Author: Zen and the Art of Computer Programming
With the development of the digital economy, various industries have begun to accelerate their dependence on informatization. Informatization enables enterprises and individuals to obtain a large amount of supply and demand information at any time, as well as transaction data on the Internet. In this process, the circulation process of the goods is also gradually recorded, forming digital "cargo information". Based on this information, it can be traced back to determine whether there are any violations or potential safety hazards. At present, there are a variety of technologies and methods that can be used to trace the origin of goods in the world, the most famous of which is "value-added tax electronic invoice" (VAT invoice). show. In addition to clearly displaying the name, quantity, and value of the goods in the order, the VAT electronic invoice also provides relevant historical information, which can better track the source of the order, the transit through it, and the final destination. However, this kind of invoice can only trace the purchase and sales of a single commodity, and cannot cover the complete link of the entire agricultural product circulation, especially the production flow process between different links and different departments. As a new application model of distributed ledger technology, blockchain is receiving more and more attention due to its characteristics of distributed, decentralized, and non-tamperable. Blockchain technology realizes data sharing and verification through a unique data structure and consensus mechanism, and has broad application prospects. In the field of artificial intelligence, the fields of deep learning technology, reinforcement learning technology, and genetic algorithm have achieved remarkable and unique success. Blockchain technology can also be applied to the field of agricultural production. Using the characteristics of blockchain smart contracts and consensus mechanisms, the single traceability function of "value-added tax electronic invoices" can be extended to the full range of traceability of the entire agricultural product life cycle.
2. Explanation of basic concepts and terms
Overview of Blockchain Technology
Blockchain is a distributed database management system, which is an open, decentralized and reliable system. Its operation mode is that users interact with network nodes through software clients, and at the same time, all nodes in the network transmit information in a point-to-point manner. Blockchain is an unforgeable record system