Pain points of decentralized search engine
Publish: 2021-04-17 15:56:19
1. On the Internet, the most typical example of centralization is the portal website. By collecting all the information on the Internet on its own platform, the portal website forms a central node, and then extends many branches from this node. Generally speaking, only one node is making decisions. According to the analysis of jinwowo network technology, the characteristics leading to centralization are as follows:
1. The central node grasps the information of distributed nodes
2. The sub nodes do not master the information of other nodes (centralization, non-public transactions)
moreover, the pain point of centralization is that the security of the system depends on the security of the central node, and the distributed node has no control over it.
1. The central node grasps the information of distributed nodes
2. The sub nodes do not master the information of other nodes (centralization, non-public transactions)
moreover, the pain point of centralization is that the security of the system depends on the security of the central node, and the distributed node has no control over it.
2. Block chain is not omnipotent, there is not much at present landing. You don't want to hook up with supermarkets. I can only think that Alipay and WeChat are now paying for them, and the only possible advantage of using block chain means is that there is no need for third party agencies to guarantee (Alibaba and Tencent) to save costs. And Alibaba and Tencent have the risk of running away (although it seems almost impossible at present), and they won't worry about program Defection with blockchain
3. At present, there are four main types of consensus mechanisms: pow, POS, dpos, pool
1. POW workload proof, which is familiar with mining, calculates a random number that meets the rules through and or operation, that is, obtains the bookkeeping right, sends out the data that needs to be recorded in this round, and stores it together with other nodes in the whole network after verification
advantages: complete decentralization, free access of nodes
disadvantages: bitcoin has attracted most of the computing power in the world, and other blockchain applications using POW consensus mechanism are difficult to obtain the same computing power to ensure their own security; Mining causes a lot of waste of resources; The period of reaching consensus is long, which is not suitable for commercial application.
2. Proof of rights and interests of POS, a mechanism of upgrading consensus of pow; According to the token proportion and time of each node; It can rece the difficulty of mining in equal proportion, so as to speed up the speed of finding random numbers< Advantages: to a certain extent, it shortens the time to reach a consensus
disadvantages: mining is still needed, which does not solve the pain point of commercial application in essence
3. Dpos share authorization certification mechanism is similar to the voting of the board of directors, in which the coin holders cast a certain number of nodes to verify and account on their behalf
advantages: greatly rece the number of participating verification and accounting nodes, which can achieve second level consensus verification
disadvantages: the whole consensus mechanism still depends on token, and many commercial applications do not need token to exist
4. Pool verification pool, which is based on traditional distributed consistency technology and data verification mechanism; It is a consensus mechanism widely used in the instry chain at present.
advantages: it can work without token, and realizes second level consensus verification on the basis of mature distributed consistency algorithms (pasox and raft)
disadvantages: the degree of decentralization is not as good as that of bictin; The multi center business model is more suitable for multi-party participation
it has great advantages in using consensus mechanism to ensure data consistency (the consensus mechanism is first proposed by ripple, and the network transaction synchronization mechanism with data correctness priority. In the consensus network, no matter how the software code changes, if you can't reach a consensus, you can't enter the network, let alone fork)
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PS: a little black, although the consensus mechanism can absolutely ensure that there will be no hard bifurcation at any time. However, the disadvantage of this mechanism is obvious, that is, it is much longer than the current bitcoin network to reach a consensus with other nodes. In extreme cases, the consequences of disconnection in ripple consensus mechanism network are also very terrible
it is possible that one day after the power failure in your home, the whole system will no longer be able to reach a consensus with other rippled nodes (in fact, the consensus mechanism requires more than 80% of the nodes to acknowledge your data before your submission will be accepted by other nodes, otherwise it will be rejected by exclusive nodes), Even you can only empty all your 500 GB data and resynchronize to connect to other ripple nodes
so at present, the existing rippled end is not suitable for civil use (if it is commercial, the impact is relatively small. For example, RL's own rippled node is hosted in Amazon cloud data center. If it has no response for a long time, it can make high claims, and there is almost no break in that place except for large disasters). This is one of the aspects RL has always wanted to improve.
1. POW workload proof, which is familiar with mining, calculates a random number that meets the rules through and or operation, that is, obtains the bookkeeping right, sends out the data that needs to be recorded in this round, and stores it together with other nodes in the whole network after verification
advantages: complete decentralization, free access of nodes
disadvantages: bitcoin has attracted most of the computing power in the world, and other blockchain applications using POW consensus mechanism are difficult to obtain the same computing power to ensure their own security; Mining causes a lot of waste of resources; The period of reaching consensus is long, which is not suitable for commercial application.
2. Proof of rights and interests of POS, a mechanism of upgrading consensus of pow; According to the token proportion and time of each node; It can rece the difficulty of mining in equal proportion, so as to speed up the speed of finding random numbers< Advantages: to a certain extent, it shortens the time to reach a consensus
disadvantages: mining is still needed, which does not solve the pain point of commercial application in essence
3. Dpos share authorization certification mechanism is similar to the voting of the board of directors, in which the coin holders cast a certain number of nodes to verify and account on their behalf
advantages: greatly rece the number of participating verification and accounting nodes, which can achieve second level consensus verification
disadvantages: the whole consensus mechanism still depends on token, and many commercial applications do not need token to exist
4. Pool verification pool, which is based on traditional distributed consistency technology and data verification mechanism; It is a consensus mechanism widely used in the instry chain at present.
advantages: it can work without token, and realizes second level consensus verification on the basis of mature distributed consistency algorithms (pasox and raft)
disadvantages: the degree of decentralization is not as good as that of bictin; The multi center business model is more suitable for multi-party participation
it has great advantages in using consensus mechanism to ensure data consistency (the consensus mechanism is first proposed by ripple, and the network transaction synchronization mechanism with data correctness priority. In the consensus network, no matter how the software code changes, if you can't reach a consensus, you can't enter the network, let alone fork)
- - - - - - - -
PS: a little black, although the consensus mechanism can absolutely ensure that there will be no hard bifurcation at any time. However, the disadvantage of this mechanism is obvious, that is, it is much longer than the current bitcoin network to reach a consensus with other nodes. In extreme cases, the consequences of disconnection in ripple consensus mechanism network are also very terrible
it is possible that one day after the power failure in your home, the whole system will no longer be able to reach a consensus with other rippled nodes (in fact, the consensus mechanism requires more than 80% of the nodes to acknowledge your data before your submission will be accepted by other nodes, otherwise it will be rejected by exclusive nodes), Even you can only empty all your 500 GB data and resynchronize to connect to other ripple nodes
so at present, the existing rippled end is not suitable for civil use (if it is commercial, the impact is relatively small. For example, RL's own rippled node is hosted in Amazon cloud data center. If it has no response for a long time, it can make high claims, and there is almost no break in that place except for large disasters). This is one of the aspects RL has always wanted to improve.
4.
At the bottom right of the front page of the post bar you want to apply for, there is a position of "information of this bar". There will be a text link of "apply for a small bar owner", as shown in the figure. Click:
this small bar owner's application requirements. Different post bar requirements are different, so it depends on what kind of post bar requirements you apply for
5. The combination of blockchain and shipping instry is mainly reflected in the accumulation of transaction and operation data of enterprises through shipping blockchain to form a large database, and then build a full process automatic blockchain system, thoroughly open up all links of the platform, and form an information sharing channel. It's said that chain Nova does this. I don't know if there is any cooperation.
6. It's all about blockchain technology, and there's nothing special about it. It's very easy to find websites with blockchain information types. You can go online to "blockchain network" and "blockchain XX network" and other information stations. There are at least thousands of them in China. No, let's go online.
7. In the past two years, blockchain has never been known to the public, and has gained more and more people's attention. It is even becoming a hot emerging field. In fact, it has profound internal logic. However, except for a few companies or research institutions that have invested in it, most people's understanding of blockchain is still in the conceptual stage. They may know some features or technical terms, but they don't really know what it is. As a general technology, blockchain technology can really play the driving force, value and influence of technological innovation only by accelerating its penetration into other fields and integrating with all walks of life. At the present stage, mining high-quality projects has become the only way out of the long night for the whole instry< At present, the digitization level of medical and health field is still in the middle and lower levels, the information circulation is difficult, and hospitals are isolated from each other, which directly affects the efficiency and accuracy of hospital (related service institutions) to query patient data (cases, etc.), and leads to frequent disputes between patients and service institutions. Therefore, digitalization of the whole instry is imperative. At the same time, in the digital part, data security and privacy has become a new problem
these existing pain points can be solved from the root through Mac
the generation mode of blocks and the storage mode of data determine that the data stored on the multi source chain has the characteristics of integrity, non tampering, traceability, privacy protection and time order. These characteristics make the multi source chain have natural advantages in the complex, huge and numerous medical fields
the application of blockchain in the field of healthcare
in the field of healthcare, there are many use cases of blockchain technology, but let's focus on the most promising use cases:
1 health data
as patients move in different medical fields and systems, creating usable and highly complete health records is a big challenge in the field of healthcare. Blockchain may help by creating a reliable data source to track changes between systems and solve many problems related to data integration between private systems. In other words, blockchain can be the glue to integrate highly dispersed medical records
however, this quickly raises the most important non-technical question of blockchain: if a distributed ledger is the source of authority, who "owns" the right to access the part of the blockchain that "you" own? For patients, blockchain makes sense. It will give them more control over their data, because they (theoretically) hold the key to their data
2 medical privacy
in fact, we have all met the problems of personal privacy and data leakage, for example, when we just went to the hospital last week, we would immediately receive a lot of telephone harassment, all kinds of registered, drug sellers and so on
medical data is directly related to our life, health and personal property, so its privacy, security and accuracy are particularly important. But at present, the whole medical system is facing the problem of data sharing across platforms. Blockchain technology can help us better protect, circulate and use these very important data. Duoyuan chain is an active practitioner, trying to boost the transformation and upgrading of traditional medical instry with the potential of technology
specifically, multi source chain uses the characteristics of blockchain technology, such as decentralization, smart contract, tamper proof and information transparency, and combines with n medical resource providers to realize the functions of medical traceability, real-time tracking of data on the chain, resource circulation, etc., which can effectively solve the current situation of medical instry pain points and patients' difficulty in seeing a doctor
3 revenue cycle, reconciliation and fraud
the biggest cost burden lurking in the U.S. healthcare system is continuous tracking services and capital flows: the huge complexity and the distributed nature of our health system mean that it costs billions of dollars a year to try to understand which patients receive which services and which providers provide them. Disputes inevitably arise, and both the insurance instry and health care providers spend a lot of extra time and money to resolve them
e to its independent architecture, blockchain may become the foundation of high integrity tracking function, which can be updated in a near instant manner. This means fewer mistakes (including financial and patient care) and a significant rection in fraud. Given the scale of the field, this may generate enough interest to attract investment to help address these complex technical challenges. To solve the problems of fake drugs, high drug prices, excessive medical treatment, excessive drug use and so on
Application of blockchain in the field of life sciences
the direction of pharmaceutical / Biotechnology R & D is cross organization cooperation, sharing resources among companies, government agencies and research institutions, which is the core of its development. But agencies are often reluctant to share data because they are worried about data theft. Blockchain provides a possibility to hard code trust into the process of collaborative R & D in a magical way. More trust means more cooperation, which in turn increases proctivity
by exploring the impact of blockchain on indivials, the rise of personal genomics means that patients with gene sequences can control their own genome authorization in a way that was previously impossible. Therapeutic research is increasingly focused on genomic information mining. As an important potential technology for obtaining permission to enter indivial anonymous gene sequences, blockchain can give patients more rights, and it may soon become the mainstream technology
in addition, the opportunities of supply chain technology in network security, supply chain management, Internet of things data management and precision medicine of hospitals and pharmaceutical companies are also showing signs of rising
the digitalized medical resources have become "biomedical digital assets", which have strong liquidity, transparency and visibility. Blockchain is not only the infrastructure of the future digital economic society, but also an important magic weapon for the digital transformation of various instries. Embracing blockchain means embracing the future. Speed is the future, and mat multi chain is always on the way.
these existing pain points can be solved from the root through Mac
the generation mode of blocks and the storage mode of data determine that the data stored on the multi source chain has the characteristics of integrity, non tampering, traceability, privacy protection and time order. These characteristics make the multi source chain have natural advantages in the complex, huge and numerous medical fields
the application of blockchain in the field of healthcare
in the field of healthcare, there are many use cases of blockchain technology, but let's focus on the most promising use cases:
1 health data
as patients move in different medical fields and systems, creating usable and highly complete health records is a big challenge in the field of healthcare. Blockchain may help by creating a reliable data source to track changes between systems and solve many problems related to data integration between private systems. In other words, blockchain can be the glue to integrate highly dispersed medical records
however, this quickly raises the most important non-technical question of blockchain: if a distributed ledger is the source of authority, who "owns" the right to access the part of the blockchain that "you" own? For patients, blockchain makes sense. It will give them more control over their data, because they (theoretically) hold the key to their data
2 medical privacy
in fact, we have all met the problems of personal privacy and data leakage, for example, when we just went to the hospital last week, we would immediately receive a lot of telephone harassment, all kinds of registered, drug sellers and so on
medical data is directly related to our life, health and personal property, so its privacy, security and accuracy are particularly important. But at present, the whole medical system is facing the problem of data sharing across platforms. Blockchain technology can help us better protect, circulate and use these very important data. Duoyuan chain is an active practitioner, trying to boost the transformation and upgrading of traditional medical instry with the potential of technology
specifically, multi source chain uses the characteristics of blockchain technology, such as decentralization, smart contract, tamper proof and information transparency, and combines with n medical resource providers to realize the functions of medical traceability, real-time tracking of data on the chain, resource circulation, etc., which can effectively solve the current situation of medical instry pain points and patients' difficulty in seeing a doctor
3 revenue cycle, reconciliation and fraud
the biggest cost burden lurking in the U.S. healthcare system is continuous tracking services and capital flows: the huge complexity and the distributed nature of our health system mean that it costs billions of dollars a year to try to understand which patients receive which services and which providers provide them. Disputes inevitably arise, and both the insurance instry and health care providers spend a lot of extra time and money to resolve them
e to its independent architecture, blockchain may become the foundation of high integrity tracking function, which can be updated in a near instant manner. This means fewer mistakes (including financial and patient care) and a significant rection in fraud. Given the scale of the field, this may generate enough interest to attract investment to help address these complex technical challenges. To solve the problems of fake drugs, high drug prices, excessive medical treatment, excessive drug use and so on
Application of blockchain in the field of life sciences
the direction of pharmaceutical / Biotechnology R & D is cross organization cooperation, sharing resources among companies, government agencies and research institutions, which is the core of its development. But agencies are often reluctant to share data because they are worried about data theft. Blockchain provides a possibility to hard code trust into the process of collaborative R & D in a magical way. More trust means more cooperation, which in turn increases proctivity
by exploring the impact of blockchain on indivials, the rise of personal genomics means that patients with gene sequences can control their own genome authorization in a way that was previously impossible. Therapeutic research is increasingly focused on genomic information mining. As an important potential technology for obtaining permission to enter indivial anonymous gene sequences, blockchain can give patients more rights, and it may soon become the mainstream technology
in addition, the opportunities of supply chain technology in network security, supply chain management, Internet of things data management and precision medicine of hospitals and pharmaceutical companies are also showing signs of rising
the digitalized medical resources have become "biomedical digital assets", which have strong liquidity, transparency and visibility. Blockchain is not only the infrastructure of the future digital economic society, but also an important magic weapon for the digital transformation of various instries. Embracing blockchain means embracing the future. Speed is the future, and mat multi chain is always on the way.
8. The bitcoin in the wallet can be recharged directly to the bonus.
9. Bitcoin is an investment and financial proct. You can't pay dividends when you buy bitcoin, you can only earn the difference. Of course, if you buy a bitcoin fund, there may be dividends.
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