区块链技术和区块链工程区别?,区块链技术和区块链工程

⑴Which one of blockchain technology and blockchain applications is more worthy of our special research and development

The so-called blockchain technology, referred to as BT (Blockchain technology), also Known as distributed ledger technology, it is an Internet database technology that is characterized by decentralization, openness and transparency, allowing everyone to participate in database records.

Blockchain applications:

1. Financial sector: mainly to reduce transaction costs and reduce cross-organization transaction risks. Blockchain applications in this field will mature the fastest, and banks and financial trading institutions will be the main promoters.

Financial Blockchain

Since the beginning of human society, financial transactions have been an essential economic activity. The differences in transaction roles and contents reflect different production relations. Through transactions, social efficiency can be optimized and value maximized. The development of human society is inseparable from the evolution of transaction forms. It can be seen how important transaction is in human society. Transactions essentially exchange ownership of value. Nowadays, in order to complete transactions (such as the ownership of houses and vehicles), some intermediate links are often required, especially the role of intermediary guarantees. This is because there is often insufficient trust between the two parties in the transaction, and it is not easy to prove the ownership of value, and often the value of each other cannot be directly exchanged. Reasonable intermediary guarantees ensure the normal operation of transactions and improve the efficiency of economic activities. However, existing third-party intermediary mechanisms often have shortcomings such as high costs, long time cycles, complex processes, and error-prone. It is precisely because of these that financial services have become one of the hottest application areas of blockchain. Blockchain technology can provide effective and reliable proof of ownership and a fairly strong intermediary guarantee mechanism for financial services. The areas involved in financial services include currency, securities, insurance, donations, etc.

2. Credit reporting and ownership management: This is the dream of both large social platforms and insurance companies. Currently, there is a lack of sufficient data sources, reliable platform support and effective data analysis and management. The threshold for entrepreneurship in this field is extremely high and requires top-down promotion. Because anything that needs to deal with the government has never been easy to start immediately.

Credit management is a huge potential market, said to exceed 100 billion (Ping An Securities report, Wells Fargo report), and it is also one of the most promising directions for big data applications. . At present, a large amount of effective data related to credit reporting is mainly concentrated in the hands of a few institutions. Because this data is too sensitive and is the lifeblood of business, it is often strictly protected, thus forming a high industry threshold. Although a large number of Internet companies (the most successful one should be Facebook) have tried to obtain massive user information from various dimensions, from the perspective of credit reporting, these data still have several problems.

•Insufficient amount of data: The larger the amount of data, the higher the value that can be obtained, and there is a need for effective value from data.limit. The amount of data below the lower limit cannot produce effective value;

•Poor relevance: The most core data is often the most sensitive. In today's highly sensitive world of privacy, users do not want to expose too much data. to a third party, so the company actually obtains very few effective components in the data;

•Insufficient timeliness: The user data that companies can obtain from the public is often out of date, and even contains false information, which is harmful to Seriously disrupts the credibility of the correlation analysis.

The blockchain has the characteristics that it cannot be tampered with and cannot be repudiated. At the same time, blockchain will make it possible to provide highly relevant data on an unprecedented scale that can be accurately located in time and space and strictly linked to users. Therefore, credit management based on data provided by blockchain will greatly improve the accuracy of credit assessment and reduce the cost of assessment. In addition, unlike traditional audits that rely on manual review, blockchain technology relies entirely on mathematical results, and the credit mechanism based on blockchain will naturally have stability and neutrality. Including IDG, Tencent, Ernst & Young, PricewaterhouseCoopers, etc. have all invested in or entered the field of blockchain-based credit management, especially application scenarios related to insurance and mutual aid economy.

3. Resource sharing: Companies represented by airbnb will welcome such applications, which will greatly reduce management costs. The threshold for starting a business in this field is low, the theme is concentrated, and it will be popular among investors.

In the era of big data, value comes from data mining. The more dimensions and volume of data, the higher the potential value. The most troublesome issues have always been how to evaluate the value of data, how to use data for exchange and transactions, and how to prevent valuable data from being leaked without permission. Blockchain technology offers the potential to solve these problems. Using the unified ledger composed of blockchain, the flow of data between multiple parties will be tracked and managed in real time, and through the control of access rights, the management cost of the data sharing process can be effectively reduced.

4. Investment management: Whether public or private funds, blockchain technology can be used to reduce management costs and manage risks. Although there are attempts to test the waters like DAO, it is cautious to believe that the demand in this field is not yet mature. However, Xiaoyao has discovered that major startups in China are beginning to test the waters in this field, hoping for a major breakthrough.

In international trade activities, buyers and sellers may not trust each other. Therefore, two banks are needed as guarantors for both the buyer and the seller, to collect and deliver documents on their behalf, and to replace commercial credit with bank credit. Blockchain can provide a common ledger for participants in letter of credit transactions, allowing banks and other participants to have confirmed common transaction records and perform accordingly, thereby reducing risks and costs. Crowdfunding management represented by DAO (Decentralized Autonomous Organization), DAO has set a record of the highest financing in history, exceeding 160 million US dollars.

5. Internet of Things and Supply Chain: The Internet of Things is a very suitable field, and a large number of applications will appear in the short term, especially in specific scenarios such as leasing and logistics. However, the development limitations of the Internet of Things will make it difficult to see large-scale applications in the short term.

The supply chain industry often involves many entities, including logistics, capital flow, information flow, etc., and there is a large amount of complex collaboration and communication between these entities. Under the traditional model, different entities keep their own supply chain information, resulting in a serious lack of transparency, resulting in high time and money costs. Moreover, once problems arise (false claims, counterfeit goods, etc.), it is difficult to trace and deal with them. Through the blockchain, all parties can obtain a transparent and reliable unified information platform, which can check the status in real time, reduce logistics costs, and trace the entire process of production and transportation of items, thus improving the efficiency of supply chain management. When disputes arise, proof and tracing have become clearer and easier. This field is considered a promising application direction of blockchain. IBM has been investing in research and development in the field of IoT for decades and is currently exploring the use of blockchain technology to reduce the cost of IoT applications.

Blockchain begins to be applied after the technology is first available, such as Huixin Cloud Platform: only when the platform is first available, can product managers enter the platform to carry out development, so technology and applications should work together progress.

The application of blockchain technology is different in different industries, and the functions and effects obtained are also different. Let’s take the field of credit system as an example. Because the leakage of personal information will cause great harm to the information person, making him suffer from harassment. What is even more frightening is the leakage of personal information, which usually involves the theft and illegal trafficking of tens of thousands of personal information, and even the use of formal data trading institutions to steal data.

With the rise of blockchain technology, the encryption of blockchain technology can provide solutions for the protection of personal information. Blockchain technology can store personal information in a distributed manner and avoid the security risks faced by a single server.

As one of the icebreakers in blockchain technology research, Jinwowo Network Technology has conducted in-depth research and application of blockchain technology. Jinwowo's big data service with blockchain as the underlying layer can eliminate illegal reselling of data and re-establish data circulation rules from the four aspects of data storage, data analysis, data tracking and data security.

⑵ What is blockchain technology? What exactly is blockchain? A chain data structure composed of sequential 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, and uses cryptography to ensure data transmission and access. Security, programming and operation using smart contracts composed of automated script codeA new distributed infrastructure and computing method for data.

[Infrastructure]

Generally speaking, the blockchain system consists of data layer, network layer, consensus layer, incentive layer, contract layer and application layer composition. Among them, the data layer encapsulates the underlying data blocks and related basic data and basic algorithms such as data encryption and timestamps; the network layer includes distributed networking mechanisms, data dissemination mechanisms, and data verification mechanisms; the consensus layer mainly encapsulates network nodes Various consensus algorithms; the incentive layer integrates economic factors into the blockchain technology system, mainly including the issuance mechanism and distribution mechanism of economic incentives; the contract layer mainly encapsulates various scripts, algorithms and smart contracts, and is the core of the blockchain The basis of programmable features; the application layer encapsulates various application scenarios and cases of the blockchain. In this model, the chain block structure based on timestamps, the consensus mechanism of distributed nodes, economic incentives based on consensus computing power, and flexible programmable smart contracts are the most representative innovations of blockchain technology.

Extended information:

[Blockchain core technology]

Blockchain mainly solves the trust and security issues of transactions, so it addresses this issue Four technological innovations:

1. Distributed ledger means that transaction accounting is completed by multiple nodes distributed in different places, and each node records a complete account, so they all Can participate in supervising the legality of transactions and can also jointly testify for them.

The uniqueness of blockchain's distributed storage is mainly reflected in two aspects: First, each node of the blockchain stores complete data according to the block chain structure. Traditional distributed storage generally stores The data is divided into multiple parts for storage according to certain rules. Second, the storage of each node in the blockchain is independent and has equal status, relying on the consensus mechanism to ensure the consistency of storage, while traditional distributed storage generally synchronizes data to other backup nodes through the central node.

No node can record ledger data independently, thus avoiding the possibility of a single bookkeeper being controlled or bribed to record false accounts. Also because there are enough accounting nodes, theoretically speaking, the accounts will not be lost unless all nodes are destroyed, thereby ensuring the security of the accounting data.

2. Asymmetric encryption and authorization technology. Transaction information stored on the blockchain is public, but account identity information is highly encrypted and can only be accessed with authorization from the data owner. , thus ensuring data security and personal privacy.

3. The consensus mechanism is how all accounting nodes reach a consensus to determine the validity of a record. This is both a means of identification and a means of preventing tampering. Blockchain proposes four different consensus mechanisms, which are suitable for different application scenarios and strike a balance between efficiency and security.

The consensus mechanism of the blockchain has the characteristics of "the minority obeys the majority" and "everyone is equal". Among them, "the minority obeys the majority" does not entirely refer to the number of nodes, but also to the number of nodes.So computing power, number of shares, or other characteristics that computers can compare to. "Everyone is equal" means that when a node meets the conditions, all nodes have the right to give priority to the consensus result, which will be directly recognized by other nodes and may eventually become the final consensus result.

4. Smart contracts. Smart contracts are based on these trustworthy and non-tamperable data and can automatically execute some predefined rules and terms. Take insurance as an example. If everyone's information (including medical information and risk occurrence information) is true and trustworthy, it will be easy to automate claims settlement in some standardized insurance products.

In the daily business of insurance companies, although transactions are not as frequent as those in the banking and securities industries, the reliance on trusted data continues unabated. Therefore, the author believes that using blockchain technology from the perspective of data management can effectively help insurance companies improve their risk management capabilities. Specifically speaking, it is mainly divided into risk management of policyholders and risk supervision of insurance companies.

Blockchain-Network

⑶ What is blockchain technology? What exactly is blockchain? What is blockchain

1. The so-called blockchain technology, referred to as BT (Blockchain technology), also known as distributed ledger technology, is an Internet database technology that is characterized by decentralization, openness and transparency, allowing everyone to participate in database records.

Explain in layman’s terms: If we assume that the database is a ledger, reading and writing the database can be regarded as an accounting behavior. The principle of blockchain technology is to find out the accounting information within a period of time. The fastest and best person will keep accounts, and then send this page of information to everyone else in the entire system.

2. Blockchain is a new application model of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies.

Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of cryptographic methods. Each data block generated by the association contains a batch of Bitcoin network transaction information, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block.

(3) Blockchain technology and extended reading on blockchain:

The Blockchain Lushi Chain system consists of data layer, network layer, and consensus It consists of layer, incentive layer, contract layer and application layer. Among them, the data layer encapsulates the underlying data blocks and related basic data and basic algorithms such as data encryption and timestamps; the network layer includes distributed networking mechanisms, data dissemination mechanisms, and data verification mechanisms; the consensus layer mainly encapsulates network nodes Various consensus algorithms.

The incentive layer integrates economic factors into the blockchain technology system, mainly including the issuance mechanism and distribution mechanism of economic incentives; the contract layer mainly encapsulates various scripts, algorithms and smart contracts.Contract is the basis of the programmable features of the blockchain; the application layer encapsulates various application scenarios and cases of the blockchain.

⑷ What is blockchain technology? What exactly is blockchain?

Blockchain technology is one of the top ten typical judicial technology applications on the Internet. Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm.

Blockchain is an important concept of Bitcoin. In fact, it is a decentralized database. Blockchain, as the underlying technology of Bitcoin, is a series of data blocks generated using cryptographic methods. 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.

Blockchain originated from Bitcoin. On November 1, 2008, a person who called himself Satoshi Nakamoto published the article "Bitcoin: A Peer-to-Peer Electronic Cash System", which elaborated on P2P network technology, encryption technology, timestamp technology, and block technology. The concept of electronic cash system framework such as chain technology marks the birth of Bitcoin.

(4) Blockchain technology and extended reading on blockchain:

The birth of blockchain:

The concept of blockchain was first proposed by Satoshi Nakamoto in 2008. In the following years, blockchain became the core component of the electronic currency Bitcoin: a public account for all transactions. By using peer-to-peer networks and distributed timestamp servers, blockchain databases can be autonomously managed.

The blockchain invented for Bitcoin made it the first digital currency to solve the problem of repeated consumption. Bitcoin design has become a source of inspiration for other applications. On December 20, 2016, the Digital Currency Alliance-China FinTech Digital Currency Alliance and FinTech Research Institute were officially established.

⑸ What is blockchain_What is blockchain technology

What is blockchain

Blockchain has become quite popular recently. People will associate Bitcoin with blockchain, but blockchain is blockchain and Bitcoin is Bitcoin. The two are completely different. Although many people have heard of blockchain, they do not understand blockchain. What is a chain, and what exactly does blockchain mean?

Blockchain refers to a technical solution that collectively maintains a reliable database through decentralization and trustlessness. Many people still don’t understand decentralization. Decentralization means that 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. When it comes to blockchain, everyone will mention Bitcoin, because blockchain is the underlying technology of Bitcoin and is mainly used in Bitcoin. Blockchain is like a large database ledger that records all transaction records. , and the updated accounting content will be sent to all system class users.

BlockWhat is blockchain technology

In layman’s terms, blockchain technology is a way for all people to participate in accounting. All systems have a corresponding database. If the database is compared to an account book, then the person who keeps the accounts is very important. These databases currently keep their own accounts. For example, Alibaba is responsible for the Taobao account book, and WeChat is responsible for the accounting. The ledger is kept by Tencent. But in the blockchain system, everyone has the opportunity to participate in accounting. The system will select the person with the best and fastest accounting, record his content on the ledger, and send the content of the ledger to everyone in the system. Personal backup allows everyone to have the same ledger, ensuring that the accounting process is transparent. There is no central ledger, which greatly improves security. In the past, it was difficult for two parties who did not trust each other to conduct transactions. For the security of transactions, a third-party platform was needed, and blockchain technology solved the credit problem of user transactions. People can complete transactions without a third-party intermediary. Bitcoin The underlying technology of currency transactions uses blockchain technology, so many people associate Bitcoin with blockchain. It is precisely because Bitcoin has been very stable for many years that people pay attention to its underlying technology. People abstract the underlying technology of Bitcoin and call it blockchain technology.

⑹ What is blockchain technology?

1. Blockchain technology

In a narrow sense, blockchain is a Time sequence combines data blocks into a chained data structure in a sequential manner, and is cryptographically guaranteed to be a 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, and uses cryptography to ensure data transmission and access. It is a new distributed infrastructure and computing method that uses smart contracts composed of automated script codes to program and operate data securely.

2. The meaning of blockchain

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

(6) Blockchain technology and extended reading on blockchain

Three parts of the basics of blockchain technology

1 , a network that transmits information between point-to-point, referred to as P2P network. With this network, any node can "broadcast" its transaction information to the network and obtain the contents of the general ledger.

2. Cryptotechnology. A combination of "public key" and "private key" is adopted to ensure the security of the trading account.

3. Consensus mechanism. That is, all nodes in the network need to reach a consensus on the blockchain algorithm, and nodes do not need to trust each other. The information calculated through the algorithm can ensure reliable transactions and secure data storage. At the same time, every new block generated by a node needs to be jointly recognized by more than 51% of the entire network before it can be added to the blockchain of the entire network, forming an irreversibleOne of the historical records of the tampered ledger.