It can be understood with mathematical knowledge (nodes are points, blocks are lines, and blockchains are planes). Nodes are the basic unit for processing information in blockchain application technology. Many nodes will be marked with time after processing information. Stamp, generate data blocks, and connect the blocks in chronological order to form a blockchain. A blockchain is a distributed ledger where each block is a page in the ledger.
Blockchain is a technology that allows different subjects who are unfamiliar to follow the same mathematical encryption and decryption calculations to establish mutual trust and reach consensus. The problem solved by the blockchain is unique. It does not focus on the improvement of productivity as other technologies, but focuses on the optimization of production relations.
Blockchain is a technology based on mathematical algorithms and is an intangible technology. With tamper-proof and traceable technical features, blockchain can play an important role in intellectual property, transactions and patent review.
Blockchain has technical characteristics such as non-tamperable, decentralized, open and transparent .
The principle of the blockchain is to record data one by one "blocks", and then use "chains" to connect the blocks in chronological order. In the middle, cryptography, public data records and distributed computing are integrated, and the design A new type of database management system was developed.
The blockchain database, relying on cryptography and networks, etc., has built-in anti-tampering capabilities.
The two major mechanisms of the blockchain ensure that data is tamper-resistant . One is to introduce localized traceability. If you modify a previous record, you need to modify all subsequent blocks; the other is to introduce network-wide collision detection. If you need to modify a record in a ledger, you also need to Get the consent of other computers on the network.
The blockchain has tamper-resistant capabilities, but this is limited to when the data is on the chain. Before the data is written to the chain, and after the data leaves the blockchain, it may be tampered with. This is unavoidable for the blockchain itself.