Blockchain bear market 6

1. No
although the currency circle is in a bear market, blockchain is not useless without cryptocurrency
the blockchain instry has developed rapidly in recent years, and more and more blockchain technologies appear in front of people. More and more blockchain applications are landing, blockchain e-invoice, blockchain traceability, blockchain finance and so on. Talents in the blockchain instry are also very scarce. Many colleges and universities in China have set up blockchain courses to provide talents for the blockchain instry
the development of a new technology will inevitably encounter setbacks, and the blockchain instry will grow stronger in the future.

2. There are six hierarchical structures in the blockchain, which are from bottom to top: data layer, network layer, consensus layer, incentive layer, contract layer and application layer
1. Data layer
the data layer is the lowest layer in the six hierarchies of the blockchain. We can understand the data layer as a database, but for the blockchain, this database is a tamperable and distributed database, which is what we call "distributed ledger"
in the data layer, that is, the "distributed ledger", the data information on the blockchain is stored, and the blockchain structure, asymmetric encryption technology, hash algorithm and other technical means of the block are encapsulated to ensure the security of the data in the case of the whole network being open. The specific method is:
in the blockchain network, nodes use consensus algorithm to maintain the consistency of data layer (that is, the distributed database), and use asymmetric encryption and hash algorithm in cryptography to ensure the non usurpation and traceability of the distributed database
This constitutes the bottom data structure of blockchain technology. However, it is not enough to have a distributed database. We also need to let the data information in the database be shared and exchanged. Next, we will introce the upper layer of the data layer - the network layer
Second, network layer
the network system of blockchain is essentially a P2P (point-to-point) network. Point to point means that there is no need for an intermediate link or centralized server to control the system. All resources and services in the network are distributed in the hands of each node, and the transmission of information is also a direct communication between the two nodes. However, it should be noted that P2P
(peer-to-peer) was not invented by Nakamoto, and the blockchain only integrates this technology
therefore, the network layer of blockchain is actually a particularly powerful point-to-point network system. In this system, each node can not only proce information, but also receive information, just like sending e-mail. You can write your own e-mail, and you can also receive the e-mail sent to you by others
in the blockchain network, nodes need to jointly maintain the blockchain system. Every time a node creates a new block, it needs to notify other nodes in the form of broadcast. After receiving the information, other nodes verify the block, and then create a new block on the basis of the block. In this way, the whole network can jointly maintain and update the general ledger of the blockchain system
however, what rules should the whole network follow to maintain and update the general ledger of the blockchain system? This involves the so-called "laws and regulations" (rules), which we will introce next: the consensus layer
Third, consensus layer
in the world of blockchain, consensus simply means that the whole network should maintain and update the general ledger of blockchain system according to a unified and agreed rule, which is similar to the rule of updating data. It is one of the core technologies of blockchain and the governance mechanism of blockchain community to let highly dispersed nodes reach consensus efficiently in the decentralized blockchain network
at present, the mainstream consensus mechanism algorithms include: proof of work of bitcoin (POW), proof of rights and interests of Ethereum (POS), proof of rights and interests of EOS (dpos), etc
we now introce the data layer, network layer and consensus layer. These three layers ensure that there are data, networks and rules for updating data on the network. However, there is no free lunch in the world. How can nodes actively participate in the maintenance of the blockchain system? Here is the incentive layer, which we will introce next: incentive layer< 4. Incentive layer
incentive layer is the so-called mining mechanism, which can be understood as incentive mechanism: you can get as much reward as you contribute to the blockchain system. With this incentive mechanism, the whole network nodes can be encouraged to participate in the data recording and maintenance on the blockchain
mining mechanism and consensus mechanism are actually the same truth. Consensus mechanism can be understood as the company's general rules and regulations, while mining mechanism can be understood as the reward rules for what you do well in the general rules and regulations
just like the consensus mechanism POW of bitcoin, it stipulates that more work pays more. Whoever can find the correct hash value first can get a certain amount of bitcoin reward
and Ethereum's POS stipulates that the older the holder is, the more likely he or she will be rewarded
it should be noted that the incentive layer is generally only available for the public chain, because the public chain must rely on the nodes of the whole network to jointly maintain data, so there must be a set of incentive mechanism to encourage the nodes of the whole network to participate in the construction and maintenance of the blockchain system, so as to ensure the security and reliability of the blockchain system
the blockchain is safe and reliable, and it is not intelligent enough, right? The contract layer we will introce next can make the blockchain system more intelligent
v. contract layer
Contract layer mainly includes various scripts, codes, algorithm mechanisms and smart contracts, which is the basis of block chain programming. What we call "smart contract" is at the contract level
if the bitcoin system is not intelligent enough, the "smart contract" proposed by Ethereum can meet many application scenarios. The principle of the contract layer is to embed the code into the blockchain system, in this way to realize the smart contract that can be customized. In this way, on the blockchain system, once the terms of the smart contract are triggered, the system can automatically execute commands< Finally, the application layer. The application layer is very simple. As the name suggests, it is a variety of application scenarios and cases of blockchain. What we now call "blockchain +" is the so-called application layer. At present, the blockchain applications that have been implemented are mainly various blockchain applications built on
eth, EOS and other public chains. There are more applications of gambling and games, and the real practical applications have not yet appeared.

3. A storm - "blockchain" has suddenly set off on the Internet, with overwhelming "blockchain" information and words such as "black technology", "revolution" and "overnight wealth". People are confused about this "blockchain". What is this "blockchain"? Why is it so hot

2018 is known as the "first year of blockchain". The booming development of blockchain instry makes enterprises and even bat business giants have set foot on the blockchain one after another

what fields can blockchain technology be applied to in the future

I. in the financial field, blockchain is extracted as the underlying technology of bitcoin, so it is naturally applicable to the financial field. At present, the application and exploration of blockchain in the financial field are mainly in several aspects: digital currency, payment and clearing, digital bill, bank credit management, proof of rights and interests, stock exchange trading, insurance management, financial audit, etc< In May br />
2018, the Tencent innovation tax laboratory, jointly established by the Tencent and the State Taxation Bureau, promoted the in-depth cooperation in the Internet plus tax field by using cloud computing, AI, block chaining and big data technology. At present, "smart tax" will focus on exploring digital invoice solutions based on blockchain, and the goal is to solve the problem of fake tickets first< Nowadays, China's e-commerce instry is developing rapidly, exposing some hidden dangers of "fake and shoddy" at the same time of rapid development, and it is difficult to distinguish the true and false goods. However, after the application of blockchain technology, we can trace the true and false procts in the supply chain. At present, both Jingdong and Alibaba have entered the blockchain and want to use the blockchain technology to crack down on "counterfeiting"

as a new e-commerce model, blockchain e-commerce is graally emerging, which can track the source of goods and query the authenticity by using the characteristics of blockchain

the barn app makes use of the characteristics of the blockchain technology to trace the whole process of goods through the blockchain technology, applies the blockchain technology to the user's shopping, sharing, browsing and other scenes, and presents it to the user through the token (negotiable digital proof of rights and interests), in which each participant can share and use the data as needed, To achieve high reliability of data trading market, low-cost transactions and multi win<

in the field of film and television

film and television is known as a "high-income" and "high-risk" instry. Whether a film and television project is successful or not, its initial investment is huge. There are many factors affecting the success of a film and television project: script, actors, proction team, publicity and distribution, box office, etc. the use of blockchain technology can effectively solve these problems

taking the familiar HLW chain as an example, through the user's investment in the script of the project side on HLW chain, the user can select the script and participate in the proction, publicity and viewing process of film and television. To ensure the quality of the film, it can effectively and accurately estimate the box office revenue after the film is released, and it can also introce investment funds. Blockchain technology has the characteristics of distributed ledger, and everyone can participate in bookkeeping, so as to

4. TOBI, regular, can also guarantee the security of funds

5. Blockchain technology is very popular now, but now it is a bear market in the currency circle. Most digital currencies are falling, and many projects are returning to zero directly. As a result, many companies are thinking of ways to circle money with high returns and high risks. Pay attention to loving Western Europe, don't be carried away by high returns, and invest carefully

6. Blockchain is a technology that has nothing to do with Niuxiong and has been developing steadily
there are many choices in currency speculation, depending on your own ability and luck.

7. You can go to coin egg to invest in the token of SEC social e-commerce chain. Now the price can be said to be very low. After reading the news on the official website, we have launched the test network, which is one step closer to the landing. It should be a value coin. I'm optimistic about their idea of combining blockchain technology with social e-commerce. E-commerce has developed rapidly, and social e-commerce has developed for several years. I'm looking forward to their landing.

8. Shanghai Pudong Development Bank Shajing sub branch address: first floor of Shenggao Hotel, Central Road, Shajing Street

9. 1. Walk about 650 meters from Gongming Street office station to Gongming bus (Gongming Square) station, take 310-315 loop line (take 15 stations) to Shajing Street office station. (total mileage: 16500 meters; Time required: about 55 minutes * Note: for reference only, factors such as waiting, walking and traffic jam are not considered.)
. Walk about 260 meters from Gongming Street office station to Jiahua Department Store Station (Gongming), take No. 788 (take 10 stops) to Shangyuan Hotel station, then transfer to 310-315 loop line (take 4 stops) and get off at Shajing Street office station. (total mileage: 17100 meters; Time required: about 55 minutes * Note: for reference only, factors such as waiting, walking and traffic jam are not considered.)
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4. Walk 690 meters from Gongming Street office station to Gongming bus (Gongming Square) station, take 310-315 loop line (88 stops) to Shajing Street office station. (total mileage: 110200 meters; Time required: about 330 minutes * Note: for reference only, factors such as waiting, walking and traffic jam are not considered.)
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5. Walk 270 meters from Gongming Street office station to Gongming comprehensive market terminal, take route 766 Nantou line (6 stops) to Shajing passenger transport center station, then take 310-315 loop line (3 stops) to Shajing Street office station. (total mileage: 16600 meters; Time required: about 45 minutes * Note: for reference only, factors such as waiting, walking and traffic jam are not considered.)
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6. Walk about 270 meters from Gongming Street office station to Gongming comprehensive market terminal, take No. 766 Nantou line (take 6 stops) to Shajing passenger transport center station, and then take No. 782 (take 7 stops) to Shajing Street office station across the road. (total mileage: 17100 meters; Time required: about 60 minutes * Note: for reference only, factors such as waiting for bus, walking and traffic jam are not considered.)
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7. Walk about 270 meters from Gongming Street office station to Gongming comprehensive market terminal, take No. 766 Nantou line (take 7 stops) to Shangliao market station (Chuangxin Road), go to another Road (National Road 107), transfer to 310-315 ring line (take 2 stops) to Shajing Street office station. (total mileage: About 17500 meters; total mileage: 1; Time required: about 45 minutes * Note: for reference only, factors such as waiting, walking and traffic jam are not considered.)
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8. Walk about 260 meters from Gongming Street office station to Jiahua Department Store Station (Gongming), take No. 788 (11 stops) to Shajing passenger station terminal, then take No. 782 (7 stops) to Shajing Street office station. (total mileage: 17500 meters; Time required: about 65 minutes * Note: for reference only, factors such as waiting for bus, walking and traffic jam are not considered.)
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9. Walk 370 meters from Gongming Street office station to Hongye Hotel station, take No. 301 (Fenghuang Guangming) (6 stops) to Songgang bus station, and then transfer to 310-315 loop line (9 stops) to Shajing Street office station. (total mileage: 16900 meters; Time required: about 60 minutes * Note: for reference only, factors such as waiting for bus, walking and traffic jam are not considered.)
. From Gongming bus station (Changchun Road) about 200m to Gongming bus (Gongming Square) station, take 310-315 loop line (take 15 stops) to Shajing Street office station. (total mileage: 16500m; Time required: about 55 minutes * Note: for reference only, factors such as waiting, walking and traffic jam are not considered.)
walk about 150 meters from Gongming bus station (Changchun Road) to Gongming bus (Gongming Square) station, take 310-315 loop line (88 stops) to Shajing Street office station. (total mileage: 110, 200 meters; Time required: about 330 minutes * Note: for reference only, factors such as waiting, walking and traffic jam are not considered.)