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Blockchain Hubei
Publish: 2021-05-03 06:14:46
1. The name blockchain as a "machine of trust" originated from an article in the economist. From the macro level, the Internet is a network for transmitting information. Today, we can shop through the Internet and send wechat. Now many technical experts and people in the traditional financial instry all over the world regard blockchain as a revolutionary technology because blockchain is a network for transmitting transactions. Therefore, a famous VC in the United States says that blockchain is the underlying protocol of finance
suppose that one user a wants to transfer money to another user B, what are the differences between traditional financial networks and blockchain networks? In today's existing financial network, such as transferring money from ICBC to China Merchants Bank, users can first access the database through ICBC's online banking or ATM, and the database can go through the clearing company of the blockchain center to the database of another bank, and then users receive the money. If the transaction is made on the blockchain, first of all, the transaction will be broadcast to a decentralized network or P2P network. The transaction will be verified by the bookkeeper elected by some mathematical mechanism on the network to verify whether the transaction is true. It ensures that the transaction can not be forged in principle through mathematical algorithm. When the bookkeeper agrees that the transaction is valid, it will form an account book and broadcast the account book to all people on the network, including the payee of course
centralized network, which is the earliest and most primitive network. Today's Internet is a distributed network. It has many small centers connected by backbone network to form a distributed network. The blockchain network is actually a very inefficient network, because the network has a lot of data rendancy, and the transmission is not very effective. But with the development of time, after the transmission becomes stronger, the rendancy problem is not a big problem
there is no strong center in the blockchain network to control or tamper with the data in the network. We can understand that the decentralized network is a kind of network built on the distributed network. In many countries, such as many reports made by the Bank of England, blockchain is also translated into distributed books. Blockchain originated from bitcoin. Now many traditional financial enterprises begin to study blockchain and try blockchain, such as ripple and R3 alliance
if we carefully analyze the role of distributed ledger such as blockchain, we can find that it has many applications. For example, in the field of personal finance, there are many payment companies and remittance companies based on blockchain. At the political level, there are those who apply blockchain technology to elections, which can technically ensure that votes cannot be tampered with. In the digital money field, England bank uses block chain technology to develop another digital currency, which is different from the balance of Alipay and internet bank. Of course, it is not an uncontrolled currency like bitcoin. Its issuing right is still in the hands of the central bank, but its clearing and circulation network is built on the opened blockchain network. Its advantages, such as our WeChat payment and Alipay can transfer each other. For example, when I run a parking card, the original system naturally forms some payment barriers, and the underlying digital technology can eliminate these barriers. IBM and others are trying to do this
another example is R3, which is an excellent company in the world. They try to build a clearing network for credit bonds and bank bonds. Domestic clearing companies are all sincere clearing companies. In fact, there is no such clearing center in the world. First, several large domestic banks carry out communication protocols, and then small banks make agreements in them. It's very complicated. Because there is no strong center in the world that can build an international settlement system, not even the world bank. Enterprises like R3 try to use technology to do it. In the world, countries do not trust each other, or banks trust each other. But we can all believe in technology. Blockchain is such a technology
we have also done some innovative work in this field. We started with the first application of bitcoin in blockchain. Our proct is called okcoin bank. This year, we launched a new blockchain financial network oklink. Oklink procts are mainly used for small amount of international remittance in Hong Kong
as we all know, there is a multi-layer capital flow in the world, and the separation of capital flow and information flow leads to a very high cost of international remittance. There is a prediction in the world that many people work outside and remit their money back to US $700 billion a year. A single sum is small, and the average handling charge is 10%. For example, Filipino domestic helpers earn 4000 Hong Kong dollars a month in Hong Kong, but they don't have 800 yuan when they get home
okcoin has put many companies in the blockchain, which can make them clear efficiently and at low cost, but they will not make false accounts, and they are not able to run. At present, we have opened up more than ten countries in the world. At present, there is no China. Only banks in China can legally transfer money. Blockchain has helped our enterprise to establish a credit in the world, which is not the credit of our company or investors, but the credit of technology. Therefore, we have some partners in Africa and Southeast Asia who are willing to believe in the security and resonance of the network
at the same time, we have an app at the C end to distribute remittance orders from all over the world to these remittance enterprises. At present, we are commercializing the blockchain operation network in the world. Every month, we have millions of dollars of processing amount, and all countries in the world are in compliance
summarize what blockchain technology can do. Blockchain technology is actually a technology to open your account book to the public. When do we need to open our books to the public? When others don't believe in your platform, its application is more suitable for areas with weak credibility in the short term. But in the long run, units with their own credit, such as NASDAQ and the New York Stock Exchange, will also use blockchain technology in the future. Because the current cost is very high, in the long run, such units with strong credit may use blockchain technology to rece costs in the future (Netease News)
of course, bitcoin, Ethereum, and decent are the same.
suppose that one user a wants to transfer money to another user B, what are the differences between traditional financial networks and blockchain networks? In today's existing financial network, such as transferring money from ICBC to China Merchants Bank, users can first access the database through ICBC's online banking or ATM, and the database can go through the clearing company of the blockchain center to the database of another bank, and then users receive the money. If the transaction is made on the blockchain, first of all, the transaction will be broadcast to a decentralized network or P2P network. The transaction will be verified by the bookkeeper elected by some mathematical mechanism on the network to verify whether the transaction is true. It ensures that the transaction can not be forged in principle through mathematical algorithm. When the bookkeeper agrees that the transaction is valid, it will form an account book and broadcast the account book to all people on the network, including the payee of course
centralized network, which is the earliest and most primitive network. Today's Internet is a distributed network. It has many small centers connected by backbone network to form a distributed network. The blockchain network is actually a very inefficient network, because the network has a lot of data rendancy, and the transmission is not very effective. But with the development of time, after the transmission becomes stronger, the rendancy problem is not a big problem
there is no strong center in the blockchain network to control or tamper with the data in the network. We can understand that the decentralized network is a kind of network built on the distributed network. In many countries, such as many reports made by the Bank of England, blockchain is also translated into distributed books. Blockchain originated from bitcoin. Now many traditional financial enterprises begin to study blockchain and try blockchain, such as ripple and R3 alliance
if we carefully analyze the role of distributed ledger such as blockchain, we can find that it has many applications. For example, in the field of personal finance, there are many payment companies and remittance companies based on blockchain. At the political level, there are those who apply blockchain technology to elections, which can technically ensure that votes cannot be tampered with. In the digital money field, England bank uses block chain technology to develop another digital currency, which is different from the balance of Alipay and internet bank. Of course, it is not an uncontrolled currency like bitcoin. Its issuing right is still in the hands of the central bank, but its clearing and circulation network is built on the opened blockchain network. Its advantages, such as our WeChat payment and Alipay can transfer each other. For example, when I run a parking card, the original system naturally forms some payment barriers, and the underlying digital technology can eliminate these barriers. IBM and others are trying to do this
another example is R3, which is an excellent company in the world. They try to build a clearing network for credit bonds and bank bonds. Domestic clearing companies are all sincere clearing companies. In fact, there is no such clearing center in the world. First, several large domestic banks carry out communication protocols, and then small banks make agreements in them. It's very complicated. Because there is no strong center in the world that can build an international settlement system, not even the world bank. Enterprises like R3 try to use technology to do it. In the world, countries do not trust each other, or banks trust each other. But we can all believe in technology. Blockchain is such a technology
we have also done some innovative work in this field. We started with the first application of bitcoin in blockchain. Our proct is called okcoin bank. This year, we launched a new blockchain financial network oklink. Oklink procts are mainly used for small amount of international remittance in Hong Kong
as we all know, there is a multi-layer capital flow in the world, and the separation of capital flow and information flow leads to a very high cost of international remittance. There is a prediction in the world that many people work outside and remit their money back to US $700 billion a year. A single sum is small, and the average handling charge is 10%. For example, Filipino domestic helpers earn 4000 Hong Kong dollars a month in Hong Kong, but they don't have 800 yuan when they get home
okcoin has put many companies in the blockchain, which can make them clear efficiently and at low cost, but they will not make false accounts, and they are not able to run. At present, we have opened up more than ten countries in the world. At present, there is no China. Only banks in China can legally transfer money. Blockchain has helped our enterprise to establish a credit in the world, which is not the credit of our company or investors, but the credit of technology. Therefore, we have some partners in Africa and Southeast Asia who are willing to believe in the security and resonance of the network
at the same time, we have an app at the C end to distribute remittance orders from all over the world to these remittance enterprises. At present, we are commercializing the blockchain operation network in the world. Every month, we have millions of dollars of processing amount, and all countries in the world are in compliance
summarize what blockchain technology can do. Blockchain technology is actually a technology to open your account book to the public. When do we need to open our books to the public? When others don't believe in your platform, its application is more suitable for areas with weak credibility in the short term. But in the long run, units with their own credit, such as NASDAQ and the New York Stock Exchange, will also use blockchain technology in the future. Because the current cost is very high, in the long run, such units with strong credit may use blockchain technology to rece costs in the future (Netease News)
of course, bitcoin, Ethereum, and decent are the same.
2. Not so good. Under the banner of blockchain, there is no blockchain technology. It only sells mining machines, and the price is thousands of yuan higher than the official website of mining machines. Customers also have to pay the electricity fee, which is about 30 cents per hour. The profit of a 14T ant miner is 14 yuan a day. If the electricity fee is dected, the profit will be about 4 yuan. If you buy a miner at 6000 yuan and make a profit of 4 yuan a day, how long can you get back the cost. The company basically depends on deception. It's related to the company. It's all owned by relatives and friends. Don't be too hot headed if you think about it yourself
3. Blockchain has developed rapidly in the past two years. Many people have begun to contact this instry. After all, the salary is high. It's easy to find a job in Hubei. I'm really worried. You can go to the self chain college to see that they have a one-stop process of blockchain training and employment.
4.
Zhongke blockchain technology Hubei Co., Ltd. is a limited liability company (invested or controlled by natural person) registered on November 14, 2018, with its registered address at room 105, building 3, Yinhu Instrial Park, south of Xiaohan Avenue, Xiaogan City
the unified social credit code / registration number of Zhongke blockchain technology Hubei Co., Ltd. is 91420900ma496ltc5n, and the enterprise legal person is Yang Yanwei
the business scope of Zhongke blockchain technology Hubei Co., Ltd. is: computer software technology development, technical services, technical consultation, technology application and technology transfer; Marketing planning; Network information technology, database technology, encryption algorithm technology, cloud computing technology, big data technology research and development and technology promotion; Supply chain and Internet of things technology, artificial intelligence technology, robot technology development, technology consulting and technology transfer; Computer network game research and development and operation; Internet information service; Organization and planning of sports cultural exchange activities (excluding performances); Business information consultation (excluding business investigation, investment consultation and intermediary services, and not engaging in the trading of securities, futures, financial management and other financial derivatives); Enterprise management consulting; Ecation information consultation (excluding ecation, training and intermediary services); Invest in the computer instry with its own funds Projects that need to be approved according to law can be operated only after being approved by relevant departments)
view more information and information of Zhongke blockchain technology Hubei Co., Ltd. through aiqicha
5. You can go up, but you can't get close to the window.
6. RSA algorithm is very simple, summarized as follows:
find two prime numbers P and Q
take n = P * q
take t = (p-1) * (Q-1)
take any number e, which is required to meet E & lt; T and E and T are mutually prime (that is, the greatest common factor is 1)
take d * e% t = = 1
so that three numbers are finally obtained: n d e
let the message be the number m (M & lt; n)
set C = (m * * d)% n to get the encrypted message, C
set M = (c * * e)% n to M = = m, so as to complete the decryption of C
note: * * denotes the power, and D and E in the above two expressions are interchangeable
in symmetric encryption:
n d two numbers constitute a public key, which can be told to others
n e two numbers constitute the private key, which is reserved by E and not let anyone know
the information sent to others is encrypted by E. as long as others can use d to decrypt, it will prove that the information is sent by you, which constitutes a signature mechanism
when someone sends you a message, use d encryption, so that only you who own e can decrypt it
the security of RSA is that for a large number n, there is no effective method to decompose it
so that e cannot be obtained when n d is known; It is also impossible to
get d when n e is known<
RSA is simple and elegant, but its computing speed is relatively slow. Generally, RSA is not used to encrypt all information directly in encryption,
the most common case is to generate a symmetric encryption key randomly, then use symmetric encryption algorithm to encrypt the information, and then use
RSA to encrypt the encryption key
finally, it should be noted that the current n less than 1024 bits has been proved to be unsafe
in your own use, do not use RSA less than 1024 bits, it is better to use 2048 bits.
find two prime numbers P and Q
take n = P * q
take t = (p-1) * (Q-1)
take any number e, which is required to meet E & lt; T and E and T are mutually prime (that is, the greatest common factor is 1)
take d * e% t = = 1
so that three numbers are finally obtained: n d e
let the message be the number m (M & lt; n)
set C = (m * * d)% n to get the encrypted message, C
set M = (c * * e)% n to M = = m, so as to complete the decryption of C
note: * * denotes the power, and D and E in the above two expressions are interchangeable
in symmetric encryption:
n d two numbers constitute a public key, which can be told to others
n e two numbers constitute the private key, which is reserved by E and not let anyone know
the information sent to others is encrypted by E. as long as others can use d to decrypt, it will prove that the information is sent by you, which constitutes a signature mechanism
when someone sends you a message, use d encryption, so that only you who own e can decrypt it
the security of RSA is that for a large number n, there is no effective method to decompose it
so that e cannot be obtained when n d is known; It is also impossible to
get d when n e is known<
RSA is simple and elegant, but its computing speed is relatively slow. Generally, RSA is not used to encrypt all information directly in encryption,
the most common case is to generate a symmetric encryption key randomly, then use symmetric encryption algorithm to encrypt the information, and then use
RSA to encrypt the encryption key
finally, it should be noted that the current n less than 1024 bits has been proved to be unsafe
in your own use, do not use RSA less than 1024 bits, it is better to use 2048 bits.
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