Digital Copyright Management System Based on Blockchain Technology

Abstract

The present invention discloses a digital copyright management method based on blockchain technology. The method includes the following steps: Step 1: Use an open-source consortium blockchain to provide technical support for the digital copyright transaction process; Step 2: Based on the digital copyright information registered on the blockchain, call a smart contract to execute the compiled logic of the digital copyright transaction process for auditing; Step 3: After the digital copyright transaction process data is loaded into the upload data center, use an encryption and confirmation model to encrypt and decrypt the data. After execution, perform data transmission and save it to the backend database; In this method, the data center stores data in a public ledger in units of blocks based on the open-source consortium blockchain, links the blocks in chronological order into a chain structure, and uses the block-chain structure to verify and store data. The present invention has the characteristics of improving the information support efficiency of digital copyright management and strengthening the transmission of copyright information among various right holders.

Description

Technical Field

[0001] The present invention relates to the technical field of copyright management, and specifically to a digital copyright management system based on blockchain technology. Background Art

[0002] In the digital age, the rapid development of the Internet has made data replication and dissemination increasingly common, which has led to frequent occurrence of copyright infringement problems. The increase in digital products has not brought about an enhancement of copyright protection awareness. Many creators only have a general concept of copyright, which has also led to the prevalence of piracy and infringement on the Internet, constantly infringing on the rights and interests of creators. Coupled with the fact that Internet users are accustomed to using digital products for free on the Internet, the phenomenon of digital product piracy and infringement has not been curbed, but has become even more rampant. Most traditional digital copyright management methods adopt a centralized management model, which has problems such as a long cycle for rights confirmation and low security for data storage. Therefore, it is necessary to design a digital copyright management system based on blockchain technology to improve the information support efficiency of digital copyright management and strengthen the transmission of copyright information among various rights holders. Summary of the Invention

[0003] The purpose of the present invention is to provide a digital copyright management system based on blockchain technology to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: A digital copyright management method based on blockchain technology, including the following steps:

[0005] Step 1: Use an open-source consortium blockchain to provide technical support for the digital copyright transaction process;

[0006] Step 2: Based on the digital copyright information registered on the chain, call a smart contract to execute the compiled digital copyright transaction process logic for review;

[0007] Step 3: When the digital copyright transaction process data is loaded into the upload data center, use an encryption and rights confirmation model to encrypt and decrypt the data, and after execution, perform data transmission and storage in the backend database.

[0008] According to the above technical solution, the steps of constructing a consortium blockchain involving all stakeholders include:

[0009] Based on the usage requirements of digital copyright information protection and management permission control for the participating entities in digital copyright protection;

[0010] Construct a consortium blockchain involving all stakeholders;

[0011] In the internal structure of the digital copyright industry ecosystem, digital publishing institutions, media platforms, copyright service institutions, and government supervision departments are selected and incorporated into the alliance system;

[0012] Based on their respective copyright protection demands, the digital copyright protection mechanism of the alliance blockchain is used to manage the digital copyright transaction process.

[0013] According to the above technical solution, the steps for the alliance chain to manage the digital copyright registration transaction process of users include:

[0014] When a digital copyright registrant has a need to register digital copyrights, they register and log in to the system. After registration and login, the digital copyright registrant is redirected to the registrant page;

[0015] The system executes the digital copyright registration function: by the request sent from the front-end page, it calls the method in the copyright registration contract;

[0016] After the system adds the digital copyright registrant to the test network, a pair of public and private keys is generated. The account address generated by the public key is used as the identity identifier of the registrant in the network, and the private key is used to digitally sign the copyright registration information as the unique identifier of the copyright registration information. Other participating node parties can verify the authenticity of this identifier;

[0017] After synchronization and identity authentication, the relevant identity information is written into the blockchain for identity evidence storage, and the visible objects of the privacy identity information are set according to the situation to ensure the authenticity of the digital copyright registrant's identity.

[0018] According to the above technical solution, the steps for registering the digital copyright information on the chain include:

[0019] The digital copyright registrant generates a piece of copyright registration information based on information such as the copyright number, author, work name, hash value of the work file, recording time, etc.;

[0020] According to the authenticity verification algorithm of copyright registration, the transaction data and digital signature generated by the digital copyright registrant are sent to the blockchain network for verification. After verification, it is broadcast to the blockchain network to complete the data storage of the copyright registration information;

[0021] Calculate the hash value of the work to be registered and use the encryption algorithm to digitally sign and store it in the remote server, and send the work information to the corresponding digital copyright service institution to decrypt the encrypted work through the key;

[0022] Conduct digital copyright detection on the content similarity identification and provide corresponding proofs. According to the relevant results, execute the smart contract, and take the hash value of the work, digital watermark, and the privacy information of the author as the digital copyright information to be registered on the chain.

[0023] According to the above technical solution, the method and steps for executing the smart contract include:

[0024] Step 21: After joining the test network, the auditor generates a pair of public and private keys. The account address generated by the public key serves as the auditor's identity in the network. The private key digitally signs the copyright registration information being audited. Other participating nodes can verify the authenticity of the signature to ensure the auditor's identity is authentic.

[0025] Step 22: Use the smart contract to compile and generate a bytecode file, deploy the file to the open source alliance chain test network, define the execution rules as executable code, automatically execute the corresponding logic when the preset execution conditions are met, and store the transaction data in the alliance chain;

[0026] Step 23: Synchronously divide the authenticity verification of transaction data in the digital copyright management process into authenticity verification of digital copyright registration information and authenticity verification of digital copyright query information;

[0027] Step 24: The smart contract specifies the business logic for digital copyright transaction process management, including the representation of digital copyright management participants, the generation of trusted identifiers for digital copyright management information, the representation of digital copyright management data, and the authenticity verification mechanism for digital copyright management.

[0028] Step 25: Authenticate the participants of digital copyright management, identify the digital copyright registration information as trustworthy, verify the authenticity of the digital copyright registration information, and finally store the copyright registration data in the alliance chain.

[0029] According to the above technical solution, the method and steps for encrypting and decrypting data using the encryption and ownership confirmation model include:

[0030] Step 31: Digital Copyright Registration: The user initiates a request for digital copyright content confirmation on the client. After receiving this request, the data center that receives the user's request hashes the digital copyright content uploaded by the user.

[0031] Step 32: Send the hash value that passes the originality check to the data center at the bottom of the client. The data center reads the digital copyright transaction process in the form of a file into a data stream that can be used for encryption.

[0032] Step 33: Send a transaction proposal to the blockchain network by calling the blockchain node, where the transaction proposal includes information such as the identifier of the calling contract, the contract method, parameter information, and the client's digital signature;

[0033] Step 34: Encrypt the read data stream. Use a random key generator to form a seed consisting of 62 characters based on the upper and lower cases of 26 English letters and 10 digits from 0 to 9, and perform the encryption operation.

[0034] Step 35: Initialize the random vector to encrypt the read data stream. Based on the composed seed, perform random confusion to obtain a permutation combination of randomly mixed upper and lower cases of English letters and numbers. Select a fixed 32-bit long string as a random code for the offset, and re-encode the random code in utf-8 mode.

[0035] Step 36: After re-encoding, obtain a 64-byte string. Use the current time and IP address as the seed, and use the MD5 hash algorithm to obtain a unique space-time code. Use the generated random code and space-time code as the encryption keys, and output the ciphertext stream.

[0036] After the encryption is completed, the transaction proposal sends this information to other data centers that do not participate in the consensus. The data centers store the data in a public ledger in units of blocks based on the open-source consortium blockchain, link the blocks in chronological order into a chain structure, and verify and store the data through the block-chain structure.

[0037] According to the above technical solution, the digital copyright management system includes:

[0038] A digital copyright transaction process module for managing digital copyright transaction process operations.

[0039] An intelligent contract execution module for the system to call the intelligent contract to execute the compiled digital copyright transaction process logic for review.

[0040] A data encryption and decryption management module for encrypting and decrypting the digital copyright transaction process data loaded into the data center using the encryption and rights confirmation model.

[0041] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0042] 1. Through the digital copyright registration work process promoted by blockchain technology, it can be made simpler, the registration period can be shortened, and compared with the traditional digital copyright registration process, the procedures can be truly burden-reduced.

[0043] 2. Due to the decentralized nature of blockchain technology itself, it can completely record all the information contained in each step of the management process from the generation to the transfer of digital copyright. Under the action of blockchain technology, it protects from the source of digital copyright generation. During the transfer process, users conduct each copyright transaction through intelligent contracts, which can gradually cultivate the standardized trading habits of the public.

[0044] 3. Since the blockchain technology has the characteristic of immutability, it can ensure that digital copyrights will not be infringed during the transaction process, reducing the occurrence of infringement acts in the management processes of digital copyrights in dissemination, authorization, and sub-licensing. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0046] Figure 1 is a flowchart of the digital copyright management method based on blockchain technology provided in Embodiment 1 of the present invention;

[0047] Figure 2 is a schematic diagram of the module composition of the digital copyright management system based on blockchain technology provided in Embodiment 2 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0049] Embodiment 1: Figure 1 is a flowchart of the digital copyright management method based on blockchain technology provided in Embodiment 1 of the present invention. This embodiment can be applied to the scenario of digital copyright management. This method can be executed by the digital copyright management system based on blockchain technology provided in this embodiment, as Figure 1 shown. The method specifically includes the following steps:

[0050] Step 1: Use an open-source consortium blockchain to provide technical support for the digital copyright transaction process;

[0051] In the embodiment of the present invention, based on the usage requirements of digital copyright information protection and management permission control for the participating entities in digital copyright protection, a consortium blockchain involving all stakeholders is constructed. In the internal structure of the digital copyright industrial ecosystem, digital publishing institutions, media platforms, copyright service institutions, and government supervision departments are selected to be included in the consortium system. Based on their respective copyright protection demands, the digital copyright protection mechanism of the consortium blockchain is used to manage the digital copyright transaction process;

[0052] Exemplarily, the process management of the digital copyright registration affairs for users by the consortium blockchain is as follows: When a digital copyright registrant has a need for digital copyright registration, the registrant logs in to the system after registration. After logging in, the digital copyright registrant is redirected to the registrant page, and the system executes the digital copyright registration function: Through the request sent from the front-end page, the method in the copyright registration contract is called. After the system adds the digital copyright registrant to the test network, a pair of public and private keys is generated. The account address generated by the public key serves as the identity identifier of the registrant in the network, and the private key digitally signs the copyright registration information as the unique identifier of the copyright registration information. Other participating node parties can verify the authenticity of this identifier, and after synchronous identity authentication, write the relevant identity information into the blockchain for identity deposit, and set the visible objects of the privacy identity information according to the situation to ensure that the identity of the digital copyright registrant is real;

[0053] Exemplarily, the digital copyright registrant generates a piece of copyright registration information based on information such as the copyright number, author, work name, hash value of the work file, recording time, etc. According to the authenticity verification algorithm of copyright registration, the transaction data and digital signature generated by the digital copyright registrant are sent to the blockchain network for verification. After passing the verification, it is broadcast to the blockchain network to complete the data storage of the copyright registration information. Calculate the hash value of the work to be registered and use the encryption algorithm to digitally sign and store it in the remote server. Send the work information to the corresponding digital copyright service agency to decrypt the encrypted work through the key, conduct digital copyright detection on the content similarity identification, and provide the corresponding proof. Execute the smart contract according to the relevant results, and register the hash value of the work, digital watermark and the privacy information of the author on the chain as digital copyright information.

[0054] Step 2: Based on the digital copyright information registered on the chain, call the smart contract to execute the compiled digital copyright transaction process logic for review;

[0055] In this embodiment, the method steps for executing the smart contract are as follows:

[0056] Step 21: After the reviewer joins the test network, a pair of public and private keys is generated. The account address generated by the public key serves as the identity identifier of the reviewer in the network, and the private key digitally signs the copyright registration information to be reviewed. Other participating node parties can verify the authenticity of this identifier to ensure that the identity identifier of the reviewer is real;

[0057] Step 22: Use the smart contract to compile and generate a bytecode file, deploy this file to the test network of the open-source consortium blockchain, define the execution rules as executable code, automatically execute the corresponding logic when the preset execution conditions are met, and store the transaction data in the consortium blockchain;

[0058] Step 23: Synchronously divide the authenticity verification of transaction data in the digital copyright management process into authenticity verification of digital copyright registration information and authenticity verification of digital copyright query information;

[0059] Step 24: The smart contract specifies the business logic for digital copyright transaction process management, including the representation of digital copyright management participants, the generation of trusted identifiers for digital copyright management information, the representation of digital copyright management data, and the authenticity verification mechanism for digital copyright management.

[0060] Step 25: Authenticate the participants of digital copyright management, identify the digital copyright registration information as trustworthy, verify the authenticity of the digital copyright registration information, and finally store the copyright registration data in the alliance chain.

[0061] Step 3: After the digital copyright transaction process data is loaded into the upload data center, the encryption and decryption model is used to encrypt and decrypt the data. After execution, the data is transmitted and stored in the back-end database.

[0062] In the embodiment of the present invention, the encryption and decryption method of the encryption and ownership confirmation model is as follows:

[0063] Step 31: Digital Copyright Registration: The user initiates a request for digital copyright content confirmation on the client. After receiving this request, the data center that receives the user's request hashes the digital copyright content uploaded by the user.

[0064] Step 32: Send the hash value that passes the originality check to the data center at the bottom of the client. The data center reads the digital copyright transaction process in the form of a file into a data stream that can be used for encryption.

[0065] Step 33: Send a transaction proposal to the blockchain network by calling the blockchain node, where the transaction proposal includes information such as the identifier of the calling contract, the contract method, parameter information, and the client's digital signature;

[0066] Step 34: Encrypt the read data stream using a random key generator based on the 26 uppercase and lowercase English letters and the 10 numbers 0-9, forming a total of 62 characters to perform the encryption operation;

[0067] Step 35: Initialize a random vector to encrypt the read data stream, perform random obfuscation based on the seed, and obtain a random combination of uppercase and lowercase English letters and numbers. The offset selects a fixed 32-bit string as a random code, and re-encodes the random code in UTF-8 mode.

[0068] Step 36: After re-encoding, a 64-byte string is obtained. Using the current time and IP address as seeds, a unique space-time code is obtained by using the MD5 hash algorithm. The generated random code and space-time code are used as the encryption keys, and the ciphertext stream is output;

[0069] Step 37: After the encryption is completed, the transaction proposal sends this information to other data centers that do not participate in the consensus. The data centers store the data in a public ledger in units of blocks based on the open-source consortium blockchain, link the blocks in chronological order into a chain structure, and verify and store the data through the block-chain structure.

[0070] Embodiment 2: Embodiment 2 of the present invention provides a digital copyright management system based on blockchain technology, Figure 2 which is a schematic diagram of the module composition of the digital copyright management system based on blockchain technology provided in Embodiment 2 of the present invention, as Figure 2 shown. The system includes:

[0071] A digital copyright transaction process module for managing the operation of digital copyright transaction processes;

[0072] An intelligent contract execution module for the system to call the intelligent contract to execute the compiled digital copyright transaction process logic for review;

[0073] A data encryption and decryption management module for encrypting and decrypting the digital copyright transaction process data loaded into the data center using the encryption and rights confirmation model.

[0074] In some embodiments of the present invention, the digital copyright transaction process module includes:

[0075] A consortium blockchain construction module for constructing a consortium blockchain involving various stakeholders;

[0076] A digital copyright registration module for registering through the consortium blockchain when a digital copyright registrant has a need to register digital copyrights;

[0077] A registration on-chain module for registering the hash value of a digital copyright work, digital watermark, and the privacy information of the author on-chain as digital copyright information.

[0078] In some embodiments of the present invention, the intelligent contract execution module includes:

[0079] An identity identification review module for digitally signing the copyright registration information to be reviewed using public and private keys;

[0080] An execution rule definition module for defining the execution rules as executable code;

[0081] The authenticity verification mechanism module is used to divide the authenticity verification of transaction data in the digital copyright management process into the authenticity verification of digital copyright registration information and query information;

[0082] The consortium blockchain data storage module is used to store the copyright registration data into the consortium blockchain.

[0083] In some embodiments of the present invention, the data encryption and decryption management module includes:

[0084] The process data loading and uploading module is used to load the digital copyright transaction process data into the upload data center;

[0085] The encryption and rights confirmation model module is used to encrypt and decrypt the read data stream using the encryption and rights confirmation model;

[0086] The ciphertext stream output module is used to generate a random code and a space-time code as the encryption key and output the ciphertext stream.

[0087] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0088] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A digital copyright management method based on blockchain technology, characterized in that: The method includes the following steps: Step 1: Use an open-source consortium blockchain to provide technical support for the digital copyright transaction process; Step 2: Based on the digital copyright information registered on the blockchain, call the smart contract to execute the compiled digital copyright transaction process logic for auditing; Step 3: After the digital copyright transaction process data is loaded into the upload data center, use the encryption and rights confirmation model to encrypt and decrypt the data. After execution, perform data transmission and storage in the backend database; The steps to build a consortium blockchain involving all stakeholders include: Based on the usage requirements of digital copyright information protection and management permission control for the participating entities in digital copyright protection; Build a consortium blockchain involving all stakeholders; In the internal structure of the digital copyright industry ecosystem, select to include digital publishing institutions, media platforms, copyright service institutions, and government supervision departments into the consortium system; Based on their respective copyright protection demands, use the digital copyright protection mechanism of the consortium blockchain to manage the digital copyright transaction process; The steps of the consortium blockchain for managing the digital copyright registration transaction process of users include: When a digital copyright registrant has a need to conduct digital copyright registration, register and log in to the system. After registration and login, the digital copyright registrant jumps to the registrant page; The system executes the digital copyright registration function: Through the request sent from the front-end page, call the method in the copyright registration contract; The system generates a pair of public and private keys after adding the digital copyright registrant to the test network. The account address generated by the public key is used as the identity identifier of the registrant in the network, and the private key digitally signs the copyright registration information as the unique identifier of the copyright registration information. Other participating party nodes can verify the authenticity of this identifier; Synchronously write the relevant identity information into the blockchain for identity deposit after identity authentication, and set the visible objects of the privacy identity information according to the situation to ensure the authenticity of the digital copyright registrant's identity; The steps for registering the digital copyright information on the blockchain include: The digital copyright registrant generates a piece of copyright registration information based on the copyright number, author, work name, hash value of the work file, and recording time information; According to the authenticity verification algorithm of copyright registration, the transaction data and digital signature generated by the digital copyright registrant are sent to the blockchain network for verification. After verification, it is broadcast to the blockchain network to complete the data storage of the copyright registration information; Calculate the hash value of the work to be registered and use the encryption algorithm to digitally sign and store it in the remote server, and send the work information to the corresponding digital copyright service institution to decrypt the encrypted work through the key; Conduct digital copyright detection on the content similarity identification and provide corresponding proofs. According to the relevant results, execute the smart contract, and use the hash value of the work, digital watermark, and the privacy information of the author as the digital copyright information to be registered on the blockchain; The method steps for executing the smart contract include: Step 21: After joining the test network, the auditor generates a pair of public and private keys. The account address generated by the public key serves as the auditor's identity in the network. The private key digitally signs the copyright registration information being audited. Other participating nodes can verify the authenticity of the signature, ensuring that the auditor's identity is authentic. Step 22: Use the smart contract to compile and generate a bytecode file, deploy the file to the open source alliance chain test network, define the execution rules as executable code, automatically execute the corresponding logic when the preset execution conditions are met, and store the transaction data in the alliance chain; Step 23: Synchronously divide the authenticity verification of transaction data in the digital copyright management process into authenticity verification of digital copyright registration information and authenticity verification of digital copyright query information; Step 24: The smart contract specifies the business logic for digital copyright transaction process management, including the representation of digital copyright management participants, the generation of trusted identifiers for digital copyright management information, the representation of digital copyright management data, and the authenticity verification mechanism for digital copyright management. Step 25: Authenticate the digital copyright management participants, identify the digital copyright registration information as trustworthy, verify the authenticity of the digital copyright registration information, and finally store the copyright registration data in the alliance chain; The method and steps for encrypting and decrypting data using the encryption and rights confirmation model include: Step 31: The user initiates a request for digital copyright content confirmation on the client. After receiving the request, the data center that receives the user's request hashes the digital copyright content uploaded by the user. Step 32: Send the hash value that passes the originality check to the data center at the bottom of the client. The data center reads the digital copyright transaction process in the form of a file into a data stream that can be used for encryption. Step 33: Send a transaction proposal to the blockchain network by calling the blockchain node, where the transaction proposal includes the identifier of the calling contract, the contract method, parameter information, and the client's digital signature information; Step 34: Encrypt the read data stream using a random key generator based on the 26 uppercase and lowercase English letters and the 10 numbers 0-9, forming a total of 62 characters to perform the encryption operation; Step 35: Initialize a random vector to encrypt the read data stream, perform random obfuscation based on the seed, and obtain a random combination of uppercase and lowercase English letters and numbers. The offset selects a fixed 32-bit string as a random code, and re-encodes the random code in UTF-8 mode. Step 36: After re-encoding, a 64-byte string is obtained. The current time and IP address are used as seeds. The MD5 hash algorithm is used to obtain a unique time-space code. The generated random code and time-space code are used as encryption keys, and the ciphertext stream is output. Step 37: After the encryption is completed, the transaction proposal sends this information to other data centers that do not participate in the consensus. The data centers store the data in a public ledger in units of blocks based on the open-source consortium blockchain, link the blocks in chronological order into a chain structure, and verify and store the data through the block-chain structure.

2. A digital copyright management system for implementing the digital copyright management method based on blockchain technology according to claim 1, characterized in that: The system includes: A digital copyright transaction process module for managing the operation of digital copyright transaction processes; A smart contract execution module for the system to call the smart contract to execute the compiled digital copyright transaction process logic for review; A data encryption and decryption management module for encrypting and decrypting the digital copyright transaction process data loaded into the data center using an encryption and rights confirmation model.

3. The digital copyright management system according to claim 2, wherein: The digital copyright transaction process module includes: A consortium blockchain construction module for constructing a consortium blockchain involving all stakeholders; A digital copyright registration module for registering through the consortium blockchain when a digital copyright registrant has a need to register digital copyrights; A registration-on-chain module for registering the hash value of a digital copyright work, the digital watermark, and the privacy information of the author as digital copyright information on the chain.

4. The digital copyright management system according to claim 3, wherein: The smart contract execution module includes: An identity identification review module for digitally signing the copyright registration information to be reviewed using a public key and a private key; An execution rule definition module for defining the execution rules as executable code; A authenticity verification mechanism module for dividing the authenticity verification of transaction data in the digital copyright management process into the authenticity verification of digital copyright registration information and query information; A consortium blockchain data storage module for storing the copyright registration data in the consortium blockchain.

5. The digital copyright management system according to claim 4, wherein: The data encryption and decryption management module includes: A process data loading and uploading module for loading the digital copyright transaction process data into the upload data center; An encryption and rights confirmation model module for encrypting and decrypting the read data stream using an encryption and rights confirmation model; A ciphertext stream output module for generating a random code and a space-time code as the encryption key and outputting the ciphertext stream.

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