怎么看懂区块链,怎样识别区块链项目?

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区块链技术是一种分布式的记账技术，它能够创建一个去中心化的网络，使用户可以在网络中进行安全的交易，而不需要第三方机构来保证交易的安全。它的工作原理是，将所有的交易信息存储在一个可以被多个用户访问的数据库中，这个数据库可以被称为“区块链”。每当有新的交易发生时，这个数据库就会更新，以确保每一笔交易都是安全的。

比特币是一种基于区块链技术的加密货币，它是一种可以被用户通过网络进行转账的货币，而且比特币的交易是安全的，不需要第三方机构来保证交易的安全。比特币的交易是通过区块链技术来实现的，它可以将每一笔交易信息存储在公开的数据库中，以确保每一笔交易都是安全的。

智能合约是一种基于区块链技术的自动执行合同，它可以让双方在线上完成交易，而不需要第三方机构来确保交易的安全性。智能合约的工作原理是，当双方达成一致时，它会自动将交易信息存储在区块链上，以确保交易的安全性。智能合约可以让双方在线上完成交易，而不需要第三方机构来确保交易的安全性，这样可以大大提高交易的效率。

请查看相关英文文档

㈠ How to introduce the blockchain in 3 minutes in a simple and easy-to-understand manner, and what its commercial value will be in the future

There is a real joke, an engineer from Ant Financial, He wrote a blind date resume, and the job description in it was "code farmer", but no one clicked it for a long time. Later, he changed his work experience to "blockchain" and received 381 love letters at once.

From workers in high-tech industries to square dancing aunties, it seems that everyone is participating in the blockchain carnival. So what exactly is the seemingly mysterious blockchain? After reading the following content, you will have completed the journey from beginner to beginner.

1. What is blockchain?

To put it bluntly, the blockchain is "everyone keeps accounts together." Any database needs a big housekeeper to be responsible for "accounting" (maintaining the system and entering data). But after using blockchain technology, the concept of this "central steward" disappears, and each of us can participate in accounting. So the question is, whose record will ultimately prevail? Of course, it is the person who completes the work well and quickly. A system that strictly adheres to fairness will select this person based on the algorithm, write the contents recorded by him into the ledger, and send the contents of the ledger during this period to everyone in the system. of others to make backups.

2. What is so powerful about blockchain technology?

Any new thing must have unique advantages if it wants to develop rapidly, and the same is true for blockchain technology. First of all, blockchain technology ensures the security of the system. In the absence of a central steward, everyone is a defender of the home, which means that destroying some nodes has no impact on the system at all. Second, the recording process cannot be cheated. Everyone in the blockchain system has the same ledger, and the entire process is open and transparent. The system will determine the final result based on the opinions of the majority. It is difficult for an individual to hack into so many computers at the same time, and it is meaningless to just modify one's own results. Who would do such a thankless task? Third, and most importantly, the blockchain completely abandons the existence of "credit intermediaries". Credit intermediaries are the platforms that we must pass through when transferring money, such as traditional banks. Now any two strangers can directly complete mutual trust transfers, and the efficiency has been improved not only a little!

3. What is the use of blockchain technology? ?

As mentioned earlier, the main advantages of blockchain are that it does not require the participation of intermediaries, the process is efficient and transparent, the cost is very low, and the data is highly secure. That is to say, any industry that has needs in these three aspects can use blockchain technology. Here are a few examples:

In the banking industry, the use of blockchain technology is equivalent to updating a digital, secure and tamper-proof General ledger books. In fact, Swiss bank UBS and Barclays Bank in the UK have already begun experiments, hoping to use it as a way to accelerate back-end system functions and clearing and settlement capabilities. Some institutions in the banking industry claim that blockchain may reduce middleman costs by 20 billion.

In terms of car rental, blockchain also has great potential. A future customer selects the car they want to lease, entering it into the blockchain's public ledger; then, sitting in the driver's seat, the customer signs the lease agreement and insurance policy, while the blockchain updates the information simultaneously. This is a foreseeable future for car sales and car registrations.

In terms of medical and health care, blockchain technology allows hospitals, patients and all parties in the medical benefit chain to share data in the blockchain network, and Don’t worry about data security and integrity. This means more accurate diagnosis, more effective treatment, and an improvement in the health system’s overall ability to deliver cost-effective care.

Blockchain is not cold-blooded. It has been implemented in applications that are closely related to our lives. For example, the application of Ant blockchain ranges from public welfare, to mutual insurance, to traceability of product authenticity, to traceability of rental housing.

In 2018, blockchain will "return to the world."

Blockchain, do you really understand it? Since it says three minutes, let’s give a simple answer.

1. What is blockchain;

2. What are the benefits of blockchain;

3. What are the uses of blockchain;

4. Blockchain technology and existing problems;

Let’s first look at the first question: What is blockchain

Let’s look at it literally. Blockchain is called Blockchain in English. This is a very good word. The English name is well chosen and the Chinese translation is also very beautiful.

1. What is a "block"?

You can think of it as a record, or anything, which forms such a record during the production stage. This thing can be any physical or virtual object in the Internet of Everything.

For example, if you generate a Bitcoin, which is a thing, it actually corresponds to a block. This block is a record of what it is.

When you produce a bottle of medicine in the future, a block is actually generated when this bottle of medicine is produced. When it leaves the factory, it needs to be recorded once, and this corresponds to it one-to-one.

This is the first dimension.

To make it easier to understand, for example, each of us is born with a unique identifier, which is our DNA. All species in the world have different DNA. Every individual's DNA is different.

Your parents can name you Zhang San, Li Si, Wang Wu. These names can be repeated, just like a bottle of medicine, whether it is aspirin or penicillin, these can also be repeated. Famous. However, human DNA is different. Even if you have identical brothers and sisters, your DNA is different, so this is your unique identifier. And once your DNA is formed, it cannot be changed. This is a benefit of the blockchain.

2. What is "chain"? The chain is actually a process. You can think of it as a transaction process. After this bottle of medicine leaves the factory, it enters the warehouse from the workshop and passes through a certain door, and it will record the process.

Of course, this requires automatic computer recording, and the cost of human recording is too high. Then, packing is a process, and transportation to the cargo transfer station is another process. Then it is loaded into a car and transported to the wholesale station, which is the next process.

Every step of the process is recorded. It is a process to go from the wholesale station to the store, it is another process for the people in the store to receive this batch of medicines and put them on the shelves, and it is still a process for you to buy them. Finally, when the whole process is connected, you will have a way to track the entire process of this bottle of medicine and know its authenticity, because once this bottle of medicine is produced, it will be bound to the blockchain, as well as to people and people. The same is true for DNA binding, which cannot be changed, but it can be seen and tested.

The doctor can also determine whether this person is you by testing DNA. So in terms of nature, if we virtualize it, it is actually a smart contract. You have signed a sales relationship with one of your customers. Once this happens, it cannot be changed. Then everyone can only execute it. This execution process is the same as the tracking of drugs I just talked about.

Second question: What are the benefits of blockchain?

1. Mathematically speaking, it is very beautiful. It changes from the past that you had to own something before you could know its properties to that you don’t own it, but you can ask questions Learned many details about it.

Mathematically speaking, this is a perfect asymmetric situation. You can tell whether it's true or false, but you can't change it.

2. Theoretically speaking, blockchain is verySafe, for example, a bottle of medicine. If you participate in the process, others cannot see this information. That is to say, if you buy this bottle of medicine, you can know where it comes from, but others cannot. knew.

For the same reason, for example, if we sign a contract, others can verify the contract. If you go to a bank for a loan, he can ask you the amount.

However, he cannot obtain this contract, and he cannot steal this contract from your computer.

Blockchain also has some very interesting properties. For example, a block chain can be divided into two at will, or several can be combined into one, etc.

3. Blockchain is transparent, which means that everyone abides by this algorithm and there is no special agreement in private. So, if you believe in this algorithm, it means you believe in me and believe that I didn't do anything fishy. I will not secretly do anything in the contract to make you suffer losses.

This is a beautiful place theoretically and mathematically.

In the third block, let’s take a look at the uses of blockchain

1. Bitcoin is a cryptocurrency, and the Ethereum currency that everyone uses now is also a cryptocurrency. Of course, you can make another one based on it, either Zhang three coins or Li four coins. As for whether it can replace the currency of the future, this is doubtful.

2. Financing, we used to divide financing into three stages: the first stage is to get a loan from the bank. If you want to open a restaurant, you need to mortgage something. The second stage is that you issue some stocks and I sell 10% of the stocks, so that I can obtain part of the funds.

The third stage is actually crowdfunding. For example, if I want to write a book, it may cost 50,000 yuan for the publishing house to publish it. If any of you can give me 50 yuan at the beginning, I will use it in the future. Once the book is written, give everyone a copy. You will get the book, and of course I will publish it. But there is a problem. For example, I sell this book for 100 yuan and you get it for 50 yuan. What if my book sells very well, assuming I sell 100,000 copies, but you don’t seem to benefit from me? what to do?

Is there a fairer way to measure everyone's contribution? One way is to issue a cryptocurrency (ICO). When the business we do becomes bigger in the future, you can benefit from it.

3. Smart contract, for example, sign a contract. In the future, the smart contract can become like this. All the nodes in the middle are determined when the contract is signed, such as building or decorating a house for you. , your payment must be given to me at any stage of the decoration. If you accept it, no problem, the payment will be automatically given to me.

You can even sign with my supplier, which means that as soon as my money arrives in my account, I will give it to my supplier immediately. This will save a lot in the futureThe issue of triangular debt includes the issue of arrears to migrant workers.

Blockchain can also be used for property registration, car registration, etc. Of course, another great use is gambling. In fact, gambling is the most willing to adopt new technologies because it is closely related to money.

After talking about the benefits of blockchain, let’s take a look at the technology and existing problems of blockchain.

Today’s blockchain is basically the second generation and the first generation. It is the Bitcoin generation. It has many problems. It is not a platform, but is actually a specific application.

The second generation is represented by Ethereum. It is a platform on which you can issue your own coins, and it removes the concept of mining machines, so its transaction costs will be much lower. . The reason why ICOs are everywhere today is because with Ethereum, you can issue coins. Unlike in the past with Bitcoin, you had to completely copy its set and copy it again. Today you are on Ethereum. , it is easy to issue your own currency, just like you can easily make your App on the Android operating system today.

There are three problems with Bitcoin transactions

1. The transaction delay is very long. I have asked people who specialize in Bitcoin transactions and the delivery time ranges from two hours to two hours. Days wait, so it is very inconvenient for you to use it to launder money. After the RMB is converted into US dollars, it may fall by 20% in two days, and you will lose 20% of your money.

2. It cannot be distributed. Like Bitcoin, a few people in the early days took away a lot of its shares, so how to distribute it in the future is also a problem. No one understands it clearly, so it is difficult to use it as a currency. a currency. Because if it really becomes a currency that everyone uses, it will be equivalent to the first few people taking away a large part of the world's property.

3. Transaction costs are high. For example, a cup of coffee at Starbucks in the United States costs $2.50 on average. You usually pay money at the counter, and the transaction time is only one minute. If you want to use Bitcoin, you have to wait two hours before you can get your coffee, and the transaction costs are extremely high, the electricity bill alone is $20. In other words, if you pay $2.50 for coffee, the transaction cost of electricity is $20, so this is unrealistic.

Blockchain has high risks. This risk is not only a technical risk, but also a policy risk. In fact, this is also an opportunity. Whoever solves this problem will get the opportunity. Its transaction costs are also very high, so whoever can develop new underlying technologies and reduce this transaction cost will make a lot of profits in the future.

Some people say it is the next generation of the Internet. I don’t agree with this, but it will definitely be a supplement to the Internet. Some people say whether it can subvert the central bank, but this is not certain, because there is no reason why the central bank or these big banks cannot do this themselves, so those who expect it to subvert the central bank may be too happy too early.

Perhaps in the end it was these large financial institutions in the past that used the blockchain to update themselves.

Talk in the vernacular and get useful information!

Literally, blockchain is blocks and chains, and some relationship between them. It is essentially a distributed accounting method and a network database system that cannot be tampered with.

The current development directions include digital currency, payment, smart contracts, defi finance, web3 and so on. It is still in the initial stage of development and is a back-end technology. Most projects are still speculating and financing.

Today’s Afghanistan may best prove the value of Bitcoin, and there is no problem with value storage

Blockchain is not just a technology, it is a way of trust transfer, value The way it is delivered may have huge potential in the future.

Keywords: block, chain, database, ledger, Afghanistan, currency speculation, value, technology, market

First, what is a blockchain? Blocks and chains are an accounting method and a form of network data storage.

Literally speaking, blockchain refers to blocks and chains. This block actually records the transaction records of the entire network, or the execution process result data of smart contracts, etc.

Every once in a while, the entire network will produce a block. This block records all transfer data, and the blocks need to be connected by some kind of "chain".

This chain is an encryption algorithm. Some information of the previous block is used to calculate and obtain some information of the next block. They are linked together. The latter block can trace back the previous block and needs to be modified. The next block must modify the previous block, all the way to the first block. Regarding the details of these issues, I have written many articles before. If you are interested, you can go back and take a look.

Blockchain is actually an accounting method, or a database storage method. Please pay attention to what I say below. The whole process is the operating mechanism of blockchain.

Each node in the entire network has the same status and runs the same program. This program is used to collect, encapsulate and package all transaction record data records that occurred in the entire network within a period of time. Then broadcast it to the entire network

Let’s take Bitcoin as an example. Once this packaging and encapsulation is completed, you can obtain the right to produce the block. A certain amount of Bitcoin can be issued every time a block is produced. Since the nodes in the entire network run the same program, there is no center to control everyone. Therefore, the currency issued is irrevocable and cannot be changed.

How to decide who has the right to make a block? This requires the use of the so-called consensus mechanism, which is to establish a rule and use who produces the block as the benchmark to solve the problem of network consistency. The mainstream consensus mechanisms include POW mechanism and POS mechanism. Proof of work and proofof stake. Proof of work, who has done more work, and proof of equity, who has staked more assets

Pow means that everyone calculates a difficult mathematical problem together, and whoever calculates it will win. Has the right to produce blocks. Pos means that everyone takes out their family assets as mortgage, and whoever mortgages more. It is possible to be selected as a block producing node.

The essence of this approach is that you have to pay a certain price and receive a certificate of investment, which essentially builds a kind of trust.

When all these tasks are completed, a block can be produced, and the block will be connected to the previous block one by one. This is the entire block sequence. Note that the entire blockchain world will produce many blocks, connected to one chain after another, but everyone will only recognize the longest chain, and short chains will be discarded.

To put it simply, each network node uses a program to package transactions within a period of time, and then connects the transaction blocks one after another and saves them in each node, but an encryption algorithm will be used in the process. Ensure that node information is not leaked, ensure that user information is encrypted, and ensure that the information in the block is not hacked or tampered with

Second, the block The current development of the chain, various projects and significance, at this stage are more about currency speculation, and there is no problem with value storage.

Blockchain has been developing for twelve or three years since the Bitcoin white paper in 2008. It has also experienced various evolutions and developments.

For example, now it has gone from being able to issue currency in a distributed way to now having huge functional expansion. The landmark event is the birth of the Ethereum smart contract.

I have explained many times that a smart contract is an automated contract signed by two or three parties. It will be automatically executed as long as the conditions are met. It is essentially a program with infinite possibilities and the judge in the blockchain world. Various functions can be input into the program, and the program exists. Blockchain has become rich and colorful.

Current blockchain applications mainly include the following aspects: smart contracts, payments, cross-chain assets, oracles, defi, web3 storage, etc. I will briefly mention two. Let’s take an example and talk about its commercial application.

For example, defi applications are quite popular on Ethereum now. Defi is decentralized finance. Abbreviation for decentralized finance.

What does it probably mean? It is to move all financial-related businesses in real life, such as mortgages, insurances, and loans, onto the blockchain.

This field is very popular now, and the reason is simple. It is very suitable for blockchain. As I said, a smart contract on the blockchain is a contract. If the contract conditions are met, execution can be automatically triggered.

In the past you might have gone to the bankApplying for a loan can be very troublesome, requiring various signatures and various verifications, and the bank may not be open on weekends and nights

The blockchain network operates 24 hours a day. If you want to run various assets on it and do various mortgage transactions, you only need to click and there is a software terminal.

Of course, the real assets will be frozen in the process and mapped to virtual assets. After the transaction is completed, they will be exchanged for real assets. Cross-chain technology and oracle technology may also be used in this process, which I have written in detail in other articles.

It roughly means cutting off banks through decentralization, and direct point-to-point transactions. The security of transactions is guaranteed by blockchain technology, code and cryptography.

There is also the current web3 storage class. For example, the leading project fil. His vision is to take out all the scattered hard drives. Break all the data and information that need to be stored on the network into small pieces

and then distribute them to the entire network. When we want to use network data in the future, we no longer need large network database or server. In this way, Internet giants cannot charge high service fees. There is no way to maintain a monopoly.

If you want to obtain stored information, just take a taxi online like dd. You pay for a taxi, so that information on the Internet can flow freely. Costs will drop significantly.

Of course, these visions are grand and huge, and the current blockchain development is still in its early stages. There are still some technical difficulties to be overcome and some underlying systems to be established, but there is no problem in this direction.

The original digital asset projects like Bitcoin have now been proven to be very safe. Just like this situation in Afghanistan, the first thing that comes to my mind is Bitcoin. He is the first violent and unplunderable asset.

Your house may be occupied and blown up, and your gold may be robbed. And if you have Bitcoin, it's much easier. He can't snatch this thing away, because the mnemonic phrase and private key are in your mind, and he doesn't even know whether you have this thing in your mind. If you want to pass it on to your child, just ask him to memorize the key and mnemonic phrase.

It is precisely because we are now in a stage of financing and bubbles that all the news you see on the Internet is still speculation.

Also, this thing is a back-end technology. For example, Guangdong Province already has blockchain invoices. For example, there are already some blockchain apps for judicial certification, but for the front-end For you, you can't feel it. There is an extra string of hash codes on the invoice, can you tell the difference?

This is why when it comes to blockchain now, everyone is speculating on coins, but in fact it has certain applications and future technical logic.

Third, it is essentially a mechanism of trust.Exploration of value transfer methods and social governance methods.

What is the essential value of blockchain? The most important thing is that it is a way of credit transfer. Because there is enough credit, real-life assets and property values ​​can be spread on the Internet in the form of information codes.

Mainly in these aspects.

First, before Bitcoin, people did not know how to protect a piece of information, because information on the Internet can actually be copied. Bitcoin solves the problem of uniqueness of information assets. With scarcity, there is value in transactions and storage.

The second is decentralization and disintermediation. We used to do everything. All require some kind of intermediary. For example, when you borrow money, a bank acts as an intermediary, and when you buy a house, various institutions and real estate agencies act as intermediaries.

You cannot buy or sell directly. Because you don't have enough credit. We usually come to find a third party, but the third party is usually made up of people and may also do evil.

For example, the master who could whip five lightning whips a while ago. If he calls you all kinds of names at the beginning, you may be frightened. You won't know he is a liar until he is punched and lying straight there. This is human credit, which is unreliable

Blockchain ensures credit through code, cryptography, and consensus mechanisms. We no longer need a powerful third party. Note that this third party will often become a monopoly boss.

The third is to reduce the cost of coordination, communication and entry barriers.

If we want to become richer, we need to trade in the market. And transactions require coordination and division of labor. Essentially, the companies and organizations we work for are intermediaries.

You have to integrate your resources through this kind of intermediary, transform your labor force, your brainpower, and your ingenuity into final products and sell them on the market.

The smart contract technology of blockchain technology can break up these contracts in a decentralized manner. People in the market can combine freely to establish a new type of organization that is completely transparent and cannot tamper with the rules, which is a blockchain autonomous organization. The future of this kind of organization may be more promising than that of ordinary joint-stock companies.

You can join or quit an organization at will, and the trust between you and others has been resolved. You can cooperate with others and sign smart contracts to complete joint collaboration and complete a certain product. We no longer have to worry about some big capitalist taking advantage of everyone and getting the bulk of the profits.

So the Bitcoin blockchain is essentially a big social experiment, through the consensus mechanism, the decentralized decision-making method, and the distributed signing of smart contracts. Gradually and completely change the original appearance of our society. Restore the original nature of the market economy, point-to-point, direct communication between peopleThe ideal of ease.

To summarize. Blockchain is a block of information connected together through an encryption algorithm. It is essentially an accounting method and a network data structure

Through decentralization, you can do finance, storage, and decentralize many things, but now it is still very In the initial stage, most projects are still in the stage of speculation, financing and concept development.

The value storage capability of the blockchain has been proven to be problem-free, very safe, and cannot be plundered by violence.

The essence of blockchain solves the problem of credit intermediary, and at the same time can reduce the cost for people to work together, lower the threshold for enterprise entry, improve social efficiency, make social transactions larger, and allow We are richer.

I recommend the book linked below, it is easy to understand. Like You Pump tells the history of the birth of blockchain, the underlying technical logic of blockchain, and some mainstream projects. Learn some knowledge about blockchain, feel more at ease, and no longer worry about whether it is a scam.

㈡ How to check whether a blockchain project is reliable

Is the Oumipai Omichain European and American Manor real?

㈢ Where can I learn about blockchain in a more easy-to-understand way?

There are many channels to learn about blockchain. The key is how you choose.
① You can buy some books about blockchain and learn relevant knowledge. You can also take notes in your free time. If you encounter something you don’t understand, just read it and solve it.
②, you can participate in some offline blockchain training and offline exchange meetings, where you can learn a lot about blockchain and make friends with some blockchain circle of friends.
③ You can watch some blockchain videos on the Internet. The content is easy to understand, and it is also combined with Juyu’s actual examples. It is also interesting to learn.
It is recommended to pay attention to the official website of Heshu Media, so that you can more easily understand what blockchain is and take you into a new world.
There are many channels for learning blockchain. The key is to make your own choice.

㈣ How to explain blockchain in a popular way

Blockchain is a decentralized distributed ledger database. The advantage of this distributed ledger is that buyers and sellers can Direct transaction without any intermediary. Everyone has a backup, even if your copy is lost, it will not be affected.

(4) How to look at blockchain in a general way Extended reading:

Blockchain application fields

1. Financial field

Blockchain has potentially huge application value in financial fields such as international exchange, letters of credit, equity registration and stock exchanges. Applying blockchain technology to the financial industry can eliminate the need for third-party intermediaries and achieve point-to-pointDirect docking to quickly complete transaction payments while greatly reducing costs.

2. Internet of Things and Logistics Fields

Blockchain can also be naturally combined in the Internet of Things and logistics fields. Through blockchain, logistics costs can be reduced, the production and delivery process of items can be traced, and the efficiency of supply chain management can be improved. This field is considered a promising application direction of blockchain.

3. Public welfare field

The data stored on the blockchain is highly reliable and cannot be tampered with, so it is naturally suitable for use in social welfare scenarios. Relevant information in the public welfare process, such as donation projects, fundraising details, fund flows, recipient feedback, etc., can be stored on the blockchain and transparently and publicly disclosed conditionally to facilitate social supervision.

4. Insurance field

In terms of insurance claims, insurance institutions are responsible for fund collection, investment, and claims settlement, and often have high management and operating costs. Through the application of smart contracts, there is no need for the policy holder to apply or the insurance company to approve it. As long as the claim settlement conditions are triggered, the insurance policy can automatically settle claims.

㈤ How to understand blockchain

Blockchain and blockchain technology have been widely accepted and used by people. However, I have always had little knowledge about blockchain and blockchain technology, and I am even more confused about the working principle and operation method of blockchain. Maybe you have read a lot of related reports, and there are a lot of professional terms and jargon, but you still don’t have a clear understanding of it. Here Bit Window will explain it to you in a popular way.
Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm.
This is usually the professional accompaniment we see in reports, but what is the specific form?
First of all, no matter how big a system or how small a website is, 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 is maintained by Alibaba’s team. Everyone must think that this approach is natural, but this is not the case with blockchain technology.
Secondly, blockchain technology is also called distributed ledger technology. That is, if we imagine the database as a ledger: for example, Alipay 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 the person who has the fastest and best accounting during this period, maybe within ten seconds, or ten minutes. This person will do the accounting, and he will record the changes in the database and the ledger during this period. Recorded in a block.
We can imagine this block as a page. After the system confirms that the record is correct, it willThe data fingerprint of the past ledger is linked to this paper, and then this 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.

Finally, since everyone (computer) has exactly the same ledger, and everyone (computer) has completely equal rights, there will be no loss of contact or loss of contact with a single person (computer). crash, causing the entire system to collapse.
Since there are exactly the same ledgers, it means that all data is open and transparent, and everyone can see the digital 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 only has a few nodes, it may be easy to do, but if there are tens of thousands or hundreds of thousands, and they are distributed everywhere on the Internet, unless someone can control most of the computers in the world, it is not very easy. It is possible to tamper with such a large blockchain.
I wonder if I can understand this simple explanation?
Bit Window, a website platform that specializes in providing Bitcoin news and information services

㈥ How to correctly view blockchain technology

From a technical perspective, blockchain It is likely to be a major technological revolution after the Internet. Currently, major corporate giants around the world are working hard on the research and application of blockchain technology. SAP opened a pilot version of the blockchain project in May last year. Banks in Japan and South Korea have just begun testing blockchain technology. Tencent has registered the trademarks "Ether Lock" and "Tencent Ether Lock". In April 2017, Tencent released the "Blockchain Solution White Paper" and announced that Tencent's blockchain industry solutions with independent intellectual property rights were also officially released on the official website. The network has launched the blockchain open platform "BaaS", which is a project based on blockchain technology independently developed by the network. It mainly helps enterprise alliances build their own blockchain network platforms. In 2018, we sold Jiabao smart mining machines to several companies. In November of the same year, the uton hardware wallet and ATM launch conference was held in Singapore.

The concept of blockchain has been proposed for a long time. This round of speculation by speculators in the A-share secondary market stems from the global hype of Bitcoin. Participants do not care about the technical value of the blockchain, but they care about how much profit and water they can get from the existing "seigniorage" by creating digital currency through the blockchain. Some institutional investors even hope to use their professional judgment and ability to control market sentiment to "cut leeks" from the large amount of blind influx of social funds. In view of the recent rise of the blockchain concept, all parties concerned must remain sober. Financial exchanges and intermediaries must wake up, reduce unnecessary advertising to mislead small and medium-sized investors, and ordinary people must also stay awake.

㈦ How to understand the blockchain in a simple and easy-to-understand manner

Blockchain is a technology that solves the core "trust" problem in the market economy and transforms unfamiliar people into The cost of trust between people is reduced to an extremely low level.

There is one crucial thing in the market economy, which is "trust." Without trust, no transaction would be possible. If you go to the market to buy vegetables, if you don’t believe that the pesticide content in the vegetables meets the standard, you won’t do business with that dealer; if you go to a small store to buy a bottle of water, if the clerk doesn’t believe that the money you give him is genuine, he won’t do it either. Sell ​​you the water.

The traditional small-scale farmer economy is an acquaintance economy. The scale of transactions is limited to people who are familiar with each other near the living area. Because an acquaintance cheats you, he will lose your social relationship and ruin his relationship with the entire acquaintance. Reputation in the circle. We believe that acquaintances are less likely to deceive us than strangers.

So, once we go beyond the scope of acquaintances, we need to use a very high cost to identify whether a stranger will cheat me, and how can I avoid the risk of being cheated. This situation will hinder transactions and restrict transactions.

In addition, trust issues naturally exist among people of different races, nationalities, cultures, religious beliefs, etc.

So in the market economy we are now in, why are there so many transactions between strangers? Because a new mechanism was born to solve the problem of trust among strangers.

So far, the most important mechanism to solve the trust problem is the "trust intermediary" institution and model.

As long as you and a stranger trust a third-party organization, you can use this third-party organization to solve the trust problem between you.

We call this third-party organization a trust intermediary. Governments and banks are trust intermediaries.

You think it’s okay to sell the goods you worked hard to produce to a stranger in exchange for a stack of RMB banknotes. That’s because the credit of the note-issuing bank and the authority of the government guarantee the guarantee. Currency value and validity of banknotes. Otherwise, who would want to sell something in exchange for a few pieces of ordinary paper?

In the age of the global village and the Internet, the people who buy your things may be strangers thousands of miles away who you have never met. The level of trust is even lower, so Alipay assumes the role of a trust intermediary. The buyer first pays the payment to Alipay's account. After receiving the goods and confirming that there is no problem, he agrees to transfer the payment to the seller. Taobao and other e-commerce companies have prospered rapidly in just over a decade.

The trust intermediary occupies a central position in the transaction system, and all transactions must use it to solve the trust problem.

However, the cost of trusting the intermediary itself is often huge.

As a trust intermediary, how much transaction tax does the government collect every year? Which industry is the most profitable? Financial services industry. Ant Financial, which owns Alipay, has annual profits exceeding 10 billion.

What does this mean? marketBoth parties to the transaction actually paid an extremely huge cost of trust.

If there is any way to eliminate or significantly reduce this trust cost, then the transaction costs of the general public can be reduced and the profits earned can be significantly increased.

So in the Internet era, blockchain technology came into play.

It allows transaction parties to get rid of intermediaries, solves the trust problem among strangers, and greatly reduces the cost of trust.

Because the blockchain can be expanded on a large scale, the data is open and transparent, and the data of each client is consistent, even if some clients are destroyed, the data security will not be affected. These highly reliable The technical features can solve the problem of trust among strangers at low cost.

This technology can be extended to all areas that can be digitized, such as digital currency, payment settlement, digital bills, certificates of rights, credit reporting, government services, medical records, etc.

In the medium to long term, blockchain will be a revolutionary technology that will bring about huge social changes like the existing Internet, and will have huge investment value and money-making opportunities.

In the future, companies that can integrate blockchain into different scenarios to promote applications may be the next group of BATs, the next Google, Microsoft and Apple.

As the first practical application of blockchain technology, Bitcoin has been widely accepted and used around the world. Millions of users and tens of thousands of merchants have accepted Bitcoin, a digital currency. The payment, as the exchange value of currency, is growing, and even because the total amount is fixed, the long-term value is bullish, and it has become a safe-haven asset similar to gold, and the price has skyrocketed.