A simple example is blockchain
blockchain is a term in the field of information technology. In essence, it is a shared database. The data or information stored in it is characterized by "unforgeability", "trace in the whole process", "traceability", "openness and transparency" and "collective maintenance". Based on these characteristics, blockchain technology has laid a solid "trust" foundation, created a reliable "cooperation" mechanism, and has broad application prospects
on January 10, 2019, the state Internet Information Office issued the regulations on the management of blockchain information services. In October 24, 2019, ring the eighteenth collective learning of the Central Political Bureau, general secretary Xi Jinping stressed that "block chain as an important breakthrough in core technology and independent innovation", "accelerating the development of block chain technology and instrial innovation". "Blockchain" has entered the public field of vision and become the focus of social attention
on December 2, 2019, the word was selected into the top ten catchwords of "biting words" in 2019
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Application of blockchain Finance:
since 2016, the major financial giants have also carried out blockchain innovation projects to explore the possibility of applying blockchain Technology in various financial scenarios. In particular, Puyin group took the lead in creating a "blockchain +" standard digital currency
standard digital currency refers to the process of assets identification, evaluation, right confirmation and insurance completed by a third party organization, which is written into the blockchain through careful digital algorithm to form the standard corresponding relationship between assets and digital currency, which is called standard digital currency
in order to realize the great leap forward development of blockchain finance, promote the new development of China's economy, accelerate the circulation of global assets, and realize the dream of rejuvenation that has been struggling for generations, Puyin group will hold the Guiyang strategic development ceremony of Puyin blockchain finance in Guizhou on December 9, 2016
the meeting will discuss the realization of digital circulation of assets by blockchain, the financial transaction mode of blockchain, and the application of blockchain services and social public instry. This conference will mark the beginning of the application of blockchain finance and the change and development of the new financial ecology
blockchain is a distributed shared ledger and database, which has the characteristics of decentralization, distributed storage, encryption algorithm, whole process trace, traceability, collective maintenance, openness and transparency take taking charge of Department funds as an example, the traditional way is to assign a person in the Department to keep accounts and manage the Department funds. This person can directly manipulate the remaining amount or the amount of each use, and make profits from it by taking advantage of his authority. This is the traditional centralized management and in the blockchain management mode, , everyone in the Department has a fund use book, which is added by relevant personnel, and synchronized to their own book after other personnel check. Each transaction will record the usage time, user, amount and content of funds, and generate corresponding serial number for marking. The serial number of each transaction will be stored together with the usage of the next transaction. Each bookkeeping will be encrypted, and so on. At the same time, the account book of each person in the Department is visible to everyone outside, and anyone can query the use of each fund through the account book in the management mode of blockchain, multi person synchronous bookkeeping is "decentralized management" everyone in the department checks and stores it, which is called "consensus mechanism" everyone records the use of each fund, which is called "distributed storage" the serial number generated by the detailed usage of each fund is called "hash value" store the serial number and the usage of the next fund, which is called "whole evidence chain" everyone's account book is visible to everyone outside, which is called "openness and transparency" to query the usage of each fund is called "traceability" if someone wants to tamper with a certain amount of funds, the serial number of the funds will be changed accordingly, and this person needs to tamper with all subsequent account records on the account book and the account book records of all people. However, this can be realized on the premise that it can crack the encryption processing of everyone's every bookkeeping. Moreover, once the system finds that there is an account book different from everyone's, the blockchain will automatically correct the "wrong" account book. This can fully guarantee the originality and non tamperability of blockchain electronic data
blockchain is decentralized, tamper resistant and anonymous
the blockchain system is actually a distributed system
bitcoin system is the earliest blockchain system and the simplest blockchain system
the whole bitcoin system is actually a distributed ledger. This ledger is backed up on each node. When a transaction occurs, it will be broadcast to the network. The miner node (the node solving the problem) in the network will mine (the node solving the problem) to record the transaction. The recorded block will be broadcast to the network, and other nodes will verify and synchronize to their own node's account book.
On September 18, 2018, Hangzhou Internet court was officially put on the chain and became the first court in the world to use blockchain for trial
it is understood that prosecutors can submit electronic evidence such as contract, rights protection process and service process details online through online appeal portal, and notarization office, forensic identification center, CA / RA organization, court and other chain nodes can witness and endorse together to provide one-stop service for prosecutors. Hangzhou Internet court of Zhejiang Province made a public judgment on a case of infringement on the right of network dissemination of works' information, and confirmed the legal effect of electronic data with blockchain technology for the first time
2. In the field of logistics
in early 2018, rookie and tmall global jointly announced that blockchain technology has been used to track, upload and verify the logistics full link information of cross-border imported goods
after all nodes of the logistics chain are connected to the blockchain, the goods can be traced from manufacturers to consumers, forming a complete chain; The more links the commodity is missing, the more likely it is to be a fake proct
3. Electronic invoice
on August 10, 2018, Shenzhen International Trade revolving restaurant issued the country's first blockchain electronic invoice. It is understood that this blockchain electronic invoice was led by Shenzhen Taxation Bureau and provided by Tencent with underlying technology and ability
different from traditional e-invoice and simple e-invoice on the chain, this blockchain e-invoice combines "capital flow and invoice flow", combines invoice issuing with online payment, and gets through the whole process of invoice application, invoice issuing, reimbursement and tax declaration
there are still many practical applications of blockchain. You can learn more about relevant information
this should be the simplest and most crude explanation.