安链云区块链平台介绍ppt,安链云区块链平台介绍视频

请查看相关英文文档

Ⅰ 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 whether the blockchain has any practical application in daily life, the answer is yes, the current practical application There are mainly the following aspects. Of course, I may not 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. The data source can be connected to any node in the entire networkConnect, then publish the data and the network will send it to subscribers immediately. 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 is a real implementation project, and it is a product of the changes of the times with 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.

Ⅱ Blockchain App

Blockchain apps include: NetEase Planet Base, Shulian App, Lianxiang Finance, Shijilin Blockchain Trading Platform, and Blockchain Electronic Wallet , Ostrich Blockchain, GXSWallet, Coin Wallet, Youling Wallet.

1. NetEase Planet Base

Introduction

Planet Base helps you manage digital assets through blockchain encrypted storage technology, making your data truly yours. .

Each of us is performing useful behaviors all the time. Credit data, attention, and Internet traces are all important personal data assets, including social interaction, entertainment, shopping, travel, etc. These assets have not been valued by individuals in the past. Now Planet Base builds your identity as a planet resident, helps you discover your own value, and enables the value of personal information to be reflected fairly and equitably.

Core

1. Blockchain identity: Based on blockchain technology, once created it will be unique and cannot be tampered with.

2. Decentralized value exchange: Help you comprehensively manage personal information data, tap your own value, and then commercialize the value of personal information data.

3. Information security storage: All your information will be encrypted and stored through blockchain technology. If others need to view your information, they must obtain your consent.

2. Digital Chain App

Digital Chain focuses on the fields of innovative finance and investment and financing, and uses the Internet, blockchain and venture capital to cover the scale.Interpret new economic and financial trends from a perspective. Create a one-stop platform integrating information, digital assets, and blockchain financial services.

Features

1. Real-time news, 7x24 direct focus of global attention.

2. Project disclosure, in-depth disclosure of every project update.

3. Digital chain market, real-time price, and comprehensive introduction allow you to understand the currency better.

4. News selection, in-depth interpretation of the new boundary of blockchain.

5. Interviews with big names, directly exploring the blockchain innovators opening a new era.

3. TimeLin Blockchain Trading Platform

Introduction

First of all, it can be used for public welfare. Users can subscribe to a "tree" through TimeLin. It is equivalent to adopting a large fir tree in Suichang Mountain, Zhejiang, so that everyone can participate in environmental protection and forest protection public welfare activities in the simplest way.

Secondly, it can be used as an investment. The big fir trees owned by users grow up every day. Based on the current market value of a 10-year-old fir tree at 300 yuan, it means that each "tree" grows every year. Can add 30 yuan in value.

Again, it can be consumed. At present, Shijilin has reached cooperation with many businesses related to forest products. In the future, users can use "trees" instead of currency to stay in a country B&B, go on a jungle adventure, or purchase forest products online, etc. And, the longer you hold it, the greater the value becomes.

4. Ostrich Blockchain

Introduction Ostrich Blockchain is affiliated to Shanghai Yibei Technology Co., Ltd. and is a professional blockchain and digital asset service platform. Its subsidiaries include information and market platforms, professional digital investment banks, and digital investment funds. The information and market market platform is committed to providing users with real-time and practical industry information and market data. Professional digital investment banks and digital investment funds are committed to investment, incubation, and services to help high-quality projects transform into blockchains, and have successfully invested and serviced more than 50 projects.

5. Youling Wallet

Youling App builds a personal-centered value exchange network and ecology, and creates a decentralized interactive entertainment and blockchain new economic platform.

Youling App adopts a decentralized open model, allowing individuals (third-party developers) to develop various applications based on the Youling open platform. Each user can freely choose applications to build their own homepage, including but Not limited to: souvenirs, live broadcasts, sharing, communities, service sales, and product sales.

Ⅲ What are the NFT platforms? An inventory of the four major platforms

As NFT continues to warm up, it has also joined the current metaverse wave. This article will introduce to you the four most popular Metaverse NFT platforms.

1.OpenSea

Established in 2018, OpenSea is a global digital commodity buying and selling market based on blockchain. Open is positioned as the industry’s leading decentralized exchange (DEX), providing peer-to-peer synchronization on Ethereum.NFT trading. The comprehensive platform sells a variety of digital goods, including digital artwork, crypto collectibles, gaming items, and more. On the OpenSea platform, users can buy, sell and exchange tokens with anyone in the world.

2.SuperRare

SuperRare is a social network platform for art creators and collectors. Its smart contract platform allows artists to publish on-chain tracked limited edition digital art collections that are rare, verifiable, and collectible. In March 2021, SuperRare completed US$9 million in Series A financing. The investors are VelvetSea and 1confirmation, followed by MarkCuban, Chamath Palihapitiya and Marc Benioff. SuperRare has strict review standards for artists. In order to join SuperRare, artists need to apply to the platform, and only original authors who pass the review can sell NFT.

3. Foundation

Unlike other "application review system" platforms, Foundation is an invitation-based NFT art platform, and only the works of invited artists can be put on the shelves. The Foundation adopts a community-led curatorial model, first inviting 50 artists to the platform, and then giving these artists two invitation codes. Resident creators who successfully sell an original work on the platform will receive two invitation quotas and can invite new people. If the invitee also successfully sells the first piece of work, he can also get 2 invitation codes. This is similar to the voice social software Clubhouse. It is worth mentioning that if an artist maliciously buys or sells invitation codes, he or she will be deprived of permanent residency.

4.Rarible

Rarible is an NFT publishing and trading platform that creates and sells blockchain-protected digital collections. The platform is an open source and non-custodial platform for users to mint, sell and create collections. Any user can enter Rarible to create and display their own art, or use Taifang tokens to purchase art for collection. Users have ownership and intellectual property rights in tokens. Buyers and sellers can trade collectibles on the rarity market for almost negligible prices. Rarible also released its own original governance token ERC-20 in 2020, which improved the sales process and sales conditions of the market and reduced the user's cost to almost zero.

IV What is the blockchain service in the blockchain

In many cases of blockchain industry applications, we can always see the word BaaS. BaaS is Blockchain as a The abbreviation of Service, translated into Chinese as "Blockchain as a Service". So what exactly is Blockchain as a Service BaaS? We'll take itLet’s discuss this question in detail with Xiao Wang from the Renren Blockchain Technology Team.
According to Xiao Wang: Blockchain as a Service BaaS is a concept mainly proposed by the two giants Microsoft and IBM. To put it bluntly, it is actually a new type of cloud service, a cloud service that combines blockchain technology. . For example, Microsoft's Azure cloud computing platform and IBM's Bluemix Garage cloud platform both provide blockchain as a service BaaS.
Blockchain as a Service BaaS is a space created by companies such as Microsoft and IBM from their own cloud service networks to run a certain blockchain node. Compared with ordinary nodes and exchange nodes, the main purpose of BaaS nodes is to quickly establish the development environment you need and provide a series of operational services such as blockchain-based search queries, transaction submissions, and data analysis. These services can both It is centralized or decentralized, and is used to help developers verify their concepts and models faster. The serviceability of BaaS nodes is reflected in: stronger tools, making it easier to create, deploy, run and monitor blockchains. .

IV Can luxury goods be prevented from counterfeiting with blockchain technology? How about Anlian Cloud?

Blockchain technology is of great significance to the fight against counterfeiting of luxury goods. Zhongan Anlian Cloud is suitable for many industries. There are successful cases of cloud services for practical application solutions, such as BuBuChi and diamond anti-counterfeiting. They are also slowly showing their talents in luxury goods.

VI The most straightforward explanation of blockchain

In recent years, the term "blockchain" has become a hot topic, and news media have been reporting on it, but everyone may not understand the concept of blockchain. The understanding of chain is still at the stage of looking at flowers in the fog. Today we will unveil its mystery.

In fact, the essence of blockchain is very simple and can be explained in one sentence: decentralized distributed database.

The main function of the blockchain is to store information. Anyone can write information and read it at the same time, so it is a public database.

Characteristics of blockchain

Distributed database technology has long existed in the market, but the difference is that although blockchain is also a distributed database , but it has no administrator and is completely decentralized.

Decentralization is a disruptive feature of blockchain technology. It does not require a centralized agent and realizes a direct point-to-point interaction, enabling high-efficiency, large-scale, and information interaction without a centralized agent. way becomes reality.

However, without an administrator, everyone can write data into it. How can we ensure that the data is trustworthy? What should I do if I am changed by a bad person? The designers have already thought of this, which proves that blockchain is a truly epoch-making product.

Block

The blockchain is composed of blocks. Blocks are much like database records. Every time data is written, a block is created.

Each block contains two parts:

Block header (Head): records the characteristic value of the current block
Block body (Body): actual data
The block header contains multiple characteristic values ​​of the current block.

Generation time
Hash of the actual data (i.e. block body)
Hash of the previous block
...
Every time in the system Each node has the latest complete database copy. Modifying the database of a single node is invalid because the system will automatically compare and consider the same data record that appears the most times to be true. At the same time, every step of the data record will be retained on the blockchain, and the information at each step can be traced.

Here, you need to understand what a hash is, which is necessary to understand the blockchain.

The so-called "hash" means that the computer can calculate a characteristic value of the same length for any content. The hash length of the blockchain is 256 bits, which means that no matter what the original content is, a 256-bit binary number will be calculated in the end. And it can be guaranteed that as long as the original content is different, the corresponding hash must be different.

For example, the hash of the string 123 is (hexadecimal), which is 256 bits when converted to binary, and only 123 can get this hash. (Theoretically, it is possible for other strings to get this hash, but the probability is extremely low and can be approximately considered impossible.)

Therefore, there are two important inferences.

Corollary 1: The hash of each block is different, and the block can be identified by the hash.
Corollary 2: If the content of the block changes, its hash will definitely change.

The immutability of hashes

Blocks and hashes have a one-to-one correspondence, and the hash of each block is for the "block header" (Head) computational. That is to say, the characteristic values ​​​​of the block header are connected together in order to form a very long string, and then the hash is calculated on this string.

Hash = SHA256 (block header)

The above is the calculation formula of block hash. SHA256 is the hash algorithm of the blockchain. Note that this formula only includes the block header and not the block body. In other words, the hash is uniquely determined by the block header.

As mentioned earlier, the block header contains a lot of content, including the hash of the current block body and the hash of the previous block. This means that if the content of the current block body changes, or the hash of the previous block changes, it will definitely cause the hash of the current block to change.

This is of great significance to the blockchain. if someoneWhen a block is modified, the hash of the block changes. In order for subsequent blocks to still be connected to it (because the next block contains the hash of the previous block), the person must modify all subsequent blocks in sequence, otherwise the modified block will be removed from the blockchain . Due to the reasons mentioned later, hash calculation is very time-consuming, and it is almost impossible to modify multiple blocks in a short period of time, unless someone controls more than 51% of the computing power of the entire network.

It is through this linkage mechanism that the blockchain ensures its own reliability. Once the data is written, it cannot be tampered with. This is just like history, what happened happened, and it can’t be changed from now on.

Ⅶ Popular explanation of what blockchain is

Question 1: What is blockchain? Can you explain the principle of 10-point blockchain in plain language: decentralization A distributed accounting system
The core of blockchain technology is that all currently participating nodes jointly maintain transactions and databases. It makes transactions based on cryptographic principles rather than trust, so that any two parties who reach an agreement can directly Payment transactions are carried out without the involvement of a third party.
?
Technically speaking, a block is a data structure that records transactions, reflecting the flow of funds for a transaction. The blocks of transactions that have been reached in the system are connected together to form a main chain, and all nodes participating in the calculation record the main chain or part of the main chain. A block contains the following three parts: transaction information, hash hash formed by the previous block, and random number. Transaction information is the task data carried by the block, specifically including the private keys of both parties to the transaction, the number of transactions, the digital signature of electronic currency, etc.; the hash formed by the previous block is used to connect the blocks to realize the past The order of transactions; random numbers are the core of transaction completion. All miner nodes compete to calculate the answer to the random number. The node that gets the answer the fastest generates a new block and broadcasts it to all nodes for update, thus completing a transaction.
1.1 What is Blockchain
Blockchain (BlockChain) refers to a technical solution that collectively maintains a reliable database through decentralization and trustlessness. This technical solution mainly allows any number of nodes participating in the system to associate and generate a series of data blocks (blocks) using cryptographic methods. Each data block contains all the information exchange data of the system within a certain period of time, and generates The data fingerprint is used to verify the validity of its information and chain to the next database block.
?
In layman’s terms, blockchain technology refers to a way for all people to participate in accounting. Behind all systems there is a database, which is a big ledger. Then who will keep this ledger becomes very important. At present, it is whoever owns the system who keeps the accounts. Each bank’s account books are kept by each bank, and Alipay’s account books are kept by Alibaba. But now in the blockchain system, everyone in the system can have the opportunityParticipate in accounting. If there are new transaction data changes within a certain period of time, everyone in the system can do accounting. The system will judge the person who has the fastest and best accounting during this period, write the recorded content to the ledger, and Send the contents of the ledger during this period to all other people in the system for backup. In this way, everyone in the system has a complete ledger. Therefore, this data becomes very safe. A tamperer needs to modify more than half of the system node data at the same time to truly tamper with the data. Such tampering would be extremely costly, making it nearly impossible. For example, Bitcoin has been running for more than 7 years. Countless hackers around the world have tried to attack Bitcoin, but so far there have been no transaction errors. It can be considered that the Bitcoin blockchain has been proven to be a safe and reliable system.
?
1.2 Why is there blockchain innovation?
Human beings need to communicate during their activities, and communication is based on information. In the past, information circulation was not convenient enough to satisfy market participants. There is a demand for information, so intermediaries and centers are born. This centralized system has problems such as high cost, low efficiency, value dispersion, "information islands" and insecure data storage. However, due to technical and environmental factors, this system continued to operate for many years until the emergence of the Internet. The starting point of the first generation of the Internet is the TCP/IP protocol, which is an open code that implements a unified format for peer-to-peer transmission of information by all nodes on the network, and brings the basic values ​​of freedom and equality required by a global unified market into programmed, protocol-based, and reliably Execution. The Internet eliminates low-value, high-cost intermediate chains and achieves low-cost and high-efficiency global information transmission in a decentralized manner.
?
However, the first generation of the Internet did not solve the problem of information credibility. Activities that can be decentralized on the Internet must be activities that do not require credit endorsement, and activities that require credit guarantee must be activities involving centralized third-party intermediaries. Therefore, Internet technology that cannot establish global credit has encountered great obstacles in its progress - people cannot participate in any value exchange activities on the Internet in a decentralized manner. To realize value exchange, people still need third-party intermediaries based on credit (such as banks, clearing agencies, exchanges). The global centralized credit system still has problems such as high operating costs, low efficiency, and vulnerability to attacks and damage. For example, each country's legal currency has different credit values ​​and incompatible clearing systems, which adds a lot of cost to global trade.
?
Therefore, what the second generation Internet must break through is: how to establish global credit in a decentralized manner? Let...>>

Question 2: What is blockchain? What does it mean in layman’s terms? What is China’s attitude towards blockchain? What can blockchain do? Blockchain, a great technology that accompanied the birth of Bitcoin, is currently being used in the financial field to significantly reduce transaction costs.Costs and improved efficiencies are enough to get Wall Street excited. However, this is just the tip of the iceberg. Its potential applications are very broad and will subvert every aspect of our lives in the future.
Blockchain is an important concept of Bitcoin. It is essentially a decentralized database and serves as the underlying technology of Bitcoin. One of the most basic characteristics of Bitcoin is decentralization. In recent months, financial giants have gradually begun to pay attention to Bitcoin's technology and used it in non-monetary fields, such as stock trading, election voting, etc. (1) Art Industry
Artists can use blockchain technology to declare ownership and issue numberable, 100% edition works in digital form for any type of artwork. It even includes a marketplace where artists can buy and sell through their website without the need for any intermediary services.
(2), Real estate industry
Use blockchain technology to solve various problems faced by everyone involved in real estate, including the naming process, land registration, agency intermediaries, etc.
(3), Insurance Industry
The financial industry has always been the most sensitive to advanced technology. Traditional banking and securities industry giants have been involved in the booming blockchain venture capital investment since 2014, with total global investment reaching US$1 billion within two years.
(4) P2P wallet
Personal assets can be traded through this P2P wallet in the future without going through any central institution, such as Bitcoin.
Most blockchains are in their infancy, mainly overseas. There are very few good domestic blockchain projects, so it is not recommended for any non-professionals to invest in blockchain projects. If you are very interested in blockchain technology and have a technical or financial background, it is recommended that you consider starting a business in this area. In terms of the blockchain protocol system, the lowest layer is the underlying technology of the blockchain, including the technical protocols of the blockchain, as well as some platform routing and basic algorithms; in the middle layer, some application interfaces and some credentials must be solved Issuance and verification, including some industry platform services, big data analysis, etc. This is a very rough classification, and there should be more detailed classifications; the top ones are some applications of blockchain, including finance Some applications and some applications in other aspects, the Internet of Things and so on.
Introduction to Bubi Blockchain
Bubi Blockchain has been focusing on the research and development and innovation of blockchain technology and products since its establishment. It has a number of core technologies and has achieved substantial results in many aspects. Radical innovation has resulted in a number of core technological achievements, such as: mathematically provable distributed consensus technology, fast large-scale ledger access technology, multi-chain general ledger technology that supports business expansion, and interconnection technology between heterogeneous blockchains. wait. On April 25, "Gege Points" introduced the concept of blockchain into the points system, jointly opened it up with multiple parties, issued and redeemed points, and promoted the circulation of points.Each cooperative institution can jointly participate in transaction verification, ledger storage, and real-time settlement; the third-party payment platform of the enterprise points issuer makes the entry and exit of points more flexible. Bubi has developed its own basic blockchain service platform, which has been applied in equity, supply chain, points, credit and other fields. Bubi has been committed to building an open value circulation network with decentralized trust as the core, allowing digital assets to flow freely.
A simple understanding of blockchain is a technology at the bottom of Bitcoin, which is also a peer-to-peer electronic cash system that can realize peer-to-peer value delivery. We should distinguish between Bitcoin, Bitcoin blockchain, blockchain and blockchain. Blockchain technology and other concepts. In countries with relatively developed finance in the past, finance and blockchain technology have a long history, and the legislation of digital currencies and blockchain networks is also very important. With the advent of the financial era, large financial institutions are studying blockchain technology. They have their own teams and conceptual technologies. Slowly, banks in various regions are also participating in digital currency discussions. The application and support of this technology are not only that. The influence of blockchain on enterprises is also huge. For larger domestic enterprises, Bubi Blockchain is also used in various equity, supply chain, points and other fields. Major domestic financial institutions and enterprises have taken a fancy to the new industry. value, they have developed their own blockchain platforms, and blockchain has instantly become a new innovative industry in China. In terms of overseas internationalization, the United States has already obtained 15 blockchain patents at the end of last year compared to China. Blockchain financial applications are entering a new stage in an all-round way. Various applications will become more and more in-depth, and related changes will also become more and more profound. It has attracted more and more attention and will form a huge new trend... >>

Question 3: What is blockchain technology? What exactly is blockchain? What is blockchain? 1. Data blockchain is an important concept in the Bitcoin financial system. It records transaction record data on the entire Bitcoin network, and these data are shared by all Bitcoin nodes. Through the data block, we can query each transaction record. A look at the history of Bitcoin transactions. 2. Example: There are three persons A, B, and C. All funds of A and B are kept by C. And every financial transaction must be recorded by C. Now assume that A and B each have 1 million in custody of C. Then: A spends 80,000 yuan to B, then C's account book record will subtract 80,000 yuan from A's name, and add 80,000 yuan to B's name. If B transfers 50,000 yuan to A, C will add 50,000 yuan to A's name and subtract 50,000 yuan to B's name in the account book. A spends 50,000 yuan to B, then C's account book record will subtract 50,000 yuan from A's name, and add 50,000 yuan to B's name. 3. The role of the data blockchain is similar to that of C’s account record book. It records the user’s ownership of Bitcoin and the records of all users’ Bitcoin transactions. It’s just that this “account record book” is recorded by the mining software of every Bitcoin miner on the network. If a Bitcoin transaction is confirmed by the blockchain, the relevant information will beRecorded in the data blockchain. Bitcoin’s “account record book” is called the data blockchain. All data blockchains on the network form Bitcoin’s distributed network database system. 4. The essence of data blockchain technology is a decentralized and distributed structure of data storage, transmission and certification methods. It uses data blocks to replace the current Internet's dependence on central servers, so that all data changes or transaction items are recorded. On a cloud system, the self-certification of data during data transmission is theoretically realized. In a far-reaching sense, this transcends the traditional and conventional information verification paradigm that relies on a center and reduces the cost of establishing global "credit." This point-to-point verification will produce a "basic protocol", which is a new form of distributed artificial intelligence and will establish a new interface and shared interface between human brain intelligence and machine intelligence.

Question 4: What is blockchain: This explanation of blockchain is more understandable. Blockchain refers to a technology that collectively maintains a reliable database through decentralization and trustlessness. plan.
In layman’s terms, blockchain technology refers to a way for all people to participate in accounting. There is a database behind all systems. You can think of the database as a big ledger. Then who will keep this ledger becomes very important. Currently, whoever owns the system keeps the accounts. Tencent keeps the accounts of WeChat, and Alibaba keeps the accounts of Taobao. But now in the blockchain system, everyone in the system has the opportunity to participate in accounting. If there are any data changes within a certain period of time, everyone in the system can do accounting. The system will judge the person who has the fastest and best accounting during this period, write his recorded content into the ledger, and record this Within a period of time, the contents of the ledger are sent to all other people in the system for backup. In this way, everyone in the system has a complete ledger. In this way, we call it blockchain technology.
Blockchain technology has become the darling of the financial community in China and has become a hot topic. Domestic Puyin Group has launched Puyin, a tea-based digital currency.

Question 5: Explain in an easy-to-understand manner what blockchain is. Blockchain can be understood as a database system in a sense. The development of blockchain can be divided into 1.0 and 2.0
1.0 is represented by Bitcoin, and its main application is virtual currency or digital currency application. The blockchain at this time can only be used for simple digital currency transactions.
2.0 is represented by the now popular ethereum (Ethereum) and the upcoming hyperledger. The blockchain at this stage can not only meet the corresponding digital currency transactions, but also use smart contracts to customize currency or asset transactions. If we use the database analogy, the emergence of smart contracts can be understood as allowing users to define functions or stored procedures (pro) in the database.cere), and the call is executed.
Different from traditional databases, the blockchain introduces consensus mechanism, incentive mechanism, p2p (network), hash and other specific elements, making it open, decentralized and non-tamperable. characteristic.

Question 6: What is blockchain? Can anyone explain it in simple terms? Blockchain is the underlying technology of Bitcoin. It is like a ledger that records all transactions. It is decentralized. What is decentralization? For example, when you buy something on Taobao, you place an order and pay in Alipay. Alipay will not transfer the money to the seller until you receive the goods. Alipay is the third party in that center. Without it, it means decentralization, just like buying things offline. If you pay with one hand and get the goods with the other hand, there is no third party.
The blockchain itself is a series of cryptographically related data blocks generated.
Look carefully to see if it looks like a ledger. The pieces one by one are blocks, and connected together they are the blockchain.
Many companies are developing this technology, including ours, and its prospects are incredible. For details, you can go to our official website and hope to adopt it, thank you

Question 7: What is blockchain technology? What is blockchain? How to explain the concept of blockchain? People in each industry have different understandings, and relevant explanations are gradually emerging due to more and more real-life applications. With the popularization of this blockchain technology, the related results are getting bigger and bigger. If we want to understand this technology, we must have an in-depth understanding of reality.
In the past six months, the concept of blockchain has gradually become popular in China, and a blockchain whirlwind has taken off in the financial circle. Blockchain has attracted the attention and favor of more and more people in the industry due to its unique technical advantages. Blockchain technology, which is decentralized (or multi-centered), highly transparent, cannot be tampered with, and has no single point of failure, is entering the field of vision of financial institutions and enterprises. It has at least been used in digital currency, payment exchange, registration and settlement, Digital assets, traceability and anti-counterfeiting, supply chain, Internet of Things and many other fields have moved from theoretical discussions to practical applications.
"Blockchain" was first introduced with "Bitcoin" released in early 2009. Blockchain has become the basic protocol and technical application for the launch, recording, and circulation of Bitcoin. Although Bitcoin has been controversial since its inception and cannot even be regarded as a "currency" by governments and monetary authorities, the blockchain technology used in Bitcoin has been recognized by governments, including governments and monetary authorities. extensive attention.
Why has blockchain become a rapidly heating up hot technology and topic?
The most important of these may be that the launch of Bitcoin based on blockchain technology has opened up a new relationship with traditional society ( Brand-new technologies and regulations such as Internet user identity verification, wealth confirmation, transaction records, and notarization verification that have little connection with offline) and are fully applied in the online world (online)Exploration and experimentation of the system, which provides people with alternative paths and unlimited imagination to adapt to the development of the Internet society.
Judging from its application in Bitcoin, blockchain is a set of new network blocks (BLOCK, also called communities) formed by combining encryption technology with the Internet. Bitcoin configuration, netizen identity verification, and Bitcoin (value) confirmation formed by mining, Bitcoin transaction records, and extended encryption of Bitcoin cross-block flow (value transfer) (added block and transaction time identification, etc. Internet protocol rules and accounting (Ledger) system including block chain, full encryption, mutual authentication, etc., including factor) registration and verification. Precisely because Bitcoin is not a substitute for offline legal currency, but is issued and managed by non-legal currency authorities, mainly imitating the model of gold, and is completely new and decentralized protected and supported by basic Internet protocols and strict encryption technology. Internet currency (virtual currency) has thus formed a new set of currency rules and systems that are different from and not subject to real social laws, and can be bought, sold or exchanged with legal currency. It has been more than 8 years since Bitcoin was launched. There has been no record of funds or user information being stolen. Its security has been verified, and its efficiency and cost of fund settlement also have obvious advantages. This has made people's confidence in the blockchain technology used in Bitcoin continue to increase, and people have become more and more aware that although blockchain is a technology and protocol pioneered and applied by Bitcoin, the blockchain Chain is not the same as Bitcoin, and its application is by no means limited to Bitcoin. The application of blockchain can be decentralized or centralized; it can be a public chain model or a private chain model. Therefore, after Bitcoin, blockchain technology is also constantly developing and innovating, and constantly exploring new application fields, especially in the financial field.
The reason why blockchain is valued highly by more and more people is because the development and widespread application of the Internet have caused more and more economic exchanges and transaction activities to be conducted online, and the online world (or online world) society) is rapidly expanding, enriching and active, and online transactions must solve the efficiency and security protection issues of the parties' identity verification, value verification, transaction records, inspection and verification, etc., and require strict intermediaries and agreements (rules or constitutions). In this regard, traditional thinking and customary practices are to follow the development trajectory of the transfer of offline transactions to online and push the common rules and practices of the real (offline) society to the online (network) society. However, in practice, it is increasingly It is difficult to adapt to the needs of online transactions.
For example, for the identity verification of the parties, the natural choice is to use the information on the identity documents protected by the laws of various countries as the basis, and then add account or transaction passwords, as well as facial recognition, iris, fingerprints and other biometrics to conduct online transactions. Verification, but this method first makes citizen identity information in the cross-border interconnected online world subject toTo the constraints of administrative jurisdiction in real society... >>

Question 8: Explain clearly what is blockchain in an easy-to-understand manner. The English name for blockchain is Blockchain. Block literally means block, block, and chain means chain, chain. Therefore, together they are translated into blockchain.
1. Use cryptography technology to encrypt and decrypt so that records cannot be tampered with. Common blockchain encryption methods include hash algorithm, RSA algorithm, elliptic curve algorithm, etc.;
2. The huge amount of calculation needs to be supported by a reasonable reward mechanism. Because every transaction must be recorded, Bitcoin’s blockchain has more than 60 gigabytes so far. Every new transaction requires confirmation of the information related to the trading account to ensure that the transaction is valid. The huge amount of calculation requires a computer with powerful computing power to complete.
In order to encourage the participation of powerful computing power, Bitcoin provides two rewards: one is to issue a certain number of Bitcoins to these computers every day; instead, all transfer fees are awarded to these computers. (The technical term for these computers is "mining machines", and the people who hold the mining machines are called "miners".)
Biying China is working hard on the digitization of assets and has launched the digital currency crowdfunding platform Biying China.

Question 9: What is the so-called "blockchain"? Blockchain itself is a tool called decentralization and trustlessness. For example, when you graduate from university, the current practice is to have a certificate recognized and issued by an authoritative agency as your certificate. This setting is more troublesome, because this is a piece of paper, and paper can be forged, so there will be various gaps. The issuing authority is also a person, and there will be various gaps in the middle. As long as it is related to people, whoever There are various possibilities related to media. The blockchain provides a great opportunity. As soon as you graduate, you will have a record on the blockchain. No one can change this record. This thing exists objectively. You, as a physical existence , and then as a data existence, the blockchain was born. In this case, anyone who wants to check where you graduated can easily solve the problem. This is similar to the big data often involved in social networking (WeChat) and payment platforms (Alipay, Yibao).

Question 10: What does blockchain mean? Regarding blockchain, I think you have already seen the concept on the Internet. Let me explain it based on my understanding!
First, let’s talk about its characteristics: 1. Openness and transparency 2. Decentralization 3. Anonymity 4. Information cannot be tampered with, eliminated 5. No trust cost
Blockchain is like a public ledger , everyone has the right to record and read, and everyone will jointly supervise to ensure its accuracy, and the recorded content will be permanently saved and can only be added but not deleted.! However, as the number of blocks continues to increase, costs will increase and efficiency will decrease. (I’m not sure whether technology can be used to make up for this. I hope someone who understands technology can point it out.)
Blockchain is divided into public chain, private chain, and alliance chain. Public chain: accessible to everyone, everyone has read and write permissions, completely open, transparent and decentralized. Private chain: Open to individuals or institutions, in which the owner of the private chain can set various permissions to make it partially centralized. Alliance chain: Open to specific organizations or groups, it is also "partially decentralized". According to the ledger at the beginning, members can view and transact, but cannot record and confirm bills, or require permission from the alliance. (The latter two do not have cost and efficiency issues)
Regarding blockchain, countries have begun to recruit talents in this area. For this, you can search online for "Central Bank Recruiting Digital Currency R&D Personnel". In addition, you can increase your understanding of blockchain by understanding its existing applications. What we usually refer to generally refers to public chains. Currently, those used abroad include Bitcoin, Ethereum and other domestic blockchains. Chain
1. Open and transparent: Every piece of data is verified by everyone and can be viewed by everyone at any time.
2. Decentralization: For example, when we shop on Taobao, we conduct transactions through the intermediary Taobao, and blockchain allows both supply and demand parties to directly contact each other for direct transactions through blockchain technology.
3. Anonymity: No personal privacy information is required to complete transactions on the blockchain, only your unique alphanumeric signature is required.
4. Information cannot be tampered with or deleted: Once the data has been verified and recorded, no one has the authority to modify it, let alone delete it!
5. No trust cost: The trust crisis in reality will not appear in the blockchain. Transactions in the blockchain do not require you to trust the other party. Only when both of you have enough "digital assets" to trade can it be carried out, and Under the supervision of the entire network, transactions will not be broken. If you have no idea about the cost of trust, just think about how many intermediaries there are in your city, or just think about Jack Ma, and you will know how big the cost of trust is.
I am still learning more about blockchain. I am Li Ailin. If you have any questions, you can discuss and learn together!

VIII Blockchain Era: Transformation from Information Internet to Value Internet

Guosen’s Viewpoint

Guosen Overseas Group’s Viewpoint:

Internet Development Until now, its main function is to allow information to circulate on the Internet, and information is spread by copying (A is copied to B). The "ledger" constructed by the blockchain is open, transparent, non-tamperable, peer-to-peer interconnected, and easy to trace, and builds an infrastructure based on a trust mechanism to allow the value of digital assets to circulate efficiently on the Internet, and digital assets occur on the Internet. Transfer of value (transfer from A to B, rather than copying from A to B). We are optimistic about the future of blockchain, but at this stageThe most important achievement of blockchain is the evangelism of ideas. Its emergence allows the market to see the shortcomings of the "Internet of Information" and the trend of the "Internet of Value".

Comments

The relationship between blockchain and Bitcoin

Explaining blockchain, there is no way around Bitcoin. The "invention" of Bitcoin has proven the feasibility of blockchain technology. Bitcoin is not the entirety of blockchain technology, but only one of its applications. Without Bitcoin, it’s possible that blockchain wouldn’t have happened, or at least not anytime soon.

The origin of the word "blockchain" is the "chain of blocks" in the original English version of the Bitcoin white paper. When translated into Chinese, the word "blockchain" is used. As the focus of Bitcoin mining shifts to China, the Chinese market has become the main battlefield for blockchain and Bitcoin. The English domestic market of blockchain is written as "blockchain", which has become a proper noun for the entire blockchain technology in the world. (Noun evolution path: chain of blocks - blockchain - blockchain).

The total amount of Bitcoin is limited, stimulating market speculation

Whether Bitcoin is regarded as a commodity or currency, due to its limited total amount, it stimulates market speculation on Bitcoin. Price, referred to as currency speculation. According to the Bitcoin generation mechanism, the total number of Bitcoins is 21 million.

Bitcoin is the reward after a new block is connected. A block is generated every 10 minutes. A certain number of Bitcoins are rewarded for each block generated. 50 are rewarded in the first four years. The number of Bitcoin rewards is halved every four years, so the total number of Bitcoins is 21 million. Calculation method: {50 X 6 X 24 X 365} X 4 X {1+1/2+. . . . . (1/2)n}=21 million (2.1*107).

Technical principles of blockchain

Blockchain timestamps all transactions through random hashing and merges them into an ever-extending random hash-based, working The proof-of-work chain is used as a transaction record. Unless all the proof-of-work is completed again, the transaction record cannot be changed. There are three steps to form a new block:

1. The miner packages the four parts of the "ledger, the header of the previous block, the timestamp, and the random number sequence X" within a period of time into a block;

2. Through a large number of calculations, the miner adjusts the random number sequence X of the block, generates the composite required hash value, and obtains Bitcoin rewards.

3. Miners connect the new block with the previous block to form a new blockchain.

The number of patents is an important indicator for quantifying blockchain companies at this stage

The global blockchain industry is still in the early stages of development. Most companies are in the conceptual design stage and have no commercialized products. It is difficult for outsiders to objectively evaluate the pros and cons of startups. We believe, the number of blockchain invention patents can reflect the potential of each company, and is an important indicator to distinguish blockchain companies through quantitative means at this stage.

Investment advice: Based on the fundamentals of the company, focus on the value of the Internet in the blockchain era

With the development of the Internet to the present, its main function is to allow information to circulate on the Internet, and information can be copied. propagation method (A is copied to B). The "ledger" constructed by the blockchain is open, transparent, non-tamperable, peer-to-peer interconnected, and easy to trace, and builds an infrastructure based on a trust mechanism to allow the value of digital assets to circulate efficiently on the Internet, and digital assets occur on the Internet. Transfer of value (transfer from A to B, rather than copying from A to B). We are optimistic about the future of blockchain. However, the most important achievement of blockchain at this stage is the evangelism of ideas. Its emergence allows the market to see the shortcomings of the "Internet of Information" and the trend of the "Internet of Value".

Realizing the "Internet of Value" requires large-scale application implementation, not a single technology. At this stage, blockchain is still in its early stages of development. We are optimistic about the future of blockchain, but we do not overestimate the present of blockchain.

In the Hong Kong stock market, there are many companies involved in blockchain. Based on the company's fundamentals and the number of blockchain patents, we recommend Tencent Holdings and Launch Technology, maintaining performance forecasts and recommendation ratings.

Tencent (0700.HK): We expect the company’s revenue growth rate from 2019 to 2020 to be 22% and 22%, and net profit growth rate to 23% and 16%, of which NON-GAAP profit growth rate is 15%, 16%. The EPS corresponding to 2019 and 2020 are HK$10.4 and 12.1, and the target valuation range is maintained at 380 to 400 yuan, corresponding to 31 times to 33 times PE in 2020. The overweight rating is maintained.

Launch Technology (2488.HK): We predict that the company’s revenue growth rate from 2019 to 2020 will be 9.7% and 12.2%, and its net profit growth rate will be 69% and 29%, corresponding to EPS of 0.32, 0.42 Hong Kong dollars. We maintain a "buy rating" and recommend a reasonable valuation of HK$8-9, corresponding to 25-28 times PE in 2019.

Risk warning

1. Blockchain concepts cannot be turned into products. 2. The emergence of new technologies causes the blockchain to be falsified. 3. The profits from the company’s existing business cannot support the long-term R&D investment in blockchain.

Appendix: Blockchain-related companies in Hong Kong stocks

1. Tencent (0700.HK): There is a dedicated blockchain portal (https://trustsql.qq). On October 19, 2019, Tencent released the "2019 Tencent Blockchain White Paper" to provide an overall introduction to Tencent's blockchain. The solution includes the TrustSQL blockchain underlying platform and Tencent Cloud TBaaS, and displays four Tencent blockchain best practices in detail, including blockchain electronic development.tickets, micro-enterprise chain, Zhixin chain and blockchain bank draft. Tencent, which focuses on "connection", continues to develop infrastructure construction in the field of blockchain and promotes the implementation of "blockchain+" industry solutions to promote value connections between enterprises and between enterprises and consumers. Through the "blockchain+" model, we empower the financial and real industries, promote the integration of blockchain and industry, and accelerate the construction of industrial blockchain.

2. China Mobile (0941.HK): On October 15, 2019, the Blockchain Service Network (BSN) press conference and event was hosted by the Information Center, hosted by China Mobile Communications Group Corporation and China UnionPay Co., Ltd., and co-organized by Beijing Hongzao Technology Co., Ltd. The Technology Development Summit Forum was successfully held in Beijing. China Mobile utilizes existing resources, cloud facilities and computing storage facility resources to conduct independent research and development and optimize existing facilities; as a new cornerstone, China Mobile promotes the mutual empowerment between 5G and blockchain.

3. Ping An of China (2318.HK): The number of global blockchain invention patent applications disclosed in 2018 was 84, ranking 7th in the world. Ping An relies on blockchain technology to improve the intelligent level of urban management. Ping An applies blockchain to medical health, targeted poverty alleviation, social welfare, etc.

5. ZhongAn Online (6060.HK): Anlian Cloud, a professional ecological cloud service platform based on artificial intelligence, blockchain and cryptography. The platform uses Zhongan Chain independently developed by Zhongan as its underlying infrastructure and also develops electronic signing , digital identity, distributed encrypted storage, certificate storage, traceability and other nearly 10 vertical applications.

6. Kingsoft (3888.HK): It was the first to implement Game + Blockchain applications and solutions. Currently, the game cloud business is exploring the application of blockchain technology and accelerating the expansion of the game ecosystem. In the first half of 2018, Kingsoft Cloud took the lead in launching the "project-X" plan for the entire ecosystem of blockchain games, realizing a project consisting of blockchain platform infrastructure construction, blockchain underlying technology, and blockchain game development, operation, and distribution. Complete blockchain game ecological structure.

7. HC Group (2280.HK): On January 31, 2018, HC Group announced that its first application scenario based on blockchain was officially launched. The cooperation framework agreement signed with Joyvio Technology will start from the agricultural field to build the HC Group District. Blockchain products use the advantages of industrial big data and blockchain application scenarios to expand the modern agricultural blockchain market.

8. Launch Technology (2488.HK): The company is China's earliest leading high-tech enterprise dedicated to the research and development and production of automobile diagnosis, testing, maintenance, and tire equipment. As a leader in the Internet of Vehicles industry, the company is deeply involved in exploring solutions for the integration and monetization of automotive big data. In 2018, the company ranked fifth in the world in terms of the number of blockchain-related patent applications, standing at the forefront of new blockchain technologies. The company has combined blockchain technology with industry applications and developed the "Super Car Chain Project"" series of products, a 4G vehicle data collection terminal with blockchain technology - GTBOX-I has been customized for the Internet of Vehicles industry. Launch Technology has publicly stated its position many times: No matter whether it is in decline or prosperity, it refuses to get involved in digital currencies and ICOs. Neither public nor private placement, focusing on mining the value of the chain.

9. Meitu Company (1357.HK): The vision of Meitu Blockchain is to create a decentralized, secure encryption for users Identity Pass: Meitu Intelligent Passport (MIP - Meitu Intelligent Passport), thereby connecting the digital world and the real world, creating a trusted blockchain environment. On the one hand, Meitu Intelligent Passport (MIP) allows users to anchor The assets of various applications are scattered on the blockchain, and are verified by facial recognition AI, making it more convenient and safe to use various applications and get privacy protection; on the other hand, Meitu Intelligent Pass (MIP) also allows some people who need strong Verified services such as medical and education can more effectively use blockchain to serve users.

10. Gome Retail (0493.HK): On April 14, 2018, according to Gome Retail, Gome has entered the era of comprehensive digitalization. Operating digital stores is Gome's "No. 1 project", and the company has been doing research on blockchain technology and decentralized technology. The relevant person in charge of Gome's retail said: Gome's shared retail business model, as well as employees The Meidian retail strategy is very consistent with the decentralized model system of the blockchain, and the employee Meidian is also a new channel that Gome hopes to build.

(Article source: Guosen Securities)

Solemn statement: Released The purpose of this information is to spread more information and has nothing to do with the position of this site.

Ⅸ What is blockchain and how to understand blockchain applications

Blockchain is a distributed data storage and point-to-point transmission , consensus mechanism, encryption algorithm and other new application models of computer technology. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system.
Blockchain is Bitcoin An important concept of The information of currency network transactions is used to verify the validity of the information (anti-counterfeiting) and generate the next block.
Let’s talk about the social or economic significance of the blockchain. Many previous technologies were actually dedicated to "Productivity", such as artificial intelligence, is an improvement in productivity. Blockchain has greatly improved production relations and is dedicated to production relations. So why do you say this?
Because of the so-called Production relations are actually how business is done between people and business partners. And these things are originallyIt is all in the process of people's mutual cognition, and no special procedures are used to program or quantify it.
For example, if you and I are good friends now, we can do business. If someone provokes our relationship and we are no longer good friends, we will not do business. Even if we can make money by doing business, we will not do it. , because everyone no longer has any trust in each other.
As for the blockchain, it is actually because the data has been certified by various nodes and backed up at the same time, so my data is as authentic as possible and cannot be tampered with. So in this case, you believe my data, On this basis, you can create a program, and then program the "production relations" of what kind of business contracts and business cooperation this data can be used for. In this way, everyone believes in the data and the program compiled by the algorithm. And because you believe in the data and the program, you can develop various APPs based on this program. These APPs are the relationship of production and what kind of business you are going to do. This is: Blockchain is actually a reconstruction of "production relations".