简单了解区块链,区块链简单易懂

区块链是一种由许多节点组成的分布式数据库，它可以记录交易、资产等信息，并能够在不受中心机构控制的情况下安全地记录、存储和跟踪数据。本文将介绍区块链的三个关键词：去中心化、共识机制和智能合约。

去中心化：去中心化是区块链的核心概念。它指的是没有中心控制机构，每个节点都是平等的。在区块链系统中，每个节点都可以查看、验证和存储数据，而没有任何一个节点可以控制或改变数据。这样的系统可以有效地防止数据泄露、篡改和欺诈。

共识机制：共识机制是一种技术，它可以让网络中的所有节点达成一致，以确保数据的安全性和一致性。在区块链系统中，共识机制可以验证交易、确保数据安全、确保数据的一致性和完整性。常见的共识机制有工作量证明、权益证明和拜占庭容错算法等。

智能合约：智能合约是一种计算机程序，它可以在区块链网络上执行，用于实现自动执行合同的功能。智能合约可以让双方参与者在没有中央机构的情况下安全地执行交易，而无需受到第三方的控制。它可以让双方参与者在可信的环境中实现自动执行合同，从而更快地实现交易。

以上就是关于区块链的三个关键词：去中心化、共识机制和智能合约的介绍。区块链技术的出现，不仅可以让双方参与者在没有中央机构的情况下安全地执行交易，而且还可以让数据在网络中安全地存储和传播，从而改变了传统金融系统的运行方式。

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A. What is the popular explanation of blockchain

The popular explanation of blockchain is a chain composed of blocks one after another. Each block stores a certain amount of information, and they are connected into a chain in the order in which they were generated.
This chain is saved in all servers. As long as one server in the entire system can work, the entire blockchain is safe. These servers are called nodes in the blockchain system, and they provide storage space and computing power support for the entire blockchain system. If you want to modify the information in the blockchain, you must obtain the consent of more than half of the nodes and modify the information in all nodes. These nodes are usually in the hands of different subjects, so it is extremely difficult to tamper with the information in the blockchain. thing. Compared with traditional networks, blockchain has two core characteristics: first, data is difficult to tamper with, and second, it is decentralized. Based on these two characteristics, the information recorded in the blockchain is more authentic and reliable, and can help solve the problem of people's mutual distrust.

B. An easy-to-understand explanation of blockchain

The popular explanation of blockchain technology is as follows:

To put it simply: blockchain is the use of a package of Some network technologies have formed a new generation of network systems. This network system has a new structure, a new mechanism, and unprecedented new value. Five major technologies or innovations are specifically used: encryption technology, P2P network technology, distributed storage technology, consensus mechanism, and smart contracts.

Essentially: it is a shared database, and the data or information stored in it is "unforgeable", "full-process traces", "traceable", "open and transparent" and "collectively maintained" ” and other characteristics. Based on these characteristics, blockchain technology has laid a solid foundation for "trust-based sales" and created a reliable "cooperation" mechanism. Yunchun has broad application prospects.

2. Openness.

In addition to the encryption of private information of all parties to the transaction, the blockchain data is open to everyone and provides a flexible script code system. The entire system information is highly transparent and within the rules specified by the system. Nodes cannot deceive each other.

3. Autonomy.

Consensus technology, smart contracts.

C. What is the most easy-to-understand explanation of blockchain

Blockchain has become very popular in recent years, with attention and exposure continuing to rise. Many domestic giants have launched double-digit projects. They embrace blockchain as a great disruptive innovation in the Internet era, and swarm around to study how to turn blockchain into a tool for them to seize business opportunities.

So, what exactly is blockchain technology? You can recognize each Chinese character individually, but you don't know what they mean when put together. For the blockchain, which everyone thinks is extremely mysterious, now there is a most understandable explanation.

What is blockchain? Let’s first use the love story that everyone loves to talk about as a simple example.

Build a simple blockchain model, then the following situations will occur when falling in love in this blockchain model.

In the future, all the men and women of the right age will fall in love and the whole process of commitment to get married will be agreed upon by all other men and women of the right age, and all the stories that happen between two people together will form a block.

All other men and women are the chain. If a third party intervenes or you violate your partner, others can see it, and you will never find a partner in the future.

To be precise, the blockchain is a "full center" system, that is, every node on the chain is the center.

Men and women in trial marriage fall in love, show off their love on friends, promise to love each other for a lifetime and be known by all other marriageable men and women is the application of blockchain. If one day one party breaks their promise, don't think that deleting the photos will be useful, because every piece of it has been recorded by all marriageable men and women.

It cannot be deleted or changed, this is blockchain technology.

If this technology is applied to the business field, its "purifying" effect on the business environment will be imaginable, which explains why blockchain technology is so popular.

The Internet has entered the ecological era, and its applications have penetrated into many fields such as financial services, Internet of Things, supply chain management, digital asset transactions, and e-commerce. The emergence of the blockchain has transformed the development of the Internet from the information Internet to the value Internet and the order Internet. Its "distributed business" model with the sharing economy and value link as the main features will give birth to a large number of new cross-institutional innovative cooperation scenarios and build The creation of a new industrial ecosystem with blockchain technology as the virtual center will have a disruptive impact on economic and social governance, industrial transformation and innovation.

On this basis, the Caoxin, Caoshang, Caodao and Caoai projects built by Caoliu Commune based on blockchain technology are composed of founding nodes, institutional nodes, partner nodes, and first-level nodes. , second-level and below nodes, and ordinary members constitute a new Internet ecosystem, outlining an environment that is fully in line with today's national policies and allows users to have the opportunity to participate in blockchain technology. Users can obtain grass coins by participating in community work. Users The obtained grass coins can be exchanged for Caoxin CT or traded on the trading platform to realize the circulation and appreciation of grass coins.

This is the first blockchain technology to be applied to the real industry ecosystem. It is also an example of financial thinking with Chinese characteristics that is deeply adapted to the commercial and financial environment based on China’s national conditions and uses blockchain technology to transform the traditional commercial and financial system. A historic innovation in decentralized reconstruction.

D. The most popular explanation of blockchain is told below

1. Blockchain refers to the collective maintenance of a reliable database through decentralization and trustlessness. Technical solutions. There is no central ledger in the blockchain. Everyone has the opportunity to participate in accounting. Everyone is the center, and everyone in the system has a ledger.

2. DistrictBlockchain is just a technology. Different people will use it to do different things. Now many smart people are perfecting and optimizing it so that blockchain can be applied in more fields and play a greater role. . At the same time, there are also some people who, taking advantage of people's lack of understanding of blockchain, advocate various concepts and issue various digital tokens to make money without any new ideas. The beauty of open protocols is that those who discover and embrace them early on can harness them in shocking new ways.

E. What is blockchain? An easy-to-understand explanation and how to explain it

Blockchain is actually equivalent to a disintermediated database, which is composed of a series of data blocks. Each of its data blocks contains information about a Bitcoin network transaction, which is used to verify the validity of the information and generate the next block.

In a narrow sense, blockchain is a chain data structure that combines data blocks in a sequential manner in chronological order, and is cryptographically guaranteed to be inextricable. Tamper-proof and unforgeable distributed ledger.

In a broad sense, blockchain is actually a distributed infrastructure and computing method, which is used to ensure the security of data transmission and access.

Blockchain classification

Public

Public Block Chains (Public Block Chains) refer to: any individual or Any group can send transactions, and the transactions can be effectively confirmed by the blockchain, and anyone can participate in its consensus process. The public blockchain is the earliest blockchain and the most widely used blockchain. The virtual digital currencies of all major bitcoins series are based on the public blockchain. There is only one blockchain corresponding to this currency in the world. .

Consortium

Industry Block Chains (Consortium Block Chains): Multiple pre-selected nodes are designated within a certain group as bookkeepers, and each block is generated by all pre-selected nodes. Nodes jointly decide (pre-selected nodes participate in the consensus process), other access nodes can participate in transactions, but do not participate in the accounting process (it is essentially still managed accounting, but becomes distributed accounting, how many pre-selected nodes, how to decide each The bookkeeper of the block becomes the main risk point of the blockchain), and anyone else can conduct limited queries through the open API of the blockchain.

Private

Private Block Chains: Only use the general ledger technology of the blockchain for accounting. It can be a company or an individual, and it can be used exclusively. The write permission of the blockchain is not much different from other distributed storage solutions. (Dec2015) Conservative giants (traditional finance) all want to experiment with private blockchains, while public chain applications such as Bitcoin have been industrialized, and private chain application products are still being explored.

F. How to explain blockchain in a popular way

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

(6) The most popular introduction to blockchain and extended reading:

Blockchain application fields

1. Financial field

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

2. Internet of Things and Logistics Fields

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

3. Public welfare field

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

4. Insurance field

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

G. Popular explanation of blockchain technology

Blockchain is computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. new application models. Blockchain is an important concept of Bitcoin, which is essentially a decentralized database. At the same time, as the underlying technology of Bitcoin, it is a series of data blocks generated by cryptographic technology. Each data block contains a batch of Bitcoin network transaction information, which is used to verify the validity of its information (anti-counterfeiting) and generate the next data block.
First of all, it is a special distributed database that is essentially readable and writable. The unit then entered into the database is a "block", which is decentralized.
It doesn’t seem to be easy to understand when explained in this way, so let’s give a simple example.

When we shop on Taobao, because neither the buyer nor the seller knows each other's credit, we need to introduce a third-party platform - Alipay. Alipay is a trustworthy platform. The buyer first gives money to Alipay. After the seller delivers the goods, the buyer receives the money and notifies Alipay, who then lends the money to the seller. In this way, there is no need to worry about credit issues in the transaction.

H. A simple and easy-to-understand introduction to what blockchain is

Blockchain is a method of sequentially linking data blocks in chronological orderA chain data structure composed of connections, and 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.
The underlying technologies of digital cryptocurrencies such as Bitcoin, Litecoin, Ethereum, and Ethereum are all blockchains, and they are just an application of blockchain.

I. What is the popular explanation of blockchain

Blockchain is the underlying technology of Bitcoin. It is like a database ledger that records all transaction records. This technology has gradually attracted the attention of the banking and financial industries because of its safety and convenience.

The popular explanation of blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm.

The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system.