云游通官网,云游通app

云游通官网：云游通官网是云游通在网络上的官方网站，它提供了丰富的信息服务，包括云游通的最新活动、产品介绍、客户服务、技术支持等等。它拥有简洁的界面设计，清晰的文字描述，易于使用，满足用户对信息的需求。此外，云游通官网还提供了丰富的视频教程，帮助用户更好地使用云游通产品，提高用户体验。

云游通APP：云游通APP是一款专门为用户提供智能旅行服务的应用程序，它可以帮助用户快速安排行程，提供多种智能出行方案，帮助用户节省时间和精力。此外，云游通APP还提供了自助服务功能，可以智能推荐附近的景点、酒店、餐厅等，让用户轻松享受智能旅行的乐趣。

智能旅行服务：智能旅行服务是云游通提供的一种智能出行服务，它可以根据用户的出行需求，智能推荐最优的出行方案，帮助用户安排行程，节省时间和精力。此外，智能旅行服务还可以智能推荐附近的景点、酒店、餐厅等，让用户轻松享受智能旅行的乐趣。

请查看相关英文文档

❶ It’s 2021, what will be the development trend of my country’s blockchain technology in the future?

Domestic blockchain technology has been conceptualized a few years ago, and now it has It has been widely used in actual business scenarios, such as the rice we eat, and the QR code on the packaging
Traceability is the application of blockchain technology. Companies like Shanghai Wanglian Technology entered the market earlier and are currently developing very well.

❷ Explain blockchain in vernacular

img src=' https://p26 . toutiaoimg.com/large/39b 70000088 e 51 B3 c 258 ' /

Recently, various ICO financial scams have been blocked in China, but this does not hinder the vigorous development of blockchain technology. After all, technology is innocent and can bring benefits to people. As for how to use it, it depends on people to operate it. If the operation is good, you can recommend development. If the operation is not good, it is like the major ICO projects. Find some knowledge for Internet celebrities to conduct so-called illegal fund-raising and financial fraud.

After talking for a long time, what is blockchain? When it comes to blockchain, the first thing that comes to mind for many people is Bitcoin. We need to solve a problem. Bitcoin is a blockchain, but blockchain is not Bitcoin. Simply put, blockchain is distributed ledger technology (DLT), not a token. It has many characteristics, such as decentralization, traceability, and difficulty in tampering.

(1) Blockchain is a distributed database

First of all, this is a decentralized distributed architecture system. Therefore, having only one central server or node is not called a blockchain. For example, if you go to Taobao to buy a mobile phone, you and the seller are strangers and have no basis for trust. If you give the money to the seller first, the seller may block you by not delivering the goods, and then your mobile phone money will be gone. If the seller ships first, do you pay? It is possible that you do not pay the seller after receiving the goods, and one party may lose money anyway. At this time, a third-party guarantee is needed to solve the trust problem. Just like Alipay now, you give money to Alipay and the seller will deliver the goods. When you receive the goods, the seller will receive the money.

The above example is a centralized system because all guarantee work is handled by Bora, a third-party payment company. Suppose one day Alipay wants to tamper with data, neither buyers nor sellers can do anything because all authority is in the hands of one company.

At this time, a distributed database is needed. This third party is no longer Alipay, but thousands of monitors. When you buy a mobile phone on Taobao, you will shout to everyone that I am going to XXX to buy a mobile phone, and I paid XXX yuan. The other person will yell like everyone else. I collected XXX’s mobile phone bill and sent it over. In this way, everyone knows about this transaction and everyone is recording this transaction, so it is useless if one or two nodes have problems or malicious behavior, because most nodes have recorded this matter.

(B)Blockchain uses encryption technology to ensure data security

hereThere are two important points: 1. Crypto-enabled hash function 2. Asymmetric encryption.

If you are interested in specific concepts, you can go online, but people without basic knowledge may not be able to understand it, because these two points are too professional. In fact, if you only know the use of blockchain, you don’t need to have an in-depth understanding of it. It is also a technical concept. All you need to know is that blockchain relies on these technical points to ensure data security and is not easily tampered with. Of course, many people say that these two points can guarantee 100% non-tampering. I want to be a little conservative here. As an author who works in the security industry, I have always been skeptical about 100% security, so it may be more appropriate to call it difficult to be tampered with.

I will briefly introduce these two concepts and try to explain them clearly in plain English.

1. Cryptographic Hash Function

This is mainly used to verify the integrity of information. For example, I sent a message to the company leader saying that I was sick on Friday and needed to take a day off. At this time, a hash value will be generated based on the message I sent, such as: 123456. At this point, when the leader receives this message, a hash value is also generated. Because the content of the message I sent has not changed (it has not been tampered with), the hash value remains unchanged, still: 123456. This is if someone wants to tamper with this news and get sick on Friday and need to take a year off. At this time, the hash value will change, such as: 123489. That's when we learned our information had been tampered with.

2. Asymmetric encryption

It is mainly used for information encryption and authentication. It is actually two keys, one is called the public key and the other is called the private key. Public key encryption, private key decryption.

A public key is a key that everyone has. You own it, I own it. We can all encrypt with this key, but when decrypting it must be decrypted with my private key. If you don't have my private key, you can't decrypt it.

(C) The blockchain uses a consensus algorithm to reach consensus on new data.

The role of the consensus algorithm is to enable all nodes to reach a consensus on the new block. In other words, everyone must approve the new block.

For a centralized deployment system, this is simple, everything is controlled by the center, but in the distributed system of the blockchain, it is very complicated. For example, there are three nodes. A said he bought a mobile phone from XXX store and paid for it, B said he didn’t pay, and C said he didn’t pay enough. Then who do you listen to? What's more, blockchain technology is not as simple as three nodes, but a huge distributed system.

This is when a solution is needed. There is a corresponding problem in computer science called the "Byzantine Universal Problem" or "Byzantine Fault Tolerance" (BFT). This question was raised not because of Bitcoin, but because of a special background.

Early aircraft had three independent control systems. Why do we need three independent control systems? For example, in an emergency, there is a plane opposite. How to judge whether you should hide? If there is only one system, there is no choice, which is equivalent to centralized deployment. If the system breaks, you're dead. What if one of the two systems breaks? The good ones say to hide, the bad ones say not to hide, planComputers cannot determine the final result. Therefore, three independent systems are needed to support it, and the probability of two total failures is still very small. But this only takes into account injuries. What should I do if there is a malicious system? Is three enough? The answer is no, we need four systems to maintain consensus.

The use of blockchain is similar, because it is supported by a huge number of nodes, and each node is an independent system without interfering with each other. We can assume that the number of failed nodes and malicious nodes is limited, so it will not cause abnormal consistency of data.

Related questions and answers: What is blockchain? What is the use?

Blockchain is a new computing paradigm and distributed infrastructure that uses fast chain data structures, distributed node consensus algorithms, cryptography and smart contracts based on automated script codes to produce, verify, store and transmit data. It can also be said that blockchain is a distributed ledger technology that can provide a decentralized trust mechanism in a non-trust environment, allowing multi-party participants to conduct secure and trust-based transactions without intermediaries.

The core advantage of blockchain technology is decentralization. It can realize decentralized credit-based transactions in a distributed system where nodes do not need to trust each other by using data encryption, timestamps, distributed consensus and economic incentives. Point-to-point transactions, coordination and collaboration provide solutions to the common problems of high cost, low efficiency and insecure data storage in centralized institutions.

The fields of use of blockchain include digital currency, certificates, finance, anti-counterfeiting and traceability, privacy protection, supply chain, entertainment, etc. With the popularity of blockchain and Bitcoin, many related top domain names have been registered. It has had a relatively large impact on the domain name industry.

Related Q&A: Can you explain to me what a blockchain is in an easy-to-understand way?

Er Gazi is my friend since we were young, and we were naked in Hegou together. Later, I came to the city to study and work, and lived a life as a drifter in the north; he farmed at home and did some small business, and now he has a son and a daughter, and his life is safe. He envied my so-called "seen the world", and I envied his simple life without the pressure of mortgage loans. We have completely different and mutually enviable lives??

That day, Gazi came to me on WeChat and asked "District" What is a blockchain?" I was stunned for a moment, how could this idiot care about such an avant-garde word? I pretended to be calm and prepared to talk about the technical principles bit by bit, but I could see the confused expression of that idiot through the screen of my mobile phone. How to explain "what is blockchain" to people who have a little bit of Internet concepts and technical foundation? This seems to be a very thorny problem??

The village commissary interprets the core of blockchain (picture quoted from the Internet)

The core essence of blockchain is "decentralization", and almost all operating modes of blockchain operate around the concept of "decentralization". Once you understand what "decentralization" is, you can basically explain the question "what is a blockchain?" For Erga, of course, he must perform a version that he can understand.

"I said, Gazi, are you still open that canteen at the east end of the village?" Gazi repliedYes, I decided to use this canteen as an example to explain the actual use scenarios of blockchain in modern business and financial models, so that he can better understand what blockchain is.

"Are there still many villagers who take credit now? By the end of the year, some of the accounts cannot be remembered clearly, and there are still many defaulters or those who refuse to accept their accounts?" At this point, Ergazi got emotional and kept complaining. Nowadays, people's hearts are not as old as before, and business is difficult to do!

"In the past, the operation model of your canteen was a typical centralized one. You granted credit to the villagers and allowed them to take accounts on credit. All accounting was done directly through you and our villagers. You were the center of all accounting affairs." Ergazi said I understand, let me continue.

I said: "If you fail one day, then all the accounts will become dead debts? It will be difficult to get back the IOUs written in black and white, let alone those who remember the accounts verbally, but the block The decentralization of the chain can solve this problem very well. As long as the earth still exists, the blockchain will remember that every account will exist forever." Erga became more energetic after hearing this.

The essence of blockchain is "decentralization"

"The essence of blockchain is decentralization. Once someone takes credit from you, all the neighbors in the village will help you keep accounts. Because of the accounting There are many nodes, and it is neither easy to make mistakes nor others to default on the debt, so everyone reaches a consensus. If someone maliciously fails to pay back the debt, the whole village will know his character, and no one will be willing to have financial transactions with him in the future? ?”

At this point, Gazi was obviously a little excited. It seemed that he was really worried about the credit issue. Seeing that Gazi was interested, I felt a little sense of accomplishment and continued: "Of course, the above is just an analogy. In fact, the blockchain does not really allow the villagers to get paper and pen to help you keep accounts, but through the Internet It was completed by networking with the computer."

At this time, Gazi was a little confused and asked: "Then everyone in the village knows what others bought from me, so who would buy anything from me? It's really a bit weird. There is no privacy. And you don’t have time to keep accounts here. Last year’s accounts are said to be this year’s. What if you keep delaying it?”

“Okay, Gazi, you are on to the point of asking this question.” It seems that Gazi is not stupid at all, and is still very smart in doing business. I continued to explain: "So, the recording and transmission of this information are all done through encryption. What you see is a string of numbers and English, and each account has a timestamp to record the time it occurred. , can't be relied on."

Gazi had another question: "Could it be that the people who owe the debt have a good relationship with the villagers, and they join forces to tamper with the accounting? Then it will be unclear what to say? ?”

“Gazi, that’s all you have to be careful about, haha.” I understood Gazi’s concerns and continued to explain: “The mechanism of the blockchain requires more than 51% of people to agree to tamper with a bill. Yes. There is a degree of closeness and distance between people, and it is impossible for everyone to prefer one person. If it were a computer, more than half of the computers in the entire network would need to recalculate. This project is so huge that it is almost impossible to complete?? ”

That’s it, passedCombining the actual situation of the canteen with some scenes in life, Gazi understood what is in the blockchain: decentralization, distributed accounting, consensus mechanism, encryption mechanism, timestamp, and the characteristics that are not easy to be tampered with.

Ergazi was silent for a moment, as if he was digesting the example I just gave him, and I don’t know how much he can understand it. Not long after, he sent me another voice message on WeChat: "What does blockchain mean? In the past, when I bought goods online and paid for them, I had to go through Jack Ma's house. If there is a blockchain, can it be done directly?" When trading with sellers, bookkeeping is very safe anyway."

"Okay, Gazi, it's really clear. Blockchain is essentially a decentralized distributed ledger data cloud. Of course, it can be understood as you understand it. "." I am very happy that Ga Zi can roughly appreciate the true charm of blockchain. Fortunately, my words have not been in vain.

What is Bitcoin? (Picture quoted from the Internet)

"Then what is Bitcoin? What does it have to do with the blockchain?" Gazi asked.

I thought about it briefly and decided to continue explaining the story of the canteen to Gazi: "In your canteen, the villagers can't keep accounts for you for free all day long. Do you have to bring something to visit during the holidays? Yes, this is the reward mechanism of the blockchain, and everyone who participates in bookkeeping may receive rewards."

"Then what are the rewards based on? There must be a rule, right?" Gazi asked very puzzled.

I explained: "Zhang San went to your store to buy a pack of cigarettes on credit, but Li Si knew about it first and kept an account for you first. Then other people knew about it and started keeping accounts. Then Li Si could get A small red flower as a reward ~ This little red flower is generated by the blockchain system and has no value in itself, so you do not need to pay any cost for this little red flower??"

"Then Bitcoin can be used as money Flowers? How is it different from the banknotes we usually spend?" Gazi continued to ask.

"Bitcoin is a digital encrypted virtual currency. In principle, it has no value itself like our banknotes. However, banknotes have the country as a credit guarantee, so they have value. Bitcoin is the Bitcoin network The value formed due to consensus among users has tradable attributes, so it can be used to carry value." What is said here is a bit profound, I don't know if Gazi can understand it.

I continued to explain: "Banknotes can be printed infinitely. If more are printed, inflation will occur. When we were young, popsicles costing 1 cent were very good. Now we cannot eat them for 1 yuan. Of course, there are factors that affect inflation. A lot. The number of Bitcoins is fixed, and there is no possibility of unlimited over-issuance. However, different people have different judgments on their value, coupled with the influence of supply and demand and investor sentiment, so its price is always fluctuating. ."

What is the difference between Bitcoin price fluctuations and stocks?

"So speculation in Bitcoin is speculation in stocks? Can you understand it that way?" Ga Zi seems to know a lot.

"Actually, there are some similarities, but there are also big differences." I continued Gazi's topic: "The price of stocks always revolves around the company.Valuations fluctuate, and there are government regulations on the stock market. Bitcoin itself has no value. It is priced entirely based on supply and demand and player valuations. It grows wildly without any government supervision. Therefore, it may have higher risks and higher returns than stocks. "

In the end, Gazi revealed the real purpose of today. He asked me: "Can I invest in blockchain projects? ”

Gazi is a typical example of those who don’t go to the Three Treasures Hall for anything. Although there is a large circle of people who are involved in both blockchain and Bitcoin, in fact, what he really cares about is “blockchain project investment” Is it reliable? "When these words came out, I was extremely shocked. Now the so-called blockchain investment projects have actually reached fourth- and sixth-tier cities and small towns!

As of now, there are only three types of blockchain investments. Situation: Mining, currency speculation, so-called blockchain projects.

Mining and currency speculation are still the main lines of the blockchain (pictures quoted from the Internet)

The so-called mining means mining by purchasing mining machines, etc. Equipment, mine virtual currency, and then sell it for cash to get returns. You can install the mining machine yourself, or you can find a mining pool to host it, but the core keys to profitability are "computing power" and "power consumption" as well as Investment in equipment. With the sharp drop in the price of virtual currencies and the increase in mining difficulty, the current mining returns of many currencies are very unsatisfactory. Mining is obviously only a very small number of investors who understand technology can play successfully. I My childhood friend Gazi obviously can’t play with it.

As for “coin speculation”, I have just introduced some differences between Bitcoin and stocks in the previous section. In principle, although they are both “buy low and sell high” operations , but there is a huge difference. Ordinary investors cannot determine the value of a virtual currency itself, and the price is determined entirely by the relationship between supply and demand, which is somewhat similar to what we often call "market makers." On the other hand, the virtual currency trading market is extremely Irregularities, theft and hacker attacks often occur, and the risk factor is much greater than investing in stocks. For the safety of my friends' funds, I am one of the ten thousand people who disagrees with "coin speculation"!

"September 4th" It is illegal to issue virtual currency

In fact, in my opinion, most of the so-called investment projects in the market are essentially "illegal fund-raising" and "pyramid schemes." Some so-called blockchain investment projects use various The packaging and inflammatory rhetoric attract investors into the circle, and then create the illusion of profitability by building a software and hardware ecosystem of issuing new coins + mining + currency speculation, and then finally run away. Our country's laws clearly stipulate that the issuance of virtual currencies is illegal.

Illegal pyramid schemes now wear the cloak of blockchain (picture quoted from the Internet)

And how to identify some pyramid schemes under the guise of blockchain? In fact, these pyramid schemes are also so-called Ponzi schemes. , what we ordinary people often call "empty gloves". These so-called "direct sales" or "marketing" activities often do not have any actual products to circulate, and rely more on the development of "offline" to ensure top-level profits. As the district With the rise of the concept of blockchain, this MLM model has shown an intensification trend, even under the guise of state support for new technologies.To deceive people under the guise of magic.

When Gazi asked, “Can blockchain projects be invested in?”, I realized the seriousness of the problem. Gazi is a typical young man from a small town, and his pursuit is his wife and children. But when faced with the attraction of "wealth", people often do inappropriate things. Mining and currency speculation are simply not suitable for him, let alone blockchain investment projects that are most likely "illegal financing" or "illegal pyramid schemes"!

I quickly dialed Gazi’s phone number and carefully conducted the above analysis??

❸ What currency is EOS

Blockchain currency.

EOS coin is a blockchain operating system designed for commercial distributed applications. EOS is a new blockchain architecture introduced to achieve performance expansion of distributed applications. It is Called Blockchain 3.0. E0S has considerable investment value and has basically gained consensus in the currency circle. It can also be said to be the troika of virtual currencies.

(3) Extended reading in the fifth area of ​​Yuntong Blockchain:

Notes:

area Blockchain technology is still in an early stage. Not only has it not yet formed a unified technical standard, but various technical solutions are still developing rapidly. However, the scalability of blockchain technology has not been tested in large-scale practice, and it is still mainly in the prototype design stage. Therefore, in a relatively short period of time in the future, there will still be problems with the blockchain’s uploading speed, and it will not be able to meet large-scale commercial applications for the time being.

There are bubbles in various virtual currencies on the market, so investment must be cautious: virtual currency itself is not a real currency. Although virtual currency uses the source technology of blockchain, it is neither endorsed by national power. It has no actual use value.

❹ What blockchain technology application development platforms are currently available in China

The so-called blockchain technology, referred to as BT (Blockchain technology), is also called distributed ledger technology. An Internet database technology characterized by decentralization, openness and transparency, allowing everyone to participate in database records.

❺ Currency Value (BV)---Unlocking the True Value of Blockchain Digital Currency

After the rise of the blockchain market bull market in 2017, a large number of companies with strategic vision have set foot in it. In the blockchain industry, with the boom coming in 2018, the chain circle is becoming more and more mixed. Investors, blockchain companies, and trading platforms increasingly need more neutral media to speak out.

Based on this background, the BV project is committed to building a value discovery platform that connects trading platforms, blockchain companies, and investors. Committed to building the world's leading blockchain digital media.

BV is a value reference platform constructed for blockchain teams, trading platforms, and investors using big data, cloud computing, and AI artificial intelligence, based on Turing programming. The BV project is an independent blockchain team and transactionPlatform, fourth-party intelligent information and data analysis platform for investors.

BV is different from other cryptocurrencies or digital tokens. BV will not conduct an initial coin (ICO) issuance, but will use the blockchain information APP under the BV project for ecological incentives. Users with BV can get more service content from the APP, and currency holders will continue to be compensated based on the team’s profitability.

As the initiator of the BV project, Ms. Meng Hua has rich experience in the media industry. As a senior media person, she has been engaged in media operations related work for many years. At the same time, Ms. Meng Hua is also the founder of Coin Catalog. Ms. Meng Hua creatively designed a double lock-up plan to make the BV project more market competitive.

Double lock-up plan content: Except for 10% of the R&D team and early contributors, the remaining 90% will be locked up. From now on, 90 million will be unlocked through smart contracts approximately every six months until June 2023. All unlocked. The unlocked BV will be temporarily frozen in the account waiting for circulation. Each BV is based on US$0.04. If the average BV price in the market for the month is lower than US$0.04, the BV in the account to be circulated will be destroyed; if the average BV price in the market for the month is higher than US$0.04, the BV in the account to be circulated will flow into the market according to the distribution plan. . This can effectively avoid the risk of BV break and market crash.

The BV project is currently progressing smoothly, with initial research and underlying architecture development completed. Recently, the APP beta version has also been approved and launched online. In the future, the BV team will continue to optimize the project and increase project promotion efforts to improve user satisfaction and user stickiness. Be a blockchain smart media with the most attitude.

❻ What areas will the development direction of blockchain content projects be in?

Blockchain industry development trend analysis technology application fields have broad prospects

Blockchain technology applications rely on their point-to-point payment, public With the characteristics of transparency and openness, the most direct application field is the field of payment. However, the domestic ticketing industry has too many levels of agents, rampant scalpers, multiple tickets sold, fake tickets, lack of credit and many other pain points, which can be solved through blockchain technology. . The traditional ticketing model requires the support of centralized facilities such as third-party ticketing platforms, and the information is extremely asymmetric. The new ticketing model with blockchain technology as the underlying layer can realize point-to-point transactions, and the entire process is transparent and traceable.

Blockchain electronic ticketing platform

Data source: compiled by Qianzhan Industry Research Institute

Financial field of blockchain + application : Reshaping the landscape of the financial industry

The open and non-tamperable attributes of blockchain technology provide the possibility for a decentralized trust mechanism and
has the potential to change the financial infrastructure. Various financial assets, such as equity, bonds, bills, warehouse receipts, fund shares, etc., can be integrated into the blockchain ledger and become digital assets on the chain. They can be stored, transferred, and traded on the blockchain, making it Before application in the financial fieldThe scenery is extremely broad.

By reducing costs in cross-border payments, securities transactions and compliance, blockchain technology can save banks US$15 billion to US$20 billion annually.

Blockchain + insurance can realize automatic claim settlement through the application of smart contracts. The management and operation costs of insurance institutions are high, and the data on the blockchain is authentic and reliable, which can effectively simplify the policy claims processing process. In addition, through blockchain technology, digital management of personal data can be realized, information authentication can be simplified, and data history can be traced.

Blockchain + Application in Entertainment: The blockchain development ecosystem is beginning to take shape, and the media industry may become the main beneficiary

Blockchain technology can be used in news, games, and picture copyrights It has been widely used in cultural and entertainment fields.

Blockchain technology will bring about huge changes in the underlying architecture of games and have a huge impact on the current game industry. Gamers currently have gatekeepers (centralized organizations) who determine prices, collect taxes, censor users, control content, and monetize data. Through decentralized platforms, consumers can socialize and transact without intermediaries, providing gamers with more control and flexibility in their gaming experience.

Blockchain + Application Supply Chain: It can improve the transparency of the supply chain and establish a new supply chain system

Blockchain technology can improve the transparency, traceability and security of the supply chain. Sex promotes a sense of trust and integrity. 1) The current supply chain has shortcomings such as long chain, many intermediate links, many joint interests, and opacity, which makes it very difficult to track and trace transactions, data is opaque, and process monitoring is unclear; 2)
Distribution of Blockchain Ledger technology can register the transfer of goods on the ledger as a transaction, identifying the various parties involved in the management of the production chain as well as product prices, dates, and locations.

❼ An easy-to-understand explanation of blockchain

A simple explanation of blockchain technology is as follows:

To put it simply: blockchain is the use of a package of existing A new generation of network system formed using advanced network technology. This network system has a new structure, a new mechanism, and unprecedented new value. Five major technologies or innovations are specifically used: encryption technology, P2P network technology, distributed storage technology, consensus mechanism, and smart contracts.

Essentially: it is a shared database, and the data or information stored in it is "unforgeable", "full-process traces", "traceable", "open and transparent" and "collectively maintained" ” and other characteristics. Based on these characteristics, blockchain technology has laid a solid foundation for "trust-based sales" and created a reliable "cooperation" mechanism. Yunchun has broad application prospects.

2. Openness.

In addition to encrypting the private information of all parties to the transaction, the blockchain data is open to everyone and provides a flexible script code system. The entire system information is highly transparent and within the rules specified by the system. Nodes cannot deceive each other.

3. Autonomy.

Consensus technology, smart contracts.