What is the block chain technology? _quku

Author: Wang Zhenxi
Link: https://www.zhihu.com/question/27687960/answer/358360660

First block chain technology is what.

We can complement one in the group play idiom Solitaire game rules, the rules require the next one to answer the person must contain time + the last idiom in a word + their name, this is the chain of the consensus mechanism in the block.

After the rule is determined, the first idiom "12:00 + profusely + Big Ben" is established, which is the Genesis block.

Next, everyone in the group can see their account on the record (green box), which is the block chain of the distributed ledger concept.

Because the group of news is everyone can see, so to prevent someone from recording errors or malicious tampering, this is the block chain of shared ledger concept.

In order to improve the participation of the game, we decided to increase the incentive mechanism, such as every success of the answer to a idiom we reward one of the special coin. This is a bit-currency application based on block chain technology.

At the same time, this rule also considered the accident, such as two people at the same time to answer the successful. So this time to see who thought of the idiom, the first to be the next person to answer the successful, and then can be determined that their "chain" is really recorded. This is the perfect solution to the conflict, that is, the block chain of the fork mechanism.

After playing a period of time, we found that the game is too simple, many people can immediately think out the next answer, in order to maintain the ability to play, then this time can increase the difficulty of the game, such as lyrics solitaire, Word solitaire. This is the random number that determines the difficulty of digging in a block chain.

The benefit is to make sure that the whole game process is trustworthy, if someone wants to modify one of the idioms or the responder by cheating, then the last idiom and the next idiom he also need to change, and then he found himself to modify the previous or next idiom ... This cascade effect ensures that the entire game process is almost impossible to tamper with.

At the same time, because there is no God role (such as the host) to master all the records and conceal the process, so there is no so-called insider and covert operation.

In a word, the block chain is the process by which a group of people who recognize and abide by this rule record continuous information together. China AI and block chain Industry Summit Forum

The following is mainly about the application of block chain technology in the future, a few more words, part of the manuscript from the previous speeches:

We all know that the application of block chain technology has been extended from a single digital currency application to all areas of the economy and society, such as financial services, supply chain management, culture and entertainment, real estate, health care, E-commerce and other application scenarios. The application of the financial field I believe that many people have learned more or less, so they will not say more. This is mainly discussed in other industries.

For example, a mouse in the supply chain industry sells 200 dollars, but the price may exist for middlemen such as suppliers, manufacturers, distributors, and retailers to earn the difference, a layer of prices that comes to the user's hands. So how to use block chain to solve this problem.

First of all, block chain technology can make the transaction data completely open and transparent, and can provide complete information flow. So we can see clearly whether there is a problem here.

Second, the data in the block chain has an tamper-proofing feature. When there is a dispute (buy a fake), you can carry out the burden of proof and accountability. Finally, when the data can not be tampered with the transaction can be traced to the two characteristics of the combination, it can be a perfect solution in the supply chain of goods in the course of the operation of counterfeit and other problems.

Then the block chain technology combined with life can realize how the application scenario.

The first one, in the logistics link to ensure the safety of goods.

The use of block chain technology in logistics industry can optimize resource utilization and improve efficiency, and can record and transfer capital flow, logistics and information flow in real and reliable way. Block chain technology can record the goods in the logistics of all aspects. By creating a consensus network, you can directly locate the problem in the middle of the courier, but also to ensure the traceability of information, so as to avoid the express delivery of the warehouse lost packets, wrong collar and other problems occurred. Express handover to both sides of the private key signature, each courier or express point has its own private key, whether sign or delivery only need to check the block chain can be. The end user did not receive the courier will not sign, courier can not forge signatures. This can eliminate the courier through forged signatures to avoid the assessment, reduce user complaints.

Second, optimize transport routes and schedules.

Container information stored in the database, the use of block chain technology, will determine the container transport routes and scheduling. Can even analyze the past transport experience, and constantly update the best route and schedule, so that transport efficiency greatly improved.

The third is to deal with the difficulty of financing small businesses.

Many enterprises in the logistics supply chain are small enterprises, many enterprises do not get credit rating, they are difficult to obtain the bank or financial institutions financing services. However, the technology of block chain can make the logistics goods have the characteristics of assets, which can help solve the problems mentioned above. Using the Block Chain Foundation platform, the funds can be effectively and rapidly connected to the logistics industry to improve the business environment of SMEs.

The last problem is traceability anti-counterfeiting.

Block chain tamper-proof, data traceability function, can effectively solve the problem of traceability of goods. For example, you can use block chain technology to authenticate the diamond, record the attributes of each diamond, and store it in the block chain. As long as there is illegal trading activities, or fraudulent fraud, it will be detected. In addition to diamonds, block chain technology can also be drugs, art, collectibles, luxury goods, such as traceability anti-counterfeiting.

When the Block chain 2.0 era of speculation, before the heat of the past, block chain 3.0 ERA block chain + application can bring more future possibilities, it is worth our serious thinking.