Blockchain and cloud technology CBT

1. blockchain technology uses mathematical methods to achieve distributed accounting and solve the trust problem, so as to complete the decentralization, which will bring far-reaching influence in many fields such as communication, finance, Internet of things, government management and so on
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.

2. Blockchain is a concept. Blockchain technology is not only the technology to realize the concept of blockchain, but also the code. Bitcoin is based on the concept of blockchain and developed with blockchain technology.

3. Fishbone mining is an old mining method, which is to dig a mine (2 or 3 grids high), and then open a new mine every 2 grids. This way, the efficiency is very slow, but each of these layers will not be missed

4. In modern free economic society, the price of any commodity or its equivalent (currency) changes because of the demand for it: the demand is greater than the supply, and the price rises; If the demand is less than the supply, the price will fall. Although bitcoin is a virtual currency, it also has the characteristics of currency, and its price also changes with the demand.

5. At present, the exchange rate between vnd and RMB is about 2600:1. You can exchange the money for 7 yuan and 23 cents. The price of a bowl of beef powder is not enough in some places..

6. 1 Dong = 0.0003578 yuan
2000 Dong = 0.7156 yuan is 70 cents

7. Block chain is now a very hot term. As in the past few years, the concept of "Internet plus" has come up with many blocks. But in practical applications, the technology of block chain is still very few. The future direction is to really use the chain of blocks to the actual, medical electronic files, electronic data, electronic contracts, and what kind of things. In the market, blockchain should be used for data preservation, original protection and electronic signing. After all, it is a high security technology. It seems that the original warranty and contract warranty of easysecurity are able to protect data in this way.

9. To put it bluntly, CBT blockchain is virtual currency. Because our country does not allow the virtual currency to carry on the direct transaction, these are playing the edge ball.