Blockchain technology can essentially help everyone have their own "book", and each person can achieve "decentralized transactions" after owning the books. That is to say: with the technology of blockchain, it can realize the central agent without Alipay, without ZF supervision, only simple "buy" and "sell".
Q1: First of all, what is a “centralized transaction”?
1 The transactions between you and the seller are all around Alipay (center).
2 If the Alipay system has a problem, it will cause the transaction to fail.
3 Although you simply bought a mobile phone, you and the seller must provide extra information to the third party.
4 In extreme cases, if Alipay runs away or if you don't recognize your transaction\ Alipay is banned, then you are tragedy.
Q2: So, what is a “decentralized transaction”?
You only need to exchange money and mobile phones with the seller, and then both parties claim to have completed the transaction and it is OK.
It can be seen that decentralized processing is more convenient, and there is no need to worry about information leakage that is not related to the transaction. Imagine that if there are tens of thousands of transactions in progress, the decentralized approach will save a lot of resources, making the entire transaction autonomous and simplistic, and eliminating the risk of being controlled by the centralized agent.
Decentralization is the subversive feature of blockchain technology. It does not require a centralization agent, and realizes a point-to-point direct interaction, making the information interaction mode of high-efficiency, large-scale and non-centralized agents a reality.
Q3: There is no authoritative “centralized agent” like Alipay. How to ensure the transaction is accurate and effective?
For example: If there is no authoritative centralization agent, Zhang San borrowed 100 yuan from me one day, but what if I don’t pay back? Here are the other characteristics of the blockchain.
(1) How to ensure accuracy - establish a "decentralized system"
If A borrows B 100 dollars, this time, A yells in the crowd, "I am A, I lent B 100 dollars!",
B also shouted in the crowd, "I am B, A loaned me 100 yuan!",
At this time, the passers-by, A, B, D, Ding, heard the news.
Therefore, everyone in the heart silently remembered that "A loaned B100 dollars."
At this time, a decentralized system was established. This system does not require a bank, nor does it require a loan agreement or receipt. Strictly speaking, it does not even require a long-term trust relationship between people.
For example, B suddenly changed his mouth and said, "I don't owe A money!"
At this time, the people will stand up and say, "No, my small book records that you borrowed A100 dollars a day!".
(2) How to realize the circulation of transactions - the currency in which the transaction is created
In the above model, the so-called "100 dollars" is no longer important. In other words, anything can be exchanged in this model. Even you can make a thing out of thin air, as long as everyone admits, you can let things you make things flow.
For example: Naruto shouted in the crowd, "I created 10 chakras!", I don't even need to know what Chakra is, nor do I need to care if there is a chakra in the world, as long as everyone hears it, Then write down on his own small book, "Naruto has 10 chakras," so Naruto really has 10 chakras.
From then on, Naruto can claim to have given someone a chakra. As long as the passerby receives and acknowledges this information, Naruto will complete the transaction even if there is no chakra in the world.
Do you have three words in your mind now - "Bitcoin"? That's right, the "bitcoin" that everyone is most familiar with is the most recognized currency based on the "book" circulation of the blockchain! (The peak period was once worth 130,000 yuan!)
But since the real blockchain and bitcoin are much more complicated and more detailed than the ones we have above, the following is an example of Chakra.
(3) How to ensure that the transaction is effective - mark the circulation of "chakra"
Suppose that after a long period of time, Chakra, created by Air Shadow, has been circulated in this system, and everyone has begun to recognize Chakra. But there are only 10 chakras in this system, so someone has a bad thought. He shouted in the crowd, "I have 10 chakras!" What should I do? Everyone wrote down directly on the books that he had 10 chakras, so that not everyone can fake Chakra?
In order to prevent this from happening, Naruto decided to mark Chakra when creating Chakra! (More precisely, Huo Ying is calling the phrase "I created 10 chakras", such as 001), so that in every transaction, Huo Ying shouted "I gave it." When there is a chakra!", an extra sentence is attached: "The source of this chakra is the record recorded as 001, and my sentence is marked 002!".
Let's abstract again - the format of the content of someone's shouting becomes: "The number of this sentence is xxx, the number of the previous sentence is yyy, I gave a certain chakra!" The problem of forgery. In fact, the above model becomes a simplified version of the first version of the Bitcoin blockchain protocol:
Seeing this, you should understand what the “blockchain” technology is. How does the blockchain account help to achieve “decentralized trading”?
Let's review it!
The blockchain network broadcasts the books of all transactions across the financial network in real time, distributing transaction records to each client in real time, while ensuring that everyone can only modify their own property.
Through this technology, people can achieve peer-to-peer direct interaction, only "buy" and "sell", the entire network of people testify for your transaction, to ensure that the transaction is accurate and effective.
On the basis of the blockchain, a lot of currency is born. Among them, the most well-known is the "bitcoin"!