How to translate with blockchain Technology
blockchain refers to the technical solution of collective maintenance of a reliable database through centralization and distrust in the past, and it is a technical way for the whole people to participate in bookkeeping. Previous bookkeeping methods were all centralized and needed centralized intermediary, whether it was traditional government, financial institutions, notarization institutions or emerging e-commerce platform and online payment platform
in economic hypothesis, information is sufficient. In fact, it is precisely because of insufficient information that there are very large intermediaries. The existence of intermediaries increases the transaction cost and raises the transaction threshold. In essence, blockchain technology is a large-scale collaboration tool. It makes direct value transfer possible by using pure technology for the first time, and continues the trend of Internet decentralization and disintermediation. Disintermediated blockchain technology will greatly subvert the information intermediary instry
blockchain technology is the basic technology for building bitcoin data structure and encrypted transmission of transaction information, which realizes the issue and transaction of bitcoin. The core of blockchain technology is that all the current participating nodes jointly maintain the transaction and database, so that the transaction is based on the principle of cryptography rather than trust, so that any agreed parties can directly carry out payment transactions without the participation of a third party
technically, a block is a data structure for recording transactions, reflecting the capital flow of a transaction. In the system, the transaction blocks are connected to form a main chain, and all the nodes participating in the calculation record the main chain or part of the main chain
a block contains the following three parts: transaction information, hash formed by the previous block and random number. Transaction information is the task data carried by the block, including the private keys of both parties, the number of transactions, the digital signature of electronic currency, etc; The hash hash formed by the previous block is used to connect the blocks and realize the sequence of past transactions; Random number is the core of the transaction. All nodes compete to calculate the answer of the random number. The node that gets the answer the fastest generates a new block and broadcasts it to all nodes for updating, so as to complete a transaction.
imapp2.0 version of blockchain application center has been officially launched. Imapp is the world's first blockchain app store with universal dividends, which aims to create a super entrance to the blockchain instry and make it easier for users to use blockchain applications. The interface of imapp 2.0 is more concise and beautiful, the function adds news and DAPP, and the content enriches the guessing game. Through imapp, users can browse, forward, download, update and open the application to obtain imapp ecological token IA. The official imapp has reached a strategic cooperation with the bitcoin diamond foundation. Ecocard ia can exchange bitcoin diamond BCD at a certain proportion.
1. Blockchain is a distributed database (system) placed in a non secure environment
2. The blockchain uses cryptography to ensure that the existing data cannot be tampered with
3, the blockchain uses consensus algorithm to reach consensus on new data
the system with the above three properties is blockchain.
From the perspective of technology and architecture, I will tell you my understanding of blockchain in common language
what is blockchain? In a word, blockchain is a storage system. To be more specific, blockchain is a distributed storage system without an administrator and each node has all the data
What are the common storage systems like
as shown in the figure above, the bottom is data, and the top can write data. A space to store data, a software to manage data, provide an interface to write data, this is the storage system. For example, MySQL is the most common storage system
What are the problems of ordinary storage system? There are at least two common problems
the first is the problem of non high availability. There is a dangerous place for data. In technical terms, data is not highly available
The second problem is that there is only one write point. In technical terms, it is a single point of control
How do ordinary storage systems usually solve these two problems
in fact, MySQL can do a master-slave synchronization of al master, master-slave synchronization of al master, two nodes can be written at the same time. If you want to do a multi room multi live data center, in fact, multi room multi live data synchronization. What we should emphasize here is that multi-point writing often leads to the consistency problem of writing conflicts. Take MySQL as an example, suppose that the attribute of a table is self incrementing ID, then the data in the database is 1234 now. If one of the nodes writes and inserts a piece of data, it may become 5, and then these 5 pieces of data are synchronized to another master node, Before synchronization, if another write node inserts a piece of data, a piece of data with self incrementing ID of 5 will be generated. Then, after the generation, synchronize to another node, and the synchronized data will conflict with the two local 5's after it arrives, which will lead to synchronization failure and write consistency conflict. This problem will occur in the case of multi-point writing
how to ensure consistency in multi-point writing
the reform "Swan class" gives you more technical work
however, it is still in the experimental stage, but the capital has quickly followed up the layout. According to the data of the in-depth analysis report on business model innovation and investment opportunities of China's blockchain instry released by foresight Instry Research Institute, from 2012 to 2015, the amount of venture capital in the blockchain field increased by more than 200 times, from US $2 million to US $469 million, and about 205 venture capital institutions participated in the investment
however, although the development of blockchain is still hot, it is far from large-scale application, at least facing problems in technology, application, security and other aspects. More importantly, the government did not follow up, so the relevant enterprises had to consider the policy risk.
finally, in the whole blockchain system, each participant downloads and saves the complete linked list and updates it all the time.
