WXB digital currency smart contract
1、 Different definitions:
1. virtual currency:
virtual currency refers to non real currency
digital currency:digital currency is an alternative currency in the form of electronic currency. Both digital gold coin and cryptocurrency belong to digiccy
3. Cryptocurrency:
cryptocurrency is a kind of transaction medium that uses cryptography principles to ensure transaction security and control the creation of transaction units
4. Token (token):
a kind of article whose shape and size are similar to currency, but the scope of use is limited and has no currency effect, and its token is the homonym of token in English
Second, the characteristics are different:1; It can also be said that virtual currency is personalized currency. In another way, it can also be called information currency
2. Digital currency:
is an unregulated and digital currency, which is usually issued and managed by developers and accepted and used by members of specific virtual communities
Cryptocurrency:cryptocurrency is based on the decentralized consensus mechanism, which is opposite to the banking and financial system relying on the centralized regulatory system
4. Token (token):
usually needs to be exchanged for money, used in shops, playgrounds, mass transportation and other places, as a voucher to use services and exchange goods
extended data
at present, digital currency is more like an investment proct, because it lacks a strong guarantee agency to maintain its price stability, and its role as a value measure has not yet appeared, so it can not be used as a means of payment. As an investment proct, digital currency cannot develop without trading platform, operating company and investment company
digital currency is a double-edged sword. On the one hand, the blockchain technology it relies on has been decentralized and can be used in other fields except digital currency, which is one of the reasons why bitcoin is popular; On the other hand, if digital currency is widely used by the public as a kind of currency, it will have a huge impact on the effectiveness of monetary policy, financial infrastructure, financial market and financial stability
& quot; A smart contract is a set of promises defined in digital form, including the agreements on which the contract participants can execute these promises& quot;
let's explore the meaning of his definition in more detail
commitment
a set of commitments refers to the (often mutual) rights and obligations agreed by contract participants. These commitments define the nature and purpose of the contract. Take a sales contract as a typical example. The seller promises to deliver the goods and the buyer promises to pay a reasonable price
digital form
digital form means that contracts have to be written into computer-readable code. This is necessary, because as long as the participants reach an agreement, the rights and obligations of smart contract establishment are executed by a computer or computer network
to further explain:
(1) when will the parties to the smart contract reach an agreement? The answer depends on the specific smart contract implementation. Generally speaking, the contract is discovered when the parties are committed to the execution of the contract by installing the contract on the contract host platform< (2) contract execution
& quot; Execute & quot; And the real meaning of it also depends on implementation. Generally speaking, implementation means active implementation through technical means
(3) computer readable code
in addition, the contract needs specific & quot; Digital form & quot; Very much depends on the agreement that the parties agree to use
protocol
protocol is technical implementation, on this basis, the contract commitment is realized, or the contract commitment is recorded. Which agreement to choose depends on many factors, the most important of which is the nature of the assets being traded ring the performance of the contract
take the sales contract as an example. Suppose that the participants agree to pay in bitcoin. The chosen protocol will obviously be bitcoin protocol, on which the smart contract will be implemented. Therefore, the contract must use & quot; Digital form & quot; It's bitcoin scripting language. Bitcoin scripting language is a non Turing complete, imperative, stack based programming language, similar to forth.
After a "thousand exchanges" war in the currency circle, the exchange is now in an unsaturated stage of competition, because the moat at the head is not wide enough, the barriers to competition are not hard enough, and the competition that everyone wants to win is very big. Globally, the total volume of digital asset trading is a growing market, and the exchange is the top of the whole instry's food chain, What we are entering is a "new continent of digital world", and the market is big enough; With the continuous iteration of technology and the increasing of application scenarios, the needs of users are also constantly diversified, with a hundred flowers blooming and a hundred schools of thought contending, each with its own characteristics. But after all, "safety first"
the security of exchanges is an eternal topic
as the gathering place of interests, the game of interests behind may create evil links. Looking back on the development history of digital currency exchange, we can see a history full of glory and darkness. Glory is that it continues to provide users with more and more trading services and categories. Unfortunately, in the early stage of the instry, there was a lack of system. Most of the traditional exchanges were highly centralized. As the vested interests, they were opaque in assets, unfair in the distribution of interests, weak in the underlying structure, backward in security technology, chaotic in currency rules, and even dark box operation. In order to promote the global blockchain instry into a healthy development state, the market urgently needs an innovative, democratic, transparent, equal, free and safe trading environment to cope with the upgrading and iteration of the blockchain instry and promote the formation of a benign competition pattern in the global exchanges
the endless events tell us that history will not forget the instrial revolution and innovation mission of the blockchain instry, but also the hope brought by the blockchain to the global trust mechanism and the beautiful vision of redefining the world. Because of this, based on our deep understanding of the blockchain revolution and our goal of making a key contribution to the global blockchain business, we are striving to "pick one from a thousand miles" the most reliable blockchain asset trading platform
as an investor in the currency circle, the big knife of asset security is always hanging on his head. We all realize that the currency circle is a place where risks gather, so we don't even have the courage to recommend investment opportunities to our relatives and friends. Not to mention the drastic fluctuations in token trading, even buying and hoarding coins in the exchange are not bold to recommend. Because in the current stage of weak supervision, many exchange accidents and security news emerge in an endless stream, which means that a careless friend's assets will be swept away. When this wave of bear market came, we saw too many exchanges go bankrupt because of poor profits. At this time, conscientious exchanges will return the token to users, but most of them will roll up the token after they declare bankruptcy. There is "Mentougou" before and "fcoin" after. At this time, users react: you want to earn the profits of the transaction, people are interested in your principal. After seeing too much news like this, I seldom recommend buying coins to friends who are interested in investing in the currency circle
until I also experienced the "312" currency disaster in 2020, fortunately, my exchange adopted the circuit breaker mechanism in time to deal with it, so that I reced the panic and cut the flesh. Until now, the market has come back, experienced the return of capital and made profits, I carefully considered recommending this exchange; In this currency disaster, LOEX Lein of this exchange took correct and timely measures to protect the interests of users, won good reputation of users, and stood the test before I really took action and recommended it to my friends
the exchange, which has been operating for two years and has kept a record of zero security failures, has captured the rigid demand of many investors: asset security since its emergence. LOEX always adheres to the principle of user first and safety first, provides users with a safe, stable and convenient digital asset trading platform, and is committed to becoming a leader in the era of digital economy
first of all, LOEX ren operates openly through smart contracts
every user's transaction can be clearly observed through the EOS browser to ensure that your transaction is real. At the same time, because your assets are no longer handed over to the official team of LOEX ren, they are put in a place called "smart contract". Public rules ensure that your assets are smart and your EOS account is free to enter and leave, which ensures the safety of your assets. This is a safe transition to decentralization
next, LOEX also has AI program to automatically detect
fault handling: support cluster expansion and active / standby operation
monitoring and early warning: real time monitoring of functional moles and timely early warning of abnormal moles
operation and maintenance center: it has a complete server cluster and database maintenance platform
protection measures: DDoS protection, intelligent ban, remote disaster recovery,
risk control management
we have a cross chain hosting cooperation system
the security system cooperates with Manwu District, know Chuangyu and other well-known enterprises
we have reached in-depth cooperation with the above-mentioned well-known institutions in terms of security. The security institutions provide a series of code audit services for smart contract projects, and continue to provide security audit services after the code upgrade of the project party. At the same time, the organization team will also provide long-term safety testing services to LOEX
therefore, what LOEX can do is secure asset protection, risk screening of currency projects, and security behavior inspection of exchange users
financial management cooperates with famous Wall Street AA level quantitative team
in the future, it can make LOEX exchange more secure and reliable. LOEX cross chain hosting can bring a large number of application scenarios to customers. LOEX exchange can provide sharing depth for all partners of loex.io, so that customers can have better circulation and trading depth in the exchange, and complete safe startup
bus line: No.5, the whole journey is about 24.8km
1. Take No.5 from Chengde railway station, pass 45 stations, and reach Guoshan community station (or take No.15)
2. Walk about 710m to Chengde Iron and Steel Group Co., Ltd
will not be replaced. Another important reason is that as long as one pixel of 3D code is damaged, or the color presents chromatic aberration, it may be unable to read. But now there are many electronic procts, chromaticity is not the same, there will be color difference, so it is difficult to identify. However, the QR code will not have such a situation, sometimes even some damaged information can be read completely, which does not affect the use of . So compared with the two-dimensional code, its practicability is not very strong
Although the idea of collecting patent fees from Chinese people could not be realized, Teng Hongyuan did not attach importance to the invention at the beginning, so Chinese inventors improved the QR code, which also promoted the spread of QR code in China. Three dimensional code is really good, but because both businesses and users are used to two-dimensional code, it is almost impossible for three-dimensional code to replace two-dimensional code in a short time< after all, although 3D code is better than 2D code, 3D code also needs to be swept. So even if 3D code can replace 2D code, it is estimated that it will be many years later. After all, it takes a long time for users to get used to it strong>according to the definition of "appearance design", it refers to the new design of proct shape, pattern or their combination, as well as the combination of color, shape and pattern, which is aesthetic and suitable for instrial application
it can be seen that the carrier of modeling must be "proct". If your "coin" is a souvenir or decoration, it should be a proct and can be declared. But if your "coin" belongs to money, it can't.