What can't blockchain be used for

1. blockchain is a public account book. You can't say that your natural gas and chopsticks violate the law, because they are just tools
Chinese Mahjong: the world's earliest blockchain project
first of all, a initiates an application. I want to play mahjong and set up a mahjong Bureau, which is equivalent to creating a block, and this block will be broadcast to B, C, D, a, B, C, C, C, C, C, D, D, D, D, D, D, D, D, D, D, D, D, D, D, D, D, D, D, D, D, D D...
in the process of playing mahjong, the above four people constantly play cards, which can be understood as mining, through what to mine? Mahjong machine can understand the mineralization machine. These four miners are the so-called miners. These four miners collide from 144 mahjong, and any right card can be Hu card. We can understand the 144 mahjong as a series of hash values (numbers). The process of Hu card is called computational power. Until Hu card, it means that the right hash value is collided and you can get a reward, Each person will pay the corresponding chips to C and put them in the blockchain. The reward is bitcoin or other virtual coins
Why do the other three people take the initiative to reward C? That's because these people have automatically reached a consensus that C has indeed won, and everyone has recorded the account, including the family members who are sitting next to buy horses. It's not good to deny it, otherwise when it comes out that the character is not good, no one will play with him again. After all, the circle is very important
when we reached a consensus, we didn't see any intermediary or third party judging that C had won, and the rewards given to C didn't need to be transferred to C through the third party. All of them were direct point-to-point transactions. This process was decentralization. The card players (miners) recorded their own achievements in the first game, and the third team won the first game, After the record is completed, a complete block is generated. But remember, this is only the first round. In the whole blockchain, this is just a node. The first eight rounds are finished, that is, eight nodes (blocks). Eight blocks are connected together to form a complete account book, which is the blockchain. Because everyone has one account book, it is a distributed account book. The purpose is to prevent someone from tampering with records. In the end, it is clear who wins or loses.

2.

A: the basic characteristics of blockchain

I. decentralization
blockchain technology does not rely on additional third-party management institutions or hardware facilities, and there is no central control. In addition to the self-contained blockchain itself, each node realizes information self verification, transmission and management through distributed accounting and storage

Second, openness

the foundation of blockchain technology is open source. In addition to the private information of all parties involved in the transaction is encrypted, the data of blockchain is open to everyone. Anyone can query blockchain data and develop related applications through the open interface, so the information of the whole system is highly transparent

Third, independence

based on consensus specifications and Protocols (similar to various mathematical algorithms such as hash algorithm used by bitcoin), the whole blockchain system does not rely on other third parties, and all nodes can automatically and safely verify and exchange data in the system without any human intervention

Four, safety

as long as 51% of all data nodes cannot be controlled, the network data cannot be arbitrarily controlled and modified, which makes the blockchain itself relatively safe and avoids subjective and artificial data changes

5. Anonymity

unless there are legal requirements, technically speaking, the identity information of each block node does not need to be disclosed or verified, and the information transmission can be anonymous

3.

At the bottom right of the front page of the post bar you want to apply for, there is a position of "information of this bar". There will be a text link of "apply for a small bar owner", as shown in the figure. Click:

this small bar owner's application requirements. Different post bar requirements are different, so it depends on what kind of post bar requirements you apply for

4. Player 1: s key to put the hook, W key to throw explosives
player 2: key to put the hook, W key to throw explosives.

5. What blockchain technology can't do
the white paper on China's blockchain technology and application development (2016) issued by the Ministry of instry and information technology points out that blockchain is mainly used in the Internet of things, intelligent manufacturing, supply chain management, digital asset trading and other fields, which brings new opportunities for the development of new generation information technologies such as cloud computing, big data, mobile Internet, etc, It may also be able to trigger a new round of technological innovation and instrial change. Open source communities, instry alliances, backbone enterprises, start-ups, investment institutions, financial institutions and regulators are the participants in the development of blockchain technology and applications
as we all know, blockchain technology is first used in the financial field. The identity of blockchain is a decentralized distributed ledger database. Its features of transparent information, secure data storage and transaction process without any intermediary platform are particularly outstanding in this field, especially for supervision, anti-counterfeiting and improving processing efficiency... Blockchain technology seems to be full of unlimited possibilities

in China, financial enterprises, Internet enterprises, it enterprises and manufacturing enterprises also actively participate in the research and development and application promotion of blockchain technology, which makes the development momentum of blockchain rapid. For example, SF Express has been developing and deploying blockchain medicine traceability and UAV medicine transportation services in the field of medicine logistics, and recently it has officially realized the implementation of blockchain medicine traceability
however, no matter how great the role of blockchain is, when a new event or concept appears, we should pay more attention to all aspects of things. You know, the concept of blockchain was born in 2009 with the emergence of bitcoin, and it was not until around the beginning of 2018 that blockchain was graally known in China, and then Alibaba, Internet, thunderbolt and other large enterprises joined in one after another. It took nine years to develop the business that blockchain technology can support, but it seemed to burst out suddenly in 2018, It can even be said that it is the same as the outbreak without warning. Therefore, investors should be alert, and consider carefully whether to invest or not in combination with China's national conditions, social development degree and other factors, when China's domestic blockchain technology is just starting and immature
what blockchain technology can't do is first created by immature technology. At least in China, when blockchain is just emerging, the technology platform is not as good as that of foreign countries, and the business supported by technology should not be widely launched. The technical personnel applying blockchain should be patient, learn more advanced experience, and do things in detail
secondly, blockchain technology cannot regulate the fair, fair and effective operation of blockchain market. For example, as soon as blockchain technology has entered China, there are many fraudsters with the name of blockchain. They raise money and make money. It is difficult for the public to judge the difference between "technological innovation" and "fund-raising innovation", so they are easy to be cheated. Therefore, in the case of blockchain, it's up to time to make the technology independent and controllable and adapt to a variety of scenarios; If we want to make its value controllable, or give full play to its maximum value, it is decided by the supervision of government organizations, regulatory departments, experts and so on
even though the possibility of blockchain technology is infinite, the instry and market under it are in chaos frequently. If we do not list them one by one, there are still too few places that blockchain can "manage". In terms of how to correctly use blockchain technology to do what it should do, people should not be confused first, which shows that the whole society has a long way to go.