Blockchain is a term in the field of information technology. It is a shared database, the data or information stored in it, with the characteristics of “non forgeable”, “whole process trace”, “traceable”, “open and transparent”, “collective maintenance”, etc. Blockchain technology has laid a solid “trust” foundation, created a reliable “cooperation” mechanism, and has broad application prospects.
Blockchain is a term in the field of information technology. In essence, it is a shared database, the data or information stored in it, with the characteristics of “unforgeability”, “whole process trace”, “traceability”, “openness and transparency”, “collective maintenance”, etc. Based on these characteristics, blockchain technology has laid a solid “trust” foundation, created a reliable “cooperation” mechanism, and has broad application prospects.
区块链起源于比特币，2008 年 11 月 1 日，一位自称中本聪(Satoshi Nakamoto)的人发表了《比特币:一种点对点的电子现金系统》一文，阐述了基于 P2P 网络技术、加密技术、时间戳技术、区块链技术等的电子现金系统的构架理念，这标志着比特币的诞生。两个月后理论步入实践，2009 年 1 月 3 日第一个序号为 0 的创世区块诞生。几天后 2009 年 1 月 9 日出现序号为 1 的区块，并与序号为 0 的创世区块相连接形成了链，标志着区块链的诞生。
Blockchain originated from bitcoin. On November 1, 2008, a person who called himself Satoshi Nakamoto published bitcoin: a point-to-point e-cash system. He elaborated the framework concept of e-cash system based on P2P network technology, encryption technology, timestamp technology, blockchain technology, etc., which marked the birth of bitcoin. Two months later, the theory came into practice. On January 3, 2009, the first Genesis block with serial number 0 was born. A few days later, on January 9, 2009, a block with the serial number of 1 appeared and connected with the genesis block with the serial number of 0 to form a chain, marking the birth of the blockchain.
In recent years, the attitude of bitcoin in the world has been rising and falling, but as one of the underlying technologies of bitcoin, blockchain technology has been paid more and more attention. In the process of bitcoin formation, block is a storage unit, which records all the communication information of each block node in a certain period of time. Each block is linked by random hash (also known as hash algorithm). The latter block contains the hash value of the previous block. With the expansion of information exchange, one block and one block are connected successively, and the result is called blockchain.
From the perspective of science and technology, blockchain involves many scientific and technological issues such as mathematics, cryptography, Internet and computer programming. From the perspective of application, simply speaking, blockchain is a distributed shared ledger and database, which has the characteristics of decentralization, non tampering, whole process trace, traceability, collective maintenance, openness and transparency. These characteristics ensure the “honesty” and “transparency” of the blockchain, and lay the foundation for the creation of trust in the blockchain. The rich application scenarios of blockchain are basically based on the fact that blockchain can solve the problem of information asymmetry and achieve cooperative trust and concerted action among multiple agents.
Blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. Blockchain is an important concept of bitcoin. It is essentially a decentralized database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptography method. Each data block contains a batch of bitcoin network transaction information, which is used to verify the effectiveness (anti-counterfeiting) of its information and generate the next area Block.