Block chain-based jewelry personalized customization standardized tracing method

Abstract

The invention belongs to the technical field of supply chain tracing, and relates to a jewelry personalized customization standardized tracing method based on a block chain, and the method comprises the following steps: decomposing a jewelry customization process into preset links; constructing a structured data packet and generating a unique content identification code CID; generating an associated record packet; the association record packet and the collaborative time service timestamp are combined to jointly record an alliance chain node, and a participating node carries out digital signature on the recorded content; creating a digital certificate NFT based on the complete CID chain stored by the block chain; and the block chain address and the product laser coding write-in readable and writable chip, the chip data, the CID chain in the digital certificate and the block chain evidence storage record form a mutual verification relationship. The problem that cross-mechanism responsibility tracing cannot be achieved in a traditional scheme is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of supply chain traceability and relates to a standardized traceability method for personalized customization of jewelry based on blockchain. Background Art

[0002] The high-end jewelry market has long faced the industry pain point of difficult identification of product authenticity. Due to the high value and easy-to-counterfeit characteristics of jewelry products, lawbreakers often produce twin counterfeits by forging appraisal certificates, copying physical markings, etc. Consumers lack professional identification capabilities and it is difficult to verify the true origin of products only by visual inspection or traditional paper certificates, resulting in a continuous decline in market trust and seriously restricting the healthy development of the industry.

[0003] Traditional solutions mainly rely on physical anti-counterfeiting markings and centralized databases. Common means include engraving laser codes on jewelry entities, attaching anti-counterfeiting labels, and entering product information into enterprise private databases. Some enterprises have tried to introduce two-dimensional code technology, and by scanning, it jumps to a web page to display limited production link information. These methods attempt to establish a weak association between physical carriers and digital information, but fail to cover the full-process data from raw material procurement to terminal sales.

[0004] Based on the above problems, traditional solutions cannot achieve cross-institutional responsibility traceability. In case of quality disputes, the processing party, the inspection institution, and the sales party shirk responsibility from each other, ultimately damaging the rights and interests of consumers and the brand's credibility. Summary of the Invention

[0005] To solve the above problems, the present invention provides a standardized traceability method for personalized customization of jewelry based on blockchain.

[0006] The standardized traceability method for personalized customization of jewelry based on blockchain includes the following steps: S1. Decompose the jewelry customization process into preset links, and divide the jewelry customization process into a design draft confirmation link, a raw material procurement link, a processing record link, and a quality inspection and packaging link; S2. For the operation content of each link, collect its corresponding electronic voucher data, construct a structured data packet and generate a unique content identification code CID; S3. Associate and bind the unique content identification code CID of the current link with the unique content identification code CID of the previous link to generate an association record packet; S4. Combine the association record packet with the collaborative time-stamp and record them on the consortium chain nodes, and the participating nodes digitally sign the recorded content; S5. Create a digital voucher NFT based on the complete CID chain stored in the blockchain. The digital voucher NFT includes a product laser code, a CID sequence list, and a hash value of the deposit block; S6. The jewelry entity is embedded with a readable and writable chip, and the blockchain address and the product laser code are written into the readable and writable chip, so that a mutual verification relationship is formed among the chip data, the CID chain in the digital certificate, and the blockchain deposit record.

[0007] In a further solution of the present invention, the jewelry customization process is decomposed into preset links, including the following steps: The background of the jewelry customization business system is pre-configured with a standardized process template, and the standardized process template compulsorily requires that the complete customization process be divided into a design draft confirmation link, a raw material procurement link, a processing record link, and a quality inspection and packaging link; The completion status of each link is used as a necessary condition for starting the next link, forming an irreversible business process control chain.

[0008] In a further solution of the present invention, forming an irreversible business process control chain includes the following steps: When a consumer submits a customization requirement, a corresponding order is automatically created and the design draft confirmation link is activated; After the customer signs the final design draft document online, the raw material procurement link is triggered to generate a procurement task order; After the processing factory completes production, it uploads the process video to the processing record link; Finally, the quality inspection agency uploads the packaging photo and the certificate scan in the quality inspection and packaging link.

[0009] In a further solution of the present invention, constructing a structured data packet and generating a unique content identification code CID includes the following steps: In response to the completion of the link status change, collect the electronic voucher data corresponding to the link type; The electronic voucher data is sorted into a structured data packet in a preset JSON format, and the structured data packet is stipulated to include a link type mark, a voucher file hash value, and an operation timestamp; Use the SHA-256 algorithm to perform a one-way hash operation on the data packet to generate a unique content identification code CID with a fixed length.

[0010] In a further solution of the present invention, collecting the electronic voucher data corresponding to the link type includes the following steps: For the design draft confirmation link, collect the final 3D model file with the consumer's biometric signature and its signature timestamp; For the raw material procurement link, collect the electronic version of the original stone appraisal certificate provided by the supplier and the procurement order number; For the processing record link, collect the key process video file and its associated equipment number; For the quality inspection and packaging link, collect the finished product inspection report with anti-counterfeiting watermark and the packaging image.

[0011] A further solution of the present invention is to generate an associated record package, including the following steps: If the current link is the design draft confirmation link, since it is the starting link, an independent header identification code is generated; If it is the raw material procurement link and subsequent links, the currently generated content identification code is pointer-associated and bound with the retrieved content identification code of the previous link to generate an associated record package containing the current identification code, the previous link identification code, and the associated timestamp.

[0012] A further solution of the present invention is to jointly record consortium chain nodes, including the following steps: After generating the associated record package, immediately combine it with the unique content identification code of the current link to form a blockchain deposit request package; Execute consensus rule verification on the deposit request package through the consortium chain node verification network. After confirmation, extract the continuous chain information in the associated record package, superimpose the collaborative timing timestamp, and generate a combined data block containing chain data and time; The verified node uses the asymmetric encryption private key to digitally sign the combined data block and writes the signed data block into the new blockchain block.

[0013] A further solution of the present invention is to generate a consortium chain node verification network, including the following steps: Broadcast the blockchain deposit request package to the verification network composed of jewelry enterprise nodes, testing institution nodes, and industry association nodes; the consensus rule verification includes checking the registration status of the unique content identification code of the previous link in the associated record package.

[0014] A further solution of the present invention is to create a digital certificate NFT based on the complete CID chain stored on the blockchain, including the following steps: Retrieve all associated record packages stored on the blockchain for the customized order and reorganize the complete historical record of the CID chain in the order of links; Verify the integrity and link order consistency of the CID chain historical record through a smart contract; The reorganized CID chain is used as the core metadata to generate a non-fungible digital certificate NFT with a unique identifier. The metadata structure of the digital certificate NFT compulsorily includes field one as the laser code corresponding to the product entity, field two as a list of sequential identification codes from the design draft confirmation link to the quality inspection and packaging link, and field three as the hash value of the final blockchain deposit block.

[0015] A further solution of the present invention is to embed a readable and writable chip in the jewelry entity and write the blockchain address and product laser code into the readable and writable chip, so that the chip data, the CID chain in the digital certificate, and the blockchain deposit record form a mutual verification relationship, including the following steps: When the jewelry is physically packaged during the quality inspection and packaging phase, a readable and writable chip is embedded inside the product; The blockchain address in the digital certificate is combined with the product laser code to write a structured data packet; The NFC device burns the structured data packet into the chip's storage area, then activates the chip's physical anti-tampering sensor. The chip is sealed in an anti-tampering package, and physical damage will cause the storage area to self-destruct. In response to terminal scanning operations, the chip data, digital certificate metadata and blockchain evidence records are read synchronously; Verification can only be passed if the following three conditions are met: Condition 1: the laser code read by the chip completely matches the code recorded in the digital certificate; Condition 2: the CID chain sequence in the digital certificate is consistent with the sequence of blockchain evidence storage links; Condition 3: the content of each identification code in the chain is completely consistent with the content of the associated record package stored in the blockchain.

[0016] In summary, the present invention has the following beneficial technical effects: 1. By enforcing the sequential rules of each link and cascading the content identifier, data tampering is effectively prevented. Modification of the electronic certificate at any link will result in a change in the content identifier, thereby disrupting the continuity of the cross-link chain. This self-verification mechanism, combined with the time-anchoring properties of blockchain evidence storage, forms a full-process anti-counterfeiting barrier from business operations to data storage, significantly improving the technical reliability of jewelry authenticity verification. 2. Utilizing a three-source mutual verification architecture of a readable and writable chip and digital certificate, a closed-loop verification loop is established between physical products and blockchain data. Verification requires that the laser code on the physical carrier, the identifier list on the digital certificate, and the blockchain's evidence record are completely consistent. This not only addresses the vulnerability of physical identification in traditional traceability to cloning, but also establishes a cross-dimensional anti-counterfeiting system through the synergy of the chip's self-destruct mechanism and cryptographic verification. 3. Consumers trigger an automated verification process with a single scan using a near-field communication terminal. The system simultaneously verifies the physical chip data, digital credential metadata, and blockchain-backed records. Verification results are clearly expressed through mathematical logic, eliminating the need for comprehension of specialized terminology. This streamlined and efficient verification method significantly strengthens market trust in high-end jewelry products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. The drawings are used to provide a further understanding of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1The flowchart of the embodiments of the present application is disclosed.

[0019] Figure 2 The structural schematic diagram of the embodiments of the present application is disclosed. Detailed implementation manners

[0020] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] The following is a detailed and preferred description of the present invention in conjunction with the attached Figure 1 - Figure 2 drawings.

[0022] Referring to the attached Figure 1 drawings, the present invention provides a standardized traceability method for personalized jewelry customization based on blockchain, including the following steps: S1. Decompose the jewelry customization process into preset links, and divide the jewelry customization process into a design draft confirmation link, a raw material procurement link, a processing record link, and a quality inspection and packaging link; S2. For the operation content of each link, collect its corresponding electronic voucher data, construct a structured data packet and generate a unique content identification code CID; S3. Associate and bind the unique content identification code CID of the current link with the unique content identification code CID of the previous link to generate an associated record packet; S4. Combine the associated record packet with the collaborative time-stamp and record them on the consortium blockchain nodes, and the participating nodes digitally sign the recorded content; S5. Create a digital voucher NFT based on the complete CID chain stored on the blockchain. The digital voucher NFT includes a product laser code, a CID sequence list, and a deposit block hash value; S6. Embed a readable and writable chip in the jewelry entity, write the blockchain address and the product laser code into the readable and writable chip, so that the chip data, the CID chain in the digital voucher, and the blockchain deposit record form a mutual verification relationship.

[0023] In one embodiment of the present invention, step S1 includes the following steps: The background of the jewelry customization business system pre-configures a standardized process template, which compulsorily requires dividing the complete customization process into four consecutive stages: the design draft confirmation stage, the raw material procurement stage, the processing record stage, and the quality inspection and packaging stage. When a consumer submits a customization requirement, the system automatically creates a corresponding order instance and activates the design draft confirmation stage; after the customer signs the final design document online, the system triggers the raw material procurement stage to generate a procurement task order; after the processing factory completes production, it uploads a process video to the processing record stage; finally, the quality inspection agency uploads the packaging photo and the scanned copy of the certificate in the quality inspection and packaging stage. The completion status of each stage serves as a necessary condition for starting the next stage, forming an irreversible business flow control chain.

[0024] Among them, the standardized process template refers to the rule library of the link sequence set by the enterprise administrator in the system configuration interface, which compulsorily locks the execution relationship of the four links. The design draft confirmation stage refers to the operation stage where the consumer finally confirms the 3D design model file through an electronic signature tool, and the hash value of the design file and the signature timestamp need to be stored in this stage. The raw material procurement stage is defined as the process node of generating a raw material procurement list according to the design draft and recording the electronic version of the original stone appraisal certificate provided by the supplier. The processing record stage covers the whole process of jewelry entity processing, and it is required to shoot videos of key processes and associate the processing equipment number. The quality inspection and packaging stage requires the certified testing agency to upload the finished product inspection report with anti-counterfeiting watermark and the imaging of the packaging process.

[0025] Exemplarily, the consumer selects a diamond pendant through the enterprise customization platform, and the system automatically creates an order number CT2024 and enters the design draft confirmation stage. The designer uploads the final version of the 3D model file Model_V3.stl. After the consumer uses biometric signature to confirm on the mobile terminal, the system generates a signed record with a timestamp. When the status of the design draft confirmation stage changes to "completed", the system automatically activates the raw material procurement stage and generates a task order including the procurement requirements for a 0.5ct main diamond.

[0026] After the purchaser uploads the GIA certificate number GIA12345 and the supplier's electronic contract, the status of the raw material procurement stage is updated to "completed", and then the processing record stage is triggered. When the CNC machine completes the stone setting process, a 15-second video with the equipment number CNC-08 is shot and associated with this stage. Finally, the quality inspection agency scans the laser code LD888 engraved inside the pendant, uploads the national inspection certificate NJ2024001 and the vacuum packaging video, forming an irreversible business flow control chain.

[0027] In one embodiment of the present invention, step S2 includes the following steps: By designing the operation content of each link in the confirmation process of design drafts, raw material procurement process, processing record process, and quality inspection and packaging process, collecting the corresponding electronic voucher data for each process, and organizing it into a structured data packet in a preset format and generating a unique content identification code.

[0028] Specifically, when the status of any link in step S1 is changed to completed, the corresponding electronic voucher data of this link is automatically captured: for the design draft confirmation process, collect the final 3D model file with the consumer's biometric signature and its signing timestamp; for the raw material procurement process, collect the electronic version of the original stone appraisal certificate provided by the supplier and the purchase order number; for the processing record process, collect the key process video file and its associated equipment number; for the quality inspection and packaging process, collect the finished product inspection report with anti-counterfeiting watermark and the packaging image.

[0029] The electronic voucher data is organized into a structured data packet in a preset JSON format. The structured data packet is stipulated to contain three fields: the link type mark, the hash value of the voucher file, and the operation timestamp. Subsequently, a one-way hash operation is performed on this data packet using the SHA-256 algorithm to generate a unique content identification code CID of a fixed length.

[0030] Among them, the electronic voucher data refers to the digital proof files generated during the operation of each process, and its type is determined by the nature of the process: the design draft confirmation process corresponds to the signed 3D model file and its signing timestamp, the raw material procurement process corresponds to the original stone certificate and the purchase document, the processing record process corresponds to the process video, and the quality inspection and packaging process corresponds to the inspection report and the packaging record.

[0031] The structured data packet refers to a standardized data container constructed through a predefined template. The predefined template stipulates that it contains a text field for marking the current link name as field one, a hash value string obtained by combining and calculating all voucher files as field two, and a timestamp accurate to milliseconds when the operation is completed as field three.

[0032] The unique content identification code forms a complete CID chain with "CID_" as the prefix + a 64-bit hexadecimal string generated by the structured data packet through a cryptographic hash function, and satisfies the following formula:

[0033] Among them, represents the unique content identification code of the i-th link; represents the cryptographic hash function; represents the link type mark (design draft confirmation process, raw material procurement process, processing record process, quality inspection and packaging process); represents the hash value string obtained by combining and calculating all voucher files; represents the timestamp accurate to milliseconds when the operation is completed; Represents a data connection symbol used for string concatenation. The 64-bit hexadecimal string has the property of being irreversible, that is, it is impossible to reverse-infer the content of the original data packet from the unique content identification code. When any tiny change occurs in the structured data packet, the unique content identification code will change significantly.

[0034] Exemplarily, for the case of completing the raw material procurement link of order CT2024, collect the electronic document of the GIA certificate (file name GIA12345.pdf) and the purchase order (number PO_789). Combine the two files and calculate the SHA-256 hash value to obtain the file fingerprint "H1a2b3c4d5e6f...".

[0035] Subsequently, construct a structured data packet: assign the link type flag as "raw material procurement link", fill in the hash value of the voucher file field with "H1a2b3c4d5e6f...", and record the submission time of the purchase order "2024-05-10 14:25:36.789" in the timestamp field. Perform a SHA-256 operation on the entire data packet to generate a unique content identification code "CID_8f7e6d5c4b3a...". If someone tampers with the purchase order number later, the recalculated file hash value will change, resulting in a different unique content identification code finally, thus realizing data anti-tampering verification.

[0036] In one embodiment of the present invention, step S3 includes the following steps: After step S2 generates a unique content identification code for the current link, the jewelry customization business system immediately retrieves the record of the unique content identification code stored in the previous link of the customization order.

[0037] If the current link is the design draft confirmation link, since it is the starting link, an independent header identification code is generated. If it is the raw material procurement link and subsequent links, the system associates and binds the currently generated content identification code with the retrieved content identification code of the previous link to form a two-way verification data chain structure. After the association operation is completed, an association record packet containing the current identification code, the previous link identification code, and the association timestamp is generated.

[0038] Among them, the content identification code of the previous link refers to the identification code corresponding to the link that has a direct sequential relationship with this link. For example, the previous link of the raw material procurement link is the design draft confirmation link, and the previous link of the processing record link is the raw material procurement link.

[0039] The pointer association and binding is a technical means of storing the parent-child relationship of the link CID by using the Merkle Patricia Trie structure and establishing an index link between the current identification code and the previous identification code, so that the two form a corresponding relationship that can be retrieved from each other.

[0040] The associated record package is a digital carrier that records the process of the association operation. It must contain a recognition code generated for the current link in field one, the recognition code of the previous link retrieved in field two, and the system timestamp of the execution of the association operation in field three.

[0041] Exemplarily, in the case of the raw material procurement link of order CT2024, the system has generated a unique content recognition code CID_8f7e6d for the raw material procurement link. When this order enters the processing record link, it first collects the machining video of the CNC machine tool and generates a new recognition code CID_a1b2c3. The system automatically retrieves the recognition code CID_8f7e6d of the raw material procurement link as the recognition code of its previous link, and then performs pointer association binding on CID_a1b2c3 and CID_8f7e6d to generate an associated record package.

[0042] The associated record package is stipulated to contain three fields: the current recognition code field value "CID_a1b2c3"; the previous recognition code field value "CID_8f7e6d"; the association timestamp "2024-05-12 09:30:15.456". If an attempt is made to tamper with the procurement document in the raw material procurement link, it will cause the original recognition code CID_8f7e6d to become invalid, and further cause the pointer in the associated record package to point to an invalid address, breaking the continuity of the chain.

[0043] In one embodiment of the present invention, step S4 includes the following steps: After step S3 generates the associated record package, it immediately forms a blockchain deposit request package together with the unique content recognition code of the current link. The blockchain deposit request package includes the original unique content recognition code of the current link and the associated record package.

[0044] Through a pre-configured consortium chain node interface, the blockchain deposit request package is broadcast to a verification network composed of jewelry enterprise nodes, testing institution nodes, and industry association nodes. Each node verifies the validity of the request package according to the preset consensus rules, including checking the registration status of the unique content recognition code of the previous link in the associated record package. After confirmation, the continuous chain information in the associated record package is extracted, and the collaborative timing timestamp accurate to milliseconds is superimposed to generate a combined data block containing the chain data and the collaborative timing timestamp. Finally, the verified node uses its asymmetric encryption private key to digitally sign the data block and writes the signed data block into the new blockchain block.

[0045] Among them, the consortium chain node refers to the authorized entity server participating in the jewelry traceability system, which at least includes three types of entities: the jewelry enterprise operation server, the national-level testing institution server, and the industry association supervision server. The collaborative timing timestamp is the legal time source data obtained by docking with the National Time Service Center NTP service, with a precision of up to milliseconds.

[0046] The combined data block is the atomic unit of the deposit operation, including Field 1 which is the complete content of the associated record package output in Step S3, and Field 2 which is the collaborative time synchronization timestamp string. The digital signature is a cryptographic credential generated by the verification node through an encryption operation on the combined data block using the private key it holds. Other nodes can verify the authenticity of the signature through the public key of this node.

[0047] Exemplarily, in the case of the processing record link of order CT2024, the system forms a deposit request package by combining the associated record package (including the association relationship between CID_a1b2c3 and CID_8f7e6d) and the current identification code CID_a1b2c3. After broadcasting, three consortium chain nodes (Enterprise Server E1, Testing Institution Server T1, Association Server A1) verify the association validity. Extract the content of the associated record package, and superimpose the precise timestamp "2024-05-12 09:30:15.456.789" provided by the National Time Service Center to generate a combined data block.

[0048] Node E1 uses its private key SK_E1 to encrypt the data block to generate signature Sig_E1, Node T1 generates signature Sig_T1, and Node A1 generates signature Sig_A1. Finally, the data block containing the three groups of signatures is written into a new block of the blockchain. If an enterprise attempts to tamper with the processed video later, since the identification code generated by the new video does not match CID_a1b2c3 in the block, it will cause the blockchain verification to fail.

[0049] In one embodiment of the present invention, Step S5 includes the following steps: After the quality inspection and encapsulation link in Step S1 is completed and its associated record package is written into the blockchain through Step S4, the system automatically triggers the digital certificate creation process. First, retrieve all the associated record packages stored on the blockchain for this customized order, and reorganize the complete CID chain historical record in the link order defined in Step S1. Subsequently, call the consortium chain smart contract interface, verify the integrity and link order consistency of the CID chain historical record through the smart contract. Then, the reorganized CID chain is used as the core metadata to generate a non-fungible digital certificate NFT with a unique identifier. The metadata structure of this digital certificate NFT compulsorily includes Field 1 which is the laser code corresponding to the product entity, Field 2 which is the list of sequential identification codes from the design draft confirmation link to the quality inspection and encapsulation link, and Field 3 which is the hash value of the final deposit block of the blockchain.

[0050] Among them, the complete CID chain historical record refers to the sequence of identification codes arranged in the link execution order, starting from the identification code of the design draft confirmation link, ending at the identification code of the quality inspection and encapsulation link, and connected in sequence by the identification codes of the raw material procurement link and the processing record link in the middle. The non-fungible digital certificate is a digitalized ownership proof created based on the blockchain token standard, and it has the attributes of being indivisible and unique across the network.

[0051] The core metadata is a collection of key information written into the tamper-proof area of the digital certificate, including the laser coding text field of the product entity, the CID sequence list field, and the blockchain deposit hash value field. The sequence identification code list refers to an array of identification codes sorted strictly according to the execution time of each link. The array index position 0 corresponds to the identification code of the design draft confirmation link, position 1 corresponds to the identification code of the raw material procurement link, and so on.

[0052] Exemplarily, in the case of the quality inspection and packaging link of order CT2024, the quality inspection and packaging link generates a unique content identification code CID_z9y8x7, which is associated with the unique content identification code CID_a1b2c3 generated in the processing record link and then deposited in the final deposit block of the blockchain. Retrieving the history of this order includes the unique content identification code CID_d4e5f6 generated in the design draft confirmation link, the unique content identification code CID_8f7e6d generated in the raw material procurement link, the unique content identification code CID_a1b2c3 generated in the processing record link, and the unique content identification code CID_z9y8x7 generated in the quality inspection and packaging link. Reorganize them in the order of the links into the CID sequence list field . Taking the laser coding LD888, the identification code list, and the blockchain final deposit block hash value "0x9a8b7c..." as metadata, generate a non-fungible digital certificate NFT with a unique identifier. The metadata structure of this digital certificate NFT must compulsorily include a field one as the laser coding corresponding to the product entity, a field two as the sequence identification code list from the design draft confirmation link to the quality inspection and packaging link, and a field three as the blockchain final deposit block hash value. This certificate can be parsed to display the verification entrances of the four links.

[0053] In one embodiment of the present invention, step S6 includes the following steps: When the quality inspection and packaging link of step S1 completes the encapsulation of the jewelry entity, synchronously embed a rewritable chip inside the product. Call the blockchain address stored in the digital certificate generated in step S5, and combine it with the product laser coding recorded in step S1 into a structured data packet to be written. The near-field communication device burns this structured data packet into the chip storage area, and then activates the physical anti-disassembly sensor of the chip. The chip is sealed in an anti-disassembly package, and physical damage will cause the storage area to self-destruct. When the consumer uses a terminal device supporting near-field communication to scan the chip, the system automatically performs a three-party verification: First, read the blockchain address stored in the chip to locate the deposit block in step S4. Secondly, retrieve the CID chain historical record in the digital certificate. Finally, compare the consistency of the identification codes of each link in the chain with the blockchain deposit record to form a three-source mutual verification mechanism of the physical carrier, digital certificate, and blockchain. When any verification condition fails, the system returns a specific error code: V1 - physical coding does not match, V2 - link sequence is abnormal, V3 - content has been tampered with.

[0054] Among them, the read-write chip refers to a micro near-field communication electronic tag encapsulated inside the jewelry bracket, and its storage area is divided into a read-only block and an erasable block. The written structured data packet consists of a blockchain address string and a product laser coding text. The blockchain address points to the block position of the final link for depositing evidence of the product in step S4, and the product laser coding must be exactly the same as the coding recorded in the quality inspection and packaging link in step S1.

[0055] The physical anti-disassembly sensor is a micro pressure sensor built into the chip. If a mechanical stress change caused by illegally detaching the jewelry bracket is detected, it will trigger a self-destruction instruction for the storage area. The three-source mutual verification mechanism requires that the following three conditions be met simultaneously to pass the verification: Condition 1 is that the laser coding read by the chip is exactly matched with the coding recorded in the digital certificate; Condition 2 is that the CID chain order in the digital certificate is consistent with the order of the blockchain evidence depositing link; Condition 3 is that the content of each identification code in the chain is exactly the same as the content of the associated record package stored in the blockchain.

[0056] Exemplarily, in the digital certificate case of order CT2024, an NFC chip is embedded inside the pendant bracket, and a written structured data packet composed of the blockchain address "0x9a8b7c..." (corresponding to the final blockchain evidence depositing block) and the laser coding "LD888" is written into the chip. When the consumer uses the mobile phone to approach the pendant and reads the chip data, the following operations will be automatically executed: 1. Obtain the four-link identification codes stored in the final blockchain evidence depositing block through the address "0x9a8b7c..."; 2. Parse the order identification code list ["CID_d4e5f6", "CID_8f7e6d", "CID_a1b2c3", "CID_z9y8x7"] of the quality inspection and packaging link from the digital certificate of the unique identifier NFT; 3. Compare the consistency of the two item by item. If the chip is replaced and a forged coding "LD999" is written, condition 1 will fail during verification; if the order of the identification codes in the digital certificate is tampered with, condition 2 will fail; if the blockchain historical record is modified, condition 3 will fail.

[0057] See Appendix Figure 2 , the present invention also proposes a blockchain-based standardized traceability system for personalized jewelry customization, including the following modules: The link decomposition module is used to divide the jewelry customization process into a design draft confirmation link, a raw material procurement link, a processing record link, and a quality inspection and packaging link; The CID generation module collects the corresponding electronic certificate data for the operation content of each link, constructs a structured data packet, and generates a unique content identification code CID; The associated chain construction module associates and binds the unique content identification code CID of the current link with the unique content identification code CID of the previous link to generate an associated record package; The blockchain evidence storage module associates the record package with the collaborative time synchronization timestamp combination to jointly record the consortium chain nodes, and the participating nodes digitally sign the recorded content; The digital certificate generation module creates a digital certificate NFT based on the complete CID chain stored in the blockchain. The digital certificate NFT includes the product laser code, the CID sequence list, and the evidence storage block hash value; The chip writing and triple-source mutual verification module is used to write the blockchain address and the product laser code into the readable and writable chip, so that the chip data, the CID chain in the digital certificate, and the blockchain evidence storage record form a mutual verification relationship.

[0058] It should be noted that for the formulas mentioned above, through the principle of dimensional consistency and mathematical standardization means (such as normalization processing, dimensionless parameter transformation, or unit system unification), physical quantities with different attributes can be translated into dimensionless standard values or superimposable parameters of the same dimension, so as to eliminate the interference of different dimensions on the operation logic, and make the formulas have mathematical operation rationality and objective law adaptability while retaining the original data distribution characteristics. The above is only an exemplary embodiment of the present invention, and the scope of the present invention cannot be limited thereby.

[0059] Each of the above-mentioned modules can be implemented in whole or in part by software, hardware, and their combination, and supports being embedded in the processor of the computer device in hardware form or being independent of it. At the same time, it also supports being stored in the memory of the computer device in software form, so as to facilitate the processor to call and execute the operations corresponding to each of the above-mentioned modules.

[0060] It should be noted that the human body information (including but not limited to human device information and personal information, etc.) and data (including but not limited to data for analysis, stored data, and displayed data, etc.) involved in the present invention are all information and data that have been authorized by the human body or fully authorized by all parties. The collection, use, and processing of relevant data require relevant legal standards.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A standardized traceability method for personalized customization of jewelry based on blockchain, characterized in that It includes the following steps: S1. The jewelry customization process is decomposed into preset links, and the jewelry customization process is divided into a design draft confirmation link, a raw material procurement link, a processing record link, and a quality inspection and packaging link; S2. For the operation content of each link, collect its corresponding electronic voucher data, construct a structured data packet and generate a unique content identification code CID; S3. The unique content identification code CID of the current link is associated and bound with the unique content identification code CID of the previous link to generate an associated record packet; S4. The associated record packet and the collaborative timing timestamp are combined to record the consortium blockchain node, and the participating nodes digitally sign the recorded content; S5. Create a digital voucher NFT based on the complete CID chain stored on the blockchain. The digital voucher NFT includes a product laser code, a CID sequence list, and a deposit block hash value; S6. An erasable and writable chip is embedded in the jewelry entity, and the blockchain address and the product laser code are written into the erasable and writable chip, so that the chip data, the CID chain in the digital voucher, and the blockchain deposit record form a mutual verification relationship.

2. The standardized traceability method for personalized customization of jewelry based on blockchain according to claim 1, wherein The jewelry customization process is decomposed into preset links, including the following steps: The background of the jewelry customization business system pre-configures a standardized process template, and the standardized process template compulsorily requires that the complete customization process be divided into a design draft confirmation link, a raw material procurement link, a processing record link, and a quality inspection and packaging link; The completion status of each link is used as a necessary condition for starting the next link, forming an irreversible business flow control chain.

3. The standardized traceability method for personalized customization of jewelry based on blockchain according to claim 2, wherein, Forming an irreversible business flow control chain includes the following steps: When a consumer submits a customization requirement, a corresponding order is automatically created and the design draft confirmation link is activated; After the customer signs the final design document online, the raw material procurement link is triggered to generate a procurement task order; After the processing factory completes production, it uploads a process video to the processing record link; Finally, the quality inspection agency uploads the packaging photo and the certificate scan in the quality inspection and packaging link.

4. The standardized traceability method for personalized customization of jewelry based on blockchain according to claim 1, characterized in that, Constructing a structured data packet and generating a unique content identification code CID includes the following steps: In response to the completion of the link status change, collect the electronic voucher data corresponding to the link type; The electronic voucher data is sorted into a structured data packet in a preset JSON format. The structured data packet is stipulated to include a link type mark, a voucher file hash value, and an operation timestamp; Use the SHA-256 algorithm to perform a one-way hash operation on the data packet to generate a unique content identification code CID with a fixed length.

5. The standardized traceability method for personalized customization of jewelry based on blockchain according to claim 4, characterized in that, Collecting the electronic voucher data corresponding to the link type includes the following steps: For the design draft confirmation link, collect the final 3D model file with the consumer's biometric signature and its signature timestamp; For the raw material procurement link, collect the electronic version of the original stone appraisal certificate provided by the supplier and the procurement order number; For the processing record link, collect the key process video file and its associated equipment number; For the quality inspection and packaging link, collect the finished product inspection report with anti-counterfeiting watermark and the packaging image.

6. The standardized traceability method for personalized customization of jewelry based on blockchain according to claim 1, characterized in that, Generating an associated record packet includes the following steps: If the current link is the design draft confirmation link, since it is the starting link, an independent header identification code is generated; In the case of the raw material procurement link and subsequent links, the currently generated content identification code is pointer-associated and bound to the retrieved content identification code of the previous link, generating an association record package containing the current identification code, the previous link identification code, and the association timestamp.

7. The standardized traceability method for personalized customization of jewelry based on blockchain according to claim 1, wherein Jointly record the consortium chain nodes, including the following steps: After generating the association record package, immediately combine it with the unique content identification code of the current link to form a blockchain deposit request package; Execute the consensus rule verification on the deposit request package through the consortium chain node verification network. After confirmation, extract the continuous chain information in the association record package, superimpose the collaborative time synchronization timestamp, and generate a combined data block containing the chain data and time; The verified node uses the asymmetric encryption private key to digitally sign the combined data block and writes the signed data block into the new blockchain block.

8. The standardized traceability method for personalized customization of jewelry based on blockchain according to claim 7, characterized in that Generate the consortium chain node verification network, including the following steps: Broadcast the blockchain deposit request package to the verification network composed of jewelry enterprise nodes, testing institution nodes, and industry association nodes; the consensus rule verification includes checking the registration status of the unique content identification code of the previous link in the association record package.

9. The standardized traceability method for personalized customization of jewelry based on blockchain according to claim 1, characterized in that, Create a digital certificate NFT based on the complete CID chain stored on the blockchain, including the following steps: Retrieve all the association record packages stored on the blockchain for the customized order and reorganize the complete historical record of the CID chain in the order of links; Verify the integrity and link order consistency of the CID chain historical record through a smart contract; The reorganized CID chain is used as the core metadata to generate a non-fungible digital certificate NFT with a unique identifier. The metadata structure of the digital certificate NFT is forced to include field one as the laser code corresponding to the product entity, field two as a list of sequence identification codes from the design draft confirmation link to the quality inspection and packaging link, and field three as the hash value of the final blockchain deposit block.

10. The standardized traceability method for personalized customization of jewelry based on blockchain according to claim 1, characterized in that, Embed a readable and writable chip in the jewelry entity, and write the blockchain address and product laser code into the readable and writable chip, so that the chip data, the CID chain in the digital certificate, and the blockchain deposit record form a mutual verification relationship, including the following steps: When the quality inspection and packaging link completes the packaging of the jewelry entity, embed the readable and writable chip inside the product; Combine the blockchain address and product laser code in the digital certificate into a structured data packet for writing; The near-field communication device burns the structured data packet into the chip storage area, and then activates the physical anti-disassembly sensor of the chip. The chip is sealed in an anti-disassembly package, and physical damage will cause the storage area to self-destruct; In response to the terminal scanning operation, synchronously read the chip data, digital certificate metadata, and blockchain deposit record; Verification can only pass if the following three conditions are met. Condition one is that the laser code read by the chip exactly matches the record code in the digital certificate. Condition two is that the CID chain order in the digital certificate is consistent with the blockchain deposit link order. Condition three is that the content of each identification code in the chain exactly matches the content of the associated record package stored on the blockchain.

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