Smart Contract-Based Product Traceability System in the Supply Chain Scenario

Abstract

With the improvement of living standard, people begin to pay more attention to food safety and product quality. Therefore, for consumers, it is necessary to establish a reliable system that can trace the source of products. However, most existing traceability systems tend to lack transparency, data is primarily stored within the enterprise, and the cost of tampering with data is very low. Besides, the supply chain nodes are easy to evade responsibility when product safety or quality issues arise under the traditional centralized management model, and it is difficult to trace the root of issues. The development of blockchain technology provides us with new ideas for realizing the traceability of products in supply chain scenarios. Due to its characteristics of decentralization, transparency, and immutability, blockchain can be effectively used to alleviate the above problems. In this paper, we propose a product traceability system based on blockchain technology, in which all product transferring histories are perpetually recorded in a distributed ledger by using smart contracts and a chain is formed that can trace back to the source of the products. In particular, we design an event response mechanism to verify the identities of both parties of the transaction, so that the validity of the transaction can be guaranteed. And all events are permanently stored in the form of logs as a basis for handling disputes and tracking responsible entities. Furthermore, a system prototype is constructed based on the testing framework of Truffle. The contract code is deployed on a test network TestRpc that runs in local memory, and a decentralized web page interface is implemented based on the prototype. Finally, the system security analysis and experimental results show that our solution is feasible.

Blockchain Technology in Current Agricultural Systems: From Techniques to Applications

“…The access control can only be added via the smart contract that is limited. Many proof-of-concept agricultural traceability systems, such as [49], [51], [62], [63], finance trading systems, such as [23], [64], and some information management systems, including [68], [69], are deployed on top of the platform. However, there are some disadvantages of using the Ethereum platform for development: as shown in Table 2, the platform uses PoW as its consensus scheme, thus the on-chain speed is relatively low, i.e.…”

“…• Hyperledger is endorsed by Linux foundation to provide several distributed ledger frameworks, e.g., Fabric, Sawtooth, Indy, and Burrow [77], for the enterprise level blockchain development. In these frameworks, Hyperledger Fabric [25] and Hyperledger Sawtooth [78] are the two most popular platforms for the development of [51] Combine blockchain with EPCIS standard Traceability Ethereum for reliable traceability system Product transaction traceability [62] Implement product traceability system with evaluations Traceability Ethereum of deployment costs and security analysis OriginChain [63] Blockchain to trace the origin of products Traceability Ethereum RFID traceability [49] Use RFID tags to trace cold chain food in the entire supply chain Traceability Ethereum…”

Enhancing Vendor Managed Inventory Supply Chain Operations Using Blockchain Smart Contracts

“…It also has the potential to enhance the information flow between supply chain partners [20]. Thereby, promoting data visibility and product traceability as the sale and inventory levels of the buyer are made transparent to all stakeholders in a private, permissioned network [21]. Consequently, making this information available to vendors on time allows inventory to accurately reflect product demand by monitoring the stock level frequently.…”

IoT–smart contracts in data trusted exchange supplied chain based on block chain

“…The essential fields in Block chain appropriation nowdays is the Logistics and the supplied chain industry [5,7,18]. Different enormous are looking into the implementation of blockchain [2,3] for the easy communication process of delivers and makes the supply chain [10] traceable and efficient.…”

“…Blockchain [2][3][4][5] basically a distributed, digital ledger [6] has numerous applications and can be used for any data exchange, agreements/contracts, tracking and of course, payment [6,7]. Since every bit of transaction is recorded on a block and across number times another copies of the ledger that are made distribution over many nodes (computers), it is highly transparent.…”