How many enterprises cooperate in rec blockchain

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

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

4.

Blockchain concept stocks revealed: only 58 of 197 companies have real business landing, and 37 of them are just hot

since October 28, blockchain concept stocks have performed well, with daily trading limit. According to zinc link, these & quot; Blockchain & quot; The main business of listed companies is not blockchain, and only a few of them have real application, most of them are still in the exploration stage

according to Dongfang fortune choice, on October 28, there were 153 companies in the A-share blockchain concept sector, and as of November 20, the number had increased to 197

through sorting out the public data such as interactive trading platform, announcement and relevant news, zinc link found that only 58 of 197 A-share blockchain listed companies have real business landing, and 37 companies said that they are not involved in any blockchain business at present

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5. Beijing, Fujian, etc. we also have a Changsha blockchain Application Technology Instry Association in Changsha. Recently, the SMIC blockchain launched by Changsha hi tech Zone is also operated by its member units.

6. 2015 data: ie11 browser ranked first with 25.26% share (26.9% in August), chrome 45 ranked second with 15.25% market share. IE8 ranked third with a share of 11.71% (up slightly from 10.92% in August). Since September, Firefox 40 has ranked fourth with 7.58% market share. A statistic from StatCounter shows that Chrome browser ranks first with a market share of 56.51%, which is the same as that in August. Since September, it has jumped to the second place with 17.34% market share, which is unprecedented. The market share of Internet Explorer was 17.11%, compared with 17.51% in the same period of August. Although the market share declined slightly, the ranking dropped to the third place. Safari's market share was 4.27%, up slightly from 4.17% in July. Opera, the fifth largest company, had a market share of 1.84%, down slightly from 1.86% in August.

7.

1. Bone is a blockchain digital currency issued by Tangshan shuisongyuan Biotechnology Co., Ltd

2. Platinum coin will be officially traded on Swiss top exchange rfinex (r net for short)

3. With the launch of platinum coin, all the procts of shuisongyuan suppliers, as well as hotels, restaurants and other instries, can join shuisongyuan blockchain and pay with platinum coin

extended data

future trend

1. In November 2016, the central bank prepared digital currency, and it is likely that cash will not exist in ten years

2. In November 2016, China digital currency Research Institute was established to cultivate high-level talents of digital currency, carry out digital currency research, consultation, development planning and related activities. It is a non-profit unit with legal license approved by relevant ministries and commissions, and is committed to promoting the integrated development of scientific research and practice of digital currency instry

Up to now, Hangzhou City, Shenzhen City and Guizhou Province have become the three hot areas for the central bank's digital currency pilot. It is reported that Hangzhou is actively promoting the planning and construction of Qiantang River financial harbor, including the blockchain instry. Hangzhou will build the first blockchain Instrial Park in China, which is located in the Internet Finance town of Xihu District, surrounded by ant financial services, e-commerce bank, Zhejiang University and its science and Technology Park and other well-known enterprises and parks

legislation

in August 2018, Elina sidorenko, an official of Russia's digital currency risk assessment department, wrote in her own telegram that a Russian digital currency bill, which takes into account social comments and the interests of enterprises and financial institutions, will be issued soon, and will clarify the rights, responsibilities and obligations of relevant participants in digital currency

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9. It's OK to play Jedi, but it's not recommended. The e5-2630 at this price is mostly a foreign LJ that has been eliminated from mining machinery. CPU, motherboard and memory are all available. There is no guarantee for the after-sales service of this kind of thing. I don't know how long it will last.

10. Ordinary water purifier is composed of cotton, activated carbon, ultrafiltration membrane and RO reverse osmosis membrane. RO membrane is the technology with the strongest filtration precision at present. It can filter all bacteria, impurities and trace elements in water, and also can filter minerals and beneficial trace elements in water. As for whether pure water is good for human health or not, it has always been a controversial issue in the water purification instry. However, I think there is no fish when the water is pure. Why is pure water so cheap and Evian so expensive. If you want to solve the problem that the pure water machine can not mineralize, you can only add a mineralized filter element at the back of the pure water machine. At present, the main mineralization technology on the market is Dow's small-t Maifanshi filter. Maifanshi is a kind of non-toxic, harmless and bioactive compound mineral or medicinal rock. The parent rocks of maifanite are usually intermediate and acid magmatic rocks. In addition to common Ca, Mg, Si, Al, Fe, K and Na, there are also a few rare elements, rare earth elements and radioactive elements. Maifan stone has the properties of adsorption, solubility, pH adjustment, biological activity and mineralization. However, an instrial adhesive is added in the manufacturing process of Maifan stone filter element, which is easy to cause secondary pollution of water quality after long-term soaking, and the surface area of such Maifan stone ball is too large to achieve mineralization effect. There are weak alkaline ceramic ball filter, far-infrared ceramic, negative potential ball, tourmaline filter and so on, all of which have the same problems. The far-infrared mineralization method was originally used for health promotion, but we do not know whether the water quality can be changed. Pure water remineralization technology has been researched and developed for a long time at home and abroad. Now it is widely used in the field of seawater desalination. Large scale seawater remineralization projects use direct addition of chemicals or limestone to naturally mineralize under the condition of carbon dioxide. The scientific research team of China University of Geosciences, relying on the discipline advantages of hydrogeology and geological materials of China University of Geosciences and the R & D platform of State Key Laboratory, has developed PCC mineral processing modification technology based on the research of mineral crystal structure and crystal chemistry through advanced surface and interface engineering means, so as to modify different minerals, Increase the specific surface area and ion exchange adsorption capacity of minerals; Based on the mechanism of synergetic antagonism in mineral dissolution, it is difficult to control in the remineralization of domestic pure water. Trace element spectrum matching technology can realize the stable and controllable release of trace element spectrum; Based on the preparation technology of silver zinc composite antibacterial volcanic stone, using the porous structure of natural volcanic stone as the skeleton, loaded with nano silver zinc oxide antibacterial agent, compared with traditional antibacterial materials, the antibacterial effect is better, and has no toxic side effects on human body. By simulating the hydrogeochemical process of spring water formation, the water quality evolution of long seepage length can be realized at the scale of filter element, and the function of mineral water proction by household equipment can be realized. In the aspect of effect, the trace elements in the effluent of Shuishi mineralized filter element are rich, rubidium, molybdenum, selenium and other anticancer trace elements are equivalent to Yiyun mineral water, the contents of strontium, zinc and other trace elements reach the national standard for drinking mineral water, and the pH and molecular group size are close to those of natural mineral water such as Yiyun.