最近在众筹的区块链有哪些,最近在众筹的区块链是什么

近来，区块链技术受到了越来越多的关注，众筹也成为了许多区块链项目的重要融资渠道。本文将介绍最近在众筹的三款区块链项目，分别是EOS、Tron和Ethereum。

EOS：EOS是一款基于区块链技术的去中心化应用平台，它被称为“操作系统”，是一款可以支持智能合约和分布式应用的平台。EOS的应用可以通过智能合约实现，可以极大地提高区块链技术的安全性和可靠性，同时也可以极大地提高交易的速度和效率。EOS的众筹活动于2017年6月26日开始，在众筹期间，EOS的价格从1.03美元涨至21.06美元，众筹期间获得了巨大的成功。

Tron：Tron是一款基于区块链技术的去中心化应用平台，它旨在改变娱乐行业的格局，使用户可以在Tron网络上自由发布、分发和交易娱乐资源，提高传统娱乐行业的效率。Tron的众筹活动于2017年9月9日开始，在众筹期间，Tron的价格从0.0019美元涨至0.25美元，众筹期间也取得了巨大的成功。

Ethereum：Ethereum是一款基于区块链技术的去中心化应用平台，它支持智能合约和分布式应用，也是最受欢迎的区块链技术之一。Ethereum的众筹活动于2014年7月22日开始，在众筹期间，Ethereum的价格从0.31美元涨至1350美元，众筹期间也取得了巨大的成功。

以上就是最近在众筹的三款区块链项目，它们分别是EOS、Tron和Ethereum。这些项目都取得了巨大的成功，也为区块链技术的发展做出了重要贡献。

Ⅰ What is erc20

ERC20 is a token standard on the Ethereum blockchain. It is widely used in crowdfunding of blockchain projects. A digital currency that can be used for transactions, payments, investments and many other purposes. This article will introduce in detail the definition, characteristics, advantages and disadvantages, applications and development prospects of ERC20.

1. What is ERC20

2. Characteristics of ERC20

3. Advantages of ERC20

4.ERC20 Disadvantages

5. Applications of ERC20

6. Development prospects of ERC20

1. What is ERC20

ERC20 is a token standard on the Ethereum blockchain. It is a digital currency that can be used for transactions, payments, investments and many other purposes. ERC20 is a standard based on smart contracts. It is widely used in crowdfunding of blockchain projects and is a standard for Ethereum tokens. ERC20 tokens are generated through Ethereum smart contracts, and they can be transferred, paid, and traded on the Ethereum blockchain.

2. Characteristics of ERC20

ERC20 tokens have many unique characteristics, the most important of which are programmability, tradability, traceability and auditability . It can be programmed for more functionality, can conduct transactions on the Ethereum blockchain, can track the movement of tokens, and can be audited to ensure the safety of funds.

3. Advantages of ERC20

The advantage of ERC20 token is that it can support crowdfunding projects on the Ethereum blockchain, and these crowdfunding projects can use ERC20 Tokens for financing. Transactions for ERC20 tokens are also fast and can be completed within seconds. Additionally, transaction costs for ERC20 tokens are also very low, with Bitcoin’s transaction costs being much lower.

4. Disadvantages of ERC20

The disadvantage of ERC20 tokens is that it cannot support cross-chain transactions and therefore can only be traded on the Ethereum blockchain. Additionally, ERC20 tokens cannot be used for investments as they cannot support investment activities.

5. Applications of ERC20

ERC20 tokens can be used for a variety of applications, including crowdfunding, payment, investment, trading, etc. It can be used to support new blockchain projects, and can also be used to support the transactions of new digital currencies and digital assets. In addition, ERC20 tokens can also be used to implement distributed applications (DApps) and implement decentralized financial services.

6. The development prospects of ERC20

The development prospects of ERC20 tokens are very optimistic because they can support crowdfunding of blockchain projects and can also support the trading of new digital currencies and digital assets. In addition, ERC20 tokens can also be used to implement distributed applications (DApps) and implement decentralized financial services. With the development of blockchain technology, ERC20 tokens will become more and more important, they will become an important part of blockchain projects, and Sock Holder will make an important contribution to the development of blockchain technology.

ERC20 is a token standard on the Ethereum blockchain. It has the characteristics of programmability, tradability, traceability and auditability, and can be used by the public. It can be used for various purposes such as financing, payment, investment, and transaction, and has good development prospects.

II How to judge whether a blockchain project is worth investing

1. Project details

Project details are generally published by the project party on some ICO platforms. The platform is responsible for review, and detailed relevant information must be submitted when publishing. Available for user query. The following are what we need to refer to:

◆Whether the project team member information is fake

◆Whether the official website has been recently filed

◆Whether the total project quota is reasonable

◆Whether the additional issuance is excessive

◆Whether the project token allocation is reasonable

◆Whether the project development plan and development plan are clear

II. Product Analysis

Type: application, platform, underlying technology

Carry out corresponding analysis based on different blockchain projects to determine whether the project is suitable for development through blockchain technology and compare Analyze existing products in the industry. For example, a certain project is currently building a decentralized content distribution platform. We can refer to the better TOUs in the industry. As a unicorn in the field of content distribution, Toutiao has grown since its launch in 2012 and now has 500 million registered users and nearly 100 million DAU.

User composition: advertisers, content producers, content readers,

Content ecology: UGC+PGC content generation model has become complete, content composition is diversified, graphic information + Short video + Live broadcast

Profit model: e-commerce advertising and information flow advertising to monetize traffic,

Product advantages: large number of users, classified push of information based on specific algorithms, user experience Good, user habits are developed

Financing experience: Series C, US$1 billion

Based on the above information and comparing it with the project’s white paper, determine what are the real advantages of this blockchain project? If the project white paper cannot clearly describe the product architecture and just talks about concepts, then it is very likely that the product is unreliable.

3. Market analysis

Competing products: not only Sina, Sohu, Tencent, NetEase, Phoenix, Yidian, Zaker, Online News, Zhihu Daily and other major platforms. There are also a series of vertical categoriesContent-like products compete with it.

Competition: A large number of users have developed fixed information acquisition habits, which indicates that the new platform will significantly increase the customer acquisition cost

4. User and usage scenario analysis

p>

◆Content readers: obtaining information, entertainment and relaxation, skill learning, emotional expression, eye stimulation, policy interpretation, consumption decision-making, etc.

◆Advertisers: attract traffic, promote products, and create brand tone.

◆Content producer: Produce high-quality content, receive advertisements, and earn advertising fees.

5. Analysis of industry issues

◆The platform’s definition of effective traffic and recommendation mechanism lead to unstable income for content producers

◆The impact of advertising placement on users The impact of experience

◆The effect of information flow advertising on certain types of products is poor

Attachment: A summary of recent projects on a blockchain crowdfunding project website

◆Internet of Things: Walton Chain

◆Social communication platforms: SNC, Matchpool

◆Asset trading: OmiseGo, OpenANX, Bytom, Gongxinbao

◆Cloud storage technology: STORJ, iex.ec

◆Application distribution, MobileGo

◆Electronic wallet: Status, Monaco

◆Content distribution: YOYOW

◆Smart Investment: CoinFeed

◆Smart Contract: Aeternity

◆Digital Advertising: YouWiFi, BAT

◆Company : Dcorp

◆ICO crowdfunding, venture capital fund: Onplace

◆Blockchain transactions: ICOcoin, Quantum Chain Qtum=

◆Medical care: Cloud Medicine Chain HIS, medical chain

◆Entrepreneurship incubator fund: Starta

◆Blockchain technology application

◆Digital assets: Tenx, Ruizi Chain, ZenGold< /p>

◆Game account system: ugChain

◆New media: Cloud Chain

◆Election: Election Chain ELC

◆Asset exchange: SWFT Platform

◆Copyright: IPC Intellectual Property Chain, Printing Chain

◆Computing Power: SONM

6. Technical Strength Analysis

◆ Whether the core technology is innovative and industry-forward

◆Technical feasibility and implementation difficulty

◆Whether the product type can give full play to the advantages of blockchain technology

◆Whether the project releases a test network

◆Whether the project is open source, generally open source projects will be uploaded to github,

◆Which blockchain will be developed based on

◆Which consensus mechanism to use

7. Team composition analysis

◆Are there any big names in the team?

Whether it is technology big names: such as stratis CEO Chris Trew, Eyal Hertzog from the Bancor founding team, or Tenx investors include Ethereum founder Vitalik Buterin and Fenbushi Capital Partners Shen Bo et al.

The initiator of a certain blockchain product crowdfunding project is Yang Mouke, the former co-founder of Bitcoin China, who launched the ICOcoin project. Or maybe the initiator of the blockchain project is Li Moulai, the "richest man in Bitcoin" in China, launching the Press one project. This can all mean that this project is reliable in a certain sense. Of course, there are exceptions, such as the recent case of Mr. Li, whose project caused outrage in the entire circle.

◆Is the team structure scientific?

Legal consultants, industry consultants, project management committees, third-party organizations

8. Reference blockchain project rating websites< /p>

Relatively reasonable, there are many rating websites, and the rating standards of each platform are also different. There may be a big gap in the ratings given by the same project on different platforms. At this time, we are needed

I have a deep understanding of the basic knowledge related to blockchain and am capable of certain self-judgment. Don’t trust experts. Many so-called experts may have interests tied to the sponsors of blockchain projects.

9. Direct communication

The last point is also the most important. Whether it is a face-to-face road show, or communication in a forum or community, people can intuitively understand whether the initiator of this project is reliable. Whether it is a blockchain product project or some technical questions, the project side can answer them. Whether it is reliable or not will be known once you test it.

Where is the primary currency market?

1. Gitcoin. Gitcoin comes from the V God platform. Many new projects on it require crowdfunding. Gitcoin is an open source software and community incentive platform. Users can support various projects through the blockchain. Most of the current projects are blockchain projects. For example, Bitcha NFT, DAPP, etc.). Many early projects are crowdfunding and donating on this platform, using the initial funds to develop and operate the projects.
2. Coinlist. The last stop before going to the exchange is coinlist. The items in the picture are all from Coinlist. There are FIL, SOL, Futing ICP and other projects that we are familiar with. If you find these projects, you can still make a small fortune.

IV How to grab crowdfunding on the blockchain

How to connect the PHP website to the blockchain crowdfunding
How to connect the PHP website to the blockchain crowdfunding, based on Blockchain crowdfunding platform, methods and processes

Feng Xuexuan
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The present invention belongs to the field of crowdfunding, and in particular relates to a blockchain-based crowdfunding platform and method.
Background technology:

Currently, there are a series of critical illness fundraising systems on the market, such as Shuidichi, EasyCho, and Wuyouchi. Patients can raise funds on these critical illness fundraising systems. . These critical illness fundraising systems claim to not charge any handling fees, but many people cannot believe this. After all, any company must make a profit. No one dares to publish remittance records. There is the possibility of black-box operations, which has great credibility. lacking.

Technical implementation elements:

The purpose of this invention is to overcome the shortcomings of the existing technology and provide a crowdfunding platform and method based on blockchain, using blockchain Each fundraising transaction record is recorded, and anyone can query the transaction records to resolve donors' concerns.

The purpose of this invention is achieved through the following technical solutions: a blockchain-based crowdfunding platform, including:

Patient module, used by patients in crowdfunding Publish crowdfunding information on the platform;

The review module is used to review the crowdfunding information released by the patient;

The promotion module is used to review the crowdfunding information that has passed the review Publish and promote crowdfunding information;

Donation module, used by donors to use digital currency to donate to patients’ crowdfunding accounts;

Blockchain module, used Used to record data information in the crowdfunding process;

The processing module is used to establish a crowdfunding account in the blockchain module for patients whose crowdfunding information has passed the review, and after the fundraising deadline Convert the funds in the crowdfunding account into cash flow and remit it to the patient's bank account based on the current currency exchange rate; and use it to transfer the patient's crowdfunding information, donor's donation information and remittance to the patient's bank account The remittance information is recorded in the blockchain module;

The query module is used for queryers to view crowdfunding information, donation information and remittance information.

Preferably, the blockchain-based crowdfunding platform also includes:

A reporting module for whistleblowers to report crowdfunding information released by patients;

The verification module is used to verify the reporting information of the whistleblower.

Preferably, the patient module includes:

Registration sub-module, used by patients to register platform accounts;

Login sub-module, used Log in to the platform account on the patient side;

The information release sub-module is used by the patient side to publish crowdfunding information after logging in to the platform account.

Blockchain-based crowdfunding methods include:

Patients publish crowdfunding information on crowdfunding platforms;

CrowdfundingThe platform will review the crowdfunding information released by the patient. If the review passes, it will establish a crowdfunding account for the patient on the blockchain module and record the patient's crowdfunding information in the blockchain. on the module;

Publish and promote the approved crowdfunding information;

Donors use digital currency to donate to the patient’s crowdfunding account, and crowdfunding The platform records the donor's donation information on the blockchain module;

After the patient's fundraising ends, the crowdfunding platform will transfer the money into the patient's crowdfunding account based on the current currency exchange rate. The funds are converted into cash flow and the cash flow is remitted to the patient's bank account.

Preferably, the blockchain-based crowdfunding method also includes:

Inquiries check the patient’s crowdfunding information and donor donations through the crowdfunding platform Information and remittance information from the crowdfunding platform to the patient's bank account.

Preferably, the blockchain-based crowdfunding method also includes:

The reporter reports the crowdfunding information released by the patient;
< br />The crowdfunding platform will verify the crowdfunding information released by the patient based on the reporting information of the reporter. If the report is true, the crowdfunding information will be revoked and the donation in the patient's crowdfunding account will be returned to the corresponding amount. Donors.

Preferably, the method of promoting the approved crowdfunding information includes one or more of app promotion, mini program promotion and circle of friends promotion.

The preferred blockchain-based crowdfunding method also includes: if the donor does not have digital currency, open an account for the donor on the crowdfunding platform, and then convert the funds according to the current exchange rate for the corresponding digital currency.

The beneficial effects of the present invention are:

(1) In the present invention, all fundraising data are recorded in the blockchain. Due to the non-tampering characteristics of the blockchain data, , making fundraising data open and transparent, users can easily view each transaction record of crowdfunding, making all donation details open and transparent, which helps eliminate the concerns of donors and patients about black-box operations;

(2) In the solution of the present invention, donations of digital currency are accepted, thereby allowing digital currency to participate in public welfare services.

Explanation of drawings

Figure 1 is a schematic diagram of the blockchain-based crowdfunding platform;

Figure 2 is a blockchain-based crowdfunding platform Process diagram of the crowdfunding method.

Detailed embodiments

The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the implementation of the present invention. examples, not all examples. Based on the embodiments of the present invention, those skilled in the art mayAll other embodiments obtained with creative efforts fall within the scope of protection of the present invention.

Refer to Figure 1-2, the present invention provides a blockchain-based crowdfunding platform and method:

As shown in Figure 1, the blockchain-based crowdfunding platform The fundraising platform includes patient module, review module, promotion module, donation module, processing module, query module, blockchain module, reporting module and verification module, etc.

The patient module includes a registration sub-module, a login sub-module and an information release sub-module. The registration sub-module is used by the patient to register a platform account. When registering, the patient sets the corresponding account name and login password. One account name can only be used once in the entire fundraising platform, that is, there cannot be two identical account names. The login sub-module is used by the patient to log in to the platform account. The patient logs in to the corresponding platform account according to the account name and login password. The crowdfunding platform verifies whether the account name and login password match. If they match, the patient logs in to the corresponding platform account successfully. Otherwise, it prompts to log in. fail. The information release sub-module is used by patients to publish crowdfunding information after logging into the platform account. The crowdfunding information includes the patient's real personal information, fundraising reasons and supporting materials, fundraising amount, fundraising time, etc.

The review module is used to review the crowdfunding information released by the patient. If there are problems such as incomplete data, incorrect data or falsified data in the crowdfunding information, the crowdfunding information will be Dismiss directly.

The promotion module is used to publish and promote the approved crowdfunding information. The methods for promoting the approved crowdfunding information include app promotion, mini program promotion and circle of friends promotion. one or more.

The donation module is used by donors to make donations to the patient’s crowdfunding account.

The processing module includes a crowdfunding account creation sub-module, a fund processing sub-module and an information recording sub-module. The crowdfunding account creation sub-module is used to establish a crowdfunding account in the blockchain module for patients whose crowdfunding information has passed review. The fund processing sub-module is used to convert the funds in the crowdfunding account into cash flow based on the current currency exchange rate after the fundraising deadline, and then remit the cash flow to the patient's bank account. The information recording sub-module is used to record the patient's crowdfunding information, donor's donation information and remittance information to the patient's bank account in the blockchain module.

The query module is used by the queryer to view the crowdfunding information, donation information and remittance information.

The blockchain module is used to record crowdfunding information, donation information and remittance information, and to establish crowdfunding accounts. The process of recording information by the blockchain module is: creating a transaction (tx); broadcasting the transaction (tx) through the p2p network; verifying the transaction (tx); broadcasting the verification result of the transaction (tx) through the p2p network; The transaction (tx) is written to the ledger.

The reporting module is used by whistleblowers to report crowdfunding information released by patients.

The verification module is used to verify the reporting information of the reporter. If the report is true, the crowdfunding information will be revoked and the donation in the patient's crowdfunding account will be returned to the corresponding amount. Donors.

The blockchain-based crowdfunding platform also includes an account opening module, which is used to provide digital currency account opening functions. If the donor does not have digital currency, he or she can open an account for the donor on the crowdfunding platform. operation, and then convert the funds into the corresponding digital currency based on the current exchange rate.

As shown in Figure 2, the blockchain-based crowdfunding method includes:

s1. The patient publishes crowdfunding information on the crowdfunding platform.

Before step s1, it also includes: the patient registers a platform account on the crowdfunding platform, and the patient logs in to the platform account.

s2. The crowdfunding platform will review the crowdfunding information released by the patient. If the review is passed, a crowdfunding account will be established for the patient on the blockchain module and all information will be transferred to the patient. The patient’s crowdfunding information is recorded on the blockchain module.

s3. Publish and promote the approved crowdfunding information. The ways to promote the approved crowdfunding information include one or more of app promotion, mini program promotion and circle of friends promotion.

s4. The donor uses digital currency to donate to the patient’s crowdfunding account, and the crowdfunding platform records the donor’s donation information on the blockchain module. Donors transfer funds based on the patient's account address (in the crowdfunding information) provided by the crowdfunding platform. They can add remark information when transferring; they only need to provide the patient's account address when transferring, and any error in the transfer cannot be withdrawn.

s5. After the patient’s fundraising ends, the crowdfunding platform will convert the funds in the patient’s crowdfunding account into cash flow based on the current currency exchange rate, and transfer the cash flow Transfer to the patient's bank account.

In this embodiment, crowdfunding information, donation information, remittance information, etc. are recorded in the blockchain module, and the non-tamperable characteristics of blockchain data are used to prevent relevant information from being tampered with and ensure that Ensure the authenticity of relevant recorded information.

The blockchain-based crowdfunding method also includes:

Inquiries use the crowdfunding platform to view the patient’s crowdfunding information, the donor’s donation information, and the crowdfunding information. The remittance information of the remittance platform to the patient's bank account.

Anyone can easily view crowdfunding information, donation information, remittance information and other records through the query module, so that relevant information can be traced and traced, making the fundraising data open and transparent, which is conducive to Eliminate the concerns of donors and patients about behind-the-scenes operations.

The blockchain-based crowdfunding methods also include: reportingpersonnel report the crowdfunding information released by the patient; the crowdfunding platform verifies the crowdfunding information released by the patient based on the reporting information. If the report is true, the crowdfunding information will be revoked and the patient’s Donations in the crowdfunding account are returned to the corresponding donors.

Blockchain-based crowdfunding methods also include: If the donor does not have digital currency, you can open an account for the donor on the crowdfunding platform (that is, form a blockchain wallet for the donor ), and then convert the funds into the corresponding digital currency based on the current exchange rate.

The above are only preferred embodiments of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various Other combinations, modifications and environments can be made within the scope of the ideas described herein through the above teachings or technology or knowledge in related fields. Any modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present invention shall be within the protection scope of the appended claims of the present invention.

How to connect PHP website to blockchain crowdfunding
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IV There are many blockchain applications now. What kind of blockchain applications are good? Where can I get a clear understanding of them?

If you want to learn about blockchain applications, you can refer to many books and opinions, including "Blockchain in Pictures", "Blockchain: Reshaping the Economy and the World", "New Economic Blueprint and Introduction", as well as the Binance Community The article includes a detailed understanding of the Binance community platform, which is very powerful.

1. What is blockchain

Blockchain, as the name suggests, is composed of blocks and chains. It is a distributed data storage , point-to-point transmission, consensus mechanism, encryption algorithm and other new application models of computer technology. It is a chained data structure that combines data blocks in chronological order and is cryptographically guaranteed to be an untamperable, unforgeable, safe and trustworthy distributed ledger.

In 2008, Satoshi Nakamoto first proposed the concept of blockchain and encrypted digital currency in his paper "Bitcoin: A Peer-to-Peer Electronic Cash System". Starting from Bitcoin, blockchain has become the underlying technology of various digital currencies.

2. Working principle of blockchain:

1. Basic concepts include:
(1) Transaction: operationOnce, the ledger status will change once, such as adding a record;
(2) Block: records transactions and status data that occurred within a specified time, which is a consensus and preservation of the current ledger status;
br />(3) Chain: It is composed of blocks connected in chronological order. It is a log record of the entire state change.
Understanding the working concept of blockchain, it is not difficult to understand its working principle. Suppose there is a distributed data record book. This record book only allows additions, deletions and changes. Its structure is composed of individual data records. A linear chain formed by "blocks" connected in series (this is also the origin of the name "blockchain"). To add new data, it must be placed in a new block. The maintenance node can propose a new block. However, a certain consensus mechanism must be used to reach agreement on the final selected block.

2. Take Bitcoin as an example to see how the blockchain works.

Bitcoin blocks are divided into two parts: block header and block body.

3. Core advantages and characteristics of blockchain

1. Decentralization
Block The processes of verification, accounting, storage, maintenance and transmission of chain data are all based on the distributed system structure. There is no centralized hardware or management organization. The rights and obligations of any node are equal. The data blocks in the system are composed of Nodes with maintenance functions in the entire system are jointly maintained.
2. Open and transparent
The system is open. In addition to the private information of the transaction parties being encrypted, the blockchain data is open to everyone, and anyone can query the blockchain through the public interface. Data and development related applications, so the entire system information is highly transparent.
3. Security
The blockchain adopts consensus-based specifications and protocols (such as a set of open and transparent algorithms) to enable all nodes in the entire system to exchange data freely and securely in a trustless environment. , so that trust in "people" is changed to trust in machines, and any human intervention has no effect.
4. Information cannot be tampered
Once the information is verified and added to the blockchain, it will be stored permanently. Unless more than 51% of the nodes in the system (almost impossible) can be controlled at the same time, otherwise Modifications to the database on a single node are invalid, so the data stability and reliability of the blockchain are extremely high.
5. Anonymity
Since the exchange between nodes follows a fixed algorithm, the data interaction does not require trust (the program rules in the blockchain will judge whether the activity is valid by itself), so the counterparty does not need to Making the other party trust you by disclosing your identity is very helpful for the accumulation of credit.

4. Classification of blockchains

Currently, the most mainstream classification of blockchains is to divide blockchains into public blockchains (Public Blockchain) based on different participants. ), private chain (PrivateBlockchain) and Consortium Blockchain.

1. Public chain: Anyone can participate in the use and maintenance, and can obtain effective confirmation of the blockchain. The public chain is the earliest blockchain and the most widely used blockchain at present. , typically such as the Bitcoin blockchain, the information is completely public.

If a permission mechanism is introduced, it will include private chain and alliance chain.
2. Private chain: A company or individual only uses blockchain technology and has exclusive write permission to the blockchain, and the information is not made public. At present, conservative giants (traditional finance) all want to experiment with private blockchains, and the application products of private blockchains are still being explored.
3. Consortium chain: It is a blockchain between the public chain and the virtual chain, jointly controlled by multiple organizations. The use of this chain is managed with authority and can be controlled by managers and also based on The manager's wishes are open to others.
In addition, according to the different usage scenarios and purposes of blockchain, it is divided into currency chains for the purpose of digital currency, property rights chains for the purpose of recording property rights, crowdfunding chains for the purpose of crowdfunding, etc. .

5. Analysis of specific application scenarios of blockchain

1. Information anti-counterfeiting

On May 28, Tencent CEO Ma Huateng spoke at the Guiyang Digital Expo The problem of Moutai anti-counterfeiting has been raised: the anti-counterfeiting method based on cloud-based comprehensive blockchain technology will be much more efficient than traditional anti-counterfeiting methods. In future anti-counterfeiting verification scenarios, users may only need to perform a simple scan with their mobile phone to obtain a large amount of complete information based on different dimensions.

Take Moutai as an example:

Distillery address, production workshop, operating employees, inspectors, factory time, transportation vehicle information and driver information,

The vintage source of raw materials for wine, raw material suppliers, storage warehouse numbers, raw material transportation vehicles and driver information,

All information can be accurately traced, permanently recorded and cannot be tampered with.

The authenticity can be easily verified based on the above information.

2. Food safety issues

As early as November last year, Walmart had cooperated with IBM to ensure food safety by using blockchain technology to track food sources. safety and increase the circulation of food to reduce costs. For large supermarkets such as Wal-Mart, when food safety problems occurred in the past, it took several days to investigate the source of the problematic food. After using this technology, only one piece of information about the product is required. It can accurately trace the source of important information such as food origin, inspectors, suppliers, logistics and transportation, and quickly detect problems within a few minutes. Currently, products tracked using blockchain include packaging products in the United States and pork in China.

3. Information Security

Blockchain technology is promoting a revolution in information security technology. Three major security threats: man-in-the-middle attack, data tampering, and DDoS

(1) Identity protection

PKI is a common public key encryption technology used in various communication applications such as emails, messaging applications, and websites. However, since most PKI implementations rely on a centralized trusted third-party certification authority (CA) to issue, activate and store user certificates, hackers can attack PKI to fake user identities or crack encrypted information.

CertCoin is the first blockchain PKI implementation, coming from MIT, which removes the centralized certification center and uses the blockchain as a distributed ledger of domain names and public keys.

Pomcor Company: Blockchain PKI implementation path: retain the certification center and use the blockchain to store hash values ​​of issued and activated certificates. Users can verify the authenticity of certificates through decentralized and transparent sources, while also improving network access performance through local authentication of keys and signatures based on blockchain copies.

(2) Data integrity protection

GuardTime has developed a keyless signature architecture (KSI) based on blockchain technology to replace key-based data authentication technology. KSI stores hashes of the original data and files on the blockchain, runs hashing algorithms to verify other copies, and compares the results with the data stored on the blockchain. Any tampering with the data will be quickly detected because the original hash table is stored on millions of nodes.

(3) Protection of critical infrastructure

The "Achilles' heel" of the Internet, DDoS has entered the TB era, and DDoS is still the easiest way for hackers to defeat large targets at low cost. As a weapon, DNS services are the primary target for hackers to carry out large-scale damage, but blockchain technology is expected to fundamentally solve it.

The distributed storage of blockchain makes hacker attacks lose focus. Nebulis is developing a distributed DNS system using the Ethereum blockchain and the InterPlanetary Internet File System (IPFS, a distributed alternative to HTTP product) to register and resolve domain names. The biggest weakness of DNS is caching. Caching makes DDoS attacks possible and is also the bane of centralized governments censoring social networks and manipulating DNS registrations. A highly transparent, distributed DNS system can effectively prevent any entity, including the government, from manipulating records.

IV. Financial Industry

(1) Digital Currency: Improving the convenience of currency issuance and use

For example, foreign Bitcoin and Ethereum, our country currently There are Nuo Compao and so on.

From the use of physical transactions, to physical currency and credit currency, to the rise of the Bitcoin network, more people are aware of the distributed ledger blockchain technology behind it, and gradually outside of digital currency applied in many scenarios.

(2) Cross-border payment and settlement: realize point-to-point transactions and reduce intermediate costs

Transfer and payment. At present, the most mature application of blockchain technology is payment and transfer. Blockchain technology can avoid complicated systems, save the process of inter-bank reconciliation and review, and speed up settlement; using virtual currency does not require the intervention of a clearing house., reduce transaction costs. The clearing procedures of each country are different. It takes 2 or 3 days for a single remittance to arrive, which is inefficient and accounts for a large proportion of funds in transit. No longer going through a third party, point-to-point payment is formed through blockchain technology. Eliminating the need for third-party institutions, you can make payments throughout the day, receive money in real time, quickly withdraw cash, and reduce hidden costs, helping to avoid financial risks. It is timely and convenient.

(3) Bills and supply chain financial business: reduce human intervention, reduce costs and operational risks

Point-to-point value transfer, physical bills or central system for control and verification; intermediary will be eliminated and human intervention reduced. Improved efficiency, smoother financing channels, lower risks, and benefits for all parties.

(4) Securities issuance and trading: realize quasi-real-time asset transfer and accelerate transaction clearing speed

The application of blockchain technology can make the securities trading process simpler, more transparent and faster , Reduce IT systems with repetitive functions and improve the efficiency of market operations. For stocks, blockchain can eliminate paper and pen or spreadsheet records, reduce human errors in transactions, and improve the transparency and traceability of trading platforms. Citi and Nasdaq collaborate to advance blockchain applications.

(5) Customer credit reporting and anti-fraud: reduce legal compliance costs and prevent financial crimes

Customer information and transaction records recorded in the blockchain help banks identify Abnormal transactions and effectively prevent fraud. The technical characteristics of blockchain can change the existing credit reporting system. When banks perform "know your customer" (KYC), the data of customers with bad records will be stored in the blockchain.

Equity crowdfunding: Equity crowdfunding based on blockchain technology can achieve decentralized trust and investors’ returns are guaranteed.

5. Supply chain management

Distributed ledger system, participants track the ownership of assets throughout the process, and can be used to track auto parts when moving between countries and factories.

Toyota is developing blockchain technology solutions for its core parts supply chain operations. Using a large amount of data helps Toyota more efficiently ensure the accuracy of recorded data and can also help manage the supply chain. At the same time, the blockchain supply chain can control warranty, repair goods-related costs and specifications through smart contracts, and transactions throughout the product life cycle are irrevocable.

The shipping industry’s first public solution, deployed by Maritime Transport International (MTI), uses blockchain supply chain technology to share Verified Gross Mass (VGM) information for shipping containers. Information about container VGM is important to ensure ships are properly stowed and to prevent accidents at sea and in ports. VGM data is stored on the blockchain supply chain, providing a permanent record for port officials, shipping companies, shippers and cargo owners. This replaces cumbersome logs, spreadsheets, data brokers and private databases.

Logistics Integrity System Wagonbang Wagonbang launched a blockchain-based financial solution for logistics enterprises, aiming to provide enterprises with reliable financial services. Not only can it help drivers solve their loan problems,The problem of payment difficulties can also change the current situation of lack of integrity in the industry and help build a logistics integrity system. Help build the identity chain of logistics companies and create a trusted data ecosystem for logistics companies. Using a transparent, supervisory, and traceable algorithm model, we screen reliable companies that need financial support and provide them with financial services. On the other hand, at the technical level, various law enforcement departments are linked to jointly punish dishonest companies.

6. Government management

(1) Election

Based on the characteristics of blockchain technology and considering the shortcomings of current election technology, we will build an open source , Blockchain applications for elections, voting and lottery, we call it ElectionChain. We hope to optimize election and voting technology to make voting more open and transparent, reduce human manipulation, and allow voters to verify their election results.

Including identity authentication, multi-chain system, flash investment protocol, consensus algorithm EDPOS, privacy protection, voting mechanism design, decentralized ELC rental market, storage solutions, smart contracts, etc.

(2) Government services

Aiming to realize an e-government digital ecosystem based on blockchain technology and provide citizens with government services and an automated mechanism for the business of various government departments, it must be All areas of national government affairs are combined to form a common information space, including government agencies, economic data, financial transactions and social fields. This ecosystem should also include registries and corresponding software for building smart contract-based applications and platforms for government agencies, businesses and public users.

VI Which currency in the currency circle has implemented application

MetaMask is a software cryptocurrency wallet used to interact with the Ethereum blockchain. MetaMask allows users to access their Ethereum wallet via a browser extension or mobile app, which can then be used to interact with decentralized applications. Of course, you first need to have a MetaMask wallet and go to chrome.google.com/webst

Ⅶ What are the companies that apply blockchain technology for system development_In what fields can blockchain technology be applied?

With the increase in news about the combination of blockchain technology and various scenarios, people from all walks of life have attracted attention to the future market development of blockchain, and the technical team of blockchain applications has also begun to enter the public eye. For example, Yingtang Zhongchuang develops software system solutions based on blockchain technology, Bubi uses points application based on blockchain technology, and Xiaoyi establishes equity crowdfunding based on blockchain technology. After seeing the application value of blockchain technology, many companies have joined in and began to research and apply blockchain technology, forming a situation where a hundred flowers are contending.

In the era of blockchain economy, the proposition of integrity and harmonious society has been raised to a new level, so in the future, all companies interested in transforming the world will gradually pay attention to or even directly enter.