Implementation Of The Supply Chain's Trusted Traceability Query On The Blockchain

In recent years,the phenomenon of fake and inferior commodities has appeared frequently,It gives the credibility of source goods in the supply chain to be taken seriously,In particular,the transaction information is asymmetrical in the entire chain,the problem cause the trust problem in the supply chain is more acute.Building a "centralised" management model is the more mature solution that is currently being applied in traditional supply chain management trading mode.But because the "centralised" management model makes individual rights too big,too much decision-making depends on "central management",exist the probability of tampering,the trust problem is not well solved.The emergence of blockchain technology creates a new opportunity for credible traceability in the supply chain.Therefore,the focus of this paper is to consider the problem of the storage and traceability in the current supply chain,puts forward the realization of the reliable traceability in the blockchain.The paper combines the trading environment of the supply chain,analyzes the shortcomings of the way the trading information is traced back to the existing supply chain,The solution is proposed and implemented for the traceability of the trace source in the supply chain.the paper uses the blockchain technique,the trading roles in the supply chain are used as nodes in the network,These nodes work together to maintain transactions across the network,When someone does tampering,The other nodes will be based on their transaction information,to question the tampering.then wouldn't cause the change of information no one knows like the traditional centralized model.The only information received is the transaction information sent by the central database.the paper is based on the technical characteristics of the centralization and tampering of the blockchain Provide the implementation of the solution the trusted traceability problem in the supply chain.The blockchain is divided into three hierarchies,the paper focuses on working with the application layer and network layer,The underlying P2P network,each trading role is registered as a common node in the network,roles are traded within the network,and validation the transactions and block.Each transaction node in the storage layer stores the authenticated block information on the chain.The final application layer provides the interaction interface,querying a proven and unfalsifiable transaction information,to achieve the true credibility of the results.Completely decentralizing the nodes to maintain the whole chain of information,wouldn't need to trust each other to trust the transaction information.