ubd区块链是什么东西,ubdc区块链大约几个月回本

请查看相关英文文档

『一』What is the blockchain and can it be invested in?

What is the blockchain and can it be invested in?

Blockchain technology is an emerging concept after the introduction of the Internet concept. It mainly solves the information asymmetry in society and provides decentralized services. Give an example to explain what blockchain technology is:

Usually we deposit cash into the bank. Every time we withdraw money, the transfer must go through the bank system to complete. So if we use blockchain technology To solve this problem, then our money does not need to be placed in the bank. When transferring money to others, we only need to transmit data on the chain. The transfer record data will be recorded by the entire network, and the consumption path of the amount can be found at any time. , there is no need to go through any intermediary to complete the intermediate recording.

This is just one of the scenarios where blockchain technology is applied. At present, the payment industry, gaming industry, lottery gambling industry, etc. are the most widely used blockchain technology.

In the nascent stage of the development of blockchain technology, many investors will naturally see the development potential and prepare to invest in blockchain. So how to invest in blockchain? Everyone knows that with the emergence of blockchain technology, digital currency will be generated, and the circulation of digital currency will generate value. Ordinary people can invest in blockchain by purchasing digital currency. Common digital currencies include Bitcoin, Ethereum, Yuzi, etc. However, the risk is extremely high. The return is much higher than that of stock investment, but the risk is also several times higher. Therefore, when investing in blockchain, the choice of digital currency is also very important. For novice investors, it is recommended to choose mainstream currencies, such as Bitcoin, Ethereum and Ripple. Their value has been basically recognized, they have a consensus mechanism, and the price will not drop significantly. However, the corresponding blockchain technology is still the best. Ethereum.

For professional risk control investors, you can choose to invest in blockchain companies, taking a fancy to their long-term value and tokens. Nowadays, blockchain companies will issue coins, which are so-called digital currencies. However, their value is zero and they have no actual circulation significance. Therefore, if you choose to invest in a blockchain company, you still need to see clearly the content of the company's projects, whether they can be truly implemented, and how much potential they have for changing human life in the future.

『二』Is blockchain reliable?

With the development of the times, there are now many science and technologies used in people’s lives, and blockchain is used very widely. An Internet technology, the purpose of blockchain is to verify the validity of information, so it has an anti-counterfeiting function. Blockchain is a combination of many data blocks in a chain structure in time order to maintain the reliability of the database. The application fields of blockchain are also relatively wide, and are often used in finance, the Internet, insurance, and some public welfare fields. Blockchain is divided into public and private. Its biggest features are high transparency, decentralization and collective maintenance. Because it is used too widely, it is difficult to use in daily life.Many people in life have doubts about blockchain and don’t know whether it is reliable.

Generally speaking, blockchain technology is not a scam. It is reliable, but it also has certain disadvantages. Blockchain technology can have great benefits if applied in legal fields, but once it goes astray and is introduced into illegal fields, it will have very serious consequences.

『三』Is the blockchain a pyramid scheme? Is it true to send candy?

You can’t beat him to death with a stick. Stick to your own principles and it’s OK if you don’t invest. I am doing SMCC

『四』 Is blockchain investment true or false

Legal objectivity:

Article 123 of the "Civil Code of the People's Republic of China", civil subjects enjoy the rights according to law intellectual property. Intellectual property rights are the exclusive rights enjoyed by obligees in accordance with the law with respect to the following objects: (1) works; (2) inventions, utility models, and designs; (3) trademarks; (4) geographical indications; (5) trade secrets; 6) Integrated circuit layout design; (7) New plant varieties; (8) Other objects specified by law.

Legal subjectivity:

Blockchain technology itself is not a scam, but it does not rule out that some people use blockchain as a cover to commit scams. Several problems exist in blockchain: 1. The problem of excessive blockchain size. With the development of blockchain, the volume of blockchain data stored by nodes will become larger and larger, and the storage and computing burden will become increasingly large. The heavier. Taking the Bitcoin blockchain as an example, the size of its complete data currently reaches about 71GB. If a user uses the Bitcoin Core client to synchronize data, it may not be possible to complete the synchronization for three days and three nights. Moreover, the data of the blockchain The volume is still increasing, which brings a great threshold to the operation of the Bitcoin Core client. 2. The problem of blockchain data confirmation time. The current blockchain system, especially the financial blockchain system, has the problem of long data confirmation time. Taking the Bitcoin blockchain as an example, the current confirmation time of a Bitcoin transaction takes about 10 minutes. In the case of 6 confirmations, you need to wait for about 1 hour. Of course, for credit card transactions, the confirmation time is 2 to 3 days. Bitcoin has made great progress, but it is still far from the ideal state. 3. Dealing with the problem of transaction frequency The blockchain system faces the problem of too low transaction frequency. Taking the Bitcoin blockchain as an example, the average size of each transaction is about 250 bytes. If the block size is limited to 1MB, the number of transactions that can be accommodated is 4,000. Calculated at the rate of one block every 10 minutes, 144 blocks can be generated every day. Yunzhou can accommodate 576,000 transactions. Divided by the number of seconds per day, 86,400, the Bitcoin blockchain can process up to 6.67 transactions per second. trade. Currently, the actual daily transaction volume on the Bitcoin blockchain is close to the system bottleneck (picture). If the expansion problem is not resolved, it may cause congestion and delays in a large number of transactions. Average number of transactions per Bitcoin block (Source: Block Yuan) Compared to Paypal’s overall number of transactions in the third quarter of 2013There were 729 million transactions, with an average of 93.75 transactions per second. Information from the official website of VISA, the world's largest payment card, shows that VisaNet achieved a processing capacity of 47,000 transactions per second in a 2013 test. Compared with several major payment networks such as Alipay, the Bitcoin blockchain is more like a newborn baby in terms of transaction processing frequency. Of course, this was also an early deliberate design by Satoshi Nakamoto. The Bitcoin block size was limited to 1MB to avoid the malicious behavior of rogue miners and have a negative impact on people. Bitcoin blockchain payment The reason why the Internet has grown to be worth billions of dollars today is that it is decentralized. 4. The development of blockchain is restricted by the current system. On the one hand, the decentralized and autonomous characteristics of blockchain dilute the concept of national supervision and have an impact on the current system. For example, digital currencies represented by Bitcoin not only pose a challenge to the country's right to issue currency, but also affect the transmission effect of monetary policy, weakening the central bank's ability to regulate the economy, causing monetary authorities to remain cautious about the development of digital currencies. On the other hand, regulatory authorities also lack full understanding and expectations of this new technology, and the establishment of laws and systems may lag behind, resulting in a lack of necessary institutional norms and legal protection for economic activities related to the use of blockchain, which inadvertently increases reduce the risks of market entities. 5. The integration cost of blockchain technology and existing systems is relatively high. For any innovation, existing institutions must ensure that it can not only create economic benefits, but also comply with regulatory requirements and connect with traditional infrastructure. Especially when deploying a new basic system, the cost of time, manpower, and material resources is very large, and the resistance encountered within existing traditional organizations is also not small. Of course, the existence of problems cannot hinder the development of blockchain. The proposal and in-depth research of technologies such as simple payment verification, side chain, and lightning network protocols have provided ideas for solving the above problems.

『Wu』 Is the blockchain insurance platform Mutual Assistance true or false?

It is true. First, let me introduce to you the main features of blockchain technology.
The main features of blockchain technology:
Decentralization
Due to the use of distributed computing and storage, there is no centralized hardware or management organization, and the rights and obligations of any node are equal. , the data blocks in the system are jointly maintained by nodes with maintenance functions in the entire system.
Openness
The system is open. In addition to the private information of the transaction parties being encrypted, the blockchain data is open to everyone. Anyone can query the blockchain data and information through the public interface. Develop related applications, so the entire system information is highly transparent.
Autonomy
The blockchain adopts consensus-based specifications and protocols (such as a set of open and transparent algorithms) to enable all nodes in the entire system to exchange data freely and securely in a trustless environment, making Trust in "people" has been changed to trust in machines, and any human intervention has no effect.
Information cannot be tampered
Once the informationAfter verification and adding to the blockchain, it will be stored permanently. Unless more than 51% of the nodes in the system can be controlled at the same time, modifications to the database on a single node will be invalid. Therefore, the data stability of the blockchain and Extremely reliable.
Anonymity
Because the exchange between nodes follows a fixed algorithm, the data interaction is trustless (the program rules in the blockchain will judge whether the activity is valid by itself), so the counterparty does not need to disclose it through the The identity method allows the other party to trust themselves, which is very helpful for the accumulation of credit.
At present, there are many online mutual aid platforms in China, but the only limitation for real implementation is the Tongxin Mutual Aid Platform. It is the first online mutual aid platform in China to apply blockchain technology and implement it. With the help of blockchain technology, it can achieve the goal of decentralization. Centralize information sharing, innovate to achieve comprehensive and transparent operations, and build a fair, just, open, safe and efficient open mutual aid information service platform for the public.

『Lu』 Several of my friends are playing with blockchain, is it reliable?

Blockchain is also a relatively new thing, and there are many people. They all pay special attention to blockchain. Blockchain can be loved by many people and can also receive investment from many people. Many people particularly want to invest in blockchain and also hope to make themselves better by investing in blockchain. Get more bang for your buck.

There are many people who want to invest in the blockchain, but they may not necessarily understand the blockchain, and they do not know how to operate the blockchain. If everyone around them invests in the blockchain, they themselves If you invest, you may suffer relatively large losses. Some people may have this question: Several of my friends are playing with blockchain, is it reliable? In fact, I think blockchain is not necessarily reliable. There are three main reasons why I say this:

First, blockchain is easily affected by the market.

The reason why I think blockchain is not necessarily reliable is because I think blockchain is easily affected by the market. When the market fluctuates greatly, the value of blockchain may increase. decline, and it may not be able to recover as soon as possible. If some people invest because of the value of the blockchain, they may suffer relatively large losses, and they may lose all their money.

The above is my opinion.

『撒』 Is blockchain a pyramid scheme? Is blockchain a disguised pyramid scheme?

Blockchain is a new technology and it is not a disguised pyramid scheme. It is just claimed by many pyramid schemes as " "Blockchain" actually does not have any technology, it is just a pyramid scheme in the name of "blockchain". The country has issued multiple announcements to crack down on this type of pyramid scheme. The following is Xinhuanet's report on blockchain MLM:

Blockchain is not equivalent to virtual currency, and there are also security risks. Behind the popularity, there are exaggerated publicity campaigns with "ulterior motives". Only by removing the flashiness can the blockchain return to its true application value.

Invest 80,000 yuan and it will become 800,000 yuan in three months? Shenzhen police cracked aA huge fund-raising fraud case. Under the guise of blockchain concepts and 10 times earnings, thousands of investors have fallen deeply into it, with the amount involved reaching 307 million yuan. Under the "mysterious veil" of the blockchain, criminals have taken advantage of the opportunity to use their tricks, and the blockchain has become a "signature" for economic crimes such as fraud and pyramid schemes.

Why has the blockchain been repeatedly “misused” by illegal activities such as pyramid schemes and fraud? Apart from being “unclear”, what is the “function” of blockchain technology itself? Since the beginning of this year, with the intensification of supervision and the cooling of the trend of currency speculation, new opportunities have been brought to the development of blockchain. How is the implementation of blockchain commercial "applications" now? Reporters from "Lookout" News Weekly recently conducted an investigation into this.

When the three-month "fund release period" promised by the trading platform expired and the staff started "kicking" people in the QQ group, Tang Haiyan, who lives in Bao'an District, Shenzhen, realized that she might have been cheated. .

Previously, Tang Haiyan invested 80,000 yuan to buy a virtual currency called "Puyin Coin" under the introduction of a classmate. "The other party said that this currency is the most advanced blockchain technology at the moment, with Tibetan tea as collateral, and he also showed me a 'technical white paper'. I didn't understand blockchain, so I didn't read it carefully."

Although he doesn’t know much about blockchain or virtual currencies, Tang Haiyan is full of expectations for the high investment returns. She told reporters that the company that issued the "Common Silver Coin" would regularly split the virtual currency at a ratio of 1:10, which means that each split would increase the value of the "Common Silver Coin" in the hands of investors by 10 times. . As long as it is split once, the 80,000 yuan she invested is equivalent to buying "common silver coins" worth 800,000 yuan, and she can get huge profits by selling them on the trading platform.

According to the rules of the trading platform, the "common silver coins" just purchased cannot be traded immediately. They must be frozen on the platform for three months before the "release period" can begin. However, when three months passed, Tang Haiyan not only failed to double her assets, but also the 80,000 yuan frozen on the platform could no longer be used for transactions.

“Other investors began to question the authenticity of this investment in the QQ group. As a result, the company staff kicked these investors out one by one. I felt bad.” She said.

Facts also proved Tang Haiyan’s intuition. At the end of March 2018, Shenzhen police uncovered a huge fund-raising fraud case, with the amount of fraudulent funds reaching 307 million yuan. In this case, the Shenzhen Puyin Blockchain Group Co., Ltd. involved in the case used the "blockchain + Tibetan Tea" model to issue virtual currency and defraud public deposits. Tang Haiyan was one of thousands of victims. .

Shenzhen police investigation found that the company claimed that investors could put "common silver coins" on the virtual trading platform "Jubi.com" to earn the price difference

. In fact, the change in its buying and selling price was caused by the company using investors' investment funds to perform behind-the-scenes operations, and once raised the price of "common silver coins" from 0.5 yuan to 10 yuan, allowing investors to taste some sweetness. After a large number of investors entered the market, the companyBy maliciously manipulating the price trend of "common silver coins" and constantly cashing out, the "common silver coins" in the hands of investors are ultimately worthless.

Since 2018, engaging in fraud and pyramid schemes under the banner of blockchain has become a commonly used "routine" in new criminal methods. In April 2018, Jinan police busted a pyramid scheme gang under the guise of "western development", "national poverty alleviation", "original stocks", "blockchain" and "e-commerce", arrested more than ten main suspects, and froze the funds involved in the case There were more than 100 accounts, and more than 300 million yuan of funds involved were seized.

Jinan police introduced that Huileyi e-commerce company designed fake virtual disks on the Internet and released so-called "treasure coins" and "precious coins" on the grounds that the country is vigorously developing the big data industry. and other virtual currencies.

They first use the gift as a guise to give a certain amount of virtual currency to newly joined MLM personnel, with the price of each coin being tens of yuan, and then use artificial manipulation to increase the value of the virtual currency to more than 100 yuan or even hundreds of yuan. Yuan, attracting people who do not know the truth to join, and finally "cut leeks" through the cyclical fluctuations of the so-called "devaluation" of virtual currencies, repeated over and over again, and ultimately achieve the purpose of seeking illegal benefits.

In Xi'an, the local police also successfully cracked a huge online pyramid scheme under the banner of blockchain. According to the police, the criminal suspect Zheng paid a high salary to organize network platform administrators Zhang, Li and other 9 people. Since March 28, 2018, he has used collective pyramid schemes and online pyramid schemes as means to sell coins at a price of 3 yuan each. Sell ​​virtual "Datang Coins" on the "Consumption Era" online platform and control the appreciation rate;

At the same time, hold promotion meetings in multiple cities at home and abroad to attract members, and set up There are 28 levels of agents in charge. In just 18 days, the gang has developed a total of more than 13,000 registered members. It has been found that the case involves 31 provinces, municipalities, and autonomous regions across the country, and the funds involved are as high as 86 million yuan.

The "Tencent 2017 MLM Situation Awareness White Paper" released by Tencent Security Joint Laboratory stated that in recent times, various overseas capital disks, virtual currencies, ICO (blockchain project initial public offering of tokens) Financing) projects emerge in an endless stream, which hide many risks such as illegal issuance, false projects, cross-border money laundering, fraud, pyramid schemes, etc., causing a large amount of funds to flow overseas. Once they collapse, run away, or lose contact, investors often have no way to complain and lose money. recover. For example, Baichuan Coin, Mark Coin, Beta Coin, Dark Coin, etc.

Reporters from "Lookout" News Weekly conducted interviews in Guangdong, Shandong, Shanghai and other places and learned that most people know that the concept of blockchain is very popular, but they are "uninformed" about the specific functions of blockchain. There are different opinions: some people think it is used for "investment and financial management" and "buying and selling currency", while others think it is "a major invention of the same magnitude as the steam engine". Some entrepreneurs are gearing up to seize this "once-in-a-lifetime opportunity to get rich."

Many people in the industry said that it is precisely because people have many misunderstandings about blockchain that lead to illegal divisions.There is an opportunity for investors to take advantage of it and fish in troubled waters to mislead investors.

First, blockchain is not equal to virtual currency. As of the end of last year, the number of domestic ICO participants and total transaction volume had doubled. A large number of digital currency exchanges have fled overseas, and the agency investment model has involved more ordinary people in high-risk investments.

Many industry self-media and famous speakers have formed interest alliances with issuers, digital exchanges, etc. to endorse the "Air Coin" project platform and create public opinion. In December last year, the People's Bank of China and nine other departments characterized ICOs as "suspected of illegal fund-raising, financial fraud, pyramid schemes and other illegal and criminal activities."

During the interview, many people told our reporter that the existence of tokens has built a set of equity mechanisms for the development of blockchain technology. This mechanism is indispensable for stimulating the prosperity of blockchain applications. of. "Market practice in the past five years has proven that blockchain applications without equity mechanisms are like computers without Internet connectivity and a market economy without currency. The application scenarios and development speed are greatly reduced." said an investor in Shanghai. .

In fact, tokens represented by Bitcoin are only one of the earliest products to verify blockchain technology. There is no equivalence between the two, and the existence of tokens has already affected the blockchain technology. The development of the chain has obvious negative effects.

At present, more and more people in the industry are beginning to think about whether the development of blockchain must rely on the issuance of tokens to achieve incentives. Guo Dagang, secretary-general of the Beijing Internet Finance Industry Association, told this reporter that the so-called incentive mechanism is just a theoretical basis for project parties to issue tokens.

Secondly, blockchain is not omnipotent and there are risks in its security. Blockchain is generally considered to be able to achieve three functions:

First, the data stored on the blockchain cannot be tampered with or forged, and the data has high credibility and credibility; second, The entire transaction process is traceable, enabling accurate tracking of responsibilities; third, smart contracts embedded in the blockchain can be automatically executed based on the contract, thereby improving work efficiency and reducing the risk of default. The industry generally believes that blockchain has broad application prospects in finance, logistics, trade and other fields.

In fact, blockchain is not omnipotent, and its functions also have many limitations. It is generally believed that based on its cryptographic characteristics, if you want to tamper or forge on the blockchain, you theoretically need to control more than 51% of the nodes to achieve it. When there are enough nodes in the blockchain, this trust creation mechanism with widespread public participation will be difficult to tamper with.

However, in reality, digital currency exchanges are frequently attacked or even stolen. On June 20, 2018, South Korea's Bithumb exchange announced on its official website that the exchange was attacked by hackers and cryptocurrency worth 35 billion won, or approximately US$32 million, was stolen.

Ji Xinhua, known as China's first generation "hacker", said that the blockchain will continue to face attacks, and the process of uploading data to the chain is prone to information leakage. Some people in the industry are also worried that once the super computing power of quantum computing is realized, it will alsoA direct impact on the blockchain.

Thirdly, the popularity of blockchain is not entirely true. Data shows that from the end of 2017 to the beginning of 2018, more than 300 self-media companies mainly focused on ICO projects appeared, which became an abnormal phenomenon worth noting.

(7) Is the UBDC blockchain real? Further reading:

On August 24, 2018, the China Banking and Insurance Regulatory Commission website released a risk A reminder to remind the general public to guard against illegal fund-raising in the name of "virtual currency" and "blockchain".

The original text is as follows:

"Risk Tips on Preventing Illegal Fund-raising in the Name of "Virtual Currency" and "Blockchain""

China Banking and Insurance Regulatory Commission, Central Network The Office of Information Technology, the Ministry of Public Security, the People's Bank of China, and the State Administration for Market Regulation remind:

Recently, some criminals have issued so-called "virtual currencies" and "virtual assets" under the banner of "financial innovation" and "blockchain". ""Digital assets" and other methods absorb funds and infringe on the legitimate rights and interests of the public. Such activities are not really based on blockchain technology, but are actually hyping up the blockchain concept to conduct illegal fund-raising, pyramid schemes, and fraud. They mainly have the following characteristics:

1. Obvious networking and cross-borderization. Relying on the Internet and chat tools for transactions, and using online payment tools to receive and disburse funds, risks have a wide scope and spread quickly. Some criminals rent overseas servers to build websites, essentially carry out activities for domestic residents, and remotely control illegal activities.

Some individuals claim in chat tool groups that they have obtained investment quotas for high-quality overseas blockchain projects and can invest on their behalf, which is most likely a fraudulent activity. Most of the funds for these illegal activities flow overseas, making supervision and tracking very difficult.

2. Strong deception, temptation and concealment. They use hot concepts to create hype and fabricate numerous "high-level" theories. Some even use celebrity V's "platform" propaganda, and use airdrops of "candy" as temptations, claiming that "currency values ​​only rise but not fall" and "the investment cycle is short. "High returns, low risks", which is highly deceptive.

In actual operation, criminals illegally make huge profits by manipulating the price trend of so-called virtual currencies behind the scenes and setting profit and withdrawal thresholds. In addition, some criminals also issue tokens in innovative forms such as ICO, IFO, and IEO, or conduct virtual currency speculation in the form of IMO under the banner of the sharing economy, which is highly concealed and deceptive.

3. There are various illegal risks. Through publicity, criminals use "static returns" (profits from currency appreciation) and "dynamic returns" (profits from offline development) as bait to attract the public to invest funds, and induce investors and development personnel to join in, constantly expanding the capital pool. , with characteristics of illegal fund-raising, pyramid schemes, fraud and other illegal activities.

Such activities use "financial innovation" as a gimmick, but are essentially a Ponzi scheme of "borrowing new and repaying old", making it difficult to maintain long-term capital operations. The general public is requested to view the blockchain rationally and not blindly believe in God.Hua Luan Chui's commitment is to establish correct currency concepts and investment concepts, and effectively improve risk awareness; we can actively report and report any illegal and criminal clues discovered to the relevant departments.

『8』Does China have a real digital currency with blockchain technology?

Blockchain is a combination of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies New application models. Blockchain was born from Satoshi Nakamoto's Bitcoin and is an important concept of Bitcoin. It is essentially a decentralized database and serves as the underlying technology of Bitcoin.
The first book on blockchain research in China is called "Blockchain: Defining a New Pattern of Future Finance and Economics", published by the Currency Blockchain Research Center. Co-produced with blockchain is digital currency. As the price of Bitcoin continues to rise, various digital currencies with the name of blockchain have begun to emerge one after another. Among the current domestic blockchain projects, many have already conducted ICOs. However, most of them use ICO as an excuse to crowd-fund a large amount of money and speculate on the currency. There are very few that truly rely on blockchain technology for practical applications. Nowadays, there are real applications in China and the mainnet has been launched. Yinlian can be regarded as a pioneer in this regard. If you look at it this way, the real digital currency of blockchain technology should be the practical application of blockchain technology.