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⑴ How to make money with blockchain and what are its economic prospects

I entered the blockchain field last year and became a member of the currency circle. I discovered that blockchain makes money. There are many ways to make money, it all depends on what kind of money you have.

The first and most direct way is to speculate in digital currencies on the exchange. In the early stage of speculating in digital currencies, you can choose some relatively high-value mainstream currencies, such as Bitcoin, Ethereum and the like. Mainstream value currency.

The fifth way is other special ways. This is another special way, including helping some project parties do community operations, and you will get a part of the tokens, or helping the project parties write white papers, and you can also get a certain amount of token rewards.

There are probably several ways to make money in the blockchain. I wish you realize wealth as soon as possible.

WeChat public account: Shenzhen Blockchain Community

⑵ What are the examples of blockchain application development

Government Management
Some countries are interested in decentralization It has expressed great interest in blockchain technology to store public data in a standardized data management framework. For example, Essentia is piloting an e-government system with the Central Union of Agricultural Procers and Forest Owners in Finland. project, this project will apply blockchain technology to enable urban and rural residents across Finland to query various records, fully meet the needs of residents and employers, and increase employment rates. In addition, the use of this technology can also improve the efficiency of government operations, allowing residents to easily query various information such as education, public records, and voting.
Waste Recycling
For example, a smart waste management system in China uses Waltonchain’s RFID technology. Using Waltonchain’s blockchain application, waste levels can be effectively monitored to improve management and operation efficiency and Resource optimization.
Identity Recognition
The Swiss city of Zug, known as the “Crypto Valley”, has developed an identity authentication system using blockchain technology with its partner company Uport. Through this identity authentication system, citizens can easily Good to participate in online voting and proof of residence.
Border Control
EssenTIa has been in contact with the Dutch government, hoping to use its blockchain technology to build a border inspection system for the Dutch government to screen passengers traveling between Amsterdam and London. Currently, Eurostar high-speed rail passengers between the two countries need to undergo border control checks at multiple locations. EssenTIa is working on a blockchain-based solution that will securely store passenger data so that Dutch inspection records can also be reviewed by UK border agencies. Blockchain technology will ensure that data has not been tampered with and is verifiably accurate.
Health and Medical
As we all know, medical records are veryFragmented and error-prone, inconsistent data processing processes often leave hospitals and clinics forced to deal with incorrect or incomplete patient records. MedRec, a blockchain electronic medical record system developed by the Massachusetts Institute of Technology in the United States, uses blockchain technology to promote data sharing. At the same time, it can also provide authentication and confidentiality services.
Enterprise Management
As enterprise customers of Microsoft Azure Apps, they can take advantage of Blockchain as a Service (BaaS), which will enable enterprises to access smart contracts and blockchain applications in a secure hosting environment. According to media reports, Google is also developing a proprietary blockchain project to support its cloud-based business. Google's parent company Alphabet is developing a distributed accounting project that third parties will be able to use to store data related to Google Cloud services.
Medical Data
Medical centers that digitize patient records do not store data across multiple devices. Instead, they typically store data on centralized servers, which is a major target for hackers. Target, as evidenced by the Wannacry attack on NHS hospitals in the UK. But beyond that, even if security risks are ignored, there is still a problem of fragmentation. Currently, there are more than 50 different electronic medical record systems (eHR) in operation in hospitals in different cities around the world, and there are usually dozens of different medical application systems in the same city. These independent systems cannot perform interoperable retrieval, and patient data in various hospitals can only be scattered in different data storage centers.
In patient life-and-death situations, the lack of comparison of reliable medical data and slow operating efficiency will be fatal. EssenTIa's application framework solves all these problems by using a blockchain-based system that will All clinically relevant patient data is stored and instantly accessible regardless of geographic boundaries. In this system, the privacy of patient medical records can also be protected, and only those with medical authorization can access it during specific time periods.
Music Production
One of the main benefits of blockchain technology is that it eliminates unnecessary middlemen or middlemen, the music industry is a prime example of this where if the artist is inefficient then the This will directly result in low remuneration for them. At this time, some blockchain-based projects emerged, dedicated to seeking a fairer transaction and business environment for music creators, such as Artbit, a company where former Guns N’ Roses drummer Matt Soren is the director.
Carbon Offset
As a highly industrialized country, China’s environmental changes have been huge. In March 2017, IBM and Energy-Blockchain Labs jointly launched the Hyperledger Fabric blockchain project to use it to discover China's carbon assets, which is not only for tracking carbon emissionsCreating a measurable and auditable system also provides a tradable market for companies seeking to offset energy consumption while incentivizing green industrial practices.
Supply Chain Management
Supply chain management is considered to be one of the better cases of applying blockchain because it is very suitable for express delivery or delivery of goods from shipment to receipt. The entire process from manufacturer to store. IBM and Walmart jointly launched the Blockchain Food Safety Alliance in China. The project is also run in cooperation with JD.com, aiming to improve food delivery tracking and safety assurance, making it easier to trace food safety issues.
China has proven to be a mature testing ground for blockchain projects, and it is also home to the world’s first blockchain for agricultural products (5.180, -0.25, -4.60%). World-renowned food trader Louis Dreyfus Co has partnered with Dutch and French banks to establish a blockchain technology project that will enable transaction settlement in the process of selling soybeans to China to be faster than traditional settlement. Method is faster.
Diamond Industry
The world’s most famous diamond company, De Beers Group, has its own blockchain company and has begun operations, with the aim of “for every diamond registered on the platform. Diamonds create a digital record”. Taking into account people's concerns about the source of diamonds, the ethical standards of origin, and the risks of diamond quality, blockchain technology is naturally a good choice, because every record of it is indelible, and it will ensure the authenticity of every diamond. The electronic data itself is as long-lived as the data itself.
Real Estate Transactions
Currently, Ukraine is the first country to use blockchain technology to facilitate property transactions. Michael Arrington, the founder of the famous technology website TechCrunch and a cryptocurrency player, used the smart contract of the Ethereum blockchain to remotely purchase and resell a property in Kiev. This transaction was conducted by a professional in the blockchain industry. Completed by Propy, a startup that specializes in on-chain real estate transactions.
Fisheries
Blockchain technology is now being used to support the development of sustainable fisheries. Illegal fishing is a common problem in the industry, and blockchain's distributed ledger technology provides a way to prove where the catch comes from, how it is processed and sold. This “net-to-fork” supply chain allows inspectors to determine whether the fish being caught comes from areas that violate human rights, or from countries affected by economic sanctions.
Art Paintings
Similar to the diamond trade, the art industry relies on the provenance and authenticity of artworks. Although blockchain cannot identify whether a painting is an original or a fake, it can be used to prove that the Identification of previous owners of the painting. In addition, blockchain technology is now also being used as a means of acquiring art, allowing tangible items to be easily traded and exchanged anywhere in the world without the need for physical transfer from secure storage.
Public facilities
In the Australian city of Fremantle, solar panels are being used in a project dedicated to distributed energy and water system management using blockchain technology. Sunlit areas are used to capture electrical energy, which is then used to heat water and provide electricity. All this energy conversion and usage information will be recorded in blockchain data.
In Chile, its National Energy Commission has begun to use blockchain technology to verify the country’s energy usage data. Some sensitive data will be stored in the blockchain. The application of this technology can be regarded as the electricity foundation of this South American country. A means of modernizing facilities and operating them safely.
LGBT Rights
Blockchain helps build the “pink economy” and also helps the LGBT community fight for their own rights without revealing people’s identities. This is an extremely This is an important issue because crimes of discrimination against the gay community often arise, especially in countries notorious for human rights violations where homosexuality is illegal, or at least not allowed.
Catastrophe Bonds
Catastrophe Bonds may be the only hope for victims of earthquakes, tsunamis and other natural disasters. Blockchain allows for fast and transparent reconciliation between parties and ensures that the system can continue to operate normally without human intervention. Blockchain is now successfully used in the settlement mechanism of catastrophe bonds.
Tourism
Local institutions in Hawaii are studying how to use blockchain technology to improve the economy, such as opening Bitcoin and other currency payment methods to facilitate tourists' transactions for local goods and services. Using this method, the Hawaiian government hopes to vigorously attract tourists, especially tourists from Asia, to spend more money locally and enhance Hawaii's economic development.
Homeland Security
In 2016, the U.S. Department of Homeland Security (DHS) announced a project that would utilize blockchain technology as a means to securely store and capture data transmissions. DHS uses Factom’s blockchain technology to encrypt and store data captured by security cameras and other sensors. The application of this blockchain technology will greatly reduce the risk of data leakage. Currently, the project is still in progress.
Maritime Transportation
The benefits of blockchain for recording ship transportation data are self-evident. Currently, shipping projects in some places have adopted distributed ledger technology. In the maritime logistics industry, blockchain Chain technology can make the inevitable cumbersome management procedures in international trade more transparent and orderly. Maersk, one of the world’s largest ocean carriers, was a pioneer in utilizing blockchain, and now ZIM, an international shipping company, has followed suit.

⑶ What are the reliable marketing and promotion methods of blockchain, or intelligent marketing platforms?

Blockchain marketing and promotion in the outer circle of the city:
When a blockchain project is first launched, it is a great opportunity for brand promotion. Promoting the project together with the brand can not only enhance the popularity of the blockchain brand, but also greatly attract users to pay attention to the project application.
There are currently 10,000+ blockchain people in the outer circle of the city. If you want to do blockchain advertising, then try City Outer Circle!

⑷ How does blockchain solve pain points and change social networks?

In theory, it can subvert existing social networks, but in fact it still faces many technical and policy problems. For example, DECENT, a relatively popular blockchain content publishing platform in recent times, has crowdfunded nearly 5,881 Bitcoins in the currency circle, equivalent to approximately 28 million yuan. This is a decentralized content sharing platform that anyone can participate in without any restrictions. However, it still faces the risk of policy supervision globally. Now I can only use one sentence to describe the blockchain: the ideal is plump, the reality is skinny.

⑸ How to interpret blockchain in the simplest way

Everyone hears 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. But 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: After Lao Wang borrowed 1,000 yuan from Lao Li, he then used a loudspeaker to shout in the village, "I, Lao Wang, borrowed 1,000 yuan from Lao Li today. Everyone Record it quickly." 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.

Think back, you usuallyHow do you trade with others: You can choose a beautiful piece of clothing in a physical store, confirm that the quality of the other person's clothes is good, and the other person confirms that your money is real money, then we 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 extra 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 ledger to everyone, so that everyone has the right to keep accounts. We call it 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, C 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 how to arbitrate and distribute through code, 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 Blockchain is simply understood as a ledger, which is the simplest explanation.After reading it, and breaking down each of its features, there are many areas where it can be applied.

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, no closed mind... just like "stone" to do things).

Confucius Lingshi Museum in Qufu, Shandong

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 type of technology similar to NoSQL (non-relationalThe general term for technical solutions such as database) is not a specific technology, and 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. The same is true in the world of blockchain. 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 also 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 it.What are the numerical changes on 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, 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, trustless, Collectively maintained (Collectively maintained), 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 maintenance (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 When nodes cannot trust the other party they are communicating with, how can they create a consensus basis for secure information exchange without worrying about data being tampered with. 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 the 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 influenced by any one party.manipulation.

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 pointJust above the tipping point—the early stages of a major transition nearly as profound as 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 applications, 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 the person's ledger that records the fastest and best quality at the same time node to copy, send and connect in series. Finally, the thicker and thicker the stack is, the more blocks will be formed.

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 wasThe center has the power 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. The core of blockchain is technology.

⑹ How blockchain technology can play a greater role in economic and social development

As the construction of a transportation power continues

In September 2019, the Central Committee of the Communist Party of China and the State Council The "Outline for Building a Powerful Transportation Nation" was issued, and it is planned to basically build a strong transportation country by 2035. In the "Outline for Building a Powerful Transportation Nation", in addition to "reducing costs and increasing efficiency" in my country's transportation based on existing infrastructure, advanced transportation equipment plays an "innovative" role, mainly transforming the incremental growth of my country's transportation. In the "Outline for Building a Powerful Transportation Nation", advanced equipment mainly includes large-scale carriers and special equipment to promote the upgrading of equipment technology; research and development of autonomous driving, vehicle-road collaboration, underwater robots, large-scale deep-sea multi-functional rescue ships, etc.; and the widespread use of smart high-speed rail , smart roads, smart shipping, etc.

⑺ Which website specializes in blockchain media information

I happen to know your question, please see the answer below:
Blockchain is an important concept of Bitcoin. It is essentially a decentralized database and serves as the underlying technology of Bitcoin. The blockchain is a series of data blocks generated using cryptographic methods. Each data block contains a piece of the Bitcoin network.Transaction information is used to verify the validity of its information (anti-counterfeiting) and generate the next block.
The current information websites in this area in the industry include:
1. Diluian.com: Diluian.com is a professional blockchain media information portal. Diluian.com gathers big data from global blockchain trading institutions. , with technology as the core, we have created multiple core sections such as Mining Chain Index, Mining Chain Flash News, and Mining Chain Academy to tap the value of blockchain and provide one-stop blockchain for blockchain entrepreneurs and blockchain investors. Chain service system!
2. Golden Finance: A well-known old website in the industry.
3. Caiyunbit: It is also the old cloud in the industry.

You can learn more about it yourself.