The basic composition of blockchain technology:
Distributed data storage, point-to-point data transmission, consensus mechanism, encryption algorithm and other technologies.
How the blockchain is used
Although it is composed of these functions, at the level of use, we will regard it as an open, transparent, non-tamperable, decentralized distributed ledger database.
Commonly used data structures in blockchain:
Chain data structure, a chain consists of many blocks, the first block has a unique ID, and the remaining blocks have two IDs. The IDs of the remaining blocks refer to two hash values, and one ID is The hash value of the previous block, and the other ID is a unique ID value generated by the hash algorithm through the hash value of the previous block and the content of the current block.