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Ⅰ A simple and easy-to-understand introduction to what blockchain is

Blockchain is an important concept of Bitcoin and is essentially a decentralized database. , and as the underlying technology of Bitcoin. Blockchain is a series of data blocks generated using cryptographic methods. Each data block contains information about a Bitcoin network transaction and is used to verify the validity of its information (anti-counterfeiting) and generate the next block.
In a narrow sense, blockchain is a chain data structure that combines data blocks in a sequential manner in chronological order, and is distributed cryptographically to ensure that it cannot be tampered with or forged. Account book. Broadly speaking, blockchain technology uses block chain data structures to verify and store data, uses distributed node consensus algorithms to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses automated scripts to A new distributed infrastructure and computing paradigm that uses smart contracts composed of code to program and manipulate data.
European crowdfunding and Ethereum both utilize blockchain technology.

Ⅱ Blockchain’s sky-high price soft article costs 100,000 for 200 clicks. Why is it so expensive?

This is not a question of whether it is expensive or not. Besides, this kind of transaction is not a regular click-through. TOLL. The measure of value is only clear to both parties to the transaction, and we are just relying on the masses.

If you must discuss this topic, you must jump out of the question and discuss the problem? Discuss the market outside of the market? Jump out of the trading discussion and ask for a bright deal? Break out of the situation and discuss the essence? If this price and this kind of transaction existed, would it no longer be a normal transaction of 2 yuan for a pound of cabbage? At most, this is just the bright line of the transaction, and there is also a hidden line of the transaction that we don't know.

Whether it is speculation or insider trading, there is no actual value in discussing it.

Ⅲ Is Wisdom Chain a real currency? My friend said it is very profitable. It costs 1.3 yuan a piece. If you buy 10,000 pieces, it will become tens of thousands in 270 days.

How can I tell you this? I bought it at the beginning of May last year. It was only 2.5 yuan when I bought it. I bought 10,000 yuan. Then I locked up all the coins and sold the hatched coins. I recovered my capital in September last year, but by the end of November, It rose sharply, I remember the highest was around 17 yuan, but I didn’t have any coins at that time, because the incubated coins had been sold before, and the incubation period was about more than a year. In June this year, all the previously locked coins were returned, and now I'm just waiting for the price to go up. Now it's about 2.5 yuan. There was a fluctuation a few days ago and it went up to 3.7 yuan. I didn't sell it. A person with us bought 370,000 coins and earned more than 400,000 last year after excluding the principal. She still has about 180,000 coins in hand. So this thing still depends on your own intention. By the way, starting from June 20th, the incubation coins will no longer be incubated, and the number will be 590 million coins. Therefore, we are all waiting for its price to increase. Although we can sell it now Earn tens of thousands, but still hope it goes higher. As for what your friend said, one dollar for three dollars, that is definitely deceiving you. Of course, if it was before this year, it would still be possible, because there was a big drop before this year, so that’s probably it

Ⅳ How to use 3 minutes to make it simple An easy-to-understand introduction to blockchain and what its commercial value will be in the future

There is a real story about an engineer at 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 of his records 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 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 above, the main advantages of blockchain are that it does not require intermediary participation, 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, itDuring the generation stage, such a record is formed. 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 detected.

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 asymmetry.Case. You can tell whether it's true or false, but you can't change it.

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

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.

EvenYou can also 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 eliminate many triangular debt problems in the future, including the problem 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 formula 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 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, the early people took away a lot of its shares, so how to distribute it in the future is also a problem. No one knows 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, this is not certain, because there is noThere is no reason to say that 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 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 certain information of the next block. They are linked together. The latter block can trace back to 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 comes up with the block as the benchmark to solve the problem of network problems.Consistency issue. The mainstream consensus mechanisms include POW mechanism and POS mechanism. Proof of work and proof of stake. Proof of work, who does more work, and proof of equity, who stakes more assets

Pow means that everyone calculates a difficult mathematical problem together, whoever calculates it Whoever comes out has the right to produce the block. 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 cracked 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. I said that intelligence on the blockchainAn energy contract is a contract that can automatically trigger execution if the contract conditions are met.

In the past, it might have been very troublesome for you to go to the bank to apply for a loan. You had to sign various signatures and verify them, and the bank might not be open on weekends and nights

But with blockchain The 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, a method of value transmission, and an exploration of 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 brain power, 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.contract. Gradually and completely change the original appearance of our society. Restore the original ideal of market economy, peer-to-peer, direct transactions between people.

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.

IV What is blockchain and how to make money with blockchain

Blockchain is a term in the field of information technology. In essence, it is a shared database, and the data or information stored in it has the characteristics of "unforgeable", "full traces left", "traceable", "open and transparent" and "collectively maintained". Based on these characteristics, blockchain technology has laid a solid foundation of "trust" and created a reliable "cooperation" mechanism, which has broad application prospects.
The ways to make money in the blockchain are as follows:
1. Coin speculation. Coin speculation is like stock speculation. Coin speculation is the lowest threshold for making money in the blockchain;
2. Vendors, district Blockchain is a global market. Like small traders, you can move from a low-price platform to a high-price platform to sell and earn the difference;
3. Earn commissions for promotion. The blockchain method is to register first Exchange account, generate your own invitation link, and then promote it. If someone registers the exchange through your link and generates transactions, you can get a commission;
4. Mining, "mining" in Bitcoin is The accounting process;
5. Technical support, providing blockchain technical support to some teams and enterprises;
6. Opening a trading website and charging handling fees;
7. Developing wallets and wallets It is the infrastructure of the blockchain, just like the "Alipay" or "WeChat Pay" of the blockchain;
8. Be a blockchain project or infrastructure equipment supplier.

Warm reminder: The above explanation is for reference only and does not make any suggestions. There are risks in entering the market, so investment needs to be cautious. Before making any investment, you should ensure that you fully understand the investment nature of the product and the risks involved.After carefully evaluating the product, you can then decide whether to participate in the transaction.
Response time: 2020-12-02. For the latest business changes, please refer to the official website of Ping An Bank.
[I know about Ping An Bank] Want to know more? Come and see "I Know Ping An Bank"~
https://b.pingan.com.cn/paim/iknow/index.html

VI 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 usage model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanisms, and encryption algorithms.

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 dad keeps the accounts, and your mom 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 Body

Many people will encounter the dilemma of "prove 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, the blockchain is used to establish a universal record library with timestamps, so as to extract 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 apps such as Ctrip and Meituan to find and place orders for hotels and other services, and each platform earns commissions from them. 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 Q&A: 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 can monitor the status and initialization of software to 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

Ⅶ How to realize blockchain investment and how to make money from blockchain investment

In recent years, with the development of blockchain technology, more and more investors have begun to pay attention to blockchain investment, and they hope to invest in it. Blockchain gains more benefits. But the question is, how to realize blockchain investment and how to make money are the issues that investors are most concerned about. Next, let’s introduce how blockchain can be monetized and how to make money by investing in blockchain.

1. Methods of monetizing blockchain

1. Mining income: Mining is the most commonly used method of monetizing for blockchain investors. Investors can Earn income, the size of which depends on the investor's investment amount and the efficiency of mining.

2. Transaction income: Transaction is the most commonly used method of monetization for blockchain investors. Investors can obtain income through buying and selling. The size of the income depends on the investor’s investment amount and the efficiency of the transaction.

3. Loan income: Loan is the most commonly used method of cashing out by blockchain investors. Investors can obtain income through borrowing. The size of the income depends on the investor’s investment amount and the efficiency of lending.

4. Investment income: Investment is the most common way for blockchain investors to realize their profits. Investors can obtain income through investment. The size of the income depends on the investor’s investment amount and the efficiency of the investment.

2. How to make money by investing in blockchain

1. Reasonable investment: Before investing in blockchain, investors need to fully understand the development trend of blockchain, and investment opportunities in the market in order to make more informed investment decisions.

2. Reasonable investment portfolio: When investing in blockchain, investors should construct a reasonable investment portfolio based on their own risk tolerance in order to obtain higher returns.

3. Reasonable investment strategy: When investing in blockchain, investors should formulate a reasonable investment strategy based on market changes in order to obtain higher returns.

4. Reasonable investment timing: When investing in blockchain, investors should grasp the timing of investment according to market changes in order to obtain higher returns.

3. Risks of blockchain investment

1. Technical risks: Blockchain technology is an emerging technology, and its development trend is still unclear. Investors are investing When using blockchain, technical risks should be fully considered.

2. Market risk: The blockchain market is a very unstable market with large price fluctuations. Investors should fully consider market risks when investing in blockchain.

3. Legal risks: Blockchain investment is restricted by different laws and regulations. Investors should fully consider legal risks when investing in blockchain.

4. Operational risk: Blockchain investment involves complex technical operations.Investors should fully consider operational risks when investing in blockchain.

4. Summary

As can be seen from the above introduction, the ways in which blockchain can be monetized include mining income, transaction income, lending income and investment income; blockchain The ways to make money by investing include reasonable investment, reasonable investment portfolio, reasonable investment strategy and reasonable investment timing; the risks of blockchain investment include technical risk, market risk, legal risk of loss and operational risk. Investors should fully consider these risks when investing in blockchain in order to obtain higher returns.

VIII What is blockchain technology and how does it change business and financial models

What is blockchain technology and how does it change business and financial models? According to reports, since the end of March, the tour guide team led by Yang Feihu has been receiving inquiries from out-of-town individual tourists. "There are many families traveling to Wuhan from out of town. Several families come together by car or by high-speed rail," Yang Feihu said. , Yellow Crane Tower, Hubei Provincial Museum, and East Lake Scenic Area are still places to check in. "It's hard to get a ticket for the Hubei Provincial Museum now, and all the seats for the May Day period have been reserved." He and a number of parents looking for relatives went to Shuidun Town, Zijin County, Heyuan City, Heyuan City. Because Zhang Weiping once confessed that this was the place where Aunt Mei lived, and it was also the place where 8 of the 9 abducted children in the "Aunt Mei Case" were sold.

Ⅸ Is it difficult to develop blockchain technology?

Development is not difficult, but finding profit points is difficult.

The latest technological application of blockchain: Born out of the Bitcoin technology that emerged in 2008, it provides a decentralized credit establishment paradigm that does not require the accumulation of trust. The essence of blockchain technology is a decentralized and distributed structure of data storage, transmission and certification methods. It uses data blocks to replace the current Internet's reliance on central servers, so that all data changes or transaction items are recorded On a cloud system, the self-certification of data during data transmission is theoretically realized. In a far-reaching sense, this transcends the traditional and conventional information verification paradigm that relies on a center and reduces the cost of establishing global "credit." This point-to-point verification will produce a "basic protocol", a new form of distributed artificial intelligence, and will establish a new interface and shared interface for human brain intelligence and machine intelligence.

At present, basically all decentralized virtual currencies will use blockchain technology, such as Bitcoin, Fuyuan Coin, Litecoin, Dogecoin, etc.

How much does it cost to develop a blockchain wallet

The first thing you need to understand is that in the Internet software industry, there is no 100% fixed price, because different technologies have different prices, and different Function prices are also different, and the underlying architecture is different between a user budget of 10,000 and a user budget of 100,000. Therefore, if you find a fixed price, you must consider whether it is "volume sale".

The second step is to look at the functions that need to be implemented. First, determine the currency., and for example, some wallets, in addition to the storage and transfer functions, also have trading sections (currency? OTC? C2C? Contract?), holding currency to earn interest (how to hold it?), social networking (chatting alone? Or?)... ...., this is just part of it, there are so many things that need to be determined. These are uncertain and clear, and being haphazard in the early stage means more troubles in the later stage.

Furthermore, we need to discuss the effect we want to achieve, that is, whether there is a certain user base, how many users we estimate it can achieve, and what technology we want to use to achieve it? These all need to be determined, otherwise the system will not be able to support the bottom layer of the system if it is only 100,000 yuan but reaches 200,000 yuan.

There are also ports that need to be implemented, such as PC, native, H5, client, etc. In the software industry, these all need to be accurately determined without exception. Unlike physical items, such as coffee, there are also There are many types, but we would say that one similar to XX coffee is enough. The blockchain industry cannot be like this

To sum up, it is still difficult to understand the price of developing a blockchain wallet because, Only when the detailed or general details are determined can you make a detailed or preliminary bid. Therefore, if you want to know the specific price, you need to understand it based on your specific needs.