what is blockchain
If you want to talk about blockchain, then you have to mention Bitcoin here. It is a decentralized cryptocurrency in the form of Peer to Peer (P2P). Point-to-point transmission means a decentralized payment. system. The concept of Bitcoin was first 中本聪proposed on October 31, 2008. On January 3, 2009, Satoshi Nakamoto dug out the world's first batch of Bitcoin (also known as Bitcoin) with a personal computer, thus officially 创世区块declaring was 比特币born.
Due to the outbreak of the financial crisis in 2008, Satoshi Nakamoto, the father of Bitcoin, wanted to build an electronic currency that was not controlled by a centralized organization. When he conceived the bottom layer, he decided to abandon the centralized data storage and designed the bottom layer mechanism 强去中心化. And this mechanism allows everyone to participate and is equal to each other, without any centralized team or agency intervention, and once the data is recorded, there is no way to tamper with it.
As time continues to move forward, people gradually find that 比特币the advantages of the underlying mechanism are becoming more and more obvious. In other words, even if the founder is gone, it will continue to operate. Since this mechanism has so many advantages, why not What about extracting it from 比特币the bottom?
So, 区块链was it created by Satoshi Nakamoto? Actually not, he is just carrying forward the foundation of his predecessors, it can be said that he is standing on the shoulders of giants, so he has no worries about food and clothing! (Of course, talent is very important, otherwise I wouldn't post here).
区块链The summary of the premise is almost the same, and you must finally know how it came here ! If you are still confused, or in other words, you still have a clue, but you will be even more confused after reading the above words. It's okay, since the above text didn't make you understand, then ignore the above paragraph and go directly to understand what exactly is it 区块链?
In layman's terms, 区块链it is essentially a decentralized data warehouse, that is, everyone keeps this ledger, which can be considered as a set of encrypted distributed super ledgers.
Bitcoin is the first and most successful application based on blockchain technology.
And 区块链the most notable feature is that 去中心化.
Give a few common 中心化examples in life, and you will understand l.
When we usually save money or the unit/company pays wages, all transactions are in the bank, because ordinary people trust it, otherwise they will deposit it in the safe of their own home.
Whether it is work or life, it may be difficult for people nowadays to leave WeChat! Of course, QQ is still a social tool for the younger generation. YYDSIsn’t this kind of Chinese pinyin abbreviation just the way these younger generations communicate? Say yes, what yyds!". Not to mention how they discuss, we use WeChat or QQ ( 等words are used here, no other social software is listed, because these two social applications can be said to be 独霸江湖!) The chat records and other data of social software are stored in 腾讯the server Although, the website 腾讯has always declared to the outside world: "We do not keep data, but if required by law, we will cooperate with the department to retrieve chat records!".
There were skits about the Spring Festival Gala in the past few years 我怎么证明是我(the older generation of artists 黄宏, it seems), if you don’t have the habit of watching the Spring Festival Gala, then it’s a different story. The story tells the story 我该怎么证明是我, and there are 证明我就是我various certificates in a small box at home, but at this time, they find that the key cannot be found, so they have no choice but to find an unlocking company. However, when the staff of the unlocking company saw that it was a small box, they laughed. Said: "This is just a matter of hammering. Isn't it overkill for us to come here?" After all came, the staff simply took out the hammer from the toolbox and hammered it several times. The lock fell off and opened the box. At that moment, the requesting 我证明是我public official was dumbfounded. Finally, the 我怎么证明是我person who was asked said loudly to the public official: "So many certificates can prove that I am me!" ".
Although this is a skit on the Spring Festival Gala, it is exactly the absurd things that happen in life. Don’t you know 艺术源于生活，而高于生活that the skit just makes the incident more vivid and appealing.
If you can 区块链judge the authenticity based on the generated records, you don’t need to worry about some dereliction of duty or deliberately making things difficult for public officials to ask you for something 你怎么证明是你, 毕业证明and so on.
And 区块链this 去中心化underlying technology breaks the centralization of data controlled by a very small number of Internet giants/institutions.
" Blocking " means that data and state are stored in sequential batches or "blocks".
"**Chain"** refers to each block cryptographically referencing its parent block. In other words, blocks are chained together. The data in a block cannot be changed without changing all subsequent blocks, but changing subsequent blocks requires the consensus of the entire network.
Every computer in the network must agree on every new block and chain. These computers are called "nodes". Nodes guarantee that everyone who interacts with the blockchain has the same data. To complete this distributed agreement, the blockchain needs a consensus mechanism.
