Blockchain ICO Ethereum
what is Ethereum:
Ethereum is an innovation based on the application of technologies and concepts in bitcoin to computers. Ethereum itself imitates a lot of bitcoin technology to maintain the computer platform. blockchain technology is one of them
Ethereum platform can safely run any program users want
advantages of Ethereum over other competitive currencies before Ethereum appeared, some digital currencies imitated bitcoin. However, these projects have their own shortcomings, they can only support one or several specific applications at the same time< However, the reason why Ethereum can surpass the limitations of these projects in the past is because of the core idea of Ethereum
what Ethereum wants to implement is a blockchain protocol with built-in programming language. Since it supports programming language, in theory, any blockchain application can be defined with this language, and then run on Ethereum's blockchain protocol as an application
The design of Ethereum is very flexible and adaptable
Ethereum target sets the advantages of blockchain technology, in order to add the advantages of blockchain, such as decentralization, openness and security, to almost all computing fields
blockchain applications of Ethereum
Ethereum has many blockchain applications, such as digital applications of gold and stocks, financial derivatives applications, DNS and digital authentication, etc
Ethereum has achieved more than 100 blockchain applications by many start-ups
Ethereum has also been closely watched by some financial institutions, banking consortia (such as R3), as well as large companies like Samsung, Deloitte, RWE and IBM. As a result, a number of blockchain applications such as simplified and automated financial transactions, merchant loyalty index tracking, and gift cards designed to achieve decentralization of electronic transactions have emerged
the relationship between Ethereum and blockchain:
Ethereum is a programmable blockchain
Ethereum does not give users a series of preset operations (such as bitcoin transaction), but allows users to create complex operations according to their own wishes
in this way, Ethereum can be used as a platform for various types of decentralized blockchain applications, including but not limited to cryptocurrency
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"
blockchain is a general technology derived from bitcoin. It implements a decentralized database model. Bitcoin can be called blockchain 1.0 because it has no concept of smart contract. The key technologies of blockchain include cryptography encryption and decryption and consensus mechanism. Blockchain is generally used to combine with specific business logic, which needs to rely on smart contract, which provides an execution mode free from human interference
the IPO of ICO originates from the concept of initial public offering (IPO) in the stock market. It is the behavior of blockchain project to issue token for the first time, raise bitcoin and solve Ethereum and other common digital currencies.
STOSecurity Token Offeri&# 8204; "Security token issue". In terms of name, it is similar to ICO and IFO in concept, and it is a way of token issuance. The most prominent feature of STO is that the token issued has the property of securities, which is regulated by securities institutions (such as SEC) and relevant securities laws and regulations
ICO (abbreviated as initial coin offering) is an IPO concept derived from the stock market. It is the behavior of blockchain project to issue token for the first time and raise bitcoin, Ethereum and other common digital currencies
both ICO and sto are procts of digital capital. In the era of blockchain, they are not black or white. Eggs should not be put in the same basket. So how to invest? It depends on whether you want to be an egg maker or an egg seller
if you are an ordinary investor and register a digital wallet, you can buy and sell on major trading platforms such as currency / currency security; For project investors, they can issue their own currency to achieve more financing goals. At present, Singapore is the holy land for Asian blockchain to settle down, mainly because the local policy and atmosphere are very relaxed, and there is no need to pay tax to register a public non-profit foundation in Singapore to do overseas projects, The Inland Revenue Department of Singapore will not tax local capital injection and investment
registration process of Singapore Foundation: the ID cards of two registered directors and the company name are required for verification, and the registration can be carried out after the verification, which takes a total of 10-25 working days
because of the new technology&# 8204; Due to the particularity of the economic environment in Gabor, in the later period of the foundation, it is legal to carry out such actions as ICO and other currency transactions. Some friends in the blockchain instry know that to do ICO blockchain, they need to register in Singapore. In order to achieve more compliant operation in the later period, it is suggested that investors register in Singapore foundation as soon as possible for financing
from the psychological characteristics of different ages of primary school students, the basic requirements of oral arithmetic are different. Low and middle grade students mainly add one or two digits. It is better for senior students to take the one digit by two digit mental arithmetic as the basic training. The specific requirement of oral arithmetic is to multiply the number of one digit and the number of ten digits of two digits, and then add the proct of multiplying the number of one digit and the number of one digit of two digits to the three digits, and quickly say the result. In primary school, this training is a sublimation training of abstract thinking of numbers. It is very beneficial to promote the development of thinking and intelligence. This exercise can be arranged in two periods. One is to read in the morning, the other is to arrange a group at the end of homework. Each group is divided as follows: one digit is optional, corresponding to the number of one digit or ten digit in two digits. There are 18 questions in each group. Let the students write the formula first, then write the number directly after several times of oral calculation. In this way, after a period of time (generally 2-3 months), the speed and accuracy of oral calculation will be greatly improved< Second, the main form of the number of senior primary school students has changed from integer to score. In the operation of numbers, the addition of different denominators is the most time-consuming and error prone place for students, and it is also the key and difficult point of teaching and learning. How to overcome this key and difficult point? It is proved that it is correct to put the oral calculation of fraction operation on the addition of fractions with different denominators. Through analysis and inction, there are only three cases of different denominator addition (subtraction) method, and each case has its oral arithmetic law. As long as students master it, the problem will be solved
1. For two fractions, the large number in the denominator is the multiple of the decimal
for example, "1 / 12 + 1 / 3", in this case, oral arithmetic is relatively easy. The method is: the big denominator is the common denominator of two denominators. As long as the small denominator is expanded by multiple, until it is the same as the big number, the denominator is expanded by several times, and the numerator is also expanded by the same multiple, We can add the fractions with the same denominator for oral calculation: 1 / 12 + 1 / 3 = 1 / 12 + 4 / 12 = 5 / 12
2. The denominator of two fractions is coprime. This kind of situation is more difficult in form, and students are also the most headache, but it can be changed from difficult to easy: after it is divided, the common denominator is the proct of two denominators, and the numerator is the sum of the proct of the numerator of each fraction and the other denominator (if it is subtraction, it is the difference of the two procts), such as 2 / 7 + 3 / 13. The oral calculation process is: the common denominator is 7 × 13 = 91, molecule 26 (2 × 13)＋21(7 × 3) = 47, the result is 47 / 91
if the molecules of both fractions are 1, the oral calculation is faster. For example, "1 / 7 + 1 / 9", the denominator is the proct of two denominators (63), and the numerator is the sum of two denominators (16)
3. Two fractions and two denominators are neither coprime numbers nor multiples of decimals. In this case, we usually use the short division method to get the common denominator. In fact, we can also calculate the general score directly in the formula and get the result quickly. The common denominator can be obtained by enlarging the large number in the denominator. The specific method is: to double the large denominator (large number) until it is a multiple of another denominator decimal. For example, 1 / 8 + 3 / 10 expands the large number 10, 2 times, 3 times and 4 times, and compares it with the decimal 8 every time to see if it is a multiple of 8. When it is expanded to 4 times, it is a multiple of 8 (5 times), then the common denominator is 40, and the numerator is expanded by the corresponding multiple and then added (5 + 12 = 17), and the number is 17 / 40
the above three cases are also applicable to the addition and subtraction method with score< Thirdly, the content of memory training is extensive, comprehensive and comprehensive. Some common operations are often encountered in real life. Some of these operations have no specific rules of oral arithmetic and must be solved by strengthening memory training. The main contents are as follows:
1
2. The proct of the approximate value of PI 3.14 with one digit and with several common numbers 12, 15, 16 and 25
3. The denominator is the decimal value of the simplest fraction of 2, 4, 5, 8, 10, 16, 20 and 25, that is, the interaction between these fractions and decimals
the results of the above numbers, whether in daily work or in real life, are used very frequently. After mastering and remembering them, they can be transformed into abilities and proce high efficiency in calculation< Four, regular training
1. There are mainly five laws in this aspect: commutative law and associative law of addition; Commutative law, associative law and distributive law of multiplication. Among them, the multiplication distribution law is widely used and has many forms, including positive use and negative use, and the forms of integer, decimal and fraction. In the multiplication of fractions and integers, students often ignore the application of the law of distribution of multiplication, which makes the calculation complicated. Such as 2000 / 16 × 8, using the law of multiplicative distribution, the result is 1001.5, but using the general method of false fraction is time-consuming and easy to make mistakes. In addition, there are subtraction properties and quotient invariant properties< 2. Regular training. It is mainly the oral calculation method (strategy) of the square result of the two digit number of 5
3. Master some special cases. For example, in fractional subtraction, if the numerator is not enough to be subtracted after general division, and the numerator subtracted is usually larger than the numerator subtracted by 1, 2, 3 and other smaller numbers, no matter how big the denominator is, it can be directly calculated orally. For example, the difference between 12 / 7 and 6 / 7 is only 1. The difference between 12 / 7 and 6 / 7 must be 1 less than the denominator. The result is 6 / 7 without calculation. Another example is: 194 / 99-97 / 99, if the difference between the numerator and denominator is 2, the difference between the numerator and denominator is 2, and the result is 97 / 99. When the subtracted molecule is larger than the subtracted molecule by 3, 4, 5 and other smaller numbers, the result can be quickly calculated orally. Another example is the mental calculation of the proct of any two digit number and 1.5, which is two digits plus half of it< 5. Comprehensive training
1
2< 3. Comprehensive training of four mixed operation sequences
comprehensive training is concive to the improvement of judgment ability, reaction speed and the consolidation of oral arithmetic
of course, in order to make students master the above situations, teachers should first use them skillfully, so that they can be handy in guiding and improve the effect. At the same time, the training should be carried out persistently. It is difficult to achieve the expected effect to catch fish in three days and dry the net in two days.
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.
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.
one company name and two registrants' ID cards are required to register the Singapore non-profit public foundation