WO2020036267A1

WO2020036267A1 - Platform and method for content management

Info

Publication number: WO2020036267A1
Application number: PCT/KR2018/016615
Authority: WO
Inventors: 배영식
Original assignee: 주식회사 후본
Priority date: 2018-08-17
Filing date: 2018-12-26
Publication date: 2020-02-20

Abstract

Disclosed are a platform and a method for content management. A content rights management method according to an embodiment comprises the steps of: receiving a content from a user; and encrypting the content into encrypted information and generating a create key for rights to the content, wherein the create key includes copyright for the content and generation rights for the content.

Description

Platforms and Methods for Content Management

The embodiments below relate to a platform and method for content management.

As computer technology develops, various digital materials are widely used. Many of these digital materials are confidential materials requiring security or copyrighted works. Various techniques have been proposed to protect these materials.

Digital rights management (DRM) is a term that refers to any technology that restricts publishers or copyright holders from using their distributed digital materials or hardware and using them only for their intended purpose. In order to prevent illegal use of many music and movies that were distributed offline, mainly by using CDs or DVDs, etc. We use to limit use of phosphorus. In addition, as the importance of security is increasing and awareness of it has been widely used for the purpose of preventing the leakage of confidential data including corporate trade secrets.

Recently, blockchain technology has been used for DRM technology. Blockchain technology is a record keeping technology designed to ensure the integrity of transaction details without having to guarantee the integrity of transactions in mutual transactions. That is, it is a technology that includes a mechanism that stores the details of the transaction but can not be arbitrarily modified. However, blockchain technology itself is an element technology irrelevant to what is stored in the block database implemented in a chain form. In other words, since the electronic money represented by Bitcoin is implemented as a blockchain, the ledger containing the details of the currency transaction has become the target, and in fact, there is no restriction on the storage target.

Considering the nature of the P2P technology applied to the blockchain or the tamper-proof mechanism provided by the blockchain, the data stored in the blockchain is "irreversible data that can be viewed by third parties but not changed." It is a suitable object. The ledger mentioned above is the most common case.

According to an embodiment, there is provided a method of managing content rights, the method including receiving content from a user, and encrypting the content with encryption information to generate a Create Key for the right of the content, wherein the Create Key is assigned to the content. Authoring rights for and creation rights for the content.

The generation right for the content may include a right for generating an encrypted content and a right for generating a coin, and the coin may be a use right for accessing the content.

The encryption information may be bio information of the user.

The generating may include generating the Create Key according to the number of owners who own the content.

The method may further include transferring the Create Key, and at least one of an authoring right for the content and a generating right for the content may be transferred.

When the Create Key is transferred to a person who is not an heir, only the authoring authority for the content may be transferred.

The method may further include generating a new Create Key using bio information of the inheritor when the Create Key is transferred to the heir.

The method may further include generating the encrypted content and the coin in response to the Create Key.

The generating of the encrypted content and the coin may include generating the encrypted content and the coin with bio information of the user in response to the Create Key.

The number of coins generated may be set according to a usage right option for an expiration date of the content.

The method may further comprise accessing the encrypted content using the coin.

The method may further include the step of returning the coin based on the license option information for the expiration date of the content included in the coin.

Any one of the encrypted content or the coin may include a playback program or a playback module.

1A and 1B are diagrams for explaining a blockchain technology.

2 is a view for explaining the time series connection of the blockchain.

3 is a schematic block diagram of a content management platform according to one embodiment.

4 is a flowchart for describing a process in the content management platform shown in FIG. 3.

FIG. 5 illustrates a diagram for describing an operation of generating a coin and encrypted content by the creator tool illustrated in FIG. 3.

FIG. 6 is a diagram for describing a process of the service tool illustrated in FIG. 3.

7 is a diagram for explaining an example of a method of using encrypted content.

8 is a diagram for explaining another example of a method of using encrypted content.

9 is a view for explaining another example of a method of using encrypted content.

10A to 10C are diagrams for describing examples of the encrypted content reproduction scheme described with reference to FIG. 9.

FIG. 11 illustrates an example in which the content management platform illustrated in FIG. 3 is used.

12 is a schematic block diagram of an electronic device capable of implementing a content management platform according to an embodiment.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. However, various changes may be made to the embodiments so that the scope of the patent application is not limited or limited by these embodiments. It is to be understood that all changes, equivalents, and substitutes for the embodiments are included in the scope of rights.

The terminology used herein is for the purpose of description and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Terms such as first or second may be used to describe various components, but the components should not be limited by the terms. The terms are intended only to distinguish one component from another, for example, without departing from the scope of rights according to the concepts of the embodiment, the first component may be named a second component, and similarly The second component may also be referred to as a first component.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

In addition, in the description with reference to the accompanying drawings, the same components will be given the same reference numerals regardless of the reference numerals and duplicate description thereof will be omitted. In the following description of the embodiment, if it is determined that the detailed description of the related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

Tool in the present specification may mean hardware capable of performing functions and operations according to each name described in the present specification, and may mean computer program code capable of performing specific functions and operations. Or an electronic recording medium, for example, a processor or a microprocessor, in which computer program code capable of performing specific functions and operations is mounted.

In other words, a tool may mean a functional and / or structural combination of hardware for performing the technical idea of the present invention and / or software for driving the hardware.

1A and 1B are diagrams for explaining a blockchain technology.

FIG. 1A relates to a centralized transaction recording method, and FIG. 1B relates to a distributed transaction recording method using a blockchain.

Blockchain is a distributed database that grows continuously by adding new blocks at predetermined intervals. Each of the plurality of blocks included in the blockchain may have a unique identifier according to the generated order.

Blockchain also means a common ledger that is distributed, independent, and open. For example, Bitcoin utilizes blockchain technology to record transactions on a common ledger.

Referring to FIG. 1A, a central server of a centralized transaction recording method is used in a bank, a mart, a store, and the like, and records and manages transaction details transmitted from various branches in one database. According to the centralized transaction recording method, the transaction details and the like are managed in one database, and since the transaction records are not in an open form, an operation such as manipulating or concealing records may be performed internally. Or, if the central server is hacked, the records stored in the database can be manipulated all at once.

Referring to FIG. 1B, in the distributed transaction recording method, an unspecified number of devices may each play a role of a distributed server. The distributed server acquires the authority to create a new block by collecting transaction details broadcasted on the network and searching for a hash of a new block that satisfies a predetermined condition based on the hash of the last generated block on the blockchain. can do. The plurality of distributed servers may have a structure for monitoring each other. Devices for generating a blockchain are not predetermined, and validity of each of the blockchains connected in an unspecified plurality of devices can be verified. Therefore, even if a recording operation is performed in a specific distributed server or a specific distributed server is hacked, the justification for the blockchain can be excluded by other distributed servers on the network.

2 is a view for explaining the time series connection of the blockchain.

Blocks included in the blockchain are generated by a predetermined time unit, and a new block can be created only when a hash that satisfies a predetermined condition is calculated based on a hash of a previous block.

A plurality of blocks included in the blockchain may be connected in time series. The hash function means a function that can calculate the direction from input to output, but it is impossible or difficult to calculate the input from the output. The method for deriving the input value of the hash function is assignment method. Since the desired output must be derived, the time required to derive the input of the condition can be determined differently according to the difficulty of the condition to be satisfied.

The hash function may have a difficulty in which a hash may be calculated in response to a period in which the blockchain is generated (for example, 10 minutes). The hash may be determined as a value that satisfies the condition by using the hash of the previous block and a newly generated transaction after the previous block. A calculation is performed to calculate a hash of the blockchain in an unspecified plurality of devices. When a hash is calculated by a specific device, a block including the hash in the header may be newly generated and added to the blockchain.

When a new block is created, a plurality of devices can start calculating to calculate the hash of the next block based on the point in time, and if the hash is calculated, another device that includes the hash in the header of the device that generated the hash You can create a block. Each block included in the blockchain may include a different hash.

As shown in FIG. 2, blockchains generated at predetermined periods are connected in time series, and two or more blockchains may be generated at a similar point in time. In this case, only blocks that form the longest chain from the first block are recognized as valid block chains, and have a form of convergence into one block chain.

3 is a schematic block diagram of a content management platform according to an embodiment, and FIG. 4 is a flowchart for describing a process in the content management platform shown in FIG. 3.

3 and 4, a content management platform 10 includes a package tool 100, a creator tool 200, and a service tool 300. . The content management platform 10 may manage copyright of content (eg, digital content) using a blockchain.

The content may mean content such as copyright content and information content. Copyright content is content such as intellectual property (patents, trademarks, designs, etc.), sound recordings, media, text, 3D modeling files, etc., and information content is personal information (e.g., medical information, personal information, etc.), group information ( For example, it may be a content such as a company, an institution, an organization, or the like. That is, the content may mean various contents generated by a person, and the copyright of the content may mean not only a concept of copyright in a traditional sense, but also a unique right of the person who created the content.

The package tool 100 may receive the content from the user who created the content. The package tool 100 may generate a Create Key for the right of the content by encrypting the content input from the user with encryption information.

The encryption information may include at least one combination of bio information, a private key, a letter and a symbol of the user. For example, the bioinformation may include biometric information having uniqueness such as a user's signature, DNA, face (or face), blood (or blood vessels), fingerprint, voice, or the like. If the encryption information is made up of two or more combinations, the bioinformation may be included.

The create key 410 may include a copyright (or authoring authority) for the content and a creation right (or generating authority) for the content. The right to generate the content may include a right to generate the encrypted content 430 and a right to generate the coin 450. That is, an owner with Create Key 410 may have ownership of the copyright of the content and a creation right to generate encrypted content 4530 and coin 450.

In addition, the package tool 100 may generate a Create Key 410 according to the number of owners owning the content. One Create Key 410 may be generated for content, but a plurality of Create Keys 410 may be generated according to the number of owners owning the content. For example, a plurality of Create Keys 410 may be generated, and a plurality of owners may share a stake in the copyright of the content. If a decision is to be made about content, multiple owners may have to work together.

Create Key 410 may be assignable. When the Create Key 410 is transferred, a selection may be made to transfer at least one of ownership of the copyright of the content and creation right of the content.

If the user who created the content, that is, the copyright holder, dies, the copyright of the content is transferred to the heir, and the Create Key 410 generated by the bio information of the user who created the content has a new Create Key with the bio information of the inheritor. Can be set to generate. Heirs can own the copyright for the content by creating a new Create Key using their bio-information.

The creator tool 200 may generate encrypted content 430 and / or coin 450 in response to Create Key 410.

The encrypted content 430 may be stored and used in a blockchain or a separate dedicated content server. In addition, the encrypted content 430 may be embedded in the coin 450 and used.

The coin 450 may be a usage right, for example, a token, indicating a usage right to access content. The usage period of the coin 450 may be divided into a sample, a specific usage period, and an infinite usage period. The coin 450 may be distributed (or sold) to users who want to use the content, that is, users other than the copyright holder. The owner of the coin 450 may use the content using the coin 450.

The creator tool 200 may set the generation and the number of generation of the encrypted content 430 and the coin 450 in response to the bio information of the owner of the Create Key 410. That is, the creator tool 200 may need the owner's bio information to set the number of generation of the encrypted content 430 and the coin 450.

The creator tool 200 may be embedded in the create key 410.

If Create Key 410 is transferred to another user, the bio-information of the previous owner (ie, the assignee) may not be transferred to another user (ie, assignee). Accordingly, after the transfer of the create key 410, the creator tool 200 may not further generate the encrypted content 430 and the coin 450.

The service tool 300 may access the encrypted content 430 using the coin 450. For example, the service tool 300 may be a service provider platform that allows access to the encrypted content 430.

The owner of the coin 450 may use the encrypted content 430 by transferring the coin 450 to the service tool 300, and may return the coin 450 after the use thereof.

Create Key 410, encrypted content 430, and coin 450 may be stored in the blockchain. The blockchain may exist for each content input by the user. The blockchain may include an ordered sequence of data blocks that store information about users and content. When a Create Key is generated in the package module 100 by a user inputting content for the first time, the blockchain may include a genesis block that stores Create Key and owner (or copyright holder) information of the content. When a usage right for the content is obtained, a new subsequent block can be added to the blockchain. Each new subsequent block may represent a usage right for the content.

In addition, the Create Key 410, the encrypted content 430, and the coin 450 are stored data that is similar to the blockchain or packaged in a form that includes the blockchain and other security technologies. It may be possible.

The creator tool 200 may generate a coin 450 with bio information of the owner of the Create Key 410 in response to the Create Key 410. In this case, the creator tool 200 may generate and set the number of coins 450 generated according to the usage right option for the expiration date of the content.

The license options for the coin 450 include Sample use (e.g., Preview, Preview / Listen, etc.), finite term usage (e.g., limited to the number of times or period of content use (10 times, one month, etc.)), Infinite term usage (e.g., unlimited number of times of use of content, complete purchase and ownership of content, etc.), and the like.

The number of generations can be set to A sample use, B use finite deadline use, C use infinite deadline use, and D other use use. For example, A may be set at 1 million to 10 million, B at 10,000, C at 1000, and D may be arbitrarily set.

The user who created the content, that is, the copyright holder, may limit the number of coins 450 that can be distributed to other users through the creator module 200.

Accordingly, the user who can access the content is limited, and the content may be set as a premium value, general content, or the like. In addition, the status of content distribution can be easily monitored, and illegal distribution of content can be prevented.

The creator tool 200 may generate the encrypted content 430 with bio information of the owner of the Create Key 410 in response to the Create Key 410.

The creator tool 200 may generate and set the number of generation of the encrypted content 430 based on the operation method of the encrypted content 430. The operation method may include a quantity limit method and a public method. For example, when the encrypted content 430 is operated in a limited quantity method, the creator tool 200 generally generates one encrypted content 430, but not one content server in consideration of the visitor. Ten encrypted contents 430 may be generated to operate two dedicated content servers.

The service tool 300 may be for providing a service for accessing the encrypted content 430 by using the coin 450 and returning the coin 450 after the service ends.

The method of the service tool 300 may be a method in which a user having a coin 450 may access a content server in which the encrypted content 430 is stored, and access the encrypted content 430 when the coin 450 is delivered. Can be.

For example, the service tool 200 may receive a coin 450 from a user having a coin 450 and allow the user to access the encrypted content 430 using the coin 450. That is, the service tool 200 may transmit the encrypted content 430 to the user having the coin 450. The content included in the encrypted content 430 may be reproduced in various ways, and may be reproduced by a runtime program (for example, a player) included in the encrypted content 430.

The coin 450 may include coin log information. The coin log information may include coin information (which is coin identification information), a service location (a person receiving a coin, a person providing a service), a possession location (a person who owns a coin), and the like. The service location and the owned location may be stored encrypted. At this time, the bio information of the owner of the coin 450 may be used for encryption.

The coin information may be coin identification information for identifying the coin 450. The service location may be the location of a service provider that provides encrypted content 450 corresponding to the coin 450. The service location may be limited (allowed and assigned) to only a few service providers, but may be determined indefinitely. The owning location may be the location of the user who owns the coin 450 (eg, the location where the coin 450 was initially traded and saved).

The coin log information may further include information regarding a license option of the coin 450. The information on the license option may be separately managed in the coin log information, but may be included in the coin information and managed.

The coin 450 may be delivered to the service tool 300 to reflect the results of all transactions used, and the coin log information may be updated. When the coin 450 is delivered to and used by the service tool 300, the usage count is counted by the service tool 300 that has received the runtime program or coin information included in the coin 450, and counts the license option information. The count can be updated.

The service tool 300 may return the coin 450 to the user who delivered the coin 450 based on the coin log information and the history information record. The service tool 300 may include a coin provider management tool 310 for managing coins 450 delivered from a user. The coin provider management tool 410 may record history information (eg, access history information) of the user of the coin 450. For example, the history information may include the service location of the service provider providing the encrypted content 430 and the current owned location of the user who delivered the coin 450.

The coin provider management tool 310 may determine whether to return the coin 450 based on the license option. In this case, the coin provider management tool 310 may use the information on the license option included in the coin log information as it is, but may separately record information on the license option of the coin 450 and reflect the usage count. . If the number of uses of the coin 450 is left, the coin provider management tool 410 returns the coin 450 to the user's current owning location of the coin 450 based on the history information record or based on the coin log information. Coin 450 may be returned to the owned location stored in the log information.

Transaction related to the use of the coin 450 and thus information (for example, coin log information) of the coin 450 may be stored in the blockchain.

7 illustrates a content streaming method as an example of a method using the encrypted content 450. The content streaming method may be a method in which a user having a coin 450 accesses a content server in which the encrypted content 430 is stored, has a coin 450, and uses the encrypted content 430.

The user may access the content server with the encrypted content 430 through the service tool 300 and use the encrypted content 430 with the coin 450. It may be a method using encrypted Enc Contents. A runtime program (eg, a player) included in the encrypted content 430 may decode the encrypted content 430 and provide the content to the user. The content may be provided to the user in a streaming service manner.

8 illustrates a method of embedding content coins as another example of a method of using encrypted content. The content coin embedding method may be a method of storing and playing the encrypted content 430 inside the coin 430.

The coin 430 may include an encrypted content 430 and a runtime program. The runtime program may play the encrypted content 430.

Content reproduction may take various forms such as a self-playing playback program or a decoding program in the form of a module that provides content to an external playback program.

9 illustrates a service download method, that is, a content download method, as another example of a method of using encrypted content. In the service download method, an owner having a coin 450 accesses a content server in which an encrypted content 450 is stored, downloads an encrypted content 450 from a corresponding server or a website, and then downloads the locally encrypted content 450. It may be a way to reproduce.

10A illustrates a playback method in which a player is included in the encrypted content 430. The encrypted content 450 may include a player. The player may play content included in the encrypted content 450 using the coin 430.

FIG. 10B illustrates a reproduction method in which a player is included in the coin 450. The coin 450 may include a player. The player included in the coin 450 may play the content included in the encrypted content 450.

Fig. 10C shows a reproduction method of using a dedicated player. It may be a method of playing content with a coin 450 and an encrypted content 430 in a dedicated player. The dedicated player may receive the coin 450 and the encrypted content 430, and play the content included in the encrypted content 430 using the coin 450.

The player of FIGS. 10A to 10C refers to a runtime program, and the encrypted content reproduction scheme includes all other methods using FIGS. 10A, 10B, and 10C. For example, the encrypted content 430 may be played only when the location of the runtime program is present in the coin 450 and the encrypted content 430, respectively, and interoperates with each other.

As shown in FIG. 11, the content management platform 10 may be used in a 3D printer or the like.

The operation of Create Key, encrypted content, and coin can be selected and operated as described above, and the service tool can be operated within a server operating method or a 3D printer, and can be configured to perform practical output restriction. In addition, the output data may be packaged in a separate blockchain to be generated and provided as a one-time output file to prevent external exposure during output, and at this time, it may be limited to be operated in a specific device.

The output file of 3D printer supports various formats such as Mesh, Solid, G-Code, STL, 3MF, AMF, etc., and it can support the built-in method of printing software or dedicated software method, internet service method for general purpose software or offline plug-in method. . In the case of Web Streaming Service, it can be provided by Web interworking method, WAS or Web App method.

Referring to FIG. 12, the electronic device 1200 includes a memory 1210 and a processor 1230.

At least one of the package tool 100, the creator tool 200, and the service tool 300 described with reference to FIGS. 1 through 11 may be implemented in (or installed and embedded in) the electronic device 1200. Can be executed by

The electronic device 1200 may be implemented as a personal computer (PC), a data server, a 3D printer, or a portable device.

Portable devices include laptop computers, mobile phones, smart phones, tablet PCs, mobile internet devices (MIDs), personal digital assistants (PDAs), enterprise digital assistants (EDAs). , Digital still cameras, digital video cameras, portable multimedia players (PMPs), personal navigation devices or portable navigation devices (PNDs), handheld game consoles, e-books ( It may be implemented as an e-book or a smart device. The smart device may be implemented as a smart watch, a smart band, or a smart ring.

The memory 1210 may store instructions (or program) executable by the processor 1230. For example, the instructions may be instructions for executing an operation of at least one of the package tool 100, the creator tool 200, and the service tool 300.

The processor 1230 may control the overall operation of the electronic device 1200. The processor 830 may be implemented with at least one processor including one or more cores.

The processor 1230 may execute instructions for executing an operation of at least one of the package tool 100, the creator tool 200, and the service tool 300. Instructions may be implemented (or embedded) in processor 1230.

The processor 1230 may also retrieve, fetch, or read instructions from the memory 1210 and execute the instructions to execute the instructions. The processor 1230 may then write (write or write) one or more execution results to a memory 1210 or other memory (not shown), such as an internal register, internal cache, or storage.

When at least one of the package tool 100, the creator tool 200, and the service tool 300 is executed by the processor 1230, the contents described with reference to FIGS. 1 through 11 are substantially executed by the processor 1230. The same can be done. Therefore, detailed description is omitted.

The method according to the embodiment may be embodied in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the media may be those specially designed and constructed for the purposes of the embodiments, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

The software may include a computer program, code, instructions, or a combination of one or more of the above, and may configure the processing device to operate as desired, or process independently or collectively. You can command the device. Software and / or data may be any type of machine, component, physical device, virtual equipment, computer storage medium or device in order to be interpreted by or to provide instructions or data to the processing device. Or may be permanently or temporarily embodied in a signal wave to be transmitted. The software may be distributed over networked computer systems so that they may be stored or executed in a distributed manner. Software and data may be stored on one or more computer readable recording media.

Although the embodiments have been described with reference to the accompanying drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques may be performed in a different order than the described method, and / or components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different form than the described method, or other components. Or, even if replaced or substituted by equivalents, an appropriate result can be achieved.

Therefore, other implementations, other embodiments, and equivalents to the claims are within the scope of the following claims.

Claims

Receiving content from a user; And

Encrypting the content with encryption information to generate a Create Key for the right of the content

Including,

The Create Key is a content rights management method comprising the authoring rights for the content and the creation rights for the content.
The method of claim 1,

The generation right for the content includes a right for generating encrypted content and a right for generating coins,

The coin is a content rights management method that is a usage right to access the content.
The method of claim 1,

And the encryption information is bio information of the user.
The method of claim 1,

The generating step,

Generating the Create Key according to the number of owners owning the content

Content rights management method comprising a.
The method of claim 1,

Transferring the Create Key

More,

At least one of the authoring rights for the content and the creation rights for the content is transferred.
The method of claim 5,

If the Create Key is transferred to a person who is not an heir, only the authoring rights for the content is transferred.
The method of claim 5,

If the Create Key is transferred to the heir, generating a new Create Key using the bio information of the heir;

Content rights management method further comprising.
The method of claim 2,

Generating the encrypted content and the coin in response to the create key

Content rights management method further comprising.
The method of claim 8,

Generating the encrypted content and the coin,

Generating the encrypted content and the coin with the bio information of the user in response to the create key

Content rights management method comprising a.
The method of claim 9,

Generating the encrypted content and the coin,

Setting the number of generation of the encrypted content and the coin in response to the bio information of the user

Content rights management method further comprising.
The method of claim 10,

The number of coin generation is set according to the license option for the expiration date of the content.
The method of claim 10,

Accessing the encrypted content using the coin

Content rights management method further comprising.
The method of claim 12,

Returning the coin based on license option information on the expiration date of the content included in the coin;

Content rights management method further comprising.
The method of claim 2,

Any one of the encrypted content or the coin includes a playback program or a playback module.