CN118674586A - Digital copyright management system based on block chain technology - Google Patents

Abstract

The invention discloses a digital copyright management method based on a blockchain technology, which comprises the following steps: step one: carrying out technical support on the digital copyright transaction flow by adopting an open-source alliance chain; step two: calling an intelligent contract to execute compiled digital copyright transaction flow logic to audit based on the digital copyright information of the registered uplink; step three: after the digital copyright transaction flow data is loaded into an uploading data center, encrypting and decrypting the data by utilizing an encryption and authentication model, and transmitting the data and storing the data in a back-end database after the execution is finished; in the method, the data center uses the block as a unit to store the public account book of the data based on the alliance chain of the open source, links the blocks into a chain structure according to the time sequence, and verifies the data and the stored data through the block chain structure.

Description

Digital copyright management system based on blockchain technology

Technical Field

The present invention relates to the technical field of copyright management, and in particular to a digital copyright management system based on blockchain technology.

Background Art

In the digital age, the rapid development of the Internet has made data copying and dissemination increasingly common, which in turn has led to the frequent occurrence of copyright infringement. The increase in digital products has not brought about an increase in copyright protection awareness. Many creators have only a concept of copyright, which has also led to the rampant piracy and infringement on the Internet, causing the rights and interests of creators to be constantly infringed. In addition, users on the Internet have become accustomed to using digital products for free on the Internet, resulting in the phenomenon of digital product piracy and infringement not only failing to curb the momentum, but becoming more rampant. Traditional digital copyright management methods mostly adopt a centralized management model, which has the problems of long confirmation cycle and low security of 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 between various right holders.

Summary of the invention

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 technology.

In order to solve the above technical problems, the present invention provides the following technical solutions: a digital copyright management method based on blockchain technology, comprising the following steps:

Step 1: Use open source consortium blockchain to provide technical support for the digital copyright affairs process;

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;

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 saved in the back-end database.

According to the above technical solution, the steps of constructing a consortium blockchain involving various stakeholders include:

Based on the usage requirements of digital copyright information protection and management authority control of the participants in digital copyright protection;

Build a consortium blockchain involving various stakeholders;

In the internal structure of the digital copyright industry ecosystem, digital publishing institutions, media platforms, copyright service agencies and government supervision departments are selected to be included in the alliance system;

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

According to the above technical solution, the steps of managing the digital copyright registration process of the user by the alliance chain include:

When a digital copyright registrant has a need to register digital copyright, he/she registers and logs in the system. After registration and logging in, the digital copyright registrant jumps to the registrant page;

The system executes the digital copyright registration function: through the request sent by 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, it generates a pair of public and private keys. The account address generated by the public key serves as the identity 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 nodes can verify the authenticity of the identifier.

After identity authentication, the relevant identity information is written into the blockchain for identity certification, and the visible object of the private identity information is set according to the situation to ensure the authenticity of the identity of the digital copyright registrant.

According to the above technical solution, the steps of registering the digital copyright information on the chain include:

The digital copyright registrant generates a copyright registration information based on the copyright number, author, work name, hash value of the work file, recording time and other information;

According to the authenticity verification algorithm of copyright registration, the transaction data and digital signature generated by the digitized copyright registrant are sent to the blockchain network for verification. After verification, they are broadcast to the blockchain network to complete the data storage of copyright registration information.

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

Conduct digital copyright detection on content similarity identification and provide corresponding proof. Execute smart contracts based on relevant results, and register the hash value of the work, digital watermark and the author’s privacy information on the chain as digital copyright information.

According to the above technical solution, the method and 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 identity to ensure 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 business logic of digital copyright transaction process management is specified in the smart contract, including the representation of participants in digital copyright management, the generation of trusted identifiers for digital copyright management information, the data representation of digital copyright management, and the authenticity verification mechanism of digital copyright management;

Step 25: Authenticate the parties involved in 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.

According to the above technical solution, the method steps of encrypting and decrypting data using the encryption and confirmation model include:

Step 31: Digital copyright registration 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 performs hash processing on the digital copyright content uploaded by the user.

Step 32: Send the hash value that passes the originality detection to the data center at the bottom of the client, and 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 method of the contract, parameter information, and the digital signature of the client;

Step 34: Encrypt the read data stream, and use a random key generator to generate a seed with 62 characters based on the uppercase and lowercase letters of the 26 English letters and the 10 numbers from 0 to 9 to perform encryption operations;

Step 35: Initialize a random vector to encrypt the read data stream, perform random obfuscation based on the composed seed, obtain a random combination of uppercase and lowercase English letters and numbers, select a fixed 32-bit string as a random code, and re-encode 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 to output the ciphertext stream.

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 center uses an open source alliance chain to store data in blocks as a public ledger, links the blocks into a chain structure in chronological order, and verifies and stores data through the block chain structure.

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

Digital copyright business process module, used for digital copyright business process operation management;

Smart contract execution module, which is used by the system to call smart contracts to execute the compiled digital copyright transaction process logic for review;

The data encryption and decryption management module is used to encrypt and decrypt the digital copyright transaction process data loaded into the data center using the encryption and confirmation model.

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

1. The digital copyright registration process driven by blockchain technology can be simpler and the registration cycle can be shortened. Compared with the traditional digital copyright registration process, the procedure can be truly reduced;

2. With the decentralized nature of blockchain technology, all information contained in each step of the management process from the generation to the circulation of digital copyright can be fully recorded. Under the influence of blockchain technology, digital copyright can be protected from the source of generation. During the circulation process, users can conduct each copyright transaction through smart contracts, which can gradually cultivate the public's standardized trading habits;

3. Since blockchain technology is tamper-proof, it can ensure that digital copyrights will not be infringed during the transaction process, thereby reducing the occurrence of infringements in the management process of dissemination, authorization and transfer of digital copyrights.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG1 is a flow chart of a digital copyright management method based on blockchain technology provided in Embodiment 1 of the present invention;

FIG2 is a schematic diagram of the module composition of a digital copyright management system based on blockchain technology provided in Embodiment 2 of the present invention.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Embodiment 1: FIG1 is a flow chart of a 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. The method can be executed by a digital copyright management system based on blockchain technology provided in this embodiment. As shown in FIG1 , the method specifically includes the following steps:

Step 1: Use open source consortium blockchain to provide technical support for the digital copyright affairs process;

In the embodiment of the present invention, based on the use requirements of digital copyright information protection and management authority control of the participants in digital copyright protection, a consortium blockchain involving various stakeholders is constructed, and digital publishing organizations, media platforms, copyright service organizations and government supervision departments are selected to be included in the consortium system in the internal structure of the digital copyright industry ecosystem. Based on their respective copyright protection demands, the digital copyright protection mechanism of the consortium blockchain is used to manage the digital copyright affairs process;

Exemplarily, the consortium chain manages the digital copyright registration transaction process for users as follows: when a digital copyright registrant has a need to register digital copyright, he/she registers and logs in to the system. After registration and login, the digital copyright registrant jumps to the registrant page, and the system executes the digital copyright registration function: through the request sent by the front-end page, the method in the copyright registration contract is called. The system generates a pair of public and private keys after the digital copyright registrant joins the test network. The account address generated by the public key is used as the registrant's identity in the network. The private key digitally signs the copyright registration information as the unique identifier of the copyright registration information. Other participating nodes can verify the authenticity of the identifier. After identity authentication, the relevant identity information is simultaneously written into the blockchain for identity certification. The visible object of the private identity information is set according to the situation to ensure that the identity of the digital copyright registrant is authentic.

Exemplarily, a digital copyright registrant generates a piece of copyright registration information based on the copyright number, author, work name, hash value of the work file, recording time and other information. According to the authenticity verification algorithm of the copyright registration, the transaction data and digital signature generated by the digital copyright registrant are sent to the blockchain network for verification. After the verification is passed, it is broadcast to the blockchain network to complete the data storage of the copyright registration information. The hash value of the registered work is calculated and the digital signature is stored in the remote server using an encryption algorithm. The work information is sent to the corresponding digital copyright service agency to decrypt the encrypted work with a key, perform digital copyright detection on the content similarity identification, and provide corresponding proof. The smart contract is executed according to the relevant results, and the hash value of the work, the digital watermark and the author's privacy information are registered on the chain as digital copyright information.

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;

In this embodiment, the method steps for executing the smart contract are:

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 identity to ensure 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 business logic of digital copyright transaction process management is specified in the smart contract, including the representation of participants in digital copyright management, the generation of trusted identifiers for digital copyright management information, the data representation of digital copyright management, and the authenticity verification mechanism of digital copyright management;

Step 25: Authenticate the parties involved in 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.

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 the execution is completed, the data is transmitted and saved in the back-end database;

In the embodiment of the present invention, the encryption and decryption method of the encryption and right confirmation model for data is:

Step 31: Digital copyright registration 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 performs hash processing on the digital copyright content uploaded by the user.

Step 32: Send the hash value that passes the originality detection to the data center at the bottom of the client, and 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 method of the contract, parameter information, and the digital signature of the client;

Step 34: Encrypt the read data stream, and use a random key generator to generate a seed with 62 characters based on the uppercase and lowercase letters of the 26 English letters and the 10 numbers from 0 to 9 to perform encryption operations;

Step 35: Initialize a random vector to encrypt the read data stream, perform random obfuscation based on the composed seed, obtain a random combination of uppercase and lowercase English letters and numbers, select a fixed 32-bit string as a random code, and re-encode 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 to output the ciphertext stream.

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 center uses an open source alliance chain to store data in blocks as a public ledger, links the blocks into a chain structure in chronological order, and verifies and stores data through the block chain structure.

Embodiment 2: Embodiment 2 of the present invention provides a digital copyright management system based on blockchain technology. FIG. 2 is a schematic diagram of the module composition of the digital copyright management system based on blockchain technology provided by Embodiment 2 of the present invention. As shown in FIG. 2 , the system includes:

Digital copyright business process module, used for digital copyright business process operation management;

Smart contract execution module, which is used by the system to call smart contracts to execute the compiled digital copyright transaction process logic for review;

The data encryption and decryption management module is used to encrypt and decrypt the digital copyright transaction process data loaded into the data center using the encryption and confirmation model.

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

Consortium chain building module, used to build consortium blockchains involving various stakeholders;

The digital copyright registration module is used to register digital copyrights through the alliance chain when the digital copyright registrant has the need to register digital copyrights;

The registration and chain module is used to register the hash value of the digital copyright work, the digital watermark and the author's privacy information as digital copyright information on the chain.

In some embodiments of the present invention, the smart contract execution module includes:

The identity verification module is used to digitally sign the copyright registration information being verified using the public key and the private key;

An execution rule definition module, used to define the execution rule as executable code;

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;

The alliance chain data storage module is used to store copyright registration data in the alliance chain.

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

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

The encryption and title confirmation model module is used to encrypt and decrypt the read data stream using the encryption and title confirmation model;

The ciphertext stream output module is used to generate random codes and space-time codes as encryption keys and output ciphertext streams.

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

Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. The digital copyright management method based on the block chain technology is characterized by comprising the following steps of: the method comprises the following steps:

Step one: carrying out technical support on the digital copyright transaction flow by adopting an open-source alliance chain;

step two: calling an intelligent contract to execute compiled digital copyright transaction flow logic to audit based on the digital copyright information of the registered uplink;

Step three: and after the digital copyright transaction flow data is loaded into the uploading data center, encrypting and decrypting the data by utilizing the encryption and authentication model, and transmitting the data and storing the data in a back-end database after the execution is finished.

2. The blockchain technology-based digital rights management method of claim 1, wherein: the step of building a federated blockchain involving stakeholders includes:

based on the use requirement of the digital copyright information protection and the management authority control of the participation main body in the digital copyright protection;

Constructing a alliance blockchain related to each stakeholder;

the digital publishing organization, the media platform, the copyright service organization and the government supervision department are selected to be incorporated into the alliance system in the internal structure of the digital copyright industry ecosystem;

Digital rights transaction flow management is performed using the digital rights protection mechanism of the alliance blockchain based on their respective rights protection requirements.

3. The blockchain technology-based digital rights management method of claim 2, wherein: the step of managing the digital copyright registration transaction flow of the alliance chain for the user comprises the following steps:

When the digital copyright registrant has the requirement of digital copyright registration, registering and logging in the system, and after logging in, jumping to a registrant page by the digital copyright registrant;

The system performs a digital rights registration function: invoking a method in a copyright registration contract through a request sent by a front-end page;

the system adds the digital copyright register into a test network to generate a pair of public and private keys, an account address generated by the public keys is used as an identity mark of the register in the network, the private keys carry out digital signature on copyright registration information to be used as a unique mark of the copyright registration information, and other participant nodes can verify the authenticity of the mark;

and writing related identity information into the blockchain to carry out identity storage after identity authentication synchronously, setting visible objects of privacy identity information according to conditions, and ensuring identity authenticity of the digital copyright registrant.

4. The blockchain technology-based digital rights management method of claim 3, wherein: the step of registering the digital copyright information for the uplink comprises the following steps:

The digital copyright registrant generates a piece of copyright registration information according to copyright number, author, work name, hash value of work file, recording time and other information;

According to the authenticity verification algorithm of the copyright registration, transaction data and a digital signature generated by a digital copyright registrant are sent to a blockchain network to wait for verification, and broadcast to the blockchain network after verification is passed, so that data storage of copyright registration information is completed;

Calculating a hash value of the work to be registered, carrying out digital signature by utilizing an encryption algorithm, storing the digital signature in a remote server, and sending the work information to a corresponding digital copyright service mechanism to decrypt the encrypted work through a key;

And carrying out digital copyright detection on the content similarity identification, providing corresponding evidence, executing intelligent contracts according to the related results, and taking the hash value of the work, the digital watermark and the privacy information of the author as digital copyright information for logging.

5. The blockchain technology-based digital rights management method of claim 4, wherein: the method for executing the intelligent contract comprises the following steps:

Step 21: after the auditing party joins the test network, a pair of public and private keys are generated, the account address generated by the public key is used as the identity of the auditing party in the network, the private key carries out digital signature on the audited copyright registration information, and other participant nodes can verify the authenticity of the identity, so that the identity of the auditing party is ensured to be real;

Step 22: compiling and generating a byte code file by utilizing an intelligent contract, deploying the file to a test network of an open-source alliance chain, defining an execution rule as an executable code, automatically executing corresponding logic when a preset execution condition is met, and storing transaction data to the alliance chain;

Step 23: synchronously dividing the authenticity verification of transaction data in the digital copyright management process into the authenticity verification of digital copyright registration information and the authenticity verification of digital copyright inquiry information;

Step 24: business logic for managing the digital rights transaction flow is specified in the intelligent contract, and comprises a representation of a participant of digital rights management, generation of a trusted identifier of digital rights management information, a data representation of digital rights management and an authenticity verification mechanism of digital rights management;

Step 25: and carrying out identity verification on the participant of the digital copyright management, carrying out trusted identification on the digital copyright registration information, carrying out authenticity verification on the digital copyright registration information, and finally storing the copyright registration data into a alliance chain.

6. The blockchain technology-based digital rights management method of claim 5, wherein: the method for encrypting and decrypting the data by using the encryption and authentication model comprises the following steps:

Step 31: the digital copyright registration user initiates a request for confirming the digital copyright content at the client, and after the request is received, the data center receiving the user request carries out hash processing on the digital copyright content uploaded by the user;

Step 32: transmitting the hash value which is detected through originality to a data center at the bottom layer of the client, and reading the digital copyright transaction flow in a file form into a data flow which can be used for encryption by the data center;

step 33: sending a transaction proposal to the blockchain network by calling the blockchain node, wherein the transaction proposal comprises information such as identification of a calling contract, a method of the contract, parameter information, a digital signature of a client and the like;

Step 34: encrypting the read data stream, and performing encryption operation by using a random key generator with the case of 26 English letters and 10 numbers of 0-9 as references to form seeds with sixty two characters in total;

Step 35: initializing a random vector to encrypt a read data stream, and carrying out random confusion based on composed seeds to obtain an arrangement combination of English letter case and digital disorder mixing, wherein a character string with a fixed 32-bit length is selected as a random code by an offset, and the random code is recoded in an utf-8 mode;

Step 36: re-encoding to obtain a 64 byte character string, seeding with the current time and the IP address, obtaining a unique space-time code by using MD5 hash algorithm, generating random code and space-time code as encryption key, and outputting ciphertext stream;

Step 37: after encryption execution is finished, the transaction proposal sends the information to other data centers which do not participate in consensus, the data center uses a block as a unit to store a public account book of data based on an open-source alliance chain, the blocks are linked into a chain structure according to time sequence, and the data and the stored data are verified through the block chain structure.

7. A digital rights management system that performs the blockchain technology-based digital rights management method of claim 1, characterized by: the system comprises:

The digital copyright transaction flow module is used for carrying out digital copyright transaction flow operation management;

the intelligent contract executing module is used for calling the intelligent contract to execute the compiled digital copyright transaction flow logic for auditing;

and the data encryption and decryption management module is used for encrypting and decrypting the digital copyright transaction flow data loaded into the data center by utilizing the encryption and validation model.

8. The digital rights management system of claim 7, wherein: the digital copyright transaction flow module comprises:

The alliance chain construction module is used for constructing an alliance block chain related to each stakeholder;

The digital copyright registration module is used for registering through the alliance chain when the digital copyright registrant has the requirement of registering the digital copyright;

The login uplink module is used for taking the hash value of the digital copyright work, the digital watermark and the privacy information of the author as the digital copyright information login uplink.

9. The digital rights management system of claim 8, wherein: the smart contract execution module includes:

the identity identification auditing module is used for digitally signing the audited copyright registration information by utilizing the public key and the private key;

An execution rule definition module for defining an execution rule as executable code;

The authenticity verification mechanism module is used for dividing the authenticity verification of the transaction data in the digital copyright management process into the authenticity verification of the digital copyright registration information and the query information;

and the alliance chain data storage module is used for storing the copyright registered data into the alliance chain.

10. The digital rights management system of claim 9, wherein: the data encryption and decryption management module comprises:

the process data loading and uploading module is used for loading the digital copyright transaction process data into an uploading data center;

the encryption and authentication model module is used for encrypting and decrypting the read data stream by utilizing the encryption and authentication model;

and the ciphertext stream output module is used for taking the generated random code and the space-time code as encryption keys and outputting ciphertext streams.