Design And Implement Of Traceability Process System For Grassland Livestock Products Based On Blockchain

Food is one of the most important sources of the development of our country and people's livelihood,with the livestock product playing an essential role in it.Animal husbandry is also very significant in the national economy,and it is one of the primary financial support of Inner Mongolia.As a result,the safety of the livestock product becomes a priority among priorities attracting all of the people's attention.It seems to be a bailment of living happy lives and a vital stone of the health development of stock farming.It is made a possible way to ensure the prairie livestock product safe by livestock traceability.When the whole life course which contains the process from birth to being presented on a dining-table comes into customers' eyes as a mode of data,those customers can not only know whether the livestock product is safe or not but also know whether the degree of the livestock product's quality is high or low.The traceability of livestock products can make sure customers' health and promote the development of animal husbandry.Moreover,it can improve the development of other relative industries by bringing its added value to the livestock product itself.Traditional livestock product traceability achieves data interaction through the central node,with livestock traceability's data recorded in the central node.Livestock traceability system's information could not be made sure true,on the one hand,because data can be recorded in traceability system directly in spite of the traceability system which may go wrong and this process won't be perceived,on the other hand,because once the central node is attacked,the data of traceability system may be changed into the false one.To solve the dilemma of traditional livestock product traceability,a new technology named as the livestock traceability technology based on blockchain that integrates blockchain technology and traceability technology rises in response to proper time and conditions.Because of the feature of blockchain technology itself,such as that writing data into blockchain ledger needs so strict consensus process that the information which is not admissive can't have write access to the blockchainsystem,that the data written into the system must be cryptographic,that the data written into blockchain ledger could not be deleted or changed,blockchain technology is terribly suitable to livestock anti-fake traceability whose industrial chain is relatively long.Since 2010,the prairie livestock traceability system based on the Internet of Things in Inner Mongolia has been planned and accomplished step by step.More and more information about prairie livestock such as sheep and cow are recorded into the system,leading to prosperity of livestock traceability in Inner Mongolia.This paper introduces the design and business logic of the prairie livestock traceability system based on the Internet of Things in detail.This paper also set forth the core design of the blockchain system,the design of system's functions of the blockchain system,the mode design of system node's deployment of the blockchain system,the design of blockchain ledger of the blockchain system which consists of distributed ledger,consensus algorithm,the algorithm of cryptography and intelligent contract.Moreover,this paper launches the statement of how to write data into blockchain ledger based on a specific regulation by integrating business logic and blockchain system to avoid false data to be written into blockchain ledger to the most considerable extent.The paper goes into the traceability system for prairie livestock product based on blockchain technology to record a large of data such as the data of feeding and livestock's growing up,the data of epidemic prevention,the data of slaughtering livestock and processing livestock,the data of storage logistics,the data of selling livestock product,the data of buying livestock product and even the data of livestock's pictures into traceability system for livestock product based on blockchain technology so that we can make sure the information of the livestock product reliable,could not be tampered with and could be searched by the third party,for example,the government or other organization.In a word,the traceability system for prairie livestock products based on blockchain technology will take us to a better life where the customers can get a secure livestock product.