Boca blockchain and Ethereum

1.

Ethereum is a new and open blockchain platform, which allows anyone to build and use decentralized applications running through blockchain technology in the platform. Like bitcoin, Ethereum is neither controlled nor owned by anyone - it's an open source project created by many people around the world

Different from bitcoin protocol, Ethereum is very flexible and adaptable. It's very easy to create new applications on the Ethereum platform. Anyone can use the applications on the platform safely

Ethereum is a programmable blockchain. It does not give users a series of preset operations (such as bitcoin trading), but allows users to create complex operations according to their own wishes. In this way, it can be used as a platform for many types of decentralized blockchain applications, including but not limited to cryptocurrency

in a narrow sense, Ethereum refers to a series of protocols that define a decentralized application platform. The core of Ethereum is Ethereum virtual machine (EVM), which can encode any complex algorithm. In computer science terminology, Ethereum is "Turing complete.". Developers can use the existing JavaScript and python as the model of other friendly programming languages to create applications running on the Ethereum simulator

like other blockchains, Ethereum also has a peer-to-peer network protocol. Ethereum blockchain database is maintained and updated by many nodes connected to the network. Each network node runs the Ethereum simulator and executes the same instructions. Therefore, people sometimes call Ethereum "world computer"

this massive parallel operation throughout the Ethernet network is not to make the operation more efficient. In fact, this process makes computing on Ethereum slower and more expensive than on traditional computers. However, each Ethereum node runs Ethereum virtual machine in order to maintain the consistency of the whole blockchain. The consistency of decentralization makes Ethereum have high fault tolerance, zero downtime, and can keep the data stored on the blockchain unchanged and anti censorship

Ethereum platform has no characteristics and value. Like programming languages, it's up to entrepreneurs and developers to decide what to use. However, it is clear that some application types benefit more from the functions of Ethereum than others. Ethereum is especially suitable for those applications that automatically interact directly between points or promote group coordination activities across networks

for example, coordinate the application of point-to-point market, or the automation of complex financial contracts. Bitcoin enables indivials to exchange money without the help of financial institutions, banks or governments. The impact of Ethereum may be more profound

in theory, any complex financial activities or transactions can be automatically and reliably carried out on Ethereum with coding. In addition to financial applications, any application scenario with high requirements for trust, security and persistence, such as asset registration, voting, management and Internet of things, will be affected by Ethereum platform on a large scale

2. Wanrong chain is a hot spot.

3.

1. about the variability of blockchain

2. eth, if most people agree to modify the chain, that is, variability, then they can modify the blockchain records and contracts

3. etc, blockchain records and contracts can't be modified, that is, they can't be tampered with

4. here are the advantages and disadvantages of the two methods

   The advantage of

5. variability is that people can make timely changes to make the right decisions. Therefore, modifying the specification is more practical than finding loopholes

6. non modifiability means that no matter how smart people are at that time, it is impossible not to make mistakes. Therefore, when problems arise in this scheme, it is best to find and solve the loopholes through the existing legal framework

7. differences in development

8. eth, whether it is intentionally arranged or since its birth, the core decisions of blockchain are made by Ethereum foundation with the participation of the community and most of them are developed by it

9. etc, the decision-making of blockchain is mainly decided by the feedback of three loose, collaborative teams with community participation

10. in any case, anyone can put forward improvement suggestions for the two kinds of blockchains. This is the benefit of open source, and it is also very common. You will find that developers of the two chains communicate with each other through GitHub and reddit. I hope to improve the frequency of communication in order to achieve the common goal

11. about compatibility

12. at present, the two kinds of blockchains are compatible with each other. Contracts or applications written by eth can be applied on etc, and vice versa

13. eth, focusing on ewasm, is committed to providing a platform for more and more developers, while the issue of contract security is secondary, such as viper

14. etc focuses on making developers create more secure contracts, such as viper, iohk research, at the cost of consuming the number of potential developers

15. it's obvious that both chains can accept each other, regardless of whether their wishes are the same or not. My view is that the number of developers is not necessarily related to the quality of the proct

16. about the transaction speed

17. eth, the average is 25 seconds, which will be shortened after upgrading

18. etc, with an average time of 14 seconds, maintained at 10-14 seconds after upgrade, according to ecip-1010 and ecip-1036 protocols

19. about the block capacity

20. eth, with the daily trading volume of eth graally reaching 5 million, the block capacity is graally saturated. This situation is similar to the recent transaction cost of bitcoin. This problem can be solved by expanding the block capacity by increasing the default fuel limit

21. ETC­， At present, there is still a lot of room for block capacity. As more and more people accept etc, the block capacity will also increase, just like eth

22. about community

23. eth, mainly discuss on reddit

24. etc, mainly discuss on slack

25. about monetary policy

26. eth, the planned supply is growing steadily, resulting in an average inflation of 3% in eth blockchain in its life cycle

27. etc, before 2025, inflation will reach 3%, and then the total supply will reach 200 million etc, and then there will be deflation

    As for the regional distribution of trading volume, China accounts for 20%, South Korea 25% and the United States 25%
    In etc, China accounts for 50%, South Korea 25% and the United States 10%
    About securities, at present, investors do not have the option to trade securities. Recently, one of eth's ETFs, trading open-end index funds, was denied by the regulators

28. etc owns etc trading trust, which allows investors to own etc instead of the asset itself

4. Ethereum has established a programmable and Turing complete blockchain. On this blockchain, you can realize the proction of all kinds of digital assets through a simple program, and you can also accurately control the status of the blockchain assets circulating on Ethereum by writing a program, such as whether the asset is to be paid or locked or has a quota, whether the account is a treasure list or a white list Ethereum and other digital assets, etc. At the same time, Ethereum is a programmable, flexible and complete blockchain network foundation. On this basis, we can realize more functional procts of non regional fast chain assets. For example, I use Ethereum to set up smart contracts, which can be applied in personal daily economic life and enterprise economic activities. Ethereum is a new and open blockchain platform based on the concept of blockchain and blockchain assets. It allows anyone to build and run decentralized applications on the platform by using blockchain technology. In short, Ethereum technology is blockchain technology plus smart contract.

5. Ethereum is a kind of virtual currency, fire money network is operating virtual currency, also operating Ethereum, this is the relationship.

6. Hello, the unified recruitment of the people's Bank of China started in October 2019 is the recruitment of the people's Bank of China in 2020. The recruitment that will start in October 2020 is called the recruitment of 2021 It is calculated according to the entry time)
the content of the unified recruitment examination of the people's Bank of China, the examination for economic and financial posts: business test + economic and financial, and the examination for other posts: business test + application. The salary is generally slightly higher than that of local civil servants
the following is the announcement of unified recruitment of the people's Bank of China in previous years. You can refer to the conditions for application.
the people's Bank of China organizes and implements the recruitment (Recruitment) of personnel of branches and directly affiliated units in 2020 in accordance with the principle of "openness, equality, competition and selection". The relevant matters are hereby announced as follows:
1. Recruitment (Recruitment) unit, target, specialty and application conditions
(1) recruitment (Recruitment) unit
Shanghai headquarters of the people's Bank of China, all branches, business management departments, provincial capital (capital) City Central sub branches, sub provincial city central sub branches, branch business management departments, prefecture (prefecture) City Central sub branches The county (city) sub branch is the employing unit for the recruitment of the branch personnel
the units directly under the people's Bank of China are enterprises and institutions that participate in, support or guarantee the people's Bank of China to perform the functions of the central bank. People's Bank of China organ service center, people's Bank of China Party school, people's Bank of China Financial Research Institute, financial times, people's Bank of China credit reference center, people's Bank of China Clearing Center, China Coin Museum, China Financial Training Center, people's Bank of China digital currency Research Institute, people's Bank of China Financial Information Center The financial basic data center of the people's Bank of China, Zhengzhou Training Institute of the people's Bank of China, China Banknote Printing and Minting Corporation, China Gold Coin Corporation, China Financial Electronic Corporation and China Financial Publishing House are the employers recruited by the staff of the directly affiliated units
the above units are collectively referred to as recruitment units in this recruitment< (2) recruitment objects
full time college graates (hereinafter referred to as "fresh graates") who are included in the national unified enrollment plan, social in-service personnel (hereinafter referred to as "social in-service personnel") who have work experience in commercial financial institutions, economic departments and related majors, and returned students
returned students who have obtained a foreign degree after January 1, 2018 and have not assigned a work unit can apply as fresh graates< (3) recruitment (Recruitment) majors and job requirements
the recruitment majors of branch personnel mainly include: economy and finance, accounting, law, computer, statistics, management (focusing on public management, administrative management, human resource management related majors) and English. Some branches recruit a small number of science and engineering graates (excluding computer major, the same below) and security, Chinese, small language professionals. Specific majors and positions shall be listed in the recruitment and recruitment profile of PBC branches in 2020. XLS
for the recruitment majors and position requirements of the staff of the units directly under the PBC, please refer to the information sheet of open recruitment position requirements of the units directly under the PBC in 2020.xls< (4) registration requirements
1. Nationality of the people's Republic of China
2. Support the constitution of the people's Republic of China
3
4. Aged between 18 and 35 (born from October 11, 1983 to October 11, 2001)
5
6. Full time colleges and universities with bachelor's degree or above and bachelor's degree or above that are included in the national unified enrollment plan (some branches in arous and remote areas are relaxed to college degree), with professional counterparts, At the same time, they should also have the qualifications required for applying for the positions in the "people's Bank of China branch recruitment in 2020" and "people's Bank of China directly under the units of 2020 open recruitment job demand information table"
7. The academic qualifications of returned students should be certified by the relevant departments of the Ministry of ecation, and have the certificate of returned students issued by our embassies and consulates abroad
personnel who have been subject to criminal punishment for crimes, personnel who have been expelled from government organs and institutions, military personnel in active service, non fresh graates studying, personnel who have been dismissed by the people's Bank of China, and personnel who are not suitable for employment for other reasons are not allowed to apply for the examination
branches and directly affiliated units of the people's Bank of China conct qualification examination and selection based on job requirements and after comprehensive consideration of candidates' personal information, academic degree, professional situation and work experience< (1) to inquire about the job demand information of the recruitment (Recruitment) units
candidates should carefully inquire about the registration conditions and job demand of the branches and directly affiliated units, and be sure to register according to the job demand
(2) online registration and printing of admission card
online registration is adopted for this enrollment, and there is no on-site registration. Candidates can register through the following website (officially opened at 10:00 a.m. on October 11):
http://zhaopin.pbc.gov.cn
candidates can query the results of qualification examination, download and print the admission certificate and application recommendation form, and query the relevant recruitment information through the above websites
1. Online registration
(1) log in to the online registration system to register candidates. Name of ID number, password, name and ID card must be filled in when registering for registration. Please ensure that the name, ID number and other information are accurate and correct, and remember the registered user name and password.
candidates can log in to the registration system through their registered user name and password to register online, print the admission card and registration recommendation form, and query the written examination and interview results
(2) submit personal information: candidates fill in their personal information, upload photos and choose their positions when they register online
the photos uploaded by candidates should be their recent bareheaded front color electronic photos in JPG format, with a width of about 200 pixels, a height of about 260 pixels, a resolution of about 350 DPI, a file size of no more than 100k, and a clear and recognizable photo. Those who upload photos that do not meet the requirements or upload irrelevant photos shall be deemed to have given up the examination qualification automatically
(3) registration time: 10:00, October 11, 2019 to 22:00, October 20, 2019
(4) query of qualification examination results: October 12, 2019 to October 21, 2019
(5) for those who have passed the qualification examination, please log in to the system again to confirm whether to take the written examination. Written examination confirmation time: 8:00, October 22, 2019 to 23:00, October 24, 2019. Candidates who have passed the qualification examination must confirm whether they will take the written examination within the prescribed time. Those who fail to confirm in time shall be deemed to have given up the examination qualification
2. Printing time: November 2, 2019 10:00-november 9, 2019 9:15
those who have confirmed to participate in the written examination must log in to the online registration system at the above time, download and print the admission card. Those who have not printed the admission card after the expiration of the time limit will be deemed to have given up the examination qualification
(3) notes for registration
1. Candidates can only choose one position from the branches and directly affiliated units of the people's Bank of China
2. Candidates can only apply with the highest full-time ecation, and should also have the degree corresponding to the highest full-time ecation
3. Candidates must fill in their personal information truthfully and completely, the name of the graated institution must be consistent with the full name of the institution on the graation certificate, and social employees must fill in their work experience truthfully and in detail
4. The application recommendation form for 2020 recruitment (Recruitment) of people's Bank of China branches and units directly under the people's Bank of China (filled in by fresh graates and submitted ring interview) can be downloaded and printed from the above website
5. In order to facilitate candidates and rece the cost of registration, a total of 35 test centers are set up in the municipalities directly under the central government, provincial capitals, Dalian, Qing, Xiamen and Shenzhen. Candidates can choose the place of written test according to the actual situation when they register. The place of written test can be different from the place where the applicant is located, before 24:00 on October 21, Candidates can modify the location of the written examination
6. Candidates who have confirmed to take the written examination should print their admission cards at the specified time and take the written examination as required. If the candidates who have been confirmed to take the examination are unable to take the written examination e to force majeure, please contact the branch of the people's Bank of China in the place where the examination center is located within 7 days after the end of the examination to explain the reasons for their absence and provide relevant supporting materials. The people's Bank of China will also announce the name list of those who are absent for no reason in an appropriate way
7. Candidates can only use their second generation ID card to register, and ensure that the ID card is within the validity period ring the examination, and the registration must be consistent with the ID card used ring the examination
8. Without review, candidates can change their online registration profile and position. After passing the qualification examination, the submitted personal data and registration information will not be changed. If they fail to pass the qualification examination, they may apply for other positions
9. No fee will be charged for this recruitment
candidates should be responsible for the authenticity, accuracy and completeness of the information and materials submitted online. Those who fail to fill in the form as required, or do not conform to the actual situation, or cheat, will be disqualified from examination or employment (employment) once verified< 3. Examination and employment
examination includes written examination and interview
(1) written examination
there is no book for review in this examination. Candidates for economic and financial professional positions shall take administrative professional ability test and economic and financial professional knowledge test, while candidates for other professional positions (including multi professional mixed positions in open recruitment positions of directly affiliated units) shall take administrative professional ability test and application test. Examination time: 9:30-12:00 a.m. on November 9, 2019, in which 9:30-10:30 is the administrative professional ability test and 10:30-12:00 is the economic and financial professional knowledge (or application) test
candidates should take the written examination according to the time, place and examination room indicated on the admission card. When taking part in the examination, the candidates must carry the admission card and ID card at the same time. Those with incomplete certificates are not allowed to enter the examination room to take part in the examination
candidates can query their written test scores through the online registration system. Please pay attention to the notice of online registration system for specific query time< (2) after the interview, the people's Bank of China will determine the list of interviewers according to a certain proportion of the number of candidates to be employed according to the written examination results of candidates. The interview shall be organized and implemented by all branches and units directly under the people's Bank of China, and the candidates shall be informed of the interview matters by telephone, SMS or e-mail. When filling in the contact information, the candidates shall ensure that the recruitment unit can contact them in time
according to the needs of work, some recruitment units may increase interviews or other tests, and the specific test form and time will be notified by the recruitment unit
ring the interview, you should provide your ID card and the application recommendation form sealed by your school (for fresh graates, please download it from the registration website). At the same time, you should also bring other relevant supporting materials required by the recruitment unit, such as lack of certificates or relevant information

7. At present, no more than 2000 people have more than 1000 bitcoins.. Most of them are engaged in cryptocurrency projects. Well, first of all, bitcoin spread in foreign forums in 2011. In 2012, China graally began to have its own bitcoin community. At that time, curious and playful people began to mine with their broken computers. You should know that mining efficiency was extremely low at that time, and they didn't know how to trade bitcoin at all
since the second half of the past 12 years, all kinds of teaching have been popularized. We all play bitcoin with the psychology of collecting. Some people have started to study, and most of the research materials are from abroad. Then we begin the history of making rich with bitcoin, which we are familiar with now. This group of people are lucky, maybe a fool to buy and play, and now they have made money for you and me for several lifetimes. Not to mention other platforms, we can't count the number of multimillionaires created between 2017 and 2018.

8. The fac project is based on the contract development of Ethereum. Ethereum is a consensus based, scalable, standardized, feature-based, easy to develop and collaborative basic blockchain. Fac stands for Fashion China and fashion chain, creating interaction between famous designers and stars, just like bitcoin, reborn currency and other digital currencies, but the current fashion chain currency of fac is still the cornerstone period, that is, the initial stage<
Fashion Chain English: fac (fashion chain)
technical team: fac blockchain Research Institute
release date: April 2018
block speed: 15 seconds / block
total issue: 42000000 pieces
total circulation: 220000000 pieces
proof method: POS + POW
quantity of cornerstone: 500000000 pieces
price of cornerstone: 1eth = 150000fac pieces
income:
1 Fac point-to-point payment, application related fields expansion, payment, transaction application increase and application value growth (circulation value-added)
2. Effective nodes of fac generate miners' income every day (candy)
3. Effective nodes of worker system generate computing income every day.

9. Ethereum is also a proct of blockchain 2.0, which is an open intelligent contract complete solution. Bitcoin is the most important application of blockchain 1.0, which completes currency and payment transactions well. But when we need to record and transfer more complex asset types, we need the third step - a more powerful scripting system - to finally achieve Turing completeness (the ability to run any currency, protocol or blockchain). Ethereum is a blockchain based project, which aims to provide a Turing complete scripting language and Turing complete platform

blockchain 1.0 mainly refers to bitcoin. Blockchain 2.0 extends to all assets, while blockchain 3.0 goes beyond currency, finance, even commerce, and all areas of our lives, including politics, social relations, ecation, medical care, etc. According to the prediction and conception of people in the instry, the era of blockchain 3.0 will be realized in the next five years. At that time, blockchain will be recognized and accepted by all the public like the Internet, thus completely subverting our lives

McKinsey has submitted a technical report on blockchain to the Federal Insurance Advisory Committee of the United States. The report calls 2009-2016 the "Dark Age" and believes that all blockchain solutions ring this period are based on bitcoin, and the new era of blockchain will begin in 2016. At that time, the application of blockchain will become unprecedented. Applying an original sentence in McKinsey report: Based on the current development speed of blockchain, we believe that blockchain solutions may realize their full potential in the next five years.