Scientist blockchain

1.

blockchain includes public blockchain, joint (instry) blockchain and private blockchain. Public chain point-to-point e-cash system: bitcoin, smart contract and decentralized application platform: Ethereum

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. In essence, it is 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 bitcoin network transaction information, Used to verify the validity of its information (anti-counterfeiting) and generate the next block

extended data

according to the different degree of blockchain network centralization, three kinds of blockchains under different application scenarios are differentiated:

1. The blockchain with the whole network open and without user authorization mechanism is called public chain

2. The authorized nodes are allowed to join the network, and the information can be viewed according to the authority. It is often used in the inter agency blockchain, which is called alliance chain or instry chain

3. All the nodes in the network are in the hands of one organization, which is called private chain

alliance chain and private chain are also called licensing chain, and public chain is called non licensing chain

blockchain features

1, 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. Decentralization is the most prominent and essential feature of blockchain

2. Openness. Blockchain technology is based on 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

3. 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

4. Safety. As long as 51% of all data nodes cannot be controlled, the network data cannot be arbitrarily manipulated 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 can be transferred anonymously

2.

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

if such technology wants to be put into application, the biggest problem is the "Impossible Triangle problem"

that is, scalability, decentralization and security cannot be achieved at the same time, and only two of them can be achieved

most of the existing public chain projects in the market are difficult to put into use on a large scale

3. At present, blockchain is leading the trend of the economic market in various Internet instries, and it is more significant in the medical field. In addition, e to high rendancy, impossibility of tampering, low cost and the ability to manage multi signature complex permissions, blockchain may be the best data storage scheme that human beings can find at present. Medical institutions are using blockchain technology to realize the confidentiality of patients' privacy information
take the PPT big health protection ecological platform on the market as an example:
five applications of blockchain in the medical field:
1. In the aspect of EHR medical treatment, the main application of blockchain is the preservation of personal medical records, which can be understood as the electronic medical records on the blockchain. If you think of the medical record as an account book, originally it is in the hands of various hospitals, and the patients themselves do not master it, so the patients have no way to obtain their own medical records and historical information, which will cause great trouble for the patients to seek medical treatment, because the doctors can not fully understand your medical records. But now, if we can use blockchain technology to save, there will be historical data of personal medical care. Whether we see a doctor or plan for our own health, there will be historical data to use. The real master of this data is the patient himself, not a hospital or a third-party organization
2. DNA wallet gene and medical data can be safely stored by using blockchain technology and obtained by using private key, which will form a DNA wallet. This enables healthcare providers to share and count patient data safely, and helps pharmaceutical companies develop drugs more efficiently. And this model is graally being established
3. The development of bitcoin payment blockchain technology promotes bitcoin payment and gives patients more choices for insurance payment. Although it also depends on the development of bitcoin in the market, the insurance companies that provide this way also have greater advantages than their competitors. For health insurance companies, blockchain is being established as a part of financial services
4. Drug anti-counterfeiting is similar to coding anti-counterfeiting technology. For drugs using blockchain technology, there is a scraped surface on the surface of drug packaging box, and a special verification label under it, which is compared with blockchain technology to ensure the legitimacy of drugs
5. Protein folding e to the rapid process of protein folding, Stanford University previously relied on very expensive supercomputers to simulate the protein folding process. This approach is obviously expensive and has a single point of failure. By using blockchain, they can choose to use a huge distributed network for high-speed computing. This example will greatly attract other companies that use expensive supercomputers. With the development of medical technology, medical data is playing a more and more important role in the aspects of patient identity background, past medical history, and medical payment records. Medical data may be a person's most private data, but e to network operation errors or hacker attacks and other problems, in the past, these personal privacy data were leaked on a large scale. For example, anthem once leaked 80 million patient and employee records, and UCLA health once leaked 4.5 million patient data. The medical convenience brought by blockchain includes: as more and more health and preventive care are provided in a virtual environment, such as at home, at work and so on. Open and viable tracking, validation, and care delivery will become very important for patients, payers, suppliers, scientists, and regulators. The development of these new ohh blockchains in the clinical community will prepare for the study of patients' behavior, and for the important data access of supplier reimbursement, rule compliance, security monitoring and patient compliance in the future. Blockchain is a near perfect technology (not necessarily implemented at present). It can easily and safely access ooh data while protecting the maximum privacy, and rece the interest risk of all patients, including patients themselves, families, caregivers, clinics, suppliers, insurance companies and all stakeholders related to patients' health.

4. First, open the Tencent Smart Security page
and then apply for Yudian terminal security system
and then use the Tencent Yudian to kill the virus

5. Bitcoin is a scam. Many people say that bitcoin is a game of pyramid selling and drumming, which proves that those people still have a little insight, a little vision and a little intelligence, but they don't see the final truth after the truth of the matter!!! If you want to enter the market to speculate in bitcoin, what is the biggest benefit? Ha ha, the answer is unexpected! yes! Yes, Intel, NVIDIA and AMD make the most money! You want to fry bitcoin, you want to mine! So what do you need? yes! It's equipment! You see, because some stupid people believe this kind of nonsense, Intel NVIDIA and AMD's CPUs and graphics cards are the most popular in recent years, and they also drive the mining machine and motherboard and so on! Amd even turned over the counter attack with the money from mining! When you wake up, other people's graphics processors are sold out. No matter whether you take over the disk or not, the big three have already got the money! Top up my answer! Let more people know the super truth after the truth! Who am I? I am the emperor of truth! I mean the big three benefit the most! Don't you understand when it comes to this? Obviously, I can't say it. Secretly, it means that they are the originators. Do you understand that the so-called virtual currency was first fired from their public relations group (other guys just follow suit and add fuel to the flames). Don't fool me with blocklinks all the time. I've specially bought books. Your so-called operation is right in theory, but who will supervise it, Who will be the guarantor? I also said that my family has tens of thousands of acres of land, and millions of tons of gold! I can even issue a new currency and hype myself. In the end, there is only one conclusion. The so-called blockchain is pyramid selling brainwashing. Don't really think that people are easy to cheat.

6. At present, Internet breeding software includes all people raising cattle, Lenong's home, Aishang raising pig, chicken housekeeper, ugly ckling farm, etc. all people raising cattle, falling in love with raising pig and chicken housekeeper are income oriented apps with little user interaction. They are investment income oriented apps. Ugly ckling farm is an app developed by Shenzhen ugly ckling Innovation Technology Co., Ltd., focusing on user breeding experience, Real time online breeding and offline breeding can be synchronized. Those who have children at home and need to raise their own cks to supplement their families can raise their own cks and eat by themselves through this platform, which is visible in real time, green and pollution-free, and recommended by the wall.

7. Alchemy is to help physical stores open aggregate payment. If you use Alchemy to collect money, you can get alchemy every time you collect money. The higher the alchemy, the more points you get every night. This point can be realized!

8. Wang Donglin is a gifted scientist and entrepreneur. After he graated from University, he started his business in it, software and cloud storage. Maybe he was too successful, so he began to challenge the blockchain. Maybe he saw the future of blockchain development. It seems that yottachain has been launched. It's quite successful. It's among the top 20 in the global market value.

9.

On June 4, 2018, Xiao Wei, chief scientist of network blockchain, released a new blockchain project at the opening ceremony of the 2018 chain Valley lecture hall

According to the report,

the network is currently completing the transformation of its own enterprises into blockchain based on this super chain. Although the details are not disclosed, it is a significant development for the huge network

as a leader in China's search engine instry, the network, founded in 2000, has a capital of about 86.65 billion US dollars and more than 2 billion international users. It also develops artificial intelligence procts such as autonomous driving and translation tools

after the Chinese government cracked down on cryptocurrency, the Internet removed all relevant advertisements in February, which is almost in step with international peers such as Google. On the other hand, the company actively developed blockchain technology, and released the digital image property management platform "totem" based on blockchain and the blockchain pet game "leitzdog"

10. The consequences of illegal mining are serious
illegal mining of mineral resources is a criminal offence
not only will they be punished by criminal law,
but also their proction equipment and illegal income will be confiscated.