How does blockchain explain it in a more visual way?

The current common definition is "encrypted distributed ledger technology". To put it simply, it is a new information recording technology, and it is "encrypted" and "distributed".

In the past, bookkeeping was "centralized". For example, if I deposit 100 yuan in the bank, the data of my deposit is only recorded in the bank's database. Except for the bank, no one else knows. This way of recording information is called "centralized bookkeeping".

Centralized bookkeeping, while efficient, has its problems:1The credibility of a centralized authority. 2.Security of information storage. Based on these problems, someone came up with a new method - distributed ledger.

The "distributed accounting" of the blockchain means that the data is not stored in a center, but stored once on all computers in the network. For example, if I transfer 100 yuan to you, I will shout at all the computers on the network and ask them to help them remember it.

Then you can't deny it. Since the information is distributed and stored on various computers, it is called "distributed accounting". Blockchain was born in this way.

In the blockchain, a block is created for every piece of data entered. The block is divided into two parts: the block header, which records the information of the current block; Block body, record the actual data.

Tampering requires the computing power of more than 51% of the computers on the entire network to be assembled, that is, the "51% computing power attack". It's almost impossible to do.

Today, blockchain concept stocks have soared. What is blockchain in 5 minutes? What does blockchain do?

Jinwowo network analysis: more figuratively, the blockchain is like an electronic linked list, which is composed of blocks one by one, which contain all the valid data, and whenever new data appears, it will be packaged and summarized into a new block according to the consensus rules on the chain, which is connected to the back of the original chain. Finally, in the entire blockchain system, each participant keeps this complete linked list and updates it at all times.

Madame was so uncomfortable when she was troubled. I don't want to upset a merciful master, I have to learn to be restrained. And, there is.

Blockchain is a decentralized distributed ledger databaseThe advantage of this distributed ledger is that buyers and sellers can transact directly without any intermediaries. Everyone has a backup, even if you lose it.

Suppose you have a ledger at home and let you keep the accounts. In the past, it was your mom and dad who gave you your salary and let you put it in the ledger. In the middle, if you are greedy and want to buy something delicious, maybe the record in the ledger will be less than a dozen yuan, and others will not know.

The solution to the problem with blockchain: If you use the whole family to keep accounts, the above problems will not be there, because you are keeping accounts, your father is also keeping accounts, your mother is also keeping accounts, they can see the general ledger, you can't change it, and your parents can't change it, so you can't help your dad who wants to buy cigarettes and smoke and those who want to be greedy.

In layman's terms, blockchain is that everyone maintains a public ledger together, no one keeps a fixed account, and everyone can keep a book.

Hypothetical environment: Suppose you have a ledger at home and let you keep the accounts. In the past, it was your mom and dad who gave you your salary and let you put it in the ledger. In the middle, if you are greedy and want to buy something delicious, maybe the record in the ledger will be less than a dozen yuan.

The solution to the problem with blockchain: If you use the way of the whole family to keep accounts, the above problems will not exist, because you are keeping accounts, your father is also keeping accounts, your mother is also keeping accounts, they can see the general ledger, you can't change it, and your parents can't change it, so you can't help your father who wants to buy cigarettes and smoke and those who want to be greedy.

In 2008, Satoshi Nakamoto first proposed the concept of blockchain, which then became a core component of the electronic currency Bitcoin, serving as a public ledger for all transactions. On January 3, 2009, the first genesis block with the serial number 0 was born. On January 9, 2009, a block with a serial number of 1 appeared, and it was connected with the genesis block with a sequence number of 0 to form a chain, marking the birth of the blockchain.

Blockchain has the characteristics of decentralization, openness, anonymity, etc. Decentralization is the most prominent and essential feature of blockchain; The blockchain technology foundation is open-source, and the information of the entire system is highly transparent; The identity information of each block node does not need to be disclosed or verified, and the information can be transmitted anonymously.

I'm here, blockchain is actually very well understood.

In order to solve this problem, the predecessor of the blockchain, that is, the PPP peer-to-peer transmission protocol, was born, and this system is roughly like this.

This system is the blockchain system.

What is Bitcoin?

Bitcoin is the first application of blockchain (in fact, I personally think that the first application of blockchain is the software of the next short video).

Bitcoin only has 4 bits (32 bytes), so the binary character called Bitcoin represents a string of numbers, which represents the amount encrypted by the hash algorithm, and can be stored and transmitted on the network through the key.

Let's take a chestnut: if A borrows 100 dollars from B, at this time, A shouts in the crowd, "I'm A, I lent B 100 dollars!" B also shouted in the crowd "I'm B, A lent me 100 dollars!" At this time, passers-by A, B, C, and D all heard the news, so everyone silently wrote down in their hearts that "A lent B100 yuan".

At this time, the blockchain, that is, a decentralized system, is established, which does not require banks, lending protocols and receipts, and strictly speaking, does not even require a long-term trust relationship between people (for example, B suddenly changes his words and says "I don't owe A money!"). At this time, some people will stand up and say: "No, my small notebook recorded that you borrowed A100 yuan one day!"

。In layman's terms, in the past, transactions were customer docking platforms (or third-party platforms), while blockchain is to turn each user into a platform, thus breaking the monopoly of third-party platforms (Jiajiali Xiaocai).

What is Blockchain? Let's start with a simple example of a love that everyone loves to talk about.

Establish a simple blockchain model, then the following situations will occur when falling in love in this blockchain model.

In the future, the whole process of the commitment of all men and women of appropriate age to fall in love and get married will be agreed upon by all other men and women of appropriate age, and all the stories that happen between two people together will form blocks.

All other men and women are chains, and if a third party intervenes or violates the other half, everyone else can see it, and they will never find a partner again.

To be precise, blockchain is a "full center" system, that is, every node on the chain is the center.

The application of blockchain is the application of blockchain for men and women who try to get married, post their circle of friends, show affection, promise to love each other for a lifetime and be known to all other marriageable men and women. If one day one party breaks its promise, don't think that it is useful to delete **, because all marriageable men and women are recorded.

It can't be deleted, it can't be changed, that's blockchain technology.

For example, if you are a woman, every time your boyfriend says something to you or promises to buy you something, you immediately record it and send it to all your girlfriends, classmates, colleagues, and various groups and friends, so that he can no longer deny it, which is called blockchain.

From an academic point of view, blockchain is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Blockchain is essentially a decentralized database.

The core advantage of blockchain technology is decentralization, which can realize peer-to-peer transactions, coordination and collaboration based on decentralized credit in a distributed system where nodes do not need to trust each other through the use of data encryption, timestamping, distributed consensus and economic incentives, thus providing a solution to the problems of high cost, low efficiency and insecure data storage that are common in centralized institutions.

The application fields of blockchain include digital currency, tokens, finance, anti-counterfeiting traceability, privacy protection, ** chain, entertainment, etc., the popularity of blockchain and bitcoin, many related top domain names have been registered, which has had a relatively large impact on the domain name industry.

In simple terms, blockchain is a distributed ledger database. The advantage of this distributed ledger is that everyone has a backup, even if you lose it.

A friend told a popular example, Xiao Zhang in the village borrowed 1,000 yuan from you, but suddenly one day Xiao Li said that he had not borrowed money from you, and you couldn't find an IOU, so the matter was not clear. And the next time Xiao Li asks you to borrow money, you will learn the lesson of the last time and find 5 villagers in the village to keep accounts, so that a distributed ledger is formed, even if your ledger is lost, or someone tamperes with the ledger, there are other people's backups. In this way, the problem of ledger loss is solved.

When it comes to blockchain, we can't talk about Bitcoin, which is a digital currency, and blockchain is the underlying technology of Bitcoin, which is equivalent to the first application of blockchain technology. When Bitcoin was created, the term "blockchain" didn't even exist.

Now that Bitcoin has risen sharply and the system has been running smoothly for many years, it feels much more secure than **, and you can try to test it on the OKEx platform, which has a large reputation and influence and relatively high security

Blockchain is a product of the Internet of Things stage and the embodiment of "value sharing of things". Blockchain technology is commonly referred to:

The front, back, left and right blocks of "things" are connected into a chain with a technology, but the original data of each block cannot be tampered with, which is a technology of "chain of various modules" in the scope of the Internet of Things that can be trusted by participants.

The application of blockchain technology is inseparable from the Internet and the Internet of Things, which is based on the integration and interaction of the two, but allows the participants to remain independent (decentralized) and jointly own this set of value chain (co-construction and sharing). I wish you all good luck and people's livelihood every day!!

Generally speaking, blockchain is a high-level archive, which is different from traditional archives in that it used to store archives, but now it can not only store, but also calculate, and analyze and guide its results.

Blockchain is essentially a decentralized database, the content of the database cannot be modified after it is on the chain, and all information can be traced. You can also understand it colloquially as a family-owned ledger, and once there is an update on it, the whole family can see it. The blockchain traceability function is also generally used for the tracking of goods and items.

Mimacaijing focuses on blockchain information.