区块链讲解ppt,区块链讲座第二讲

本文介绍了区块链技术的三个关键词：去中心化、共识机制和智能合约。

去中心化：去中心化是区块链技术的核心思想。它指的是一种分布式网络，没有一个中心节点来控制网络的运行，而是由网络中的所有节点来共同维护网络的安全性和完整性。去中心化的优势在于，它可以使网络中的所有节点都受到平等的待遇，每个节点都可以参与到网络的运行中来，从而提升网络的可靠性和安全性。

共识机制：共识机制是区块链技术的核心技术。它是指在去中心化的网络中，通过一种特定的算法来达成所有节点对数据的一致性。共识机制的优势在于，它可以使网络中的所有节点都能够达成一致的结论，从而保证数据的安全性和可靠性。

智能合约：智能合约是区块链技术的一种应用。它是一种可以自动执行的计算机程序，它可以在去中心化的网络中自动完成一些复杂的交易，比如股票交易、保险等。智能合约的优势在于，它可以让交易更加快捷、安全、可靠，而且可以有效减少交易成本。

以上就是区块链技术的三个关键词：去中心化、共识机制和智能合约的介绍，希望能够为读者提供一些帮助。

『一』What is blockchain ppt

Explained from an academic perspective, blockchain is a computer with distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm, etc. New application models of technology. Blockchain is essentially a decentralized database.
For example, if you are a woman, every time your boyfriend says something disgusting to you or promises to buy you something, you immediately record it and send it to all your best friends, classmates, Colleagues, as well as various groups and circles of friends, make it impossible for him to deny it anymore. This is called blockchain.
The core advantage of blockchain technology is decentralization. It can achieve decentralized credit in a distributed system where nodes do not need to trust each other by using data encryption, timestamps, distributed consensus and economic incentives. Point-to-point transactions, coordination and collaboration, thereby providing solutions to the problems of high cost, low efficiency and insecure data storage common in centralized institutions.
The application fields 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. , which has had a relatively large impact on the domain name industry.

『二』What is blockchain technology.ppt

Explain in layman’s terms: If we assume that the database is a ledger, reading and writing the database can be regarded as a kind of accounting The principle of blockchain technology is to find the fastest and best person who can keep accounts within a period of time, let this person keep accounts, and then send this page of information in the ledger to everyone else in the entire system. This is equivalent to changing all the records in the database and sending them to every other node in the entire network, so blockchain technology is also called a distributed ledger.
Bitcoin, Litecoin, smart contract platform Ethereum, and distributed content publishing platform DECENT all utilize blockchain technology.

『三』What exactly is blockchain? Which blockchains have physical applications

What is blockchain?

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

Vernacular understanding: A block is to package all the data generated within a time period in chronological order. Generally, the length of a block is 10 minutes, which means that within 10 minutes, all the data on the Internet will The data is packed into a complete package, and this complete data package is called a block. The blockchain links these data packages in order to form a structure, and cryptographically ensures that it cannot be tampered with or forged to form a distribution. ledger, this is the blockchain.

It seems that everyone has a preliminary knowledge and understanding of the blockchain. So, does the blockchain have any practical application in daily life?In terms of practical applications, the answer is yes. The current practical applications mainly include the following aspects. Of course, I don’t know some of them. Friends are welcome to leave messages to add.

Financial Industry

Blockchain should be used the most in the financial industry.

For example, in May 2017, OMG (Omise Coin) announced that it would cooperate with Alipay to launch an electronic wallet, integrating the "Alipay" payment solution into its own payment service suite to help local electronics in Thailand. Business merchants accept online payment transactions from Chinese tourists.

Another example is PPT, which is a financial transaction system for bills based on blockchain.

Gaming

The gambling industry entered the blockchain probably last year. Why does gambling favor blockchain? Because blockchain provides a relatively fair betting system. Why? It is relatively fair. As can be seen from the previous introduction, the blockchain cannot be tampered with or forged.

For example, WICC (WikiChain) can realize rich application scenarios such as asset issuance, betting applications, copyright traceability, mutual insurance, decentralized exchanges, and cross-border settlement.

For example, the STX (King of Fighters Token) stox application is designed to provide the full functionality of a prediction market application without the need for any central server. Prediction markets require functions such as event planning, market production, providing information and analysis to traders, reporting event results, and of course collection and payment.

I believe that if the current lottery industry is built on the blockchain, people will become more and more enthusiastic about buying, because there are too many insider tips that make people give up.

Internet of Things

The Internet of Things still has many applications on the blockchain, because the traceability and immediacy of blocks are very suitable for this industry.

For example, DATA is the concept of the Internet of Things. It is a decentralized p2p network. Data sources can connect to any node in the entire network, then publish data, and the network will immediately send it to subscribers. Horizontal scalability is achieved through sharding pattern. This timeliness and accuracy are very important in IoT applications.

Game industry

For example, GTC (G coin) is a decentralized digital asset based on Ethereum erc20 issued by Game Global. G coin is committed to becoming a universal number in the global game industry. Monetary standards.

For example, MANA is a distributed shared virtual platform. On this platform, users can browse and discover content and interact with other people and entities. Users can also claim ownership of virtual territories through a blockchain-based land ledger. The territory is demarcated by rectangular coordinates (x, y), and its owner can decide the content published on the territory, including static 3D scenes to interactive systems such as games.

There are many other industries. The emperor did not list them one by one, but listed a few representative ones. What is the purpose? It shows that the blockchain is definitely not just a currency transaction, it has realIt is a project that has been implemented and is a product of the changes of the times that has real practical uses.

The development of human society is actually like the blockchain, it is irreversible and unstoppable. As far as I feel, the blockchain will enter thousands of households sooner or later. Regardless of whether it is bull or bear, hold it in your hands. Value coins and Flush have started quoting digital currencies, which shows that society is accepting it step by step. The power of social development cannot be blocked by any country or person.

『四』What is blockchain and how to make money with blockchain

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

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

『五』What is Blockchain< /p>

When everyone talks about blockchain and digital currency, they all turn a blind eye and avoid them in fear

What is blockchain?

What is digital currency?

Let the public be more intuitive and clearThe realization that this is blockchain.

What is blockchain? Many people are still not very clear about blockchain. Let’s give you a simple explanation. Let’s take a look.

1. Blockchain concept

Professional terminology: Blockchain is a distributed data storage, point-to-point transmission,

consensus mechanism, encryption algorithm and other new application models of computer technology.

Popular handout: Quoting the explanation in the video, the blockchain replaces all these opaque cups with transparent cups, so that you can always know where your money is, and it will always belong to you. Will be stolen by others.

2. Blockchain

Basic characteristics

1. Decentralization

In traditional centralized network systems In a decentralized blockchain network, hackers can destroy the network by attacking a central node. However, in a decentralized blockchain network, there is no central node to attack

Moreover, the decentralized transaction method is convenient and convenient. There is no third party intervention, and point-to-point direct interaction makes large-scale information interaction a reality

It not only ensures that the information is not leaked, but also ensures that the key is in your hand, and transactions can be fast and convenient.

2. Openness

The system is open. In addition to the private information of the transaction parties being encrypted, the blockchain data is open to everyone and anyone can Query blockchain data and develop related applications through public interfaces, so the entire system information is like a transparent cup, and everyone can see the contents inside.

3. Information cannot be tampered

When a block is verified and added to the blockchain, it will be stored permanently and cannot be changed unless the system is controlled at the same time. More than 51% of the nodes, otherwise the modification of the database on a single node will be invalid, so the data stability and reliability of the blockchain are extremely high.

4. Anonymity

Since the data exchange between nodes in the blockchain follows a fixed and predictable algorithm, the blockchain network does not require trust and can be based on addresses. Non-personally identifiable data is exchanged. The anonymity of the blockchain is a double-edged sword. It not only protects the confidentiality of information and the security of transactions, but it also causes rampant illegal transactions. It has caused difficulties for law enforcement agencies and created a sense of distrust among users.

The above is a partial introduction to the basics of blockchain. I believe that as the public becomes more and more aware of blockchainunderstanding, this technology will be recognized and used by more people,