A copyright protection method and system based on blockchain and timestamp technology

Abstract

The present invention relates to a copyright protection method and system based on blockchain and timestamp technology. The copyright protection method includes: the author uploads the electronic file of the work and registers the work; the public key and private key are assigned to the electronic file of the work and encrypted with a digital watermark; the encrypted electronic file of the work is authenticated with a timestamp, and the electronic file of the work encrypted with a digital watermark, the creation time, geographical location, person, and the timestamp authentication file are used to form the work identity description information, and the digital authentication information of the work is generated by the public key through a hash function; the digital authentication information of the work is stored in the blockchain. The present invention can improve the traceability and anti-counterfeiting effect, security, non-tamperability and judicial efficiency of the work.

Description

Technical Field

[0001] The present invention relates to the field of commodity anti-counterfeiting, and in particular to a copyright protection method and system based on blockchain and timestamp technology. Background Art

[0002] At present, the commodity anti-counterfeiting and traceability systems on the market have become mature, and the functions they have realized are becoming more and more perfect. When shopping, consumers can use QR codes, electronic tags, AR and other technologies to query commodity information and verify anti-counterfeiting. The collection of commodity traceability information currently adopts uploading pictures, texts, videos, etc. through QR code scanning and other methods. This kind of traceability information login is the mainstream method at present, but there are also certain problems. The biggest problem is whether the information is true. When consumers raise questions, they often encounter consumers questioning the authenticity of their traceability information. The reason for this phenomenon is that some counterfeiters upload some false pictures and texts to build a complete set of false traceability processes. This is very simple from a technical point of view, and consumers cannot identify it. It is precisely because of this kind of situation that the companies that originally wanted to do a good job in traceability and anti-counterfeiting systems also face the problem of lack of effective evidence after being questioned; Therefore, the problem with the current traceability and anti-counterfeiting system is that the authenticity of its information cannot be effectively guaranteed, and it cannot play a certain role in legal proof, and lacks a certain persuasiveness.

[0003] The patent application number 201910081194.5 discloses a tobacco anti-counterfeiting traceability method and system based on blockchain, which stores the production and circulation information of cigarettes in the blockchain and produces corresponding identification. After the user terminal scans the identification, it sends an identification request, and according to the request, the cigarette production and circulation information is fed back to the user terminal, so that the user can identify the authenticity of the cigarettes. This invention uses blockchain technology to store data from all links of cigarette production and circulation, so that the data in each link cannot be tampered with, and realizes the anti-counterfeiting traceability of cigarettes. However, blockchain technology cannot solve the problem of credibility. The electronic evidence provided by the anti-counterfeiting traceability system using blockchain technology is often not accepted by judicial organs. Even if the electronic evidence is identified by notarization and judicial appraisal, it greatly increases the cost of evidence and reduces judicial efficiency. Summary of the invention

[0004] In order to overcome the defects and shortcomings in the prior art, the present invention discloses a copyright protection method and system based on blockchain and timestamp technology.

[0005] The present invention is achieved through the following technical solutions:

[0006] The first aspect of the present invention provides a copyright protection method based on blockchain and timestamp technology, including a work registration anti-counterfeiting and traceability platform and a platform online mall. The work registration anti-counterfeiting and traceability platform uses digital technology to register the work for anti-counterfeiting, and the platform online mall sells the work and verifies its authenticity.

[0007] The registration and anti-counterfeiting steps are as follows:

[0008] S1: Work upload and registration: The author creates and uploads the electronic file of the work and registers the work;

[0009] S2: assigning a public key and a private key to the electronic file of the work;

[0010] S3: Encrypting the electronic file of the work with a digital watermark;

[0011] S4: The encrypted electronic file of the work is timestamped and authenticated, and the electronic file of the work encrypted with a digital watermark, the creation time, geographic location, person, and timestamp authentication file are combined into work identity description information, and the public key is used to generate digital authentication information of the work through a hash function.

[0012] S5: storing the digital authentication information of the work in the blockchain, recording the transaction, and generating an electronic key QR code for all the digital information of the work;

[0013] The steps for selling and verifying authenticity are as follows:

[0014] S6: The consumer purchases the work in the online mall of the platform, obtains the work private key from the author after payment, and obtains the electronic key QR code from the work registration anti-counterfeiting and traceability platform;

[0015] S7: Scan the electronic key QR code and provide the work private key to download the work ID QR code and the work electronic file;

[0016] S8: Scan the QR code of the ID card of the work to obtain the digital art information of the work, and further obtain the timestamp authentication file, the creation process, and the story behind the work;

[0017] S9: Verify authenticity through the timestamp authentication server;

[0018] S10: The consumer uploads the downloaded electronic file of the work to the work registration anti-counterfeiting and traceability platform to further verify the authenticity.

[0019] Furthermore, the work uploading process includes uploading the work, time, geographical location, creative theme, author profile and the story behind the work.

[0020] Furthermore, the work registration anti-counterfeiting and traceability platform extracts image features and compares them with works in the work database to check for duplication. Works that have not been registered will proceed to the next step; works that have been registered will refuse to be registered.

[0021] Furthermore, the image features include shape features, color features and texture features in the work image.

[0022] Furthermore, the public key and the private key are allocated according to Shamir's secret sharing theory.

[0023] Furthermore, the timestamp authentication file includes an electronic file of the work that has been timestamped, a timestamp authentication file, and a timestamp authentication certificate.

[0024] Furthermore, the authenticity verification method in step S10 is that the work registration anti-counterfeiting and traceability platform extracts the digital watermark and image features in the electronic file of the work, and compares them with the digital watermark and image features in the image feature database in the work registration anti-counterfeiting and traceability platform. If the comparison passes, it is indicated as an authentic product, and if it fails, it is indicated as a counterfeit.

[0025] The second aspect of the present invention provides a copyright protection system based on blockchain and timestamp technology, using the above-mentioned copyright protection method based on blockchain and timestamp technology.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1) By extracting image features from the works and automatically comparing them with the image feature database, automatic duplication checking of works is achieved to avoid duplicate registration.

[0028] 2) The electronic files of the works are encrypted with digital watermarks before being traded, timestamped and stored on the blockchain, effectively protecting the rights of the authors.

[0029] 3) Solve the credibility problem of traceability and anti-counterfeiting through timestamp authentication.

[0030] 4) Combine blockchain technology to solve data security issues and ensure that transaction information cannot be tampered with.

[0031] 5) When consumers download the electronic key QR code and electronic file of the work, they need to provide the key obtained from the author, which effectively prevents the illegal acquisition of the electronic QR code and electronic file of the work. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 : A schematic diagram of the structure of the copyright protection system based on blockchain and timestamp technology according to the present invention;

[0033] Figure 2: Schematic diagram of the work registration and anti-counterfeiting process of Example 1 of the copyright protection method based on blockchain and timestamp technology of the present invention;

[0034] Figure 3 : Schematic diagram of the work sales and authenticity verification process of Example 1 of the copyright protection method based on blockchain and timestamp technology of the present invention. DETAILED DESCRIPTION

[0035] The present invention provides a copyright protection method and system based on blockchain and timestamp technology. The method adopts digital watermark, secret shared key, trusted timestamp, blockchain technology, image feature extraction technology, and is used for full-process traceability and anti-counterfeiting of works.

[0036] The author of the work can enter the platform online mall by uploading the work and indicating the price information. Everyone has his own store, which is convenient for work authorization. Consumers can browse and query the copyright ownership and transaction information of the work through the platform online mall, and then pay for the right to use the work according to their needs. The content and related information of the work uploaded by the author to the platform online mall cannot be tampered with.

[0037] Example 1

[0038] See attached Figure 1 The embodiment of the present invention provides a copyright protection method based on blockchain and timestamp technology, including a work registration anti-counterfeiting and traceability platform and a platform online mall. The work registration anti-counterfeiting and traceability platform includes an image feature database, a key distribution management module, a timestamp authentication module, a blockchain evidence storage module, a digital watermark encryption module and a server storage module.

[0039] The platform's online mall includes a product management system (such as product addition, product management and category management functions), an order management system, a product search and comparison module and a work authenticity identification module.

[0040] The copyright protection method based on blockchain and timestamp technology provided in this embodiment includes:

[0041] S1: Upload and register works: After the creator has created the work, the corresponding creation time, location, characters, images, videos, etc. will be uploaded to the work registration anti-counterfeiting traceability platform. The work registration anti-counterfeiting traceability platform will extract image features from the submitted work. Image feature extraction methods include but are not limited to shape features such as Fourier shape descriptors, wavelet contour descriptors, etc., texture features such as autoregressive texture models, etc., and color features such as color histograms, color aggregation vectors, etc. The work registration anti-counterfeiting traceability platform has an image feature database of works. The image features of each submitted work are compared with the image features in the image feature database. If the image feature database exists, it means that the work has been registered on the work registration anti-counterfeiting traceability platform. Then, the work will not be registered on the work registration anti-counterfeiting traceability platform, and the work registration process will be exited. If the image feature database does not exist, it means that the work has not been registered on the work registration anti-counterfeiting traceability platform, then the work will be registered on the work registration anti-counterfeiting traceability platform, and the image features of the work will be added to the image feature database.

[0042] S2: Assign a public key and a private key to the work. This embodiment adopts Shamir's secret sharing theory to divide the secret shared key K into n shared shares, n≥2. Among them, t-1 (2≤t≤n) shared shares are kept in the work registration anti-counterfeiting and traceability platform as public keys, and 1 shared share is kept at the author as a private key. Only any t (2≤t≤n) or more shared shares between the author and the work registration anti-counterfeiting and traceability platform can restore the secret shared key K. Assigning a key to each work, rather than assigning a unified key to the author, can effectively prevent the leakage of a certain key without affecting other works.

[0043] S3: Add a digital watermark to the work. The watermark information is the creator's name and the geographic location where the work was created. The watermark information is invisible. The digital watermark is the identity card of the work. The work encrypted by the digital watermark can effectively prevent the work from being stolen. If the author permits the use of the work, the work obtained by the licensee will also have a digital watermark. The digital watermark is invisible. The licensee does not know the encryption algorithm of the digital watermark, nor does he know the location of the watermark in the work, and cannot remove the digital watermark.

[0044] S4: The electronic file of the work encrypted with the digital watermark is timestamped through the timestamp authentication module. The timestamp authentication module uploads the electronic file of the work encrypted with the digital watermark to the timestamp server. The timestamp server used in this embodiment is a server provided by the Joint Trust Timestamp Service Center. The Joint Trust Timestamp Service Center provides a trusted timestamp that complies with the RFC3161 standard to the outside world and opens an API interface to the outside world. Trusted timestamp authentication is performed on electronic data files anytime and anywhere through API interfaces, web pages, applications, mobile clients, etc. After processing the electronic file of the work, the timestamp server generates a trusted timestamp certificate (TSA format) and a trusted timestamp authentication certificate (PDF format), and transmits the trusted timestamp certificate and the trusted timestamp authentication certificate back to the timestamp authentication module in the work registration anti-counterfeiting and traceability platform. The timestamp authentication module saves the timestamp-authenticated electronic file of the work encrypted with the digital watermark, the trusted timestamp certificate and the trusted timestamp authentication certificate.

[0045] The work registration anti-counterfeiting and traceability platform uses the digital watermark to encrypt the electronic file of the work, the creation time, geographic location, person, and the timestamp generated by this timestamp authentication, including a trusted timestamp certificate and a trusted timestamp authentication certificate, to form the work identity description information, and uses the public key in step S2 to generate the digital authentication information of the work through a hash function.

[0046] S5: The blockchain evidence storage module uploads the digital authentication information of the work to the blockchain network and generates a transaction record for evidence storage.

[0047] Blockchain is a new application model of computer technologies such as distributed data storage, peer-to-peer transmission, consensus mechanism, encryption algorithm, etc. Blockchain is essentially a decentralized database, a string of data blocks generated by cryptographic methods. Each data block contains a batch of transaction information, so it can be used to verify the validity of its information. The role of blockchain technology is that the information of the entire product process is stored in the form of blockchain, which can solve the problem of data security and non-tamperability.

[0048] The work registration anti-counterfeiting and traceability platform generates an electronic key QR code based on the work's digital authentication information, key and blockchain transaction records.

[0049] The blockchain evidence storage module saves the digital authentication information of the work. Once the work registration process is completed, the work can be published on the platform's online mall for consumers to purchase.

[0050] The steps for selling and verifying authenticity are as follows:

[0051] S6: Consumers browse works through web pages, apps, mini-programs, etc., place orders to purchase works of interest, and after payment, obtain the work private key from the author and the electronic key QR code from the work registration anti-counterfeiting traceability platform;

[0052] S7: Scan the electronic key QR code and provide the work private key to download and obtain the work ID QR code and the electronic file of the work encrypted with the digital watermark.

[0053] S8: Scan the QR code of the ID card of the work to obtain digital authentication information, and obtain the timestamp authentication file, the creation process, the story behind the work, etc. through the digital authentication information.

[0054] Consumers can scan the electronic key QR code with their mobile phones. After the work registration anti-counterfeiting and traceability platform prompts them to enter the work's private key, they can obtain the work's ID QR code. By downloading and scanning the work's ID QR code, they can further obtain the work's digital authentication information. The platform's online mall forwards the work's digital authentication information to the work's anti-counterfeiting and traceability platform. The work's anti-counterfeiting and traceability platform calculates the key provided by the consumer and the work's digital authentication information through a hash function to obtain the work's identity description information, including the digital watermark-encrypted electronic file of the work, the creation time, geographic location, person, trusted timestamp certificate, and trusted timestamp authentication certificate, and transmits them to the platform's online mall and consumers. Consumers can learn about the author's profile, the creation story behind it, and the geographic location of the creation.

[0055] S9: The consumer chooses to authenticate the authenticity through the timestamp authentication server. The platform online mall uses the electronic file of the work as a traceability file, adds a trusted timestamp certificate and a trusted timestamp authentication certificate, and sends it to the timestamp authentication server for authentication. If the timestamp authentication server passes the authentication, the platform online mall prompts the consumer that the identity of the work is true. If the timestamp authentication server fails the authentication, the platform online mall prompts the consumer that the identity of the work is false.

[0056] S10: Consumers can further upload the downloaded electronic files of the works to the Works Registration Anti-Counterfeiting Traceability Platform for authenticity verification through the APP, mini-program or HTML / HTML5 page provided by the platform's online mall. Consumers take photos or upload the electronic files of the works they have obtained, and the Works Registration Anti-Counterfeiting Traceability Platform will automatically obtain the digital watermarks and image features in the electronic files of the works, and automatically compare them with the digital watermarks and image features saved by the Works Registration Anti-Counterfeiting Traceability Platform. If the comparison is successful, the consumer will be prompted that the work is authentic; if the comparison is unsuccessful, the consumer will be prompted that the work is a counterfeit.

[0057] Beneficial effects of the present invention:

[0058] 1) By extracting image features from the works and automatically comparing them with the image feature database, automatic duplication checking of works is achieved to avoid duplicate registration.

[0059] 2) The electronic files of the works are encrypted with digital watermarks before being traded, timestamped and stored on the blockchain, effectively protecting the rights of the author. Since the digital watermark is invisible, if the work is illegally lost, the illegal user cannot remove the digital watermark, and the author of the work can protect his rights through the digital watermark.

[0060] 3) Solve the credibility problem of traceability and anti-counterfeiting through timestamp certification. A trusted timestamp is an electronic certificate issued by the Joint Trust Timestamp Service Center to prove the existence time and content of electronic data files remain intact and have not been changed. It is currently recognized by the world as the most convenient, quick and effective means to ensure the originality and content integrity of electronic data, and solves the complex problem of determining the legal effect of electronic data. Trusted timestamps have been recognized as key evidence in a large number of judicial trials. Electronic data files certified by trusted timestamps can be identified without notarization and judicial appraisal, which has played a positive role in reducing the cost of evidence and improving judicial efficiency.

[0061] 4) Combine blockchain technology to solve data security issues and ensure that transaction information cannot be tampered with.

[0062] 5) When consumers download the electronic key QR code and electronic file of the work, they need to provide the key obtained from the author, which effectively prevents the illegal acquisition of the electronic QR code and electronic file of the work.

[0063] Example 2

[0064] This embodiment provides a copyright protection system based on blockchain and timestamp technology to implement the above-mentioned copyright protection method based on blockchain and timestamp technology.

[0065] Obviously, the above embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, various changes, modifications, substitutions and improvements made to these embodiments by ordinary technicians in the field without creative work should be included in the protection scope of the present invention.

Claims

1. A copyright protection method based on blockchain and timestamp technology, including a work registration anti-counterfeiting and traceability platform and a platform online mall, wherein the work registration anti-counterfeiting and traceability platform uses digital technology to register the work for anti-counterfeiting, and the platform online mall sells the work and verifies its authenticity, characterized in that: The registration and anti-counterfeiting steps are as follows: S1: Work upload and registration: The author creates and uploads the electronic file of the work and registers the work; S2: assigning a public key and a private key to the electronic file of the work, wherein the public key and the private key are assigned according to Shamir's secret sharing theory; dividing the secret sharing key K into n shares, n≥2, wherein t-1 (2≤t≤n) shares are kept in the work registration anti-counterfeiting and traceability platform as public keys, and 1 share is kept at the author as a private key. Only any t (2≤t≤n) or more shares of the author's and the work registration anti-counterfeiting and traceability platform's shares can restore the secret sharing key K. A key is assigned to each work, rather than assigning a unified key to the author. S3: Encrypt the electronic file of the work with a digital watermark; add a digital watermark to the work, the watermark information is the name of the creator and the geographical location where the work was created, and the watermark information is invisible. The digital watermark is the identity card of the work. If the author permits the use of the work, the work obtained by the licensed user will also have a digital watermark, and the digital watermark is invisible; S4: The encrypted electronic file of the work is timestamped, and the electronic file of the work encrypted with the digital watermark, the creation time, the geographical location, the person, and the timestamp authentication file are combined into the work identity description information, and the public key is used to generate the digital authentication information of the work through the hash function; S5: The digital authentication information of the work is stored in the blockchain, and the transaction is recorded. All the digital information, keys and blockchain transaction records of the work generate an electronic key QR code; the blockchain evidence storage module saves the digital authentication information of the work, and the work registration process is completed. The work can be published on the platform online mall for consumers to purchase; The steps for selling and verifying authenticity are as follows: S6: The consumer purchases the work in the online mall of the platform, obtains the work private key from the author after payment, and obtains the electronic key QR code from the work registration anti-counterfeiting and traceability platform; S7: Scan the electronic key QR code and provide the work private key to download the work ID QR code and the work electronic file; S8: Scan the QR code of the ID card of the work to obtain the digital art information of the work, and further obtain the timestamp authentication file, the creation process, and the story behind the work; S9: The platform online store uses the electronic file of the work as a traceability file, adds a trusted timestamp certificate and a trusted timestamp authentication certificate, and sends it to the timestamp authentication server for authenticity verification; S10: The consumer uploads the downloaded electronic file of the work to the work registration anti-counterfeiting and traceability platform through the APP, mini-program or HTML / HTML5 page provided by the platform's online mall to further verify the authenticity.

2. The copyright protection method based on blockchain and timestamp technology according to claim 1 is characterized in that: The work uploading process includes uploading the work, time, geographical location, creative theme, author profile and the story behind the work.

3. The copyright protection method based on blockchain and timestamp technology according to claim 1 is characterized in that: The work registration anti-counterfeiting and traceability platform extracts image features and compares them with works in the work database to check for duplication. Works that have not been registered will proceed to the next step; works that have been registered will refuse to be registered.

4. The copyright protection method based on blockchain and timestamp technology according to claim 3 is characterized in that: The image features include shape features, color features and texture features in the work image.

5. The copyright protection method based on blockchain and timestamp technology according to claim 1 is characterized in that: The timestamp authentication file includes an electronic file of the work that has been timestamp authenticated, a timestamp authentication file and a timestamp authentication certificate.

6. The copyright protection method based on blockchain and timestamp technology according to claim 1 is characterized in that The authenticity verification method in step S10 is that the work registration anti-counterfeiting and traceability platform extracts the digital watermark and image features in the electronic file of the work, and compares them with the digital watermark and image features in the image feature database in the work registration anti-counterfeiting and traceability platform. If the comparison passes, it is indicated as an authentic product, and if it fails, it is indicated as a counterfeit product.

7. A copyright protection system based on blockchain and timestamp technology, characterized in that: A copyright protection method based on blockchain and timestamp technology using any one of claims 1-6.

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