Blockchain technology classification

1. According to the classification of known blockchain technology applications, jinwowo group can be roughly divided into three categories:
1 - public blockchain; It means that anyone can read and send transactions for validity confirmation, and anyone can participate in the consensus process of the blockchain to jointly maintain the security, transparency and non tampering of the public blockchain data. For example,
2-community blockchain represented by bitcoin; It is also called alliance chain, which means that the nodes participating in the blockchain are selected in advance, and there are usually good network connections and other cooperative relationships between the nodes; Community blockchain is a practical application scenario of the combination of blockchain and physical goods, such as Domenech jewelry's Maobei mode
3-private blockchain: the participating nodes only have a limited range, the data access and use have strict permission management, the write permission is only in the hands of the participants, and the read permission can be opened to the outside world.

2. The era of blockchain 1.0 is the era of digital currency, and the technical basis is:
1. Lianzhuang data block structure based on blocks
2. Network wide shared ledger
3. Asymmetric encryption
4. Source code open source
blockchain 2.0 era technical basis:
1. Smart contract; It is an application in the blockchain system. It is a business logic that can run automatically by coding. It usually has its own token and special development language
2. DAPP: it includes the user's applications, including but not limited to various cryptocurrencies, such as Ethereum wallet
3. Virtual machine: used to execute the compiled code of smart contract. Virtual machine is Turing complete
with the application and deepening of blockchain technology, the era of blockchain 3.0 has come. The mode of blockchain cooperation can be seen from behind the operation of all walks of life. Therefore, blockchain will change the way of human life widely and profoundly, so the whole life service will enter the era of blockchain. In the process of Internet development, blockchain + physical instry, blockchain e-commerce and blockchain community operation can be applied to blockchain technology
of course, 3.0 came into being with the development of modern cryptography. Today's applied cryptography is the result of cryptography 20 years ago. Therefore, in order to apply blockchain technology to more participation scenarios, especially in Internet economy and other aspects, more verification is needed to verify whether the existing encryption technology can meet the demand, and more in-depth integration of cryptographic frontier technology and continuous innovation are needed.

3. 1. Public chain, no official organization and management organization, no central server, participating nodes freely access to the network according to the system rules, not controlled, and work based on consensus mechanism among nodes Subversive: absolutely credible and open) < br > typical case: digital currency represents bitcoin < br > 2. The private chain is built within a group. The operation rules of the system are set according to the requirements of the group, and the modification or read permissions are limited to some extent, while maintaining the authenticity and partial decentralization of the blockchain Typical case: R3 < br > 3. Alliance chain, jointly initiated by several institutions, is between the public chain and the private chain, and has the characteristics of partial decentralization. The read permission on the fast chain in this area may be public or partially public, that is to say, multiple pre selected nodes are designated as bookkeepers internally, and the pre selected nodes compete for bookkeeping permission, Other access nodes can participate in the transaction, but not the accounting process The abilities of the candidates should not be uneven< Br > (relatively credible and open) < br > existing cases: Super ledger < br > example:? In the case of loan diversion, when the user jumps to the other party's website for registration through our link, the docking party can choose to cheat and say that it has not received the user's registration request. However, if we put the user registration behavior into the block, if the docking party wants to receive the user registration behavior, it must pay us at the same time.

4. The classification of Chongqing jinwowo analysis blockchain technology is as follows: according to the participation access mechanism of blockchain, that is, the blockchain account book is not public, we can divide the blockchain into three categories: public chain, private chain and alliance chain.

5. What are the characteristics of public chain, private chain and alliance chain
according to the access mechanism, blockchain can be divided into three categories: public chain, private chain and alliance chain. Other types of blockchains may be born in the future
the public chain is open and transparent. Any indivial or group in the world can send transactions on the public chain, and the transactions can be effectively confirmed by the blockchain. Everyone can compete for bookkeeping rights. Bitcoin blockchain is a typical representative of public chain
the alliance chain is semi open. It is a blockchain used within a group or organization. Several nodes need to be designated as bookkeepers in advance. The generation of each block is decided by all preselected bookkeepers. Other nodes can trade, but they have no bookkeeping rights
the private chain is completely closed. Only the blockchain technology is used for bookkeeping, and the bookkeeping right is not open, and only internal transactions are recorded, which are exclusively enjoyed by companies or indivials.

6. The general classification of Chongqing jinwowo analysis blockchain technology is as follows:
1 - Open blockchain
2 - Collaborative blockchain
3 - private blockchain.

7. A new resolution initiated by representative Adam kinzinger, a Republican from Indiana, has been submitted to the US House of Representatives, calling on the government to formulate national policies on emerging technologies, including digital currency and blockchain technology
the resolution calls on the idea of bitcoin, but does not directly mention its name. Instead, it calls it "alternative illegal currency". Blockchain technology is the key point, which points out that this technology has the potential to "fundamentally change" the way trust and security are built on online transactions
but in fact, the United States has not taken action to formulate this rule. However, there is a global blockchain alliance R3 in the process of formulating the standard for the use of blockchain. Of course, blockchain is just a technology that can be used by any enterprise. In China, there is a project called decent, which is more avant-garde. It uses blockchain technology to build a decentralized content publishing platform, but it may encounter some problems in China.

8. The development of blockchain technology is becoming more and more popular with the continuous expansion of applications. This powerful development power from the needs of various instries makes the blockchain technology change with each passing day, which makes the achievements of various instries more and more attention. From professional technology to resources, blockchain technology is constantly concentrated in this instry, So that the development of blockchain technology has entered a new stage, and the impact of the development of blockchain technology has attracted much attention

when it comes to blockchain technology, we have to mention bitcoin. Many people know that electronic currency bitcoin is not issued by a specific monetary institution, but generated by a large number of calculations of a specific algorithm. In fact, the core of real support for bitcoin is blockchain technology

How can invisible and intangible bitcoin operate through blockchain technology? The popular interpretation in the instry is that blockchain can be seen as a technical solution to collectively maintain reliable databases through "decentralization" and "distrust". Generally speaking, this technology can be understood as the technology of all participants in bookkeeping. In the past, people used a centralized server for bookkeeping. In the blockchain technology system, everyone can participate in bookkeeping and jointly identify the authenticity of records

"through this technology, even if there is no neutral third-party organization, the two sides who do not trust each other can cooperate. In short, blockchain is like a "trust creating machine." Bubi company is a leading blockchain service provider in China. It has made many breakthroughs in blockchain technology platform, can meet the scenario of tens of millions of users, and has the ability to quickly build upper application business

the blockchain technology in which all parties participate in recording and storing information adopts a decentralized distributed structure, which saves a lot of intermediary costs and ensures data security better; At the same time, it has tamperable time stamp, which can effectively solve the problems of data tracking and information anti-counterfeiting

will it become the next outlet of Internet Finance

although blockchain is accompanied by bitcoin, the derivative value of the technology has surpassed digital currency. Bubi blockchain focuses on the innovation of blockchain technology and procts, has a number of core technologies, and has developed its own blockchain service platform. With decentralized trust as the core, we are committed to building an open value circulation network to let digital assets flow freely. What Bubi wants to do is a new technology and proct to realize the real value circulation and make the Internet reach a new height. With the application of this technology, when transferring assets, there will be no central organization, which can realize the direct transfer of assets between us

in the current international financial market, the US central bank, the Swiss bank, and some insurance and futures companies are competing to develop blockchain technology. Fang Liang introced that in the Internet finance instry, blockchain technology will first affect financial infrastructure such as payment system, securities settlement system and transaction database; Later, the technology will also be extended to general financial services, such as credit system, "anti money laundering" and so on

"the payment and clearing system in the financial field will evolve towards decentralization. The electronic ledger supported by blockchain technology is an error free, tamper proof and reliable system, which has a profound impact on payment, clearing, transaction and right confirmation." Li Yan said

therefore, people in the instry believe that blockchain technology may be the next wind in the Internet finance instry. With the deepening of the interconnection of all things, Yang Tao, assistant director of the Institute of finance of the Chinese Academy of Social Sciences, also said that the blockchain will make all indivials possible to become important nodes in the allocation of financial resources, promote the improvement of the existing financial system rules, and build a shared and win-win financial development ecosystem

blockchain technology will affect many instries

"blockchain technology has a wide range of applications in the era of big data." Li Yan said frankly that at present, in addition to Internet finance, blockchain technology has been applied in many fields and has shown great prospects

for example, the healthcare instry has benefited a lot from blockchain technology. In reality, the leakage of patients' private information occurs from time to time, and the centralized database or file cabinet management of medical department is no longer the best choice. Medical institutions are using blockchain technology to realize the confidentiality of patients' privacy information

in addition, blockchain technology is also of great significance in law. In some civil areas, it is often difficult to determine the burden of proof, and the blockchain technology can record every step to help the judicial authorities identify the specific person responsible

"especially in the field of assets, whether it is physical assets such as real estate and automobile, or intangible assets such as health and reputation, we can use this technology to complete registration, transaction and tracking. It can be said that blockchain technology will be useful in any field of proction and life that lacks trust. "

the development of blockchain technology has also brought about changes in the operation concepts of various instries. New technologies and new concepts have promoted the new development of various instries. This driving force has a huge impact on society and economic activities. Many new instrial phenomena will occur one after another, and the public will wait and see. They expect this new technology to be used by various instries, Better benefit all instries.

9. According to the classification of known blockchain technology applications, jinwowo group can be roughly divided into three categories:
1 - public blockchain
2 - community blockchain
3 - private blockchain.