Communication protocol in blockchain

1. A protocol is a set of rules for managing a network. blockchain protocol usually includes rules of consensus, transaction verification and network participation. Agreements often rely on economic incentives - which means they depend on an asset
generally, protocol level assets can also be used as local procts of the protocol (no platform required!) bitcoin is a good example. Bitcoin (capital B) refers to the agreement. The agreement depends on the local asset: bitcoin (small b). This local asset is also used as the end proct: it's the user's means of payment, the store of value, and (to be honest) a degree of hype. Please note that bitcoin does not really provide a platform. It's not very friendly for developers trying to build new procts on it< On the other hand, Ethereum has three levels. It's an agreement that provides the basic rules. This is a platform that enables developers to build new procts on the system. Moreover, because its agreement contains a local asset, it also gets a built-in proct (in the form of ether)
the application fields of blockchain include digital currency, token, finance, anti-counterfeiting traceability, privacy protection, supply chain, entertainment, etc. with the popularity of blockchain and bitcoin, many related top domain names have been registered, which has a great impact on the domain name instry.

2. VAT invoice is also a kind of invoice. Enterprises with the qualification of general VAT taxpayer can apply to the competent state tax department for purchasing VAT invoice and issue it through the anti-counterfeiting tax control system. Enterprises with the qualification of general VAT taxpayer can dect vat by VAT invoice. Special invoice is the abbreviation of "VAT special invoice". An invoice issued for the sale of goods subject to VAT. After the implementation of the Provisional Regulations of the people's Republic of China on value added tax, in order to ensure the implementation of the tax dection system of value-added tax which belongs to extra price tax, it is printed and distributed for the use of enterprises. When taxpayers sell goods or taxable services, they shall issue special VAT invoices to the purchasers, indicating the sales amount and output tax amount respectively. The use of special invoice as dection voucher is limited to the general taxpayers who are both VAT buyers and sellers.

3. Blockchain itself is a tool called decentralization and distrust. For example, when you graate from University, the current practice is to have a certificate recognized and issued by an authoritative authority as a certificate
this setting is troublesome, because it is a piece of paper, which can be forged, and there will be various gaps. The issuing authority is also a person, and there will be various gaps in the middle. As long as it is related to people, there will be various possibilities related to which media
blockchain provides a good opportunity. As soon as you graate, you can generate a record on the blockchain. No one can change this record. This thing exists objectively. As a physical existence, and then as a data existence, blockchain will be generated
in this way, it is easy for anyone who wants to find out where he graated from
this is similar to the big data often used in social networking (WeChat) and payment platforms (Alipay, Yi Bao).

4. Chongqing
jinwowo
analysis
the essence of blockchain
technology is as follows:
blockchain is essentially a value based on P2P
transmission protocol
, we can not only see P2P, but not value transmission
similarly, we can not only see the value transmission, but also the underlying technology of blockchain.

5. The protocol layer of Chongqing jinwowo analysis blockchain includes: from the technology used, the protocol layer mainly includes network programming, distributed algorithm, encryption signature, data storage technology and so on.

6. The analysis of jinwowo network technology is as follows:
1 - consensus mechanism
2 - distributed data
3 - cryptography technology
4 - Smart contract
5 - authentication access
6 - node management, etc.

7. Jinwowo analysis
if we only develop the protocol layer and extension layer, then the application layer will not be realized and verified, which is divorced from the most essential value embodiment of blockchain technology.

8. Chongqing jinwowo analysis blockchain is also a network protocol. If the Internet is a technical protocol for information transmission, then blockchain is a technical protocol for value transmission.

9. TCP (transmission control protocol) and UDP (User Datagram Protocol) belong to transport layer protocol. TCP provides reliable data transmission in IP environment, including data stream transmission, reliability, effective flow control, full plex operation and multiplexing. Through connection oriented, end-to-end and reliable packet delivery. Generally speaking, it is to open up a well connected channel for the data to be sent in advance, and then send the data; UDP does not provide reliability, flow control or error recovery for IP
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. Blockchain is equivalent to the Internet in the 1990s. Bitcoin, Puyin and other digital currencies are applications of blockchain.

10.

12.4km

take bus 857, pass 20 stops, and reach lianbanwai book city station

walk about 710 meters to the South of lianbanxin village