What are the contents of blockchain creation zone

1. This is a comprehensive and in-depth book on blockchain technology, which focuses on the implementation principle, consensus mechanism, application scenarios and future development direction of blockchain. This book consists of five chapters. The main contents are as follows: introce the origin and successful application of blockchain from the development history and principle of bitcoin and blockchain; From the combination of blockchain and traditional instries, artificial intelligence, finance, big data and other aspects, this paper describes the great technological changes that blockchain can bring to people; This paper introces the main application scenarios and corresponding cases of blockchain technology, including proof of existence, smart contract, supply chain, identity verification, asset transaction, forecast market, e-commerce, logistics, file storage, medical treatment, etc; This paper introces the current successful blockchain technology practice projects from the aspects of principle, technology innovation and development, including Ethereum, notarization, bitstock, Ruibo and super ledger; This paper describes the future blueprint of blockchain technology from the aspects of the evolution of blockchain network itself, the Internet of things and the Internet, which is to build the next generation Internet based on credit
in the bitcoin system, the number of bitcoins issued by each block decreases with time. Each block from Genesis block will issue 50 bitcoins to the bookkeeper of the block, and then the number of bitcoins issued by each block will be reced by half every four years (210000 blocks), and so on, until the number of bitcoins is stable at the upper limit of 21 million [19]. There will be a service charge in the process of bitcoin transaction. At present, the default service charge is one in ten thousand bitcoins, which will also be recorded in the block and rewarded to bookkeepers
with the soaring price of bitcoin, more and more people join the bitcoin mining instry. How long does it take to dig a bitcoin? How amazing is the power consumption of bitcoin mining machine? First of all, let's take a look at the "blockchain". The core principle of bitcoin is "blockchain". Each block corresponds to a bill. Linking all blocks is a blockchain. Any transaction information and transfer records are recorded in the blockchain. It should be noted that the blockchain exists in the whole Internet, so no bitcoin holder is worried about the loss of bitcoin
blockchain is probably such a structure. Let's explain it briefly. Taking the bitcoin blockchain as an example, the blockchain is not only bitcoin blockchain. As early as 2009, there was only one blockchain, bitcoin blockchain. In recent years, there have been other blockchains. In a moment, I will also introce the blockchain of Ethereum, or bitstock, as well as various blockchains. After the development of blockchain, Now it has entered the public chain and private chain. Just like bitcoin, the public chain is an account in the world. Bitcoin has only one blockchain in the world, which is owned in the world. Later, it developed to some financial institutions, which want to use blockchain to do things. It can't do things on a blockchain without national boundaries. Bitcoin blockchain is global, There is no sovereignty to manage it, no central organization to manage it, and almost no one can harm it. Not only hackers can't harm bitcoin blockchain, but also the government can't harm bitcoin blockchain.

2.

1、 Blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies

blockchain is an important concept of bitcoin. It is essentially a disintermediated database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains the information of a bitcoin network transaction, Used to verify the validity of its information (anti-counterfeiting) and generate the next block

2. Application

1. Art instry

ascribe enables artists to declare ownership by using blockchain technology, issue numbered and limited edition works, and target at any type of digital form of art. It even includes a trading market where artists can buy and sell through their websites without any intermediary services

In recent years, bitproof is the most advanced application in many document time stamp applications, which will make the traditional notarization method become the past. Bitproof offers more services than free versions including blocksgin and originstaemp, including one for intellectual property. Interestingly, bitproof recently cooperated with an it school in San Francisco to put their students' academic certificates on the blockchain, completely redefining how to handle and use diplomas and student certificates

Development instry colu is the first enterprise to allow other enterprises to issue digital assets. They can "token" all kinds of assets to impress many people. Although the free bitcoin wallet couperparty also allows simple tokens to be issued and traded among other wallet holders, the tokens of colu can be set with various states and types, can be detached from or returned to the system, and can be stored on BitTorrent's network when the data stored on the blockchain is too large

4. Real estate instry

they plan to make the whole instry chain process more modern and solve various problems faced by everyone when participating in real estate, including naming process, land registration, agency, etc

5, Internet of things

a possible application scenario is: generate corresponding behavior through transaction, assign address to each device, inject a certain fee into the address, and perform relevant actions, so as to achieve the application of Internet of things. Similar to: PM2.5 monitoring point data acquisition, server leasing, webcam data call, DNS server, etc

6. Insurance instry in the past two years, the hottest topic in the field of science and technology can not be separated from blockchain technology. This underlying technology, born out of bitcoin, has proved its highly secure and reliable architecture and algorithm design with more than seven years of stable operation. At the same time, with innovative technologies such as distributed ledger and smart contract, it has opened up a huge imagination space for instrial upgrading of many instries. Some instry experts even predict that blockchain technology will set off the second Internet revolution

extended materials:

in 2008, Nakamoto proposed the concept of "blockchain" in the white paper on bitcoin, and established bitcoin network in 2009, developing the first block, namely "Genesis block"

the shared value system of blockchain was first imitated by many cryptocurrencies, and improved in workload proof and algorithm, such as equity proof and scrypt algorithm. Subsequently, the blockchain ecosystem has been evolving all over the world, with the emergence of ICO for the first token sale, Ethereum for smart contract blockchain, "asset token sharing economy with light ownership and heavy right to use" and blockchain countries

at present, people are using this shared value system to develop decentralized applications (DAPP) in all walks of life, and build decentralized autonomous organizations and decentralized autonomous communities (DAS) around the world

3. The hierarchical structure of blockchain
1, data layer / data layer
the data layer mainly describes the physical form of blockchain, which is a chain structure starting from Genesis block on blockchain, including block data, chain structure, random number, time stamp, public and private key data on blockchain, and is the lowest level data structure in the whole blockchain technology
2. Network layer / network layer
the network layer mainly realizes the mechanism of distributed network through P2P technology, and the network layer includes P2P networking mechanism, data dissemination mechanism and data verification mechanism. Therefore, blockchain is essentially a P2P network with automatic networking mechanism, and the communication between nodes is maintained by maintaining a common blockchain structure
3. Consensus layer / consensus layer
consensus layer mainly includes consensus algorithm and consensus mechanism, which enables highly dispersed nodes to reach consensus on the effectiveness of block data efficiently in the decentralized blockchain network. It is one of the core technologies of blockchain and also the governance mechanism of blockchain community. At present, there are at least dozens of consensus mechanism algorithms, including workload proof, rights and interests proof, rights and interests authorization proof, burning proof, importance proof and so on
data layer, network layer and consensus layer are the necessary elements of building blockchain technology. Without any layer, it can not be called a real blockchain technology
4. Incentive layer / activator layer
the incentive layer mainly includes the issuing system and distribution system of economic incentive. Its function is to provide certain incentive measures, encourage nodes to participate in the security verification work in the blockchain, incorporate economic factors into the blockchain technology system, encourage nodes that comply with rules to participate in bookkeeping, and punish nodes that do not comply with rules
5. Contract layer / contract layer
the contract layer mainly includes various scripts, codes, algorithm mechanisms and smart contracts, which is the basis of block chain programming. Embedding the code into the blockchain or token, realizing the smart contract that can be customized, and automatically executing without a third party when certain constraints are met, is the foundation of the blockchain's distrust
6. Application layer / application layer
the application layer of blockchain encapsulates various application scenarios and cases, which are similar to applications on computer operating system, portals on Internet browsers, search engines, e-malls or apps on mobile phones. The blockchain technology applications are deployed on Ethereum, EOS and qtum, and are implemented in real life scenarios. The future programmable finance and programmable society will also be built on the application layer
incentive layer, contract layer and application layer are not necessary factors for each blockchain application, and some blockchain applications do not completely include the three-tier structure.

4. When someone does something wrong, people's first reaction is to stop him. However, e to the factors of status and timing, sometimes direct check will have the opposite effect
I think the first step is to make sure that your parents are not deceived, because parents may be better at communicating. Then work with your parents to stop your uncle
I think you can find one or two professionals to teach your uncle, such as your teacher, and you can also find the content of online rumor refutation.

5. 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.

6.

Beijing Chuangshi node blockchain Technology Co., Ltd. is a limited liability company (invested or controlled by a natural person) registered in Miyun District of Beijing on August 1, 2018, with its registered address at 01-527, floor 5, Lanhua, No. 69, Xinnan Road, Miyun District, Beijing

the unified social credit code / registration number of Beijing Chuangshi node blockchain Technology Co., Ltd. is 91110228ma01dtdp5j, and the enterprise legal person is Yang Baoqi

the business scope of Beijing Chuangshi node blockchain Technology Co., Ltd. is: technology development, technology transfer and technology service; Data processing (except for bank card center and cloud computing data center with pue value above 1.5); Software development; Design, proce, act as an agent and publish advertisements; Economic and trade consultation; Sales of electronic procts, daily necessities, clothing, handicrafts; To undertake exhibition activities; Enterprise planning Enterprises independently choose business projects and carry out business activities according to law; For projects that need to be approved according to law, business activities shall be carried out according to the approved contents after being approved by relevant departments; It is not allowed to engage in business activities of projects prohibited or restricted by the instrial policies of this Municipality

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