Psychological testing system based on blockchain

1. 1. What is the technology of blockchain?

2.

The hottest things this year are "bitcoin", "Ethereum" and all kinds of cryptocurrencies, so hot that even aunts and uncles are about to start talking about them. It is no exaggeration to say that 2017 is the first year of the development of cryptocurrency and blockchain technology

as the underlying technology behind bitcoin, the concept of blockchain has only been mentioned in the past two or three years, although as early as 2009, "Nakamoto Tsung" released bitcoin. After this wave of digital currency boom, the concept of blockchain technology has really entered the eyes of all walks of life. I'm afraid it's too early to mention the wide application of blockchain technology, which is still in a very early stage of development. However, e to the arrival of the boom, many technicians and teams have contributed their efforts to build some blockchain concept projects“ Needless to say, as the first application of blockchain technology, bitcoin of "Zhongben cong" has realized the function of distributed ledger, which can realize the first decentralized value transmission of human beings. It can be said that it is "blockchain 1.0". Then Ethereum invented the smart contract, which extended the function of blockchain technology to build applications. It is well deserved to be defined as "blockchain 2.0". However, the blockchain concept projects that came out later did not realize this leap forward role, but only improved to a certain extent at the application level, so they can not be called "blockchain 3.0"

so what is "blockchain 3.0"? Maybe bitcoin OS is the answer: an operation system that is completely based on blockchain technology and follows the concept of blockchain technology. In the 1980s, before Microsoft released the windows operating system, personal computers and Internet technology were still in a non systematic state and could not be popularized. After the release, personal computers were allowed to enter ordinary people's homes, making PC and Internet universal application procts. Recently, bitcoin OS team announced the implementation of the bifurcations of bitcoin and Ethereum on Christmas day, so as to officially publish the plan of developing blockchain OS

anyone who knows a little bit about blockchain technology knows that bitcoin solves the problem of account book, while Ethereum is a smart contract to realize application expansion. Later, a team will launch a distributed storage project. But these systems with only a single functional mole are not "operating systems". The traditional definition of operating system is a huge management and control program, which includes five management functions: process and processor management, job management, storage management, device management and file management. In fact, the OS based on blockchain does not need to change all the five functional blocks into distributed ones, as long as the parts related to the external transmission of value and information can be decentralized and distributed. Therefore, the blockchain operating system should have at least three functions of "account system management, computing resource management and storage resource management", which can realize distributed ledger, edge computing and edge storage. Although it is still too early to define the instry standard in this way, bitcoin OS team is committed to realizing the blockchain OS possessed by these three functional blocks first, and then improving it through iteration

according to the bitcoin OS team, the name "bitcoin OS" is actually "blockchain OS", which is named after "bitcoin", which is also a tribute to the inventor "Satoshi Nakamoto". At present, from the technical details given by the bitcoin OS team, we may be able to see some aspects of this "blockchain 3.0" project

firstly, the management function of the account book system supports locating the ownership of resources according to the account ID, such as the private key; Computing resource management can obtain corresponding computing resources according to the demand, support edge computing, and share distributed computing power. In addition, storage resource management can use storage resources according to the demand, and support edge storage. Compared with bitcoin OS, Ethereum only supports account system and smart contract, which can not meet the distribution of distributed computing tasks. Ethereum only supports the fair execution of contract code, let alone the management of storage resources. So Ethereum is only a custom calculator

in addition, it is worth mentioning that bitcoin OS self customized enhanced smart contract. It supports two modes, which are more flexible and efficient

1. Central computing mode: the outgoing node is responsible for executing the smart contract, and both the incoming parameters and the output results support sipfs to be stored in the storage node

Distributed computing mode: ordinary nodes can claim computing tasks, input parameters and output results support sipfs storage to storage nodes

finally, we also need to mention the built-in sipfs super interstellar file system of bitcoin OS. Sipfs can realize the decentralized storage of technical input parameters and output parameters. At the same time, the file has a life cycle, and the DNA description of the file descriptor is recorded on the blockchain. The file descriptor of sipfs does not exist on the blockchain, but it will be stored in a separate file descriptor data file. After the end of the file life cycle, the blockchain will automatically delete the file descriptor, Realize the intelligent slimming of blockchain

"blockchain 3.0" is worth looking forward to, and bitcoin OS team, as the vanguard, is worth paying attention to and encouraging. We are looking forward to the real blockchain operating system

3. The existing conditions can't handle such a large-scale liquidation, but with the blockchain system, the confirmation of the right of each transaction is fixed. The liquidation only needs to be carried out according to the existing results, and there is no need for review. A lot of manpower and material resources are saved in the process, and the speed of liquidation will certainly be greatly increased, which is determined by the non tamperable characteristics of the blockchain, For example, Nanjing Rongze has a similar block chain inclusive financial platform.

4. It depends on the type. It's the cheapest on campus trusteeship, about 350-400 yuan, about 500-600 yuan for ordinary small tables, and about 600-700 yuan for regular Bell's parents. What you get for what you pay for is mainly about your own affordability
please adopt

5. Think with your pig brain, is this discount platform the father of game developer? Why did the game authorities give him such a low price? 6% off. Then who will go to the government to charge money? Do you think if you sell things in business, will you ask others to collect money for you? And if you sell something for ten yuan, he will give you five yuan to sell it and then give you four yuan. You understand that? What are you thinking. How can we get a 4.6% discount? It's simple. 1. The server of the game should be maintained by your platform. You pay for electricity, water, rent and employees' salaries. Pay for new activities, new roles, new maps and new plots. Responsible for the cost of game promotion, you come out, you find people to promote. Then I'll give you a 4.6% discount. Got it? And these discount platforms recharge virtual currency on their platform and then transfer to the game. Think about this routine. Take Netease, a big game manufacturer, for example, how dare he give a discount of 4.6 for so many games he represents? The game developer didn't beat him to death. If you really want to play the game discount, you can only go to the official website to recharge. Other people's game developers can't have made 10 yuan, let you go to other places to charge 10 yuan and then give him 4 yuan. The server group is with the developer. What data does your account login have that people can see. Is it difficult for the discount platform to make up 6 yuan for the 4 yuan you charged to the official? There is also a discount platform to buy the game. As I said above, the game developers develop the game, then sell the right to the game platform, and then they are responsible for maintenance. Then the game platform advertisement said, alas, this game is only 40% off. But the game is his. The original price is 4 yuan. I'll tell you 10 yuan. Now the discount is only 4 yuan. Do you understand this routine? And then you feel like you're making money. But when you enter the game, you will find that it's all V's and there are too many explosions. Then such a game opens once a few days. And then in the integration let you compare money. Even if it's 10% off, it's more expensive than playing games. Then you will find that those who don't have enough money will not play. Game platform to continue to open a few times, and then cut a few waves of leeks. Squeeze you dry, not many people in the game finished, she shut down, because the server is open, every day is to ask for money. But at this time, he has an excuse. He will say that the game was not developed by him, ha ha ha. He's just a discount platform. What do you do;

6.

Guochuangshengshi blockchain Technology (Shenzhen) Co., Ltd. is a limited liability company incorporated in Luohu District, Shenzhen City, Guangdong Province on August 16, 2017, with its registered address at 1413, block C, world financial center, No. 118, Shennan East Road, Nanhu street, Luohu District, Shenzhen city

the unified social credit code / registration number of guochuangshengshi blockchain Technology (Shenzhen) Co., Ltd. is 91440300ma5ep3u635, and the legal person is Zhang Hongfeng. At present, the company is in business

the business scope of guochuangshengshi blockchain Technology (Shenzhen) Co., Ltd. is: blockchain technology development; Network software technology development, technology services, technology consulting, technology transfer; Computer animation design; Computer system technical service; Research and development and planning of sports activities; R & D and sales of sports and cultural procts; Enterprise management consulting and information consulting (excluding network information service, talent intermediary service, securities and other restricted items); The development of digital integral management system; Technology development and technology transfer of intelligent management system and data management software; Database management; Invest and set up instries (specific projects will be declared separately); Development and sales of online game software

check more information of guochuangshengshi blockchain Technology (Shenzhen) Co., Ltd. through aiqicha

7. New technology is born to overthrow tradition! The law of human competition! Traditional instries do not realize how to start transformation! Of course, transformation is as painful as cutting meat

8. It's known that it's a Ponzi scheme. Whether the blockchain can be traded or not can be verified by the owner himself. My mother-in-law can't persuade her to do so. She claims that she will go public. After many investigations, I found that the so-called VR maker, namely shede alliance, does not exist. The only two remaining companies are
: China dream shede Group Co., Ltd., registered in Hong Kong, After investigation, it has been cancelled in June, 18, and has no business activities since its registration. TIANCHAO Network Technology Co., Ltd., registered in Shanghai, has a registered capital of only 2 million yuan. Since 2016, it has no relevant financial statements and tax payment records. It is a leather bag company. The website of blockchain company is Io terminated and belongs to the domain name of British Indian Ocean. The maintenance fee is only a few hundred yuan a year
behind the high returns, there are opportunities to kill. Please think twice before you act. If you have invested, I will not say

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is a company with good technology and excellent service