区块链平台怎么建设的,区块链平台怎么建设好

如今，区块链技术已经成为一种全新的技术，它不仅能够改变传统的金融体系，还可以构建新的区块链平台。那么，区块链平台怎么建设呢？今天，我们就来介绍三个关键词：区块链开发、技术架构和账本维护，来帮助大家更好的构建区块链平台。

区块链开发是构建区块链平台的基础，它是一种技术，它可以让开发者创建分布式应用程序（DApp）。通过使用区块链开发，开发者可以创建一个安全、可信任的平台，可以在这个平台上进行交易、转账、投票等操作。区块链开发一般使用比特币、以太坊等区块链技术，它们提供了一系列的开发工具，可以帮助开发者更好地构建区块链平台。

技术架构是构建区块链平台的重要组成部分，它是一种分布式架构，可以帮助开发者实现数据的安全存储和共享。技术架构采用分布式计算技术，可以让数据在网络中安全地传播和存储，从而避免数据泄露的风险。此外，技术架构还可以支持大型的用户群体，并可以支持多种不同的操作系统，从而能够满足不同用户的需求。

账本维护是构建区块链平台的关键，它是一种分布式账本技术，可以帮助开发者实现数据的可靠性和安全性。账本维护可以保证数据的完整性和可靠性，可以有效地防止数据被篡改，并可以支持多种不同的数据类型，从而可以满足不同的应用场景。此外，账本维护还可以提供可靠的安全机制，可以有效地保护用户的隐私，从而使用户可以安心地使用区块链平台。

以上就是区块链平台怎么建设的三个关键词介绍，区块链开发、技术架构和账本维护，它们是构建区块链平台的基础，可以帮助开发者构建可靠、安全的区块链平台，让用户更安心地使用。

请查看相关英文文档

⑴ How to build a blockchain website

Websites are no longer mysterious and no longer a high-tech job. Ordinary users can also easily build relatively professional websites. Let me briefly introduce to you some procedures and precautions for building a personal website.
1. Domain Name
If you want people to visit your website, a domain name is essential. The domain name should be as short as possible and as easy to remember as possible, such as the .top domain name. Of course, there are not many domain names that are easy to remember and have characteristics. You need to consider this yourself, as long as you feel that there is a certain pattern or it is easy for users to remember. That’s it.
2. Space
To build a website, you must have a space, which is a place to store the website. For individual users, it is recommended to purchase a virtual host. When purchasing a web host, look at its service, speed, response time, etc. Generally, you can choose a service provider with a certain reputation.
Note: Domain name and space are currently good choices for domestic service providers such as Alibaba Cloud, Western Digital, and China Data.
3. Website program
Of course, the website program should be ready-made, because individuals do not need to compile a website program from scratch, and they do not have the ability. Nowadays, there are ready-made website management systems on the Internet. There are many such systems. You can choose based on your own comprehensive trial.
When choosing a website program, its versatility and secondary development must also be taken into consideration. For those that are not very versatile and are not conducive to the second phase of development, although they are powerful, they are not recommended because it will be very troublesome when the website needs to be designed with personalized functions after it reaches a certain scale. In addition, try to choose asp (asp.net) for programs. PHP, JSP, etc. are not particularly popular in China. Try to choose asp.net between asp and asp.net. After all, it is based on the .net architecture and is the development trend.
4. Website Design
After selecting the website program, you need to design the website according to your own needs. Generally speaking, it is best if there are professional artists and programmers to make modifications. However, individual webmasters may not necessarily have this condition and can choose intelligent website building from service providers.

⑵ How to use blockchain to build a commodity trading co-governance platform

As blockchain will bring about earth-shaking changes in the next time, those who have the opportunity will have excellent opportunities. The Frankenstein-like financial system is naturally running out of opportunities. Now the world's financial services industry is full of all kinds of problems. It is built on a technology platform decades ago and looks outdated. In contrast, With the growth of cash, the rapid digital world has become very sudden, showing its slow and unreliable side from time to time. It has left billions of people without access to even the most basic financial tools outside the system. In addition, the highly centralized nature also faces the risk of data leakage, hacking, and total downtime, not to mention that its exclusive position naturally tends to maintain the status quo and inhibit innovation. Blockchain not only solves these problemsA sharp tool can also bring a lot of innovation, allowing entrepreneurs to find more new tools to create business value on this platform.

Six reasons why blockchain can have a profound impact on the financial services industry, break the existing exclusive structure, allow individuals and corporate organizations to have real opportunities to choose, and create a managed business value.

1. Efficiency of proof. For the first time in history, humans can complete commercial transactions without knowing each other and without a basis for mutual trust.

2. Cost. The network architecture of the blockchain completes the clearing and settlement work through point-to-point digital transfer, and these actions are continuously performed so that the ledger information is always maintained in the latest state.

3. Efficiency. Now it takes us three to seven days to complete the remittance and two to three days to complete the stock delivery. When applying for a bank loan, it usually takes a stifling 23 days to get it approved.

4. Risk management. Blockchain can mitigate many financial risks; checkout risk is just one of them. The other is counterparty risk, and the most important is systemic risk.

5. Value innovation. The purpose of establishing the Bitcoin blockchain is simple. It does not include other assets except Bitcoin. However, since the blockchain adopts the original code method, it also provides room for modification. Some people who pursue innovation are developing other projects. Alternative coins and blockchain scum must first compete with Bitcoin.

6. Open source. The financial services industry is a system that has been formed by stacking layers of early technologies on top of each other. Now it is crumbling. It is very difficult to promote change in this field now, because every time we improve this kind of engineering, we must go back. Blockchain is an open source technology. You can continue to pursue innovation and keep testing back and forth until you can do it. Achieve satisfactory results on the consensus of network architecture.

The above six advantages. It can change not only payment methods, but also securities, industrial investment, bank accounting and verification work. Venture capital, insurance companies, risk management, retail banking and other pillars that support the industry are also likely to keep up with the pace of change.

⑶ How enterprises can build their own blockchain

Hello, thank you!

How can enterprises build their own blockchain?

With the popularity of various currency transactions, the development of the exchange industry has been driven. So as a novice who wants to cross industries, how to establish a blockchain exchange development company? Chainsoft Network summarizes the following points for you.

Please click to enter the picture description

1. Determine the operating scope of the exchange development company

Determine the company's The scope of operations is very important, as it determines whether the company has the potential to be profitable. Relevant laws and regulations vary from region to region every day, so the first step is to understand the local laws and regulations, and obtain the necessary licenses and approvals to open a Bitcoin exchange according to your scope of operations, to avoid violating local laws and regulations, and bring come unnecessarytrouble.

2. Check the country’s regulations and compliance requirements

Almost all governments require entities involved in currency exchange businesses to comply with Know Your Customer (KYC) norms. KYC is the process by which businesses verify the identities of their customers through government-issued ID cards or passports. The main purpose here is to prevent money laundering. Make sure to comply with your country’s KYC norms and integrate suitable customer verification procedures in your exchange.

3. Work with a bank or payment processor

You need to work with a bank or payment provider to process payments via fiat currency. You can choose a trustworthy bank with extensive online facilities.

4. Create liquidity on your exchange

Any exchange needs liquidity to operate successfully. Customers are hesitant to place an order or even deposit funds unless they see complete order and trading activity. New trading naturally encounters liquidity issues.

5. Ensure high-level security of trading and customer data

Any exchange development company needs top-notch security to ensure exchange operators and traders’ funds are maintained Safety. This should also apply to your customers’ private data, including their KYC details and bank account information. The Gox breach, a security flaw that went unnoticed for years, resulted in the theft of nearly 1% of all Bitcoins in circulation at the time. According to Chainsoft Network, one-third of all Bitcoin exchanges were hacked between 2009 and 2019. Therefore security must be your top priority in trading.

6. Establish customer support channels

Finally, customer support is another important component of a successful exchange. Staff are needed to approve KYC requests, answer customer complaints, process deposits and withdraw fiat currency, etc. A fast customer support mechanism ensures that your customers start trading from the day they sign up and generate revenue for your exchange.

I hope this helps you solve related problems. For more details, please feel free to consult and discuss!

⑷ BIM+blockchain makes urban construction smarter

In this article, we talk about the combination and application of blockchain and the construction industry.

Before starting the text, let me first explain the concept of BIM.

BIM (Building Information Modeling) Building information modeling. The U.S. National BIM Standard explains BIM as follows:

(1) Use digital methods to express the physical and functional characteristics of a facility.

(2) A shared knowledge resource.

(3) The process of sharing information related to this facility and providing reliable basis for all countermeasures throughout the life cycle of the facility.

(4) In different stages of the construction project, each participant embeds, extracts, updates and modifies information in the information model to support and reflect the collaborative work of their respective responsibilities.

The construction industry is one of the largest industries in the world today and will remain a key driver of world economic growth in the future.

The construction industry plays an important role in my country's national economy. According to data from the National Bureau of Statistics, my country's GDP in 2020 was 101 trillion yuan, of which the total output value of the construction industry was 26 trillion yuan, accounting for more than 25%.

The construction industry is an ancient industry. As early as 2,000 years ago, the ancients built magnificent projects such as the Great Wall and the pyramids of ancient Egypt. However, since its development, the overall management level and efficiency of the construction industry are still very low. The main reasons can probably be attributed to the following five points:

1) The one-time nature of the project;

2) The looseness and temporary nature of the organization;

3) The fragmentation of management;

4) The multi-party nature and inefficiency of cooperation;

5) Production Destandardization and deindustrialization of processes.

The problems caused by the above reasons are also obvious:

1) Lack of trust. Due to the one-time nature of the project, the temporary nature of the organization, and the multi-party nature of cooperation, trust is inevitable Missing.

2) Low efficiency. Due to the loose and temporary nature of the organization, the non-standardization and non-industrialization of the production process, high consumption and low efficiency, the average profit level of construction companies in the entire construction industry is only about 3%

p>

3) Risk controllability is weak. Due to the lack of a systematic standardized management system and fragmented management, project delays, design changes, and cost claims are inevitable for almost every project.

Domestic building informatization has gone through three stages and is currently in the third stage:

The first stage: design informatization, The "off the drawing board" project in the 1990s promoted the popularization of domestic CAD technology applications;

The second stage: enterprise information management, in 2005 computer-aided management problem solving realized the informatization of project and enterprise management;

The third stage: full life cycle informatization. In 2015, the application of BIM technology assisted the integration of full life cycle information in the construction industry.

1. Why should BIM be implemented in the construction field?

The Ministry of Housing and Urban-Rural Development has a detailed explanation of the significance of BIM application in the "Notice of the Ministry of Housing and Urban-Rural Development on Issuing Guiding Opinions on Promoting the Application of Building Information Models". The guiding opinions point out that: BIM should provide technical support for the connection of the industrial chain, industrialized construction and prosperous architectural creation. . In other words, BIM is the technical foundation for the industrial transformation of the construction industry.

2. What can BIM do specifically?

1) Realize data sharing among all participants in the whole life cycle of the building based on the same multi-dimensional building information model;

2) Support the engineering environment, energy consumption, economy, quality, Analysis, inspection and simulation of safety and other aspects;

3) Provide a basis for program optimization and scientific decision-making in the entire project process;

4) Support the collaborative work of various disciplines and the virtualization of the project Construction and refined management.

3. The significance of industrialization of construction

1) Industrially produced materials and prefabricated construction methods make it easier to form a standardized system to ensure product quality;

2) Most components of prefabricated buildings are completed in the factory, and the overall delivery is 30% to 50% faster than traditional buildings;

3) Prefabricated building sites are mainly dry operations, which can effectively reduce Energy consumption and environmental pollution, low carbon and environmental protection;

4) Prefabricated buildings can also be reused due to their dismantling characteristics;

5) There is room for reduction in prefabricated construction costs For now, it is much higher than traditional buildings, with lower post-operation and maintenance costs and greater cost advantages throughout the life cycle.

The transformation of construction industrialization has become a national strategy

In recent years, the Ministry of Housing and Urban-Rural Development and other departments have successively introduced a number of important policies to promote the industrialization, digitalization, green construction, and intelligent construction of the construction industry.

In March 2021, the State Council issued the "Outline of the 14th Five-Year Plan and Long-term Goals for 2035". The outline clearly proposes to develop intelligent construction, promote green building materials, prefabricated buildings and steel structure residences, and build low-cost Development goals of carbon cities.

4. The importance of BIM digitalization in the construction industry

Vigorously develop the industrialization, digitalization, and intelligent upgrading of construction, increase the application of intelligent construction in all aspects of engineering construction, and realize the transformation and upgrading of the construction industry It is the strategic goal of the construction industry and even the country in the past 10 to 20 years. Therefore, BIM digital technology will play a fundamental and important role in the transformation and upgrading of the construction industry.

The direction of construction industrialization transformation is standardization + factoryization + assembly, BIM solves the problem of digital integration and visualization in this process.

Although BIM is an indispensable technology in the industrial transformation process of the construction industry, it cannot effectively solve the problems of production relations, such as trust and efficiency between collaborative parties, and fragmented management under complex systems. And other issues.

Solving trust, collaboration, efficiency, and fragmented management under complex systems are precisely the natural advantages of blockchain technology, and can well complement BIM technology.

Therefore we say: Industrialized production (BIM support) + digital collaboration (blockchain support) + big data decision-making (AI technology) = smart construction

We consider the entire life cycle of the building It is divided into three stages: planning and design, construction, and operation and maintenance to illustrate.

1. Planning and design stage

Cross-department collaborative approval will be the main scenario for the application of blockchain technology.

The planning and design stage is characterized by many administrative supervision roles and collaborative approval procedures. The decentralized features of blockchain technology are exactly suitable for such scenarios and can greatly improve the efficiency of collaborative approval (multiple places The government has started a pilot project for a blockchain government approval system).

We assume that the regulatory units in the planning and design stage include the National Development and Reform Commission, Land and Resources, Transportation, Housing and Urban-Rural Development, Water Conservancy, etc. In addition, relevant units include construction units, planning and design and other consulting units, and they all have their names on the blockchain. Each node has its own information management system.

When the consulting unit creates the first-stage BIM conceptual model (for example, suitable for project proposals), and loads various economic indicators such as GIS information, scale, land occupation, cost, etc., the model data is uploaded to the area. Blockchain.

After the BIM conceptual model and project proposal are confirmed by the construction unit, the construction unit will initiate the approval procedures with the National Development and Reform Commission, and the blockchain smart contract will automatically initiate all review processes.

The National Development and Reform Commission accesses the BIM conceptual model on the blockchain through the key, loads the BIM model and GIS information of the surrounding infrastructure when necessary, analyzes whether the project complies with the urban development master plan and the feasibility of the project, and will review and approve it The results are uploaded to the blockchain, and the smart contract automatically sends the data file of the approval results back to the construction unit.

Similarly, the construction unit starts the land pre-examination related procedures, the smart contract is activated, and the land department accesses the BIM land occupation model on the blockchain through the key, conducts the review, and uploads the approval results to the blockchain. The smart contract sends the data file of the approval result back to the construction unit.

At the same time, any regulatory department can use the key to verify the authenticity of the approval results of the National Development and Reform Commission, Land and Resources and other departments.

WithSubsequent feasibility studies, preliminary designs, and construction drawing designs continue to improve the model. The National Development and Reform Commission, land, transportation, housing and construction and other industry regulatory authorities can access the BIM model data of the project on the blockchain at any time through the key, and monitor the project in real time. There is no illegal design or construction.

All approval processes run automatically online, but they are no longer based on a centralized platform, but on decentralized blockchain technology, which can effectively reduce collaboration costs and improve collaboration efficiency. and ensure data privacy and security.

2. Construction stage

Similarly, we assume that construction units, supervision units and other third-party consulting agencies also have their own nodes on the blockchain and their own information systems. , then they can all access the BIM model data of the project on the blockchain through the key.

We simply divide the construction process into planning, procurement, production, acceptance, and payment. And it is assumed that the model and the WBS decomposition structure of the construction stage are in one-to-one correspondence.

· Planning link:

The contractor can prepare the plan through the Office series of Projec software, or the domestic Glodon Zebra, and import the plan data file into the BIM on the blockchain Model, BIM model has 4D progress visualization attributes (such as can be displayed by InfraWorks of Autodesk series), and the data can also include resources, funds and other plans. All participating parties can simultaneously carry out project management based on the BIM model.

· Procurement link:

The construction industry has a highly decentralized and complex supply chain system. The cooperation between suppliers and contractors may be temporary or one-time, so trust is relatively low. Difficult to establish, low collaboration efficiency.

Let’s first talk about how blockchain solves the trust problem in transactions.

Blockchain uses smart contracts to complete transactions. For example, for the buyer, before the transaction, the smart contract first detects whether the balance of the buyer's digital wallet (central bank digital renminbi) (or bank credit or guarantee limit) is satisfied. If the transaction object is satisfied, it will be locked. When the buyer accepts and signs for the seller's goods, the smart contract will automatically transfer the locked digital renminbi point-to-point to the seller's digital wallet.

Therefore, what the blockchain solves is not the problem of mutual trust between buyers and sellers, but trust is no longer a problem.

Sand and gravel materials are used in large quantities in construction projects, and are purchased frequently and from scattered sources. They are one of the most difficult materials to control in the building materials supply chain.

We assume that the contractor has installed a camera in the silo, and the contractor's procurement system detects through the camera that the remaining material in the silo is lower than the predetermined value.Threshold (computer vision recognition technology), the system calls the planning data (the data imported by the Project into the BIM model) and finds that the future usage demand is greater than the total capacity of the silo, then the smart contract is started to automatically complete the sand and gravel order, and even from multiple suppliers Choose the one with the lowest price.

Sand and gravel suppliers do not need to join any system. They only need to create their own accounts on the blockchain node to complete automated transaction collaboration with contractors.

During the transportation process, the supplier uploads the GPS location of the transportation vehicle or ship to the blockchain in real time through IOT hardware. The contractor's procurement system can track the location of the goods in real time through the key. The system can Analyze (search algorithm) whether the material delivery time has an impact on the production plan, so that the smart contract can be restarted for remediation.

The purchase batch and arrival time of each batch of materials can be written into the corresponding location of the BIM model and written into the blockchain ledger. The smart contract will remind the supervision unit to organize acceptance or acceptance according to the batch of materials arriving. Test and inspection work.

The system can free project managers from complicated orders, inquiries, and accounting processing, so they can better devote themselves to more important matters.

· Production link:

The production process is inevitably inseparable from people and equipment.

An inevitable result of industrialization is the improvement of efficiency and quality, and the process behavior quality of people and equipment will determine the formation process of product quality.

Therefore, the result-oriented construction process management in the past must turn to the industrial process-oriented construction management. So which teams will produce each sub-project, and the construction cooperation for each group of concrete The parameters are monitored in real time (IOT hardware) and written to the corresponding location of the BIM model. At the same time, these data are written into the blockchain ledger, which is permanently saved and cannot be tampered with. All data in the production process should be authentic and credible.

We assume that large structures are installed by hoisting equipment. We also assume that if it is not suitable for hoisting operations in heavy rain or wind exceeding level 6, then the hoisting equipment will sense the situation through IOT hardware (or network communication). After this extreme state, the blockchain smart contract will remind on-site managers to restore the equipment to a safe state until the dangerous state is relieved.

The fuel consumption and electricity consumption of each equipment during the production process will be monitored through IOT hardware, and these data will be written into the blockchain ledger.

The blockchain smart contract automatically calculates carbon emission indicators for energy consumption (GBT 51366-2019). Once it is found that carbon emissions exceed the approved indicators, new indicators are automatically purchased in the carbon trading market.

IOT on all production equipment mentioned earlierThe hardware does not need to be connected to the systems of the participating parties. All participating parties only need to use the device key to access data. Perhaps this key is designed by the device developer into a client (such as an APP), then all parties involved only need to install a client to access all data generated by the device.

· Acceptance link

We assume that the strength of the concrete construction is determined by the test equipment (IOT hardware) writing the data directly to the location corresponding to the BIM model and writing it to the blockchain ledger.

The appearance dimensions and number of steel bars of the construction may be generated by using 3D laser scanning equipment to generate point clouds and compared with the BIM design model. The percentage of honeycomb pitted surface and the acceptance accuracy can be accurately calculated according to the quality inspection and assessment standards. The accuracy, which is much higher than manual calculation, is written into the corresponding location of the BIM model and the blockchain ledger.

All personnel and data participating in the acceptance are written into the blockchain ledger and stored permanently and cannot be tampered with.

If a quality problem occurs, the ledger records on the blockchain are like a running account arranged in chronological order, starting from the current record and tracing forward. Who has accepted it? Who made it? Who transported it? Who purchased it? It’s clear who supplied it.

· Payment stage:

With the official issuance of digital renminbi and support for programmability, when digital renminbi enters the field of project payment, it can be said that every project payment The destination has been basically fixed and can be tracked on the blockchain, making it impossible for project funds to be misappropriated. Then when the quality of the project passes the acceptance inspection and meets the conditions set by the smart contract, the point-to-point payment operation of the smart contract will be automatically triggered. No longer going through banks, it can also reduce the company's financial costs.

Therefore, according to the provisions of the capital construction procedures, projects that have not yet been funded in the future will inevitably not receive approval to start construction. For projects that have obtained approval to start construction, contractors, professional subcontractors, material suppliers and even labor personnel will no longer be able to No need to worry about defaulting on project payment.

When the BIM model is anchored to the physical building and turned into a digital asset, the ownership of the digital asset can flow on the blockchain.

Let’s assume that the ownership of a physical engineering component is temporarily retained in the hands of the contractor before the owner has paid the project fee. When a contractor encounters financial difficulties, it happens that the BIM digital assets on the blockchain (anchored (physical engineering components) to prove a certain future income (a project payment paid by the owner in the future), then the contractor can completely mortgage the ownership of this part of the digital asset, and the smart contract can lock the project payment paid by the future owner. The amount is used by the contractor to redeem the ownership of the digital asset.

3. Operation and maintenance stage

p>

A very good scenario in the operation and maintenance phase is the intelligent interaction between devices.

We assume that an unmanned patrol car discovers a defect in the asphalt pavement on the highway through the computer vision recognition system, triggers a smart contract to start another asphalt pavement maintenance vehicle, and this maintenance vehicle also uses smart The contract automatically places an order to purchase the required asphalt mixture repair materials, and automatically drives to the defective location to complete the repair, with little or no human intervention in the process.

In summary, blockchain technology + BIM can better realize smart construction. In turn, the BIM model can be used as a data dashboard for blockchain technology. With the continuous emergence of IOT hardware ( Especially in the operation and maintenance stage), with the continuous filling of data, the continuous refreshing of models, the dimensions becoming more and more full, what you see is what you get, blockchain + BIM will become a smarter smart construction decision-making system.

In the article, we listed some applications in the three stages of planning, design, construction, and operation and maintenance. However, the actual application scenarios are far more than these examples. These examples only serve as a point-to-point discussion.

All the technologies mentioned in the article are existing or already implemented functions (such as blockchain government systems, supply chain tracking, quality traceability, etc.). What is lacking is just the integration of these technologies. It seems that blockchain technology is not originally a new technology, but the integration of existing computer technologies such as distributed storage, asymmetric encryption, and consensus algorithms to achieve this great invention.

Some people may say that BIM forward design has not yet become popular in my country’s construction industry, and 4D and 5D digital construction management based on BIM have only begun to become popular. At this time, we should explore the smart construction of blockchain technology + BIM Is it too early?

What I want to say is,

The concept of BIM was proposed as early as 1975 by Dr. Chuck Eastman of Georgia Institute of Technology in the United States. In 2002, Autodesk officially proposed the BIM concept and technology. 3D visualization has developed to today's 8D concept.

Blockchain technology was also proposed by Satoshi Nakamoto as early as 2008. In addition to digital currency, it has also been widely used in other non-digital currency fields.

Just like artificial intelligence technology,

It was first proposed by computer expert John McCarthy in 1956, but it has been limited by computer technology and hardware and has stagnated until the ImageNET challenge in 2012. The accuracy of visual recognition in the game reached more than 95%, surpassing the limits of the human eye. After breaking through the limitations of computer hardware and technology, the application of artificial intelligence technology ushered in a big explosion.In recent years, life applications such as beauty cameras, voice recognition, and smart push notifications have exploded in our mobile phones.

Therefore, before any technology breaks out in large-scale applications, energy has been accumulating. This is a necessary process. On the one hand, it may be due to technology and hardware limitations, and another very important reason is that there are too few people who understand and participate. Once everyone understands and knows how to do it, this explosive power will naturally flourish.

Just like we keep blowing up a balloon, one day it will explode.

If you are also interested in blockchain applications, search the WeChat public account "Candy Chain Notes" and let's move forward together.

⑸ How does blockchain empower digital city construction | Blockchain classroom

Cities are actively embracing districts Digital technologies such as blockchain, Internet of Things, and artificial intelligence accelerate urban economic growth and improve the quality of urban life and the sustainable development of the environment. The digital transformation of cities also provides a good experimental field for the value mining and application of blockchain technology.

The construction of a digital city not only requires city-wide coverage of connected devices, but also needs to consider the collection of full-process data and automation of decision-making. The data on the blockchain has the advantages of being difficult to tamper with, safe and trustworthy, and can help the construction of digital cities in the following aspects:

The blockchain adopts a distributed storage structure, so each node in the system All data on the system is stored, making the data open, transparent and easy to manage. At the same time, cryptographic technologies such as privacy computing integrated in the blockchain can achieve safe sharing of data without leaking data privacy, or by setting access permissions, authorized nodes can obtain corresponding data to ensure data security.

Thanks to the distributed network structure, even if a single or a small number of nodes fail, the entire blockchain network can still operate normally, greatly reducing the risk of system failure due to network attacks or technical problems. Compared with traditional cities, digital cities rely more on technology. Improving system stability will also help maintain the normal operation of digital city life.

Digital city innovation case empowered by blockchain

Dubai’s digital city project integrates blockchain, Internet of Things, artificial intelligence Smart and other new digital technologies are committed to making Dubai "the happiest city in the world".

A major innovation in Dubai Digital City is to strive to realize the on-chain operation and management of all government data transactions in 2021, and realize the electronicization of an average of 100 million paper-based processes per year. This blockchain-enabled digital transformation is expected to save process management costs worth US$1.5 billion.About 25 million hours of process processing time, while reducing 114 million tons of carbon emissions. In addition, the Dubai government is actively cooperating with many blockchain companies, focusing on key areas and implementing multiple blockchain application cases.

The European Commission also recognized the importance of blockchain in reforming government services, and established the European Blockchain Partnership in 2018, covering local law enforcement agencies, national governments and the private sector in Europe. enterprise. The Commissioner of the European Commission’s Department of Digital Economy and Society is also confident in the value of blockchain technology in digital city construction and stated: “We believe that all public services in the future will be built on the infrastructure of blockchain.”

For example, the government of South Tyrol in Italy has used blockchain technology to digitize citizen data. Residents only need to register basic personal information once to enjoy services provided by different government departments, streamlining government affairs processing procedures, reducing costs and increasing efficiency.

At the same time, based on blockchain technology, Estonia has built a national health information electronic system. Through this blockchain platform, doctors can easily query patients' blood tests, recent treatments, X-ray examinations and other related data with authorization. Patients can also clearly check their medical records, prescriptions issued by doctors and other information. The characteristics of data on the blockchain, such as being difficult to tamper with and fully traceable, can ensure the security and integrity of the data on the platform.

Wanxiang Blockchain has also begun active exploration in blockchain-enabled digital city construction, using blockchain to integrate new digital technologies such as the Internet of Things and artificial intelligence to build a safe and trustworthy digital base. And through technologies such as private computing, knowledge graphs, digital twins, and distributed business incentives, we can manage production and life in a more refined and dynamic way, forming a smart, low-carbon, and comfortable resilient city with technology integration, comprehensive application, and high-end development. Help build a harmonious urban ecology with economic prosperity, job happiness, and sustainable development.

Wanxiang Blockchain is committed to building a digital city that “truly understands you”. Through the integration of blockchain and new technologies, a trusted digital base is built to allow every resident to have an exclusive digital avatar. Truly gain data sovereignty and enjoy a safe and comfortable urban life without having your privacy protected from prying eyes.

⑹ How to build your own blockchain

Part 1: Establish your own blockchain directory from 0 to 1:
1.1 Start with imitation and get to know the block for the first time Chain
1.2 The basis of blockchain: analysis of consensus mechanism
1.3 The design principle and design method of consensus mechanism
1.4 How to quickly clone a blockchain
1.5 How to turn Bitcoin into How to turn Ethereum into your own private chain – fork Bitcoin
1.6 How to turn Ethereum into your own private chain – fork Ethereum
1.7 How to turn Ethereum into your own private chainRipple becomes your own private chain – fork ripple
1.8 How to turn stellar into your own private chain – fork stellar 1.9 How to build a mining pool and dig out your own genesis block
1.10 How Develop your own blockchain wallet (Windows and MAC) 1.11 How to develop your own blockchain wallet (Android and IOS) 1.12 How to develop an online wallet similar to blockchain.info 1.13 How to increase the security of your own blockchain network and robustness 1.14 How to use coind to handle deposits and withdrawals
1.15 How to use a capital pool to build a currency mixing service
1.16 How to design a new mining algorithm
Generally, it is This process is very difficult for ordinary people to complete. Mature blockchain projects include Ethereum, DECENT, Bitcoin, etc.

⑺ How to build blockchain services

Blockchain services refer to developing public chain applications based on the infrastructure provided by the public chain and running the applications to provide services. For example, smart contracts are used to develop public chain applications on Ethereum and run on Ethereum nodes to provide effective services to the public. On Bitcoin, some certificate deposit services are provided using the limited functions of Bitcoin.
Blockchain developers should establish effective channels that can collect the shortcomings of the current blockchain and make targeted improvements. This process is called Improvement Proposals: Bitcoin Segregated Witness ( Consisting of a series of BIPs) is a good example. Developers at the application layer can use the IP process to feed back problems discovered during use to developers, forming a virtuous cycle. And the IP process should not be limited to the technical field, but should go deep into the Business Layer.
The Xueshuo Innovation Blockchain Technology Workstation under Lianqiao Education Online is the only approved "Blockchain Technology Professional" pilot of the "Smart Learning Workshop 2020- Xueshuo Innovation Workstation" launched by the School Planning and Construction Development Center of the Ministry of Education of China. workstation. The professional position is based on providing students with diversified growth paths, promoting the reform of the training model integrating professional degree research, production, and research, and building an applied and compound talent training system.

⑻ What are the blockchain platform construction companies?

Due to the powerful effects of blockchain and its many application fields, we conduct research on blockchain technology. There are not a few companies developing it.

In recent news, both BAT and JD.com have announced their layout in the blockchain field, and Yingtang Zhongchuang, which uses blockchain technology for system development, has already conducted internal research on the blockchain platform. Construction is mainly used in five major scenarios, including finance, Internet of Things public services, charity and supply chain fields. Alibaba’s plan is, track the sales path of goods through the blockchain, establish a verification network, and prevent counterfeiting. JD.com applies blockchain to anti-counterfeiting traceability and food safety. In addition, supply chain finance is also an alternative direction.