Shulou(Shulou.com)06/02 Report--

This article mainly shows you "what the blockchain refers to". The content is simple and clear. I hope it can help you solve your doubts. Let the editor lead you to study and learn the article "what blockchain refers to".

Blockchain is an interlinked distributed computing system; from an application perspective, blockchain is a distributed shared ledger and database, which has the characteristics of decentralization, untamperability, leaving traces throughout the process, traceability, collective maintenance, transparency and so on.

This article operating environment: windows7 system, Dell G3 computer.

What kind of computing system is blockchain interlinked?

Blockchain is a distributed computing system that is interlinked.

What is a blockchain?

From the scientific and technological point of view, blockchain involves many scientific and technological problems, such as mathematics, cryptography, Internet and computer programming. From the perspective of application, to put it simply, blockchain is a distributed shared ledger and database, with the characteristics of decentralization, untamperability, leaving traces throughout the process, traceability, collective maintenance, transparency and so on. These characteristics ensure the "honesty" and "transparency" of the blockchain, and lay the foundation for creating trust in the blockchain. On the other hand, the rich application scenarios of blockchain are basically based on that blockchain can solve the problem of information asymmetry and realize the cooperation, trust and concerted action among multiple agents.

Blockchain is a new application mode of computer technology, such as distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and so on. Blockchain, an important concept of Bitcoin, is essentially a decentralized database and, as the underlying technology of Bitcoin, a string of data blocks associated with cryptography. Each data block contains a batch of information about sub-Bitcoin network transactions, which is used to verify the validity of its information (anti-counterfeiting) and generate the next block.

The original English version of the Bitcoin white paper does not actually appear the word blockchain, but uses the word chain of blocks. The earliest Chinese translation of Bitcoin White Paper [9] translated chain of blocks into a blockchain. This is the earliest appearance of the Chinese word "blockchain".

The State Internet Information Office issued the regulations on the Management of Block chain Information Services on January 10, 2019, which will enter into force on February 15, 2019.

As an important breakthrough of independent innovation of core technology, the security risk of blockchain is regarded as a major deficiency restricting the healthy development of the industry, and frequent security incidents sound the alarm for the industry. In order to embrace the blockchain, it is necessary to speed up the exploration and establishment of a security system adapted to the technical mechanism of the blockchain.

Types

Public block chain

Public blockchain (Public Block Chains) means that any individual or group in the world can send a transaction, and the transaction can be effectively confirmed by the blockchain, and anyone can participate in the consensus process. Public block chain is not only the earliest block chain, but also the most widely used block chain. The virtual digital currencies of each major bitcoins series are based on public block chain, and there is only one corresponding block chain in the world.

Joint (industry) block chain

Industry blockchain (Consortium Block Chains): multiple pre-selected nodes are designated as bookkeepers within a group, and the generation of each block is determined by all pre-selected nodes (pre-selected nodes participate in the consensus process). Other access nodes can participate in the transaction, but do not care about the accounting process (essentially managed accounting, just distributed accounting, how many pre-selected nodes). How to determine that the bookkeeper of each block becomes the main risk point of the block chain), anyone else can make a qualified query through the open API of the block chain.

Private block chain

Private blockchain (Private Block Chains): only use the general ledger technology of the blockchain for accounting, which can be a company or an individual, and enjoy the write permission of the blockchain exclusively. This chain is not much different from other distributed storage solutions. Traditional finance wants to experiment with private blockchain, while the application of public chain, such as bitcoin, has been industrialized, and the application products of private chain are still being explored.

Features

Decentralization. Blockchain technology does not rely on additional third-party management agencies or hardware facilities, there is no central control, in addition to the self-integrated blockchain itself, through distributed accounting and storage, each node realizes information self-verification, transmission and management. Decentralization is the most prominent and essential feature of block chain.

Openness. The technical foundation of blockchain is open source. In addition to the private information of all parties involved in the transaction, the data of blockchain is open to everyone, and anyone can query blockchain data and develop related applications through open interfaces. Therefore, the information of the whole system is highly transparent.

Independence. Based on consensus specifications and protocols (similar to various mathematical algorithms such as the hash algorithm used by Bitcoin), the whole blockchain system does not rely on other third parties, and all nodes can automatically and safely verify and exchange data in the system without any human intervention.

Security. As long as you cannot control 51% of all data nodes, you cannot arbitrarily manipulate and modify network data, which makes the blockchain itself relatively safe and avoids subjective and artificial data changes.

Anonymity. Unless there are legal requirements, technically speaking, the identity information of each block node does not need to be disclosed or verified, and the information transmission can be carried out anonymously.

The above is all the content of this article "what does blockchain refer to". Thank you for your reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.