1. blockchain includes public blockchain, joint (instry) blockchain and private blockchain. Public chain point-to-point e-cash system: bitcoin, smart contract and decentralized application platform: Ethereum
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. In essence, it is a decentralized 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 a batch of bitcoin network transaction information, Used to verify the validity of its information (anti-counterfeiting) and generate the next block
extended data
according to the different degree of blockchain network centralization, three kinds of blockchains under different application scenarios are differentiated:
1. The blockchain with the whole network open and without user authorization mechanism is called public chain
2. The authorized nodes are allowed to join the network, and the information can be viewed according to the authority. It is often used in the inter agency blockchain, which is called alliance chain or instry chain
3. All the nodes in the network are in the hands of one organization, which is called private chain
alliance chain and private chain are also called licensing chain, and public chain is called non licensing chain
blockchain features
1, decentralization. Blockchain technology does not rely on additional third-party management institutions or hardware facilities, and there is no central control. In addition to the self-contained blockchain itself, each node realizes information self verification, transmission and management through distributed accounting and storage. Decentralization is the most prominent and essential feature of blockchain
2. Openness. Blockchain technology is based on open source. In addition to the private information of all parties involved in the transaction is encrypted, the data of blockchain is open to everyone. Anyone can query blockchain data and develop related applications through the open interface, so the information of the whole system is highly transparent
3. Independence. Based on consensus specifications and Protocols (similar to various mathematical algorithms such as 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
4. Safety. As long as 51% of all data nodes cannot be controlled, the network data cannot be arbitrarily manipulated and modified, which makes the blockchain itself relatively safe and avoids subjective and artificial data changes
5. 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 can be transferred anonymously
2. Blockchain platform, do you want to see blockchain information? Here is Amway password finance, general chain circle, coin circle, DAPP and other information.
3. There are few real baas that have been approved by the state. At present, the mainstream platforms are Tencent's tbaas, Jingdong Zhizhen chain jdchain, ant blockchain baas, Rongze's rbaas, network's Intelligent Cloud and Huawei's cloud BCS. Among them, the top four baas platforms are teams that have been researching and developing blockchain technology for several years, R & D capabilities are very strong.
4. At present, the mature application of blockchain technology is more concentrated in some public chain projects, because many application projects need to be developed based on this, so I think public chain projects are one of the major landing directions in the world. It's still too early to talk about maturity. After all, bitcoin and Ethereum are still blocked, and many old problems have not been solved, There will be many new problems. The well-known ones are Biyuan chain, ulord (the project is abroad, but the technical party provides it in the domestic company, Hunan Tianhe Guoyun Co., Ltd.), quantum chain, Xiaoyi Neo, gongxinbao, etc.
5. I'm very responsible to tell you that blockchain is definitely not a scam. First of all, the most talked about blockchain is
digital currency. Here I want to state that there is no digital currency out at present. As you know, bitcoin, Ethereum, reborn, etc. are all digital encryption codes, and they don't have full purchasing power. At present, they are only in the stage of speculation. Blockchain is widely used in the future It will certainly overturn the existing economic model and affect the way of human life. Compared with the Internet, it will have a qualitative leap. Loser poor want to become a billionaire. This is the best shortcut. If you want to know more, you can continue to ask questions
6. Talking about the biggest difference between blockchain and traditional Internet, I think the Internet is a network with countless intermediary nodes and central controllers. From the professional point of view, it is communication technology, it is a seven layer communication network, from the public point of view, it can be divided into Internet hardware layer, Internet application layer. The hardware layer of Internet has been mature for 20 years. Application layer also has a large number of intermediary nodes, such as Alipay, when we pay is based on Ali Alipay database, Tencent QQ currency is based on Tencent's intermediary data storage to ensure that it runs correctly. The blockchain is a new model, which is a peer-to-peer network. No one controls the data in the network. The data is scattered on each node in the network. Some mathematical algorithms are used to ensure the consistency of the data. This design is brand new for communication science.
7. This "digital asset service platform" is one of the key blockchain projects released by Hunan Province in 2020. Souyun technology is a blockchain company focusing on providing overall solutions and operation support for the instry. It is the president unit of Changsha blockchain Technology Application Instry Association, and has instry application scenario solutions. Now, Hunan souyun Technology China Securities Digital Network Technology Co., Ltd. and several major stock exchanges have launched a public registration service center for movie and drama blockchain, which is the integration of blockchain technology and film and television projects. Mature blockchain technology is used to provide right protection, trading, digital circulation and other needs.
