Supply chain traceability platform based on blockchain

Abstract

The present invention discloses a supply chain traceability platform based on blockchain, and the operation method of the platform includes the following steps: Step 1: the parts supplier registers identity and provides enterprise information through blockchain; Step 2: the weight of each part and the completeness of supply information are calculated through information binding; Step 3: the qualification is evaluated through the detailed information of the parts provided by the supplier; Step 4: the qualification of the un-chained parts is calculated according to the qualification of the finished products and the parts entering the chain, so as to form a dynamic supply chain traceability, wherein the blockchain identity registration and protection module is used to realize safe and reliable identity registration and information protection of the parts supplier; the part information binding and weight value calculation module is used to establish the association between parts and enterprise information, and ensure the transparency and integrity of the supply chain through weight value negotiation and dynamic integrity index calculation; the present invention has the characteristics of complete supply chain information and greater security and transparency.

Description

Technical Field

[0001] The present invention relates to the field of blockchain technology, and in particular to a supply chain traceability platform based on blockchain. Background Art

[0002] Current supply chain systems face a common problem: the difficulty ensuring the integrity of supply chain information due to the involvement of multiple suppliers. Traditional systems carry the risk of incomplete supply chain information, which can be caused by the size of each supplier, their willingness to disclose information, or differences in their information systems. Especially in large-scale supply chain networks, with numerous suppliers involved, the autonomy and independent operations of each company make it difficult to ensure that every supplier submits complete information. This information gap can negatively impact the monitoring and evaluation of supplier quality and compliance, as well as the stability of the overall supply chain.

[0003] To address this issue, existing technologies attempt to introduce blockchain technology to enhance supply chain transparency and credibility. However, most current blockchain-based supply chain traceability platforms still have limitations, such as difficulties in verifying supplier identity, ensuring the security and integrity of information, and insufficient monitoring of information not yet included in the chain. Therefore, it is imperative to design a blockchain-based supply chain traceability platform that provides complete, secure, and transparent supply chain information. Summary of the Invention

[0004] The purpose of the present invention is to provide a supply chain traceability platform based on blockchain to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solution: a supply chain traceability method based on blockchain is applied to a supply chain traceability platform based on blockchain, specifically comprising the following steps:

[0006] Step 1: The parts supplier registers their identity and provides company information through the blockchain;

[0007] Step 2: Calculate the weight of each part and the completeness of supply information through information binding;

[0008] Step 3: Conduct qualification assessment based on detailed parts information provided by suppliers;

[0009] Step 4: Calculate the qualification of parts not entering the chain based on the qualification of finished products and parts entering the chain, forming a dynamic supply chain traceability.

[0010] According to the above technical solution, the steps for the parts supplier to register their identity and provide enterprise information through blockchain include:

[0011] The platform introduces a digital signature mechanism based on elliptic curve cryptography. During the registration process, each parts supplier will generate a pair of public and private keys on the elliptic curve. The company's unique identifier and other key information will be digitally signed and a digital identity certificate will be issued by a trusted certificate authority. The digital identity certificate will be stored on a decentralized blockchain. Secondly, detailed data structures and fields are defined in the smart contract, including but not limited to company name, registered address, contact information, and business type. Parts suppliers submit this information during the registration process, and the smart contract will verify and record this data on the blockchain. After the registration information is submitted, the system will use the public key generated by the parts supplier to encrypt sensitive information and store the encrypted data on the blockchain. Only the company with the corresponding private key can decrypt its information. Finally, to ensure the integrity of the information, hash chain technology is used. Each time information is updated or submitted to the blockchain, the system will calculate the hash value of the information and store it in the next block, ensuring that any tampering with the information will be immediately detected and the specific modification behavior can be traced back through the immutability of the blockchain.

[0012] According to the above technical solution, the step of calculating the weight of each part and the completeness of supply information by information binding includes:

[0013] By using smart contracts to bind part information, and setting the weight of each part through the weight negotiation platform;

[0014] The transparency and authenticity of supply chain information are ensured through the calculation of dynamic integrity indicators and the application of digital signatures.

[0015] According to the above technical solution, the steps of implementing the binding of part information by using smart contracts and setting the weight value of each part through the weight value negotiation platform include:

[0016] First, the binding of part information is achieved through smart contracts. Smart contracts contain a data structure for storing part information, such as part name, production date, and batch number. Whenever a part supplier produces a new part, the smart contract will be triggered, linking the new part information with the company information and storing the associated information on the blockchain. The immutability of the blockchain ensures the security of the information. Secondly, a decentralized weight negotiation platform is introduced to set the weight value of each part. Supply chain partners will use smart contracts to participate in the negotiation of weight values. The calculation formula of the weight value (W) is as follows: ,in, is the weight coefficient related to the criticality of the part, It is a factor related to the parts. The results of the negotiation will be recorded on the blockchain through smart contracts to ensure the immutability and transparency of the negotiation results.

[0017] According to the above technical solution, the steps of ensuring the transparency and authenticity of supply chain information through the calculation of dynamic integrity indicators and the application of digital signatures include:

[0018] To calculate the completeness of supply information, a dynamic completeness index calculation method is introduced. Assuming that the number of parts in the chain is N, their weight values ​​are , ,..., , then the completeness of supply information CI= The indicator will be calculated and recorded on the blockchain in real time. Supply chain managers can monitor the integrity of the supply chain by viewing blockchain data or special visualization tools. Finally, in order to ensure the credibility of the integrity indicator, digital signature technology is adopted. The calculation result of each integrity indicator will be digitally signed by the parts supplier using its private key, and the signature result will be stored together with the calculation result on the blockchain. This ensures the non-tamperability of the calculation result. Any potential information tampering can be traced and detected on the blockchain. Through smart contracts, weight value negotiation, dynamic integrity indicator calculation and digital signature, the security, transparency and integrity of supply chain information are ensured.

[0019] According to the above technical solution, the step of performing conformity assessment based on the detailed information of parts provided by the supplier includes:

[0020] By introducing a smart contract mechanism, each supplier will use a digital identity certificate for authentication and submit detailed information about the parts through a smart contract. This information will be stored in a structured form on the blockchain. Secondly, in order to calculate the part's qualification, a qualification evaluation algorithm is defined. This algorithm calculates the comprehensive qualification of the part based on various factors, such as production process, material quality, and quality inspection reports. Specifically, the qualification Q can be calculated using the following formula: , It is a factor related to parts, including production process score, material quality score, and the qualification degree Q represents the qualification degree of the parts that have entered the chain. is the weight value associated with these factors. The formula reflects the weighted average of the part's conformity. In addition, the supplier uses its private key to digitally sign the conformity calculation results and appends the signature to the uploaded information to ensure the authenticity and non-tamperability of the calculation results. Finally, to improve the credibility of the data, each information upload is recorded in a different block and consensus is reached through a consensus mechanism to ensure the non-tamperability of the information.

[0021] According to the above technical solution, the steps of calculating the qualification of unentered parts based on the qualification of finished products and incoming parts to form a dynamic supply chain traceability include:

[0022] The qualification of the final product is provided by the terminal manufacturer. is the overall qualification of the parts that have been put into the chain, which is obtained by the weighted average of the qualification of each part that has been put into the chain. The overall qualification of the unchained parts is calculated by the formula = It is concluded that: is the total number of parts, is the number of parts that have been chained, It is the number of parts that have not entered the chain, and the comprehensive qualification of the parts that have not entered the chain is calculated, which ensures that the terminal manufacturers have real-time understanding of the quality of the entire supply chain. The introduction of smart contract technology realizes real-time monitoring and exception handling of supply information. The smart contract will be executed on the blockchain to monitor the qualification information of the entire supply chain. When the qualification is lower than a predetermined threshold, the smart contract will trigger the exception handling mechanism and notify the relevant parties to take necessary corrective measures. This mechanism helps to ensure the stability and reliability of the supply chain. In addition, in order to enhance the transparency of supply information, the immutability and decentralization characteristics of the blockchain will be used to provide a permission control mechanism. Only authorized members can access and modify relevant information to ensure the security and credibility of the data.

[0023] According to the above technical solution, the platform includes:

[0024] Blockchain identity registration and assurance module, used to achieve secure and reliable parts supplier identity registration and information assurance;

[0025] The part information binding and weight value calculation module is used to establish the association between parts and enterprise information. Through weight value negotiation and dynamic integrity index calculation, it ensures the transparency and integrity of supply chain information.

[0026] The supplier parts information and qualification assessment module is used to provide detailed information on parts submitted by suppliers, calculate the qualification of parts, and ensure the immutability of information through blockchain technology to improve the credibility of supply chain data.

[0027] According to the above technical solution, the blockchain identity registration and protection module includes:

[0028] Identity registration and information submission module, used to implement identity registration and information submission of parts suppliers;

[0029] Smart contract verification and information encryption module, used to verify and record information using smart contracts. Information encryption ensures the privacy of sensitive information, and hash chain technology ensures information integrity.

[0030] The secure identity registration mechanism module is used to establish a secure and reliable blockchain identity registration to ensure that information is confidential, complete and cannot be tampered with.

[0031] According to the above technical solution, the part information binding and weight value calculation module includes:

[0032] Parts information binding module, which is used to implement part information binding through smart contracts, ensuring that the association between part information and enterprise information is stored on the blockchain;

[0033] The weight negotiation module is used to introduce a decentralized weight negotiation platform to ensure that the weight negotiation results are recorded on the blockchain;

[0034] The dynamic integrity index calculation module is used to introduce dynamic integrity index calculation to monitor the integrity of the supply chain.

[0035] Compared with the existing technology, the beneficial effects achieved by the present invention are: first, in the present invention, in step one, the parts supplier registers through the blockchain identity, and adopts digital signature and hash chain technology to ensure the confidentiality and integrity of the information; secondly, the weight of each part and the completeness of the supply information are calculated through smart contracts and decentralized negotiation platforms, which ensures the transparency and authenticity of the information; then, the supplier is required to provide parts information, and the qualification assessment is achieved through smart contracts and digital signature technology; finally, in step four, the terminal manufacturer calculates the qualification of the parts that are not included in the chain, and uses smart contracts to achieve real-time monitoring and exception handling. At the same time, with the help of the immutability and authority control of the blockchain, the stability and reliability of the supply chain are ensured. Through these steps, this patent realizes the dynamic monitoring of supply chain information, and improves the integrity and credibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 Flowchart of the blockchain-based supply chain traceability method provided in Example 1 of the present invention;

[0038] Figure 2 A schematic diagram of the module composition of the blockchain-based supply chain traceability platform provided in Example 2 of the present invention. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Example 1: Figure 1 This is a flowchart of a supply chain traceability method based on blockchain provided in Example 1 of the present invention. This embodiment can be applied to the scenario of automobile parts traceability. This method can be executed by the supply chain traceability platform based on blockchain provided in this embodiment. Figure 1 As shown, the method specifically includes the following steps:

[0041] Step 1: The parts supplier registers their identity and provides company information through the blockchain;

[0042] In the embodiment of the present invention, each supplier registers their identity on the platform and provides accurate company information, including but not limited to company name, registered address, and contact information;

[0043] Exemplarily, the platform introduces a digital signature mechanism based on elliptic curve cryptography. During the registration process, each parts supplier generates a pair of public and private keys on the elliptic curve. The company's unique identifier and other key information will be digitally signed, and a digital identity certificate will be issued by a trusted certificate authority. The digital identity certificate will be stored on a decentralized blockchain. Secondly, a detailed data structure and fields are defined in the smart contract, including but not limited to the company name, registered address, contact information, and business type. The parts supplier submits this information during the registration process, and the smart contract verifies and records this data on the blockchain. After the registration information is submitted, the system will use the public key generated by the parts supplier to encrypt the sensitive information and store the encrypted data on the blockchain. Only the company with the corresponding private key can decrypt the information. Finally, to ensure the integrity of the information, hash chain technology is used. Each time the information is updated or submitted to the blockchain, the system will calculate the hash value of the information and store it in the next block. This ensures that any tampering of the information will be immediately detected and the specific modification behavior can be traced back to the specific modification behavior through the immutability of the blockchain. Through this step, secure and reliable blockchain identity registration can be achieved, ensuring the confidentiality, integrity, and immutability of the information.

[0044] Step 2: Calculate the weight of each part and the completeness of supply information through information binding;

[0045] In the embodiment of the present invention, after registration is completed, each parts supplier binds the parts information it produces with the company information, establishes an association, and sets a weight value for each part;

[0046] For example, first, the binding of part information is achieved through smart contracts. The smart contract contains a data structure for storing part information, such as part name, production date, batch number, etc. Whenever the parts supplier produces a new part, the smart contract will be triggered to associate the new part information with the company information and store the associated information on the blockchain. The immutability of the blockchain ensures the security of the information. Secondly, a decentralized weight value negotiation platform is introduced to set the weight value of each part. Supply chain partners will use smart contracts to participate in the negotiation of weight values. The calculation formula of the weight value W is as follows: ,in, is the weight coefficient related to the criticality of the part, Factors related to parts, such as usage and life cycle, will be recorded on the blockchain through smart contracts to ensure the immutability and transparency of the negotiation results.

[0047] For example, to calculate the completeness of supply information, a dynamic completeness index calculation method is introduced. Assuming that the number of parts in the chain is N, their weight values ​​are , ,..., , then the completeness of supply information CI= The indicator will be calculated and recorded on the blockchain in real time. Supply chain managers can monitor the integrity of the supply chain by viewing blockchain data or special visualization tools. Finally, in order to ensure the credibility of the integrity indicator, digital signature technology is adopted. The calculation result of each integrity indicator will be digitally signed by the parts supplier using its private key, and the signature result will be stored together with the calculation result on the blockchain. This ensures the non-tamperability of the calculation result. Any potential information tampering can be traced and detected on the blockchain. Through smart contracts, weight value negotiation, dynamic integrity indicator calculation and digital signature methods, the security, transparency and integrity of supply chain information are ensured.

[0048] Step 3: Conduct qualification assessment based on detailed parts information provided by suppliers;

[0049] In this embodiment of the present invention, each supplier should provide detailed information about the parts on the blockchain, including production date, quality inspection report, etc. The manufacturer calculates the part's qualification based on the provided information and uploads the result to the blockchain. Blockchain technology ensures that the information cannot be tampered with, thereby improving the credibility of the data.

[0050] For example, a smart contract mechanism is introduced. Each supplier will use a digital identity certificate for authentication and submit detailed information about the parts, such as production date and quality inspection report, through the smart contract. This information will be stored in a structured form on the blockchain. Secondly, in order to calculate the qualification of the parts, a qualification evaluation algorithm is defined. This algorithm calculates the comprehensive qualification of the parts based on various factors, such as production process, material quality, quality inspection report, etc. Specifically, the qualification Q can be calculated using the following formula: , It is a factor related to parts, including production process score, material quality score, and the qualification degree Q represents the qualification degree of the parts that have entered the chain. is the weight value associated with these factors. The formula reflects the weighted average of the parts' qualification. In addition, the supplier uses its private key to digitally sign the qualification calculation results and attaches the signature to the uploaded information to ensure the authenticity and non-tamperability of the calculation results. Finally, to improve the credibility of the data, each information upload is recorded in a different block and consensus is reached through a consensus mechanism, thereby ensuring the non-tamperability of the information, enabling supply chain managers to trust and use the information on the blockchain, and ensuring the data credibility of the entire supply chain.

[0051] Step 4: Calculate the qualification of parts not entering the chain based on the qualification of finished products and parts entering the chain, forming a dynamic supply chain traceability.

[0052] In the embodiment of the present invention, the qualification of the parts not yet supplied into the supply chain is calculated based on the qualification of each part and the overall qualification of the finished product, thus forming a dynamic supply chain traceability;

[0053] For example, The qualification of the final product is provided by the terminal manufacturer. is the overall qualification of the parts that have been put into the chain, which is obtained by the weighted average of the qualification of each part that has been put into the chain. The overall qualification of the unchained parts is calculated by the formula = It is concluded that: is the total number of parts, is the number of parts that have been chained, It is the number of parts that have not entered the chain, and the comprehensive qualification of the parts that have not entered the chain is calculated, which ensures that the terminal manufacturers have real-time understanding of the quality of the entire supply chain. The smart contract technology is introduced to realize real-time monitoring and exception handling of supply information. The smart contract will be executed on the blockchain to monitor the qualification information of the entire supply chain. When the qualification is lower than a predetermined threshold, the smart contract will trigger the exception handling mechanism and notify the relevant parties to take necessary corrective measures. This mechanism helps to ensure the stability and reliability of the supply chain. In addition, in order to enhance the transparency of supply information, the immutability and decentralization characteristics of the blockchain will be used to provide a permission control mechanism. Only authorized members can access and modify relevant information to ensure the security and credibility of the data. Through this step, dynamic qualification monitoring of finished products and traceability of supply information are realized, thereby improving the stability and reliability of the supply chain.

[0054] Example 2: Example 2 of the present invention provides a supply chain traceability platform based on blockchain. Figure 2 This is a schematic diagram of the module composition of the blockchain-based supply chain traceability platform provided in Example 2 of the present invention, as shown in FIG. Figure 2 As shown, the platform includes:

[0055] Blockchain identity registration and assurance module, used to achieve secure and reliable parts supplier identity registration and information assurance;

[0056] The part information binding and weight value calculation module is used to establish the association between parts and enterprise information. Through weight value negotiation and dynamic integrity index calculation, it ensures the transparency and integrity of supply chain information.

[0057] The supplier parts information and qualification assessment module provides detailed information on parts submitted by suppliers, calculates the qualification of parts, and uses blockchain technology to ensure the immutability of information, thereby improving the credibility of supply chain data.

[0058] In some embodiments of the present invention, the blockchain identity registration and assurance module includes:

[0059] Identity registration and information submission module, used to implement identity registration and information submission of parts suppliers;

[0060] Smart contract verification and information encryption module, used to verify and record information using smart contracts. Information encryption ensures the privacy of sensitive information, and hash chain technology ensures information integrity.

[0061] Secure identity registration module, used to establish a secure and reliable blockchain identity registration to ensure information confidentiality, integrity and non-tampering;

[0062] In some embodiments of the present invention, the part information binding and weight value calculation module includes:

[0063] Parts information binding module, which is used to implement part information binding through smart contracts, ensuring that the association between part information and enterprise information is stored on the blockchain;

[0064] The weight negotiation module is used to introduce a decentralized weight negotiation platform to ensure that the weight negotiation results are recorded on the blockchain;

[0065] Dynamic integrity index calculation module, used to introduce dynamic integrity index calculation and monitor the integrity of the supply chain;

[0066] In some embodiments of the present invention, the supplier part information and qualification assessment module includes:

[0067] Part details submission module, used by suppliers to submit part details to the blockchain to ensure information transparency;

[0068] The conformity assessment algorithm module is used to define the conformity assessment algorithm and calculate the comprehensive conformity of parts based on multiple factors. Digital signature technology ensures the authenticity and non-tamperability of the calculation results.

[0069] The blockchain technology application module is used to use blockchain technology to ensure the immutability of information and the consistency of the consensus mechanism, thereby improving the credibility of supply chain data.

[0070] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0071] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. The blockchain-based supply chain traceability method is characterized by: The method is applied to a blockchain-based supply chain traceability platform and specifically includes the following steps: Step 1: The parts supplier registers their identity and provides company information through the blockchain; Step 2: Calculate the weight of each part and the completeness of supply information through information binding; Step 3: Conduct qualification assessment based on detailed parts information provided by suppliers; Step 4: Calculate the qualification of unentered parts based on the qualification of finished products and incoming parts, forming a dynamic supply chain traceability; The steps for the parts supplier to register its identity and provide enterprise information through the blockchain include: The platform introduces a digital signature mechanism based on elliptic curve cryptography. During the registration process, each parts supplier will generate a pair of public and private keys on the elliptic curve. The company's unique identifier and other key information will be digitally signed and a digital identity certificate will be issued by a trusted certificate authority. The digital identity certificate will be stored on the decentralized blockchain. Secondly, the smart contract defines detailed data structures and fields, including company name, registered address, contact information, and business type. Parts suppliers submit this information during the registration process. The smart contract will verify and record this data on the blockchain. After the registration information is submitted, the system will use the public key generated by the parts supplier to encrypt sensitive information and store the encrypted data on the blockchain. Only the company with the corresponding private key can decrypt its information. Finally, to ensure the integrity of the information, hash chain technology is used. Each time information is updated or submitted to the blockchain, the system will calculate the hash value of the information and store it in the next block. The step of calculating the weight of each part and the completeness of supply information by information binding includes: By using smart contracts to bind part information, and setting the weight of each part through the weight negotiation platform; Ensure the transparency and authenticity of supply chain information through the calculation of dynamic integrity indicators and the application of digital signatures; The steps of implementing the binding of part information by using a smart contract and setting the weight value of each part through a weight value negotiation platform include: First, the binding of part information is achieved through smart contracts. The smart contract contains a data structure for storing part information, including part name, production date, and batch number. Whenever the parts supplier produces a new part, the smart contract will be triggered, linking the new part information with the company information and storing the associated information on the blockchain. Secondly, a decentralized weight value negotiation platform is introduced to set the weight value of each part. Supply chain partners will use smart contracts to participate in the negotiation of weight values. The calculation formula of the weight value W is as follows: ,in, is the weight coefficient related to the criticality of the part, It is a factor related to the parts. The negotiation results will be recorded on the blockchain through smart contracts to ensure the immutability and transparency of the negotiation results; The steps of ensuring the transparency and authenticity of supply chain information through the calculation of dynamic integrity indicators and the application of digital signatures include: To calculate the completeness of supply information, a dynamic completeness index calculation method is introduced. Assuming that the number of parts in the chain is N, their weight values ​​are , ,..., , then the completeness of supply information CI= This indicator will be calculated in real time and recorded on the blockchain. Supply chain managers can monitor the integrity of the supply chain by viewing blockchain data or specialized visualization tools. Finally, to ensure the credibility of the integrity indicator, digital signature technology is used. The calculation result of each integrity indicator will be digitally signed by the parts supplier using its private key, and the signature result will be stored on the blockchain together with the calculation result. The steps for conducting conformity assessment based on detailed information of parts provided by suppliers include: By introducing a smart contract mechanism, each supplier will use a digital identity certificate for authentication and submit detailed information about the parts through a smart contract. This information will be stored in a structured form on the blockchain. Secondly, in order to calculate the part's qualification, a qualification evaluation algorithm is defined. This algorithm calculates the comprehensive qualification of the part based on various factors, such as production process, material quality, and quality inspection reports. Specifically, the qualification Q can be calculated using the following formula: , It is a factor related to parts, including production process score, material quality score, and the qualification degree Q represents the qualification degree of the parts that have entered the chain. are the weighted values ​​associated with these factors. This formula reflects the weighted average of the part's conformity. Furthermore, the supplier digitally signs the conformity calculation results using their private key and appends the signature to the uploaded information, ensuring the authenticity and immutability of the calculation results. Finally, to enhance data credibility, each uploaded information is recorded in a different block and agreed upon through a consensus mechanism, ensuring the immutability of the information. The steps of calculating the qualification of unentered parts based on the qualification of finished products and incoming parts to form a dynamic supply chain traceability include: The qualification of the final product is provided by the terminal manufacturer. is the overall qualification of the parts that have been put into the chain, which is obtained by the weighted average of the qualification of each part that has been put into the chain. The overall qualification of the unchained parts is calculated by the formula = It is concluded that: is the total number of parts, is the number of parts that have been chained, It is the number of parts that have not been put into the chain, and the comprehensive qualification of the parts that have not been put into the chain is calculated. The smart contract will be executed on the blockchain to monitor the qualification information of the entire supply chain. When the qualification is lower than a certain predetermined threshold, the smart contract will trigger the exception handling mechanism and notify the relevant parties to take necessary corrective measures.

2. A supply chain traceability platform applicable to the blockchain-based supply chain traceability method of claim 1, characterized in that: The platform includes: Blockchain identity registration and assurance module, used to achieve secure and reliable parts supplier identity registration and information assurance; The part information binding and weight value calculation module is used to establish the association between parts and enterprise information. Through weight value negotiation and dynamic integrity index calculation, it ensures the transparency and integrity of supply chain information. The supplier parts information and qualification assessment module provides detailed information on parts submitted by suppliers, calculates the qualification of parts, and uses blockchain technology to ensure the immutability of information, thereby improving the credibility of supply chain data. The blockchain identity registration and protection module includes: Identity registration and information submission module, used to implement identity registration and information submission of parts suppliers; Smart contract verification and information encryption module, used to verify and record information using smart contracts. Information encryption ensures the privacy of sensitive information, and hash chain technology ensures information integrity. Secure identity registration mechanism module, used to establish a secure and reliable blockchain identity registration to ensure information confidentiality, integrity and non-tampering; The part information binding and weight value calculation module includes: Parts information binding module, which is used to implement part information binding through smart contracts, ensuring that the association between part information and enterprise information is stored on the blockchain; The weight negotiation module is used to introduce a decentralized weight negotiation platform to ensure that the weight negotiation results are recorded on the blockchain; The dynamic integrity index calculation module is used to introduce dynamic integrity index calculation to monitor the integrity of the supply chain.

Images