区块链追踪溯源,区块链具备可追溯特征是源于什么技术?

Ⅰ What are the functions of Secoo’s blockchain technology?

The functions of Secoo’s blockchain technology:

1. Utilize blockchain Technology can open up anti-counterfeiting, traceability, and full traceability information between brands, Secoo, users, and appraisal institutions, and comprehensively display it to consumers through the APP, greatly improving the user trust experience.

2. Regulatory authorities and high-quality brands can be actively involved in the formulation of luxury goods traceability standards. With the help of blockchain technology, the absolute security of information can be ensured, providing a strong security guarantee for the entire supply chain information management.

3. Distributed stored product information can be read. This information can include all aspects of product design, production, logistics, circulation, etc., in order to achieve the goal of controlling production enterprises, distribution channels, appraisal departments and The end users and the recirculation industry chain are fully transparent.

4. Use blockchain technology to seize the opportunities in the second-hand luxury goods market. Expand more partners in the industry as nodes. Partners with luxury goods appraisal qualifications and corresponding anti-counterfeiting technology are allowed to upload product information and make inquiries.

(1) Tracing the roots of blockchain. Extended reading on Zhihu:

On June 30, 2018, Secoo held Secoo x Emotionally in Shanghai Unavailable brand co-branded new product launch conference. In this cooperation, Secoo applied blockchain technology for the first time. The blockchain launched is the first luxury alliance chain in the industry. Secoo has also become the first blockchain in the luxury goods field to be commercialized as soon as it is launched. enterprise.

Compared with public chains, blockchains are legal and compliant, operate at high speeds, are safe and controllable, can take into account both innovation and stability, and have the conditions to carry commercial-level applications.

The establishment of Secoo Blockchain Alliance will be an important part of Secoo’s high-end retail strategy. It is for the competition of the underlying technology on the future alliance chain, as well as the all-round consideration of many aspects such as the interest distribution mechanism of the alliance chain and long-term fairness issues.

Ⅱ Principle of Blockchain

Blockchain is a technology, but it is not a single technology, but the result of the integration of multiple technologies, including cryptography, Mathematics, economics, network science, etc. You can think of it as a distributed shared accounting technology, or as a database, except that this database is jointly maintained by all nodes on the chain, and each node has a ledger, because all nodes The ledgers are consistent, different nodes can trust each other, and there is no doubt about the data, so everyone says that the blockchain has technically achieved trust. For detailed professional technology, you can consult some professional technology companies. For example: Jinbo Technology, which focuses on developing blockchain-related products, has a professional R&D team and complete after-sales service. You can call for consultation.

Ⅲ What is blockchain technology and what areas it may be used for in the future

The development of technology is often beyond your imagination, from the agricultural revolution to the industrial revolution to the information revolution, as of until nowStarted the blockchain revolution. Reaching the height of the cognitive revolution should be considered a relatively big proposition. Why did the previous emergence of the Internet, big data, artificial intelligence, etc. not mention the cognitive revolution, but blockchain can?

How to quickly enter the blockchain industry?

1. Find the top experts in this industry and learn or communicate with them, such as Li Xiaolai, such as Uncle Cai

2. You can buy some books. News books are not as mixed as Taobao. There are only a few classics, choose a few and read them through

3. You can search for more related articles, public accounts, Zhihu or other, which are very informative. You can find yourself after reading 30 high-quality articles. Article, you are basically getting started.

WeChat public account: Workplace Cheese Pie, tell you about things in the workplace

IV What are the application scenarios of blockchain

In Oracle's website lists ten industry application scenarios for blockchain

Including finance, production, education, media, entertainment, government, and retail business , health, medical, supply chain, insurance, public utilities. Isn’t it very noble? But what I want to say is these application scenarios. In the face of truly high-powered blockchain applications, these application scenarios can only hide in the corner and tremble.

Nowadays, the truly high-powered application scenario of blockchain is Ponzi application, commonly known as "Ponzi scheme". It is a smart contract-type Qianbao, a blockchain game with rolling deposits and withdrawals, an ICO for transaction purposes, and a global pension platform.

Ponzi scheme is one of the oldest application scenarios of our mankind. After the emergence of the Internet, Ponzi scheme has been upgraded to "Internet +", that is, "Internet + Ponzi scheme". The Internet empowers Ponzi schemes, so events like Qianbao's tens of billions occurred. Before the Internet era, there were few Ponzi schemes of this scale. Empowered by the Internet, deposits and withdrawals were made through mobile APPs, and finally rolled In a few years, it has reached a scale of tens of billions.

The Internet has broken down geographical restrictions, physical restrictions, capital flow restrictions, and communication restrictions. As long as you have a mobile phone, you can play the Qianbao APP. Everyone participates, everyone deposits money, and everyone withdraws money. The number of people involved in the case is said to be in the millions. Relatively speaking, it is still an online pyramid scheme (Ponzi scheme 1.0), every day. The brainwashing cannot be stopped during meetings, and violent and illegal means are used, which is simply too weak. With the rise of blockchain technology, Ponzi schemes empowered by "blockchain+" can no longer be described as becoming more powerful than a tiger. It is simply like a chicken becoming a tiger. Like the Internet, "Blockchain+" technology has truly improved application scenarios. Ponzi schemes have further upgraded on the second generation basis of "Internet+". Because of major breakthroughs in scenario enhancements and improvements, they have become Ponzi Scheme 3.0. , its characteristics are mainly reflected in the following aspects:

1. Decentralization, no leadership. The smart contract of the blockchain runs automatically and does not requireIt cannot be interrupted by human intervention. Code rules are hard-coded and cannot be tampered with. In terms of scene improvement, it has solved the biggest pain point of Ponzi schemes for thousands of years, that is, the problem of the leader running away. Because the leader is a program and a code, the blockchain program can exist permanently and no one can delete it. I think that was the biggest breakthrough. This virtual leader is always there. He cannot run away, will not run away, and will not change. The rules will never change, and he will adhere to the Ponzi line for one hundred, one thousand, and ten thousand years. Some people may say that smart contracts can be iterated and can also be manipulated to leave backdoors. That's right, but it can also be done without iteration. Even if it is iterated, it will be transparent and visible, and it will be clear at a glance if there is a backdoor. This is the characteristic of blockchain smart contracts. If you cheat on it, it is equivalent to taking out cheat sheets under the nose of the teacher. No one will participate in such a smart contract once it is online. Therefore, after technical review and verification, there are no backdoors, fair rules, and irrevocable smart contracts, which can be implemented using blockchain technology. Such reliability, once verified, remains unchanged forever. This is the certainty of smart contracts. For a program, even one character of the code remains unchanged. If it is run a million or a trillion times, the result will be consistent and deterministic.

2. Process transparency. The number of depositors, address account, amount, and time; the number of withdrawals, address account, amount, and time; all are visible. The blockchain has a public ledger function, which can be viewed by everyone around the world, and the ledger data viewed by everyone is exactly the same. Why did Qian Bao lose his position? Because we can't see his backend account, how much money goes in every day, how much money comes out, and the specific details of each transaction. In this way, you can see the evaluation of your redemption ability before depositing money, and the evaluation result is absolutely certain, that is, it will not change after you deposit.

3. Complete anonymity. If you have heard of zero-knowledge proof technology. You can skip this part. To put it simply, many of the things we had in the mathematical knowledge base in the past had no application scenarios after invention. Later, it was discovered that this knowledge is very useful for anonymization. The cryptography technology in the blockchain can effectively achieve identity concealment. As we all know, Zhihu cannot achieve true anonymity in terms of technical structure, but blockchain can.

4. The rules are open and fair to everyone. Deposit one yuan and withdraw ten yuan as rebate. This is the rule for everyone and it will never change. You deposit one dollar, and first withdraw money to the person in front of you, and then the person behind you deposits money, and then withdraws money to you. Fair, right? I have reflected on this many times and think it is still fair.

5. Sustainable iteration. In low-level Ponzi schemes, the leader, product designer, profit distributor, and benefit recipient are often four in one. However, in a blockchain Ponzi scheme, the four roles can be completely logically separated. Achieve sustainable iteration. Through social-based collaboration, these projects can be continuously iterated. There are now 400 senior engineers who are developing around Bitcoin and are constantly updating the code. These people don’t need to know anyone, as long as the application is valuable.Keep iterating. Which centralized project can do this? Even a BAT-level company cannot hire so many professionals scattered around the world. This iterative method of socialization is not affected by changes in a specific person or organization.

Ponzi schemes empowered by "blockchain" use blockchain technology in different scopes, because the technology in this field is still constantly being updated. Applications such as smart contracts are these two The years just add up. The earliest blockchain application is Bitcoin. Some people think that Bitcoin itself has the characteristics of a Ponzi scheme. In 2013, I wrote an answer that implicitly pointed out that this new type of Ponzi scheme will be very lethal because it has the characteristics of a Ponzi scheme. It has the characteristics of no leader, open ledgers, no escape, and open and fair rules. Later, I also discovered that many people around me were more interested in Ponzi schemes than in blockchain technology. Once they hear that Bitcoin is not a Ponzi scheme, they usually walk away silently before I start talking about blockchain technology. On the contrary, if you tell them that it is a Ponzi scheme, they will then ask where to buy it. ? Of course, there is a lot of controversy over whether Bitcoin is a Ponzi scheme, because the actual application scenarios of Bitcoin are constantly expanding.

In the ICO craze, there are many air coins, which are fake Ponzi schemes and have no application scenarios. People who buy these air coins probably know that they are Ponzi schemes. , but seeing that the packaging was good, I bought it. There are estimated to be hundreds or thousands of such air coins. The scope of the cases involved spans the world, and the amount exceeds tens of billions. These ICOs use smart contracts for subscription and allocation, and then circulate on their own in the secondary market. In this case, withdrawals are not guaranteed, and some people may lose all their money. Many blockchain professionals have always wanted to draw a clear line between these applications, because although these air coins use part of blockchain technology, there is still a centralized organization or individual behind them, with very few network nodes, and users cannot deposit funds. At that time, it was directly aggregated to an organization or individual (and therefore would be swept away). However, there is no doubt that Aircoin still uses the blockchain for deposits and raising funds, which solves part of the problem of running away and increases the scope and scope of the Ponzi scheme. Communication ability. This is what happens objectively.

Since this year, with the advancement of technology, Ponzi schemes that use smart contracts to achieve more decentralization have begun to surface. Deposits and raises are locked using smart contracts to complete a complete closed loop of deposit, subscription and withdrawal. It can already be a very pure blockchain application. There are some blockchain games that can be openly admitted. After their release, they publicly claimed that they were a Ponzi game. He said: Look, the rules are transparent, the code is visible, and the deposit contract is Locked, no escape, no human intervention, automatic withdrawal. Play early and earn early. This is a crucial breakthrough, publicly admitting that you are a Ponzi scheme, which is something that Ponzi schemes 1.0 and 2.0 could not do before (they did not dare to openly admit that you are a Ponzi scheme). incredible. The gameplay is simple and crude.

This solves a major obstacle in the promotion process of Ponzi schemes in the past. In the past, brainwashing was used to attract people.Human heads now rely on code to speak. You see, "This program won't run away on its own. Is there no backdoor in it? The leader has disappeared, right? Even if Satoshi Nakamoto is caught, it won't affect the continued execution of the program, right?" So the first batch of blockchain Ponzi schemes fell into the trap, right? What is important are coders who understand the code, and then these coders stand up and say that after technical verification, it is indeed such an effect, driving other people who do not read the code to join.

In addition to Ponzi scheme application scenarios involving entertainment, gambling, and fraud, blockchain also has opportunities to flex its muscles in Ponzi scheme application scenarios involving the national economy, people's livelihood, and public utilities, and can even be extremely effective. Dadi enhances people's sense of gain and happiness, and actually improves people's lives. For example, the application of national or global public pension platforms based on blockchain. Because this platform is based on blockchain, it can solve several major shortcomings of pension funds:

1. The problem of fund misappropriation. The ledger is open, and the funds are locked in a decentralized manner. No one can unlock it, except recipients who meet the rules and can withdraw funds. No possibility of appropriation.

2. Inflation problem. The current pension system adjusts coefficients every year based on a series of complex algorithms such as inflation. After adjustment, recipients are often dissatisfied because the total amount has increased, but their purchasing power has decreased. By taking advantage of the fact that virtual currency cannot be issued additionally, the inflation rate can be restrained and all the money received can be guaranteed to be real money.

3. Unpredictable problems. It is difficult for us to predict the pension withdrawal situation in 30 years, but it can be predicted in advance through smart contracts. Stimulate payment enthusiasm.

4. Policy loopholes and fairness issues. Any pension policy targets diverse groups and there will be unfair situations. Everyone wants to pay less and get more, pay later and withdraw early. The transparency of the blockchain is down to each account, rather than a set of general policies that plug loopholes in the implementation process. Everyone is the same, pay more and get out more, pay early and get out early. It can even be inherited and never lost.

This greatly reduces the burden and cost of managing pensions by the state. Things that the existing pension system can do can still be done after using blockchain technology, such as state subsidies. Just put money into the contract, and it will be locked. There will be no fakes, such as forced payment, and every record will be true and traceable. All in all, all existing systems and rules can be put on the chain, which improves efficiency and output levels and ensures fairness without affecting the existing effects. Moreover, because the cost of the huge management system is reduced, everyone can receive The absolute number may increase a lot, which will have the effect of actually improving people's lives. Again, it will increase the sense of gain and happiness. When it comes to pensions, the subject of our trust has changed from a single national government to a national government + blockchain, and more than 50% of the process has become a fixed software program. Aren’t we more trusting in this way? If the on-chain pension system is 100% implemented, it can even break the national restrictions and be implemented by a piece of code that is honest, cannot cheat, and cannot be tampered with.Automatic deposits and automatic withdrawals, trusting it is like trusting a dead person, there will be no mistakes.

The design of the next generation to support this generation is a great invention of our human evolution, which has accelerated the speed of social development. On the surface, it seems that the last generation on earth will suffer more, but in fact it is not. Yes, because the last generation of people on earth may not necessarily know that they are the last generation (maybe they know it in the last few seconds, but so what). What’s more, the earth has disappeared, does the last generation of people still need to withdraw funds for retirement? Obviously, no need.

The biggest disadvantage of a Ponzi scheme is that it runs away midway and the funds are broken. Blockchain has a clear technical solution to solve this problem, and it can also be proven and falsified, so , this technology is scientific. Once the disadvantages are eliminated and the benefits gradually emerge, the Ponzi scheme will achieve greater development in the future.

I also want to ask a question. In human history, are there any things that were originally negative or useless? Later, with the development of technology, the disadvantages were eliminated or avoided, and the functions were discovered. And then become more and more useful and important?

IV Blockchain + supply chain transforms into a demand chain, creating a new model of supply chain development!

In 2018, a disruptive technological revolution is coming crazily, and the protagonist is - blockchain.

Blockchain technology is considered to be the next generation of disruptive core technology after steam engines, electricity, and the Internet. If steam engines release people’s productivity and electricity solves people’s basic living needs, The Internet has completely changed the way information is transmitted, and blockchain, as a machine for building trust, will likely completely change the way value is transmitted throughout human society.

The "blockchain+" revolution has begun in industries such as medical care, finance, and smart manufacturing, and will undoubtedly have an important impact on the supply chain. Supply chain management and supply chain finance, because the market scale is large enough and meet the characteristics of multi-trust entities, multi-party collaboration, medium and low-frequency transactions, and complete business logic, are natural places for blockchain to come into play.

1. Problems in the traditional supply chain

Supply chain management has a large span and information asymmetry

The current supply chain has a large span between upstream and downstream. There are many companies involved, and the core company's management capabilities and scope of influence on the entire supply chain are limited. Management efficiency has dropped significantly and management costs have increased.

The product production cycle and supply cycle have become complex, fragmented, and geographically decentralized. Traditional technologies and concepts can no longer adapt to today's commodity production and supply.

Generally, enterprises can manage up to level 1 or 2 suppliers. With the continuous refinement of the global division of labor, the number of suppliers has doubled, continued to extend, and spread all over the world. Core companies cannot circulate to upstream and downstream supply companiesGoods can be controlled in real time.

In the era of big data, information asymmetry will put enterprises at a disadvantage and even reduce the value of the entire supply chain ecosystem.

Weak ability to trace information back to the source

Due to the lack of transparency among companies in the supply chain, buyers and sellers lack an effective and reliable method to verify the products they buy and sell. of true value.

This means that the price paid by the buyer cannot truly reflect the cost of the product, which invisibly increases the overall cost of the supply chain.

At present, the supply chain is still unable to trace the sources of counterfeit and shoddy goods, illegal labor, money laundering and other illegal activities in each link of the supply chain.

It is difficult to obtain data from the entire supply chain

The information systems of the companies involved in the supply chain are scattered in the hands of different suppliers, including procurement, production, circulation, sales, and logistics. When information is completely separated, there is no information platform to store, process, share and analyze this information, which limits the potential value of rich data and information, and a large amount of information is unable to be collected or accessed.

At the same time, it also makes the verification and review of this information difficult and cumbersome, and the information exchange is not smooth, requiring manual repeated reconciliation, which also increases the audit cost of transaction payment and account period.

2. Blockchain + supply chain can solve many problems

Information is updated in real time and third parties are eliminated

Blockchain can build a A platform for all supply chain links such as suppliers, manufacturers, distributors, retailers, and logistics. On this platform, all enterprises form an alliance to record logistics, information flow, and capital flow on the chain, and track and supervise supply in real time. Chain all dynamics and achieve collaborative work.

The entire supply chain is made transparent and visible. Multiple participants in each transaction can view the same transaction records, verify identities and confirm transactions without the need for third-party intermediaries.

Facilitates traceability

Transformed into ledger information shared by all participants throughout the entire life cycle of the transaction. It is communication based on the status of information rather than the delivery of information. Information that was obscure in the past is now clearly visible.

At the same time, the blockchain is a publicly issued ledger. The ledger has a decentralized structure. No party has ownership of the ledger, nor can it manipulate the data as it wishes. Blockchain can trace the entire process of commodity production.

3. New model of supply chain finance

Since the blockchain breaks the data islands of each enterprise, the big data provided to the supply chain will have more data sources, which greatly improves the stock and quality of data, making big data better. play its role. At the same time, the non-tamperability of blockchain data also enhances the credibility of the data, making it possible for companies to use data for credit reporting, thereby promoting the establishment and prosperity of the big data trading market.

In supply chain finance, the bill platform built with blockchain technology can be combined with supply chain finance business to realize bill financing, issuance, payment bill splitting, statistical reports, clearing and settlement and other functions . Realize that digital bills can be paid and split quickly and openly and transparently under the witness of multiple parties, allowing the credit of core enterprises to be transferred to the upstream and downstream of the supply chain, creating a new model of supply chain finance.

Blockchain can benefit every link in the supply chain and improve the efficiency of supply chain management. Product supply chain collaboration model based on blockchain After the blockchain is added, data is shared among supply chain participants, and a complete and smooth information flow can be formed on the entire supply chain to ensure that participants can discover the operation process of the supply chain system in a timely manner existing problems and find targeted solutions to them, thereby improving the overall efficiency of supply chain management.

In this regard, blockchain technology has greatly accelerated product traceability and product recall, and reduced product quality risks. They will make manufacturing more responsive, enabling customizable customer orders—in effect, transforming supply chains into demand chains. As supply chains operate more like demand chains in this scenario, trust dilemmas like these may force manufacturers to look at blockchain solutions.

In the future, supply chains will be more dynamic, flexible and customer-oriented than today, and geographical location and long-term relationships will no longer be so important.

VI What is the mystery of blockchain technology and what impact it will have on people’s production and life

Bitcoin is a virtual currency invented in late 2008 and early 2009. Currency, he published an article "Bitcoin: A Peer-to-Peer Electronic Cash System." Blockchain technology is a technology he uses. In other words, Bitcoin is the world's first "decentralized" digital currency. In order to invent it, Satoshi Nakamoto created a new technology and named it "blockchain". In 2019, the country placed great emphasis on accelerating the development of blockchain technology and industry in collective learning. An important characteristic of blockchain is that it is decentralized, cannot be tampered with, and cannot be forged.

Blockchain technology will definitely have great potential in the future. Now it is a new technology, and people may not be familiar with it, so their acceptance is not high. However, with the support of national policies, the advantages of blockchain technology have become more prominent, and the fields of future application willMore extensive.

Ⅶ What is traceability and what is product traceability system

Traceability is also called "tracing back to the source", which is a metaphor for looking back or reminiscing about the past to explore the essence or source.
In the operation of the commercial market, it contains two meanings:
First, tracking, that is, the ability to follow the flow of one or a batch of commodities from production, circulation to consumption, that is, forward tracking;
/>The second is traceability, that is, the ability to identify the source of a specific commodity or batch of commodities from consumption, circulation to production, that is, reverse traceability.
The traceability system means that each product has a unique identification, that is, a traceability QR code. The identification is saved as a record in the traceability system, which records product information, raw material procurement (or planting or breeding), production and processing, All information including warehousing, circulation, sales and so on.
The so-called traceability refers to tracing the origin of products and establishing a product quality traceability system so that the source can be traced, the destination can be traced, and the responsibilities can be held accountable. (China Traceability Mall.com only sells traceable products) This will protect the legitimate rights and interests of regular manufacturers, combat piracy, infringement, counterfeiting, shoddy goods and other unhealthy trends, and at the same time return the consumer market to a clear flow, allowing consumers to buy Traceable products with peace of mind.

ⅧWhat is blockchain and how to evaluate blockchain

First of all, don’t think too profoundly about blockchain. It is a database that is distributed around the world and can operate collaboratively. Storage systems are different from traditional database operations - read and write permissions are in the hands of a company or a centralized authority (centralized characteristics). Blockchain believes that anyone with the ability to set up server nodes can participate. Nuggets from all over the world have deployed their own nodes locally and connected to the blockchain network to become a node in this distributed database storage system; once joined, the node enjoys exactly the same rights as all other nodes and obligations (decentralized, distributed characteristics). At the same time, people who provide services on the blockchain can perform read and write operations on any node in the system. Finally, all nodes around the world will complete synchronization one after another according to a certain mechanism, thereby achieving The data of all nodes in the blockchain network are completely consistent.

Blockchain itself is a technology, therefore, it cannot be a scam. Just like the "p2p" finance that has become popular in recent years, how many scammers are disguised as P2P concepts and illegally absorb Public funds, defrauding people of their hard-earned money? But is "P2P" guilty? It is just a person-to-person model of Internet finance. It not only creates profits, but also lifts thousands of people out of poverty, achieving a win-win situation for both those who are helping the poor and those who are being helped. Bihui Digital Currency Trading Platform

The existence of problems cannot hinder the development of the blockchain. The proposal and in-depth research of technologies such as simple payment verification, side chains, and lightning network protocols are already part of the blockchain The chain actually solves the problem.

IX What are the applications of blockchain technology

Developing Ethereum Cat based on Ethereum, this is not considered an application, it is a bit fun to play, and there is also NetEase Planet. For traceability, I have snapped up the Orange Chain made by China Enterprise Tongbao Blockchain, which is used for blockchain traceability records on Orange.