introduction
Nowadays, the blockchain has been fired very hot. We believe it must have its inner heat. Today, I will take you to understand why the blockchain has such great capabilities!
Internet information exchange
We all know that the advent of the Internet has greatly facilitated the exchange of information between people. Now you can chat, talk and even video through WeChat and their loved ones far away.
the Internet
You can also access any information online through your computer. You can even shop online. Therefore, it can be said that the Internet has completely solved the need for our information exchange.
However, with the progress of the times, people's needs are getting higher and higher. This simple exchange of information is not enough to meet the requirements. People began to imagine, can transmit value on the Internet? For example, I can send you a dollar. This demand is easy to achieve in real life, but it has become extremely difficult on the Internet. why? Let me give you an example: If you are a photographer, you take a very beautiful picture, someone bought a high price, you give the picture to the buyer through the Internet. In real life, the image you sell is not yours, you give something to others in your hands, but in the network, you can right-click, copy and then sell a copy, so you succeed Cloned an identical picture. If it is not pictures but money? In the Internet, any data can be copied, if the money on the Internet, then it will not be copied unlimited copy. And, because cyber-hackers are powerful and data can be altered, exchange of value has not worked well in previous cyberspace.
Electronic money
When it comes to this, we may have a question: how can not exchange value, every day I use WeChat to send a red envelope ah, my money is in the bank card, and can also be paid online! That's right, everybody online payment now is e-cash. Someone may ask: Can electronic cash be copied and tampered with? Actually, of course, but due to the important value of electronic cash, there is generally an agency that will establish some security measures to protect the security of electronic cash. For example, the money inside your WeChat is kept by Tencent Company. Tencent has a very strong security system to protect the security of these electronic cash, and the major banks also spend most of their energy on security. Formally because of these powerful security systems behind, to ensure that your account is accurate money, or else hackers stole your money every minute.
Bitcoin
Bitcoin
In fact, as early as the birth of electronic money, there was a group of enthusiastic scientific researchers looking for an alternative to electronic cash. Why replace e-cash? This is to talk about digression. Now people have money in the bank, the reason is that security (indifferent to interest can be considered a factor). Who do not trust a lot of money on the home, hides in his pocket. However, banks are not always safe. In the economic crisis of 2008, the two major U.S. banks closed down one after another, and many people's money was frozen. Of course, this is not a major factor. For thousands of years, the monetary system has been centralized and central. Those who pursue liberal beliefs envision whether they can hairstyle an anarchy and uncontrolled currency.
In 2008, a new name: bitcoin appeared. Bitcoin contrast electronic cash has the following characteristics:
Decentralization: There is no agency issue or control
Security: Still safe to save without the control of a centralized agency
Based on these two characteristics, Bitcoin is on fire. Because once you have bitcoin, no one can take it away, whether it be government or hacker ... Bitcoin prices are rising and people are starting to pay attention to what technology makes bitcoin so secure that it can be decentralized?
Blockchain - a natural and secure database
Blockchain is actually a secure database (simple principle can focus on me, then look at the history article: "Know the blockchain: a piece of text to understand the blockchain") Any data placed in the blockchain is unique Can not be changed. Blockchain does not require an extra security defense system compared to a bank's highly secure system, so it guarantees security without human and material resources, so I say the blockchain is: a naturally secure database.
Therefore, the blockchain provides a secure storage environment for the Internet and makes it possible for the transmission of Internet value.
Transformation of Information Transmission to Value Transmission - The Second Revolution of Internet
The emergence of the blockchain is not as simple as the concept of a secure database. Depending on its decentralization and security features, many applications can rely on him to set up on the Internet. Back to the front said: the problem of photographers selling pictures: If the photographer is asked to put the picture information and transaction information in the block chain, then even if he copied how many pictures are not helpful, because he infringed, this picture has been Proved to be sold to someone else. Prove the blockchain.
Therefore, with the blockchain, we can put all the valuable data on the Internet. Currency, intellectual property, personal information and so on without concern for membership issues and information disclosure issues. These functions rely on the traditional Internet can not be achieved, even if it can achieve great human and financial commitment. A blockchain technology is a major change in the Internet.
Smart contracts - trusted machines
In the blockchain, we will refer to the concept of smart contracts. In fact, smart contracts are common in life, for example: vending machines, will sell goods automatically. Products like this are everywhere, but these smartphones do not seem safe until the blockchain appears. If hackers control a property transfer system, then the loss will be immeasurable. As a result, traditional smart systems are not trusted by people despite being insecure. However, the appearance of blockchain provides a safe execution environment for the intelligent system. If a contract is placed in the blockchain, no one can deny that it can not be modified.
For example, landlords and tenants usually sign housing contracts, but tenants often have defaults on their rent. Even though the contract clearly stipulates that tenants need to pay rent on a monthly basis, no one will pay for rent in arrears Things went to court. However, if the landlord's door lock is connected to the blockchain via an intelligent system that requires monthly payments to unlock the door, he can not enter the door once the tenant owes his room. This provision is actually the content of the contract, and the contract is written in the blockchain, connected to the intelligent system, then no one can not breach of contract. This digitized contract is called a smart contract.
end
In fact, before the advent of the blockchain, the Internet security we are exploring is actually relatively safe, all of which are relatively safeguarded by an agency, a third party or the government. But the blockchain has solved the decentralized security, giving people trust and making the Internet from information technology exchange to an era of value exchange. Therefore, it is deserved to say that blockchain is a revolutionary technology.