A blockchain-based design work copyright management system and method
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGHUA UNIV
- Filing Date
- 2023-02-03
- Publication Date
- 2026-06-26
Smart Images
Figure CN116308901B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of digital rights management, and in particular to a blockchain-based copyright management system and method for design works. Background Technology
[0002] Design works play a crucial guiding role in production, manufacturing, and engineering construction, possessing significant commercial value. Therefore, they require copyright protection, and the processes of trading and transferring copyrights must be standardized to safeguard the interests of all parties. However, unlike general digital content, design works are highly susceptible to trends and struggle to adapt to the lengthy patent application process. While design works demand copyright protection and trading, existing copyright management methods fail to adequately address the displayability of design works, the confidentiality of design details, and the validity of copyright registration, thus failing to effectively link protection and trading. Furthermore, as a special type of asset, the ownership of design works is often unique, making it challenging to ensure fairness in transactions while protecting content. All these factors contribute to the difficulties in managing the copyright of design works.
[0003] Most existing digital rights management (DRM) methods require copyright owners to upload all details of the copyrighted content to service providers for copyright registration. However, due to the high degree of centralization of service providers, this practice sometimes fails to ensure the credibility of copyright registration. Completely entrusting design works to service providers also carries the risk of content theft, failing to provide designers with a sense of security.
[0004] In the art transaction process, most existing DRM methods adopt a prepayment approach, providing digital content and licensing rights only after payment. This approach can easily harm the buyer's interests. For example, the purchased design content may have quality issues.
[0005] With increasing public awareness of copyright protection, existing DRM methods for managing the copyright of design works are out of touch with real-world scenarios, necessitating the introduction of new technologies to address this issue. As the first link in the manufacturing industry chain, a technological solution to the copyright management problem of design works will also benefit the healthy development of e-commerce within the industry chain. Summary of the Invention
[0006] The purpose of this invention is to overcome the shortcomings of the existing technology by providing a blockchain-based copyright management system and method for design works. This invention uses blockchain to register, verify, and trace copyright information for design works, thereby achieving copyright protection and generating digital identities for design works; it uses smart contracts for online transactions and copyright transfers of design works, ensuring automatic planning and human intervention in the transaction process; and it uses a smart contract-based delivery verification mechanism to ensure the fairness of the transaction process.
[0007] The objective of this invention can be achieved through the following technical solutions:
[0008] A blockchain-based copyright management system for design works includes CA nodes, consensus nodes, public query nodes, copyright storage chain, verification module, transaction storage chain, and work transaction contract;
[0009] The CA node provides user registration services and authentication for the copyright and transaction authentication chains and verification modules. For each user who passes real-name authentication, the CA node generates a unique private / public key pair using asymmetric encryption technology for authentication. The generated private key is held solely by the user, and the CA node maintains a list of all users' public keys.
[0010] The consensus nodes are used to maintain the blockchain data of the copyright and transaction evidence storage chains through consensus algorithms, ensuring the immutability of the data; thereby achieving network-wide notarization of on-chain records. The consensus nodes also serve as the pathway and service provider for recording copyright information on the blockchain.
[0011] The public query nodes obtain blockchain data from the copyright certificate storage chain and the transaction certificate storage chain from different consensus nodes and provide them to the public for querying.
[0012] The copyright preservation chain is used to store the copyright information and related cryptographic features of design works; with the help of the immutability of blockchain, it can notarize the copyright of design works across the entire network.
[0013] The transaction evidence storage chain is used to store the copyright transaction records of design works, and is also used to notarize the entire transaction process across the network and prove the legality of the copyright records in the copyright evidence storage chain.
[0014] The verification module is used to compare the cryptographic features of the design works in the copyright registration chain with the actual design works off the chain, thereby verifying the authenticity of the design works and the validity of the copyright registration, and providing a means of verifying the ownership of the design works.
[0015] The artwork transaction contract uses smart contract technology and a delivery verification mechanism to enable online transactions of design works, and is also used for reading and writing data to the copyright certificate chain and the transaction certificate chain.
[0016] Furthermore, the consensus node includes multiple computer nodes, and the public query node includes multiple computer nodes that are different from those in the consensus node.
[0017] Furthermore, the verification module uses asymmetric encryption technology to compare the cryptographic features of the design work in the copyright registration chain with the actual design work off-chain.
[0018] Furthermore, the copyright certificate storage chain, transaction certificate storage chain, and work transaction contract are interconnected, including:
[0019] The on-chain digital identity of the design work generated by the copyright certificate chain is used as an important execution parameter of the work transaction contract, triggering the record generation operation of the transaction certificate chain;
[0020] Through cross-chain technology, records in the transaction storage chain will trigger work transaction contracts, add copyright records in the copyright storage chain, and update the digital identity of the design work;
[0021] The digital identity of the design work in the copyright registration chain and the records in the transaction registration chain jointly prove the legality of the copyright change path of the work.
[0022] Furthermore, the users include designers, buyers of design works, sellers of design works, and ordinary users;
[0023] The designer mentioned is the original registrant of the copyright record and needs to register as a user;
[0024] The buyers of the design works are users who need to purchase the design works and obtain copyright through the blockchain system, and they need to register as users.
[0025] The sellers of the design works include designers or previous buyers of the design works, and user registration is required;
[0026] The term "ordinary user" refers to a user who simply uses the blockchain system to verify the ownership of any design work and query and trace copyright information, without needing to register.
[0027] A blockchain-based design copyright management method is implemented based on the blockchain-based design copyright management system described above, including user registration, copyright protection, and work transaction processes.
[0028] The user registration process involves users registering through a CA node, which ensures that copyright protection and work transaction processes rely on blockchain technology.
[0029] The copyright protection process involves designers submitting their designs to the copyright management system, and uploading the copyright record to the copyright registration chain through consensus nodes. At the same time, a unique digital identity for the design is generated on the blockchain, providing a foundation for online transactions of the design through the blockchain. Subsequently, all users can query and trace the copyright information of the design through public query nodes, and complete the confirmation of rights verification through the verification module.
[0030] The transaction process involves buying and selling design works through a transaction contract. The buyer pays the transaction amount to a smart contract for temporary escrow, and then the seller delivers the design work to the buyer through the copyright management system. If the delivery process passes the verification mechanism, the smart contract adds a copyright record to the copyright registration chain, completes the copyright information change, and releases the transaction amount to the seller.
[0031] Furthermore, the copyright registration process in the copyright protection stage includes the following steps:
[0032] S1. The designer divides the design work into a public registration part and a confidential registration part according to the requirements, and calculates the cryptographic characteristics of the confidential registration part through the copyright management system;
[0033] S2. Upload the cryptographic features of the confidential registration portion and the public registration portion to the copyright management system, obtain a unique work ID assigned to the design work by the copyright management system, and register the initial ownership as the designer himself;
[0034] S3. Using a digital signature algorithm, the designer uses their private key in the copyright management system to generate a digital signature based on the cryptographic features of the confidential registration section, the public registration section, the work ID, and the ownership information, which is used to sign the design work.
[0035] S4. Based on the digital signature and all information uploaded by the designer, a copyright record is generated, and the consensus node writes the copyright record into the copyright registration chain to realize copyright registration.
[0036] Furthermore, in step S1, the cryptographic features of the confidential registration portion are calculated by the copyright management system using a one-way encryption algorithm.
[0037] Furthermore, the delivery verification process in the copyright transaction includes the following steps:
[0038] With the support of the public key list maintained by the CA node, the design works sent by the design work seller to the design work buyer are encrypted using an asymmetric encryption algorithm, and the encrypted file is temporarily stored in the copyright management system server;
[0039] Buyers of design works submit their private keys to the copyright management system to decrypt and download the encrypted files of the design works;
[0040] The copyright management system uses the private key of the buyer of the design work to generate a digital signature on the decrypted design work file and submits it to the work transaction contract;
[0041] The copyright transaction contract uses a reverse algorithm of digital signature to calculate the cryptographic features of the decrypted file and compares them with the cryptographic features of the corresponding record in the copyright certificate chain. If they match, the delivery verification passes; otherwise, the delivery verification fails.
[0042] Furthermore, when it is necessary to verify the authenticity of a design work and the validity of its copyright registration, the verification module performs the following tasks:
[0043] Obtain the work ID provided by the user, retrieve all matching copyright records in the copyright registration chain, and select the latest record among the matching copyright records based on the blockchain timestamp;
[0044] Based on the design files provided by the user, the cryptographic features of the design are recalculated using a one-way encryption algorithm;
[0045] The recalculated cryptographic features are compared for consistency with the cryptographic features in the copyright record;
[0046] With the support of CA nodes, the authenticity and validity of the user's digital signature in the copyright record are verified through digital signature technology; if both the consistency comparison and digital signature verification pass, it proves that the user has the legal rights to the design work.
[0047] Compared with the prior art, the present invention has the following beneficial effects:
[0048] 1. This invention combines blockchain technology with digital rights management to achieve a new way of managing the copyright of design works. It overcomes the shortcomings of existing DRM methods that are out of touch with actual application scenarios, and can protect the content of design works while ensuring the fairness of transactions.
[0049] 2. This invention registers users' design works in two parts: a public registration part and a confidential registration part. This not only achieves effective copyright management but also prevents users' design content from being completely stolen, thus enhancing security. Attached Figure Description
[0050] Figure 1 This is a schematic diagram illustrating the basic process and corresponding technical framework of the present invention;
[0051] Figure 2 This is a schematic diagram illustrating the copyright registration process for the design work in this invention;
[0052] Figure 3 This is a schematic diagram illustrating the copyright information tracing process of the designed works in this invention;
[0053] Figure 4 This is a schematic diagram of the online transaction process for the design work in this invention;
[0054] Figure 5 This is a schematic diagram illustrating the copyright change process of the design work in this invention. Detailed Implementation
[0055] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.
[0056] This invention proposes a blockchain-based copyright management system for design works, including a CA node, a consensus node, a public query node, a copyright storage chain, a verification module, a transaction storage chain, and a work transaction contract;
[0057] CA nodes provide user registration services and identity authentication for the copyright notarization chain, transaction notarization chain, and verification module. For each user who passes real-name verification, the CA node will generate a unique private / public key pair using asymmetric encryption technology for identity authentication. The generated private key is held only by the user, and the CA node maintains a list of all users' public keys.
[0058] Consensus nodes are used to maintain the blockchain data of the copyright and transaction evidence storage chains through consensus algorithms, ensuring the immutability of the data and thus achieving network-wide notarization of on-chain records. Consensus nodes also serve as the pathway and service provider for recording copyright information on the blockchain.
[0059] Public query nodes obtain blockchain data from different consensus nodes for the copyright and transaction evidence storage chains and provide them to the public for querying.
[0060] The copyright certificate storage chain is used to store the copyright information and related cryptographic features of design works; with the help of the immutability of blockchain, it can notarize the copyright of design works across the entire network.
[0061] The transaction evidence storage chain is used to store the copyright transaction records of design works, and at the same time, it is used to notarize the entire transaction process across the network and prove the legality of the copyright records in the copyright evidence storage chain.
[0062] The verification module is used to compare the cryptographic features of the design works in the copyright registration chain with the actual design works off the chain, thereby verifying the authenticity of the design works and the validity of the copyright registration, and providing a means of verifying the ownership of the design works.
[0063] The artwork transaction contract uses smart contract technology and a delivery verification mechanism to enable online transactions of design works, and is also used for reading and writing data to the copyright certificate chain and the transaction certificate chain.
[0064] A consensus node consists of multiple computer nodes, while a public query node consists of multiple computer nodes that are different from those in the consensus node.
[0065] The verification module uses asymmetric encryption technology to compare the cryptographic features of the design works in the copyright registration chain with the actual design works off-chain.
[0066] The copyright registration chain, the transaction registration chain, and the work transaction contract are interconnected, including:
[0067] The on-chain digital identity of the design work generated by the copyright certificate chain is used as an important execution parameter of the work transaction contract, triggering the record generation operation of the transaction certificate chain;
[0068] Through cross-chain technology, records in the transaction storage chain will trigger work transaction contracts, add copyright records in the copyright storage chain, and update the digital identity of the design work;
[0069] The digital identity of the design work in the copyright registration chain and the records in the transaction registration chain jointly prove the legality of the copyright change path of the work.
[0070] In this embodiment, users include designers, buyers of design works, sellers of design works, and ordinary users. Designers are the initial registrants of copyright records and need to register as users. Buyers of design works are users who need to purchase design works and obtain copyrights through the blockchain system and need to register as users. Sellers of design works include designers or previous buyers of design works and need to register as users. Ordinary users are users who only use the blockchain system to verify the ownership of any design work and query and trace copyright information, and do not need to register as users.
[0071] Based on this system, a blockchain-based copyright management method for design works can be implemented, including user registration, copyright protection, and work transaction processes.
[0072] The user registration process involves users registering through a CA node, which ensures that copyright protection and work transactions rely on blockchain technology.
[0073] In the copyright protection process, designers submit their designs to the copyright management system, and the copyright record is uploaded to the copyright registration chain through consensus nodes. At the same time, a unique digital identity for the design is generated on the blockchain, providing a foundation for the online trading of the design through the blockchain. Subsequently, all users can query and trace the copyright information of the design through public query nodes, and complete the confirmation of rights through the verification module.
[0074] The transaction process for artworks is facilitated through an artwork transaction contract. The buyer pays the transaction amount to a smart contract for temporary escrow, and then the seller delivers the artwork to the buyer through the copyright management system. If the delivery process passes the verification mechanism, the smart contract adds a copyright record to the copyright registration chain, completes the copyright information change, and releases the transaction amount to the seller.
[0075] Copyright registration in the copyright protection process includes the following steps:
[0076] S1. The designer divides the design work into a public registration part and a confidential registration part according to the requirements, and calculates the cryptographic characteristics of the confidential registration part through a one-way encryption algorithm using the copyright management system.
[0077] S2. Upload the cryptographic features of the confidential registration section and the public registration section to the copyright management system, obtain a unique work ID assigned to the design work by the copyright management system, and register the initial ownership as the designer himself;
[0078] S3. Using a digital signature algorithm, designers use their private key in the copyright management system to generate a digital signature based on the cryptographic features of the confidential registration section, the public registration section, the work ID, and the ownership information, which is used to sign the design work.
[0079] S4. Based on the digital signature and all information uploaded by the designer, a copyright record is generated. The consensus node writes the copyright record into the copyright registration chain to realize copyright registration.
[0080] Delivery verification in the copyright transaction process includes the following steps:
[0081] With the support of the public key list maintained by the CA node, the design works sent by the design work seller to the design work buyer are encrypted using an asymmetric encryption algorithm, and the encrypted file is temporarily stored in the copyright management system server;
[0082] Buyers of design works submit their private keys to the copyright management system to decrypt and download the encrypted files of the design works;
[0083] The copyright management system uses the private key of the buyer of the design work to generate a digital signature on the decrypted design work file and submits it to the work transaction contract;
[0084] The copyright transaction contract uses a reverse algorithm of digital signature to calculate the cryptographic features of the decrypted file and compares them with the cryptographic features of the corresponding record in the copyright certificate chain. If they match, the delivery verification passes; otherwise, the delivery verification fails.
[0085] When it is necessary to verify the authenticity of a design work and the validity of its copyright registration, the verification module performs the following tasks:
[0086] (1) Obtain the work ID provided by the user, retrieve all matching copyright records in the copyright storage chain, and select the latest record among the matching copyright records based on the blockchain timestamp;
[0087] (2) Based on the design work files provided by the user, the cryptographic features of the design work are recalculated using a one-way encryption algorithm;
[0088] (3) Compare the recalculated cryptographic features with the cryptographic features in the copyright record for consistency;
[0089] (4) With the support of the CA node, the authenticity and validity of the user's digital signature in the copyright record are verified by digital signature technology; if the consistency comparison and digital signature verification are both passed, it proves that the user has the legal rights to the design work.
[0090] like Figure 1 As shown, the design copyright management system and method based on blockchain proposed in this invention includes the following steps:
[0091] (1) Users with copyright management needs register in the blockchain system. After registration, each user will be assigned a unique private / public key pair by the CA node.
[0092] (2) The designer transfers the copyrighted work they hold through, such as Figure 2 The steps shown involve registering the copyright on the blockchain. The design work ID will be used to retrieve the work's digital identity.
[0093] (3) Any user of the system (even without registration) can query and trace the copyright information of a work based on its design ID. The tracing process is as follows: Figure 3 As shown; any user can also use any design work they own to verify the ownership of that design work.
[0094] (4) Once the buyer and designer of the design work reach an agreement on the transaction and copyright acquisition, they can conduct the transaction based on the blockchain system and smart contracts. The entire online transaction process is as follows: Figure 4 As shown. This invention employs a delivery verification mechanism to ensure the fairness of the transaction process and uses smart contracts to automatically change copyright information. The copyright change process is as follows... Figure 5 As shown.
[0095] In the above process, since each copyright record is attached with a blockchain timestamp and the records on the chain are immutable, the copyright records on the chain can provide a strong basis for confirming the copyright of design works, protecting rights in cases of infringement, and investigating and punishing plagiarized works on the chain.
[0096] Secondly, in the process of online trading and copyright transfer of design works, this invention can also address the following fraudulent activities:
[0097] (1) The seller delivered false design documents;
[0098] If the design delivered by the seller does not match the copyright record on the blockchain, delivery verification will fail. This will prevent the seller from receiving payment from the smart contract. Conversely, the artwork transaction contract pre-sets a latest acceptance deadline for the buyer. If the buyer's acceptance fails to pass delivery verification before this deadline, the smart contract will initiate a breach of contract process. The seller will then be penalized.
[0099] (2) Designers register and sell fake design works;
[0100] If a designer registers false design information during copyright registration to pass delivery verification, the immutability of blockchain will leave evidence of forgery. Buyers can then use the purchased fake design, the forgery record in the copyright registration chain, and the designer's digital signature on the forgery record to appeal to relevant regulatory authorities.
[0101] Furthermore, even if a designer registers a false confidentiality document during copyright registration, they must still disclose a portion of their authentic design work to facilitate sales. This portion of the work already embodies the designer's inspiration and possesses inherent value. A false copyright registration offers no protection, thus depriving the designer of the opportunity to protect their design inspiration through copyright.
[0102] The methods described above are profit-driven. Therefore, designers will spontaneously refrain from selling fake design works. Consequently, the likelihood of such fraudulent scenarios occurring will be greatly reduced.
[0103] (3) Designers steal ownership of sold works by repeatedly registering design copyrights;
[0104] As a special type of digital asset, a design work ID is a crucial index for design works. In the proposed method, registering the same design work multiple times will generate different design work IDs. Although they actually correspond to the same design work, these IDs represent two conceptually independent digital assets on the blockchain. Even if a designer repeatedly registers the same design work, they cannot steal digital assets that have already been sold. On the contrary, repeated registration and trading of the same work will leave digital evidence on the blockchain, raising suspicions of plagiarism. The blockchain system maintainers and regulatory authorities can use these records to penalize the designer.
[0105] (4) The buyer deliberately refuses to accept the documents sent by the seller, thus delaying the transaction process;
[0106] In the proposed method, the buyer must first submit their private key to the blockchain system to indicate their agreement to receive the files sent by the seller before decryption and downloading can begin. Therefore, if the buyer does not agree to receive the files, they cannot obtain the true content of the delivered work. This method ensures the security of the design work's content. Furthermore, a pre-defined deadline for the buyer's acceptance will be included in the work transaction contract before the transaction begins. Failure to accept the files by the deadline will trigger a pre-defined breach of contract process, resulting in penalties for the buyer.
[0107] Furthermore, the copyright protection and copyright transaction processes in this invention are interdependent, complementary, and mutually reinforcing. This is specifically reflected in:
[0108] (1) In order to facilitate the smooth transaction of design works, designers will voluntarily register true and valid work information when registering copyright.
[0109] (2) Transactions on the blockchain leave traceable evidence. In order to obtain legal and valid copyright licenses, both parties to the transaction will spontaneously abide by the transaction order and conduct transactions in good faith.
[0110] Due to this self-motivating characteristic, the implementation of this invention helps to build a healthy intellectual property protection system and e-commerce model.
[0111] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A blockchain-based copyright management system for design works, characterized in that, This includes CA nodes, consensus nodes, public query nodes, copyright certificate storage chain, verification module, transaction certificate storage chain, and works transaction contract; The CA node is used to provide user registration services, and at the same time provides identity authentication for the copyright evidence storage chain, transaction evidence storage chain and verification module; The consensus nodes are used to maintain the blockchain data of the copyright certificate storage chain and the transaction certificate storage chain through the consensus algorithm, ensuring the immutability of the data; The public query nodes obtain blockchain data from the copyright certificate storage chain and the transaction certificate storage chain from different consensus nodes and provide them to the public for querying. The copyright certificate storage chain is used to store the copyright information and related cryptographic features of the design works; The transaction evidence storage chain is used to store the copyright transaction records of design works, and is also used to notarize the entire transaction process across the network and prove the legality of the copyright records in the copyright evidence storage chain. The verification module is used to compare the cryptographic features of the design works in the copyright registration chain with the actual design works off the chain, thereby verifying the authenticity of the design works and the validity of the copyright registration, and providing a means of verifying the ownership of the design works. The artwork transaction contract uses smart contract technology and a delivery verification mechanism to realize online transactions of design works, and is also used to read and write data to the copyright certificate chain and the transaction certificate chain. The copyright certificate storage chain, transaction certificate storage chain, and work transaction contract are interconnected, including: The on-chain digital identity of the design work generated by the copyright certificate chain is used as an important execution parameter of the work transaction contract, triggering the record generation operation of the transaction certificate chain; Through cross-chain technology, records in the transaction storage chain will trigger work transaction contracts, add copyright records in the copyright storage chain, and update the digital identity of the design work; The digital identity of the design work in the copyright registration chain and the records in the transaction registration chain jointly prove the legality of the copyright change path of the work.
2. The blockchain-based copyright management system for design works according to claim 1, characterized in that, The consensus node includes multiple computer nodes, and the public query node includes multiple computer nodes that are different from the consensus node.
3. The blockchain-based copyright management system for design works according to claim 1, characterized in that, The verification module uses asymmetric encryption technology to compare the cryptographic features of the design works in the copyright registration chain with the actual design works off-chain.
4. A blockchain-based copyright management system for design works according to claim 1, characterized in that, The users include designers, buyers of design works, sellers of design works, and ordinary users; The designer mentioned is the original registrant of the copyright record and needs to register as a user; The buyers of the design works are users who need to purchase the design works and obtain the copyright through the blockchain system, and they need to register as users. The sellers of the design works include designers or previous buyers of the design works, and user registration is required; The term "ordinary user" refers to a user who simply uses the blockchain system to verify the ownership of any design work and query and trace copyright information, without needing to register.
5. A blockchain-based method for managing the copyright of design works, characterized in that, The implementation is based on a blockchain-based copyright management system for design works as described in any one of claims 1-4, including a user registration process, a copyright protection process, and a work transaction process. The user registration process involves users registering through a CA node, which ensures that copyright protection and work transaction processes rely on blockchain technology. The copyright protection process involves designers submitting their designs to the copyright management system and uploading the copyright record to the copyright certificate chain through consensus nodes, while simultaneously generating a unique digital identity for the design on the blockchain. The transaction process involves buying and selling design works through a transaction contract. The buyer pays the transaction amount to a smart contract for temporary escrow, and then the seller delivers the design work to the buyer through a copyright management system. If the delivery process passes the verification mechanism, the smart contract will add a new copyright record in the copyright registration chain, complete the copyright information change, and release the transaction payment to the seller.
6. The blockchain-based copyright management method for design works according to claim 5, characterized in that, Copyright registration in the copyright protection process includes the following steps: S1. The designer divides the design work into a public registration part and a confidential registration part according to the requirements, and calculates the cryptographic characteristics of the confidential registration part through the copyright management system; S2. Upload the cryptographic features of the confidential registration portion and the public registration portion to the copyright management system, obtain a unique work ID assigned to the design work by the copyright management system, and register the initial ownership as the designer himself; S3. Using a digital signature algorithm, the designer uses their private key in the copyright management system to generate a digital signature based on the cryptographic features of the confidential registration section, the public registration section, the work ID, and the ownership information, which is used to sign the design work. S4. Based on the digital signature and all information uploaded by the designer, a copyright record is generated, and the consensus node writes the copyright record into the copyright registration chain to realize copyright registration.
7. A blockchain-based copyright management method for design works according to claim 6, characterized in that, In step S1, the cryptographic features of the confidential registration section are calculated by the copyright management system using a one-way encryption algorithm.
8. A blockchain-based copyright management method for design works according to claim 5, characterized in that, The delivery verification process in the copyright transaction includes the following steps: With the support of the public key list maintained by the CA node, the design works sent by the design work seller to the design work buyer are encrypted using an asymmetric encryption algorithm, and the encrypted file is temporarily stored in the copyright management system server; Buyers of design works submit their private keys to the copyright management system to decrypt and download the encrypted files of the design works; The copyright management system uses the private key of the buyer of the design work to generate a digital signature on the decrypted design work file and submits it to the work transaction contract; The copyright transaction contract uses a reverse algorithm of digital signature to calculate the cryptographic features of the decrypted file and compares them with the cryptographic features of the corresponding record in the copyright certificate chain. If they match, the delivery verification passes; otherwise, the delivery verification fails.
9. A blockchain-based copyright management method for design works according to claim 5, characterized in that, When it is necessary to verify the authenticity of a design work and the validity of its copyright registration, the verification module performs the following tasks: Obtain the work ID provided by the user, retrieve all matching copyright records in the copyright registration chain, and select the latest record among the matching copyright records based on the blockchain timestamp; Based on the design files provided by the user, the cryptographic features of the design are recalculated using a one-way encryption algorithm; The recalculated cryptographic features are compared for consistency with the cryptographic features in the copyright record; With the support of CA nodes, digital signature technology is used to verify the authenticity and validity of user digital signatures in copyright records; If both the consistency comparison and digital signature verification pass, it proves that the user has the legal rights to the design work.