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㈠ Some blockchain public accounts have been blocked. Is the deadline for blockchain media approaching?
Some blockchain public accounts are suspected of publishing ICO and virtual currency transaction speculation. The message has been permanently blocked! This does not mean that the end of the blockchain media has arrived, but it shows that the government has begun to seriously manage the blockchain market! The current currency circle that relies on blockchain is really full of chaos and demons are dancing around. It’s really time for higher-level departments to take charge!
But many elderly people have invested everything, tens of thousands, hundreds of thousands or even millions. Some even asked others to borrow money or even sold it. If they lose their houses in the end, I’m really worried about where these old people will go!
I am Vanilla Pearl,
Psychological growth, spiritual improvement, we go together all the way!
㈡ Why are there so many "scams" in the currency circle that relies on blockchain technology?
Behind any investment with an unusually high return rate, there may be a hidden meaning of "you want to His interest, but he wants your principal" type of scam.
On July 4, 2018, a recording of Li Xiaolai, known as "China's richest man in Bitcoin", was exposed, causing an earthquake in the currency circle. In the nearly hour-long recording, Li Xiaolai made sharp comments on many big players in the currency circle, and also gave "step-by-step" instructions on how to cut off the leeks of retail investors.
Although my country has rectified and banned ICOs according to law in September last year, it is not uncommon for project parties to avoid legal supervision through foreign registration and underground ICO models. This requires regulatory authorities to increase their efforts in governance, establish sound industry standards, and promote the good development of the blockchain industry.
For investors, on the one hand, they must keep their eyes open and not blindly follow the temptation of so-called "Internet celebrities". If you really believe Li Xiaolai’s remarks denying value investing and advocating speculation, then you are playing into his trap and will eventually become a leek that can be harvested by others. On the other hand, you need to invest rationally. Behind any investment with an abnormally high return rate, there may be a scam like "you want his interest, but he wants your principal".
Content source ifeng.com
㈢ Several people around me have been deceived by blockchain
Nowadays, the concept of "blockchain" is very popular, and blockchain scams are also coming. Many people who dream of getting rich overnight are led into a "cage" and become "leeks". Harvest.
Trap 1: Blockchain is about issuing coins to make money
Fraud tricks
Blockchain is an epoch-making technological change. This is to guide you through The last train on the road to wealth and freedom. If you miss ten thousand times of Bitcoin, do you still want to miss ten thousand times of XXX coins? ××× currency, Bitcoin is even more awesome, its potential is unlimited! Today, if you invest in our ××× coins, you can quickly achieve financial freedom.
The truth
Equating "blockchain" with "issuance of currency" is a stolen concept. Blockchain is a technology, and currency issuance is an act derived from blockchain technology. At present, the vast majority of blockchain applications that focus on issuing and speculating coins are suspected of illegal fund-raising.
Trap 2: Buying coins with the promise of high returns
Fraud routine
If you miss ten thousand times of Bitcoin, you will also miss ten thousand times of ××× coins ? ×××coin is more powerful than Bitcoin, and its potential is infinite!
The truth
From directly setting up a website to sell coins and collect money, to cloning Bitcoin and renaming junk altcoins, to the so-called ICO... In recent years, scammers have We are also advancing with the times and upgrading technology. However, the core of these routines will always remain the same - I can make you rich overnight. But the key point is that if the rewards were really that great, I would have made a fortune long ago. How could it be your turn to be a non-relative? You are not his father!
Trap Three: Decentralization can solve all problems
Fraud Routine
Join us, decentralized blockchain will change the world! We currently live in a centralized world: when you transfer money from the bank, you need to transfer it from the central system; when you make suggestions to the company, you need to report to the supervisor first... If it is decentralized, you can bypass the center and directly Do what you want to do, and there will no longer be a center to constrain you. Isn't this a way to change the world?
The truth
Decentralization is one of the most valuable features of the blockchain, but this feature is achieved by sacrificing its network efficiency, which not only decentralizes but also improves efficiency. There is currently no perfect solution. Moreover, decentralized applications are not suitable for all fields. It is a misunderstanding and trap to regard decentralization as "universal".
Trap 4: Having a white paper means practical application
Fraud tactics
In order to gain the trust of the masses, scammers will often release a white paper and Promote: "Utopias that are divorced from reality are useless. We are a project with real applications. And we have released our own white paper."
In the white paper presented, the founding team's Each member has a high degree of overseas education and has won a certain award; the technology of the project is described as very mature and has been applied. However, most of the white paper is written in English, and some technical terms are also difficult to understand.
The truth
In fact, if you look online, you will find that the academic qualifications of many team members are lies. In addition, blockchain technology is still in its early stages, and it is difficult to implement its applications. If you rely solely on a white paper to claim that there is an application, it is a kind of deception in itself.
Trap Five: Celebrity Platform is a Good Project
Fraud Routine
Some people say that blockchain applications are difficult, but our project is different from others. It is obviously better than other projects, which can be seen from the background strength behind us. You see this is famousInvestors ××× and ××× are coming, this is a blockchain technology giant and very well-known in the industry. You can check their information online and you will know how powerful they are.
The truth
Looking for celebrity platforms has become a common fraud routine for many "blockchain scams". Because he doesn't have much strength, he can only rely on celebrities to "support the scene." Moreover, the possibility of celebrities being "touched" is not ruled out.
Trap 6: You can make money just by having a mining machine
Fraud routine
In addition to buying our tokens, you can also buy our mining Machine, lie down and make money. Our tokens can be produced through this mining machine, and when the tokens are circulated in the market, we can wait for appreciation and make money.
The truth
First of all, mining with a mining machine requires costs, it consumes a lot of electricity, and the electricity cost is very high. Secondly, although you can get some tokens through mining, the price of the tokens will continue to fluctuate, and you may lose a lot of money.
In addition, ICO has been banned by the country, but in order to achieve the purpose of issuing coins, some blockchain projects have come up with the idea of selling mining machines to allow investors to mine and hold coins. This IMO method has been characterized as a "disguised ICO" and is also an illegal fund-raising behavior.
Trap 7: Collecting coins from WeChat transactions
Fraud routines
Some people make their circle of friends very impressive, making novice users feel trustworthy. The credibility is very high. Then he pretends to be a user who collects coins off-site and asks the other party to transfer the token first and then pay. After receiving the token, he turns his back and refuses to recognize the person, and then continues to look for the next prey.
The truth
Since the current token address cannot be associated with the user's identity, it is basically impossible to retrieve it after being deceived. Moreover, virtual currency is not legal tender. Even if the police call the police, the case will not be filed.
Summary reminder
The "high-end" blockchain is not something ordinary investors can play with. In the face of obscure professional terms and myths about wealth, it's best to stay away.
Moreover, the tricks of scammers are also advancing with the times, and they will use various means to improve their deception capabilities. Investors should remain vigilant and never be fooled by exaggerated profit returns and "celebrity effects". They must remember: high returns come with high risks, and prudent investment is king!
Excerpted from the Internet
㈣ Blockchain is abandoning ordinary people
I have been thinking about it these days. It can be seen that the development of blockchain technology is becoming more and more complex, and it is becoming more and more difficult for ordinary people to understand. It is far more than the so-called uniqueness, non-tamperability, anonymity and other concepts before. These concepts are all blocks The underlying logic of the chain, and now even the street vendor can explain these logics.
Looking back on the 2016 bull market, concepts such as ICO, forked coins, anonymous coins, and public chains are still easy to understand. Because the market is small, few institutions pay attention to it, and any coin issued can go to heaven. , such as Litecoin, which is the most successfulIn fact, its success is largely due to the slogan "Bit Gold, Lite Silver".
Looking at this bull market again, defi, nft, metaverse, various derivatives, ido, ieo, ifo, Internet of Things, web3.0, cross-chain sidechains, etc., concepts are emerging one after another. It is far beyond the comprehension of ordinary people, let alone a newcomer. Many newcomers don’t even understand the principles of Bitcoin, let alone belief in it.
defi, nft, metaverse (that is, blockchain games), these are currently relatively well-established tracks, but how many people really understand the value behind them? If you just follow what others say, you will be the one who takes over in the end. The currency circle is a place of zero-sum game. If you don’t know who is losing money, then you will definitely be the one who loses money in the end.
In addition, this bull market is already a bull market for institutions, and 2016 was a bull market for retail investors. Now that the big stick has been successfully taken over by institutions, it will become increasingly difficult for retail investors to make money in this market in the future. . Think about a well-regulated and transparent stock market. Retail investors can’t beat institutions. So what if there is no regulation?
However, the currency circle is neither Big A nor US stocks, but a combination of the two. Because Chinese and American investors dominate, it can be seen that the currency circle has two characteristics at the same time, and as The de-Chineseization of the currency circle is expected to become more and more stable in the future, and even lead the industry in favor of US stocks.
However, de-Chinaization is also heartbreaking. Looking at the top ten projects in the currency circle, they are basically dominated by foreign countries. It can be said that they were ruined by themselves and gave up their pricing power. Just like chips, this will definitely be a bottleneck in the future. Look at the powerful Ethereum! How to rush?
There are many shortcomings and strategies!
#BTC[超话]# #欧易OKEx# #digital currency#
㈤ The collective surge in blockchain concept stocks, is it a pie or a trap
The IT industry has been constantly hyping concepts! It’s not that magical after all! Of course, those who can swindle money in China are good comrades.
㈥ How to interpret blockchain in the simplest way
Everyone can hear the word blockchain every day recently, so what is blockchain? Explanations such as "distributed, difficult to tamper, and consistent storage" are too technical and dry. Let me give you some popular science here: Blockchain is mainly designed to solve the trust problem between individuals who do not trust each other.
To give a popular example: It is said that Lao Li and Lao Wang live in the same village. Lao Li is a little short of money recently and wants to borrow some money from Lao Wang. As for Lao Wang, he was worried about what would happen if he defaulted on the loan after borrowing money from Lao Li, so he called in the "highly respected" village chief. However, thinking about it, the village chief couldn't be trusted either. The village chief had even stolen other people's sweet potatoes in the past! what to do?
The blockchain method is: Lao Wang lent 1,000 yuan to Lao LiFinally, he used a loudspeaker to shout in the village, "I, Lao Wang, borrowed 1,000 yuan from Lao Li today, everyone should quickly record it." So everyone in the village recorded it in their own account books and kept it carefully. . This is good, Lao Li can't rely on him anymore. Even if there are dishonest people in the village, there are still many good people. Lao Li can't find everyone in the village to secretly erase his loan records. In this way, the blockchain solved the trust problem of borrowing money between Lao Wang and Lao Li, who did not trust each other.
Before the emergence of blockchain, how did we solve the problem of trust between individuals who did not trust each other? It's simple, just find a "witness" who is "highly respected" and trusted by both parties, such as the village chief in the story, such as Alipay between the buyer and seller, such as the notary office, etc. However, it is possible that such "witnesses" may not always be honest, so the blockchain simply allows everyone to act as a witness.
Lao Wang is relieved, but Lao Li has a headache! Lao Li has to wait until everyone in the village has recorded the money before he can get the money lent to him. There is no uncle or aunt in the family who is slower. Therefore, there is still a certain distance between blockchain and application, and efficiency issues need to be significantly improved.
Recall how you usually trade with others: you can choose a beautiful dress in a physical store, confirm that the other party’s clothes are of good quality, and the other party confirms that your money is real money. , then we will pay and receive the goods face to face.
What if we are thousands of miles apart and neither know nor trust each other but still want to trade? Then there needs to be a third party that we all trust, which is the so-called consensus mechanism. For example: you can complete the transaction through a third-party witness guarantee on Taobao. The money is first given to Alipay - Alipay collects the payment and lets the seller deliver the goods - the seller delivers the goods - you confirm receipt - Alipay then gives the money to the seller.
However, what if this centralized organization does evil and Dad Ma tears up the account books and refuses to admit that you gave the money, or joins forces with the seller to defraud you of money?
Or maybe the government lends you 1 million, and finally pays you back by issuing excessive currency. The 1 million shrinks to 10,000, and you bear the loss of inflation. What should you do? ?
Is there a third party that is not controlled by any government or organization, can complete arbitration in an open and transparent manner, has records that will not be tampered with, and has no risk of running away?
Don’t worry, our protagonist’s blockchain technology solves this problem - the transactions between you can be witnessed by everyone in this blockchain system, and it will be recorded in everyone’s small ledger. Your deal. If B denies receiving money from A, or if A says that he borrowed 300 yuan, passers-by A, B, B, and D will question him. How exactly is it done?
1) The system issues a small account book to everyone so that everyone can keep accountsRights, we call distributed accounting.
2) In order to encourage everyone to help others keep accounts, the system code is set to reward tokens such as Bitcoin to the keepers. In order to prevent a group of people from being blocked in keeping accounts, the tokens are also set to There are only a limited number of A, B, C and D who need to be calculated through the mechanism specified by the system. Only the fastest and best calculation can obtain the right to keep accounts. After recording, it is broadcast to everyone through the system. Everyone copies the same ledger. This is obtained through calculation. The reward process is called mining, and passers-by A, B, B, and D who keep accounts are the miners.
3) One day, A, who originally recorded the transaction, Game Over, but the ledger still exists in other people's ledgers. Neither A nor B can deny it. We have written in code how to arbitrate and distribute, without the need for banks, governments, enterprises and other centralized organizations to serve as third-party witnesses (decentralization), and the direct point-to-point (P2P) transaction method is called decentralization.
4) The system packages multiple transactions into blocks and links them in chronological order to become the final ledger that everyone has. This is the blockchain technology
In fact, the block chain The simple understanding of blockchain as a ledger is only the simplest interpretation. If each of its characteristics is separated, it can be applied in many fields.
Now the traditional financial industry, securities firms, and investment institutions are rushing to enter the Internet of Things, games, storage, copyright, anti-counterfeiting, credit reporting, payment, prediction markets (gambling, etc.), communities and many other fields. The exploration and application of blockchain has already begun.
The Internet allows everything to be connected. Can blockchain make everything connected trustworthy?
Let me explain the blockchain using the natural stones of heaven and earth:
All science, philosophy, morality... heaven and earth are included. Every thing and every culture is related to the Taoism of heaven and earth.
Blockchain naturally cannot escape the fate of heaven and earth: that is, smooth, random, infinite, and impermanent.
It is this strange stone, and the overall data movement on its surface. First, the whole is intangible. Second, the lines and points adhere to a pattern: the path of impermanence. That is to say, every line and every point they pursue is not a closed goal or a limited purpose. I can understand it better when I say this: when a painter paints a chicken, it has a purpose and an ending, while strange rocks, when created by nature, have no ending. Therefore, the phase is not closed, and the line and point data are not terminated. The technology of block connection is this way of destiny. Impermanence is invisible and has no end. (No centralization means formlessness, no closed form, no closed structure, and no closed mind...just act like a "stone").
Confucius in Qufu, ShandongLingshi Pavilion
Hello everyone, I am Pippi. I will use a few life examples to explain to you what blockchain is?
A decentralized, tamper-proof, distributed storage data block linking system that uses encrypted information as the link address is called blockchain
This thing is originally There are many high-tech composite products that cannot be simplified. No matter how simple it is, it takes a long paragraph, and it may not be clear.
The strict definition of blockchain refers to the design based on cryptography technology. Consensus mechanism, a distributed database technology in which multiple nodes in a peer-to-peer network jointly maintain a continuously growing, chained list ledger constructed of timestamps and ordered record data blocks. This technical solution allows any number of nodes participating in the system to calculate and record all information exchange data in the system over a period of time into a data block (block) through cryptographic algorithms, and generate the fingerprint of the data block for linking ( chain) and check the next data block, all participating nodes in the system jointly determine whether the record is true.
Blockchain is a general term for technical solutions similar to NoSQL (non-relational database). It is not a specific technology. Blockchain technology can be implemented through many programming languages and architectures. . There are also many ways to implement blockchain. Common ones currently include POW (Proof of Work), POS (Proof of Stake), DPOS (Delegate Proof of Stake), etc.
The concept of blockchain was first proposed in the paper "Bitcoin: A Peer-to-Peer Electronic Cash System" by the author who calls himself Satoshi Nakamoto (Satoshi Nakamoto) individual (or group). Therefore, Bitcoin can be regarded as the first application of blockchain in the field of financial payments.
[Popular explanation]
No matter how big the system or how small the website, there is usually a database behind it. So who will maintain this database? Under normal circumstances, whoever is responsible for operating the network or system will maintain it. If it is a WeChat database, it must be maintained by Tencent's team, and Taobao's database must be maintained by Alibaba's team. Everyone must think that this approach is natural, but this is not the case with blockchain technology.
If we imagine the database as a ledger: Alipay, for example, is a typical ledger, and any change in data is an accounting type. We can think of database maintenance as a very simple accounting method. in blockchainThe same is true in the world of China. Everyone in the blockchain system has the opportunity to participate in accounting. The system will select within a period of time, maybe within ten seconds, or maybe ten minutes, to select the person with the fastest and best accounting during this period. This person will do the accounting, and he will combine the changes in the database during this period with Changes in the ledger are recorded in a block. We can imagine this block as a page of paper. After confirming that the record is correct, the system will link (chain) the data fingerprint of the past ledger to this paper, and then This piece of paper is sent to everyone else in the entire system. Then the cycle starts over and the system looks for the next person who can do the accounting quickly and well, and everyone else in the system gets a copy of the entire ledger. This means that everyone in this system has exactly the same ledger. This technology is called blockchain technology, also known as distributed ledger technology.
Since everyone (computer) has exactly the same ledger, and everyone (computer) has exactly the same rights, there will be no problem due to a single person (computer) losing contact or going down. The entire system collapses. Since there are exactly the same ledgers, it means that all data is open and transparent, and everyone can see the digital changes in each account. Its very interesting feature is that the data in it cannot be tampered with. Because the system will automatically compare, it will consider the account books with the largest number of the same number as the real account books, and the small number of account books with different numbers as others are false account books. In this case, it makes no sense for anyone to tamper with their own ledger, because unless you can tamper with most of the nodes in the entire system. If the entire system has only five or ten nodes, it may be easy to do, but if there are tens of thousands or even hundreds of thousands of nodes, and they are distributed in any corner of the Internet, unless someone can control most of the computers in the world , otherwise it would be unlikely to tamper with such a large blockchain.
[Elements]
Combined with the definition of blockchain, we believe that it must have the following four elements to be called a public blockchain technology. If it only has the first three points elements, which we will consider as private blockchain technology (private chain).
1. Point-to-point peer-to-peer network (peer-to-peer power, physical point-to-point connection)
2. Verifiable data structure (verifiable PKC system, non-tamperable database)
3. Distributed consensus mechanism (solve the Byzantine generals problem and double payment)
4. Nash equilibrium game design (cooperation is an evolutionarily stable strategy)
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[Characteristics]
Combined with the definition of blockchain, blockchain will realize four main characteristics: decentralized (Decentralized), trustless (Trustles)s), collective maintenance (Collectively maintain), reliable database (Reliable Database). And the four characteristics will lead to two other characteristics: open source (Open Source) and privacy protection (Anonymity). If a system does not possess these characteristics, it will not be considered an application based on blockchain technology.
Decentralized: The entire network has no centralized hardware or management organization. The rights and obligations between any nodes are equal, and the damage or loss of any node will not affect it. operation of the entire system. Therefore, the blockchain system can also be considered to have excellent robustness.
Trustless: Each node participating in the entire system does not need to trust each other for data exchange. The operating rules of the entire system are open and transparent, and all data contents are also public. , therefore within the rule range and time range specified by the system, nodes cannot and cannot deceive other nodes.
Collectively maintain: The data blocks in the system are jointly maintained by all nodes with maintenance functions in the entire system, and these nodes with maintenance functions can be participated by anyone.
Reliable Database: The entire system will be divided into databases so that each participating node can obtain a copy of the complete database. Unless more than 51% of the nodes in the entire system can be controlled at the same time, modifications to the database on a single node are invalid and cannot affect the data content on other nodes. Therefore, the more nodes and stronger computing power participating in the system, the higher the data security in the system.
Open Source: Since the operating rules of the entire system must be open and transparent, for the program, the entire system must be open source.
Privacy protection (Anonymity): Since nodes do not need to trust each other, there is no need to disclose their identities between nodes. The privacy of each participating node in the system is protected. protected.
[One of the meanings of blockchain: Solving the Byzantine Generals Problem]
The core problem solved by blockchain is not "digital currency", but information asymmetry and inconsistency. Under a certain environment, how to establish a "trust" ecological system that satisfies the occurrence and development of economic activities. This problem is called the "Byzantine Generals Problem", also known as "Byzantine Fault Tolerance" or the "Two Armies Problem". This is a difficult problem faced when information machines interact in a distributed system, that is, any point in the entire network No node can trust the one it communicates withHow can we create a consensus basis for secure information exchange without worrying about data tampering? Blockchain uses an algorithmic proof mechanism to ensure the security of the entire network. With it, all nodes in the entire system can automatically and securely exchange data in a trustless environment. For more introduction, please see "Bitcoin and the Byzantine Generals Problem".
[The second meaning of blockchain: realizing cross-border value transfer]
At the beginning of the birth of the Internet, the earliest core problem to be solved was information production and transmission. We can transfer information through the Internet It can be quickly generated and copied to every corner of the world with a network, but it still cannot solve value transfer and credit transfer. The so-called value transfer here refers to a method that everyone in the network can recognize and confirm, accurately transferring a certain part of the value from a certain address to another address, and it must be ensured that when the value is transferred, the original address is reduced The transferred portion, while the new address increases the value transferred. The value mentioned here can be a monetary asset, or some kind of physical asset or virtual asset (including securities, financial derivatives, etc.). The results of this operation must be recognized by all participating parties, and the results cannot be manipulated by any one party.
There are also various financial systems in the current Internet, and there are also many payment systems provided by government banks or third parties, but they still rely on centralized solutions. The so-called centralized solution is to put all value transfer calculations on a central server (cluster) through the endorsement of a certain company or government credit. Although all calculations are automatically completed by programs, this centralization must be trusted. person or institution. In fact, through centralized credit endorsement, credit can only be limited to certain institutions, regions or countries. It can be seen from this that the fundamental problem that must be solved is credit. Therefore, the core issue of value transfer is transnational credit consensus.
In such a complicated global system, it is difficult to establish a global credit consensus system out of thin air. Due to the different political, economic and cultural conditions of each country, it is difficult for two countries to It is almost impossible for enterprises and governments to completely trust each other. This means that whether it is endorsed by the credit of individuals or corporate governments, even if the value exchange between countries can be completed, there will be huge time and economic costs. But in the long history of mankind, no matter how different the religion, politics and culture of each country are, the only thing that can reach consensus is mathematics (basic science). Therefore, it is no exaggeration to say that mathematics (algorithms) is the greatest common denominator of global civilization and the basis for the greatest consensus among human beings around the world. If we use mathematical algorithms (programs) as endorsement, all rules are based on an open and transparent mathematical algorithm (program), which can allow all people with different political and cultural backgrounds to gain consensus.
[Future Development]
The Internet will make global interactions closer and closer, accompanied by a huge trust gap. Currently, the existing mainstream database technology architecture is private and centralized. On this architecture, the problems of value transfer and mutual trust can never be solved. Therefore, blockchain technology may become the next generation database architecture. Through decentralized technology, it will be possible to complete the huge progress of mathematical (algorithm) endorsement and global mutual trust on the basis of big data.
As a specific distributed access data technology, blockchain technology uses multiple nodes participating in calculations in the network to jointly participate in the calculation and recording of data, and mutually verify the validity of their information. (anti-counterfeiting). From this point of view, blockchain technology is also a specific database technology. The Internet has just entered the era of big data, but from the current point of view, big data is still in a very basic stage. But when it enters the blockchain database stage, it will enter the big data era of real strong trust endorsement. All data here has acquired indestructible quality, and no one has the ability or need to question it.
Perhaps we are now at a major turning point - the early stages of a major transition that is almost as profound as the changes brought about by the Industrial Revolution. Not only are new technologies exponential, digital and combined, progress and changes, but more surprises may be ahead of us. In the next 24 months, the planet will grow more computing power and record more data than it has in all of history combined. In the past 24 months, this value increase may have exceeded 1,000 times. This digital data information is growing faster than Moore's Law. Blockchain technology will not only be used in the field of financial payments, but will expand to all current application areas, such as decentralized Weibo, WeChat, search, renting, and even taxi-hailing software may appear. Because blockchain will allow humans to collaborate on a large scale in a trustless manner without geographical restrictions.
Blockchain is a technology based on which many applications have been produced, including all industry businesses related to data and information. Bitcoin is one of the most well-known applications. The popular explanation of blockchain is that if you buy a lipstick online, you first find the product you like and place an order with the seller. You first give the money to the intermediary platform. After the seller ships the goods and the buyer confirms receipt, the intermediary platform then transfers the money. Transfer it to the seller, because of the trust issue, both buyers and sellers rely on the intermediate platform, and the blockchain, as a decentralized distributed ledger database, focuses on removing this intermediate platform while solving the trust issue at the same time. In the blockchain, everyone has their own ledger to record everything that happens. If a seller takes money but does not deliver the goods during the transaction, this record will exist permanently and cannot be modified, and there is no need to interact with each other. To exchange information, the blockchain world will choose to record the fastest quality at the same time node.The best person's ledger is copied, sent and concatenated, and finally the stack becomes thicker and thicker to form a block.
When everyone talks about virtual currencies, they often cannot do without the concept of blockchain. So what is the magic of blockchain?
Blockchain is an underlying technology, essentially a decentralized distributed ledger database. It sounds very high-end and out of reach, but it is actually very easy to understand.
For example, if you want to buy something on Taobao, the first thing you usually have to do is to open Taobao, find the product you want, place an order and pay the money to Taobao, which is the transaction intermediary. Taobao will pay the seller after receiving the goods and confirming receipt. This was originally just a transaction between me and the seller, but it has an additional "center", namely Taobao.
During the transaction process, this "center" has unlimited power and can even modify the bill at will. Therefore, the “center” often needs a strong backend to endorse it.
So, a man named Satoshi Nakamoto wanted to get rid of this center with infinite power. He wanted to create a decentralized system in which everyone is the center and everyone is the center. Have the authority to keep accounts. So, he created Bitcoin.
In the Bitcoin system, everyone has a small ledger to record every transaction that occurs. A transaction is only valid after being confirmed by a majority of people. If the seller doesn't deliver the goods, everyone's little ledger will record it, leaving him nowhere to escape.
At this time, you may have questions. Since it is just a public ledger, why is it called a blockchain? This involves the issue of consensus. The blockchain system is a system composed of many "centers". The entire blockchain belongs to all individuals participating in accounting. At this time, new problems arise. A system must be in order to survive in the long term. If the bookkeeper can act recklessly regardless of the cost, it may happen that he originally just bought a mobile phone, but received a Tesla instead.
So, Satoshi Nakamoto invented a consensus method called PoW. This method increases the cost of bookkeeping for bookkeepers and prevents them from doing evil easily. PoW uses cryptography to require bookkeepers to compete for computing power to obtain accounting rights. The first bookkeeper to calculate the result can obtain the accounting rights of a block packaged from several transactions. At the same time, you will receive certain tokens as rewards. This is what we commonly call "mining".
Now that the bookkeeper has recorded a block containing several transactions, the system needs to be organized and sorted, and it is impossible to have countless blocks distributed in the system in an orderly manner. So it is necessary to link all blocks end to end in chronological order. At this time, the blockchain was born. BlockchainThe core is technology.
㈦ "Riemann Hypothesis" has been confirmed, which nerve has touched the blockchain people?
If you want to search for the most popular words in 2018, "blockchain" must be Will be on the list. Thanks to the famous Bitcoin, blockchain technology and related industries have suddenly become a new investment trend. Internet giants such as BAT have successively released white papers on their respective blockchain industry layouts. JPMorgan Chase, Goldman Sachs Group, Nas Financial giants such as Dak have also expressed their enthusiasm for blockchain technology. Various blockchain projects are coming one after another, which is almost dizzying.
However, a few days ago, a report that the "Riemann Hypothesis" was confirmed broke out in the media. The famous British mathematician Michael Atiya claimed to have used a "simple" and "new" The method proved the Riemann Hypothesis, and he presented his relevant proof at the 2018 Heidelberg Laureates Forum. In his lecture, this wise jazz gentleman gave a general direction for proving the "Riemann Hypothesis". It is expected that in the next few weeks or even months, many mathematicians around the world will work hard to prove in this direction to confirm Is Atiya's plan feasible? As soon as the news came out, it caused an uproar in the blockchain field. Some people in the industry even pointed out: "Once the Riemann Hypothesis is confirmed, it will affect the life and death of the blockchain."
One is one of the "seven major mathematical problems in the world" that has stumped the world for 159 years. One is a new investment trend based on technologies such as distributed data storage. If you want to know how the former controls the fate of the latter, it is necessary to first take a look at this "Li" that has caused generations of mathematical geniuses to rack their brains but dream about it. Mann guessed what it was.
The prototype of the protagonist in the Hollywood classic film "A Beautiful Mind" and Nobel Prize winner in economics John Nash had studied the Riemann Hypothesis in the mid-to-late 1950s, but not long after that Unfortunately, he suffers from schizophrenia. Many people believe that the painful process of studying the Riemann Hypothesis was the main cause of Nash's illness, and it was not mainly caused by the huge psychological pressure caused by participating in military work as is generally believed. This shows the breathtaking magic of the "Riemann Hypothesis".
The written explanation of the "Riemann Hypothesis" is difficult to understand. In fact, in layman's terms, Riemann believed that the distribution of prime numbers is not chaotic and traceless, but that the secret of its distribution is completely hidden. Within a special function - in particular, the series of special points that make that function take on the value of zero has a decisive influence on the detailed laws of the distribution of prime numbers. If this conjecture is confirmed, some encryption algorithms based on this will inevitably become useless.
So will blockchain technology really be ruthlessly slaughtered because of this?
More and more people already know that blockchain is a new application model that integrates distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. Its performance is compared toThe underlying technology of Bitcoin is a series of data blocks generated using cryptographic methods. Each data block contains information about a Bitcoin network transaction, which is used to verify the validity of the information and generate the next block. Not only Bitcoin, but the Tokens issued by current blockchain projects are also based on this principle. Bitcoin and blockchain tokens are called cryptocurrencies, and their security and encryption are reflected in this.
One is based on encryption algorithms, and the other reveals encryption rules. From this point of view, blockchain technology will indeed be destroyed by the "Riemann Hypothesis" - in fact, this is not the case!
The encryption algorithm of blockchain technology is an asymmetric algorithm and a hash algorithm based on the discrete logarithm problem on the elliptic curve function. It has nothing to do with the prime number distribution function assumed by the "Riemann Hypothesis". For example, fuel vehicles and electric vehicles use two different power sources. The so-called statement that "the Riemann Hypothesis is confirmed will affect the life and death of the blockchain" is nothing more than an error caused by the fragile nerves of blockchain people.
However, it can also be seen from this that the emerging industry of blockchain is extremely fragile. A slight external disturbance can cause panic and uneasiness in the industry, and even the turmoil can cause panic and panic. Several cryptocurrency theft incidents in history have caused large-scale market declines. In fact, the theft incidents are not due to security vulnerabilities in the blockchain technology itself, but due to the systems and trading platforms of some project parties. Caused by system security vulnerabilities. Until breakthroughs are made in quantum technology, Bitcoin will remain one of the most difficult technologies on the planet to hack. However, due to the steady pressure from the regulatory level and the lack of clarity and deliberate confusion in the media circle, and the fact that some blockchain projects are indeed confusing and have frequent loopholes, the general public is waiting and watching when facing blockchain technology and applications. It is not difficult to understand the questioning attitude and the fragile nerve that can be touched at any time.
It is conceivable that before blockchain technology can complete decentralization and achieve point-to-point trust, there will be a long way to go in how to make people trust the blockchain technology itself.
㈧ Why is it said that recruiting people for blockchain positions is all based on deception
However, where are the opportunities for these innocent employees? To put it bluntly, some blockchain entrepreneurs only want to be "empty-handed" and exploit them layer by layer through "fooling". The use of asymmetric industry information has caused projects such as blockchain and digital currency to be over-packaged, giving people a feeling of "hope". The inherent "bad roots" of these blockchain entrepreneurs have, to a certain extent, led to the "sick" development trend of the industry.
Some blockchain entrepreneurs clamor to embrace the times, embrace changes, and embrace the future, emphasizing the charm of decentralized “fairness”. But in reality, it hurts the interests of job seekers and other related groups for their own selfish interests. This in itself is a great injustice.fair.
The asymmetry of information does not last forever. Blockchain, digital currency, etc. are all areas worthy of attention, but they cannot always be regarded as unlimited squandering capital by some entrepreneurs. For job seekers who want to join, they still need to keep their eyes open, otherwise they may be "surprised" if they are not careful.
㈨ Several of my friends are playing with blockchain. Is it reliable?
Blockchain is also a relatively new thing, and many people are interested in it. For those who pay attention to blockchain, blockchain can be loved by many people, and it can also gain investment from many people. Many people particularly want to invest in blockchain, and they also hope to gain more by investing in blockchain. More rewards.
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.
