Four blockchain celebrities
1.002657 Zhongke Jincai
2.300663 Kelan software
3.002152 radio and television express
4.300079 digital technology
5.300542 Xinchen technology
6.600570 Hengsheng electronics
< P > 7.300561 Huijin technology8.002063 high beam software
9.603106 Hengyin finance
blockchain concept stocks may become the leading stocks as follows:
1. Blockchain concept stock 1: easy to see stock (600093. SH) concept stock index
the company's main supply chain management has been actively transforming in recent years. On the one hand, the company strives to improve the business scale of supply chain management and commercial factoring
on the other hand, with the transformation of financial technology as the center and the application of blockchain technology in supply chain finance as the breakthrough, the whole policy has made every effort to promote the development of the "easy to see block" system. In the first half of 2017, the development of the "easy to see block" System 1.0 has been successfully completed, and it has been commercialized in the fields of medicine and large commodities
2. Blockchain concept stock 2: gawaita
is a leading financial information manufacturer in China. Relying on its own advantages in bank IT solutions and bank customer resources, gawaita provides bank it system cloud services
3, blockchain concept stock 3: Xinchen technology is mainly engaged in application software development business, software and hardware system integration business and professional technical service business. In recent years, Xinchen technology has made bold attempts in innovation. The company has made some progress in the application of new technologies such as cloud computing, big data, artificial intelligence and blockchain in the financial instry
the domestic L / C business system based on blockchain technology has been successfully launched in banks, and is expected to graally become a new growth point of the company's software solution business
the leading stock index is the stock that has influence and appeal on other stocks in the same instry ring the stock market speculation in a certain period, and its rise and fall often play a guiding and exemplary role in the rise and fall of other stocks in the same instry
leading stock is not unchangeable, its status can only be maintained for a period of time. The basis of becoming a leading stock is that any information related to a stock will be immediately reflected in the stock price
conditions for leading stocks:
1. Leading stocks must start from the trading board, which is the most accurate attack signal for both sides. Indivial stocks that can't be trading can't be leading stocks.
2. Leading stocks are the best low price stocks, and low price stocks are sought after by many investors, because high price stocks are difficult to speculate
3. The circulation market of leading stocks should be moderate, suitable for large capital operation and retail investors chasing up and down, and large market value stocks and small cap stocks can not be the leader
4. Leading stocks meet the daily KDJ, weekly KDJ and monthly KDJ at the same time
5. Leading stocks usually rise against the market limit at the end of market decline when the market panics, or start ahead of the market, and undergo a round of market decline test
the leading stock index is the stock that has influence and appeal on other stocks in the same instry ring the stock market speculation in a certain period, and its rise and fall often play a guiding and exemplary role in the rise and fall of other stocks in the same instry. Leading stock is not immutable, its status can only be maintained for a period of time
< H2 > reference: network leading stocksFrom the perspective of technology and architecture, I will tell you my understanding of blockchain in common language
what is blockchain? In a word, blockchain is a storage system. To be more specific, blockchain is a distributed storage system without an administrator and each node has all the data
What are the common storage systems like
first, how to ensure high availability
the common storage system usually uses "rendancy" to solve the problem of high availability. As shown in the figure above, if the data can be copied into several copies and rendant to multiple places, high availability can be guaranteed. The data in one place is hung, and there is data in other places. For example, the master-slave cluster of MySQL is the same principle, and the raid of disk is also the same principle
two points need to be emphasized in this place are: data rendancy often leads to consistency problems
1. For example, in the master-slave cluster of MySQL, there is actually a delay in reading and writing, which means there is a inconsistency in reading and writing in a short period of time. This is a side effect of data rendancy
The second point is that data rendancy often reces the efficiency of writing, because data synchronization also consumes resources. If you add two slave libraries, the write efficiency will be affected. The common storage system is to use rendancy to ensure the high availability of dataso the second question, ordinary storage system, can write more
the answer is yes, for example, take this graph as an example:
in fact, MySQL can do a master-slave synchronization of al masters, master-slave synchronization of al masters, two nodes can be written at the same time. If you want to do a multi room multi live data center, in fact, multi room multi live data synchronization. What we should emphasize here is that multi-point writing often leads to the consistency problem of writing conflicts. Take MySQL as an example, suppose that the attribute of a table is self incrementing ID, then the data in the database is 1234 now. If one of the nodes writes and inserts a piece of data, it may become 5, and then these 5 pieces of data are synchronized to another master node, Before synchronization, if another write node inserts a piece of data, a piece of data with self incrementing ID of 5 will be generated. Then, after the generation, synchronize to another node, and the synchronized data will conflict with the two local 5's after it arrives, which will lead to synchronization failure and write consistency conflict. This problem will occur in the case of multi-point writing
how to ensure consistency in multi-point writing
the reform "Swan class" gives you more technical work
in the early stage of the development of the blockchain instry, many enterprises and institutions formed a blockchain alliance to share the research results of blockchain technology and seek wider application of blockchain technology
in the past two years, blockchain alliances have emerged. As of July 2017, there are R3 composed of more than 40 international banks, hyperledger initiated by Linux foundation, Zhongguancun blockchain Instry Alliance located in the core hinterland of China's Internet, China ledger alliance jointly initiated by 11 institutions, gold chain alliance jointly established by 25 financial institutions, and so on Russia's blockchain alliance, known as "Russian version R3", seeks to combine with micro finance, Qianhai international blockchain ecosphere alliance led by Shenzhen Qianhai administration, and Lujiazui blockchain Financial Development Alliance in Lujiazui
many organizations and talents join to promote the vigorous development of blockchain.
each block is filled with transaction records, and the blocks are connected in sequence to form a chain structure, which is the blockchain ledger
blockchain technology divides the data to be stored in the database into different blocks. Taking bitcoin as an example, when miners generate new blocks, they need to calculate the new hash value and random number according to the hash value of the previous block, the new transaction block and the random number. Each block is linked to the back of the previous block through specific information, and connected in chronological order to present a complete set of data. In other words, each block is generated on the basis of the previous block data, which ensures the uniqueness of the blockchain data
each blockchain database is essentially an event chain connected in chronological order, which uses the cryptographic mechanism specified in the protocol for authentication to ensure that it will not be tampered with or forged. With the popularity of blockchain and bitcoin, many related top domain names have been registered, which has a great impact on the domain name instry
blockchain technology has three obvious characteristics: openness, security and uniqueness
openness mainly refers to that the stored information in the blockchain is completely open to all participants. This is mainly determined by the point-to-point network storage mode of the blockchain. In the blockchain network, each node can store a of the blockchain, and the uniqueness of the blockchain can ensure that the is exactly the same between different nodes
security mainly refers to that the information stored in the blockchain block is saved after being processed by digital encryption technology, and only the private key holder can decrypt the information to obtain the real information. Other members can only see and verify the integrity and uniqueness of information, but cannot see the real information
uniqueness is mainly e to the fact that the information on the blockchain cannot be tampered with once it is on the chain, so it is unique. Of course, the uniqueness here also includes the uniqueness in space, that is, all nodes have only one version of information, and also includes the uniqueness in time, that is, the historical data cannot be changed. This uniqueness also means that the blockchain maintains the characteristics of a unique main chain in the process of operation, and once other chains appear, it is a bifurcation. The emergence of bifurcation will lead to the plication of blockchain in two different spatial dimensions. Of course, to solve this problem, we need to set reasonable consensus rules to avoid
there is no distinction between mobile and non mobile end in blockchain, and if there is one, it is also a gimmick.
in the digital money market, there are some people who make money, but there are also many people who lose money. Those who lose money eventually cut the flesh and leave the market, and those who make money at the beginning also slowly cut the flesh and leave the market.
especially those who invest in marketing money, more people lose money.