# Research on Flexible Traceability System of _Agaricus bisporus_ Supply Chain
## 3 Traceability Process Analysis of _Agaricus bisporus_ Supply Chain
### Supply Chain Traceability Indicator Screening  
Traceability indicators refer to the relevant information that needs to be recorded and obtained when tracing products. They are divided into two categories: basic traceability content and safety traceability content. Basic traceability content includes the fundamental information of the product, as well as key links such as harvesting, storage, processing, and transportation [18]. Safety traceability content, based on relevant national laws and regulations, records and reflects information regarding product quality and safety. This encompasses inspection reports, production process monitoring records, raw material and auxiliary material inspection reports, production equipment inspection reports, etc.  
Figure 2: Supply chain traceability process of _Agaricus bisporus_.  
This assists in promptly tracing back to the source of contamination and the relevant responsible parties.  
When selecting traceability content, it is essential to comprehensively collect and record relevant information, establish a corresponding information management system, and make selections and assessments based on the product's characteristics and national regulatory requirements. Timely updates and the completeness of the traceability information are also crucial guarantees to ensure the effectiveness and reliability of traceability. By prudently selecting the traceability content, we can ensure the integrity and accuracy of the traceability information, providing effective support and assurance for safeguarding consumer rights and product quality and safety.  
In various stages of the _Agaricus bisporus_ supply chain, blockchain technology has been employed to establish a public chain, an enterprise chain, and a regulatory chain, enabling effective storage and sharing of information. The public chain is tasked with disclosing product information, allowing consumers to gain comprehensive insights into the origin, production process, and quality of the product. This enhances consumer rights protection, satisfaction, and provides a more trustworthy consumption experience. The enterprise chain offers a platform for relevant companies to share information, promoting collaboration and cooperation among enterprises, thus driving the development and innovation of the entire industry. The regulatory chain shoulders the responsibility of monitoring and supervising, storing pertinent qualification information from various links in the supply chain, as well as information that may affect the food safety and quality of _Agaricus bisporus_. This enables regulatory authorities to comprehensively monitor the entire supply chain from cultivation to the consumer end, swiftly addressing and tracing food safety issues, thereby safeguarding consumer rights effectively. The entire system, through the immutability and transparency of blockchain, establishes a reliable foundation of trust, providing robust assurance for the healthy development of the _Agaricus bisporus_ supply chain. Based on the differentiated requirements for traceability subjects, the traceability information of the _Agaricus bisporus_ supply chain is categorized as shown in Table 1.