区块链可不可以不挖矿呢,区块链可不可以不挖矿赚钱

近年来，区块链技术受到越来越多的关注，它可以被用来构建一个安全、可靠的分布式数据库，从而实现去中心化的账本管理。那么，区块链可不可以不挖矿呢？本文将就这一问题，探讨三个相关关键词：去中心化，挖矿，拓展。

一、去中心化

去中心化是指在网络中不存在中心化的结构，也就是没有单一的数据中心，而是将数据分布到多个节点上，由网络中的每个节点进行管理和维护。去中心化的网络可以更有效地保护用户的隐私，提供更可靠的服务，并且效率更高。

二、挖矿

挖矿是指在区块链网络中的节点（称为矿工）使用计算机来解决复杂的数学问题，以获得网络中的比特币或其他加密货币。矿工通过解决数学问题来确认交易，并获得比特币奖励。挖矿是区块链网络中最重要的组成部分，它是区块链网络的关键技术，也是保护网络免受攻击的有效方式。

三、拓展

拓展是指将区块链技术应用到其他领域，以实现更多功能。例如，区块链技术可以应用于智能合约，实现更高效的商业交易；可以用于社交网络，实现更安全的社交体验；还可以用于物联网，实现更可靠的物联网应用。拓展可以为区块链技术带来更多的可能性，从而使其在更多的领域得到应用。

总之，区块链可以不挖矿，但挖矿是区块链技术的关键技术，是保护网络免受攻击的有效方式。此外，去中心化和拓展也是重要的关键词，它们可以将区块链技术应用到更多领域，从而实现更多功能。

请查看相关英文文档

① Why Bitcoin needs to be mined

Many people are curious about why people say that Bitcoin is mined. Let me explain to you why blockchain projects like Bitcoin require “mining”.

Transactions require bookkeepers

In order to complete transactions, transfers between buyers and sellers require trustworthy people and institutions to keep accounts and settle accounts.

For example, if you transfer 100 yuan to a friend through Alipay, Alipay will reduce your account by 100 yuan, and your friend's account will increase by 100 yuan. In this scenario, Alipay is the bookkeeper.

Information asymmetry problem

But Bitcoin was born without Alipay, WeChat, or banks to support it. Bitcoin is also not prepared to rely on these centralized institutions.

Designed by its inventor Satoshi Nakamoto, anyone can help with accounting, and you can get Bitcoin as a reward for accounting. But here comes the problem. There are many people who want to help with accounting to obtain Bitcoins. Who should they choose to do accounting with a low probability of making mistakes? This is actually an information asymmetry problem.

The Bitcoin system wants to select trustworthy people to keep accounts, but it does not understand the many participants who want to keep accounts. In order to solve this problem, many blockchain projects have come up with different tricks.

In order to make the bookkeepers trustworthy, some blockchains simply allow individual users to keep their own accounts. This type of project is called a private chain. In fact, the blockchain is of little use

< p> Some blockchain projects need to be reviewed and approved by other members before joining. This type of project is called alliance chain

There is also a type of blockchain project that allows anyone to freely join the accounting, which is called Public chain, Bitcoin belongs to this category

Mining reduces information asymmetry

To solve the problem of information asymmetry of "whether the bookkeeper is trustworthy", the public chain must Some means were used. In fact, their respective mining methods are trying to solve this problem.

The following is a brief introduction to commonly used mining methods and the principles for solving the problem of information asymmetry.

1. Proof of Work (POW)

POW is the abbreviation of Proof of Work, and participants need to prove that they have indeed spent enough work costs.

Satoshi Nakamoto designed a puzzle game. To solve it, a lot of calculations are required, which requires purchasing equipment, consuming power, and spending time. Whoever solves the mystery first will prove that he has indeed spent a lot of money, so he is responsible for keeping accounts and gets a reward. Then start a new round of puzzle solving, and so on. In this process, you drive a machine (computer) and hunt for treasure among countless numbers. People vividly liken it to "mining".

POW is actually a commonly used method in daily life to reduce information asymmetry. For example:

You must have thought of it, POW proofNot that solid. Even if you pay the cost in the early days, if you really take power, you may act randomly. This is human nature. Correspondingly, Bitcoin has designed certain anti-attack measures. For example, the accounting content must be approved by at least half of the computing power.

2. Proof of Stake (POS)

POS is the abbreviation of Proof of Stake, and participants need to prove that they have sufficient shares.

The assumption is that if you have a lot of equity in a system, you will be more credible. In each round, among the participants, the corresponding probability is given to be selected as the bookkeeper according to the proportion of their shareholdings.

POS is also a commonly used means in daily life to reduce information asymmetry. For example:

3. POI, DPOS and other methods

In addition to the above methods to solve information asymmetry, some projects combine the above methods and improve them to derive some new methods. For example:

#BTC[超话]# #digital currency# #OUyiOKEx#

② Can you make money by playing blockchain games?

Every When a new thing appears, it will always be accompanied by all kinds of false and misleading information. The emergence of blockchain games is no exception.

From a technical perspective, blockchain games can make money. But the original intention of blockchain games was not to let gamers make money.
What kind of game can be a blockchain game? There are many games in the name of blockchain in society, but many of them do not use blockchain technology at all. He just wore a vest to fool novice players. Many blockchain games say that their games can be mined, so are games that can be mined really blockchain games?
Getting back to the subject, whether it is a real blockchain game has nothing to do with mining or not. Blockchain requires mining. The mining mechanisms include POW (adopted by Bitcoin, Ethereum, etc.), POS (adopted by EOS, etc.), BFT (adopted by Xiaoyi Chain, etc.), etc. Blockchain games do not necessarily require mining. Therefore, when gamers see games that claim to be able to mine in the future, they should not just assume that they are blockchain games.
The real blockchain game includes at least two factors. The first is a blockchain wallet, and the second is a game item browser.
1. Blockchain Wallet
Blockchain gives gamers the power to truly own props. Where is this reflected? It is reflected in the blockchain wallet. After a player wins equipment in the game, the equipment will be automatically sent to the player's blockchain wallet through a smart contract (how long it takes to send depends on the smoothness of the blockchain network at that time).
Generally, a blockchain wallet is an independent APP installed on a mobile phone or computer. Not in the game interface. Therefore, a simple way to distinguish whether it is a real or fake blockchain is to see whether its wallet is an independent APP or software. If it's embedded inside the game, then it's notBlockchain games.
2. Game Item Browser
Blockchain is a public distributed ledger, and everyone can view the information on the chain. The game prop browser is specially used to check the game prop information on the chain.
So, if in a blockchain game, players cannot query information about game props on the game prop browser, then it is also a fake blockchain game.
I am a blockchain game enthusiast, welcome to follow me and communicate with each other. Didi~

③ Is it time to ban virtual currency mining and trading globally?

As far as the current blockchain market is concerned, it is already unstoppable. It is recommended that relevant national departments legalize and standardize it. That’s it. Aren’t stocks also gradually becoming regulated and legalized from irregularities? If China can take the lead in customizing blockchain exchange rules, I believe it will be beneficial to China. Of course, some foreign institutions are now also opening up and partially legalizing it, but there are no specific regulatory rules. China occupies a large part of the blockchain trading market. Moreover, many large platforms are also from China. If they cannot be legalized and are pushed outwards, it is tantamount to closing the country to the blockchain, which is detrimental to the long-term development of the country. It is better to guide, standardize and legalize. For example, establish review standards for the code of the currency issuance agency, etc., whether it has the real qualifications to be listed on the chain, whether there are asset mortgages such as BTC and other mainstream currencies as the equivalent mortgage of the currency issuance, etc. Only those with these qualifications can be listed on the exchange. Wouldn’t it be nice to standardize the management of exchanges, resolutely suppress illegal black-box operations, supervise part of the source code of exchange technical software, and also obtain tax revenue.

First of all, you shouldn’t.

Because this is the development direction of the most advanced productive forces of mankind at present. Anyone who does not embrace it will be beaten to death by the powerful ships and cannons of the future.

Secondly, it cannot be banned.

People always overestimate their own power. Decentralized blockchain networks cannot be banned, nor can decentralized blockchain mining. Human beings currently do not have the ability to ban them.

Blockchain is subverting and replacing the traditional financial system of the entire human world, and the world is changing.

Therefore, we should embrace rather than oppose and escape.

Virtual currencies, led by Bitcoin, do conflict with national sovereign legal currencies to a certain extent, but their existence has a certain rationality. Just like the Yin and Yang Bagua that Chinese people are familiar with, if there is a Yin hexagram, there must be a Yang hexagram. We will not discuss whether virtual currency should exist here. We will simply talk about the virtual currency mining industry that currently exists in power-rich areas in many countries around the world.

Before 2020, the domestic virtual currency mining industry accounted for more than 70% of the global computing power. The well-known Bitmain is located in Sichuan, Inner Mongolia and Xinjiang, which are rich in electricity.There are large mining farms in the region, but so far many places have begun to clean up and rectify the virtual currency mining industry, because their power consumption capacity is indeed very large.

Countries that currently have no policies against the virtual currency mining industry are basically concentrated in Russia, Vietnam, Southeast Asia and parts of North America. The electricity-rich areas of these countries and regions are currently gathering more and more virtual currency mining industries, so technically speaking, it represents decentralized blockchain technology. Its application is very wide, and it is not only Only limited to virtual currencies, it is technically difficult to completely ban the trading of virtual currencies, because transactions can be done as long as there is an Internet connection.

So far, the macro trend we can see is that more and more countries and regions have joined the regulatory industry for virtual currencies. This wildly growing investment market is no longer allowed to plummet and rise as before, but there are still countries like India that have completely banned foreign currency transactions. Therefore, the policies of countries and regions are different, and the results and situations are also different.

It is very difficult for a country to ban Bitcoin transactions. Three days ago, India announced a ban on Bitcoin exchanges. Today, Bitcoin exceeded 59,000, a record high.

Impossible, this is a new global reservoir, and it is beneficial to the United States. This largest economy is also a global engine. He supports it. Is it useful if you ban it? Just like if you imagine the RMB replacing the US dollar, is it possible?

The state will not support it, nor will it order a ban at this time. At present, our country hopes to have a healthy and active cooperative relationship with all countries in the world. Although most of the regional chain digital currencies are junk coins, they are cutting leeks. However, there are also different currencies such as filecoin that have certain technologies behind them.

At present, countries are also involved in the technology of ipfs

As a global matter, China cannot ban it,

But it is clear that China cannot Promoted, not supported.

The country does not open up this area because it wants to protect the wallets of its citizens.

As long as there is underlying technology to support real economy application scenarios, countries will strongly support it and severely crack down on currencies that have no application and are purely for the purpose of cutting leeks, ban them and pursue legal responsibility.

If you have the ability, hurry up and ban it, and by the way, directly bring mankind into a god-level civilization, so that I don’t have to work

In the face of new technologies and new developments, implement comprehensive What is prohibited is basically conservative thinking.

④ Will the blockchain be broken if it is not mined?

Your question requires two concepts to be clarified:

What is a blockchain?

Blockchain is a part of BitcoinAn important concept, 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 information about a Bitcoin network transaction and is used to verify the validity of the information (anti-counterfeiting) and generate the next block.

Mining, is it mining the blockchain?

To understand "mining", you must first understand the structure of the blockchain.

Block: can be understood as a blank piece of paper. Just as a piece of white paper cannot be infinitely large, blocks also have size limits. The initial size of Bitcoin was limited to 1M bytes, and a block is a file stored on a computer. A block is divided into two parts, namely "block header" and "block body". The block header is used to record some explanatory information, while the block body is used to record a list of "transactions". Note that it is a list, the real data is recorded in the client's database.

Block header: There are six fields in the block header, namely version number, hash value of the previous block, Merkel root, preset difficulty value, timestamp, and random number to be found. .

(1) Version number: used to distinguish software upgrades. Unchanged and the same over a period of time.

(2) The hash value of the previous block. It is actually the hash value of the previous block header. The formation of the chain depends on it. During the 10-minute "mining" process, this value remains unchanged and the same in all "mining machines".

(3) Default difficulty value. This value remains unchanged and the same in all "mining machines" within 10 minutes.

(4) Merkelgen. This is also a hash, which is a total hash generated recursively from each transaction in the list. Transactions are arriving at any time, so the total hash is changing at any time, and due to many problems such as network delay and transaction priority, the list recorded by each node is not necessarily the same. Therefore, the Merkel root is a changing value and is different from other nodes.

(5) Timestamp. This is also a changing value and will change in a few seconds.

(6) The random number to be found. This is the core element to obtain mining rewards, which is the random value that the "mining machine" is trying to find with all its computing power.

The mining process is to perform a series of conversions, connections and hash operations on the above six fields, and continue to try the random numbers one by one, and finally Successfully find a random number that meets the conditions: the value after hashing is smaller than the hash value of the preset difficulty value. Then, the mining is successful. The node can broadcast the block to neighboring nodes, and the neighboring nodes receive it. For this block, perform the same operation on the above six fields, verify compliance, and then forward it to other nodes. Other nodes also use the same algorithm for verification. If 51% of the nodes in the entire network are successfully verified, this Even if the block is truly "mined" successfully, each node will add this block to the end of the previous block, delete the list in the block that is the same as its own record, and repeat the above process again.

Conclusion

BlockWill the chain be broken if it is not dug? If it refers to the blockchain alone, there is definitely no problem of continuity. If it refers to mining, then if you don’t mine, the income will stop.

I hope my answer can help you~

⑤ What are the practical applications of the blockchain 1.0 era?

The development of blockchain 1.0 is closely related to digital currency Related, applications generally focus on currency transfer, exchange and payment. In a sense, blockchain technology during this period found a solution to the decentralization of currency and payments.

Currency and payment constitute the most significant applications in the blockchain 1.0 era. A series of virtual currencies represented by Bitcoin have emerged, such as Litecoin, Dogecoin, Ripple, Futurecoin, and Peercoin. Etc., thousands of digital currencies have been produced around the world, and there are about 700 types still in operation. These "alternative currencies" act as "cash" on the Internet, opening up another world in the financial field. In the application scenario of virtual currency, individuals can use a decentralized, distributed and global way to allocate and trade various resources.

The blockchain during this period has set off a huge wave in the financial field. In areas related to transfers, remittances and digital payments, blockchain technology has attracted much attention. In these fields, the traditional method requires tedious processing processes such as the account opening bank, counterparty bank, clearing organization, overseas bank (agent bank or overseas branch) through central institutions such as banks, which takes a long time and is costly. After applying blockchain technology, payment can realize end-to-end transactions, eliminating the cumbersome intermediary processing links. It is not only fast, but also has very low transaction costs. Especially in terms of cross-border payments, the blockchain-based payment system can provide users with global cross-border, real-time payment and clearing services in any currency. Cross-border payments will be completed instantly at a low cost.

The Xueshuo Innovation Blockchain Technology Workstation under Lianqiao Education Online is the only "Smart Learning Factory 2020- Xueshuo Innovation Workstation" launched by the School Planning and Construction Development Center of the Ministry of Education of China. Approved "Blockchain Technology Professional" pilot workstation. The professional position is based on providing students with diversified growth paths, promoting the reform of the training model integrating professional degree research, production, and research, and building an applied and compound talent training system.

⑥ Explain blockchain in vernacular

img src=' https://p26 . toutiaoimg.com/large/39b 70000088 e 51 B3 c 258 ' /

Recently, various ICO financial scams have been blocked in China, but this does not hinder the vigorous development of blockchain technology. After all, technology is innocent and can bring benefits to people. As for how to use it, it depends on people to operate it. If the operation is good, you can recommend development. If the operation is not good, it is like the major ICO projects. Find some knowledge for Internet celebrities to conduct so-called illegal fund-raising and financial fraud.

After talking for a long time, BlockWhat is a chain? When it comes to blockchain, the first thing that comes to mind for many people is Bitcoin. We need to solve a problem. Bitcoin is a blockchain, but blockchain is not Bitcoin. Simply put, blockchain is distributed ledger technology (DLT), not a token. It has many characteristics, such as decentralization, traceability, and difficulty in tampering.

(1) Blockchain is a distributed database

First of all, this is a decentralized distributed architecture system. Therefore, having only one central server or node is not called a blockchain. For example, if you go to Taobao to buy a mobile phone, you and the seller are strangers and have no basis for trust. If you give the money to the seller first, the seller may block you by not delivering the goods, and then your mobile phone money will be gone. If the seller ships first, do you pay? It is possible that you do not pay the seller after receiving the goods, and one party may lose money anyway. At this time, a third-party guarantee is needed to solve the trust problem. Just like Alipay now, you give money to Alipay and the seller will deliver the goods. When you receive the goods, the seller will receive the money.

The above example is a centralized system because all guarantee work is handled by Bora, a third-party payment company. Suppose one day Alipay wants to tamper with data, neither buyers nor sellers can do anything because all authority is in the hands of one company.

At this time, a distributed database is needed. This third party is no longer Alipay, but thousands of monitors. When you buy a mobile phone on Taobao, you will shout to everyone that I am going to XXX to buy a mobile phone, and I paid XXX yuan. The other person will yell like everyone else. I collected XXX’s mobile phone bill and sent it over. In this way, everyone knows about this transaction and everyone is recording this transaction, so it is useless if one or two nodes have problems or malicious behavior, because most nodes have recorded this matter.

(B) Blockchain uses encryption technology to ensure data security

There are two important points here: 1. Crypto-enabled hash function 2. Asymmetric encryption.

If you are interested in specific concepts, you can go online, but people without basic knowledge may not be able to understand it, because these two points are too professional. In fact, if you only know the use of blockchain, you don’t need to have an in-depth understanding of it. It is also a technical concept. All you need to know is that blockchain relies on these technical points to ensure data security and is not easily tampered with. Of course, many people say that these two points can guarantee 100% non-tampering. I want to be a little conservative here. As an author who works in the security industry, I have always been skeptical about 100% security, so it may be more appropriate to call it difficult to be tampered with.

I will briefly introduce these two concepts and try to explain them clearly in plain English.

1. Cryptographic Hash Function

This is mainly used to verify the integrity of information. For example, I sent a message to the company leader saying that I was sick on Friday and needed to take a day off. At this time, a hash value will be generated based on the message I sent, such as: 123456. At this point, when the leader receives this message, a hash value is also generated. Because the content of the message I sent has not changed (it has not been tampered with)(changed), so the hash value remains unchanged, still: 123456. This is if someone wants to tamper with this news and get sick on Friday and need to take a year off. At this time, the hash value will change, such as: 123489. That's when we learned our information had been tampered with.

2. Asymmetric encryption

It is mainly used for information encryption and authentication. It is actually two keys, one is called the public key and the other is called the private key. Public key encryption, private key decryption.

A public key is a key that everyone has. You own it, I own it. We can all encrypt with this key, but when decrypting it must be decrypted with my private key. If you don't have my private key, you can't decrypt it.

(C) The blockchain uses a consensus algorithm to reach consensus on new data.

The role of the consensus algorithm is to enable all nodes to reach a consensus on the new block. In other words, everyone must approve the new block.

For a centralized deployment system, this is simple, everything is controlled by the center, but in the distributed system of the blockchain, it is very complicated. For example, there are three nodes. A said he bought a mobile phone from XXX store and paid for it, B said he didn’t pay, and C said he didn’t pay enough. Then who do you listen to? What's more, blockchain technology is not as simple as three nodes, but a huge distributed system.

This is when a solution is needed. There is a corresponding problem in computer science called the "Byzantine Universal Problem" or "Byzantine Fault Tolerance" (BFT). This question was raised not because of Bitcoin, but because of a special background.

Early aircraft had three independent control systems. Why do we need three independent control systems? For example, in an emergency, there is a plane opposite. How to judge whether you should hide? If there is only one system, there is no choice, which is equivalent to centralized deployment. If the system breaks, you're dead. What if one of the two systems breaks? The good ones are said to hide, and the bad ones are said not to hide. The computer cannot judge the final result. Therefore, three independent systems are needed to support it, and the probability of two total failures is still very small. But this only takes into account injuries. What should I do if there is a malicious system? Is three enough? The answer is no, we need four systems to maintain consensus.

The use of blockchain is similar, because it is supported by a huge number of nodes, and each node is an independent system without interfering with each other. We can assume that the number of failed nodes and malicious nodes is limited, so it will not cause abnormal consistency of data.

Related questions and answers: What is blockchain? What is the use?

Blockchain is a new computing paradigm and distributed infrastructure that uses fast chain data structures, distributed node consensus algorithms, cryptography and smart contracts based on automated script code to produce, verify, store and transmit data. It can also be said that blockchain is a distributed ledger technology that can provide a decentralized trust mechanism in a non-trust environment, allowing multi-party participants to conduct secure and trust-based transactions without intermediaries.

The core advantage of blockchain technology is decentralization. By using data encryption, timestamps, distributed consensus and economic incentives, nodes do not need to trust each other.It realizes point-to-point transactions, coordination and collaboration based on decentralized credit in a distributed system, thus providing a solution to the problems of high cost, low efficiency and insecure data storage common in centralized institutions.

The fields of use of blockchain include digital currency, certificates, finance, anti-counterfeiting and traceability, privacy protection, supply chain, entertainment, etc. With the popularity of blockchain and Bitcoin, many related top domain names have been registered. It has had a relatively large impact on the domain name industry.

Related Q&A: Can you explain to me what a blockchain is in an easy-to-understand way?

Er Gazi is my friend since we were young, and we were naked in Hegou together. Later, I came to the city to study and work, and lived a life as a drifter in the north; he farmed at home and did some small business, and now he has a son and a daughter, and his life is safe. He envied my so-called "seen the world", and I envied his simple life without the pressure of mortgage loans. We have completely different and mutually enviable lives??

That day, Ga Zi came to me on WeChat and asked "District" What is a blockchain?" I was stunned for a moment, how could this idiot care about such an avant-garde word? I pretended to be calm and prepared to talk about the technical principles bit by bit, but I could see the confused expression of that idiot through the screen of my mobile phone. How to explain "what is blockchain" to people who have a little bit of Internet concepts and technical foundation? This seems to be a very thorny problem??

The village commissary interprets the core of blockchain (picture quoted from the Internet)

The core essence of blockchain is "decentralization", and almost all operating modes of blockchain operate around the concept of "decentralization". Once you understand what "decentralization" is, you can basically explain the question "what is a blockchain?" For Erga, of course, he must perform a version that he can understand.

“I said, Gazi, are you still open that canteen at the east end of the village?” Gazi answered yes. I decided to use this canteen as an example to explain the actual use of blockchain in modern business and financial models. Scenario, so that he can better understand what blockchain is.

"Are there still many villagers who take credit now? By the end of the year, some of the accounts cannot be remembered clearly, and there are still many defaulters or those who refuse to accept their accounts?" At this point, Ergazi got emotional and kept complaining. Nowadays, people's hearts are not as old as before, and business is difficult to do!

"In the past, the operation model of your canteen was a typical centralized one. You granted credit to the villagers and allowed them to take accounts on credit. All accounting was done directly through you and our villagers. You were the center of all accounting affairs." Ergazi said I understand, let me continue.

I said: "If you fail one day, then all the accounts will become dead debts? It will be difficult to get back the IOUs written in black and white, let alone those who remember the accounts verbally, but the block The decentralization of the chain can solve this problem very well. As long as the earth still exists, the blockchain will remember that every account will exist forever." Erga became more energetic after hearing this.

The essence of blockchain is “decentralization”

“The essence of blockchain is decentralization. Once someone takes credit from you, all the neighbors in the village will help you keep accounts.. Because there are many nodes for accounting, it is neither easy to make mistakes nor others can refuse to pay, so everyone reaches a consensus. If someone maliciously fails to repay the debt, the whole village will know his character, and no one will be willing to have financial dealings with him in the future??"

At this point, Gazi was obviously a little excited. It seemed that he was I was really worried about the credit issue. Seeing that Gazi was interested, I also felt a small sense of accomplishment and continued: "Of course, the above is just an analogy. In fact, the blockchain does not really allow villagers to get paper. The pen helps you keep accounts, but it is done through the Internet and computer networking. "

At this time, Gazi was a little confused and asked: "Then what others bought from me, wouldn't everyone in the village know it? Then who would buy things from me? There is really no privacy at all. And you don’t have time to keep accounts here. Last year’s accounts are said to be this year’s. What if you keep procrastinating? "

"Okay, Gazi, your question is on point. "It seems that Gazi is not stupid at all, and he is very shrewd in doing business. I continued to explain: "So, the recording and transmission of this information are all done through encryption. What you see is a picture of numbers and English. String, and each account has a timestamp to record the time of occurrence, which cannot be relied on. "

Gazi had another question: "Is it possible that the people who owe the debt have a good relationship with the villagers, and they join forces to tamper with the accounting? Then you won’t be able to explain clearly at that time??”

“Gazi, that’s all you have, haha. "I understood Gazi's concerns and continued to explain: "The mechanism of the blockchain requires more than 51% of people to agree to tamper with a bill. Everyone has a degree of closeness and distance between them, and it is impossible for everyone to favor the same person. If it were a computer, more than half of the computers on the entire network would need to recalculate. This project would be so huge that it would be almost impossible to complete??"

In this way, through the actual situation of the canteen and combined with some scenes in life, Gazi understood What is in the blockchain: decentralization, distributed accounting, consensus mechanism, encryption mechanism, timestamps, and the characteristics of being difficult to tamper with.

Ergazi was silent for a moment, seeming to be digesting the example I just gave him. I don’t know how much he can understand the example. Not long after, he sent me a voice message on WeChat: “What does blockchain mean? In the past, when I bought goods online and paid, I had to go through Jack Ma’s house. If there is a blockchain, can we directly trade with the seller? Anyway, the accounting is very safe. "

"Okay, Gazi, it's really clear at first glance. Blockchain is essentially a decentralized distributed ledger data cloud. Of course, it can be understood according to your understanding. "I'm very happy that Gazi can roughly appreciate the true charm of the blockchain. Fortunately, my words have not been in vain.

What is Bitcoin? (Picture quoted from the Internet)

"Then Bitcoin What is this thing again? What does it have to do with blockchain? "Gazi asked.

I thought about it briefly and decided to continue explaining the story of the canteen to Gazi: "In your canteen, the villagers can't keep accounts for you for free all day long, right? It's during the holidays, right?You have to carry something to visit the door. This is the reward mechanism of the blockchain. Everyone who participates in bookkeeping may receive rewards. "

"Then what are the rewards based on? There has to be a rule, right? "Gazi asked very puzzled.

I explained: "Zhang San went to your store to borrow a pack of cigarettes on credit, but Li Si knew about it first and kept an account for you first, and then others knew about it. Keep accounts, then Li Si will be able to get a small red flower as a reward ~ This small red flower is generated by the blockchain system and has no value in itself, so you do not need to pay any cost for this small red flower??"< p>“Can Bitcoin be spent as money? How is it different from the banknotes we usually spend? "Gazi continued to ask.

"Bitcoin is a digital encrypted virtual currency. In principle, it has no value itself like our banknotes. However, banknotes have a credit guarantee from the state, so they have value. Bitcoin is the value formed by consensus among Bitcoin network users, and it has tradable properties, so it can be used to carry value. "What is said here is a bit profound. I don't know if I can understand it.

I continued to explain: "Banknotes can be printed infinitely. If more are printed, inflation will occur. When we were young, popsicles worth 1 cent were very good. , now you can’t eat with 1 yuan. Of course, there are many factors that affect inflation. The number of Bitcoins is fixed, and there is no possibility of unlimited over-issuance. However, different people have different judgments on their value, and coupled with the influence of supply and demand and investor sentiment, their prices are always fluctuating. ”

What is the difference between Bitcoin price fluctuations and stocks?

“So is speculating in Bitcoin just like speculating in stocks? Can you understand it this way? "Gazi seems to know a lot.

"In fact, there are some similarities, but there are also big differences. "I continued Gazi's topic: "The price of stocks always fluctuates around the valuation of companies, and there is government supervision in the stock market. Bitcoin itself has no value. It is priced entirely based on supply and demand and player valuations. It grows wildly without any government supervision. Therefore, it may have higher risks and higher returns than stocks. "

In the end, Gazi revealed the real purpose of today. He asked me: "Can I invest in blockchain projects? "

Gazi is a typical example of those who don't go to the Three Treasures Hall for anything. Although there is a large circle of people who are involved in both blockchain and Bitcoin, in fact, what he really cares about is "blockchain project investment" Is it reliable? "When these words came out, I was extremely shocked. Now the so-called blockchain investment projects have actually reached fourth- and sixth-tier cities and small towns!

As of now, there are only three types of blockchain investments. Situation: Mining, currency speculation, so-called blockchain projects.

Mining and currency speculation are still the main lines of the blockchain (pictures quoted from the Internet)

The so-called mining means mining by purchasing mining machines, etc. Equipment, mine virtual currency, and then sell and realize it to get returns. You can install the mining machine yourself, or you can find a mining pool to host it, but the core key to making a profit is "computing power" and "power consumption""And investment in equipment. With the sharp drop in the price of virtual currencies and the increase in mining difficulty, the current mining returns of many currencies are very unsatisfactory. Mining is obviously only a very small number of investors who understand technology can play successfully. , my childhood friend Gazi obviously couldn’t play with it.

As for “coin speculation”, I have just introduced some differences between Bitcoin and stocks in the previous section. In principle, although they are both “buy low and sell high” The operation is very different. Ordinary investors cannot determine the value of a virtual currency itself. The price is determined entirely by the relationship between supply and demand, which is somewhat similar to what we often call "market makers." On the other hand, virtual currency trading The market is extremely irregular, and fraud and hacker attacks often occur, and the risk factor is much greater than investing in stocks. For the safety of my friends' funds, I am one of the ten thousand people who does not agree with the gazi to "speculate"!

"Nine 4. It is stipulated that it is illegal to issue virtual currency

In fact, in my opinion, most of the so-called investment projects in the market are essentially "illegal fund-raising" and "pyramid schemes". Some so-called blockchain investment projects have passed Various packaging and inflammatory rhetoric attract investors into the circle, and then create the illusion of profitability by building a software and hardware ecosystem of issuing new coins + mining + currency speculation, and then finally run away. Our country's laws clearly stipulate that the issuance of virtual currencies is illegal Behavior.

Illegal pyramid schemes now wear the cloak of blockchain (picture quoted from the Internet)

And how to identify some pyramid schemes under the guise of blockchain? In fact, these pyramid schemes are also so-called pyramid schemes. This is a scam, which we ordinary people often call "empty gloves". These so-called "direct sales" or "marketing" activities often have no actual products to circulate, and rely more on the development of "downline" to ensure top-level profits. Subsequently With the rise of the concept of blockchain, this MLM model has shown an intensification trend, and even deceives people under the banner of state support for new technologies.

When Gazi asked the question "Can blockchain projects be invested?" "When I saw "Wealth", I realized the seriousness of the problem. Gazi is a typical young man in a small town, and his pursuit is his wife and children. But when faced with the attraction of "wealth", people often do extraordinary things. What? Mining and currency speculation are not suitable for him at all, let alone some blockchain investment projects that are most likely to be "illegal financing" or "illegal pyramid schemes"!

I quickly called Gazi and said my sincere words Conducted the above analysis??

⑦ What does blockchain mining mean?

"Mining", as the name suggests, is an action that can appear in our minds, which is to use a shovel to We dug in the soil, but now we use computers instead of shovels. Instead of digging in the soil, we dig in a data pool. We no longer dig for physical objects such as gold and coal, but compete for bookkeeping. Rights. 1. Mining is the process of confirming transactions in the Bitcoin system over a period of time and recording the formation of new blocks on the blockchain. These miners are called miners. 2. Mining is the process of accounting, and miners are Bookkeeper, the blockchain is the general ledger. 3. The accounting rights of the Bitcoin system are decentralizedized, that is, every miner has accounting rights. Miners who successfully seize the accounting rights will receive new Bitcoin rewards from the system. Mining is the process of producing Bitcoins.

1. What does mining mean?

Ancient mining can be traced back to the selection of stone materials in the Stone Age. Later, with the rise of the metallurgical industry, mining and mineral processing technology gradually developed. This article introduces the aspects of open-pit mining, underground mining, tunnel support, rock crushing, tunnel ventilation, lighting, drainage, lifting and mineral processing in ancient China.

Open-pit mining There are many surface outcrops, slopes or residual deposits of various metal veins or ore bodies. Therefore, open-pit mining became an important mining method in ancient times. Open-pit mining can be divided into excavation method and soil reclamation method.

2. Mining is the name for accumulated income from activities in Bitcoin.

Mining was brought about by the recent popularity of Bitcoin. Bitcoin is a virtual currency that can be exchanged for real currency. One of the ways to obtain Bitcoins on the Internet is to participate in related activities every day. These activities, like mining in online games, require slowly accumulating wealth in exchange for Bitcoins.

⑧ What is blockchain mining? How is blockchain mining?

What is blockchain mining? How is blockchain mining< br />Before the rise of blockchain, miners specifically referred to workers digging coal mines. The collective impression was that they were covered in coal dust and were men with dark skin except for their clothes. After the birth of the blockchain, miner is no longer just the abbreviation of coal miner, but has a new meaning: a person engaged in virtual currency mining.
For those who have not participated in mining, it may be difficult to understand blockchain mining, so today we will start with the most basic question: What is blockchain mining? How to mine blockchain?
What is blockchain mining?
There are two types of mining in the new era, the first is to mine Bitcoin. After each transaction occurs, it is not completed. The transaction data must be written into the database before it is established and the other party can actually receive the money. First, all transaction data will be sent to the miners, who are responsible for writing these transactions into the blockchain and completing mining to obtain profits.
The second type is to dig up copycats. Various "altcoins" such as Zcoin, Monero, Ethereum, Litecoin, and BitShares. After assembling a mining machine, connect to the designated mining pool and start computing at full load according to a specific algorithm. After completing one calculation cycle, you can obtain "one" virtual currency. Then put "this" currency on the online trading platform and cash out.

How to mine blockchain?
In the beginning, Bitcoin could be mined using a computer CPU. The founder of Bitcoin, Satoshi Nakamoto, used his computer CPU to mine it. The world’s first genesis block. However, the era of CPU mining has long passed, and now Bitcoin mining is the era of ASIC mining and large-scale cluster mining.
If you want to become a miner, it is actually relatively simple. Buy a dedicated mining equipment., you can start mining. Mining does not require hands-on work. The computer actually performs specific operations. For miners, it only needs to ensure the power supply of the mining machine and the network connection.
Can blockchain mining still make money?
In the beginning, some people did get rich through blockchain mining, but as the number of miners increased, there was also great competition among miners. , profit margins are being compressed smaller and smaller. In addition, a machine that mines Bitcoin costs tens of thousands of dollars, and cannot dig out a single coin in a year. The input cost is high and the output is low. If the market conditions are unfavorable again, miners will Basically losing money.

Therefore, in addition to mining, more and more investors choose to invest in foreign exchange to make money. Unlike mining, the investment cost of foreign exchange is extremely low. For example, Juhui ggfx can be traded with a minimum of 8 US dollars. With long and short two-way operations, investors can make profits regardless of whether it is an uptrend or a downtrend. It is also very convenient for people who are busy and want to invest and make money. If you download Juhui ggfx’s MT4 trading software to your mobile phone, you can learn about the latest market conditions and participate in transactions through your mobile phone at any time, and complete orders as quickly as seconds. It is simple and fast. , the efficiency of making money is extremely high, so in addition to mining, this is also a good way to get rich.
Mining is not an easy task. Mining consumes a lot of resources because the calculation difficulty of generating virtual currency is very high and it is constantly changing. After every 2016 data blocks are generated globally, mining virtual currency The difficulty of the currency will increase once, so ordinary people must consider all aspects before joining the ranks of miners.

⑨ What does blockchain mining mean?

In 2009, Satoshi Nakamoto invented Bitcoin and set a limit of only 21 million Bitcoins to be added to the Bitcoin network. , by participating in the production of blocks and providing proof of work (PoW), you can obtain rewards from the Bitcoin network. This process is mining.

The concept of "mining" is taken from the existing concepts in our real economic life, such as gold mining, silver mining, etc. Because minerals are valuable, people are driven to work hard. dig.

Another important point of Bitcoin mining is that the miners participating in mining recognize the value of Bitcoin, and there are people in the market who are willing to spend money on the Bitcoins they mine. So, Bitcoin mining makes sense.

(9) Can the blockchain be mined? Extended reading

Bitcoin Currency characteristics

1. Decentralization

Bitcoin is the first distributed virtual currency. The entire network is composed of users and there is no central bank. Decentralization is the guarantee of Bitcoin’s security and freedom.

2. Circulation around the world

Bitcoin can be managed on any computer connected to the Internet. Anyone can mine, buy, sell or receive Bitcoin regardless of location.

3. Exclusive ownership

OperationControlling Bitcoin requires a private key, which can be isolated and stored on any storage medium. No one can obtain it except the user himself.

4. Low transaction fees

Bitcoins can be remitted for free, but a transaction fee of about 1 bit cent will ultimately be charged for each transaction to ensure faster transaction execution.

5. No hidden costs

As a means of payment from A to B, Bitcoin does not have cumbersome limits and procedures. You can make the payment by knowing the other party's Bitcoin address.

6. Cross-platform mining

Users can explore the computing capabilities of different hardware on many platforms.

⑩ Ethereum does not need miners after its transformation

img src=' https://p26 . toutiaoimg.com/large/tos-cn-I-qvj 2 LQ 49k 0/cc 3c Fe 23 f 56 f 4395 abed 6162 CB 724352 '/

After the merger, energy consumption will be reduced by 99.95%

According to OKLink data, the world’s most active high-liquid blockchain network Ethereum The block height of 15537393 triggered the merge mechanism, resulting in the first PoS block (height 15537394). Since then, the Ethereum consensus has officially changed from PoW to PoS mechanism, completing this "merger" upgrade. This will bring significant changes to the Ethereum network, including a 99.95% reduction in energy consumption and a 90% reduction in ETH circulation. CoinMarketCap data shows that the real-time price of Ethereum is about $1,590, and the price fell by about 1.11% in 24 hours. Since then, it has regained the US$1,600 mark, with a market value of more than US$190 billion.

The new merger mechanism bids farewell to the "mining" era of large mining machines.

Ethereum is a public blockchain platform and its cryptocurrency is Ethereum ETH. Under the traditional "proof of work" mechanism, in the past few years, a large number of "mining owners" have purchased high-performance graphics cards to mine ETH. For miners, if mining is performed on Ethereum's main network, after the merger, each network will operate entirely based on the PoS proof-of-stake mechanism. By then, traditional proof-of-work (PoW) mining will no longer be possible on Ethereum. Ethermine, the world's largest mining pool for Ethereum, announced the termination of Proof of Work (PoW) related services and will no longer follow up on Proof of Work (PoW) forks in the future.

Ethereum initially adopted the PoW (proof-of-work) proof-of-work mechanism. The "miners" of the nodes competed for packaging rights based on their own computing power and received packaging rewards. Nowadays, Ethereum relies on the PoS (proof-of-stage) equity proof mechanism and bids farewell to the era of large-scale mining machines. Holders can "mine" by staking Ethereum tokens (ETH), and the pledge threshold is 32 ETH.

Will the merger of Ethereum happen?Put a large number of traditional blockchain miners out of work?

Will the merger of Ethereum put a large number of traditional blockchain miners out of work? By Messari's estimate, the merger would force the $19 billion POW miners to find another way out. Although miners can contribute some GPU computing power to some Web3 protocols, it is difficult for these protocols to bear all the computing power. Looking at the data, the total market value of GPU mineable tokens other than ETH is only $4.1 billion, accounting for approximately 2% of the market value of ETH. ETH mining income accounts for 97% of the daily income of GPU miners, which means that most existing Ethereum miners cannot find POW mining coins with the same economic benefits on the market.

According to the analysis of Sun Yulin, a senior researcher at Ouke Cloud Chain Research Institute, the graphics card market may be affected to a certain extent. Some miners have expressed their intention to switch to Ethereum Classic (ETC) (Note: Some proof-of-work miners have expressed their intention to resist the merger and have begun to jump back to the older Ethereum blockchain version, now called Ethereum Classic) continue mining. In addition, the merger of Ethereum has also given market opportunities to the Enclosure market, and some Ethereum mining pools have therefore launched transformation plans related to Enclosure.

What impact will the Ethereum merger have on the mining machine industry chain?

What impact will the epic "merger" of Ethereum have on China's related industrial chains? In 2017, with the rise of blockchain in the world, the trend of “mining” services began to emerge. Huaqiangbei computer dealer, which has a large number of high-computing game graphics cards, uses its own resources to transform into "mining." The “mining boom” has brought huge profits to Huaqiangbei computer and graphics card dealers. However, after the "tide" receded, graphics card prices plummeted. Coupled with policy crackdowns, "miners" turned to secret operations in remote areas.

It’s not just miners who are affected, life for miner manufacturers is no longer easy either. On August 26 this year, according to the second quarter financial report released by NVIDIA, revenue from CMP-related businesses such as foundry mining chips fell by 66% year-on-year.

Related Q&A: What is virtual currency mining?

Mining of virtual currency is a process that uses computer hardware to perform mathematical calculations for the virtual currency network to confirm transactions and improve security. As a reward for their services, miners receive fees included in the transactions they confirm, as well as newly created virtual currency.