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Professional blockchain solutions
Publish: 2021-04-25 21:41:17
1. In 2017, he began to work in the blockchain instry for three years, which witnessed the instry from obscurity to sudden outbreak and then to calm. Let's make a conclusion first. If you are willing to spend money, I suggest you go to professional IT consulting and delivery companies like ThoughtWorks / starwalker. In my understanding, the market is roughly divided into
1. The underlying chain platform providers, such as ant / network, usually only provide chain and development tools, but the specific instry / scenario solutions and development delivery capabilities are limited, which is not their focus. They want to use blockchain to package and sell more cloud services
2. Blockchain solution companies usually provide blockchain solutions in their own familiar fields, but most of them are small and medium-sized teams or start-up teams. Most of them have little difference in blockchain technology capabilities and have a deep understanding of their respective fields
however, the biggest problem for such companies is that because the blockchain instry is still in its early stage and there is no mature business model or profit model, most of them need external investment to continue their life, which leads to the difficulty in guaranteeing their service ability or continuous performance ability, and frankly speaking, their business is unstable
on the other hand, because it is not a professional end-to-end delivery or professional outsourcing, it has no mature methods, team and project management to ensure the efficient and complete delivery of a blockchain solution. So for buyers, it is easy to get out of control in the process of project development, or it is difficult to get satisfactory delivery results in the end
another common problem is that most customers do not know what to do with blockchain and how to combine their business to do a valuable and meaningful blockchain project. Under this kind of cognition, I blindly find a company to directly develop on the scheme, and it's easy to regret or even give up halfway after doing it. I see too many such projects, I can't figure out the situation, and I don't know what I want to do. It's easy to set up a blockchain. This kind of company usually does not have the ability of pre-sale business consulting, business analysis and planning, in other words, the ability to help you understand the situation. In a word, if you know what you want, it may be OK to find them. If you don't know, it's better to find a professional consulting company honestly
3. IT consulting and delivery companies, which are usually specialized in serving large customers in various instries, have a set of consulting and end-to-end delivery methods and team support. Well, there are not many blockchain businesses in these companies, because they are not limited to the narrow business of blockchain, such as Accenture or some domestic companies. However, ThoughtWorks is slightly different. It has a blockchain division, pre-sales consulting / business analysis services, and delivery services. Then it has blockchain projects in its own major customers in various instries. Automobile, finance, retail, energy, agriculture and so on
1. The underlying chain platform providers, such as ant / network, usually only provide chain and development tools, but the specific instry / scenario solutions and development delivery capabilities are limited, which is not their focus. They want to use blockchain to package and sell more cloud services
2. Blockchain solution companies usually provide blockchain solutions in their own familiar fields, but most of them are small and medium-sized teams or start-up teams. Most of them have little difference in blockchain technology capabilities and have a deep understanding of their respective fields
however, the biggest problem for such companies is that because the blockchain instry is still in its early stage and there is no mature business model or profit model, most of them need external investment to continue their life, which leads to the difficulty in guaranteeing their service ability or continuous performance ability, and frankly speaking, their business is unstable
on the other hand, because it is not a professional end-to-end delivery or professional outsourcing, it has no mature methods, team and project management to ensure the efficient and complete delivery of a blockchain solution. So for buyers, it is easy to get out of control in the process of project development, or it is difficult to get satisfactory delivery results in the end
another common problem is that most customers do not know what to do with blockchain and how to combine their business to do a valuable and meaningful blockchain project. Under this kind of cognition, I blindly find a company to directly develop on the scheme, and it's easy to regret or even give up halfway after doing it. I see too many such projects, I can't figure out the situation, and I don't know what I want to do. It's easy to set up a blockchain. This kind of company usually does not have the ability of pre-sale business consulting, business analysis and planning, in other words, the ability to help you understand the situation. In a word, if you know what you want, it may be OK to find them. If you don't know, it's better to find a professional consulting company honestly
3. IT consulting and delivery companies, which are usually specialized in serving large customers in various instries, have a set of consulting and end-to-end delivery methods and team support. Well, there are not many blockchain businesses in these companies, because they are not limited to the narrow business of blockchain, such as Accenture or some domestic companies. However, ThoughtWorks is slightly different. It has a blockchain division, pre-sales consulting / business analysis services, and delivery services. Then it has blockchain projects in its own major customers in various instries. Automobile, finance, retail, energy, agriculture and so on
2. In my opinion, wangchain technology is OK. They were established in early 2016. The instry includes more than ten instries including finance, energy, agriculture, medical care, ecation, etc., with a total of hundreds of customers. Their ability to get the recognition of so many customers also shows their ability.
3.
In the heat wave of "embracing blockchain" in 2018, who can take the lead in finding application scenarios and launching landing projects has become the most important part of the competition
among them, traceability and anti-counterfeiting is considered to be one of the most promising areas for blockchain implementation, and also the first area for giants to compete for blockchain technology implementation. In China, Chongqing, Hangzhou and other cities have taken the lead in "testing" the application of blockchain in food traceability; Tmall, Jingdong and other e-commerce giants also use blockchain technology in their respective systems for traceability and anti-counterfeiting
What are the advantages of blockchain traceability compared with traditional traceability? What pain points can blockchain technology solve in the traceability and anti-counterfeiting business? Can blockchain technology open a new chapter of traceability and anti-counterfeiting business
4. Since the blockchain upsurge in China, the whole instry has been exploring various landing scenarios. It can be said that there are so many blockchains, which have attracted countless entrepreneurs. So what are the advantages of blockchain in the supply chain finance? What are the pain points of the traditional model? What new business models can blockchain create to solve these problems? How should blockchain start-ups enter this field
Moody's, the world's famous bond rating agency, has given 127 blockchain cases, from points to transaction clearing, from document storage to supply chain management, from cross-border payment to supply chain finance, and various applications emerge in endlessly
among so many applications, supply chain finance has attracted much attention, and its commercialization has made rapid progress
this is because, first of all, the supply chain finance scene has a trillion level market scale, and the ceiling is high enough. Secondly, this scene naturally needs multi-party cooperation, but there is no traditional centralized institution in governance, and it needs to use blockchain to build trust. At the same time, technically, this scene does not need high concurrency, and the current blockchain technology can meet it
1. Supply chain finance is a trillion level market
supply chain finance refers to the comprehensive financial procts and services provided to the upstream and downstream enterprises in the supply chain by taking the core enterprises and their related upstream and downstream enterprises as a whole, relying on the core enterprises, taking real trade as the premise, and using the method of self compensating trade financing
according to the different financing collateral, financial institutions divide the supply chain finance into accounts receivable, prepayment and inventory financing, among which the scale of accounts receivable is particularly large< According to the data from the National Bureau of statistics, at the end of 2016, the accounts receivable of China's Instrial Enterprises above designated size were 12.6 trillion yuan, an increase of 10% over the same period of last year, which generated a huge financing demand for enterprises. Compared with the huge accounts receivable, China's annual commercial factoring volume was only about 200 billion yuan in 2015. It can be seen that there is still a large number of supply chain demand has not been met, so the development space of supply chain finance instry is huge
2. How to solve the pain point of supply chain finance with blockchain
pain point 1: the financing of small and medium-sized enterprises in the supply chain is difficult and the cost is high
because banks rely on the ability to control goods and regulate sales of core enterprises, for the sake of risk control, banks are only willing to provide factoring services to upstream suppliers (limited to primary suppliers) with direct accounts payable obligations of core enterprises, Or provide advance payment or inventory financing to its downstream distributors (primary suppliers)
as a result, the demand of secondary and tertiary suppliers / distributors with huge financing demand can not be met, the business volume of supply chain finance is limited, and SMEs can not get timely financing, which will easily lead to proct quality problems and damage the whole supply chain system
blockchain solution:
we issue and run a kind of digital bill on the blockchain, which can be split and transferred freely in the case of transparency and multi-party witness
this model is equivalent to making the credit in the whole business system conctive and traceable, providing financing opportunities for a large number of SMEs that could not have been financed, greatly improving the efficiency and flexibility of bill circulation, and recing the capital cost of SMEs
according to statistics, in the past, traditional supply chain finance companies could only provide financing services for about 15% of suppliers (small and medium-sized enterprises) in the supply chain, while after adopting blockchain technology, 85% of suppliers could enjoy financing convenience
pain point 2: as the main financing tool of supply chain finance, the use of commercial bills and bank bills at this stage is limited, and the transfer is difficult
the use of commercial bills is subject to the reputation of enterprises, and it is difficult to control the arrival time of bank bill discount. At the same time, if we want to transfer these bonds, the difficulty is not small
because in the actual financial operation, banks are very concerned about the legal effect of "Notice of transfer" of accounts receivable claims. If the core enterprise cannot sign back, banks will not be willing to extend credit. It is understood that the bank is very cautious about the legal effect of signing the "Notice of assignment" of creditor's rights, and even requires the legal representative of the core enterprise to go to the bank to sign it face to face. Obviously, this way of operation is extremely difficult
blockchain solution:
an alliance chain can be built between banks and core enterprises, which can be used by all member enterprises in the supply chain. By using the characteristics of multi-party signature and tamper proof of blockchain, the transfer of creditor's rights can get multi-party consensus and rece the difficulty of operation
of course, the system design should be able to achieve the legal notice effect of bond transfer. At the same time, the bank can trace the transactions of each node and draw a visible transaction flow chart
pain point 3: it is difficult for the supply chain financial platform / core enterprise system to prove its innocence, resulting in high risk control cost of the capital side
in the current supply chain financial business, banks or other capital sides are concerned about the authenticity of the transaction information itself in addition to the repayment ability and willingness of the enterprise, and the transaction information is recorded by the ERP system of the core enterprise
although ERP tampering is difficult, it is not absolutely credible. Banks are still worried that core enterprises and suppliers / dealers collude to modify information, so they need to invest manpower and material resources to verify the authenticity of the transaction, which increases the additional cost of risk control
blockchain solution:
as a "trusted machine", blockchain has the characteristics of traceability, consensus and decentralization, and the data on the blockchain has a time stamp, so even if the data of a node is modified, it can not cover the sky. Therefore, blockchain can provide an absolutely trusted environment and rece the cost of risk control on the capital side, Solve the bank's doubts about being tampered with information
3. How should blockchain companies cut into supply chain finance
in terms of market choice, we believe that blockchain start-ups should choose the segments with high enough ceiling, such as household appliances, automobile, retail, clothing, pharmaceutical instry, etc. On the one hand, these instries have a broad market, on the other hand, their supply chain management infrastructure is relatively perfect, and the early cost of block chain is relatively small
we believe that there are two modes for blockchain companies to enter supply chain finance
the first is to directly cooperate with core enterprises / platforms to provide them with the underlying solutions of blockchain. After accumulating enough data, they can provide financial services to the investors by building alliance chain Alliance chain mode)
in view of the fact that the blockchain itself can not solve the problem of risk control, enterprise level risk control still needs to focus on strong core enterprises at the present stage. At the same time, obtaining the support of core enterprises can also effectively solve the problem of customer acquisition, because a large core enterprise generally has thousands of various suppliers
at present, domestic blockchain companies start from core enterprises, including Bubi and Wanglu technology. Bubi has launched an alliance chain "Bunuo" for supply chain finance, linking banks, core enterprises and factoring companies. Bunuo is based in Guangzhou and Shenzhen, radiating southeast business, and digging deep into the field of supply chain finance, Previously, it signed a strategic cooperation agreement with Yigang
the second mode is to provide supply chain management services, such as traceability, tracking, visualization, etc., to integrate information flow, logistics and capital flow, and then engage in financial services Private chain mode)
this mode is equivalent to building an application scenario with blockchain. Just like Alipay, if Ma Yun did Alipay directly, it would be difficult to do so because there was no application scenario, so Taobao first served the real economy. With Taobao, Alipay emerged as a centralization trust scenario and grafted other applications on Alipay before accomplishments.
at present, among the domestic blockchain companies, bitse and food premium are the ones that adopt the supply chain service mode
for example, vechain provides a method of anti-counterfeiting and traceability, by implanting an NFC chip into each commodity, registering the commodity on the blockchain, so that it has a digital identity, and then recording all the information of the digital identity through the account book maintained jointly, so as to achieve the verification effect. At present, vechain procts have been connected with more than 10 instry benchmark customers, and millions of IDS are running on the chain
4. Build a supply chain financial exchange in three steps
from the perspective of implementation path, the application of blockchain in the field of supply chain finance can be realized in three steps
as a prerequisite, we need to build a blockchain + supply chain finance alliance, whose participants include supply chain finance platform, core enterprises, professional financial intermediaries, financiers, factoring institutions, etc
each participant needs to undertake corresponding obligations. For example, the platform is responsible for providing basic services such as supply chain information and customer information, while the core enterprise understands the instry situation, has control over the enterprises in the supply chain, and is responsible for risk control
professional financial intermediaries can integrate and analyze the platform information, and provide customized supply chain financial procts, such as personalized blockchain electronic bills. The fund side includes banks, Internet financial institutions and other customers who are responsible for docking the corresponding risk preference
after the establishment of alliance chain, we can start the three-step strategy
the first step is to put the data in the supply chain alliance on the chain, use the characteristics of blockchain to make it tamperable, and provide services such as data authentication and traceability
the second step is asset digitization, which turns warehouse receipts, contracts, and blockchain bills that can represent financing needs into digital assets, which are unique, tamper proof, and non reprocible
the third step is the transaction of digital assets. The supply chain financial platform will be transformed into a financial asset exchange, which will transform the non-standard enterprise loan demand into standardized financial procts for token, docking investment and financing demand, and concting value trading
finally, blockchain technology will effectively enhance the liquidity of supply chain financial assets, mobilize new financing tools and risk control system, help cover the long tail market of SME financing, and promote supply chain finance as a service.
Moody's, the world's famous bond rating agency, has given 127 blockchain cases, from points to transaction clearing, from document storage to supply chain management, from cross-border payment to supply chain finance, and various applications emerge in endlessly
among so many applications, supply chain finance has attracted much attention, and its commercialization has made rapid progress
this is because, first of all, the supply chain finance scene has a trillion level market scale, and the ceiling is high enough. Secondly, this scene naturally needs multi-party cooperation, but there is no traditional centralized institution in governance, and it needs to use blockchain to build trust. At the same time, technically, this scene does not need high concurrency, and the current blockchain technology can meet it
1. Supply chain finance is a trillion level market
supply chain finance refers to the comprehensive financial procts and services provided to the upstream and downstream enterprises in the supply chain by taking the core enterprises and their related upstream and downstream enterprises as a whole, relying on the core enterprises, taking real trade as the premise, and using the method of self compensating trade financing
according to the different financing collateral, financial institutions divide the supply chain finance into accounts receivable, prepayment and inventory financing, among which the scale of accounts receivable is particularly large< According to the data from the National Bureau of statistics, at the end of 2016, the accounts receivable of China's Instrial Enterprises above designated size were 12.6 trillion yuan, an increase of 10% over the same period of last year, which generated a huge financing demand for enterprises. Compared with the huge accounts receivable, China's annual commercial factoring volume was only about 200 billion yuan in 2015. It can be seen that there is still a large number of supply chain demand has not been met, so the development space of supply chain finance instry is huge
2. How to solve the pain point of supply chain finance with blockchain
pain point 1: the financing of small and medium-sized enterprises in the supply chain is difficult and the cost is high
because banks rely on the ability to control goods and regulate sales of core enterprises, for the sake of risk control, banks are only willing to provide factoring services to upstream suppliers (limited to primary suppliers) with direct accounts payable obligations of core enterprises, Or provide advance payment or inventory financing to its downstream distributors (primary suppliers)
as a result, the demand of secondary and tertiary suppliers / distributors with huge financing demand can not be met, the business volume of supply chain finance is limited, and SMEs can not get timely financing, which will easily lead to proct quality problems and damage the whole supply chain system
blockchain solution:
we issue and run a kind of digital bill on the blockchain, which can be split and transferred freely in the case of transparency and multi-party witness
this model is equivalent to making the credit in the whole business system conctive and traceable, providing financing opportunities for a large number of SMEs that could not have been financed, greatly improving the efficiency and flexibility of bill circulation, and recing the capital cost of SMEs
according to statistics, in the past, traditional supply chain finance companies could only provide financing services for about 15% of suppliers (small and medium-sized enterprises) in the supply chain, while after adopting blockchain technology, 85% of suppliers could enjoy financing convenience
pain point 2: as the main financing tool of supply chain finance, the use of commercial bills and bank bills at this stage is limited, and the transfer is difficult
the use of commercial bills is subject to the reputation of enterprises, and it is difficult to control the arrival time of bank bill discount. At the same time, if we want to transfer these bonds, the difficulty is not small
because in the actual financial operation, banks are very concerned about the legal effect of "Notice of transfer" of accounts receivable claims. If the core enterprise cannot sign back, banks will not be willing to extend credit. It is understood that the bank is very cautious about the legal effect of signing the "Notice of assignment" of creditor's rights, and even requires the legal representative of the core enterprise to go to the bank to sign it face to face. Obviously, this way of operation is extremely difficult
blockchain solution:
an alliance chain can be built between banks and core enterprises, which can be used by all member enterprises in the supply chain. By using the characteristics of multi-party signature and tamper proof of blockchain, the transfer of creditor's rights can get multi-party consensus and rece the difficulty of operation
of course, the system design should be able to achieve the legal notice effect of bond transfer. At the same time, the bank can trace the transactions of each node and draw a visible transaction flow chart
pain point 3: it is difficult for the supply chain financial platform / core enterprise system to prove its innocence, resulting in high risk control cost of the capital side
in the current supply chain financial business, banks or other capital sides are concerned about the authenticity of the transaction information itself in addition to the repayment ability and willingness of the enterprise, and the transaction information is recorded by the ERP system of the core enterprise
although ERP tampering is difficult, it is not absolutely credible. Banks are still worried that core enterprises and suppliers / dealers collude to modify information, so they need to invest manpower and material resources to verify the authenticity of the transaction, which increases the additional cost of risk control
blockchain solution:
as a "trusted machine", blockchain has the characteristics of traceability, consensus and decentralization, and the data on the blockchain has a time stamp, so even if the data of a node is modified, it can not cover the sky. Therefore, blockchain can provide an absolutely trusted environment and rece the cost of risk control on the capital side, Solve the bank's doubts about being tampered with information
3. How should blockchain companies cut into supply chain finance
in terms of market choice, we believe that blockchain start-ups should choose the segments with high enough ceiling, such as household appliances, automobile, retail, clothing, pharmaceutical instry, etc. On the one hand, these instries have a broad market, on the other hand, their supply chain management infrastructure is relatively perfect, and the early cost of block chain is relatively small
we believe that there are two modes for blockchain companies to enter supply chain finance
the first is to directly cooperate with core enterprises / platforms to provide them with the underlying solutions of blockchain. After accumulating enough data, they can provide financial services to the investors by building alliance chain Alliance chain mode)
in view of the fact that the blockchain itself can not solve the problem of risk control, enterprise level risk control still needs to focus on strong core enterprises at the present stage. At the same time, obtaining the support of core enterprises can also effectively solve the problem of customer acquisition, because a large core enterprise generally has thousands of various suppliers
at present, domestic blockchain companies start from core enterprises, including Bubi and Wanglu technology. Bubi has launched an alliance chain "Bunuo" for supply chain finance, linking banks, core enterprises and factoring companies. Bunuo is based in Guangzhou and Shenzhen, radiating southeast business, and digging deep into the field of supply chain finance, Previously, it signed a strategic cooperation agreement with Yigang
the second mode is to provide supply chain management services, such as traceability, tracking, visualization, etc., to integrate information flow, logistics and capital flow, and then engage in financial services Private chain mode)
this mode is equivalent to building an application scenario with blockchain. Just like Alipay, if Ma Yun did Alipay directly, it would be difficult to do so because there was no application scenario, so Taobao first served the real economy. With Taobao, Alipay emerged as a centralization trust scenario and grafted other applications on Alipay before accomplishments.
at present, among the domestic blockchain companies, bitse and food premium are the ones that adopt the supply chain service mode
for example, vechain provides a method of anti-counterfeiting and traceability, by implanting an NFC chip into each commodity, registering the commodity on the blockchain, so that it has a digital identity, and then recording all the information of the digital identity through the account book maintained jointly, so as to achieve the verification effect. At present, vechain procts have been connected with more than 10 instry benchmark customers, and millions of IDS are running on the chain
4. Build a supply chain financial exchange in three steps
from the perspective of implementation path, the application of blockchain in the field of supply chain finance can be realized in three steps
as a prerequisite, we need to build a blockchain + supply chain finance alliance, whose participants include supply chain finance platform, core enterprises, professional financial intermediaries, financiers, factoring institutions, etc
each participant needs to undertake corresponding obligations. For example, the platform is responsible for providing basic services such as supply chain information and customer information, while the core enterprise understands the instry situation, has control over the enterprises in the supply chain, and is responsible for risk control
professional financial intermediaries can integrate and analyze the platform information, and provide customized supply chain financial procts, such as personalized blockchain electronic bills. The fund side includes banks, Internet financial institutions and other customers who are responsible for docking the corresponding risk preference
after the establishment of alliance chain, we can start the three-step strategy
the first step is to put the data in the supply chain alliance on the chain, use the characteristics of blockchain to make it tamperable, and provide services such as data authentication and traceability
the second step is asset digitization, which turns warehouse receipts, contracts, and blockchain bills that can represent financing needs into digital assets, which are unique, tamper proof, and non reprocible
the third step is the transaction of digital assets. The supply chain financial platform will be transformed into a financial asset exchange, which will transform the non-standard enterprise loan demand into standardized financial procts for token, docking investment and financing demand, and concting value trading
finally, blockchain technology will effectively enhance the liquidity of supply chain financial assets, mobilize new financing tools and risk control system, help cover the long tail market of SME financing, and promote supply chain finance as a service.
5. The upgrading of blockchain technology enables blockchain applications to achieve regulatory
in the Internet era, computers have proposed many ways of trusted computing for a long time, that is, any blockchain technology node adopts the mole of trusted computing. Therefore, trusted computing can make it easier to upgrade and iterate technologies in distributed networks
in terms of the real name system of blockchain technology, there is a blockchain Technology Laboratory in the United States, and they have put forward many technical solutions for the real name system. For example, the current blockchain technology is point-to-point. In many countries, such as South Korea, each of them has an e-Certificate, and they need to use the real name e-Certificate for signature in the transaction. Of course, there is a simpler solution. We can store the IP address of the whole device as part of the transaction in the blockchain application
in this way, the transaction of the whole blockchain technology can realize the real name system of technology. So this is an optional real name system. We can build a real name blockchain application network or an anonymous blockchain application network
Super key is also a significant progress in the development of blockchain technology. Because it is a distributed network, how can we supervise and control it? Cryptography, we call it multi signature
we (yunbokeji) design different blockchain application networks. If it is a blockchain application network used by a bank, we can design a super key. The keys of all nodes must be combined with the super key to generate wallets
then, the super key should be in the hands of regulators or some institutions, who can have limited control over blockchain applications. For example, the data on the current blockchain application can not be deleted, so the super key actually allows the authority to modify the distributed network
so what kind of technology is blockchain:
(1) distributed decentralization,
(2) no need to trust the system,
(3) tamper proof and encryption security. I know these words separately, but what do they mean together
1. Distributed and decentralized. It's all about this on the Internet. There's no need to say more. In short, there's no need for a central server. Everyone's data is obtained from this server. Instead, the data is put on N networked devices, and everyone can download and store it
2. There is no need to trust the system. Do you believe in banks? Because the bank is recognized by the state, the blockchain realizes a trust mode without the need of a third party. It uses n devices on the Internet to store data, which can be verified by everyone. As long as more than half of the people think you're right, you're right. No one or organization can modify more than half of the content on the Internet. If you don't believe in yourself, congratulations. You are a great philosopher
3. Tamper proof and encryption security
the blockchain adopts a series of technologies, such as sha256 and ripemd160, to ensure tamper proof and encryption security. For example, 01011000111110 represents a character. The algorithm requires four bits to be shifted to the left, supplemented by zeros, four bits to the left, and four zeros to the right, How to dece the original number according to the result? Of course, this is just a simple example.
in the Internet era, computers have proposed many ways of trusted computing for a long time, that is, any blockchain technology node adopts the mole of trusted computing. Therefore, trusted computing can make it easier to upgrade and iterate technologies in distributed networks
in terms of the real name system of blockchain technology, there is a blockchain Technology Laboratory in the United States, and they have put forward many technical solutions for the real name system. For example, the current blockchain technology is point-to-point. In many countries, such as South Korea, each of them has an e-Certificate, and they need to use the real name e-Certificate for signature in the transaction. Of course, there is a simpler solution. We can store the IP address of the whole device as part of the transaction in the blockchain application
in this way, the transaction of the whole blockchain technology can realize the real name system of technology. So this is an optional real name system. We can build a real name blockchain application network or an anonymous blockchain application network
Super key is also a significant progress in the development of blockchain technology. Because it is a distributed network, how can we supervise and control it? Cryptography, we call it multi signature
we (yunbokeji) design different blockchain application networks. If it is a blockchain application network used by a bank, we can design a super key. The keys of all nodes must be combined with the super key to generate wallets
then, the super key should be in the hands of regulators or some institutions, who can have limited control over blockchain applications. For example, the data on the current blockchain application can not be deleted, so the super key actually allows the authority to modify the distributed network
so what kind of technology is blockchain:
(1) distributed decentralization,
(2) no need to trust the system,
(3) tamper proof and encryption security. I know these words separately, but what do they mean together
1. Distributed and decentralized. It's all about this on the Internet. There's no need to say more. In short, there's no need for a central server. Everyone's data is obtained from this server. Instead, the data is put on N networked devices, and everyone can download and store it
2. There is no need to trust the system. Do you believe in banks? Because the bank is recognized by the state, the blockchain realizes a trust mode without the need of a third party. It uses n devices on the Internet to store data, which can be verified by everyone. As long as more than half of the people think you're right, you're right. No one or organization can modify more than half of the content on the Internet. If you don't believe in yourself, congratulations. You are a great philosopher
3. Tamper proof and encryption security
the blockchain adopts a series of technologies, such as sha256 and ripemd160, to ensure tamper proof and encryption security. For example, 01011000111110 represents a character. The algorithm requires four bits to be shifted to the left, supplemented by zeros, four bits to the left, and four zeros to the right, How to dece the original number according to the result? Of course, this is just a simple example.
6. In the face of the shortage of resources and the emergence of safety problems, the development trend of mining engineering specialty presents both difficulties and opportunities; Graates can be engaged in coal mine, iron ore, gold mine, gypsum mine and railway design and transformation management, also can go to metallurgy, non-ferrous, chemical, nuclear instry, non-metallic and coal mining and water conservancy, railway, underground, engineering and environmental protection departments of proction and development, scientific research and teaching work. After graation, students majoring in mining engineering can engage in scientific research in mining area development planning, mine (open pit, underground) design, mine safety technology and engineering design, supervision, proction technology management, etc. The employment positions of mining engineering graates include: Mining Engineer, geological engineer, mining engineering, sales engineer, beneficiation engineer, mining technician, mine manager, Surveying Engineer, mining geological engineer, technician, geological environment engineer, safety engineer, etc.
7. Chongqing jinwowo analysis: the ultimate goal of blockchain technology is to provide real world commercial solutions
by allowing blockchains to connect to independent side chains, enterprises will find that they can create customized solutions to meet business needs.
by allowing blockchains to connect to independent side chains, enterprises will find that they can create customized solutions to meet business needs.
8. Advocates, fans and investors in the blockchain can claim that they support the technology for dozens or even hundreds of reasons. As an investment vehicle, 2018 will be a great year for anyone who supports cryptocurrency. Entrepreneurs in this ecosystem are realizing their great potential in many ways. Use the inherent characteristics and capabilities of these technologies to destroy and create value in many instries
in various instries, blockchain and "smart contract" technology have begun to play an active role in dozens of value chains, which are far away from our own cryptocurrency ecosystem. Until recently, I only heard vaguely; Blockchain; And 39; Cryptocurrency; Companies that have been involved in this field for many years now benefit from the work of entrepreneurs.
in various instries, blockchain and "smart contract" technology have begun to play an active role in dozens of value chains, which are far away from our own cryptocurrency ecosystem. Until recently, I only heard vaguely; Blockchain; And 39; Cryptocurrency; Companies that have been involved in this field for many years now benefit from the work of entrepreneurs.
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