区块链不能改变世界吗,区块链不能改变世界的原因

① The Queen of England is interested in blockchain and how it will change the world

Live and learn, use this sentence to describe the 94-year-old super The long-awaited Queen Elizabeth II is a perfect fit. Although Queen Elizabeth II is old and frail, she is still paying attention to the most cutting-edge social changes and advanced technological innovation projects, such as blockchain technology that is about to subvert the world. Many people think that blockchain is a scam, but in fact it is not. Many people think that blockchain is a scam based on their understanding of Bitcoin. Bitcoin is actually the most primitive and elementary application of blockchain.

Ethereum is the best embodiment of 2.0 regional chain technology. The key word of this technology is contract. The biggest feature of Ethereum is the achievement of smart contracts. This term was proposed by Nick Szabo in 1995. It uses numbers to define a series of commitments. Once the two parties reach a contract on the regional chain, the contract can be made without third-party certification. It takes effect, breaking the limitations of currency payment in the 1.0 era and greatly increasing the types of transactions. The 3.0 era is an era of comprehensive application of blockchain technology, extending the original simple economic and financial fields to government, society, medicine, agriculture, culture and other fields. The evolution process of regionalized technology applications can be summarized from regionally centralized applications to decentralized autonomous companies and decentralized organizations, and then to regionally centralized autonomous societies.

② It can increase the price of graphics cards and there is a global electricity shortage. What exactly is blockchain and why it can change the world?

It is very likely that the word blockchain technology that everyone is paying attention to, most of them Since Bitcoin skyrocketed to 100,000 yuan in 2017, and the share price of Xunlei Resources has increased fourfold due to the creation of Wanke Cloud with blockchain technology, it can be seen that as long as other tools and companies get involved, The term blockchain technology has become an instant hit without exception. The term digital currency is gradually gaining popularity among the people, and as it happens, there are usually "coin mining" and "digital currency".

Blockchain technology is different. You can buy and sell directly with sellers. As long as everyone follows the principle of paying once and delivering goods, there will be no problem. In this way, the middleman is eliminated, the stock trading time is greatly shortened, and the entire process is efficient and practical. There will even be no payment failure in the Alipay wallet in the early morning of Double Eleven, and the transaction information of the two parties can only be known to each other. The sensitive transaction information between each other will not be known to third parties, thus ensuring the protection of personal information.

③ Why blockchain will redefine the world

The technology behind Bitcoin has established a reliable ledger, thereby changing the lives of many people, and its significance goes far beyond Cryptocurrency category.
1. When the Honduran police burst into Mariana Catalina Izaguirre’s home one day in 2009 and wanted to evict her, she had lived in this dilapidated house for more than thirty years. Unlike her neighbors, Mariana Catalina Izaguirre even had a housing certificate from the government, but unfortunately, information from the local government housing authority showed that the housing authority and another person, the "homeowner", applied for an eviction order from the court, and Ms. Lzaguirre was eventually forced to leave.
This type of nonsense is common around the world due to unclear registration or lost records. The lack of security of home ownership is also a source of injustice. It also makes it difficult to use homes or land as collateral for financing, etc.
Bitcoin can make such problems disappear. Bitcoin is a "smart" currency based on encryption algorithms. What we should pay more attention to is the technology behind Bitcoin: blockchain. It means much more than money or cash. It creates a way of accounting that resolves mutual distrust.
That’s why politicians are consulting Factom, an American startup that provides a prototype for blockchain-based land registration, to clean up the Honduran property agency. There is also interest in Greece, which does not have a proper land registration policy and only 7% of its land is correctly mapped.
2. Other applications of blockchain and similar "distributed ledgers" can be extended to prevent diamond theft and supermarket assembly lines. The NASDAQ exchange will soon use a blockchain system to record private company transactions. The Bank of England does not like technological civilization, but it seems to be stimulated: it wrote in a research report last year that distributed ledgers are a great innovation and will have a profound impact on the financial industry.
Politicians are thinking further: As partners and the left gathered at this year's OuiShare Fest in Paris to discuss how grassroots companies are shaking up big data companies like Facebook, blockchain was in every speech. . In the liberal dream of a world where more government regulations are replaced by private contracts between individuals—encrypted algorithms reinforce themselves.
Blockchain was envisioned by Satoshi Nakamoto, the remarkable and so far only identified founder of Bitcoin—“a fully peer-to-peer electronic currency,” he wrote in an article published in 2008. In order for it to behave like a currency, Bitcoin must be transferred from the account being claimed and can be spent twice by the same person. In order to realize Nakamoto's dream of a decentralized system, Bitcoin must avoid any dependence on third parties, such as banks hidden behind ordinary payment systems.
The blockchain can replace third parties. It can hold the transaction history of every Bitcoin, providing evidence of any person at any time. The distribution system can be replicated on thousands of computers—Bitcoin’s “nodes”—everywhere in the world, and made public. But even with such openness, it is still credible and safe. The complexity of the mathematical algorithms and the computational brute force built into its “consensus mechanism”—the process by which nodes agree to upgrade the blockchain based on the circulation of Bitcoins—guaranteed this.point.
For example, Alice wants to pay Bob for rental services. They all have Bitcoin wallets – software that leads directly to the blockchain, rather than a browser leading to a web page without identifying the user within the system. Transactions begin when Alice's wallet starts making requests, and the blockchain starts changing to show that Alice's wallet has less and Bob's has more.

The network needs to go through several stages in this process to complete the change. As the request passes through multiple nodes in the network, the ledger is checked to see if Alice has the Bitcoin she wants to spend. If everything looks okay, specific nodes instruct miners to bundle Alice's request with other similar reputable transactions, creating a new module in the blockchain.
This involves breaking the module into a series of data of a specified length by giving the encryption a hash function (see diagram). Like many encryptions, this hashing is a one-way street. Data can be dispersed, but conversely it is impossible to aggregate the dispersed data into data. But even though the hash does not contain the data, it is still unique. By changing the entry module either way - by simply changing the transaction by a single number - the hashes will be different.
3. Along with other data, the hash will be placed at the beginning (header) of the specified module. The first bit then becomes the basis of a real mathematical puzzle, again involving hash functions. Puzzles can only be solved by trial and error. Through the Internet, miners have to experiment with hundreds of millions of possibilities to find answers. When a miner finally figures out the answer, other nodes quickly check it out (again via a one-way street: solving is hard, checking is easy), and each node confirms the solution and updates it to the blockchain. The first hash becomes the confirmation line for the new module, which is now part of the ledger. Alice pays Bob, and all other transactions contained in the module are confirmed.
The decryption phase introduces three things that greatly enhance the security of Bitcoin. One is chance. You can't predict which miner will solve the puzzle, and therefore who will upgrade the blockchain at a given time, except that it will be the most diligent miner and not some random saboteur. This makes cheating difficult.
The second point is history. Each new first bit contains the hash function of the previous module's first bit, which contains the hash function of the previous module, and so on until the starting point. This connection makes the module a circular chain. Starting with all the data in the ledger, regenerating the top of the latest module is a trivial matter. Although making a change anywhere - even going back to one of the earliest modules - the changed module's position will look different. This means the same goes for the next module, and all subsequent modules. The ledger will not pass the latest module identifier and will be rejected.
Is there any solution? Imagine Alice changes her mind about paying Bob and tries to rewrite history,The bitcoins will still be in her wallet. If she is a competent miner, she can solve the burning puzzle and produce a new version of the blockchain. But in the time it takes her to do so, the rest of the network will have extended the original blockchain. Nodes will always work on the longest version of the blockchain. This rule prevents the situation where two miners find a solution at the same time and leads to consequences worse than a temporary fork in the chain. It will also deter cheating. In order for the system to accept her new version, Alice needs to extend it faster than others. Not being able to control more than half of the computers - known in technical terms as a "51% attack" - should be impossible.
4. Not to mention the possibility of subverting the above-mentioned network, another deep-seated question is: Why should we become a member of this network? This answer is the third "decryption" step, and there is a reward. Each new block has new Bitcoins. The person who solves the puzzle will be rewarded with 25 Bitcoins, which is about $7,500.
All the above-mentioned ingenious designs are not what makes Bitcoin truly attractive. Its value lies in instability and unpredictability, as shown in the figure below, but the total amount of Bitcoin is certain. The mechanics of blockchain also work well. According to a website called blockchain.info, on average, more than 120,000 transaction records are added to the blockchain every day, which means approximately $75 million in transactions. There are currently 380,000 blocks, and the size of this ledger is nearly 45GB.

Most of the data located in the blockchain is Bitcoin, but this is not required. Mr Nakamoto also creates a distributed system and writes about it. Tech geeks call it: an open platform. This platform is modeled after the Internet, including operating systems such as Android or Windows. Developers can develop applications based on basic functions on the blockchain without getting anyone's permission. Chris Dixon of Andreessen Horowitz, which invests in several Bitcoin startups, said: This kind of network will eventually become a public database. It is understood that Andreessen Horowitz has invested in the Bitcoin wallet company Coinbase and the Bitcoin hardware device company for the public 21.
There are currently three major areas of blockchain-based applications. The first is to complete all suggestions through the blockchain. The startup Colu is betting on this model. They have developed an algorithm to "polished" some small Bitcoin transactions, so that these transactions can represent transactions such as securities and precious metals.
Protecting the validity of land or house signatures has become a typical application of the second category. Bitcoin transactions add signatures to the blockchain ledger. A startup called Everledger protects luxury goods in this way, such as they do in blockchain dataRecording the texture attributes of a gemstone can provide the most visual proof if the gemstone is lost. Onename uses a similar method to store personal information; note that since this application is not a pure Bitcoin transaction, you need to give more trust first, for example, you need to tell the application developer some accurate information about yourself.
The third application has greater ambitions. "Smart contracts" can automatically detect whether various environments are valid. This is because Bitcoin can be programmed to be usable or unusable in specific situations.
Lighthouse, founded by Mike Hearn, a well-known Bitcoin engineer, is a decentralized crowdsourcing project. If enough money comes into the project, then everything starts, if the goal is not achieved, it stops. Heran believes that his project can be cheaper and more independent than its competitors based on the Bitcoin protocol.
5. According to New York venture capital firm Albert Wenger of USV, the emergence of distributed ledgers has opened up an almost new quadrant of possibilities. The company has invested in a number of decentralized companies, such as providing OpenBazaar for P2P trading. In addition to the cheers for blockchain, some people also question its security and scalability. Blockchain works well for Bitcoin, but for some niche applications it is not yet able to support millions of users.
Although Nakamoto’s design of the blockchain has proven to be indestructible so far, academic research also believes that without controlling 51% of the entire blockchain, it is almost impossible to do bad things on the blockchain. possible. In the past, Bitcoin players were limited to a small circle. Today, Bitcoin mining is controlled by various large Bitcoin pools. In this "pool", small miners share their efforts and receive rewards.
Another concern is the environment. In order to obtain more Bitcoins, miners have high requirements for computing power, which means that the power consumption of computers must continue to increase. According to data from blockchain.info, miners have to perform 450,000 calculation attempts per second, which will cause huge energy consumption.
Because miners are tight-lipped about the hardware, it is difficult for the outside world to know the specific power consumption of these computers. A rough calculation shows that if everyone uses the most efficient hardware, power consumption per bit is 2 megawatts, which is about the electricity consumption of California's 15,000 residents a year.
But these squanderings surrounding Bitcoin have their limits. Nakamoto’s design for Bitcoin at the time was as follows: there were approximately 1,400 transactions per megabyte of data, which meant 7 transactions per second. Compared with the current 1,736 Visa card transactions per second in the United States, Bitcoin blocks can be larger, but larger blocks will take longer to generate, which will also increase certain risks.
Some previous experience may allowfor reference. When the web browser was invented in the 1990s and millions of people started living online, many prophets predicted that the Internet would stagnate. But in fact, the Internet has been developing, and by the same token, the development of Bitcoin will not stagnate. More computing equipment that can be used for mining will be more energy-efficient, developers will be more enthusiastic about developing applications on Bitcoin-based platforms and using Bitcoin transactions, and faster network connections will also accelerate the expansion of Bitcoin blocks. speed.
Many problems about Bitcoin are not due to a lack of solutions. Any changes to the Bitcoin mechanism require permission from the Bitcoin community, and reaching an opinion is not easy. One party advocates expanding the size of the Bitcoin block as quickly as possible so that it can become a disruptor of traditional payments, but the other party believes that if adjustments are not made, the existing system may collapse next year.
6. Mr. Hearn and Gavin Andresen are two Bitcoin tycoons and the leaders of large Bitcoin transactions. They called on mining companies to install new versions of Bitcoin that support larger transaction sizes. Some miners have indeed been subject to cyberattacks, and the upgrade and system are being pushed to their limits by a sea of ​​tiny transactions, with widespread evidence of their need and danger.
This all lays the foundation for the creation of an alternative to the Bitcoin blockchain that can be optimized for storing distributed ledgers rather than running cryptographically. Multichain, a customized blockchain platform provided by Coin Science, demonstrates the possible direction. It also provides the resources needed to build a blockchain like Bitcoin and can be used to create private chains, open only to specific users. If all users come to trust the needs of miners and proof of work is reduced or eliminated, then existing connections to the ledger become redundant.
The first business to adopt such a descendant of blockchain may be exactly one of the companies that failed in the first place and inspired Nakamoto: finance. In recent months, enthusiasm has grown for private blockchains to prevent disruptions in bank financing. More ironic than ironic, one reason is that anti-government liberals have developed technology that would allow banks to better comply with government demands by knowing their customers and anti-money laundering rules. But there's a deeper attraction here.
Industrial historians point out that new energy sources existed long before the most efficient processing methods were developed. When electric motors were first developed, they were like the giant steam engine machines that had come before them. It took manufacturers decades to see that decentralized electric motors could reorganize every aspect of what they did. The Bank of England writes in its digital currency report that it sees something similar moving forward in the financial industry. That's thanks to cheap computational finance companies that have digitized their internal work, but they haven't changed their organizations enough to match. The payment system is still centralized: currency transfers go through the central bank. When financial companies do business with each other, synchronize internalBookkeeping was a tedious task that took days, tying up capital and creating risks.
Distributed ledgers, which allow transactions to be completed in minutes or even seconds, could go a long way toward solving these problems and realizing the promise of digital banking. The books can also help banks save a lot of money: Santander says they could reduce the industry's bookkeeping by up to $20 billion a year by 2022. Vendors still need to prove they can handle the exorbitant Bitcoin transaction prices; but big banks have begun pushing to standardize the nascent technology. Among them, UBS United Bank has proposed the establishment of a standard "settlement currency". The first priority of R3 CEV is the launch of the blockchain. The Swiss Investment Bank has jointly invested with Goldman Sachs, JPMorgan Chase and 22 other banks to develop a standardized architecture for private accounts.
7. Banks are not the only problem. Many companies and public institutions struggle to maintain them, along with often incompatible databases and high costs of communicating with each other. This is the problem Ethereum wants to solve, arguably the most ambitious distributed ledger project yet. The creation of 21-year-old Canadian programming genius Vitalik Buterin, Ethereum’s distributed ledger can handle more data than Bitcoin. It has a programming language that allows users to write more complex smart contracts that automatically pay and print invoices when goods arrive, or automatically send dividends to owners if profits reach a certain level. Mr. Buterin hopes that such a smart "decentralized autonomous organization" will be formed - basically, the virtual enterprise just sets some operating rules for the "Ethereum blockchain".
One area where such ideas could have a radical impact is in the "Internet of Things" - billions of previously silenced everyday items like refrigerators, door latches and lawn sprinklers. A recent IBM report titled "Device Democracy" concluded that it would be impossible and unwise to centrally track and manage these billions of dollars of devices; such an attempt would leave them vulnerable to hackers and Government supervision. Distributed registers seem like a good choice.
The programmability provided by Ethereum goes beyond just allowing people’s property to be tracked and registered. It has some new uses. Under various method rules, car keys embedded in the Ethereum blockchain can be sold or rented, creating a new P2P for renting or sharing cars. Going further, some people talk about applying this technology to make self-driving cars a public resource for society. According to preset program rules, such vehicles can themselves store some digital money to pay for their rental fuel, maintenance and parking spaces.
8. Unsurprisingly, some people think these plans are too radical. Ethereum1 ("Genesis") was only developed in August and is currently only a small startup ecosystem cluster. Although Mr. Buterin admitted in a recent blog that this was a bitMoney is scarce, but the specific details of blockchain's eventual prosperity are far less real than the enthusiasm for widespread distributed ledgers that is leading startups and existing large enterprises alike to examine their respective potential. Although society always ridicules the abilities of accountants, accounts do matter.
Today’s world relies heavily on double-entry bookkeeping. Its standardized system of recording debits and credits is a must for understanding a company's core financial position. In the early 20th century, the German sociologist Werner Sombart claimed that whether modern capitalism absolutely requires such bookkeeping in order to develop deserves more in-depth discussion. Although the double-entry accounting system began with Italian merchants during the Renaissance, it happened to be a coincidence of timing; at that time, double-entry accounting spread more slowly around the world than capitalism did, and did not become widely used until the late 19th century. But there is no doubt that the fundamental importance of technology is not just to record what a company does, but to define its future.
Accounts, which no longer need to be maintained by companies or governments, can serve as a timely stimulus to new companies and governments about changes in the way work is done, expectations for the future, and what can be done now. Systems without centralized records can be just as trustworthy as they can bring about radical change.
These ideas, while still a novelty, are only applicable in a few areas, and their ability to spread and the possibility of being expanded are limited. They also face some unknown resistance. Some critics of Bitcoin have long viewed it as the latest attempt at "California ideology." (California ideology refers to the sense of mission to save the world through technology). This is just a coded trust mechanism, not democracy, legitimacy and accountability, and it is difficult to attract or empower people.
At the same time, the entire world will be recorded digitally, which will also have many benefits. If blockchain has a fundamental contradiction, it is this: even if it provides the same past and present, the future of blockchain will be very different.
This article is selected from "The Economist", compiled and produced by the Heart of the Machine, participating members: Huang Zhizhen, Chen, Zhao Saipo
Digital cryptocurrencies such as Ritaicoin, Litecoin, and Dogecoin are also used Blockchain technology.

④ Blockchain will change the world in ten years. LinkToken will take you to see it

The blockchain era is coming | What new applications will there be in the new year?

If recent research is to be believed, we are likely to see real-world applications of blockchain technology within the next two years.

Recently, HackerRank, a well-known technology recruitment company, released the "2019 Developer Skills Report". Among the 71,281 developers who participated, more than 23% said that the actual application of this technology in the next 24 months will still be Very possible.

About 27.54% of people think this is more realistic, 21.89% are not sure, 19.77% think the technology has been exaggerated, and only 7.01% think it is unrealistic.

Internet of Things

However, don’t be too busy to be happy. To pour cold water on it, the report predicts that compared to blockchain, the Internet of Things (IoT) will be the most popular technology in the next few years. Welcome to technology.

Developers believe that unlike blockchain, which is still in its infancy, IoT adoption is driven by increasing connectivity between homes, cars and cities.

How to achieve it

Blockchain technology is increasingly being tried and tested by mainstream institutions in many industries, but the technology does not seem to be available yet Stand firm.

Banks appear to be particularly interested in blockchain because private decentralized ledgers may bring greater efficiency and lower costs, especially in stock trading and clearing.

This technology also has great potential in related fields such as health care, where it can be used to combat the trafficking of counterfeit drugs.

Traditional energy companies are also actively exploring. In fact, Spanish multinational electrical company Iberdrola recently completed a blockchain trial aimed at tracking renewable energy more efficiently.

If these experiments and tests don’t translate into real-world applications, we may see an increase in the number of developers who think blockchain is overhyped if we take another look at it this time next year. .

⑤ Blockchain is coming, how will it change the world?

Traditional centralized institutions occupy most of social resources. They are collectors and monopolists of market information and use This is for profit. Blockchain will make all this a thing of the past, and the future will be an era of information sharing.
The book "Blockchain: A New Economic Blueprint and Introduction" (New Star Publishing House, January 2016 edition) written by Melanie Swann, founder of the Blockchain Science Institute, points out that the role of blockchain in Trust plays the same role as the Internet plays in information. Like the early Internet, blockchain has the potential to revolutionize everything. Blockchain is the source of power for the fourth generation industrial revolution. Melanie also constructively proposed that blockchain can be used to automatically track all digital behaviors and create a decentralized digital information library to verify identities, thereby achieving lower cost and more efficient provision of information traditionally provided by the national level. Possibility of service.
At present, international giants such as Microsoft, Tencent, Wanda, Goldman Sachs, JPMorgan Chase, and Dell are already testing blockchain projects, and small and micro enterprises such as European Crowdfunding have become the first to try it.

⑥ What happened to the blockchain recently?

There is a word recently.

It often appears on the Internet,

It’s amazing to see this word,

but I often don’t know what it means.

The word is called

"Blockchain"

Recently, "Blockchain" has been named publicly again.

What is "blockchain"?

From an academic perspective, blockchain is a new application of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanisms, and encryption algorithms.Use patterns.

Blockchain is essentially a decentralized database.

Explain this.

Many people still don’t understand.

Hypothetical environment:

Methods to solve the blockchain problem:

If you use the whole family to keep accounts, the above problems will not exist, because you keep the accounts, your father keeps the accounts, and your mother keeps the accounts. They can all see the ledger, you can’t change it, and neither can your parents. So you can't help the dad who wants to buy cigarettes, nor can you help the greedy dad.

In other words, the blockchain

this distributed digital ledger

records everything that has happened

and the transactions are unanimously approved by the system.

Each block is a ledger.

It can not only record transaction information

but also has more functions.

Multi-functional "Blockchain"

Each block is like a hard drive, with all the information on it saved and then encrypted using cryptography. This saved information cannot be tampered with.

Looks like it

Blockchain has some super technical properties.

Characteristics of blockchain

1. Exceptionally safe: Unlike centralized databases owned by companies or government agencies, blockchain is not controlled by any person or entity, and the data is completely replicated (distributed) across multiple computers superior. Unlike centralized databases, there is no single entry point for attackers, so data is more secure.

2. Non-tamperability: Once entered into the blockchain, no information can be changed, and even administrators cannot modify this information. Once something happens, it cannot be changed. This property is of great significance to the ever-changing and ever-changing online world in which humans live.

3. Accessibility: All nodes in the network can easily access information.

4. No third party: Because of the decentralization of the blockchain, it can facilitate peer-to-peer transactions. Therefore, whether it is a transaction or fund exchange, no third party approval is required. Blockchain itself is a platform.

What will the future development and usage scenarios of blockchain look like?

Watch more news.

More News

1. Digital Identity

Many people will encounter the dilemma of "proving that my mother is my mother" when applying for various certificates. With blockchain, there is no need to worry anymore.

Our original birth certificates, real estate certificates, marriage certificates, etc. It needs a central node for everyone to recognize. Once cross-border, contracts and certificates may become invalid due to the lack of a global central node.

The immutable nature of blockchain technology fundamentally changes this situation. Our birth certificates, real estate certificates, and marriage certificates can all be notarized on the blockchain and become things trusted by the whole world. Of course, it is also easy to prove "my mother is my mother".

2. Health care

To put it simply, it is to use the blockchain to establish a universal record library with timestamps, so as to achieve the purpose of extracting data information from different databases. For example, when you go to see a doctor, you can have repeated examinations without changing hospitals, and you don’t have to go back and forth for medical insurance reimbursement, which can save time and money.

3. Travel consumption

For example, we often use Ctrip, Meituan, etc.PP searches for and places orders for hotels and other services, from which each platform earns commissions. The use of blockchain is to remove middlemen and create a secure, decentralized way for service providers and customers to achieve direct connection and transactions.

4. More convenient transactions

Blockchain can make payments and transactions more efficient and convenient. The blockchain platform allows users to create smart contracts that become active when specific conditions are met, meaning that automatic payments can be released when both parties agree that their conditions are met.

5. Strictly control product quality.

If you buy an apple, with blockchain technology, you can know the entire process from production to distribution. There are government regulatory information, professional testing data, corporate quality inspection data, etc. Smart supply chains will make our daily food and commodities safer and give us more peace of mind.

6. Property rights protection

Related questions and answers: What does blockchain mean?

Blockchain is a new usage model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms. Blockchain is an important concept of Bitcoin.

It is essentially a decentralized database, and as the underlying technology of Bitcoin, it is a series of data blocks generated using cryptographic methods. Each data block contains a batch of Bitcoin network transactions. The information is used to verify the validity of its information (anti-counterfeiting) and generate the next block.

Blockchain is closely related to people's production and life in the fields of public management, energy, hotel management, transportation, etc. However, the centralized nature of these fields also brings some problems, which can be transformed with blockchain.

The decentralized fully distributed DNS service can realize domain name query and resolution through point-to-point data transmission services between each other in the network, and can be used for certain important infrastructure operating systems and firmware without being tampered with. It is possible to monitor the status and initialization of software, detect bad tampering, and ensure that data transmitted by systems using IoT technology has not been tampered with.

The above content refers to the network-blockchain

⑦ Why the blockchain can be tamper-proof

The blockchain is linked together in an orderly manner from scratch. Each block points to the previous block, which is called the child block of the previous block, and the previous block is called the parent block.

Each block has a block header, which contains the hash value generated by the algorithm of the parent block header. The parent block can be found through this hash value. When there are any changes to the parent block, the hash value of the parent block also changes. This will force the sub-block hash value field to change, and so on, subsequent sub-sub-blocks, sub-sub-sub blocks will be affected. Once a block has many descendants, it is necessary to recalculate the blocks of all descendants of this block. However, such recalculation requires a huge amount of calculation, so the longer the blockchain, the harder it is to change the block history.

⑧ The future of blockchain will be the same as the journey of the Internet, and it can truly change the world

Once upon a timeIn people's eyes, cryptocurrency is just a money game that does not produce any value. Some people even hail Bitcoin as the world's largest tulip scam. For example, Chen Sijin is well known to everyone.

More radical people compare Bitcoin to being disgusting and contrary to human civilization. This is Munger’s exact words.

But with the implementation of cryptocurrency applications, facts have spoken louder than words.

For example, we can see the reality: NFT combined with traditional works of art can be auctioned for a sky-high price of 69 million US dollars; DEFI has created a decentralized financial market of more than one trillion; NFT game Axie Infinity The total revenue in a single day has exceeded 40 million US dollars, which is three times more than Honor of Kings. I don’t believe that traditional games are not salivating. There is also web3.0 which is very worth looking forward to.

Every step of cryptocurrency from DeFi-NFT-Metaverse-Game to now web3.0 has impressed traditional capital. So we're seeing some very exciting changes.

I saw a report that after Alibaba, Tencent has also launched NFT, and will sell 300 digital collectible NFTs in the first phase.

Although facing policy restrictions, it may not be possible to trade, but it brings positive signals to the market. Blockchain technology is not air!

Do you still believe this is a complete scam?

Some people say: Using blockchain technology to revolutionize the Internet may be the theme of this bull market.

Decentralization allows the profits of Internet applications to be equally distributed and shared prosperity. I personally believe this with a high probability.

I believe that implementation and application are the ultimate goals of blockchain development. The development of technology can allow the cryptocurrency trading market to get out of the traditional bull-bear cycle, allowing this market to truly bid farewell to the fate of harvesting leeks.

Because the mentality of currency speculation is abandoned, cryptocurrency can be used as a productive capital investment. I think this is the voice of some people in the currency circle, and it also includes many big guys.

If the mentality and goals of market participants have changed because of the greater application of cryptocurrency, there may be a change in the past history.

It is increasingly felt that the blockchain will follow the same journey as the Internet in the future and can truly change the world.

The market has been rising for several consecutive days. We say that there is no market that only rises but never falls. Now market confidence is slowly recovering. Investors will still worry whenever there is any disturbance.

Jiang Zhuoer clearly stated this in his article "Deep Bears Are Not Supported in the Super Release Era"Even if it is a bear market, it is a short bear market, that is to say, it is not a bear market that lasts for more than a year.

Of course, Jiang Zhuoer’s views come not only from a very detailed analysis of the market, but also from the impact of the general environment and climate, such as the substantial increase in the social acceptance of Bitcoin and the post-COVID-19 era of excessive water release. Investors have decided that there will be no deep bear in 2014/2018, and the remaining script is nothing more than a double-headed bull market in 2013 or a monkey market in 2019. To be honest, although Jiang Zhuoer had no choice but to become an emotional blogger on Weibo, I personally admire his long-term value investment views on cryptocurrency. And most people also report that its success rate in predicting the market is extremely high.

From the data on the chain, both whales and retail investors are buying in large quantities.

Market confidence is also recovering, with the greed index returning to above 0.5.

If the bull market restarts in the second half of the year, every adjustment should be an opportunity for us to buy low.

Even if the worst happens, it will still be a short bear as Jiang Zhuoer said, and there is nothing to be afraid of. Maybe I'm a little optimistic.

Let’s take a look at the trends of Bitcoin and Ethereum

The market of Bitcoin continued to fluctuate downward yesterday, with prices under pressure around 41500 and 40400 respectively. Although there were subsequent rebounds out, but the upward momentum is beginning to weaken. It fell below and moved downward again during the day. It is now close to the lower track of the support area mentioned yesterday. The trend has risen to the 40,000 line and is under pressure. The highs are constantly moving downwards. The early gains are giving up. If the lows are refreshed again in the future, the price will retrace within the day. 38,000 first-line risk.

Looking at the four-hour chart, the Bollinger Bands are open, the price is running in the middle and lower rail areas, the trend remains weak and oscillating, the moving averages are in a downward posture, and the short-term range is constantly moving downwards. If the follow-up The low of 38690 has been refreshed, and the price is expected to test further downwards. I hope you will be prepared in advance. The current trend is fluctuating downward, so when the market does not break through and stabilize at 40,000 during the day, it is recommended that short orders are the main idea, and long orders are supplemented. The upper side suppresses and focuses on the vicinity of 40,000. The rebound allows short orders to be entered nearby, with stop loss at 404,500 and take profit at the 39,300-38,900 area. If it falls below the short-term support of 38690, you can consider short positions and take profit at about 400 points. Consider the 38,000 line for long orders during the day, stop loss at 37,700, and take profit at the 38,500-38,700 area.

Let’s take a look at Ethereum:

Affected by the market yesterday, the upward trend was interrupted, and the price came under pressure to the 2700 line. Although it rebounded many times in the future, No breakthrough has been made. The trend rebounded to 3660 during the day and came under pressure, and the bullish sentiment started.It has begun to weaken, and the trend has corrected and entered high consolidation. It is expected that the volatile market will continue for a period of time, and the range will focus on the 2500-2700 area.

Looking at the short-cycle hourly chart, the market is under pressure and has pulled back during the day. The current trend is fluctuating around the mid-track. The long and short sides are relatively stalemate. The short-term trend is relatively stalemate, and there is no sign of breaking, so the market is expected to fluctuate. It will continue, we can operate high and low during the day. The upper side suppresses and focuses on the vicinity of 2665, and allows short orders to enter the market. Stop loss is 2700, and take profit is below 2600. The support below will focus on the vicinity of 2560. If there are long orders nearby, consider entering the market. Take profit above 2620.

#BTC[超话]# #欧易OKEx# #digital currency#

⑨ How will the OLT blockchain change the world and what impact will it have on business?

A major obstacle to the development of blockchain is that this new technology cannot be well integrated into the existing system. OneLedger is committed to solving this problem and serving as a channel for all blockchains. OneLedger is convinced that once enterprises can easily connect to the blockchain, the decentralized market will develop rapidly. In addition, coupled with applications in the retail industry, decentralized technology can certainly unleash huge potential.