Blockchain technology is of little use

1. In theory, blockchain technology is very powerful and can subvert all walks of life. But the ideal is full, the reality is backbone. Eight years after its birth, bitcoin soared from worthless to 8000 yuan, and then its price fell. During the period, after countless ups and downs, still strong to go on. The technology application of blockchain is also like this, from no one before to now, it has become the focus of an era. But there are not many successful applications. Bitcoin, Ethereum and decent are relatively successful, but they are still unable to be popularized.

2. It is estimated that it will be 2023. Now the blockchain technology is not mature enough and needs to continue to develop

3. Blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. Blockchain is an important concept of bitcoin. It is essentially a decentralized database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains a batch of information about bitcoin network transactions, Used to verify the validity of its information (anti-counterfeiting) and generate the next block
it can be used in practice:
virtual currency: for example, bitcoin, etc.
Digital Rights: it can authenticate works, prove the existence of text, video, audio and other works, and ensure the authenticity and uniqueness of ownership
public welfare: the relevant information in the public welfare process, such as donation projects, collection details, capital flow, feedback from recipients, can be stored on the blockchain, and can be made transparent and public, which is convenient for social supervision.

4. 1. Data blockchain is an important concept in the bitcoin financial system. It records the transaction data of the whole bitcoin network, and these data are shared by all bitcoin nodes. Through the data block, we can query the history of each bitcoin transaction
2. Example:
Party A, Party B and Party C. all funds of Party A and Party B are kept by Party C. Moreover, each capital transaction should be recorded by C. Now suppose that Party A and Party B each have one million yuan in their custody. Then:
If Party A spends 80000 yuan to Party B, then Party C will subtract 80000 yuan from the account book and increase 80000 yuan from Party B
If Party B returns 50000 yuan to Party A, Party C will add 50000 yuan to Party A's account book and subtract 50000 yuan from Party B's account book
If Party A spends 50000 yuan to Party B, then Party C subtracts 50000 yuan from the account book and adds 50000 yuan to the account book
3. The function of data blockchain is similar to that of C's account book, which records the ownership of bitcoin and the transaction of bitcoin. But this "account book" is recorded by every bitcoin miner's mining software on the network. If a bitcoin transaction is confirmed by the data blockchain, the relevant information will be recorded in the data blockchain. Bitcoin's "account book" is called data blockchain. All the data blockchains on the network constitute the distributed network database system of bitcoin
4. The essence of data blockchain technology is a decentralized and distributed data storage, transmission and proof method, which replaces the dependence of the Internet on the central server with data blocks, so that all data changes or transactions are recorded in a cloud system. In theory, it realizes the self proof of data in data transmission, This kind of point-to-point verification will proce a "basic protocol", which is a new form of distributed artificial intelligence. It will establish a new interface and sharing interface between human brain intelligence and machine intelligence.

5. It's not that there are not many application scenarios, it's just that the application of blockchain is difficult to be implemented now, and there are some technical or other reasons

6. First of all, the Chinese you give can become more fluent -
why not take a bus in the city
secondly, English translation is -
why not take a bus and go around the city?