# Wire and Cable Quality Traceability System Based on Industrial Internet of Things and Blockchain
## 3 Identity Resolution System and Blockchain Technology Integration Method
### Data Interaction Synchronization for the Integration of Identity Resolution and Blockchain
The cable quality traceability process with the integration of identity resolution and the blockchain is shown in Figure 10.

After analyzing the quality characteristics of the whole industrial chain of cable products and building a complete cable quality and safety credible traceability block data structure, a cable quality and safety credible traceability model is designed, including IIoT identity resolution system nodes and enterprise blockchain nodes. In this model, identity resolution technology and blockchain technology are organically integrated. In data collection, all the basic data of the enterprise stored on the blockchain have the problems of high cost and low efficiency, so through the middleware for the blockchain and IIoT, the internal MES, WMS, ERP, and other systems of the enterprise are set up with blockchain nodes, so as to achieve the purpose of rapid transaction of data information and cost reduction. After the enterprise user successfully applies for identification in the identity

Figure 9: Wire and cable core quality traceability data model. resolution application platform, the key data of the cable product will be uploaded to the chain for certification and the complete transaction hash value will be generated [30,31]. It is aiming at the quality traceability of each enterprise in different links of the whole industrial chain of cable products. It connects the nodes of each enterprise in the whole industrial chain and establishes a cable quality traceability system with the fusion of identity resolution and blockchain [32]. Its model functions include identity registration, identity coding, data uploading and storage, and data query. It can effectively solve the problems of difficult traceability, data inaccessibility, and data inaccuracy that exist in the current traceability system, as well as the information interaction between the blockchain system and the IIoT identity resolution system, and provide a feasible solution for truly realizing the traceability of the whole industrial chain of industrial product quality, and the overall architecture of the product quality traceability model combining the blockchain and identity resolution is shown in Figure 11 below. In the production completion link, synchronize the basic product information and cable logistics identification data, including the roll label and bag label, the correspondence between them into the anti-tampering sub-system, as the subsequent logistics anti-tampering

Figure 10: Flowchart of cable quality traceability for the integration of identity resolution and blockchain. query as well as the identification of the resolution of the basic data. In order to facilitate dealer management in the application system, the dealer information is synchronized before the delivery of the dealer, to facilitate the subsequent binding of the goods information on the delivery order with the dealer. In the testing link, samples are collected and mailed to the National Wire and Cable Quality Supervision and Inspection Center for testing, and test reports are generated, and the test reports are coded the same as the samples sent for testing to ensure the uniqueness of the reports of the samples sent for testing. In the production process of warehousing, links need to synchronize warehousing information to the application system, to ensure that all synchronized product identification information are warehousing operations, according to the delivery order to the corresponding dealers for delivery, but also need to make the corresponding inventory data processing, and ultimately, through the identification of the goods sent to the supplier to determine the binding relationship of the goods sold in the region.