Recently, the chain is mentioned frequently hear block, and in October 24, 2019 meeting, a collective learning eighteenth stressed on the block chain technology development status and trends, "as the block chain an important breakthrough in core technology innovation "," block chain to accelerate and promote technological innovation and industrial development. " Block chain heat has been high, had for some time, occupy our minds are all kinds of digital currency is one thing that comes along only a block chain. But now, with the domestic digital currency "decline" block chain re-entered the public view. Concept was first block chain by the inventors of the present Satoshi bitcoin forth. Initially, the block chain just for the digital currency Bitcoin and design, but technical community has found other potential uses of the technology, and received wide attention.
So popular term, it may be open to three words, to understand every word, but they covered merged laps. I wanted something so popular, I am sure you are very curious about what it is, exactly what are the advantages to get the favor of various industries. After hope reading this article, you can have a more profound understanding of the block chain.
What is the block chain
Block chain (blockchain), is essentially an open distributed database for storing information (data) in a computer file. Block chain name comes from its structural characteristics: the file data blocks, each block is linked to the previous block, forming a chain; and each block contains data, such as when the transaction records and the blocks are edited or record created, information (data) has a timestamp, which is the origin of the block chain.
Block chain technology (Blockchain technology), also known as distributed technology books, is an Internet database technology, which is characterized by decentralized, open and transparent, so that everyone can participate in the database record. At the same time, it is different from the centralized database, block chains not controlled by any person or entity, can be copied and distributed on the complete data for each node in the network. Thus, in the block chain, "everyone is equal."
The above explanation is quite official, also looked after might "sleepwalk." By following the World "two Gouzi sick to the hospital," the story takes you into the block chain, to truly understand the power of block chain.
Familiar with public cloud and took a small number of articles partner know that two Gouzi is a senior network engineer. Senior, but also through the efforts of return. Two Gouzi always thought he was still young, often burn the midnight oil contribute to the company, the result over time often find themselves powerless body, take the sweating. So, two Gouzi heartless took a day off, go to community hospitals to see a doctor.
To the hospitals, to the doctor and complained like a description of what the disease, only in exchange for a sentence Tuomohengfei doctor floating, "go for a checkup." Two Gouzi helpless, got up to check before you do over a pile of checks, the doctor looked at the report said, "This is nothing if not cure the disease, to go to the hospital big point of it." Two Gouzi one to panic, so serious, I was so young, I still have a lot of dreams, I can not shi. So he quickly booked three hospitals of the city, after Hangchihangchi went to the hospital, I thought this would be spared, can be cured immediately, the results of the doctor rather abruptly blurting, "Come on, the first to be checked." Two Gouzi Mongolia, "I have just done, and ye need to do it again?"
I believe we often encounter such a situation, the same check, go to different hospitals have to repeat, is not that a waste of time, mostly a waste of money! This thing is very difficult to understand for many people ... ... In fact, we can put every hospital as a database of patients to see the doctor, the patient's doctor will upload the information into the hospital's own database. But every hospital databases are independent of each tube of each, are not mutually ventilation. So, although later in the hospital for a check, but for the hospital, the patient's information is gone, so it is necessary to start from scratch. It is encountered above the two Gouzi.
So, if the patient information of each hospital can be seen in all the hospital after medical treatment is not will save both money and the highly efficient? That is, each hospital patient information regarded uploaded to a place, then information for all hospitals, packaged into blocks are connected together. At the same time, each hospital will generate a copy of the backup data from all hospitals. In this way, we can see a hospital patient information for all hospitals upload. Two Gouzi go to another hospital, doctors need only call up the information before the hospital, also do not do duplicate check it out.
These packaged up information, is one block. So, these blocks strung together a chain What is it? The answer, in contrast, that is, the block chain.
Advantages block chain technology
By way of example, we understand the basic concepts and principles of the block chain. So exactly what advantages it worth getting all walks of life who respected it? In addition to sharing information distributed nodes, block chain technology has the following several advantages:
1. Safer
In a conventional information system security scheme, the security depends on access control layers of fortification. For example dedicated room, private networks, as well as a full range of security software, so under strict protection, the interface on which it is out of a dedicated access routes. Anyone must pass the authentication, authorization, by a dedicated channel to enter the database, reading or writing data, and leave history.
But then strict protective measures will have "holes", called "imperfection" hacker attack is good at information data through these "loopholes." However, if the use of the block chain technology? Even if a node is not afraid of being attacked, because the other node or all of the remaining data. Take the example above, the hospital, the hospital just before each patient's own stored information, which if a hospital was attacked, the hospital's information on gone. But after the block with the chain, not just the patient's information is unique to a hospital. Even if a hospital was attacked, the patient's information is not lost. At this time, each hospital would not be the center of each, all of the data is the same, which is also called to the center.
2. To prevent tampering
In the block chain, once the information is validated and added to the block will be permanently stored and can not be modified. This is also thanks to its clever design complemented by cryptographic algorithms and consensus achieve a database history can not be tampered with. Block chain took a one-way hash algorithm, the irreversibility of time lead to any attempt to tamper with the invasion of blocks in the data chain information can easily be traced, and therefore improves the security of the corresponding.
We have said before, each hospital to upload their information, make up such a block chain. And this information, each will remain one. So when someone wants to maliciously tamper with the information, all hospitals will reject this behavior as inconsistent with surviving, which is distributed books.
3. concealment
Talking about this, you may have questions, since each node information is fully shared and open, it would mean that everyone can see the information? That data will not leak it? Nothing to worry about. Because the data block in the chain is encrypted, the surface looks just gibberish. Only through authorization, data can be displayed.
It is also because the chain has a block to the center, can not be tampered with, full marks to stay, can be traced, collective defense, open and transparent these advantages, it carries the information will be real and effective, this technology will be recognized by all countries .
Applications block chain technology
Read here, I believe you will find the block chain that so powerful, indeed the country with emphasis on innovative technologies. From a technical perspective, the block chain involves a lot of technical problems in mathematics, cryptography, Internet and computer programming; but from the application point of view, we can cross the specific technical issues, with the basic principles to think about complex phenomena. The huge block chain scenarios, basically a block-based chain can solve the problem of asymmetric information, collaborate trust and unity among multiple subjects.
1. Data Authenticity
Block chain "tamper-proof" feature, provides a solution for the social development "as evidence" problem. As long as possible to ensure the authenticity of the data and upload information, then the block chain can be resolved "save" and "evidence" information problem. In high finance, justice, health care, copyright and other requirements for data integrity field, the block chain can create a safe, efficient application scenarios. Meanwhile, the block chain due to the recording of all transaction information, and therefore the block chain itself can form a credit, to provide new ideas for achieving social credit.
2. Information Sharing
Block chain "distributed" feature, you can get through "data barrier" between departments, information and data sharing. In the public service, government data block chain to achieve cross-sectoral, cross-regional joint maintenance and use, lead to better government service experience for the people. At present, Hangzhou has introduced a "run only once" to transact business characteristics. Can be expected, as the "block chain + government" landing, handling inter-departmental business collaboration will become the norm, no longer have to leave after the run around.
3. mutual trust
Block chain to form a "consensus mechanism" that can solve the problem of asymmetric information, the real from the "Internet information" to "trusted Internet". Trust is the cornerstone of the market economy, and it is a scarce commodity. Many problems difficult to solve economic development, largely because of a lack of trust, high transaction costs, high risk of default. Block chain can enhance the credibility of information on the downstream supply chain, open and transparent information on the chain, to solve the "crisis of confidence" in society.
Now, block chain technology has been extended to digital finance, networking, fields of intelligent manufacturing, supply chain management, digital asset transactions. At present, the world's major countries are speeding up the layout of the block chain technology development. China has a good foundation in the field of chain block, block chain technology to accelerate and promote innovation and industrial development, and actively promote the economic and social integration block chain development.
Of course, the future has to block chain, but also to remain rational. Block chain technology and encryption money attendant, but the block chain technology innovation is not equal to the virtual currency speculation. At the same time block chain is still in the early stages of development, need further development and improvement in terms of safety, standards and regulation. Avoid the herd, duplication, to be able to open the imagination block chain in an orderly competition. China has a good foundation in the field of the block chain, relatively abundant talent pool, application scenarios rich, perfectly placed to gain a leading position in this new track.
How the future, we'll see!
Recommended Reading
Everyone is talking about cloud security, in the end is how is it?