Right management device, system, method and program

Abstract

To provide a right management device which can manage information on a right.SOLUTION: Right management means 81 imparts secondary copyright of a primary content created by a primary creator to a secondary creator, on the basis of a right imparting instruction imparted to the secondary creator. Calculation means 82 calculates a contribution ratio indicating a degree of improving evaluation of the first content by a second content, on the basis of evaluation information indicating evaluation to the secondary content created by the secondary creator having the secondary copyright. Payment amount determination means 83 determines an amount of payment to the primary creator and the secondary creator having the secondary copyright, on the basis of the contribution ratio.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a rights management device, a rights management system, a rights management method, and a rights management program that manage information related to rights. [Background technology]

[0002] Generally, a creator is granted copyright at the time of creating content, and the creator has ownership of the content he or she created. Furthermore, a creator can grant a license to a creator who creates a derivative work based on the content he or she created, based on the copyright, ownership, and other rights he or she owns. In the following explanation, a creator who creates content is referred to as a primary creator, and a creator who creates a derivative work based on the content created by the primary creator is referred to as a secondary creator. Examples of secondary creators include writers of derivative works and producers of products related to the work.

[0003] Secondary creators can use the derivative content to carry out activities, and primary creators can earn profits based on the activities of secondary creators. For example, Patent Document 1 describes an information processing device that can distribute profits in content transactions. The information processing device described in Patent Document 1 distributes profits to content holders and service providers from the usage fees collected based on profit distribution predetermined in the transaction terms. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7132498 Summary of the Invention [Problem to be solved by the invention]

[0005] The value of created content may change depending on the way the content is used or marketed. In other words, even if profit distribution according to the rights to be utilized is determined in advance, as in the information processing device described in Patent Document 1, the profit distribution does not necessarily reflect the contribution of each creator. Therefore, it is preferable to be able to manage the rights to be utilized based on the created content according to the contribution of the creator.

[0006] Therefore, an object of the present disclosure is to provide a rights management device, a rights management system, a rights management method, and a rights management program capable of managing information related to rights. [Means for solving the problem]

[0007] The rights management device according to the present disclosure is characterized in that it comprises a rights management means for granting secondary creation rights to a secondary creator based on a rights granting instruction to grant the secondary creator secondary creation rights for a first content created by the primary creator, a calculation means for calculating a contribution rate indicating the degree to which the second content improves the evaluation of the first content based on evaluation information indicating the evaluation of the second content created by the secondary creator who holds the secondary creation rights, and a payment amount determination means for determining an amount to be paid to the primary creator and the secondary creator who holds the secondary creation rights based on the contribution rate.

[0008] The rights management system according to the present disclosure comprises a node participating in a blockchain network and a terminal device connected to the node, the terminal device including an instruction means for issuing a rights granting instruction to the terminal device to grant secondary creators derivative creation rights for first content created by the primary creator, and the node is characterized by comprising a rights management means for granting secondary creation rights to the secondary creator based on the rights granting instruction, a calculation means for calculating a contribution rate indicating the degree to which the second content improves the evaluation of the first content based on evaluation information indicating an evaluation of second content created by the secondary creator who holds the derivative creation rights, and a payment amount determination means for determining an amount to be paid to the primary creator and the secondary creator who holds the derivative creation rights based on the contribution rate.

[0009] The rights management method according to the present disclosure is characterized in that a computer grants secondary creation rights to a secondary creator for a first content created by a primary creator based on a rights granting instruction to grant the secondary creator the secondary creation rights for the first content created by the primary creator, the computer calculates a contribution rate indicating the degree to which the second content improves the evaluation of the first content based on evaluation information indicating the evaluation of the second content created by the secondary creator who holds the secondary creation rights, and the computer determines payment amounts to the primary creator and the secondary creator who holds the secondary creation rights based on the contribution rate.

[0010] The rights management program according to the present disclosure is characterized in that it causes a computer to execute a rights management process for granting secondary creation rights to a secondary creator for a first content created by a primary creator based on a rights granting instruction to grant the secondary creator the secondary creation rights for the first content created by the primary creator, a calculation process for calculating a contribution rate indicating the degree to which the second content improves the evaluation of the first content based on evaluation information indicating the evaluation of the second content created by the secondary creator who holds the secondary creation rights, and a payment amount determination process for determining the amount to be paid to the primary creator and the secondary creator who holds the secondary creation rights based on the contribution rate. Effect of the Invention

[0011] According to the present invention, information regarding rights can be managed. [Brief description of the drawings]

[0012] [Figure 1] 1 is a block diagram showing a configuration example of an embodiment of a rights management system according to the present disclosure. [Diagram 2] FIG. 11 is an explanatory diagram showing an example of a process for calculating a contribution rate and a damage rate. [Diagram 3] 11 is a flowchart showing an example of the operation of a rights management system. [Figure 4] 1 is a block diagram showing an overview of a rights management device according to the present disclosure; [Diagram 5] FIG. 1 is a block diagram illustrating an overview of a rights management system according to the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] First, we will explain the market where transactions are conducted through content created by creators (hereinafter referred to as the creator market). Customers of the creator market are, for example, creators and content production (distribution) companies. For example, media / art creators include manga artists, writers, illustrators, animators, musicians, avatars, worlds, etc.

[0014] Even if these creators study at vocational schools and other institutions until they graduate, there is no guarantee that they will be able to find work, and it is also difficult for them to sell the content they create on their own. Specifically, it is difficult for individual content creators before they are employed to manage and buy and sell the ownership of their content and the method of returning profits to the creators, and it is also difficult to disseminate their content through mass communication.

[0015] Here, we define original content creators in the creator market as "primary creators." Primary creators are people who create new content based on original ideas and concepts, and include manga artists, writers, illustrators, animators, musicians, and computer programmers. We also define people who create new content or works based on original content created by primary creators as "secondary creators." Secondary creators are people who create new value by reusing or arranging original content.

[0016] In a typical creator market, it is difficult to manage clear rules regarding rights and compensation between primary and secondary creators. In such a situation, it is difficult for primary creators to receive sufficient compensation, and the incentive for secondary creators to continue their activities is also reduced.

[0017] A more specific issue is that in general creator markets, the distribution of rights and remuneration between primary and secondary creators is often unclear. In such cases, there is no guarantee of appropriate remuneration for primary creators, which may reduce the incentive for creative activities.

[0018] There is also the problem that it is difficult to clearly evaluate the relationship between derivative works and primary works and the brand value. Furthermore, the unclear distribution of rewards affects the relationship of trust between primary and secondary creators, and may become a cause of hindrance to the development of creative activities as a whole.

[0019] In view of this, the present disclosure describes a platform that allows even creators who are not familiar with rights management to manage the rights of their content by themselves. This enables, for example, creators such as those described above to trade in mass communication. Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings.

[0020] Fig. 1 is a block diagram showing an example of the configuration of an embodiment of a rights management system according to the present disclosure. The rights management system 1 shown in Fig. 1 includes a node 100 and a terminal device 200 connected to the node 100 via a communication network. The node 100 according to the present disclosure can be called a rights management device because it manages various information based on the rights held by creators.

[0021] In addition, in this embodiment, the node 100 is a device that participates in a blockchain network. The form of the blockchain assumed in this embodiment is arbitrary, and may be, for example, a public blockchain, a private blockchain, or a consortium blockchain. Note that the node 100 does not necessarily have to participate in the blockchain network. However, it is more preferable for the node 100 to participate in the blockchain network, since various effects of the blockchain technology can be obtained.

[0022] The terminal device 200 is a device used by the creator when performing various processes. The terminal device 200 may take any form, and may be, for example, a tablet terminal such as a smartphone. The terminal device 200 includes a control unit 210.

[0023] The control unit 210 controls various processes performed by the terminal device 200. In this embodiment, the control unit 210 issues an instruction (hereinafter referred to as a right granting instruction) to the node 100 in response to an instruction from the primary creator to grant the secondary creator the right (hereinafter referred to as a derivative creation right) to create derivative works of the content (hereinafter referred to as a first content) created by the primary creator.

[0024] In this embodiment, derivative creation rights are granted to secondary creators using NFTs (Non-Fungible Tokens) created based on the blockchain used. Hereinafter, NFTs granted in this manner may be referred to as derivative creation rights NFTs. More specifically, a derivative creation rights NFT is issued on the blockchain, and the owner is designated as the secondary creator, thereby granting the derivative creation rights to the secondary creator. By managing rights using such derivative creation rights NFTs, it is possible to ensure uniqueness while suppressing tampering with records of owners, etc.

[0025] The control unit 210 generates a transaction indicating an instruction to grant rights according to the form of the blockchain used, and transmits the generated transaction as a request to the blockchain network (more specifically, the node 100) to record it in the blockchain (more specifically, the storage unit 110 of the node 100 described later). Note that methods of generating transactions and methods of recording them in the blockchain are widely known, and detailed explanations will be omitted here.

[0026] The node 100 includes a storage unit 110 , an input unit 120 , a rights management unit 130 , a usage status management unit 140 , an evaluation information management unit 150 , a calculation unit 160 , a payment amount determination unit 170 , and a distribution unit 180 .

[0027] The input unit 120, the rights management unit 130, the usage status management unit 140, the evaluation information management unit 150, the calculation unit 160, the payment amount determination unit 170, and the distribution unit 180 are realized by a computer processor (e.g., a CPU (Central Processing Unit), GPU (Graphics Processing Unit)) that operates according to a program (rights management program).

[0028] For example, the program may be stored in memory unit 110 of node 100, and the processor may read the program and operate as input unit 120, rights management unit 130, usage status management unit 140, evaluation information management unit 150, calculation unit 160, payment amount determination unit 170, and distribution unit 180 in accordance with the program.

[0029] In this embodiment, the functions of the input unit 120, the rights management unit 130, the usage status management unit 140, the evaluation information management unit 150, the calculation unit 160, the payment amount determination unit 170, and the distribution unit 180 are realized based on the smart contract mechanism in the blockchain. That is, by using the smart contract mechanism, when a specific condition is satisfied, each predetermined function is executed on the blockchain.

[0030] For example, NFT transactions use the smart contract mechanism, so when an NFT is traded, the smart contract function automatically rewrites the owner of the NFT on the blockchain at the same time as the NFT is handed over.

[0031] When some or all of the components of the node 100 are realized by a plurality of information processing devices, circuits, etc., the plurality of information processing devices, circuits, etc. may be centrally arranged or distributed. For example, the information processing devices, circuits, etc. may be realized as a client-server system, a cloud computing system, etc., in a form in which each is connected via a communication network.

[0032] The storage unit 110 stores various types of information used when the node 100 performs processing. The storage unit 110 also stores various transactions managed according to the form of the blockchain. The storage unit 110 is realized by, for example, a magnetic disk or the like.

[0033] When the input unit 120 receives an input of a transaction, it records the received transaction in the storage unit 110. Note that the method of storing a received transaction in a block and the method of propagating the block between nodes are widely known in the technology of blockchain networks, and therefore a detailed description thereof will be omitted here.

[0034] When the rights management unit 130 receives a rights granting instruction from the terminal device 200, it issues a derivative creation right NFT with the secondary creator as the owner. In addition to information identifying the secondary creator who is the owner, the derivative creation right NFT may also include a contribution rate, a loss rate, a term of the derivative creation right, and various other attributes, which will be described later.

[0035] In addition, the rights management unit 130 invalidates the derivative creation right when the loss rate calculated by the calculation unit 160 (described later) satisfies a predetermined condition. The rights management unit 130 may delete the derivative creation right NFT itself, or may change the owner of the derivative creation right NFT.

[0036] The usage status management unit 140 manages the usage status of content based on the secondary creator's secondary creation rights (hereinafter referred to as secondary content). Specifically, the usage status management unit 140 records the usage status in the storage unit 110. The secondary content is based on the secondary creation rights, and can be said to be content officially recognized by the primary creator. The content of the secondary content is arbitrary, and may be the same as the content of the primary content, or may be content newly created by the secondary creator. The usage status indicates any situation in which various actions using the secondary content have been performed, such as transfer, exhibition, and lending.

[0037] A specific example of the usage situation is a situation where a secondary creator sells secondary content to a consumer. The sale of secondary content may be performed using a smart contract function. When a transaction is performed according to predefined rules or contracts, the usage situation management unit 140 may store the transaction details (transaction record, etc.) in the storage unit 110.

[0038] The evaluation information management unit 150 manages information indicating evaluations of the second content by users related to the second content (hereinafter, referred to as evaluation information). Specifically, the evaluation information management unit 150 accepts evaluation information of the second content by evaluators and stores it in the storage unit 110. Since personal information of the evaluator does not necessarily need to be identified, the ID of the evaluator may be, for example, a wallet that holds the NFT.

[0039] The evaluation information management unit 150 may use, for example, a voting algorithm implemented in a smart contract to accept votes from evaluators and use the contents of the votes as evaluation information. Note that the form of acceptance is not limited to voting, and may be, for example, a questionnaire.

[0040] The target evaluators may be determined in advance. The evaluators may be, for example, users who have actually used the second content, or users in a community who are interested in the first content or the second content. The content of the evaluation may be any content that allows the evaluation of the second content to be recognized, and may be expressed, for example, as a binary value of "good / bad" or as a score (percentage).

[0041] Furthermore, the content of the evaluation is not limited to numerically quantified information, and may be text information such as evaluator comments. In this case, the evaluation information may be created by determining the content of the evaluation from the input text information using text mining technology or a trained model that has learned the likes and dislikes of evaluations based on text. If a mechanism for creating such evaluation information is realized by a smart constructor, the legitimacy of the evaluation information creation process can also be guaranteed.

[0042] The calculation unit 160 calculates a contribution rate indicating the degree to which the second content improves the evaluation of the first content based on the evaluation information. Furthermore, the calculation unit 160 calculates a damage rate indicating the degree to which the second content lowers the evaluation of the first content based on the evaluation information.

[0043] The evaluation information is information that represents an evaluation of the second content. However, if the evaluation of the second content is increased as a result, it is considered that the evaluation of the first content that was the basis for creating the second content has been contributed to, and if the evaluation of the second content is decreased, it is considered that the evaluation of the first content has also been damaged. Therefore, in this embodiment, the evaluation information is treated as being equivalent to the evaluation of the first content.

[0044] The calculation unit 160 may calculate the contribution rate and the loss rate at the timing of distributing the payment amount to the creators, which will be described later. The method by which the calculation unit 160 calculates the contribution rate and the loss rate is not particularly limited. When the evaluation information by each evaluator is expressed as a percentage of the contribution rate and the loss rate, for example, the calculation unit 160 may calculate the average value of the evaluation information (specifically, the contribution rate and the loss rate included in the evaluation information of each evaluator) to calculate the contribution rate and the loss rate of the secondary creator.

[0045] FIG. 2 is an explanatory diagram showing an example of a process for calculating a contribution rate and a damage rate. The voting result D1 shown in FIG. 2 shows an example in which four evaluators vote for a contribution rate and a damage rate indicated as a percentage. In this case, the calculation unit 160 (smart constructor 161) counts the contribution rates and damage rates that are the voting results, and calculates the contribution rate and damage rate of the secondary creator. The calculation unit 160 may also notify the evaluators and the secondary creator of the contribution rate and damage rate.

[0046] The payment amount determination unit 170 determines the payment amount to the primary creator and the secondary creator based on the contribution rate and the loss rate. Note that instead of the payment amount, the payment amount determination unit 170 may determine a distribution rate representing the ratio at which the payment amount is distributed to the primary creator and the secondary creator. A specific example of a calculation method for determining the payment amount will be described below. Note that in the following description, Ether (ETH), which is an example of a virtual currency, will be used as an example unit.

[0047] As a first specific example, a fixed amount-based calculation method can be mentioned. The payment amount determination unit 170 may determine the payment amount based on the following formula 1, taking into account the contribution rate and the loss rate, with the basic payment amount fixed (here, 0.1 ETH).

[0048] Payment amount = Basic payment amount + (Basic payment amount x contribution rate) - (Basic payment amount x loss rate) (Formula 1)

[0049] As a second specific example, a calculation method based on the contribution rate can be given. For example, the maximum payment amount is determined in advance (here, 0.1 ETH), and the payment amount determination unit 170 may determine the payment amount based on the following formula 2, taking into account the contribution rate and the loss rate.

[0050] Payment amount = Maximum payment amount × Contribution rate - Maximum payment amount × Loss rate (Formula 2)

[0051] As a third specific example, a calculation method using a sliding scale can be mentioned. Specifically, different payment amounts can be set according to the range of the contribution rate and the loss rate, and the payment amount determination unit 170 can determine the payment amount based on the setting. For example, the setting contents are as shown below. Contribution rate is 90% or more: Payment amount = 0.10 ETH Contribution rate is between 80% and 90%: Payment amount = 0.08 ETH Contribution rate is between 70% and 80%: Payment amount = 0.06 ETH

[0052] As a fourth specific example, a method is given in which a minimum payment amount and a maximum payment amount are set so that the payment amount calculated according to the contribution rate and the loss rate does not exceed the set minimum payment amount and maximum payment amount. For example, the maximum payment amount and the minimum payment amount may be determined in advance (here, the minimum payment amount=0.01 ETH, the maximum payment amount=0.1 ETH), and the payment amount determination unit 170 may determine the payment amount within that range. For example, the following setting contents may be given. Payment amount = Maximum payment amount × Contribution rate - Maximum payment amount × Loss rate however, If payment amount < minimum payment amount, payment amount = minimum payment amount If payment > maximum payment, payment = maximum payment

[0053] In this embodiment, an example has been described in which the payment calculation unit 170 uses the contribution rate and the loss rate. Note that the calculation of the payment amount may use only one of the indicators, rather than both the contribution rate and the loss rate. The payment calculation unit 170 may calculate the payment amount using, for example, only either the contribution rate or the loss rate. For example, when the payment calculation unit 170 uses only the contribution rate, the distribution unit 180 described later may distribute a predetermined payment amount according to the contribution rate of the secondary creator.

[0054] The distribution unit 180 distributes the determined payment amount to the primary creator and the secondary creator. The method of distributing the payment amount is arbitrary. For example, the distribution unit 180 may distribute the payment amount using a virtual currency used in the blockchain network to be used. Alternatively, the distribution unit 180 may transfer the payment amount to the account of each designated creator.

[0055] Next, an example of the operation of the right management system 1 of this embodiment will be described. Fig. 3 is a flowchart showing an example of the operation of the right management system 1 of this embodiment. The right management unit 130 grants secondary creation rights to the secondary creator based on a right granting instruction received from the terminal device 200 (step S11). The calculation unit 160 calculates a contribution rate based on the evaluation information (step S12). Then, the payment amount determination unit 170 determines the payment amount to the primary creator and the secondary creator who has the secondary creation rights based on the contribution rate (step S13).

[0056] As described above, in this embodiment, the rights management unit 130 grants secondary creation rights to secondary creators based on rights granting instructions, and the calculation unit 160 calculates the contribution rate based on the evaluation information. Then, the payment amount determination unit 170 determines the payment amount to be paid to the primary creator and secondary creators who have derivative creation rights based on the contribution rate. Thus, information related to rights can be managed.

[0057] For example, on a typical platform, when a primary creator grants permission to a secondary creator to use the content, the primary creator runs the risk of damaging the brand value of the content. In addition, due to the above concerns, the secondary creator has to overcome a high hurdle to obtain official recognition from the primary creator.

[0058] On the other hand, in this embodiment, the rights management unit 130 revokes the derivative creation right when the loss rate meets a predetermined condition. This reduces the risk assumed by the primary creator, and it is expected that this reduction in risk will lower the hurdle for secondary creators to receive official recognition. This makes it easier for amateur content creators, for example, to manage their own works and sell them to the mass communication.

[0059] In addition, in this embodiment, since the node 100 participates in a blockchain network, it becomes possible to use blockchain technology. Specifically, in this embodiment, the rights management unit 130 issues a derivative creation right NFT to grant the derivative creation right to the secondary creator. In this way, the ownership of the content can be proven using the derivative creation right NFT, which is not affected by the moral right of the author, so that it is guaranteed that a fair reward will be paid to the primary creator (original author) (a portion of the profits will be returned) even during secondary distribution.

[0060] Next, an outline of the present disclosure will be described. Fig. 4 is a block diagram showing an outline of a rights management device according to the present disclosure. A rights management device 80 (for example, node 100) according to the present disclosure includes a rights management means 81 (for example, rights management unit 130) for granting a secondary creator a secondary creation right based on a rights granting instruction for granting the secondary creator a secondary creation right for a first content created by the primary creator, a calculation means 82 (for example, calculation unit 160) for calculating a contribution rate indicating the degree to which the second content improves the evaluation of the first content based on evaluation information indicating the evaluation of the second content created by the secondary creator having the secondary creation right, and a payment amount determination means 83 (for example, payment amount determination unit 170) for determining the amount of payment to the primary creator and the secondary creator having the secondary creation right based on the contribution rate.

[0061] Such a configuration allows management of information regarding rights.

[0062] In addition, the calculation means 82 may calculate a damage rate indicating the degree to which the second content lowers the evaluation of the first content based on the evaluation information, and the payment amount determination means 83 may determine the payment amount to be paid to the primary creator and the secondary creator who owns the derivative creation rights based on the contribution rate and the damage rate.

[0063] In addition, the rights management means 81 may invalidate the derivative work rights when the loss rate meets a predetermined condition. In this way, it becomes possible to stop the payment of the amount based on the derivative work rights.

[0064] In addition, the rights management means 81 may grant the secondary creator the secondary creation rights by issuing a secondary creation right NFT created based on the blockchain used. In this way, it is possible to prevent the tampering of records of the owner, etc. while ensuring uniqueness.

[0065] The rights management device 80 may also include an evaluation information management means (e.g., an evaluation information management unit 150) for managing evaluation information on the second content evaluated by a user related to the second content. The calculation means 82 may calculate the contribution rate and the loss rate based on the evaluation information. By managing the information evaluated by a user related to the second content, it becomes possible to calculate a more appropriate contribution rate and loss rate.

[0066] Specifically, the evaluation information management means may use a voting algorithm implemented in a smart contract to accept votes from evaluators and manage the contents of the votes as evaluation information. By using such a mechanism, the legitimacy of the evaluation information can be guaranteed.

[0067] Specifically, the evaluation information management means may manage a plurality of pieces of evaluation information expressed as percentages of the contribution rate and the damage rate. Then, the calculation means 82 may calculate the average value of the contribution rate and the damage rate included in each piece of evaluation information to calculate the contribution rate and the damage rate of the secondary creator.

[0068] 5 is a block diagram showing an overview of a rights management system according to the present disclosure. The rights management system according to the present disclosure (for example, the rights management system 1) includes a node 90 (for example, the node 100) that participates in a blockchain network, and a terminal device 70 (for example, the terminal device 200) that is connected to the node 90.

[0069] The terminal device 70 includes an instruction means 71 (for example, the control unit 210) that issues a right grant instruction to the terminal device 70 to grant the secondary creator the derivative creation right of the first content created by the primary creator.

[0070] Node 90 includes rights management means 81, calculation means 82, and payment amount determination means 83. The contents of rights management means 81, calculation means 82, and payment amount determination means 83 are similar to the contents of rights management means 81, calculation means 82, and payment amount determination means 83 illustrated in FIG.

[0071] With such a configuration, information regarding rights can also be managed.

[0072] A part or all of the above-described embodiments can be described as, but is not limited to, the following supplementary notes.

[0073] (Supplementary Note 1) A right management means for granting a derivative creation right to a secondary creator based on a right granting instruction for granting the derivative creation right of a first content created by a primary creator to the secondary creator; a calculation means for calculating a contribution rate indicating a degree to which the second content improves an evaluation of the first content based on evaluation information indicating an evaluation of a second content created by the secondary creator who owns the derivative creation right; and a payment amount determination means for determining a payment amount to be paid to the primary creator and the secondary creator who has the derivative creation right based on the contribution rate. A rights management device comprising:

[0074] (Note 2) The calculation means calculates a damage rate indicating a degree to which the second content reduces an evaluation of the first content based on the evaluation information; The payment amount determination means determines the payment amounts to be paid to the primary creator and the secondary creator who has the derivative creation rights based on the contribution rate and the loss rate. 2. A rights management device as claimed in claim 1.

[0075] (Appendix 3) The rights management means invalidates the derivative creation rights when the damage rate meets a predetermined condition. 3. A rights management device as claimed in claim 2.

[0076] (Appendix 4) The rights management method grants derivative creation rights to secondary creators by issuing derivative creation rights NFTs (Non-Fungible Tokens) created based on the blockchain used. 3. A rights management device according to claim 1 or 2.

[0077] (Supplementary Note 5) A rating information management unit is provided for managing rating information on the second content rated by a user related to the second content, The calculation means calculates the contribution rate and the damage rate based on the evaluation information. 4. A rights management device according to claim 2 or 3.

[0078] (Appendix 6) The evaluation information management means accepts votes from evaluators using a voting algorithm implemented in a smart contract, and manages the contents of the votes as evaluation information. 6. A rights management device as claimed in claim 5.

[0079] (Appendix 7) The evaluation information management means manages a plurality of pieces of evaluation information expressed as percentages of contribution rate and detriment rate, The calculation means calculates the average values ​​of the contribution rate and the loss rate included in each piece of evaluation information to calculate the contribution rate and the loss rate of the secondary creator. 6. A rights management device as claimed in claim 5.

[0080] (Appendix 8) Nodes participating in the blockchain network, A terminal device connected to the node, The terminal device an instruction means for issuing a right grant instruction to the terminal device to grant a secondary creator a derivative creation right of the first content created by the primary creator; The node: a right management means for granting a secondary creation right to the secondary creator based on the right grant instruction; a calculation means for calculating a contribution rate indicating a degree to which the second content improves an evaluation of the first content based on evaluation information indicating an evaluation of a second content created by the secondary creator who owns the derivative creation right; and a payment amount determination means for determining a payment amount to be paid to the primary creator and the secondary creator who has the derivative creation right based on the contribution rate. 13. A rights management system comprising:

[0081] (Additional Note 9) The calculation means calculates a damage rate indicating a degree to which the second content lowers the evaluation of the first content based on the evaluation information; The payment amount determination means determines the payment amounts to be paid to the primary creator and the secondary creator who has the derivative creation rights based on the contribution rate and the loss rate. 7. A rights management system as described in Appendix 8.

[0082] (Appendix 10) The computer grants a derivative creation right to a secondary creator based on a right granting instruction to grant the secondary creator a derivative creation right of the first content created by the primary creator, the computer calculates a contribution rate indicating a degree to which the second content improves an evaluation of the first content based on evaluation information indicating an evaluation of a second content created by the secondary creator who owns the derivative creation right; The computer determines payment amounts to the primary creator and the secondary creator who owns the derivative creation rights based on the contribution rate. A rights management method comprising:

[0083] (Appendix 11) To the computer, a rights management process for granting a secondary creator a derivative creation right of the first content created by the primary creator based on a rights granting instruction for granting the secondary creator the derivative creation right; A calculation process for calculating a contribution rate indicating a degree to which the second content improves an evaluation of the first content based on evaluation information indicating an evaluation of a second content created by the secondary creator who owns the derivative creation rights; and A payment amount determination process for determining the amount of payment to the primary creator and the secondary creator who owns the derivative creation right based on the contribution rate. A rights management program for running the program. [Explanation of symbols]

[0084] 1. Rights Management System 100 nodes 110 Storage section 120 Input section 130 Rights Management Department 140 Usage Management Department 150 Evaluation Information Management Department 160 Calculation section 170 Payment amount determination unit 180 Distribution section 200 Terminal Equipment 210 Control section

Claims

1. a right management means for granting a derivative creation right to a secondary creator based on a right granting instruction for granting the derivative creation right of the first content created by the primary creator to the secondary creator; a calculation means for calculating a contribution rate indicating a degree to which the second content improves an evaluation of the first content based on evaluation information indicating an evaluation of a second content created by the secondary creator who owns the derivative creation right; and a payment amount determination means for determining a payment amount to be paid to the primary creator and the secondary creator who has the derivative creation right based on the contribution rate. A rights management device comprising:

2. The calculation means calculates a damage rate indicating a degree to which the second content lowers an evaluation of the first content based on the evaluation information; The payment amount determination means determines the payment amounts to be paid to the primary creator and the secondary creator who has the derivative creation rights based on the contribution rate and the loss rate.

2. A rights management device according to claim 1.

3. The right management means invalidates the derivative creation right when the damage rate satisfies a predetermined condition.

3. A rights management device according to claim 2.

4. The rights management means grants derivative creation rights to secondary creators by issuing derivative creation rights NFTs (Non-Fungible Tokens) created based on the blockchain used.

3. A rights management device according to claim 1 or 2.

5. an evaluation information management means for managing evaluation information on the second content evaluated by a user related to the second content, The calculation means calculates the contribution rate and the damage rate based on the evaluation information.

4. A rights management device according to claim 2 or 3.

6. The evaluation information management means accepts votes from evaluators using a voting algorithm implemented in a smart contract, and manages the contents of the votes as evaluation information.

6. A rights management device according to claim 5.

7. Nodes participating in the blockchain network; A terminal device connected to the node, The terminal device an instruction means for issuing a right grant instruction to the terminal device to grant a secondary creator a derivative creation right of the first content created by the primary creator; The node: a right management means for granting a secondary creation right to the secondary creator based on the right grant instruction; a calculation means for calculating a contribution rate indicating a degree to which the second content improves an evaluation of the first content based on evaluation information indicating an evaluation of a second content created by the secondary creator who owns the derivative creation right; and a payment amount determination means for determining a payment amount to be paid to the primary creator and the secondary creator who has the derivative creation right based on the contribution rate.

13. A rights management system comprising:

8. The calculation means calculates a damage rate indicating a degree to which the second content lowers an evaluation of the first content based on the evaluation information; The payment amount determination means determines the payment amounts to be paid to the primary creator and the secondary creator who has the derivative creation rights based on the contribution rate and the loss rate. The rights management system of claim 7.

9. The computer grants a derivative creation right to a secondary creator based on a right granting instruction for granting the derivative creation right of the first content created by the primary creator to the secondary creator, the computer calculates a contribution rate indicating a degree to which the second content improves an evaluation of the first content based on evaluation information indicating an evaluation of a second content created by the secondary creator who owns the derivative creation right; The computer determines payment amounts to the primary creator and the secondary creator who owns the derivative creation rights based on the contribution rate. A rights management method comprising:

10. On the computer, a rights management process for granting a secondary creator a derivative creation right of the first content created by the primary creator based on a rights granting instruction for granting the secondary creator the derivative creation right; A calculation process for calculating a contribution rate indicating a degree to which the second content improves an evaluation of the first content based on evaluation information indicating an evaluation of a second content created by the secondary creator who owns the derivative creation rights; and A payment amount determination process for determining the amount of payment to the primary creator and the secondary creator who owns the derivative creation right based on the contribution rate. A rights management program for running the program.

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