Popular blockchain databases in 2020

1. blockchain is a term in the field of information technology. In essence, it is a shared database. The data or information stored in it is characterized by "unforgeability", "trace in the whole process", "traceability", "openness and transparency" and "collective maintenance". Based on these characteristics, blockchain technology has laid a solid "trust" foundation, created a reliable "cooperation" mechanism, and has broad application prospects

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2. Blockchain is the biggest trend in the next decade
if you look at the problem with the thinking of 30 years ago, you will think that others are crazy, but in fact you are out of date
the concept of blockchain can be traced back to the end of 2008. In the forum, a mysterious personage named "Nakamoto Tsung" published a paper "bitcoin: a peer-to-peer e-cash system" and proposed the concept of blockchain for the first time
on January 3, 2009, the first block of the blockchain was born, which is called the "Founding block"
almost with the birth of blockchain technology, bitcoin became the first thing to play its role. In the following years, bitcoin graally swept the world. In 2017, its crazy market made blockchain technology known to all
the idea of blockchain first appeared in the famous bitcoin open source project. In the process of its birth and development, bitcoin project draws on the technical achievements from digital currency, cryptography, game theory, distributed system, cybernetics and other fields. It can be said that bitcoin project is good at all. As its core supporting structure, blockchain technology is a remarkable innovation achievement
blockchain is a distributed database system with different nodes, which is an open ledger system<
three characteristics of blockchain
compared with the traditional centralized scheme, blockchain technology mainly has the following three characteristics:
the core idea of blockchain is decentralization
in the blockchain system, the rights and obligations between any node are equal, and all nodes have the ability to vote with computing power, Thus, the result recognized by more than half of the nodes is guaranteed. Even under serious hacker attacks, as long as the number of nodes controlled by hackers does not exceed half of the total number of nodes in the world, the system can still operate normally and the data will not be tampered with
block chain's biggest subversive is the establishment of credit
the collective maintenance of blockchain can rece the cost
in the centralized network system, the maintenance and operation of the system depend on the operation and operation of platforms such as data center, and the cost cannot be omitted. Anyone can participate in the nodes of the blockchain. Each node can verify the correctness of the results of other nodes' records while participating in the records, which improves the maintenance efficiency and reces the cost
in a word, blockchain touches money, trust and power, which are the fundamental basis for human survival< Its development has gone through three stages
1. Brewing period: from 2009 to 2012, bitcoin and its instrial ecology are the main economic forms
2. Embryonic period: from 2012 to 2015, with bitcoin entering the public view, new wallet payment and remittance companies appeared, and blockchain economy spread to the financial field. The underlying technology of blockchain is constantly innovated. Blockchain technology is separated from bitcoin system
3. Development period: in 2016, we began to explore instry applications, and a large number of blockchain start-ups appeared. The popularity of ICO in 2017 has given blockchain unprecedented attention
"blockchain 2.0 era" is coming
the application service layer is the driving force for the sustainable development of blockchain, which is divided into three stages of application: 1.0, 2.0 and 3.0
programmable currency: blockchain 1.0 application
programmable currency is the digital currency represented by bitcoin, but it is not the legal tender of any country or region, and there is no government authority to provide guarantee for it
programmable Finance: blockchain 2.0 application& quot; Smart contract& quot; Using program algorithm to replace the concept of contract execution. This enables blockchain to expand from the original monetary system to the registration and transfer of equity, creditor's rights and property rights, the transaction and execution of securities and financial contracts, and even the financial fields of gambling and anti-counterfeiting
programmable Society: blockchain 3.0 application
blockchain is the core of value Internet, which can confirm, measure and store the property rights of information and bytes representing value in each Internet. It can not only record the transactions of the financial instry, but also record almost anything valuable that can be expressed in the form of code. Its application can be extended to any field with demand, and then to the whole society
at present, the application of blockchain has begun to surpass bitcoin (blockchain 1.0), enter the era of blockchain 1.5, and transition to the financial field (blockchain 2.0)
in the next 3-5 years, blockchain may go beyond the financial field and enter the field of social notarization and intelligence (blockchain 3.0), including identity authentication, notarization, arbitration, audit, domain name, logistics, medical care, mail, visa, voting and other fields. Its application scope will be expanded to the whole society, and blockchain technology is likely to become a new technology& quot; All things are connected& quot; It's the lowest level protocol
at present, blockchain technology has been recognized by the world, and its development has become an inevitable trend. Accompanied by more people's attention, "in the next 30 years, new technologies will be integrated into all aspects of traditional instries, and human society will turn upside down. No matter who you are, no matter where you are, all of us will be a part of this great change."
this is the current situation. Blockchain has given the post-90s an opportunity. However, if you want to control blockchain technology without being affected by negative factors, the most important thing is to have a clear understanding of it, whether it is regulators, researchers, speculators or bystanders
it's time to devote more energy to blockchain technology
in China, the average annual salary of blockchain positions has reached more than 300000, and that of some enterprises has reached more than 1 million. The monthly salary of blockchain instry graates in Beijing, Shanghai and other places has exceeded 20K! If the post-90s seize the bonus of the times, they may become the next Alibaba in the future! If you miss it, you may regret it for ten years.

3.

Because the blockchain technology is not mature at this stage, and the infrastructure is not perfect, many applications are limited, and the overall application is still in a very early stage

First of all, the main function of blockchain is to store information. Any information that needs to be saved can be written to or read from the blockchain, so it is a database. Secondly, anyone can set up a server and join the blockchain network to become a node. In the world of blockchain, there is no central node (decentralization). Every node is equal and keeps the whole database. You can write / read data to any node, because all nodes will be synchronized in the end to ensure the consistency of the blockchain

4. Chongqing jinwowo: as for how to build a rigorous database, the method of blockchain is to innovate the structure of the database, divide the data into different blocks, link each block to the back of the previous block through specific information, and present a complete set of data in sequence, which is also the source of the three words "blockchain".

5. We should adhere to the principles of combination of dredging and blocking, classified teaching, multi-party participation and comprehensive policy implementation, take modern culture as the guide, take the governance of "three non" as the main content, and take the elimination of religious extreme thoughts such as "jihadi martyrdom into heaven" as the main goal. We should adhere to the principle of hard attack and hard ecation and guidance; We should make good use of the "five keys", push forward the "de radicalization" work from the perspective of governance of religious extremism. Under the strong leadership of prefectures and cities, we have achieved remarkable results through efforts at all levels.

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8. Looking forward to 2021, the top-level design of China's blockchain will be further improved, the application standards of various instries will be graally established, and the development direction will be from technology leading to market penetration; The application of blockchain convergence in finance, supply chain, government affairs and other fields begins to land, and the instrial scale will show rapid growth. However, many problems in the development of China's blockchain still need to be focused and solved or alleviated in 2021. For example, the independent innovation ability of core technology still needs to be further strengthened, the security problem and talent gap need to be improved, and the integration application scenarios still need to be further explored. Therefore, CCID Research Institute proposes to accelerate the construction of the blockchain ecosystem, improve the standards and regulations, improve the regulatory system, strengthen the independent innovation ability of core technology, promote the coordinated development of blockchain and other new technologies, and vigorously cultivate professional talents, so as to realize the healthy development of the blockchain instry
since 2014, easy security has been committed to independent innovation in the research and development and application of blockchain. It is a mature blockchain electronic data storage and preservation institution that uses blockchain technology to solidify electronic data and is recognized by the judicial authorities. By creating the mode of "blockchain + justice + application", taking blockchain technology as the underlying technology and electronic data preservation as the basis, three application layer brands of intellectual property protection (micro right), electronic contract signing (Junzi sign) and Internet notarization system (zhongzhengbao) were launched
the joint Notary Office of easy preservation, Arbitration Commission, right protection center and Ca organization jointly launched the "preservation chain" open platform. At the same time, Guangzhou Internet court and more than 30 courts led by the supreme law participated in the judicial chain. By constantly improving the "blockchain + justice" ecosystem, easy preservation can provide different groups with one-stop blockchain preservation services such as evidence collection, certificate storage and certificate issuance
at present, it has obtained 15 independent invention patents, 27 rights, ISO 27001 Information security system certification, three-level certification of Ministry of public security, national double high enterprises, instrial Internet pilot demonstration project of Ministry of instry and information technology of the people's Republic of China in 2018 (the only selected project of blockchain), and national & 12153in 2019; Information Office; Batch of domestic blockchain information service record enterprises.