区块链技术是一种去中心化的分布式数据库技术，其本质是一种基于密码学原理、点对点网络和共识机制的数据管理方式。区块链可以记录所有参与者的交易，每个交易被记录在一个数据块（Block）中，并且每个数据块都包含了前一个数据块的信息，这样就形成了一个不可篡改的数据链（Chain），也就是所谓的“区块链”。
The main characteristics of blockchain technology are as follows:
Decentralization:Blockchain technology does not require centralized third-party institutions for management and supervision,but is jointly managed and maintained by all participants.
Security:Blockchain technology ensures data security and integrity through cryptographic principles
Transparency:Blockchain technology allows all participants to view and audit data,ensuring its authenticity and openness.
Non tamperability:Once data is recorded on the blockchain,it cannot be changed or deleted,ensuring the non tamperability of the data.
Common distributed storage technologies include IPFS, Swarm, Storj, etc. Among them, IPFS is a peer-to-peer distributed storage and transmission protocol that can store data on nodes around the world, and achieve rapid retrieval and access of data through hash algorithms and content addressing; Swarm is a distributed storage protocol based on Ethereum, which can store data on nodes on the Ethereum network and achieve automatic backup and recovery of data through smart contracts; Storj is a blockchain based distributed storage network that can store data on nodes around the world and ensure data security and confidentiality through encryption technology.
Distributed storage technology refers to the dispersed storage of data on multiple nodes, interconnected through a network, to jointly store and access data, thereby improving the reliability and scalability of data storage. Different from the traditional centralized storage mode, the distributed storage technology adopts a decentralized mode, which can protect the data from any single point of failure and improve the efficiency of data access.
The main characteristics of distributed storage technology are as follows:
Reliability: Due to the distribution of data across multiple nodes, even if a node fails, it will not affect the operation of the entire system.
Scalability: Distributed storage systems can add or remove nodes as needed at any time to meet data storage needs of different scales.
Efficiency: Distributed storage systems can achieve parallel processing and distributed computing of data, thereby improving the efficiency of data access and processing.
Security: Distributed storage systems adopt technologies such as multi copy storage and data encryption, which can improve the security and confidentiality of data.
