Does yuntu holdings have the concept of blockchain

1.

If you want to understand the application of blockchain, you can refer to many books and opinions, such as illustrated blockchain, blockchain: reshaping the economy and the world, blueprint and guide of new economy, and articles of coin'an community, including a detailed understanding of the platform of coin'an community, with great strength

As the name suggests, blockchain is composed of block and chain. It is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and so on. It is a kind of chain data structure that combines data blocks in order according to the time sequence, and it is a secure and reliable distributed account book that can not be tampered with and forged by means of cryptography

in 2008, in his paper bitcoin: a peer-to-peer e-cash system published by Nakamoto, he first proposed the idea of blockchain and encrypted digital currency. Starting from bitcoin, blockchain has become the underlying technology of various digital currencies

Second, the working principle of blockchain:

1. The basic concepts include: (1) transaction: one operation will change the account status once, such as adding a record 2) Block: records the transaction and status data within a specified time, which is a consensus and preservation of the current account status 3) Chain: it is composed of a series of blocks in chronological order, which is the log record of the whole state change. If you understand the working concept of blockchain, it is not difficult to understand its working principle. Suppose there is a distributed data logbook, which can only be added, not deleted or changed. Its structure is a linear chain formed by a series of "blocks" (which is also the source of the name of "blockchain"), and new data must be put into a new block to be added, The maintenance node can propose a new block, but it must go through a certain consensus mechanism to reach an agreement on the final selected block

2. Take bitcoin as an example to see the working principle of blockchain

the block of bitcoin is divided into block head and block body

Core advantages and characteristics of blockchain

1. The verification, accounting, storage, maintenance and transmission of decentralized blockchain data are all based on distributed system structure. There is no centralized hardware or management organization, and the rights and obligations of any node are equal, The data blocks in the system are jointly maintained by the nodes with maintenance function in the whole system. 2. The open and transparent system is open. In addition to the private information of all parties to the transaction is encrypted, the data of the blockchain is open to all. Anyone can query the blockchain data and develop related applications through the open interface, so the information of the whole system is highly transparent. 3. Security blockchain uses consensus based specifications and Protocols (such as a set of open and transparent algorithms) to enable all nodes in the whole system to exchange data freely and safely in a de trusted environment, so that the trust in "people" is changed into the trust in machines, and any human intervention does not work. 4. Information cannot be tampered with. Once the information is verified and added to the blockchain, it will be stored permanently. Unless more than 51% (almost impossible) nodes in the system can be controlled at the same time, the modification of the database on a single node is invalid. Therefore, the data stability and reliability of the blockchain are extremely high. 5. Anonymity because the exchange between nodes follows a fixed algorithm, and its data interaction does not need trust (the program rules in the blockchain will judge whether the activity is effective or not). Therefore, the counterparties do not need to let the counterparties generate their own trust by disclosing their identities, which is very helpful for credit accumulation

At present, the most popular classification of blockchain is to divide blockchain into public blockchain, private blockchain and consortium blockchain according to different participants

1. Public chain: anyone can participate in the use and maintenance, and can obtain the effective confirmation of the blockchain. Public chain is the earliest blockchain and the most widely used blockchain at present, such as bitcoin blockchain. The information is completely public

if the licensing mechanism is introced, it includes private chain and alliance chain. 2. Private chain: a company or indivial only uses the blockchain technology, enjoys the exclusive write permission of the blockchain, and does not disclose the information. At present, conservative giants (traditional finance) want to experiment with private blockchain, and the application procts of private blockchain are still groping. 3. Alliance chain: it is a blockchain between the public chain and the existing chain, which is jointly controlled by multiple organizations. The use of the chain is managed with authority, which can be controlled by the manager, and also open to others according to the manager's wishes. In addition, according to the different use scenarios and purposes of blockchain, it can be divided into currency chain for the purpose of digital currency, property chain for the purpose of recording property rights, and crowdfunding chain for the purpose of crowdfunding

On May 28, Ma Huateng, CEO of Tencent, proposed the anti-counterfeiting method based on cloud integrated blockchain technology, which is far more efficient than traditional anti-counterfeiting methods. The future anti-counterfeiting verification scenario may only require users to use their mobile phones for simple scanning, and a large number of complete information based on different dimensions can be obtained

take Maotai liquor as an example:

distillery address, proction workshop, operation staff, inspector, delivery time, transportation vehicle information and driver information,

liquor year, raw material source, raw material supplier, storage warehouse number, raw material transportation vehicle and driver information,

all information can be accurately traced, permanently recorded and tampered with

the above information can be easily verified

2. Food safety issues as early as last November, Wal Mart has cooperated with IBM to track the source of food by using blockchain technology, so as to ensure the safety of food and increase the circulation of food to rece costs. For Wal Mart and other large supermarkets, it took a few days to investigate the source of problem food, After using this technology, only one item of proct information is needed to achieve accurate traceability, and important information such as food origin, inspector, supplier, logistics and transportation can quickly find problems in a few minutes. Currently, procts tracked by blockchain include packaging procts from the United States and pork from China

3. Information security

blockchain technology is promoting an information security technology revolution. (1) identity protection PKI is a common public key encryption technology in e-mail, message application, website and other communication applications. However, since the implementation of most PKI, the centralized trusted third party certification authority (CA) is used to issue, activate and store user certificates. Hackers can attack PKI to fake user identity or crack encrypted information

certcoin is the first PKI implementation of blockchain, which comes from MIT, removes the centralized authentication center, and uses blockchain as a distributed ledger for domain name and public key

pomcor company: blockchain PKI implementation path: keep the authentication center, and use blockchain to store the hash value of issued and activated certificates. Users can verify the authenticity of certificates through decentralized and transparent sources, and can also improve the network access performance through local authentication of secret key and signature based on blockchain

(2) data integrity protection

guardtime developed a secret key free signature architecture (Ksi) based on blockchain technology to replace the secret key based data authentication technology. Ksi stores the hash table of the original data and files on the blockchain, runs the hash algorithm to verify other copies, and compares the results with the data stored in the blockchain. Any data tampering will be found quickly because the original hash table is stored in millions of nodes

(3) key infrastructure protection

the "Achilles heel" of the Internet, DDoS has entered the TB era, DDoS is still the simplest weapon for hackers to bring down the big target with low cost, DNS service is the primary target for hackers to carry out large-scale destruction, but blockchain technology is expected to fundamentally solve the problem

The distributed storage of

blockchain makes hacker attacks lose focus. Nebulis is developing a distributed DNS system, which uses Ethereum blockchain and interstellar Internet file system (IPFs, the distributed substitute of HTTP) to register and resolve domain names. The biggest weakness of DNS is caching, which makes DDoS attacks possible. It is also the bane of the centralized government's censorship of social networks and manipulation of DNS registration. A highly transparent and distributed DNS system can effectively prevent any entity, including the government, from arbitrarily manipulating records

(1) digital currency: improve the convenience of currency issuance and use, such as bitcoin and Ethernet in foreign countries, and guorenbao in China

from the use of physical transactions, to physical currency and credit currency, and then to the rise of bitcoin network, more and more people are aware of the distributed ledger blockchain technology behind it, and graally apply it in many scenarios other than digital currency

(2) cross border payment and settlement: realize point-to-point transaction, rece intermediate fees

transfer and payment. At present, the most mature application of blockchain technology is payment and transfer. Blockchain technology can avoid complicated systems, save the process of inter-bank reconciliation and review, and accelerate the settlement speed; Virtual currency can rece transaction costs without the intervention of clearing house. Different countries have different clearing proceres. It takes two or three days for a single remittance to arrive, which is inefficient and accounts for a large proportion of funds in transit. No longer through the third party, through the blockchain technology to form point-to-point payment. By eliminating the link of the third-party institutions, we can make full day payment, real-time payment, withdraw cash quickly and rece the hidden cost, which helps to avoid the capital risk. It is timely and convenient

(3) bills and supply chain financial business: rece human intervention, rece costs and operational risks

value transfer between point-to-point, control and verify physical bills or central system; Intermediaries will be eliminated and human intervention reced. With the improvement of efficiency, financing channels are more unblocked, risks are lower, and multiple parties benefit

(4) securities issuance and Trading: realize quasi real-time asset transfer, accelerate the speed of transaction clearing

the application of blockchain technology can make the process of securities trading more concise, transparent and fast, rece the plication of IT system, and improve the efficiency of market operation. For stocks, blockchain can eliminate paper and pen or electronic form records, rece human errors in trading, and improve the transparency and traceability of trading platform. Citigroup and Nasdaq cooperate to promote blockchain applications

(5) customer credit investigation and anti fraud: rece the cost of legal compliance, prevent financial crimes

the customer information and transaction records recorded in the blockchain help banks identify abnormal transactions and effectively prevent fraud. The technical characteristics of blockchain can change the existing credit reference system, and store the data of customers with bad records in the blockchain when the bank concts "know your customer" (KYC)

equity crowdfunding:

2. Blockchain concept stocks are classified as blockchain concept stocks by the market e to the connection between business and blockchain“ From bitcoin, token, ICO to blockchain, investors have no time to understand the true meaning of the concept, and the upsurge has risen. Many investors take risks to join the "gambling game" quickly. But in fact, from the perspective of revenue, blockchain really just stays at the "concept" level.

3.

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

more & gt& gt;< br />

4. Sto refers to the issuance of securities type warrants. This kind of token can be used to replace stock, bond, loan and other assets. In terms of name, it is similar to ICO and IFO in concept, and it is a way of token issuance. The most prominent feature of STO is that the token issued has the property of securities, which is regulated by securities institutions (such as SEC) and relevant securities laws and regulations
generally speaking, security tokens must be linked to assets, such as cash, shares, fixed income assets, real estate, commodities, etc. They are the intersection of digital assets (tokens) and traditional financial procts - a new technology to improve the old things. If we call cryptocurrency such as bitcoin "programmable currency", then security token can be called "programmable ownership" version of token, that is, any asset under its ownership can be and will be token. If we want to carry out STO, we must first obtain the permission of the regulatory authorities. Therefore, we can regard sto as a more legal ICO. About sto service process
I. vie architecture preparation
First: traditional vie architecture (caymann, Hong Kong, WOFE protocol), with a long cycle, which takes 3-6 months
the second is to register an American company (holding shares through WOFE agreement), with a short period of about 6 weeks<
2. Preparation of legal documents
information prepared by the lawyer team:
evaluation and optimization of expert teams such as American lawyers and Citi Securities Department
saft / ppm
risk disclosure statement
Company structure, etc.
3. Financing channel services
Regd: it can only raise funds for us compliant investors, We will recommend
regs: it can only raise funds for legal countries other than the United States, and recommend investment institutions such as Japan
4. Token issuance
according to different platform rules, we recommend the most suitable platform for token issuance
exchange docking services.

5. The false news put by the makers, the water of the stock market is very deep, you know. The title is concise and comprehensive, as long as a search cloud holdings, this will be in front of the network. The river's lake here is deeper than the sea. I'll give you a club instead of a needle

6. CHUANHENG
002895
Lubei chemical
600727
contemporary Mingcheng
600136
Xingfa group
600141
Luxi Chemical
000830
chuanjinuo
300505
Liuguo chemical
600470
batian
Jinzhengda
002470
sierte
002538
Chengxing
600078
yuntu holding
002539 < br />Hualu Hengsheng
600426
Bao'an, China
00000 9
Tianyuan Group
Juhua stock
600160
Yihua, Hubei
000422
Luoyang molybdenum instry
603993
Yuntianhua
600096
st Tianhua
000912
Wansheng stock
603010

7. What are the agricultural stocks? List of agricultural concept stocks
the government is bound to invest more energy in the work of "agriculture, rural areas and farmers", rural construction, water conservancy, ecation, environment and other aspects will get greater development, and opportunities for A-share related sectors will also appear
first, the meeting put forward key requirements for rural ecological environment governance and rural human settlements governance. Concept stocks related to environmental repair and protection are expected to benefit from: blue water source (sz300070) $, Guozhen environmental protection, capital stock, Zhongshan public utility, ba'an water, Huashi testing, Xianhe environmental protection, etc
Second, water conservancy and other agricultural infrastructure construction related stocks: $Dayu water saving (sz300021) $, Anhui Construction Engineering, Leo, CICC environment, Qianjiang water conservancy, Qinglong management, etc
Third, in the rural work, relevant arrangements have been made for the restoration of pig breeding and the guarantee of supply. Breeding, feed, vaccine and other related stocks are expected to benefit: muyuan stock (sz002714) $, Wenshi stock, new hope, tianbang stock, Tianshan biology, Zhongmu stock, azure biology, etc< Fourth, the conference made a great exposition on the modernization of agriculture including facilities. In addition to the central government's previous emphasis on "smart agriculture" and agricultural science and technology, shares related to seed instry, agricultural machinery and chemical fertilizer are expected to benefit: Longping hi tech, Quanyin hi tech, yuntu holding stock, Fengle Seed Instry, Dunhuang seed instry, Denghai seed instry, Xinyan stock, Huilong stock Sir et al< Fifth, the conference put forward the pilot reform of rural collective property rights system as one of the key points of rural reform, involving agricultural land ownership and other related policies, which is of great significance for safeguarding farmers' land economic rights and interests. Land transfer concept stocks may be affected: Beidahuang, suken agricultural development, Xiangli shares, new agricultural development, etc.

8.

There are a total of 12 listed companies in wangzhe Rongrong concept. Among them, 4 listed companies in wangzhe Rongrong concept are traded on Shanghai Stock Exchange, and 8 listed companies in wangzhe Rongrong concept are traded on Shenzhen Stock Exchange

according to the automatic matching of big data of cloud finance and economics, the listed companies of Wang Zhe Rong concept stocks are: Hengda hi tech (002591), youjiu game (600652), Skyworth Digital (000810), yuntu Holdings (002539), Keda shares (600986), Shenzhen Konka a (000016), Sanwei Tongxin (002115), Hao Holdings (600640), Dr. Peng (600804), Shengtian network (300494), lei Technology (002577), and so on Kaiying network (002517)