Blockchain story
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 
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
blockchain is a decentralized distributed ledger database . The advantage of this distributed ledger is that buyers and sellers can trade directly without any intermediary. Everyone has a backup, even if you lose this, it will not be affected
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blockchain application field
1, financial field
blockchain has potential huge application value in international exchange, letter of credit, equity registration, stock exchange and other financial fields. The application of blockchain technology in the financial instry can save the third-party intermediary link and realize the point-to-point direct docking, so as to greatly rece the cost and quickly complete the transaction payment
2. The Internet of things and logistics
blockchain can also be naturally combined in the field of Internet of things and logistics. Through blockchain, we can rece logistics costs, trace the proction and delivery process of goods, and improve the efficiency of supply chain management. This field is considered as a promising application direction of blockchain
3. The data stored on the public welfare field
blockchain is highly reliable and tamperable, which is naturally suitable for social public welfare scenarios. The relevant information in the public welfare process, such as donation project, collection details, fund flow, recipient feedback, etc., can be stored on the blockchain, and can be made transparent and public, which is convenient for social supervision
4. In the field of insurance
in terms of insurance claims, insurance institutions are responsible for fund collection, investment and claims settlement, and often have higher management and operation costs. Through the application of smart contract, there is no need for the applicant to apply or the insurance company to approve. As long as the claim conditions are triggered, the automatic claim settlement of the policy can be realized
the Internet search index shows that the search of blockchain showed an explosive growth in mid December 2017. Blockchain technology is an important concept of bitcoin, and it is also the underlying technology of bitcoin. The application prospect of blockchain is very broad, and now the gap of blockchain technical talents is very large, 72% of domestic blockchain job demand is technical jobs
many companies can't find talents in this field, so they are eager for talents. Blockchain training institutions can deliver blockchain talents to the society, which is a good thing and contribute to the society
the answer is not good, hope to adopt it!