JP7149604B2 - Content license server and method - Google Patents

Description

The present invention relates to a content platform system, and more particularly to a content licensing system using a blockchain network.

An electronic commerce system for buying and selling digital content has been proposed (see Patent Document 1, for example). In this electronic commerce system, the seller of digital contents recovers the amount of investment in development of digital contents and the amount of investment in marketing for sales of digital contents, etc., and adjusts the price of digital contents so as to obtain a profit. set.

JP 2010-272033 A

The techniques described above cannot solve the problem of falsification of content itself and content transaction history.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a system that enables safe content transactions.

According to the present invention, an owner terminal that owns content, a user terminal that uses the content, and a content license server that is connected to each of the owner terminal and the user terminal via a network. A content platform system comprising:
The owner terminal transmits content information including the content received from the owner and one or more conditions regarding use of the content to the content license server;
The content license server provides the received content information to the user terminal so that it can be used,
The user terminal transmits to the content license server a usage request received from the user and which can be generated for each of the conditions of the content;
The content license server broadcasts and shares usage permission information including the content and the conditions related to the usage request and the user terminal to the blockchain network, and notifies the user terminal of the usage permission. send and
A content platform system is obtained in which the user terminal that has received the usage permission notification acquires or uses the content by referring to the usage permission information broadcasted on the blockchain network.

ADVANTAGE OF THE INVENTION According to this invention, the system which can perform safe transaction of contents can be provided.

It is a figure which shows the structural example of the system by embodiment of this invention. 2 is a block diagram showing the hardware configuration of a management server in FIG. 1; FIG. 2 is a block diagram showing the hardware configuration of the user terminal in FIG. 1; FIG. It is a figure which shows the flow of a process of the system by this Embodiment. FIG. 4 is an image diagram of a price table of the system according to the present embodiment; It is an image diagram of a transaction table of the system according to the present embodiment.

The contents of the embodiments of the present invention are listed and explained. A content platform system according to an embodiment of the present invention has the following configuration.
[Item 1]
A content platform including an owner terminal that owns content, a user terminal that uses the content, and a content license server that is connected to each of the owner terminal and the user terminal via a network. a system,
The owner terminal transmits content information including the content received from the owner and one or more conditions regarding use of the content to the content license server;
The content license server provides the received content information to the user terminal so that it can be used,
The user terminal transmits to the content license server a usage request received from the user and which can be generated for each of the conditions of the content;
The content license server broadcasts and shares usage permission information including the content and the conditions related to the usage request and the user terminal to the blockchain network, and notifies the user terminal of the usage permission. send and
The content platform system, wherein the user terminal that has received the usage permission notification acquires or uses the content by referring to the usage permission information broadcast on the blockchain network.
[Item 2]
A content platform system according to claim 1,
wherein the content license server sets a usage price of the content according to the usage request for each of the conditions of the content, and provides information on the usage price to the user terminal so as to be usable. .
[Item 3]
The content platform system according to claim 2,
The owner terminal transmits an initial price for each condition of the content received from the owner to the content license server;
The content platform system, wherein the content license server sets the usage price based on the initial price.
[Item 4]
The content platform system according to any one of claims 1 to 4,
The content platform system, wherein the conditions include at least a usable period, a usable location, a usable terminal, and a usable number of users of the content.

<Details of Embodiment>
A content platform system (hereinafter referred to as "system") according to an embodiment of the present invention will be described below with reference to the drawings.

<Overview>
In the system according to the embodiment of the present invention, for example, rights such as copyrights (property rights, ownership rights, and other rights that can be traded by rights sharing entities) are set to respective usage conditions (usage period, usage location, It is a platform system that allows transactions to be conducted according to the number of users, terminals used, number of users, etc.), and in particular, manages transaction histories using distributed ledger technology such as blockchain networks.

In addition, according to the terms of use, users' rights (whether or not they can use specific content at specific dates and times) are shared (broadcast) on the blockchain network to prevent tampering with users and transaction histories. It is.

<Configuration>
As shown in FIG. 1, a management server (content license server) 1 is centered around a user terminal (owner terminal) 2a (terminal not shown) and a user terminal (user terminal) 2b (terminal is shown in the figure). (not shown) are connected via a network (such as the Internet, including a blockchain network) 3 in a so-called client-server model.

In the present embodiment, at least the management server 1 and the user terminal 2a are connected so as to be able to access and refer to a ledger (blockchain) jointly managed in a blockchain network.

<Hardware configuration>
The management server 1 and the user terminal 2 according to this embodiment have the following hardware configurations. In addition, the following configuration is an example, and may have a configuration other than this.

<Management Server 1>
As shown in FIG. 2, the management server 1 constitutes a part of the system by executing information processing through communication with the user terminals 2a and 2b. The management server 1 may be, for example, a general-purpose computer such as a workstation or personal computer, or may be logically realized by cloud computing.

The management server 1 includes at least a processor 10 , a memory 11 , a storage 12 , a transmission/reception section 13 , an input/output section 14 and the like, which are electrically connected to each other through a bus 15 .

The processor 10 is an arithmetic device that controls the overall operation of the management server 1, controls transmission and reception of data between elements, and performs information processing necessary for executing applications. For example, the processor 10 is a CPU (Central Processing Unit), and executes a program or the like stored in the storage 12 and developed in the memory 11 to carry out each information process.

The memory 11 includes a main memory composed of a volatile memory device such as a DRAM (Dynamic Random Access Memory), and an auxiliary memory composed of a non-volatile memory device such as a flash memory or a HDD (Hard Disc Drive). . The memory 11 is used as a work area for the processor 10, and stores a BIOS (Basic Input/Output System) executed when the management server 1 is started, various setting information, and the like.

The storage 12 stores application programs and various programs such as authentication programs and mining programs for blockchain networks. A database storing data used for each process may be constructed in the storage 22 .

The transmission/reception unit 13 connects the management server 1 to the network 3 . Note that the transmitting/receiving unit 13 may include a short-range communication interface of Bluetooth (registered trademark) and BLE (Bluetooth Low Energy).

The input/output unit 14 is an information input device such as a keyboard and a mouse, and an output device such as a display, which are used as necessary.

A bus 15 is commonly connected to the above elements and transmits, for example, address signals, data signals and various control signals.

<User terminals 2a and 2b>
As shown in FIG. 3, user terminals 2a and 2b (these may be collectively referred to as user terminals 2) execute information processing through communication with the management server 1, thereby providing a content platform system. constitute a part. The user terminal 2 may be, for example, a general-purpose computer such as a workstation or personal computer, or may be a mobile communication device such as a smart phone. The user terminal 2a is the terminal of the content owner 20a, and the user terminal 2b is the terminal of the content user 20b.

The user terminal 2 includes at least a processor 20 , a memory 21 , a storage 22 , a transmission/reception section 23 , an input/output section 24 and the like, which are electrically connected to each other through a bus 25 .

Similar to the management server 1 described above, the processor 20 is an arithmetic device that controls the overall operation of the user terminal 2, controls transmission and reception of data between elements, and performs information processing necessary for executing applications. For example, the processor 20 is a CPU (Central Processing Unit), and executes each information processing by executing a program or the like stored in the storage 22 and developed in the memory 21 .

The memory 21 includes a main memory composed of a volatile memory device such as a DRAM (Dynamic Random Access Memory), and an auxiliary memory composed of a non-volatile memory device such as a flash memory or a HDD (Hard Disc Drive). . The memory 21 is used as a work area for the processor 20, etc., and stores a BIOS (Basic Input/Output System) executed when the user terminal 2 is started, various setting information, and the like.

The storage 22 stores application programs and various programs such as authentication programs and mining programs for blockchain networks. A database storing data used for each process may be constructed in the storage 22 .

The transmitter/receiver 23 connects the user terminal 2 to the network 3 . Note that the transmitting/receiving unit 23 may include a short-range communication interface of Bluetooth (registered trademark) and BLE (Bluetooth Low Energy).

The input/output unit 24 is an information input device such as a keyboard and a mouse, and an output device such as a display, which are used as necessary.

A bus 25 is commonly connected to each of the above elements and transmits, for example, address signals, data signals and various control signals.
<Action>

Next, the operation of each element will be described.

The user terminal 2a transmits to the management server 1 content information including detailed content received from the content owner (copyright holder, etc.) and license conditions imposed on the user regarding the use of the content.

The content information may have other elements. For example, the detailed contents of the content may include author information attached to the content, history of the copyright owner, and other metadata. Also, the license conditions may include the available period, available location, available terminal, number of available users, and license price of the content.

The management server 1 provides content information received from the user terminal 2a to the plurality of user terminals 2b. At the time of provision, for example, it may be displayed on a developed website or within a specific application so that it can be browsed.

The user terminal 2b transmits the usage request received from the user to the management server 1. FIG. A usage request can be sent for each content license condition. For example, in the case of videos, music, etc., if a term such as “use for one day”, “use for three days”, “use for one week”, or “use for one month” is set as the content license condition, the period It is possible to send a usage request every time.

The management server 1 broadcasts the usage permission information including the content and license conditions related to the usage request and the information specifying the user terminal 2b to the blockchain network and shares it with the terminals participating in the network. On the other hand, the management server 1 transmits a content usage permission notification to the user terminal 2b. The use permission notice includes the content data itself, a URI (URL) that allows access to the content data, a password such as a download key, and the like.

The user terminal 2b that has received the usage permission notification refers to the usage permission information broadcast on the blockchain network, receives authentication that the user terminal 2b has the right to use according to the license conditions, and acquires the content. or use.

<Process flow>
The processing flow of this system will be described with reference to FIG.

The user terminal 2a transmits content information including detailed content information and license conditions to the management server 1 (SQ101). The management server 1 stores and registers the content information in its own storage (SQ103). The management server 1 shares the content information with the user terminal 2b (SQ105). The user terminal 2b transmits a usage request for the desired content for each license condition (SQ107). As a result, the transaction regarding the content is established (SQ109). In accordance with the transaction establishment process, transaction information (contents, license conditions, etc.) is shared with the blockchain network (SQ111). At the same time, the management server 1 transmits to the user terminal 2b a notification of permission to use the content, including information for acquiring the content (SQ113). The user terminal 2b thereby acquires the content (SQ115), refers to the blockchain network to confirm that it is authorized to use the content (SQ113), and uses the content.

Regarding the use of content, for example, an electronic signature is applied to the information on the source of the content using the private key of the management server 1, a public key corresponding to the private key is separately generated, and the public key is sent to the user terminal. 2b. Also, authentication is performed by collating the public key hash value of the content included in any Pubkey Script of the first transaction with the public key body of the content included in the Signature Script of the second transaction. Specifically, a hash value of the public key main body of the content included in the Signature Script of the second transaction is generated and confirmed to match the public key hash value of the content included in the Pubkey Script of the first transaction. This makes it possible to authenticate that the user has the right to use the content.

(Other embodiments)
The system according to the embodiment described above can be modified as follows, for example, as shown in FIG. That is, the user terminal 2a sets an initial price for each content license condition. The table in FIG. 5 is a table for managing an ID for specifying content, a content availability period, an initial price, and a current price.
Based on the initial price, the management server 1 sets and updates the usage price of content in response to usage requests from a plurality of user terminals 2b. For example, as shown in FIG. 6, the usage price of content is a floating exchange rate in which the price is determined by the amount of requests from a person who wants to provide the content (user 20a) and a person who wants to use the content (user 20b). ing.

The above-described embodiments are merely examples for facilitating understanding of the present invention, and are not intended to limit and interpret the present invention. It goes without saying that the present invention can be modified and improved without departing from its spirit, and that equivalents thereof are included in the present invention.

1 management server 2 user terminal

Claims (5)

a first receiving unit that receives content information including one or more conditions regarding use of content from the first user terminal;
a second receiving unit that receives , from a second user terminal, a usage request designating the conditions that can be generated for each of the conditions;
sharing the use permission information including the content and the conditions related to the use request received by the second receiving unit and the information specifying the second user terminal with the blockchain network ; a transmission unit that transmits a usage permission notification including information for acquiring the content related to the usage request to the user terminal;
A content license server comprising: 2. The transmitting unit according to claim 1, wherein the transmission unit sets a usage price of the content according to the usage request for each of the conditions of the content, and provides information on the usage price to the user terminal in a usable manner. Content License Server. 3. The contents license server according to claim 2, wherein an initial price for each condition of said contents is stored , and said use price is set based on said initial price in response to said use request . 4. The content license server according to any one of claims 1 to 3, wherein said conditions include at least a usable period, a usable location, a usable terminal, and a usable number of users of said content. the processor
Receiving content information including one or more conditions regarding use of the content from the first user terminal;
Receiving from a second user terminal a usage request specifying the conditions that can be generated for each of the conditions;
sharing the usage permission information including the content and the conditions related to the received usage request and the information specifying the second user terminal to the blockchain network, and transmitting the usage request to the second user terminal; sending an authorization notice containing information for obtaining said content according to;
A method, including

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