Research On The System Platform Of Grass And Animal Husbandry Chain Based On Smart Contract

Since the beginning of the new century,the living standards of the Chinese people have been greatly improved,the proportion of animal foods such as eggs,milk and meat in the diet structure has increased rapidly,resulting in the proportion of food consumed by feeding livestock in China’s total grain output has also increased year by year,and the phenomenon of "people and animals competing for food" has gradually threatened China’s food security.Looking at the whole chain of artificial forage promotion,solving the financing problem in the process of artificial forage planting will be the core of rapidly increasing the planting area of artificial grassland.From the perspective of integrating the entire grass husbandry industry chain and realizing the optimal allocation of resources,this study starts from expanding the actual business of artificial forage planting,turns the idle land in the countryside into a planting base in the form of gathering less into more,and then attracts a group of people with lofty ideals who are committed to rural revitalization in the form of agricultural crowdfunding,and uses the idle funds in their hands to plant grass on a large scale on the formed planting base by way of investment subscription,so as to solve the problem of financing difficulties in the process of forage planting,so as to expand the planting area of artificial grassland.At the same time,the introduction of animal husbandry and the transformation of the breeding farm into the breeding base not only solves the problem of the sales of pasture in the planting base,but also solves the problem of purchasing high-quality grass feed from the breeding farm,and at the same time turns the livestock of the breeding base into a target that can be invested in through the platform,and sells it in the form of pre-sale,which solves the problem of product sales of the feedlot.In order to achieve the above goals,this study designs a grass husbandry system platform based on We Chat mini program and blockchain on the back-end three-layer distributed deployment on the basis of analyzing existing computer technology,introduces blockchain NFT technology,and issues non-monetized NFTs corresponding to physical objects according to the location,latitude and longitude of the planting base and the ear tags of livestock according to the location of the plot,latitude and longitude and the ear tags of livestock,according to the Ethereum ERC-721 standard;Platform users invest in the NFT by calling smart contracts deployed on the blockchain on the mobile terminal,and the user’s investment funds are locked with the corresponding grass or livestock through the NFT;Next,the person in charge of the plot will record the actual operation in the breeding process and store it into the NFT;After the pasture or livestock matures,the yield or inventory corresponding to the NFT is formed through the harvesting or slaughter smart contract;The platform sells the products corresponding to the NFT through the sales smart contract,forming a breeding profit and automatically flowing to the accounts of the parties to the contract,and the NFT is destroyed after the sale is completed.The whole process revolves around the ID of the NFT to carry out data operations,so as to ensure the distributed storage and immutability of the entire process of the digital asset from issuance to destruction,ensure the security of the transaction,and conduct multiple rounds of NFT issuance based on the actual breeding season,making the system platform more operable and realistic.Through actual promotion and use,the company + township + village cooperative farming cycle town model is gradually formed,helping the rural revitalization of the Central Plains.