Private blockchain participating in authentication

1. Nodes are the places where the blocks are connected, and the blocks need to be chained to be useful
core analysis:
1. Transparency, 2. Openness, 3. Information can not be tampered with, 4. Decentralization,
5. Detailed analysis
blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. The so-called consensus mechanism is a mathematical algorithm to establish trust and obtain interests between different nodes in the blockchain system
1. In a narrow sense, blockchain is a kind of chained data structure composed of data blocks connected in sequence according to the time sequence, and it can not be tampered with and forged by cryptography
2. Broadly speaking, blockchain technology uses blockchain data structure to verify and store data, uses distributed node consensus algorithm to generate and update data, and uses cryptography to ensure the security of data transmission and access It is a new distributed infrastructure and computing method to program and operate data by using intelligent contract composed of automated script code.

2. The advantage of blockchain project authentication is that it can help consumers to mine, authenticate and apply the underlying blockchain technology; Help blockchain project investors correctly identify; Provide project guidance for blockchain projects.

3. Legally, China only has restrictions on the issuance and speculation of currency in the blockchain, because a large amount of black money in China, such as those of corrupt officials, will be illegally obtained overseas by means of digital currency. If the blockchain digital currency is opened up and traded casually, it is estimated that China can not control the outflow of black money. Now the law encourages blockchain. In addition to legal currency, China encourages and supports other blockchain technologies.

4. Basically, the principle is the same. Take baopin.com as an example, baopin.com's video blockchain authentication is actually DAPP. First, it takes a screenshot of the video's key frames per minute, then transcodes it into a string of unique numbers, and then uploads and records it into the Ethereum blockchain.

5. At the global financial Technology Innovation Summit hosted by people's daily digital communication, Li Junshan, President of the national blockchain Research Institute and director of the blockchain Certification Center, said that there are three elements to judge whether a blockchain project is worth investing

6. Private means that it belongs to an indivial. The write permission and the permission belong to an indivial. To be specific, you can go to lianpai community to have a look. This app is all about the knowledge and content of the blockchain. After you read it, you will understand it

7. Private blockchain: there is only a limited range of participating nodes, data access and use have strict permission management, write permission is only in the hands of participants, and read permission can be opened to the outside world
community blockchain; 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
Hello, the differences between the two are as above, for reference only, hope to adopt

8. bitcoin blockchain is a bitcoin blockchain--- Isn't it
that every node has all bitcoin's complete blockchain data--- yes