,
Weng, Deputy Secretary General of Shanghai municipal government,
tie Hui,
professor of China Youth College of political science,
doctoral supervisor,
Lu Shizhen, President of the Youth Development Research Institute of China Youth College of political science,
director of China Mental Health Association, and
fan Fumin, chairman of College Students' psychological counseling professional committee,
Qing Dynasty,
professor and doctoral supervisor of China University,
Bing Zheng, professor and doctoral supervisor of Jilin Academy of Social Sciences,
Secretary General of China Ethics Society,
director of ethics and morality research center of Renmin University of China,
professor of Renmin University of China,
Wu Qiantao, professor and doctoral supervisor of Jilin University Gao Wenxin, doctoral supervisor and assistant to the president, Zhang Yanyan, deputy secretary of the Party committee of Peking University, and other senior leaders and ecation experts on the ideological and political ecation front< The contents of the study include the leaders of the general headquarters of Ideological and political work of our students explaining to us the role orientation of today's counselors, the national policy for counselors, the growth and outlet of today's counselors, etc; There are senior experts from the ecational front of colleges and universities to teach us the characteristics of contemporary youth and the methods of mental health ecation< There are some current
famous leaders of student affairs in Colleges and universities who teach us the ideological and political work in typical colleges and universities
there is an introction about the student work of the key universities of the Ministry of ecation
there is an outstanding representative of counselors working in the front line like us, the national excellent assistant director Li Qin
the training course enables us to receive all-round training in all aspects< During the training period,
we also participated in two forums and two visits to Northeast Normal University, which enhanced our communication and knowledge< Through the training, I have the following experiences, which are reported as follows:

first, I fully realized the importance of counselors' work, understood the relevant background and policies of the state in the ideological and political work in Colleges and universities, and was encouraged

Xu Yanguo, director of the ideological and Political Work Department of the Ministry of ecation, pointed out in the training, The team of counselors is the personal guard of the party and the state, and the task of counselors is to train qualified socialist builders and reliable successors<
"it's easy to get a good teacher,
it's hard to get a good teacher"
,
this sentence puts the role of counselors in the work of ecating people in a lofty position,
as a counselor, we should not only teach students to survive,
but also teach students to be human beings,
it's extremely noble to be a tutor and good teacher< As a teacher who has direct contact with students' study and life,
counselors' speech and behavior not only affect the formation of students' Outlook on life,
world outlook,
values,
but also affect the growth of students< Therefore,
college counselors must fully understand their responsibilities,
further enhance their sense of honor,
sense of responsibility and historical mission,
take on the sacred mission of cultivating excellent talents for the party and the country,
promoting the prosperity and development of the motherland< At the same time, director Xu pointed out that in order to thoroughly implement the spirit of the opinions of the CPC Central Committee and the State Council on Further Strengthening and improving the ideological and political ecation of college students and effectively strengthen the construction of college counselors,
the Ministry of ecation formulated the
regulations on the construction of college counselors on May 20, 2006, which put forward the orientation of college counselors. College counselors are both teachers and administrators, organizers, implementers and instructors of students' daily ideological and political ecation,
they are intimate friends and life mentors for the healthy growth of college students< According to the regulations, counselors should account for a certain proportion in the evaluation and employment of university teachers, the evaluation criteria should be independent, the evaluation criteria should be in line with the actual work of counselors, and the achievement identification should be flexible< Director Xu pointed out that in the future, the Ministry of ecation should organize regular training for counselors in combination with the improvement of their comprehensive quality, and organize the selection of national excellent counselors, so as to create a good platform and environment for the growth of counselors< In combination with the Ministry of ecation '
24
orders, director Xu showed us the importance, background and future development of counselors' work.
the Ministry of ecation's training for college counselors and the training for college counselors in the whole province organized by the research base fully illustrated the importance that the state and higher ecation departments attach to the work of counselors and students,
feel much more drum
dance, more energetic< Second, we should fully realize that we should improve our ability and quality to adapt to the student work in the new period. How to meet these new expectations and requirements and solve the problems existing in the current
student work is a problem that must be faced up to and urgently needed to be solved in order to do a good job of College Counselors in the new period< Through the explanation and teaching of relevant leaders and experts in the training process,
I deeply realize that the counselors in the new period are not the former nanny counselors,
fire brigade counselors and management counselors<
contemporary counselors should understand the importance of their work,
deeply understand and master the knowledge of mental health,
be familiar with the characteristics of the working group,
implement the party's major policies into the student work,
be an expert counselor,
only in this way can
have the ecational effect on students. After listening to the reports of experts, I deeply realize that
I have many shortcomings in student work
these deficiencies include,
insufficient cognition of students,
insufficient level and structure of self-knowledge,
insufficient ability to solve students' psychological problems,
insufficient ability to keep pace with the times and do a good job in students' work,
insufficient theoretical literacy. In the future work, we must face up to these shortcomings,
be determined, planned and step-by-step to supplement and improve, make up for the deficiencies, improve their ability and quality,
strive to be a qualified college counselor,
adapt to the needs of the post,
meet the new requirements and expectations of the majority of students in the new period and new stage

three, fully aware of the advanced nature of the instructor's model, and realize that there is a big gap between

training course. We invite the national excellent counsellor and the national excellent student Huang Lai daughter's counsellor
ring the training, experts have repeatedly mentioned the last national excellent counselors
Fudan University "forgive me", and I was deeply impressed by the touching deeds of the two excellent counselors<

1
, to be a conscientious person

"words of inclusion" is the epitome of the work of an ordinary college counselor, her behavior is very ordinary,
very ordinary,
it can be said that as long as a counselor who has been with students for four years, she will experience the trivial work of inclusion,
as long as she has a little sympathy and a little sense of responsibility
responsible teachers will sincerely pay for the students,
every senior
school counselor has a certain writing ability at the same time,
but why is there only one
inclusive heart language

only one inclusion? It shows that we are not living with our heart,
working with our heart
of course,
we can say that there are too many
trivial tasks that make us have no time,
especially when there are large-scale activities or important periods,
we don't even have time to sleep,
but we can't do it every day, every week, every month,
including diary,
I believe she doesn't have so much time to write diary,
what she wrote was weekly notes
this shows that inclusion is a person who has a heart of
and a heart of
life, he will certainly have a heart of work,
in order to serve the students well in his work,
lead the way<

2
, be a person without regret and selfless dedication

Li Qin put forward his theory of paratroopers in his report: if a person asks a paratrooper, you may be surrounded and arrested by the enemy as soon as you fly,
aren't you afraid? The paratrooper replied:
we paratroopers were born surrounded

- we want to be people who have no regrets,
we want to be people who give selflessly
I think it's very vivid and appropriate for counselors to
talk,
we should agree< The story of Li Qin and his classmates helping Huang Lainu and his father selflessly in his report has infected everyone,
this kind of help has surpassed the level of teachers and students,
and even the level of relatives, which shows that he has fully understood and applied the theory of paratroopers to his work practice.

6. Litecoin

litecoin (LTC), released on October 7, 2011, is the most valuable counterfeit coin at present, accounting for about 2% of BTC's market value. The current unit price is US $2.31, with a total currency value of US $38 million

this is also a distributed (decentralized) digital currency. Unlike the sha256 mining algorithm used by bitcoin, LTC adopts scrypt algorithm. Scrypt algorithm uses sha256 as its subroutine, and scrypt itself needs a lot of memory. Each hash is used as the seed of the input, and then it needs a lot of memory to store another pseudo-random sequence to generate the pseudo-random points of the sequence and output the hash value. In the mining of BTC (bitcoin), it is not enough to rely on simple graphics card mining (it takes about ten to dozens of days to dig a BTC with general configuration graphics card). The emergence of various expensive mining machines has raised the threshold for ordinary people to get BTC through mining, while LTC has certain advantages in using PC graphics card mining This passage comes from Zhihu.)

compared with BTC, litecain has made a little improvement in technology. If BTC is gold now, LTC is silver for the time being

the biggest advantage of litecoin is that it can confirm the authenticity faster. The virtual currency is designed and maintained by Charles Lee. Bitcoin transactions need to be verified, and the average verification time is more than 10 minutes. Most transaction websites need 1 hour to verify. The average transaction confirmation time of liteoin is 2.5 minutes. Developers claim that shortening the verification time increases the practicability of virtual currency. The bitcoin mining efficiency of customized machine and AMD GPU is the highest, making it almost unprofitable for miners using CPU mining. Litecain's mining excludes GPUs and custom processors, so it doesn't rely too much on a small number of professional miners

ppcoin

ppcoin (PPC) was released on August 19, 2012, which has improved the original technology of BTC. Use proof of make and add the concept of coin age

ppcoin is a bifurcated project of bitcoin, which aims to achieve energy efficiency and maintain the best performance of the original bitcoin as far as possible. The unit price of ppcoin is US $0.22 and the total currency value is US $4 million

ppcoin does not have a fixed upper limit of money supply, but it does not mean that ppcoin has obvious inflation compared with bitcoin. Bitcoin can be compared to gold. The annual inflation rate of gold is about 1-3%. Although gold has no known upper limit of money supply, we still know that it is a reliable scarce commodity

ppcoin has two types of casting: work certificate and equity certificate. The coinage rate of working proof is affected by Moore's law, which depends on the doubling of our working proof ability. What we all know is that Moore's law will eventually come to an end. By then, the ppcoin of inflation may be close to the gold level. The annual maximum inflation rate of certificate of equity is 1%. At the same time, ppcoin's transaction costs were destroyed to fight inflation. So on the whole, the coin design of ppcoin is still a very low inflation design in the future, which can be comparable with bitcoin<

ppcoin's reward is similar to lottery, which will determine the winning probability according to the number of ppcoin held by miners. Sunny king, one of the founders, said that their design is based on a new concept of long-term energy efficiency

terracoin

terracoin (TRC) was released on October 26, 2012, with a total currency of 42 million. The speed of each block is 2 minutes, slightly faster than LTC. There is not much special in technology, similar to the proction of BTC halved every four years

however, the operation team seems to have a strong business background and may be better than other bitcoins in circulation. The development of virtual currency is getting more and more attention. Now some teams with business background will accelerate the development of virtual currency

namecoin

namecoin is a distributed domain name system based on bitcoin technology. Its principle is the same as bitcoin. The first release date of this open source software is April 18, 2011

namecoin is generated from an original block which is different from bitcoin's main trading block. It uses a new blockchain, which is independent of bitcoin's blockchain. Because it is based on bitcoin, the security, distribution, robustness, encryption and migration of domain names are guaranteed mathematically. You can dig bitcoin and namecoin at the same time

this project was discussed and proposed by bitdns, which is mainly dissatisfied with the defects of DNS. The only top-level domain name of namecoin is. Bit. It costs namecoin to register a. Bit domain name.

7. Bitcoin is BTC and eth is Ethereum
the concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was officially born on January 3, 2009 [1]. According to the idea of Nakamoto, the open source software is designed and released, and the P2P network on it is constructed. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system
Ethereum is an open source public blockchain platform with smart contract function, which provides decentralized Ethereum virtual machine to process point-to-point contract through its special cryptocurrency ether (ETH)

warm tips:
1. The above information is for reference only, without any suggestions
2. According to the notice on preventing the financing risk of token issuance, there is no approved digital currency trading platform in China. According to the regulation of digital currency in China, investors have the freedom to participate in digital currency transactions at their own risk
response time: February 1, 2021. Please refer to the official website of Ping An Bank for the latest business changes
[Ping An Bank I know] want to know more? Come and see "Ping An Bank I know" ~
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8.

Last week, a paragraph about bitcoin became popular:

bitcoin broke through 5800 US dollars (about 38280 yuan) . When it was issued in 2009, 1 US dollar was equivalent to 1300 bitcoins. What is investment? It has increased by 7.54 million times in 8 years. At that time, you spent 38000 yuan to buy some bitcoin. Now you are the richest man in China, surpassing Xu Jiayin, who has 290 billion yuan

but just one week later, on October 20, bitcoin broke through the $6000 mark. Although it fell later, it reached more than $6000 again on October 21, reaching a maximum of $6147. In terms of $6000, bitcoin prices have risen 7.8 million times in eight years

according to cryptocompare, a bitcoin data provider, e to China's strict supervision of cryptocurrency trading, the global share of bitcoin market has been greatly changed. Now, in the total trading volume of the world's bitcoin exchanges, the trading volume of RMB versus bitcoin accounts for about 1.6%

} the proportion of RMB and yen in global bitcoin trading volume (photo source: cryptocompare)

the reporter noted that in the first half of this year, after Japan's legislation recognized bitcoin as a legal payment method, bitcoin's trading volume in Japan surged, and Japanese regulatory authorities have issued certificates to 11 cryptocurrency exchanges. About 58% of bitcoin trading currently takes place in the Japanese market, and nearly a third of yen to bitcoin trading takes place on the bitflyer exchange in Tokyo. In addition, the U.S. and South Korea markets also account for a large part of global bitcoin transactions - the U.S. dollar and the Korean won account for 27% and 7% of the total bitcoin transactions, respectively< br />