麻将和区块链,区块链棋牌是假的吗

近年来，随着区块链技术的发展，区块链棋牌游戏也开始出现，其中最著名的就是麻将棋牌游戏。但是，有关区块链棋牌游戏的真假，一直是人们关注的焦点。

首先，关于区块链棋牌游戏，区块链技术是其基础技术。区块链技术是一种分布式数据存储、点对点网络传输的技术，它可以记录每一笔交易的信息，并且把这些信息存储在多个节点上，从而形成一个安全可靠的数据库。在区块链棋牌游戏中，这样的技术可以保证游戏的公平性，确保游戏过程中的每一步都是公正的，从而确保玩家的利益。

其次，智能合约是区块链棋牌游戏的核心技术。智能合约是一种可以在区块链上运行的程序，它可以自动执行按照用户设定的条件执行的操作，它可以自动执行游戏规则，确保游戏的公平性和公正性。智能合约还可以保证游戏资金的安全，确保玩家的资金不会被滥用。

最后，去中心化是区块链棋牌游戏的另一个特点。由于区块链技术的分布式特性，所有的游戏数据都是分布式存储的，没有任何中心服务器，也就是说，游戏中没有任何单一的实体可以控制游戏的过程，确保游戏的公平性和公正性。

总之，区块链棋牌游戏是真实存在的，它的出现，可以让玩家体验到更加公平、安全的游戏体验，也可以保证玩家的资金安全。

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Ⅰ What is "Blockchain"

Blockchain is a public ledger. There is no centralized hardware or management organization. Any Everyone can automatically verify the authenticity of the ledger and easily discover whether the ledger has been tampered with by others.

In a word, the blockchain is a public ledger that can be verified by everyone.

The concept of being verifiable by everyone is crucial to blockchain.

Bitcoin uses the blockchain to record all transactions, so anyone knows the number of Bitcoins on each account.

So, as a publicly verifiable ledger, what are some use cases for blockchain?

In fact, there are many use cases that can be thought of. Blockchain is suitable for any data that can be recorded on a public ledger. Here are 4 examples:

1. Decentralized domain name server, namely domain currency. The domain name server is actually a ledger that records domain names.

2. Trustless public key encryption, such as https that discards unreliable certification authorities.

3. Ownership records, truthfully record the items and their corresponding owners.

4. Contracts and performance guarantees, the account book truthfully records the parties to the contract and saves the contract text.

But don’t forget that blockchain also has a very important component.

The ledger recorded using blockchain technology will always be updated. New data such as transactions, domain name inputs, records and contracts will be converted into hash values ​​of the same length by the hash algorithm and saved. However, hashing algorithms are not only not free but also very expensive.

Therefore, the ledger itself needs to have a recognition system to recognize the person who enters the block hash value.

In Bitcoin, this system is called mining and is rooted in the Bitcoin protocol. Bitcoin miners use a hash algorithm to convert transactions waiting for verification into hash values, and charge a certain amount of Bitcoin as a service fee.

Therefore, for non-monetary use cases, blockchain needs to find a way to bear the high cost of hashing algorithms.

I would like to remind everyone that my answer mainly focuses on the possible use cases of blockchain technology, and does not cover all aspects of blockchain, such as why hashing algorithms are so expensive. I'm sure you can find a lot of detailed information about Bitcoin and other blockchain applications online.

Supplement

Although blockchain technology has many advantages, there are still some less than ideal use cases. For example, there is no way to convert Bitcoin into any national currency; a ledger with billions of data entries would take up space and be impractical.

Bitcoin has shown the world that blockchain technology canIt is feasible in theory, and people are also trying to solve these increasingly prominent problems, such as technological transformation of Bitcoin or the introduction of a completely different blockchain technology. I think the following two methods are worth trying: one is to split the ledger according to certain standards such as the payer address, and the other is to introduce a main blockchain to verify the sub-blockchain. Blockchain technology is ever-changing and dazzling, and it’s unknown whether someone is already making such an attempt. But Bitcoin is still the world's first currency blockchain, what others call a cryptocurrency.

Whether in the technology circle or the financial circle, blockchain has become the hottest word, no one. Blockchain has core advantages such as decentralization and trustlessness, and can perfectly solve problems such as information asymmetry, high transaction costs, and trust of strangers in the development of the sharing economy, making "individual economy" possible. Based on this, blockchain technology is considered to be the core technology that has the greatest potential to trigger the fifth wave of disruptive revolution after steam engines, electricity, information and Internet technology.

In this context, a blockchain craze was born in society, and everyone praised it overwhelmingly. Dialectics tells us that everything has flaws, and only by seeing the pros and cons of things can we make rational decisions. Therefore, in this article, Xue Hongyan (Hong Yanweiyu), a senior researcher at Suning Financial Research Institute, focuses on pouring some cold water on the blockchain.

| What is Blockchain

Blockchain, English Blockchain, has a rather mysterious technological flavor in its name, and can be simply broken down into "data blocks" and "links". Each data block contains all the information exchange data of the system within a certain period of time, and is encrypted using cryptographic methods; the link means that each block has a link relationship with the next block, thus forming a blockchain.

It is generally believed that blockchain has two major characteristics: decentralization and trustlessness. A brief introduction is as follows:

Since each block contains all the information exchange data of the system within a specific period of time, Therefore, each block is equal, and the damage of a single block does not affect the security of the entire system, so the blockchain has decentralized characteristics.

Similarly, since each block contains all the information of the system, the authenticity of the information can be cross-verified. Only by breaking through more than 51% of the nodes can the information be tampered with. In a large enough blockchain system , the cost is extremely high, it can be considered that the information in the blockchain is true, so the blockchain has the characteristics of trustlessness.

Most people’s understanding of blockchain begins with Bitcoin. The relationship between the two is that blockchain is the underlying technology and concept, and Bitcoin is only the most popular application of blockchain at present. .

Maybe the above is not popular enough. Finally, let me summarize, what do you think the blockchain is? It is a disruptive new technology? NO! According to Xue Hongyan (Hong Yanweiyu), a senior researcher at Suning Financial Research Institute, blockchain is not so much a new technology as it is a new ideological concept. The information encryption and other technologies included in the blockchain have been around for a long time, and it is more of a conceptual innovation. This is also the reason why the blockchain has a huge impact. New technologies will be surpassed sooner or later, ranging from one or two years to four to five years; only innovative ideas have enough energy to affect all aspects of the economy and society.

| Blockchain is expected to change the underlying rules of the financial system

In applications in the financial field, blockchain will change the transaction process and record keeping methods, thus significantly reducing transaction costs. It has significantly improved efficiency and is considered to have a broad market environment in digital currency, cross-border payment and clearing, bill trading, securities issuance and trading, property rights transactions, customer credit reporting, anti-fraud, and anti-money laundering.

Such a good technology is naturally sought after by everyone. Like many traditional financial people, Hong Yanweiyu resisted it at first, thinking that this thing was not that great, and did not do any research specifically. Later, as the research on financial technology gradually deepened, it was discovered that blockchain was an obstacle that could not be bypassed, because whether it was robo-advisory, big data risk control or online lending, they were only technological innovations at the financial business level and risk control level. It has not penetrated the bottom layer of the financial system. What is the underlying layer of the financial system? Naturally, it is payment and settlement, transaction rules and system interaction. What the blockchain changes is precisely the underlying rules.

Therefore, throughout the world, financial institutions are the most active in researching blockchain. If nothing else, they are really afraid. After the decentralization and trustless features of the blockchain are fully utilized, what else will the intermediaries of financial institutions do? It is estimated that this is also the first feeling of many people who have a preliminary understanding of blockchain.

In this article, Hong Yanweiyu focuses on pouring cold water on this view.

| Subverting the financial system, blockchain still faces two mountains

Marxist dialectics tells us that everything has two sides. The more prominent the advantages, the more obvious the flaws. It’s just the perspective. Just different. The two major problems with blockchain subverting the financial system lie precisely in the two major advantages of decentralization and trustlessness.

First, let’s talk about decentralization. First, we need to clarify a truth. Does centralization necessarily mean low efficiency? Of course not. Within a specific scope, the concentration of resources brought about by centralization can greatly improve efficiency. This is also the reason why human beings evolve from individuals to villages to tribes and then to countries in the process of evolution. Take UnionPay as an example. UnionPay is the clearing and settlement center for the domestic banking industry. After UnionPay is established, each bank only needs to connect with UnionPay to realize transactions with all banks. If it is decentralized, without UnionPay, each bank will need to When communicating with all counterparties, which one is more efficient? Therefore, there is no need to beat centralization to death with a stick. The decentralized characteristics of blockchain are destined to only be used in certain fields.How can it disrupt everything if the domain (that is, a domain not suitable for centralization) comes into play?

Furthermore, it is a matter of trust. There is nothing wrong with detrusting itself, but the technical logic behind it is deeply flawed. Blockchain relies on universal accounting to achieve trustlessness, that is, all transaction information is retained in each block for system cross-verification to identify authenticity. Here comes the problem. Each block retains all transaction information. There is no problem on a small blockchain. However, as more and more information is added, it will inevitably lead to an explosive growth of transaction information and will also bring information. Dramatic increase in storage costs. At the same time, the greater the amount of information, the longer cross-validation takes and the lower the efficiency. Therefore, the blockchain solves the trust problem, but it brings about rising costs and declining efficiency.

Nothing in the world is perfect, and the same is true for blockchain.

As a conclusion, Hongyanweiyu wants to clarify that blockchain, as a conceptual innovation, does have great value and can also have a disruptive impact in specific fields. However, the current one-sided thinking about blockchain is problematic. Eastern wisdom tells us that "the most brilliant and the golden mean", in the face of anything, it is wisest to maintain the golden mean.

(Text/Xue Hongyan, senior researcher at Suning Financial Research Institute; WeChat public account: Hongyan Weiyu)

As early as a few years ago, the word "mining" came with Bitcoin is well known for its popularity. Many people know about Bitcoin first and then the blockchain, and they even don’t know about the blockchain yet. By definition, blockchain is a series of data blocks generated using cryptographic methods. Each data block contains information about a Bitcoin network transaction, which is used to verify the validity (anti-counterfeiting) and generation of its information. Next block.

I am not a computer technology expert. The following introduction to blockchain comes from reading and comments from expert friends and is for reference only.

If you want to use one word to explain blockchain, it is: distributed accounting.

To understand what this word means, you need to first understand that traditional accounting has a center. For example, in a bank, when you withdraw money from a bank deposit or lend money to others through the bank, the bank is the center, and all these transactions are based on the bank's credit. What if the bank cheats? Or is it more serious, is the country cheating? The Kuomintang's indiscriminate issuance of gold yuan coupons at the end of its rule in mainland China, as well as the hyperinflation in Weimar Germany and Zimbabwe, which made the currency less valuable than toilet paper, are very famous examples.

Golden Yuan Coupons

This is the problem that blockchain is aimed at. They believe that decentralized accounting is non-modifiable and non-repudiable. How to achieve decentralized accounting? The basic idea is that all users store all transaction records, making it very difficult to illegally modify the ledger through mathematical methods.Disaster. In this way, the reliability of the ledger is guaranteed.

Specifically, all users exhaustively enumerate random number variables, and the first user to obtain a specific required hash function value (Hash) will have the right to record this round of transactions and obtain the corresponding Bitcoins award. It is transmitted in the form of data blocks, and the data blocks are connected into a chain by appending at the end, so it is called a block chain.

After listening to the introduction, you may feel that this idea is interesting, but it is not as exciting or revolutionary as advertised. Your feeling is right. In fact, the basic logic of blockchain has some unavoidable problems.

For example, the current size of the complete Bitcoin public ledger has exceeded 150 G, and is rapidly increasing at a rate of tens of G per year - just to support 5 million users and 30 million transactions per year. If its processing volume is one day comparable to that of Alipay, the size of the Bitcoin ledger will increase by more than 500 terabytes per year. This is equivalent to backing up the Alipay server's storage data on all users' personal computers. Do you think this is a good idea?

For another example, in the traditional banking system, if you lose your password, it is no big deal. Just report it to the system in time, and your wealth will not disappear. But in the blockchain system, if you lose your password, it will be a huge trouble, and your currency will not be recovered. Not happy? Is it surprising?

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system

In layman’s terms, it is playing mahjong. Four people can take turns to be the banker, and each other can shoot four people. They all have their own ledger records, but if you want to modify the ledger, you must have more than 50% of the modification rights, so the cost of cheating on the ledger is very high.

In the future, blockchain will be used more in finance to combat money laundering and fraud, because all information can be traced, and in culture it can be used for copyright protection, etc.

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I have seen a lot of people’s explanations of blockchain in official terms, and some may not even be clear to the person explaining it. I will explain blockchain in vernacular below to ensure that everyone can read it. Gotta understand.

What is blockchain? Let me give an analogy. In 50 years, you can buy an electric fan from the supermarket. This electric fan will automatically mine coins for you when it is blowing. You can mine coins automatically while using the electric fan. When you use this electric fan, When the fan breaks down, you can use the mined coins to repair the electric fan. Of course, you can also use the mined coins to buy a new electric fan. Many people think wrongly! Wouldn’t the profits of merchants be less? Let me tell you about a certain brand, this oneWhen the brand's products are sold to you, the products themselves may even be sold to you at a loss. However, once the number of users becomes large and users become more sticky, they can be paid through small fees such as membership fees or service fees, or other methods. profit. Just like this, the mined coins can be purchased and repaired. Although the merchant's profit may be reduced, the merchant has gained more users and greater user stickiness. By this time, it only takes a minute for the merchant to make money.

And the electric fan you bought is equivalent to winding it up for you. What is winding up? If you put your electric fan on the street now, and 10 people come to snatch it, you have no way to prove that the ownership of this electric fan is yours. Once you put it on the chain, it is equivalent to being tied to you. Once it’s settled, you can prove it.

Therefore, the essence of blockchain is to help make people’s lives more convenient. It is equivalent to upgrading on the basis of the Internet, making it safer and more convenient. This is blockchain! It's that simple.

The security of the blockchain is reflected in its irreversibility and the data cannot be tampered with. We all know that in today's society, any data can be modified and conquered by hackers, but the data in the blockchain is impossible to change. Once generated, it cannot be modified unless all users in the blockchain work together. Agree to modify the data, but this is unlikely to happen.

At present, the blockchain is still very immature, just like the Internet bubble burst in 2000. When the bubble bursts, a truly valuable blockchain Internet will be hatched. company.

The wheel of history will not go backwards. Many people are unwilling to accept blockchain. Just like telling you that you can shop online 20 years ago, this is the same ridiculous thing. Time will eventually prove it. .

1. The main function of blockchain is to store information. Any information that needs to be saved can be written to the blockchain and read from it, so it is a database.

2. Anyone can set up a server, join the blockchain network and become a node. In the world of blockchain, there is no central node. Every node is equal and stores the entire database. You can write/read data to any node, because all nodes will eventually be synchronized to ensure that the blockchain is consistent.

3. Everyone works on the same blockchain, everyone publicly shares the current state of the blockchain, everyone agrees on the rules for new data submission and tampering with the blockchain is prohibited. It is difficult to operate in terms of computing power.

If we assume that the database is a ledger, reading and writing the database is an accounting behavior:

Anyone can verify this public ledger, but it does not existA single user can control it. Participants in the blockchain system will jointly maintain the update of the ledger: it can only be modified according to strict rules and consensus, and there is a very exquisite design behind this.

(1) Accounting, the system will find the person with the fastest and best accounting within a period of time, let this person do the accounting, and then broadcast the information on this page of the account book to everyone else on the entire network. node, which is equivalent to changing the database record; (consensus mechanism, cryptography)

(2) Verification, other valid nodes in the entire network check the correctness of the block accounting, and stamp the time Stamp to confirm that the block is legal; (timestamp, mathematics)

(3) Form a single chain, that is, compete for the next block after the previous legal block; (smart contract, encryption technology)

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(4) Storage, the account book is stored in blocks. As transactions increase, new data blocks will be appended to the existing chain to form a chain structure; (distributed structure, information technology) < /p>

(5) Backup, every participating trader is a node of the block network, and each node has a complete backup of the public account book, which is a distributed ledger.

Features

1. The blockchain has no administrator and is completely centerless. It is precisely because it cannot be managed that the blockchain cannot be controlled. Without an administrator, everyone can write data into it. In order to ensure the trustworthiness of the data: the technology of blockchain makes it impossible to tamper with the data once it is written.

2. Close to zero trust cost.

The cycle time required for Internet companies to build their credit is extremely long. For example, Taobao often takes several years to build its credit. In the blockchain, everyone trusts the code, algorithm and rules, so the cost of trust is extremely low.

3. The marginal cost of constructing and trading assets approaches zero.

If traditional assets are to be used for trading, they need to rely heavily on third parties, such as investment banks, banks, securities firms, etc., for packaging and endorsement, and the fees and thresholds are extremely high. With blockchain, these will not be a problem, and the cost is extremely low.

The value transfer attribute of the blockchain also naturally solves the payment problem, and has the genes to support global payments.

According to my current understanding

1. Blockchain is an outlet.

Everyone is talking about blockchain. Whether they have read it or not, whether they understand it or not, many people are forwarding blockchain articles in their circle of friends. The only new WeChat group is Blockchain related groups.

Investors are talking, entrepreneurs are talking, almost every major Internet company is talking about it, government departments are taking a stand, and tens of thousands of vertical media focusing on blockchain are quickly born.

If you don’t join any currency circle or chain circle, you will be completely out. Even well-known investment tycoonsZhu Xiaohu was unilaterally declared by the rising star Chen Weixing to belong to the old world.

2. Blockchain represents the story of sudden wealth.

Although ICO has been stopped by the national level, the most popular word-of-mouth about blockchain is still the increase in wealth by hundreds or thousands of times. Coins that were bought for a few cents or a few dollars are now worth dozens or hundreds of dollars. Everyone is talking about value-added stories.

There are Bitcoin and Ethereum. If you download a digital currency trading platform APP, the various currency codes composed of densely packed letters will feel like a stock exchange.

3. Blockchain is not only a technology, but also a belief at the conceptual level.

The basic layer, application layer, and a lot of blockchain knowledge seem to have a lot to do with the hot artificial intelligence.

Many people say that blockchain technology is mature, but applications have barely found an entrance. We can all shout loudly: Artificial Intelligence +, but if you shout "Blockchain +" now, it's not enough and you will be laughed at. The application scenarios are still being explored.

As for the previous Internet, it was an Internet of confidence. With the addition of blockchain, it became an Internet of value.

Such similar concepts are people’s good expectations for blockchain technology to solve the trust problem. If it is so easy to implement, blockchain can subvert finance, e-commerce, and many intermediaries. But why has the Internet not been subverted for so many years and real estate still relies on intermediaries?

4. Blockchain already has a history, so don’t think it is too new.

Just as many people claim that artificial intelligence is so new that it is a joke, its history can be traced back to the 1950s.

The blockchain is marked by the birth of Bitcoin, which was 10 years ago. There is also a still mysterious founder, Satoshi Nakamoto, who seems to have a Japanese name, and some say he is from the United States. From the Security Bureau, I think it can also be interpreted as "Chinese people are inherently smart", of course the latter is just a joke.

The reason why it has become so popular is because of the skyrocketing price of various digital currencies in 2017, which skyrocketed thousands of times in a few months and days. How could there be such an amazing speed in the past?

5. Blockchain is a knowledge system.

For me, whether it is a trend, whether it is a wealth game, or whether it is technology, we cannot ignore it or ignore it.

I started to make two columns to understand the blockchain from the perspective of characters, stories and characters. One is "Blockchain 100 People (Industry People)" and the other is "Blockchain 100 Investors". (Viewpoint)” Learn and spread at the same time.

As for related books, of course, I will accept them all as ordered. I can only be a follower of various trends and follow suit.

Max.The mistake is not how we criticize the blockchain, but when we see it has a huge bubble and the crowd is enthusiastic about it, we ignore it, and we think we are noble and stay away from it.

The only way we have left is to be willing to be students, learn, and learn again.

Literal meaning: block, chain, using a chain to connect each block.

Blockchain = distributed data storage + point-to-point transmission + consensus mechanism + encryption algorithm

What is data storage? For example, a supermarket must have a ledger to record the entry and exit of various goods and transactions. This is storage.

What is distributed storage? It is the account book of this supermarket. Every employee has a copy. Every time there is something that needs to be recorded, it will be recorded in everyone's account book in a timely manner. Distributing each ledger (storage) to countless people (places) is distributed storage. (The supermarket employees here can be understood as blocks, and the ledger is the chain)

What is point-to-point transmission? In the same supermarket, there is no yogurt at the front desk. The shopping guide reports it to his superiors, and then reports it to his superiors.... Finally, he reports it to the warehouse. The warehouse records the accounting records in the ledger, and then transfers the goods to the front desk. As for point-to-point transmission, if there is no yogurt at the front desk, the shopping guide directly tells the warehouse, and the quantity sent by the warehouse to the shopping guide is recorded in the ledger. Everyone knows how many goods the warehouse has sent to the front desk. This is point-to-point transmission. There is no intermediate link, but the accounts can be made public for everyone who holds the ledger to see.

What is consensus mechanism? The consensus mechanism mainly includes two points. In a simple summary, the minority obeys the majority and everyone is equal. Similarly, the positions in this supermarket may be high or low, but everyone’s account books are indeed the same and equal. If someone makes a false account, then this person's account must be different from other people's accounts. At this time, it depends on whose account is remembered by more people. In theory, as long as the blockchain is large enough, then there is no need to make false accounts. Limit reduction! Because of the "minority obeys the majority" mechanism, if you want to make false accounts, then the number of false accounts you need to make must be at least greater than 50% of the total! On a network, if you need to change a piece of data, you must control at least 50% of the total number of computers to succeed.

The encryption algorithm is easy to understand. That is, when you go to the warehouse to adjust goods, the system will protect your privacy very well. It will only record the time, location, and person with a certain number who went to adjust the yogurt. It couldn't be the time, place, or Zhang San went to mix the yogurt. Taken together, this is the core component of the blockchain.

Personally, I think its main function is to decentralize and protect data from being tampered with! Decentralization and data protection are actually related. A supermarket only has one ledger, and any scheduling needs to go through the person who manages the ledger. If you need to make false accounts, you only need to control the person who manages the ledger. And if that supermarket uses blockchain technology, then he will make false accounts. If so, you need to control the company that is larger than the one you own.50% of the total number of supermarket accounts is obviously controlled by so many people. As the number of holders increases, it is almost impossible.

II Where are the application scenarios of blockchain?

One of the most important reasons why blockchain is questioned is that there are no practical application scenarios, and ordinary people cannot see the possibilities. The value of existence. So in the eyes of these experts, where are the application scenarios of blockchain most likely to appear?

Shuai Chu, founder of Quantum Chain, said: The evolution of the entire blockchain technology is still in its early stages, just like the Internet era 20 years ago. At that time, we could not have imagined that applications like Uber would appear on the Internet. The development of technology has given everyone richer diversity, and possibilities are the future.

Zeng Ming, Provost of Hupan University, gave several possible answers based on the technical characteristics of blockchain:

1. Blockchain is the most important The advantage is a transparent, immutable, distributed ledger. Some areas have never been covered by the Internet, such as acceptance bills.

2. Another big advantage of blockchain, from the perspective of smart contracts, is that it is possible to form more efficient network collaboration at the point-to-point level. Such as crowdfunding.

3. In the field of innovation, blockchain will definitely be closely integrated with the development of the Internet of Things, artificial intelligence and other fields, including cloud computing, edge computing, etc.

III How to make money with blockchain

The meaning of blockchain and the answers to how to make money are as follows:
1. The meaning of blockchain: Blockchain is a process of information After confirmation by multiple parties, it is finally stored in multiple places on the storage bridge. It is a tool that can solve credit problems during transactions.
2. How to make money with blockchain:
(1) Provide blockchain technology services. Form a corporate team to specialize in the development and application of blockchain technology, and provide your technical results to companies in need for use, or develop corresponding blockchain technology based on the needs of service recipients. A simple understanding of Jimeng is to be a middleman.
(2) Use blockchain technology to issue coins. This method is that the company acts as an issuer and releases a certain number of virtual coins for others to invest, such as Bitcoin, Litecoin, and Dogecoin. At that time, if you wanted to become an issuer, in addition to having blockchain technology, you also had to apply for a series of filing documents and materials such as business qualification certificates and currency issuance qualification licenses from relevant regulatory authorities. Otherwise, if you don’t have these documents, it would be fraud. . However, successfully preparing these documents will still test the strength and capital of the company. If the funds are not strong enough, it will be difficult to sustain.
(3) Payment for blockchain knowledge. In the early days of the blockchain market, many people did not understand what blockchain was and wanted to participate, which inevitably gave rise to a payment market for blockchain knowledge. Since this year, many public accounts with the theme of blockchain have appeared, and many paid blockchain courses and small investment circles have been born.
(4) Register to receive free candies. Candy is blockIn order to attract more users to join the early use and spread, the chain project team rewards early users with tokens. Similar to the early "Didi", in order to cultivate a large number of early users, a large number of free taxi tickets were issued to users.

IV What is the blockchain project

From an academic perspective, blockchain is distributed data storage, point-to-point transmission, consensus mechanism, encryption New application models of computer technology such as algorithms. Blockchain is essentially a decentralized database.

It first appeared in 1991 and was used by a group of researchers to time-stamp digital documents. So that these documents cannot be tampered with, the blockchain technology looks like a notary.

However, this technology has not played any other role since then. It was not until 2009 that a person named Satoshi Nakamoto used blockchain technology to create the digital cryptocurrency Bitcoin.

A blockchain is a distributed ledger that is completely open to everyone. It has an interesting property: once the data is recorded in the blockchain, it is difficult to change it. So how exactly does it work? Next, let us first observe the composition of a single block.

Each block contains three important parts:

Data, hash value, and the hash value of the previous block. The data part is related to the type of blockchain. For example, the blocks in the Bitcoin blockchain store relevant transaction information, including sellers, buyers, and the number of Bitcoins traded.

Once a block is created, its hash value is uniquely determined. Changing any content in the block will cause its hash value to change significantly. Variety. That is to say, when you need to check whether a block has been tampered with, you only need to detect whether its hash value has changed. If the hash of a block changes, its content must have changed. It is no longer the same block as before!

The third element contained in the block is the hash value of the previous block. This element allows a chain to be formed between blocks. And it can make the blockchain very safe. For example: suppose we have a blockchain containing three blocks.

Ⅳ What is blockchain mining and what does it do? Detailed introduction to blockchain and virtual currency

When Bitcoin was first released, people discovered that it was decentralized and not It is controlled by any center; it is completely open, except for the encryption of transaction information, the entire system information is highly transparent, and the technology is open source; security, as long as you cannot control %51 of all nodes, you cannot modify the data arbitrarily, which makes it relatively safe ; Independence, the entire model and Bitcoin do not rely on any third party, all nodes verify and exchange data within the system without any intervention

Here we explain in detail what blockchain technology is, to put it bluntly It’s block + chain, so what is “block”? What is a "chain" again?

A block is a ledger. Transaction accounting is completed by multiple nodes distributed in different places, and each node records a complete account, so they can all participate in supervising the legality of the transaction and can also jointly testify for it< /p>

Each block contains the encrypted hash of the previous block, the corresponding timestamp, and transaction data (usually represented by a hash value calculated by the Merkle tree algorithm). This design This makes the block content difficult to tamper with. Distributed ledgers connected by blockchain technology can effectively record transactions between two parties and permanently verify the transaction.

The function of the hash function h(): convert a string of any length into a fixed-length (for example, 256 bits) output. The output is also called a hash value. This output is irreversible

It is difficult to find two different x and y such that h(x) = h(y), that is, two different inputs, There will be different output. Theoretically, two different inputs may have different outputs, but this is almost impossible. For example, if an infinite space is mapped to a finite space, there must be a many-to-one situation. The theory exists, but there are no rules. It is guaranteed that you cannot find this result through any mathematical inference. Why is it 256 bits here? Isn't it longer? Because 256 bits are secure enough.

Split the ledger into blocks. For example, a piece of paper in a book is a block. Each block records transactions within a period of time, such as 10 minutes.

We divide Each piece of paper is compared to a block. A part of content is added to each block. We call it a block header, which records the hash value of the parent block. Each block stores the hash value of the parent block. , connect all blocks smoothly to form a blockchain

Record the hash value of block 1 to the block header of block 2. In this way, the block header of each block is recorded The hash value of the parent block, each block is linked in order, this is called a blockchain. The first block has no block header and is also called the genesis block

The blockchain is a ledger. Only when transactions occur in the ledger will the money in your account increase. If you need to make a transaction, you first need an account number and password. Just like your bank card has an account number and password, others can make a transfer to you. The account password on the block ledger is the public key and private key

Lao Wang (who already has a private key and a public key) wants to transfer 10 BTC to Zhang, which requires some operations

It is proved that Lao Wang himself issued the transfer signature function Sign (Lao Wang’s private key + Transfer information: Lao Wang transferred 10 BTC to Zhang San) = signature of this special account
The verification is that Lao Wang himself issued the transfer verification function Verify (Lao Wang’s address + transfer details: Lao Wang transfers 10 BTC to Zhang San + signature of this transfer) = true
Once the transfer is recorded in the block, no one can change it. Zhang San adds 10 BTC, and Lao Wang The corresponding reduction is 10 BTC. The entire operation is automatic. For example, your wallet app will help you do this. The app knows your private key, you tell the wallet the transaction content, and the wallet signature is announced to the entire network, waiting for others. to verify this transaction

Centralized accounting will be more efficient. Banks, governments, or Alipay can help you keep accounts, which are very reliable because they cannot touch your money unless they have your personal information. Key

There are some shortcomings in centralized accounting

In decentralization, everyone can keep accounts, and everyone can keep a complete ledger. Anyone can download open source programs, participate in Bitcoin's p2p network, monitor transactions sent from all over the world, become an accounting node, and participate in accounting. Suppose Xiaoyi releases a transaction and broadcasts it to the entire network, and accounting node A listens. When this transaction arrives, A verifies that the transaction bit is true and puts it into the transaction pool to continue to spread to other nodes. Because it is spread through the network, the transaction pools of different accounting nodes are not necessarily the same at the same time. Every 10 minutes, from all accounting nodes Among the nodes, select one according to a certain method. After verifying that the transaction of this node is true, then compare the transaction records in the transaction pool of this selected node with the transaction records in the transaction pool of your own (A) node. The comparison is completed. After that, the transactions recorded by the selected accounting nodes will be deleted from the transaction pool, and the other accounting nodes will continue to record and wait for the next selection. There is a cycle every 10 minutes. During this 10 minutes, all accounting nodes will record accounts normally. , 10 minutes later, a node will be selected to use the transactions in its transaction pool as a new block. This block comes from the transaction pool of an accounting node I randomly selected among all the accounting nodes, and the cycle continues

A transaction is not completed once it is recorded. Only when the transaction becomes a certain block, the transaction is truly completed. This is a complete accounting process of decentralization. Your transaction will not be recorded immediately because the p2p network propagation takes time. If the node of the selected block has not received your transaction, the transaction will be not done. A block is generated every 10 minutes, but not all transactions within 10 minutes can be recorded. 10 minutes is just an average value

Due to the characteristics of decentralized accounting, accounting nodes with accounting rights will receive a 50BTC reward every ten minutes, which is about the same for every 210,000 blocks. In 4 years, the reward is halved. Bitcoin has been halved twice since its issuance. Then a new block is generated every ten minutes. The reward for this accounting node is 10.5 BTC. If it is halved every 4 years, the total number of BTC can be calculated. The amount is approximately 21 million, and it is expected to be mined in 2040, recording the reward for a block.Rewards are also the only way to issue Bitcoin. After BTC is mined, the only income the accounting nodes can obtain is the transaction fee

Accounting nodes compete for accounting rights through questions,

Find a certain random number that makes the equation invalid
SHA256 hash function (random number + parent block hash value + transaction in the transaction pool) a certain specified value)
Starting from 0 There is no other solution except traversing random numbers and trying your luck. The process of solving the problem is also called mining, so the accounting node that solves this problem is also called a miner. The faster you traverse the random numbers, the more you get the accounting right. The greater the possibility, this traversal speed is called computing power by mine bosses. In order to obtain this computing power, mine bosses will buy more mining machines with higher computing power

Whoever solves it correctly first will get the accounting rights. Accounting node A is the first to find the solution, which is announced to the entire network. After other nodes verify that it is correct, node A obtains the block, gains 12.5 BTC, and restarts a new round of calculation after the new block. This method is called (POW) allocating accounting rights

It usually takes about 10 minutes to solve this random number. 10 is not absolute, because the process of solving this problem is a process of luck. In response to changes in computing power in the future, Bitcoin will increase or decrease the difficulty every 2016 blocks, about two weeks, so that the average block generation time is ten minutes

Each block contains The encrypted hash of the previous block, the corresponding timestamp, and the transaction data (usually represented by a hash value calculated by the Merkle tree algorithm) are included. This design makes the block content difficult to tamper with. Distributed ledgers connected by blockchain technology can effectively record transactions between two parties and permanently verify the transaction.

Different from traditional stored data, each node of the blockchain stores complete data according to the block chain structure. Each node of the blockchain is independent and has equal status, relying on The consensus mechanism ensures storage consistency, while traditional distributed storage generally synchronizes data to other backup nodes through a central node.

Mahjong is a traditional Chinese blockchain project. A group of four miners work together. The miner who first collides with the correct hash value of 13 numbers can obtain the accounting rights and be rewarded.

Many people say that blockchain is a scam and Bitcoin is a scam. This may be a scam, but this technology has been widely recognized and applied. The cryptography knowledge involved in blockchain can only be used by ordinary people. Even if you don’t understand it, the most important thing is to look at the problem from a relatively rational perspective. Don’t let the wind be the rain.

There is something incredible about this technology. It maintains absolute order without a center or supervision. This only requires trust established by everyone's consensus., Bitcoin has created this consensus, and everyone is fair and equal in the world of blockchain.

Is the VI T6 Hash platform highly reliable?

The current hash game can be said to be the world’s first blockchain game with virtual attributes. The Greek value greatly improves the security of data. I have played the Pintai hash game you mentioned, and it is indeed very attractive. You can give it a try. You can play it directly by entering Ν3hαsh.соm here.
After experiencing it, I feel that they are really a platform that operates with integrity and is really open and transparent.
1. Practitioners in the computer industry should be very familiar with the word hash. Hashing can map data from one dimension to another. Hash functions are usually used to achieve this mapping. Usually, the industry uses y = hash(x) to represent it. This hash function implements operations on x to calculate a hash value y. Mahjong in the blockchain is a traditional Chinese blockchain project. A group of four miners work together. The miner who first collides with the correct hash value of 13 numbers can obtain the accounting rights and be rewarded. Many people say that blockchain is a scam and Bitcoin is a scam. This may be a scam, but this technology has been widely recognized and applied. Most people don’t know much about the cryptography knowledge involved in blockchain.
2. Pour some cold water on the hot blockchain. Whether in the technology or financial circles, blockchain has become the hottest buzzword. Blockchain has core advantages such as decentralization and trustlessness, which can perfectly solve the problems of information asymmetry, high transaction costs, and trust of strangers in the development process of the sharing economy, making "the individual economy does not know whether it is a scam, but it is all there anyway." I was bragging and always wanted to buy with them. They had a great rise in the beginning, but suddenly fell sharply in the past few days. They must have tricked many people. Anyway, I didn’t buy it.
3. Hash means to introduce a random number of Input data, encrypt it, and then obtain a fixed output data, which is called hash. Liked and disliked < What is your evaluation of this answer? Comments Close other similar questions 2022-09-13 T6 hash this Is the platform highly reliable? 2022-09-13 How is the T6 Hash platform? If the hash value of a block changes, then its content must have changed. It is no longer the previous block. ! The third element contained in the block is the hash value of the previous block. This element allows a chain to be formed between blocks. And it can make the blockchain very secure. For example:.
Fourth, it can be changed. You can tell by looking at the two sets of results that they are obviously different. What I can tell you is that this settlement does not use your original hash value as the result, but their system control can set Settlement with a certain result hash value. This is obviously a scam, don’t be fooled. The hash result is something they can fully control. It’s unfair that on the blockchain, code replaces text and becomes a new form of presentation of the contract, and even Automatic execution is an outstanding contribution of blockchain coders. And as the codeThe "raging" of contracts, combined with future artificial intelligence, perhaps the future leader of the blockchain world may become Homo sapiens, and the code will become ".
5. And rely on input data to create hash values. According to The length of the final hash value is different, and there are different hash algorithms. The cryptographic hash algorithm used in the blockchain has the following characteristics: the ability to quickly create hash values ​​for any type of data deterministic pseudo-random singletons The issuance and transaction of function-anti-collision USDT uses the Omni (formerly Mastercoin) protocol, and Omni currency can be said to be the first 2.0 currency on the market based on the Bitcoin blockchain. Therefore, the transaction confirmation and other parameters of USDT are Consistent with Bitcoin. According to Craig Sellars, CTO and co-founder of Tether, users can pass.

Ⅶ What exactly is blockchain? Blockchain is virtual currency

Me Let me tell you about blockchain in a simple way. There is no need to use advanced technical terms, because it is too difficult to understand. Let me give you an analogy to make sure you understand it at a glance.

Mahjong in China can be understood as a blockchain. If the four of you ABCD are going to play mahjong, who greeted you? A greeted you, then A is the initiator of this block. A is responsible for finding the mahjong parlor. Organizer A can Invite BCD, or B invites C, or C invites D, it doesn't matter.

abcd gathered in a mahjong parlor and started playing mahjong. The process of shuffling the cards in the mahjong machine, abcd drawing the cards, and playing the cards is understandable. It becomes a mining stage similar to Bitcoin in the blockchain.

Everyone has different cards, which are equivalent to the algorithm in the block, but there is one goal, and they are all for Among them, A messed up, bcd said nothing, and everyone knew that A won at a glance. This is called the consensus mechanism in the blockchain.

A messed up, and after A knocked down the mahjong , bcd all know how A got fooled, and keep it in mind. If A wins 10 yuan, AbCD all know that A wins 10 yuan. This is called distributed accounting in the blockchain. < /p>

Everyone who plays mahjong knows what mahjong arrangement can be used, and everyone also knows what cards can be doubled, so this can be understood as a smart contract in the blockchain.

Everyone knows the final winning card of A after A is knocked down. No one can tamper with this result because everyone is watching it. This can be understood as the non-tamperability of the blockchain.

< p> After A announced that he was cheating, everyone did not go to another person, such as E, F, G... to verify. The same happened after B won... No regulatory agency can control them, it is all them Take care of yourself, this is decentralization in the blockchain.

By analogy, the four buddies abcd played mahjong for a day, and abcd recorded every win or loss, regardless of them in what way, whether it is brain memory, video recording, or notes, the more they type, the more they can reflect the immutability, decentralization, distributed accounting, and consensus of the blockchain...

At this point, you basically understand what blockchain is. Isn’t it very simple?

The second question is that blockchain is not a virtual currency. Virtual currency is just a part of blockchain technology.

Many people think that virtual currency is the blockchain and Bitcoin is the blockchain. This is actually wrong. It’s just that the fame of Bitcoin has brought blockchain into the public eye.

Satoshi Nakamoto invented Bitcoin using blockchain technology, and he defined Bitcoin as a peer-to-peer electronic cash system. The term "electronic cash" indicates that what Satoshi Nakamoto wanted to invent was not Not just a payment system, but a monetary system with an independent monetary philosophy.

Today’s hotly-hyped virtual currencies, as well as mining, are resisted by many departments and countries. The fundamental purpose is not to waste resources, electricity, etc., but because people with blockchain technology Virtual currency has subverted traditional finance and can easily cause the collapse of traditional finance. I have talked about this in my previous Q&A, so I won’t go into details here.

It can be said that Satoshi Nakamoto and the Bitcoin he invented are the pioneers of the blockchain. It was Satoshi Nakamoto who brought blockchain technology into everyone’s field of vision. Blockchain technology is still widely used in finance, medical care, service industry, big data security...

Let’s talk about this big data. As we all know, the recent Didi incident due to big data security The impact is still quite large. If decentralization in blockchain technology is used, personal data can be obtained and saved through the blockchain. How can there be data leakage? In today's society, with the advancement of science and technology, as long as you use your mobile phone to connect to the Internet, you have no data security. Your personal information has already been leaked completely, so blockchain technology is inevitable for social progress. trend.

Let’s talk about blockchain. I hope you can learn something from it. You can also pay more attention to blockchain technology and improve your cognitive level. (Personally coded by hand)

Blockchain is a distributed storage solution.

Virtual currency is a supporting reward mechanism to promote this plan.

The blockchain is decentralized, so there will be no IDC computer room or centralized data center. The storage of all data is theoretically fragmented. This requires a reward to attract others to join the project, and this reward is virtual currency.

In theory, blockchain can form a dynamically stable and decentralized cloud-like computing resource provision channel.

Bitcoin is the earliest blockchain application, while Ethereum is the second generation blockchain that canTo support on-chain applications, the hardware resources required by these applications are provided by miners, so miners must be paid a certain fee. The common currency used for this fee is Ether.

The biggest attraction of blockchain is decentralization. In theory, applications on the chain will not disappear. No cloud containers will be lost, no data centers will be blown away by typhoons, and there will be no An organization can decide whether it stays or goes.

However, the reality is that there are still a lot of problems in on-chain applications, such as high latency, imperfect infrastructure, the reward-based miner attraction mechanism has not accelerated the on-chain speed as expected, and the virtual currency has prospered alone. Centralization returns to centralized exchanges, and other issues. There is also the inflow of black money, which is making this emerging industry full of uncertainty.

But from a technical perspective, blockchain technology is indeed the next generation of computer application technology.

Blockchain is a technology, a distributed and decentralized technology that can be applied to storage. Blockchain is not a virtual currency. Virtual currency is just a digital currency made using blockchain technology. Now, for example, the relationship between blockchain and digital currency is like, for example, if you build a dapp application mall on a certain chain, then you A token related to this mall can be issued.

The real connection between blockchain and virtual currency

What we are pursuing now is the application of blockchain technology. You develop a public chain and build many shopping malls, finance, defi, real estate, and tourism on this public chain. Such a dapp, this public chain has value, and then the tokens issued by this public chain have value, just like the current Ethereum, pi network

There are too many on the Internet now The so-called "blockchain digital currency", when we look at virtual currency, we look at what problems the public chain it is on can solve and what value it has, rather than blindly hype it. I think blockchain is the underlying technology. I think we only know The surface of blockchain.

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Author: Leng Leng's point of view

Block Chain is a technology, and virtual currencies like Bitcoin are products of applications on the blockchain. There are many video explanations on my homepage.

Blockchain is a technology, and virtual currency is a product produced by applying blockchain technology.

Bitcoin brought out blockchain technology, making people who don’t know why think that Bitcoin is equivalent to blockchain.

What is blockchain?

Every computer (mobile phone) is a block, which is connected through the Internet to form a blockchain.

Different from the traditional Internet, for example, when playing Douyin, each of us requests the Douyin server, and the Douyin server gives us the video. Everyone who plays Douyin cannot do without the Douyin server, and the Douyin server is our center. BlockchainThere is no center. Everyone (each block) is a server. When a block generates new content, everyone will be notified and everyone will save the new content to their own servers. The content stored in each block is Similarly, if a new user (block) joins, it needs to synchronize the data on the blockchain and update the data to its own server first.

The advantage of blockchain is that it can ensure data security and cannot change the data. It is useless if you change one or two blocks of data. Once the blockchain data is synchronized, it will become the correct value. The traditional central server will not work. Hackers invaded the Douyin server, and all users suffered.

Disadvantages of blockchain are low efficiency. Blockchain requires synchronization of blockchain data in each block. New changes on the blockchain require simultaneous updates from users on the entire blockchain network, which is inefficient.

Blockchain is a computer model of distributed data storage, point-to-point transmission, and consensus mechanism. In simple terms, blockchain is a decentralized database. How to use this technology? Is the value reflected? Under the consensus mechanism, a technology such as blockchain is formed to give a specific token, which is BTC

Blockchain is a new Internet application technology that uses distributed storage, passwords The application of emerging technologies such as science, smart contracts, and consensus algorithms can be said to be a new data transmission method that innovates existing Internet protocols. At present, blockchain technology is constantly iterating

1. Blockchain 1.0, symbolizing the birth of Bitcoin; only with Bitcoin can the development of blockchain technology officially occur

2 , Blockchain 2.0, Ethereum decentralized application platform, Ethereum introduces the application of smart contracts, which represents the beginning of a new era of blockchain technology; now everyone can create projects on Ethereum, and in recent years Many good projects have been launched

3. Blockchain 3.0, DeFi opens the era of decentralized finance. DeFi projects use smart contract technology to realize various functions of traditional financial institutions, such as derivatives, Lending, trading, financial management, asset management, and insurance, etc. There are currently mixed reviews for DEFI, which will take time to verify

Although the blockchain originated from Bitcoin, just like the first computer when the Internet first appeared, Bitcoin is mainly used by miners. Mining rewards

Blockchain is a decentralized accounting method. Virtual currency is the product of blockchain.

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

Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. 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 its information (anti-counterfeiting) and generate the next block.
Narrow senseGenerally speaking, blockchain is a chained data structure that combines data blocks in a sequential manner in chronological order, and is a cryptographically guaranteed distributed ledger that cannot be tampered with or forged. 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.