❶ Who came up with the idea of blockchain
Nakamoto (English: Satoshi Nakamoto), self-proclaimed Japanese-American, Japanese media often translates as Nakamoto Tetsuhi, this person is Bitcoin The creator of the protocol and its related software Bitcoin-Qt, but the real identity is unknown. Satoshi Nakamoto published a paper titled “Bitcoin: A Peer-to-Peer Electronic Cash System” in 2008, describing a system he called “Bitcoin”. “Coin” electronic currency and its algorithm. In 2009, he released the first bitcoin software and officially launched the bitcoin financial system. In 2010, he faded out and handed over the project to other members of the Bitcoin community. Satoshi Nakamoto is believed to hold about one million bitcoins.
❷ What is the concept of blockchain
Literally understood, blockchain includes two concepts: block and chain. The blockchain itself is composed of blocks, and the network constructed by linking different nodes together is the blockchain. The main function of the blockchain is to store information. Any information that needs to be saved can be written into the blockchain or read from it.
Every block stores: some valid record or transaction; information about the block; links to the previous block and the next block through the hash of each block – can be considered a block The unique code of the fingerprint.
Therefore, each block has a specific and immovable position within the chain because each block contains information from the hash of the previous block. The entire chain is stored in each network node that makes up the blockchain, so an exact copy of the chain is stored in all network participants.
In essence, a blockchain can be used to store any type of information that must remain intact and more secure than going through a man-in-the-middle. , decentralized and cheaper ways to stay available. Furthermore, since the stored information is encrypted, its confidentiality is guaranteed as only those who possess the encryption key can access it.
Using blockchain in healthcare. For example, health records can be consolidated and stored on the blockchain. This means that every patient’s medical history is safe and, at the same time, available to every authorized physician, regardless of the health center where the patient is being treated. Even the pharmaceutical industry can use this technology to authenticate medicines and prevent counterfeiting.
Blockchains are also very useful for managing digital assets and documents. The problem with digitization so far is that everything is easy to replicate, but Blockchain allows you to record purchases, deeds, documents or any other type of online asset without it being counterfeited.
❸ What is the origin of the blockchain
The blockchain originated from Bitcoin. On November 1, 2008, a person who claimed to be Satoshi Nakamoto published The article “Bitcoin: A Peer-to-Peer Electronic Cash System” expounds the architectural concept of the electronic cash system based on P2P network technology, encryption technology, timestamp technology, blockchain technology, etc., which marks the birth of Bitcoin.
Two months later, the theory entered into practice, and the first genesis block with serial number 0 was born on January 3, 2009. A few days later, on January 9, 2009, a block with serial number 1 appeared and was connected with the genesis block with serial number 0 to form a chain, marking the birth of the blockchain.
In recent years, the world’s attitude towards Bitcoin has been ups and downs, but as one of the underlying technologies of Bitcoin, blockchain technology has received increasing attention. In the formation process of Bitcoin, the block is a storage unit that records all the communication information of each block node within a certain period of time.
The links between each block are realized by random hashing (also called hash algorithm). The latter block contains the hash value of the previous block. With the expansion of information exchange, a block After successive blocks, the result is called a blockchain.
(3) Who expands the concept of blockchain:
Characteristics of blockchain:
1, Decentralized. Blockchain technology does not rely on additional third-party management agencies or hardware facilities, and there is no central control. Except for the self-contained blockchain itself, through distributed accounting and storage, each node realizes information self-verification, transmission and management. Decentralization is the most prominent and essential feature of blockchain.
2. Openness. The foundation of blockchain technology is open source. In addition to the encrypted private information of transaction parties, blockchain data is open to everyone. Anyone can query blockchain data and develop related applications through public interfaces. System information is highly transparent.
3. Independence. Based on consensus specifications and protocols (similar to various mathematical algorithms such as the hash algorithm adopted by Bitcoin), the entire blockchain system does not rely on other third parties, and all nodes can automatically and securely verify and exchange data within the system without the need for any human intervention.
4. Security. ��If you can’t control 51% of all data nodes, you can’t arbitrarily manipulate and modify network data, which makes the blockchain itself relatively safe and avoids subjective and artificial data changes.
5. Anonymity. Unless required by legal regulations, technically speaking, the identity information of each block node does not need to be disclosed or verified, and information transmission can be carried out anonymously.
❹ What is the concept of blockchain
Blockchain is a digital ledger that can be jointly recorded, which records all transactions that have occurred and have been unanimously recognized by the system. It is equivalent to keeping accounts in the way of family mobilization. You are keeping accounts, and your father and mother are keeping accounts. They can all see the general ledger, but the information that has been saved can no longer be tampered with.
The concept of blockchain was first proposed by Satoshi Nakamoto in 2008. The blockchain then became a core component of the electronic currency Bitcoin, serving as a public ledger of all transactions. By utilizing a peer-to-peer network and distributed timestamp servers, blockchain databases are capable of autonomous management.
(4) Who expands the concept of blockchain:
Types of blockchain
1. Public blockchain
Any individual or group in the world can send a transaction, and the transaction can be effectively confirmed by the blockchain, and anyone can participate in its consensus process. The public blockchain is the earliest blockchain and the most widely used blockchain. The virtual digital currencies of the major bitcoins series are all based on the public blockchain. There is only one blockchain corresponding to this currency in the world. .
2. Consortium (Industry) Blockchain
Consortium Block Chains: Multiple pre-selected nodes are designated by a group as bookkeepers, and each The generation of each block is jointly determined by all pre-selected nodes (pre-selected nodes participate in the consensus process), and other access nodes can participate in transactions, but do not ask about the accounting process (essentially, it is still managed accounting, but becomes distributed accounting, pre-selected The number of nodes, how to determine the bookkeeper of each block becomes the main risk point of the blockchain), and anyone else can make limited queries through the open API of the blockchain.
3. Private blockchain
Only use the general ledger technology of the blockchain for bookkeeping, which can be a company or an individual, and exclusively enjoy the writing of the blockchain Access permissions, this chain is not much different from other distributed storage solutions.
❺ Explain in plain language what is blockchain and what is the concept of blockchain
My personal understanding is that blockchain is a A number of data blocks recorded by the consensus algorithm in the network, in time order, connected one after the other.
To put it in layman’s terms, it’s like stringing beads~