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Distributed storage based on blockchain
Publish: 2021-04-22 21:08:00
1. blockchain is a kind of distributed ledger technology. By safely storing information across multiple systems, and by creating reliable "truth" sources, it realizes the intermediary of so-called "trust intermediary", so as to realize point-to-point transactions. Relying on secure distributed storage for verification brings a paradigm shift of trust building, which has a profound impact
in the future, jinwowo network technology will continue to tap the value of blockchain technology in the commercial field, give full play to the advantages of big data services, add value to user behavior, break the ice for the development of small and medium-sized enterprises, and build a real, efficient, safe and honest Internet community of destiny.
in the future, jinwowo network technology will continue to tap the value of blockchain technology in the commercial field, give full play to the advantages of big data services, add value to user behavior, break the ice for the development of small and medium-sized enterprises, and build a real, efficient, safe and honest Internet community of destiny.
2. Blockchain distributed storage is a kind of decentralized storage, which does not store data on one or more specific nodes, but scattered storage
3. One is that each node of the blockchain stores complete data according to the block chain structure. Traditional distributed storage generally divides the data into multiple copies according to certain rules
Second, the storage of each node in the blockchain is independent and has the same status, which relies on the consensus mechanism to ensure the consistency of storage, while the traditional distributed storage generally synchronizes data from the central node to other backup nodes
data nodes can be different physical machines or different instances in the cloud
the above is the difference between the blockchain technology of jinwowo network analysis and the traditional distributed storage, for reference.
Second, the storage of each node in the blockchain is independent and has the same status, which relies on the consensus mechanism to ensure the consistency of storage, while the traditional distributed storage generally synchronizes data from the central node to other backup nodes
data nodes can be different physical machines or different instances in the cloud
the above is the difference between the blockchain technology of jinwowo network analysis and the traditional distributed storage, for reference.
4. Centralized storage and distributed storage
most of the current storage is centralized storage, which is stored in the traditional centralized server. If the server goes down or fails, or the server stops operating, a lot of data will be lost
blockchain, as a distributed database, can solve this problem well. This is determined by the technical characteristics of blockchain. The digital records on the blockchain can not be tampered with or forged. The smart contract enables us to work together more efficiently, so as to establish a credible digital economic order, improve the efficiency of data flow, break the isolated island of data, and create a new storage mode.
most of the current storage is centralized storage, which is stored in the traditional centralized server. If the server goes down or fails, or the server stops operating, a lot of data will be lost
blockchain, as a distributed database, can solve this problem well. This is determined by the technical characteristics of blockchain. The digital records on the blockchain can not be tampered with or forged. The smart contract enables us to work together more efficiently, so as to establish a credible digital economic order, improve the efficiency of data flow, break the isolated island of data, and create a new storage mode.
5. IBM, Microsoft, Oracle, Accenture, Tencent, Alibaba, Jingdong, network, etc. have all done it. Many large banks, including Ping An Bank, have also launched their own blockchain solution platforms or solutions. However, it should be added that large companies do not mean strong technical strength, because blockchain is still in the hot stage of concept in the world. Unicorn blockchain companies are likely to emerge in the future, such as EOS abroad and Binhe Yun patent technology and application landing in China are much higher than those of large companies.
6. There are two ways to connect the core switch to the general switch in the computer room:
the first way is through the "optical fiber + optical mole", that is, the general switch is connected to the optical port of the core switch through the uplink optical port, combined with the optical mole and optical fiber
the second way is through the network cable, which generally requires the core switch to have an optical multiplexer port. At this time, the general switch can directly connect with the RJ45 port on the core switch through the network cable.
the first way is through the "optical fiber + optical mole", that is, the general switch is connected to the optical port of the core switch through the uplink optical port, combined with the optical mole and optical fiber
the second way is through the network cable, which generally requires the core switch to have an optical multiplexer port. At this time, the general switch can directly connect with the RJ45 port on the core switch through the network cable.
7. What is risk? Futures contracts provide leverage (inversely proportional to the guarantee rate). The volatility of underlying assets determines the volatility of futures
it's normal for the stock market to fluctuate by 30-40% a year, and the fluctuation of exchange rate by more than 20% is very large. However, if the leverage ratio is included, the profit and loss fluctuation of foreign exchange futures may be much higher than that of stock market futures, but these are just numbers games< In the end, derivatives only provide a mathematical calculation.
it's normal for the stock market to fluctuate by 30-40% a year, and the fluctuation of exchange rate by more than 20% is very large. However, if the leverage ratio is included, the profit and loss fluctuation of foreign exchange futures may be much higher than that of stock market futures, but these are just numbers games< In the end, derivatives only provide a mathematical calculation.
8.
the margin ratio and handling charge are stipulated by the exchange, but different companies add different amount on the exchange
our company adds the least amount: if the margin is not added, the handling charge is only 0.01 0.01
9. How blockchain can bring about a "revolution" in personal data protection
US media disclosed on the evening of 17 local time that Cambridge analysis, a British company deeply involved in the scandal of abusing personal privacy data, originally planned to launch a personal privacy data storage service and sell it in the form of encrypted currency through blockchain technology. The concept of personal information encryption and monetization is not new. The key to this idea is everyone's autonomy of personal information. Some people in the instry believe that blockchain technology may bring a "revolution" in personal data protection
in the era of big data, personal data is considered as precious as gold. Personal data leakage is worrying, but the vast majority of people can't be cut off from the Internet because of the fear of data collection. At present, enterprises, schools, hotels, social networking sites, etc., which are responsible for keeping personal information, often fail to take the responsibility. Experts believe that blockchain technology, as a "middleware" with encryption, trust, point-to-point, and difficult to tamper, is expected to solve this problem
the emergence of blockchain technology makes it possible for everyone to control their own personal data by transferring the control of personal data from Internet companies to users themselves. Through it, users' personal data can be associated with their personal digital ID card. Users can choose whether their digital ID card is anonymous, pseudonym or public. They can also access the blockchain application platform from any device anytime and anywhere to control their Internet personal data
for example, the information on the block chain of someone's ID number may be converted to a series of ciphertext, and the face image information is also encrypted. When he checked in at the hotel, he only sent the cipher ID number to the hotel through application. The hotel compares the information with the encrypted data on the block chain application, and does not need to know any real information of him, but as long as the encrypted data match the result, it can guarantee the check in.
at the same time, the development of big data and artificial intelligence needs a lot of user data resources. Users can selectively sell their personal data as cryptocurrency and receive certain returns. For example, if e-commerce needs user data to develop a new application, users can choose to sell their own shopping history data, but their address, account number and other information can still be kept confidential
in the field of gene sequencing, blockchain applications have begun to challenge the "way to make money" of traditional gene sequencing companies selling personal data
in recent years, gene sequencing services for ordinary people have been popular. Take "23 and me" chromosome biotechnology company in the United States as an example. Consumers only need less than $100 and a few mouthfuls of saliva to get family genetic information. If they pay another $80, they can get in-depth analysis of genetic health risks and other aspects based on the original data. However, the company was not satisfied with the revenue from sequencing services. It also sold millions of customer genetic data to pharmaceutical companies by classification and packaging. The Parkinson's disease data sold in early 2015 alone amounted to $60 million. Many similar biotech companies, while obtaining service income from consumers, resell the data of consumers to "earn double money"
in February this year, George church, a geneticist at Harvard University in the United States, founded "nebula gene", hoping to break this pattern through blockchain technology. The company plans to complete the whole genome sequencing at a price of less than US $1000. The cost is borne by the customers. In return, the customers can intuitively understand their own genetic information and corresponding disease risks, and also have the autonomy of sequencing data. The security of genetic information will be guaranteed by blockchain technology. At the same time, it will be encrypted and monetized, and it will be stored and sold according to customers' wishes
the company plans to launch a kind of "Xingyun coin" as the trading medium. Customers can exchange their genetic information into "Xingyun coin", and they can also use "Xingyun coin" to pay for their own sequencing expenses. Pharmaceutical companies can purchase "Xingyun coin" with traditional currency to obtain the genetic information data of ordinary people. The whole trading process is completed through the blockchain platform, Encryption is transparent and secure
chech said that after integrating the cost of sequencing, genetic information protection, data management, genome big data processing and other factors, blockchain technology allows more people to truly "own" their own genetic information.
US media disclosed on the evening of 17 local time that Cambridge analysis, a British company deeply involved in the scandal of abusing personal privacy data, originally planned to launch a personal privacy data storage service and sell it in the form of encrypted currency through blockchain technology. The concept of personal information encryption and monetization is not new. The key to this idea is everyone's autonomy of personal information. Some people in the instry believe that blockchain technology may bring a "revolution" in personal data protection
in the era of big data, personal data is considered as precious as gold. Personal data leakage is worrying, but the vast majority of people can't be cut off from the Internet because of the fear of data collection. At present, enterprises, schools, hotels, social networking sites, etc., which are responsible for keeping personal information, often fail to take the responsibility. Experts believe that blockchain technology, as a "middleware" with encryption, trust, point-to-point, and difficult to tamper, is expected to solve this problem
the emergence of blockchain technology makes it possible for everyone to control their own personal data by transferring the control of personal data from Internet companies to users themselves. Through it, users' personal data can be associated with their personal digital ID card. Users can choose whether their digital ID card is anonymous, pseudonym or public. They can also access the blockchain application platform from any device anytime and anywhere to control their Internet personal data
for example, the information on the block chain of someone's ID number may be converted to a series of ciphertext, and the face image information is also encrypted. When he checked in at the hotel, he only sent the cipher ID number to the hotel through application. The hotel compares the information with the encrypted data on the block chain application, and does not need to know any real information of him, but as long as the encrypted data match the result, it can guarantee the check in.
at the same time, the development of big data and artificial intelligence needs a lot of user data resources. Users can selectively sell their personal data as cryptocurrency and receive certain returns. For example, if e-commerce needs user data to develop a new application, users can choose to sell their own shopping history data, but their address, account number and other information can still be kept confidential
in the field of gene sequencing, blockchain applications have begun to challenge the "way to make money" of traditional gene sequencing companies selling personal data
in recent years, gene sequencing services for ordinary people have been popular. Take "23 and me" chromosome biotechnology company in the United States as an example. Consumers only need less than $100 and a few mouthfuls of saliva to get family genetic information. If they pay another $80, they can get in-depth analysis of genetic health risks and other aspects based on the original data. However, the company was not satisfied with the revenue from sequencing services. It also sold millions of customer genetic data to pharmaceutical companies by classification and packaging. The Parkinson's disease data sold in early 2015 alone amounted to $60 million. Many similar biotech companies, while obtaining service income from consumers, resell the data of consumers to "earn double money"
in February this year, George church, a geneticist at Harvard University in the United States, founded "nebula gene", hoping to break this pattern through blockchain technology. The company plans to complete the whole genome sequencing at a price of less than US $1000. The cost is borne by the customers. In return, the customers can intuitively understand their own genetic information and corresponding disease risks, and also have the autonomy of sequencing data. The security of genetic information will be guaranteed by blockchain technology. At the same time, it will be encrypted and monetized, and it will be stored and sold according to customers' wishes
the company plans to launch a kind of "Xingyun coin" as the trading medium. Customers can exchange their genetic information into "Xingyun coin", and they can also use "Xingyun coin" to pay for their own sequencing expenses. Pharmaceutical companies can purchase "Xingyun coin" with traditional currency to obtain the genetic information data of ordinary people. The whole trading process is completed through the blockchain platform, Encryption is transparent and secure
chech said that after integrating the cost of sequencing, genetic information protection, data management, genome big data processing and other factors, blockchain technology allows more people to truly "own" their own genetic information.
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