JP2023000072A - Artwork trading system, artwork trading method, and artwork trading management apparatus - Google Patents

Abstract

To improve convenience of artists and to improve fluidity of artworks.SOLUTION: An artwork trading system 1 includes: user terminals 30 used by registered users of the artwork trading system 1; a blockchain network 50; an artwork trading management apparatus 10 for managing trading of artworks; and an ownership token management apparatus 40 for managing ownership tokens related to ownership of the artworks. The artwork trading management apparatus 10 performs exhibition registration of an artwork received an exhibition request by an artist who is the registered user. The ownership token management apparatus 40 issues an ownership token corresponding to the exhibition registered artwork, and exhibits the issued ownership token on the blockchain network 50.SELECTED DRAWING: Figure 1

Description

The present invention relates to an art work trading system, an art work trading method, and an art work trading management device.

Block chains are used in fields that require high security, such as cryptocurrency transactions. Blockchain is also called a distributed ledger. A plurality of information processing devices in a blockchain network each generate a blockchain containing various types of information such as transaction information.

Blockchain is also used in the trading of artworks. For example, Patent Literature 1 discloses a technique related to a program that increases the fluidity of artworks and creates an environment in which users can easily appreciate the artworks. Specifically, user-issued certificates of artwork and user-created rulesets are stored on the blockchain. Patent Literature 1 describes that the certificate of the art work and the rule set are collated, and only the art work that has passed the collation is exhibited.

Japanese Patent Application Laid-Open No. 2020-068010

In the configuration of Patent Literature 1, since the certificate and rule set of the artwork stored in the block chain are used, security in the transaction of the artwork can be ensured. However, since the artist needs to issue a certificate for the artwork and create a rule set by himself/herself, it cannot be said that the convenience is sufficient.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an art work trading system and the like that improve convenience for artists and improve the fluidity of art works.

An art work trading system according to a representative embodiment of the present invention includes a user terminal used by a registered user of the art work trading system, a blockchain network, an art work trading management device for managing art work trading, and an art work trading system. and an ownership token management device for managing ownership tokens relating to ownership of the work. The art work transaction management device performs exhibition registration of an art work requested by an artist who is a registered user. The ownership token management device issues an ownership token corresponding to the art work registered for exhibition, and exhibits the issued ownership token to the blockchain network.

According to the present invention, it is possible to improve convenience for artists and improve the fluidity of art works.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structural example of the art work trading system which concerns on Embodiment 1 of this invention. It is a figure which illustrates the structure of an art work transaction management apparatus. FIG. 2 is a diagram illustrating the configuration of a user terminal; FIG. FIG. 4 is a diagram illustrating the configuration of an ownership token management device; FIG. 3 is a diagram illustrating a configuration of a node; FIG. FIG. 4 is a diagram illustrating an image related to user registration; FIG. 2 is a flow diagram illustrating a method of exhibiting an art work according to Embodiment 1 of the present invention; It is a figure which illustrates an art work exhibition request screen. FIG. 4 is a diagram illustrating the structure of an ownership token; BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the outline|summary of the trading method of the artwork which concerns on Embodiment 1 of this invention. FIG. 2 is a flow chart illustrating the art work trading method according to Embodiment 1 of the present invention. FIG. 4 is a flowchart showing another example of the art work trading method according to Embodiment 1 of the present invention. It is a figure explaining the outline|summary of the trading method of the artwork which concerns on Embodiment 2 of this invention.

(Embodiment 1)
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In principle, the same members are denoted by the same reference numerals in all the drawings for describing the embodiments, and the repeated description thereof will be omitted as appropriate.

<Configuration of art work trading system>
FIG. 1 is a diagram illustrating the configuration of an art work trading system according to Embodiment 1 of the present invention. The art work trading system 1 comprises an art work trading management device 10, a user terminal 30, an ownership token management device 40, and a blockchain network 50, as shown in FIG. In FIG. 1, three user terminals 30a (30), 30b (30), 30c (30) access the art work transaction management device 10, and three user terminals 30d (30), 30e (30), 30f (30) ) is accessing the blockchain network 50.

In this embodiment, for example, the ownership of the digital artwork and the ownership of the digital data of the physical artwork digitized from the physical artwork are traded on the blockchain network 50 . Specifically, these ownership rights are tokenized in the ownership token management device 40 based on the instructions of the art work transaction management device 10 and the ownership tokens are traded in the blockchain network 50 . The digital data of the actual artwork is, for example, data such as captured image data or scanned image data of the actual artwork. Various information related to the art work trading system 1 including transaction history of ownership tokens in the block chain network 50 is stored in the block chain 70 .

<<Art work transaction management device>>
The art work transaction management device 10 manages artists who wish to exhibit art works in the art work transaction system 1 and performs processing related to ownership token transactions. Specifically, the art work transaction management device 10 performs user registration of the artist who is the creator of the art work, examination of the art work to be exhibited based on the exhibition request from the artist, and transfer to the ownership token management device 40 based on the examination result. Ownership token issuance instruction, storage of exhibited art works (digital art work and digital data of actual art work), payment of royalties to artists accompanying the completion of ownership token transactions, acquisition of fees, etc.

FIG. 2 is a diagram illustrating the configuration of the art work transaction management device. As shown in FIG. 2, the artwork transaction management device 10 is an information processing device comprising a processor 11, a main memory 13, a storage 15, a communication interface 17, and a monitor 19. FIG. The communication interface 17 is a device that transmits and receives various information between the user terminal 30 and the blockchain network 50 .

The storage 15 includes storage areas such as a program storage area 15a, a user account information storage area 15b, and an artwork information storage area 15c. The program storage area 15a stores various programs such as a basic program for operating the art work trading management device 10 and an art work trading system program for realizing the art work trading system 1. FIG. Therefore, the storage 15 functions as a program recording medium.

The user account information storage area 15b stores user account information of registered users (artists). User account information includes, for example, the registered user's login ID, registered user's login password, registered user name, registered user's login history, registered user's exhibition history (exhibition request history), registered user's contact information (e.g., email address, phone number, postal address, etc.), the registered user's account (eg, a real currency account, or a cryptocurrency wallet account within the blockchain network 50). Note that the user account information may be only part of these. User account information is transmitted to the blockchain network 50 via the communication interface 17 and stored on the blockchain 70 .

The art work information storage area 15c stores, as art work information, a unique art work ID that identifies the art work registered for exhibition, an artist's user ID, the name of the art work, and when the art work is put up (when the ownership token is issued). ), and the royalty ratio that defines the royalty to be paid from the purchaser to the issuer of the ownership token (for example, the operating company of the art work transaction management device 10) when the transaction is concluded. In addition, the art work information storage area 15c stores, as art work information, a registered art work (digital art work or digital data of an actual art work) corresponding to the ownership token put up on the blockchain network 50. . The artwork information may also include, for example, a unique token ID that identifies the ownership token corresponding to the registered artwork (digital artwork or digital data of the actual artwork). An artwork ID may be used as the token ID. Note that the art work information may be composed of only a part of these.

The artwork information, excluding the artwork (digital artwork or digital data of the physical artwork), may be transmitted to the blockchain network 50 via the communication interface 17 and stored on the blockchain 70 .

The main memory 13 holds programs and the like read from the program storage area 15a. The main memory 13 also temporarily holds information received via the communication interface 17 and information transmitted via the communication interface 17 .

The processor 11 reads out and executes a program held in the main memory 13 to provide functional blocks necessary for the art work transaction management device 10 in the art work transaction system 1 to drive each component of the art work transaction management device 10 . Functional blocks, etc. are realized by software. It should be noted that the processor 11 may implement a part of the functions by hardware.

<<User Terminal>>
Next, the user terminal 30 will be explained. The user terminal 30 is a terminal used by a registered user (artist) or a user who wishes to trade ownership tokens on the blockchain network 50 . The registered user accesses the art work transaction management device 10 using the user terminal 30 and makes an exhibition request for the art work (digital art work or digital data of the actual art work) desired to be exhibited. Also, the user accesses the blockchain network 50 and trades (buys, sells) ownership tokens. Artists can also trade ownership tokens of other artists' artwork. In other words, a registered user of the art work trading system 1 may become a user of the blockchain network 50 . The user terminal 30 is, for example, a smart phone, a tablet terminal, a personal computer, or the like. Access to the art work transaction management device 10 and the blockchain network 50 may be performed from a dedicated application or from a website. Also, the user terminal 30 may access the proprietary token management device 40 as necessary.

FIG. 3 is a diagram illustrating the configuration of a user terminal. Note that FIG. 3 shows the configuration of the user terminal 30 using a smartphone as an example. As shown in FIG. 3, the user terminal 30 includes a processor 31, a main memory 33, a storage 35, a communication interface 37, and a display section 39. The communication interface 37 is a device for transmitting and receiving various information between the artwork transaction management device 10 and the blockchain network 50 . The communication interface 37 may transmit and receive various information to and from the ownership token management device 40 .

The storage 35 includes storage areas such as a program storage area 35a and an artwork information storage area 35b. The program storage area 35 a stores various programs such as a basic program for operating the user terminal 30 and applications for accessing the art work transaction management device 10 and the blockchain network 50 . Therefore, the storage 35 functions as a program recording medium.

The art work information storage area 35b stores information about art works that have been registered for exhibition or are scheduled to be exhibited. The artwork information stored in the artwork information storage area 35b is, for example, artworks (digital artworks or digital data of actual artworks), thumbnail images, and the like.

The main memory 33 holds programs and the like read from the program storage area 35a. The main memory 33 also temporarily holds information received via the communication interface 37 and information transmitted via the communication interface 37 .

The processor 31 reads out and executes a program held in the main memory 33 to provide functional blocks for driving each component of the art work trading management apparatus 10, functional blocks necessary for the user terminal 30 in the art work trading system 1, and the like. is realized by software. It should be noted that the processor 31 may implement a part of functions by hardware.

The display unit 39 displays various images on the user terminal 30 . The display unit 39 displays, for example, images related to basic operations of the user terminal 30, images related to applications, images related to the art work trading system 1, and the like. In FIG. 3, the display section 39 and the input section are configured integrally. That is, in the user terminal 30 of FIG. 3, the display section 39 is provided with a touch input function. A predetermined input operation is performed by the user touching the display unit 39 while viewing the displayed image. Note that the display unit 39 and the operation unit may be configured separately.

<<Ownership Token Management Device>>
Next, the ownership token management device 40 will be explained. The ownership token management device 40 performs processing related to transactions of ownership tokens. Specifically, the ownership token management device 40 issues ownership tokens based on instructions from the art work transaction management device 10, exhibits the ownership tokens on the blockchain network 50, and owns them. Acquisition of the transaction history (transaction information) of the right token and notification of the transaction history of the acquired ownership token to the art work transaction management device 10 are performed.

FIG. 4 is a diagram illustrating the configuration of the ownership token management device. As shown in FIG. 4, the ownership token management device 40 is an information processing device comprising a processor 41 , main memory 43 , storage 45 , communication interface 47 and monitor 49 . The communication interface 47 is a device that transmits and receives various types of information to and from the artwork transaction management device 10 , the user terminal 30 , and the blockchain network 50 .

The storage 45 includes storage areas such as a program storage area 45a, an ownership token information storage area 45b, and an ownership token transaction history information storage area 45c. The program storage area 45a stores various programs such as a basic program for operating the ownership token management device 40 and an art work trading system program for realizing the art work trading system 1. FIG. Therefore, the storage 45 functions as a program recording medium.

The ownership token information storage area 45b stores the information of the ownership token issued by the ownership token management device 40. FIG. The ownership token information for each ownership token includes, for example, the token ID, the corresponding art work ID, the owner when the ownership token is issued (the artist who is the exhibitor at the time of primary distribution), and the selling price when the ownership token is issued. , the royalty ratio, the timing of issuing the ownership token, the issuer of the ownership token (for example, the operating company of the art work transaction management device 10 or the operating company of the ownership token management device 40), the account information of the issuer, etc. include. The issuer's account information is, for example, a wallet account within the blockchain network 50 . In addition, the ownership token information in the secondary distribution and subsequent transactions includes the account information of the seller (for example, the wallet account in the blockchain network 50) and the selling price set by the seller. These pieces of information are output from the artwork transaction management device 10 . The token ID may be given by the ownership token management device 40 or may be given in advance by the art work transaction management device 10 . Also, an artwork ID may be used as the token ID. It should be noted that the ownership token information may be only a part of them. By transmitting the above-described ownership token information via the communication interface 47 , the issued ownership token is exhibited to the blockchain network 50 and stored in the blockchain 70 . This allows trading of ownership tokens within the blockchain network 50 .

The ownership token transaction history information storage area 45c stores information on the transaction history of ownership tokens. The proprietary token management device 40 monitors the blockchain network 50 and acquires the transaction history of proprietary tokens issued by itself. When acquiring the transaction history of the proprietary token issued by itself, the ownership token management device 40 stores the acquired transaction history in the ownership token transaction history information storage area 45c. The information on the transaction history of the ownership token includes, for example, the token ID, the seller of the ownership token, the purchaser of the ownership token, the selling price, the time when the transaction was completed, and the like. It should be noted that the information on the transaction history of the ownership token may consist of only a part of these.

The main memory 43 holds programs and the like read from the program storage area 45a. The main memory 43 also temporarily holds information received via the communication interface 47 and information transmitted via the communication interface 47 .

The processor 41 reads out and executes a program held in the main memory 43 to drive each component of the ownership token management device 40 . Functional blocks, etc. are realized by software. It should be noted that the processor 41 may implement a part of the functions by hardware.

Note that middleware that mediates transmission and reception of information may be provided between the ownership token management device 40 and the blockchain network 50 . The ownership token management device 40 may include this middleware. In this case, the ownership token management device 40 separates the device that issues the ownership token from the middleware that mediates the transmission and reception of information. It becomes a configuration that includes the body.

<<Blockchain Network>>
Next, the blockchain network 50 will be described. In the blockchain network 50, transactions of ownership tokens put up by the ownership token management device 40 are conducted. Also, in the block chain network 50, a block chain 70 is generated, and various information related to the art work trading system 1 including transaction history of ownership tokens is stored in the block chain 70.

As shown in FIG. 1, the blockchain network 50 comprises multiple nodes 60 . Although five nodes 60a (60), 60b (60), 60c (60), 60d (60), and 60e (60) are illustrated in FIG. 1, the number of nodes 60 is not limited to this. These nodes 60 are connected to each other, for example, in a peer-to-peer manner.

Each node 60 in the blockchain network 50 stores information sent from the art work transaction management device 10, the transaction history of ownership tokens in the blockchain network 50, and cryptocurrency remittances between wallet accounts when transactions are completed. Various information related to the art work trading system 1 including history etc. is shared, and a block chain including such information is generated every time a predetermined time elapses. Thus, each node 60 stores various information related to the art work trading system 1 in the blockchain.

FIG. 5 is a diagram illustrating the configuration of a node. As shown in FIG. 5 , the node 60 is an information processing device that includes a processor 61 , main memory 63 , storage 65 , communication interface 67 and monitor 69 . The communication interface 67 is a device that transmits and receives various information to and from the other node 60 , the ownership token management device 40 , the art work transaction management device 10 and the user terminal 30 .

The storage 65 includes storage areas such as a program storage area 65a and a blockchain storage area 65b. The program storage area 65a stores various programs such as a basic program for operating the node 60 and a block chain program related to generation of a block chain. Therefore, the storage 65 functions as a program recording medium.

The blockchain storage area 65b stores the blockchain 70 generated at the node 60. FIG. Each node 60 generates the latest block chain every time a predetermined period of time elapses. Therefore, the block chain 70 in the block chain storage area 65b is updated to the latest block chain every time a predetermined period of time elapses.

The main memory 63 holds programs and the like read from the program storage area 65a. The main memory 63 also temporarily holds information received via the communication interface 67, generated block chains, information transmitted via the communication interface 67, and the like.

The processor 61 reads out and executes a program held in the main memory 63 to realize functional blocks for driving each component of the node 60, functional blocks for blockchain, etc. by software. It should be noted that the processor 61 may implement a part of the functions by hardware. The processor 61 uses the block chain functional block to generate the latest block chain every time a predetermined period of time elapses. Specifically, the processor 61 generates a block chain containing information received within the latest predetermined time period, and connects the generated block chain with the previous block chain to generate the latest block chain.

<User registration>
Next, a user registration method for the art work trading system 1 will be described. FIG. 6 is a diagram illustrating a user registration screen. A user registration request screen 110 is displayed on the display unit 39 of the user terminal 30 . As shown in FIG. 6, the user registration request screen 110 includes, for example, a registration requesting user name input field 111, a registration requesting user contact information input field 113, a registration requesting user account information input field 115, a password input field 117, A send button 119 is provided.

A user who wishes to register with the art work trading system 1 activates a pre-installed dedicated application for the art work trading system, or accesses the art work trading system 1 from a website, and sends a user registration request to the user terminal 30. Display the screen 110 . The registration requesting user touches the send button 119 after inputting predetermined contents into the input fields (111, 113, 115, 117) of the user registration request screen 110 displayed. As a result, the input contents are transmitted to the art work transaction management device 10 as registration requesting user information.

When receiving the registration requesting user information from the user terminal 30, the art work transaction management apparatus 10 assigns a unique user ID to the registration requesting user. The art work trading management device 10 stores the registration requesting user information and the assigned user ID as user account information in the user account information storage area 15b, and registers the registration requesting user as a user of the art work trading system 1. FIG. The artwork transaction management device 10 also transmits the user account information of the registered user to the blockchain network 50 and causes the blockchain 70 to store the user account information. When these processes are completed, the art work transaction management device 10 notifies the user requesting registration of the assigned user ID and notifies that the registration has been completed. It should be noted that account information does not have to be entered at the time of user registration. The password may be notified from the art work transaction management device 10 together with the user ID.

<Exhibition of art works>
Next, a method for exhibiting art works will be described. FIG. 7 is a flowchart illustrating a method for exhibiting art works according to Embodiment 1 of the present invention. FIG. 7 shows steps S110 to S150 as a step (first step) S10 relating to the exhibition of an art work.

In step S110, a registered user who wishes to exhibit an artwork operates the user terminal 30 and requests the art work trading system 1 to exhibit the artwork. An artist (registered user) who wishes to exhibit an artwork can, for example, enter predetermined contents on an artwork exhibition request screen 130 displayed on the display unit 39 to exhibit the artwork to the operating company of the artwork transaction management device 10 . make a request. In addition to this, an art work exhibition request may be made by an artist sending an email containing the contents of the art work exhibition request screen 130 to the operating company of the art work transaction management device 10. .

FIG. 8 is a diagram illustrating an art work exhibition request screen. The art work exhibition request screen 130 includes, for example, an exhibition art work image attachment field 131 for attaching an image of the art work (digital art work or digital data of an actual art work) to be exhibited, a work name input field 133, and a sales price input field. A field 135 and a send button 139 are provided. The exhibitor touches the send button 139 after inputting predetermined contents into the input fields (131, 133, 135) of the displayed art work exhibition request screen 130. FIG. As a result, the input contents are transmitted to the art work transaction management device 10 as information on the art work desired to be exhibited. In this way, an exhibition request for an art work is made. An address specifying the storage location of the image of the art work may be entered in the exhibition art work image attachment column 131 .

In step S120, the art work requested by the artist to be exhibited is examined. Then, if the examination is not passed (NO), the exhibition registration of the art work to be exhibited is not performed, and the processing relating to the exhibition of the art work ends. On the other hand, if the examination is passed (YES), the process proceeds to step S130, and the processing related to exhibition registration of the art work desired to be exhibited continues.

In step S130, the art work transaction management device 10 outputs the ownership token information required to issue the ownership token TK, and issues the ownership token of the art work for which the exhibition request has been made to the ownership token management device. 40. Then, the ownership token management device 40 issues the ownership token TK based on the instruction from the art work transaction management device 10 and puts up the ownership token TK to the blockchain network 50 . The art work transaction management device 10 also transmits the image of the art work corresponding to the issued ownership token TK to the ownership token management device 40 . The ownership token manager 40 uploads the image of the corresponding artwork along with the ownership token to the blockchain network 50 . As an image uploaded to the blockchain network 50, for example, an image obtained by compressing the data volume of an artwork is used. This image is also used as a thumbnail image of the ownership token TK to be exhibited. This image is generated by an information processing terminal such as the user terminal 30 owned by the artist, an imaging device, or the artwork transaction management device 10 .

FIG. 9 is a diagram illustrating the configuration of an ownership token. As shown in FIG. 9, the ownership token TK includes, for example, information specifying the ownership token TK (eg, token ID), information specifying the corresponding artwork (eg, artwork ID), and the location of the ownership token TK. Information identifying a voter (e.g., owner ID (user ID of an artist who is an exhibitor in primary distribution)), transaction history of the ownership token TK, information identifying an issuer of the ownership token (e.g., issuer ID), Includes information such as sales price, royalty rate, issuer account information, etc. Note that the registered art work and the issued ownership token TK are in one-to-one correspondence, so the ownership token TK is a so-called non-fungible token (NFT: Non-Fungible Token). In this way, the art work transaction management device 10 tokenizes the art work registered for exhibition and sells the ownership token TK, thereby improving the liquidity of the art work.

In step S140, when the artwork ownership token TK and the corresponding image are uploaded to the blockchain network 50, exhibition registration of the requested art work is performed based on the exhibition-requested artwork information. The art work transaction management device 10 assigns a unique art work ID that identifies the art work to the art work (digital art work or digital data of the actual art work) requested to be exhibited. The art work transaction management device 10 stores information such as the art work ID, the user ID of the artist who is the creator of the art work, the title of the art work, the selling price of the art work, etc. as art work information. The information is stored in the area 15c, and the exhibition registration of the art work is performed. Note that the artwork ID may be given in any of steps S110 to S130. Also, the artwork information may be stored in the blockchain 70 .

In step S150, the art work transaction management device 10 notifies the user terminal 30 of the artist that exhibition registration of the requested art work has been completed. In this way, the art work exhibition processing is performed.

<How to trade art works>
<<Overview of art work transactions>>
Next, a method of trading art works registered in the art work trading system 1 will be described. FIG. 10 is a diagram explaining an overview of the art work trading method according to Embodiment 1 of the present invention. FIG. 10 shows an artist exhibiting an art work, an operating company of the art work trading system 1, and a purchaser of the art work. The operating company in FIG. 10 includes both the operating company of the art work transaction management device 10 and the operating company of the ownership token management device 40 for convenience of notation. Note that these operating companies may be the same.

When an artist produces an art work, the artist puts up the art work in the art work trading system 1. - 特許庁The operating company of the art work transaction management device 10 examines the art work for which the exhibition request is made, and issues an instruction to issue an ownership token for the art work that has passed the examination. The operating company of the ownership token management device 40 issues the ownership token TK of the art work that has passed the screening according to the ownership token issuance instruction, and puts up the ownership token TK on the blockchain network 50 . The first purchaser then purchases the ownership token TK from the operating company of the art work transaction management device 10 within the blockchain network 50 .

When the transaction of the ownership token TK is established, information such as the owner of the ownership token TK and transaction history recorded in the ownership token TK is updated. Ownership of the work of art is transferred to the first purchaser when the ownership is renewed from the artist to the first purchaser.

Further, when the transaction of the ownership token TK is completed, the first purchaser pays the operating company of the art work transaction management device 10 . The price at this time is the purchase price of the ownership token TK paid by the first purchaser to the exhibitor (the same amount as the selling price), and the royalties paid by the first purchaser to the operating company of the art work transaction management device 10. Including both. A royalty is calculated by multiplying a preset royalty rate by a sales price. Then, the operating company of the art work transaction management device 10 pays the artist the amount obtained by deducting the commission of the operating company of the art work transaction management device 10 from the royalty and the purchase price. The amount obtained by subtracting the commission of the operating company of the art work transaction management device 10 from the royalty is the artist's royalty that can be received when the transaction of the ownership token TK is completed. Thus, when the transaction of the ownership token TK is established, the operating company of the art work transaction management device 10 can earn commission income, and the artist can earn royalties. The royalty ratio is defined, for example, as a predetermined percentage of the sales price, and the commission ratio is defined as a predetermined percentage of the royalty. For example, these ratios may be set as art work information when the art work is registered for exhibition, or may be defined in the terms and conditions of the art work trading system 1 created by the operating company of the art work trading management device 10. . In this way, the primary distribution of the artwork (ownership token TK) from the operating company of the artwork transaction management device 10 to the first purchaser is performed.

Payment from the first purchaser to the operating company of the art work transaction management device 10 is made in cryptocurrency using a wallet account within the blockchain network 50 . That is, the processing related to the transaction of the ownership token TK and the payment of the price are performed within the blockchain network 50 . Then, the operating company of the art work transaction management device 10 may pay the royalty and the purchase price to the artist in cryptocurrency or in real currency.

The first purchaser then relists the ownership token TK to the blockchain network 50 and sells the ownership token TK to the second purchaser. When the transaction of the ownership token TK is established, information such as the owner of the ownership token TK and transaction history recorded in the ownership token TK is updated. Once the ownership is renewed from the first purchaser to the second purchaser, ownership of the artwork is transferred to the second purchaser.

When the transaction of the ownership token TK is established, the purchase price is paid from the second purchaser to the first exhibitor. A royalty is then paid from the second purchaser to the operating company of the art work transaction management device 10 . Then, the operating company of the art work transaction management device 10 pays to the artist the amount obtained by deducting the fee from the royalty as the artist's royalty. In this way, the art work (ownership token TK) is secondary distributed from the first purchaser to the second purchaser. The subsequent distribution (tertiary distribution...) is the same as the secondary distribution.

<< flow of art work transaction method (primary distribution) >>
FIG. 11 is a flow diagram illustrating the art work trading method according to Embodiment 1 of the present invention. FIG. 11 is a flow diagram for primary distribution of art works. In FIG. 11, steps S10 to S60 are executed as a flow of primary distribution of art works. Step S10 is a step related to exhibition registration of art works. Since the details of step S10 have already been described using FIG. 7, the description of step S10 is omitted here. The following steps S20-S60 are the second steps involved in selling the artwork.

At step S20, in the blockchain network 50, the ownership token TK is sold. A person who wishes to purchase the artwork (ownership token) operates the user terminal 30 to access the blockchain network 50 . Then, the purchaser refers to information such as the thumbnail image of the art work displayed corresponding to the exhibited ownership token TK displayed on the user terminal 30 and the sales price, etc., and purchases the ownership token TK. to select. When the purchaser wishes to purchase the ownership token TK, the transaction of the ownership token TK is completed (step S30). During this time, the login time, information identifying the purchased ownership token (for example, token ID, etc.), transaction completion date and time, purchase amount (selling price), and other action history of the purchaser are stored in the block chain 70 . User IDs, passwords, and the like may be different between the blockchain network 50 and the art work transaction management device 10 or the like.

When the transaction of the ownership token TK is established, the information recorded in the ownership token TK is updated (step S40). Specifically, the owner of the ownership token TK is changed from the artist to the purchaser, and the date and time when the transaction of the ownership token TK is completed is recorded. Thereby, the ownership of the artwork corresponding to the ownership token TK is transferred to the purchaser of the ownership token TK. The ownership token TK with updated information continues to be stored in the blockchain 70 . When the transaction of the ownership token TK is established and the information of the ownership token TK is updated, the ownership token management device 40 acquires the transaction history (transaction information) of the ownership token and stores the transaction history of the ownership token. is notified to the art work transaction management device 10.

Further, when the transaction of the ownership token TK is established, the purchase price (purchase price and royalties) is paid from the account of the purchaser (the first purchaser in FIG. 10) to the account of the operating company of the art work transaction management device 10 (step S50). A cryptocurrency is used to pay for the ownership token TK. Then, the operating company of the art work transaction management device 10 obtains commission income accompanying the sale of the ownership token TK from the royalties. Further, the operating company of the art work transaction management device 10 pays the purchase price (the same amount as the selling price) from the account of the operating company of the art work transaction management device 10 to the account of the artist and the royalties after deducting the commission (step S60). .

Note that the notification of the ownership token transaction history from the ownership token management device 40 and the payment from the purchaser are processes independent of each other. For this reason, the art work transaction management device 10 receives a notification of the transaction history of the ownership token from the ownership token management device 40, and when payment has been made by the purchaser, the art work transaction management device 10 pays the purchase price to the artist. and royalties may be paid.

<< flow of art work transaction method (secondary distribution, etc.) >>
Next, the secondary distribution of art works and the subsequent flow will be explained. FIG. 12 is a flowchart showing another example of the art work trading method according to Embodiment 1 of the present invention. Since FIG. 12 is similar to FIG. 11, differences from FIG. 11 will be mainly described.

The owner of the ownership token TK (eg, the first purchaser in FIG. 1) relists the ownership token TK to the blockchain network 50 (step S10A), and the ownership token TK is traded on the blockchain network 50. (Step S20). At this time, the exhibitor is the purchaser (first purchaser or the like) immediately before the ownership token TK, and the purchaser is the second purchaser or the like. When the transaction of the ownership token TK is established (step S30), the information of the ownership token TK is updated (step S40).

Then, the purchase price is paid from the account of the purchaser (for example, the second purchaser in FIG. 10) to the account of the exhibitor (for example, the first purchaser in FIG. 10), and the purchaser's account is transferred to the issuer of the ownership token TK. (step S50A). Then, the royalty after deducting the commission is paid from the account of the operating company of the art work transaction management device 10 to the account of the artist (step S60A).

In the secondary distribution and thereafter, the art work transaction management device 10 receives notification of the transaction history of the ownership token from the ownership token management device 40 and also receives payment (royalty) from the purchaser. If there is, the royalty may be paid to the artist.

<Main effects of the present embodiment>
According to this embodiment, the ownership token TK of the artwork is issued, and the artwork is distributed by trading the ownership token TK. In addition, the art work transaction management device 10 registers the art work to be exhibited based on the information on the art work to be exhibited transmitted from the user terminal 30, and the ownership token management device 40 controls the art work transaction management device 10 Issue the ownership token TK of the art work for which the exhibition request has been made based on the instructions of . According to this configuration, the art work desired to be exhibited can be registered for exhibition only by inputting and transmitting the information of the art work desired to be exhibited, thereby reducing the burden on the artist at the time of exhibition registration and improving the convenience of the artist. becomes possible. In addition, since the art work is distributed by trading the ownership token TK, it is possible to improve the liquidity of the art work.

Further, according to the present embodiment, it is possible to perform secondary distribution of the art work by re-exhibiting the ownership token TK. Also, in the secondary distribution and the like, since the operating company of the art work transaction management device 10 pays the artist royalties, it is possible to return part of the sales proceeds to the artist following the primary distribution.

(Embodiment 2)
Next, Embodiment 2 will be described. In the present embodiment, one form of transaction of a substantial artwork installed in a public space will be described. Such a substantial art work is also called a public art work. Also in this embodiment, the construction of the art work trading system is the same as in the first embodiment. Also, the method of trading public art works is the same as in the first embodiment, and public art works are distributed by trading ownership tokens TK.

FIG. 13 is a diagram for explaining an outline of a public art work trading method according to Embodiment 2 of the present invention. FIG. 13 is similar to FIG. 10 except that the public art work is donated by the artist to the trustee. Trustees of public art works are, for example, local governments such as municipalities.

In this embodiment, the public art work is donated by the artist to the donor, and ownership of the public art work is transferred to the recipient. On the other hand, the ownership of the digital data of the public art work which is digitized from the public art work is tokenized, and the ownership token TK of the public art work is traded on the blockchain network 50 .

Also in this embodiment, effects similar to those of the above-described embodiments can be obtained. In addition, in this embodiment, artists and purchasers of primary distribution will display their names, etc. on plates installed adjacent to public art works, pamphlets, websites, etc. that introduce public art works. can be done. However, secondary distribution and subsequent purchasers cannot display their names, etc. on public art.

In addition, the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above embodiments have been described in detail for easy understanding of the present invention, and may not necessarily include all the configurations described.

In addition, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, modification, or the like. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. It should be noted that each element and the relative size between the elements described in the drawings are simplified and idealized in order to explain the present invention in an easy-to-understand manner, and may become more complicated in terms of implementation.

1... art work trading system, 10... art work trading management device, 30... user terminal, 40... ownership token management device, 50... blockchain network, 60... node, 70... blockchain, TK... ownership token.

Claims (11)

a user terminal used by a registered user of the art work trading system;
blockchain network and
an art work transaction management device for managing art work transactions;
an ownership token management device for managing ownership tokens relating to ownership of the artwork;
with
The art work transaction management device performs exhibition registration of the art work requested by the artist who is the registered user,
The ownership token management device issues the ownership token corresponding to the art work registered for exhibition, and exhibits the issued ownership token on the blockchain network.
Art work trading system. In the art work trading system according to claim 1,
said ownership token includes information identifying an owner of said ownership token and information of a transaction history of said ownership token;
When a transaction of the ownership token is established, information identifying the owner of the ownership token and information of the transaction history of the ownership token are updated.
Art work trading system. In the art work trading system according to claim 1,
The user terminal transmits information on the artwork desired to be exhibited input by the artist to the artwork transaction management device,
The art work transaction management device instructs the issuance of the ownership token corresponding to the art work to be exhibited based on the information on the art work to be exhibited, and registers the art work to be exhibited.
Art work trading system. In the art work trading system according to claim 1,
The artwork transaction management device instructs the ownership token management device to issue the ownership token;
Art work trading system. In the art work trading system according to claim 1,
The user terminal of the artist instructs the ownership token management device to issue the ownership token;
Art work trading system. In the art work trading system according to claim 1,
The art work is a digital art work or digital data of the physical art work digitized from the physical art work,
Art work trading system. In the art work trading system according to claim 6,
The physical art work is a public art work installed in a public space,
Art work trading system. a step in which the user terminal transmits information on the artwork desired to be exhibited entered by the artist to the artwork transaction management device and makes an exhibition request;
a step in which the art work transaction management device performs exhibition registration of the art work for which the exhibition request has been made;
a step in which the ownership token management device issues the ownership token relating to the ownership of the art work registered for exhibition and puts up the issued ownership token on the blockchain network;
is equipped with
Artwork trading method. In the art work trading method according to claim 8,
The ownership token management device issues the ownership token based on an instruction to issue the ownership token from the art work transaction management device.
Artwork trading method. In the art work trading method according to claim 8,
The ownership token management device issues the ownership token based on an instruction to issue the ownership token from the user terminal.
Artwork trading method. An art work transaction management device for managing art work transactions in an art work transaction system,
Perform exhibition registration of an art work for which an exhibition request has been made by an artist who is a registered user of the art work trading system, and issue an instruction to issue an ownership token regarding the ownership of the art work registered for exhibition to the ownership token management device. conduct,
Art work transaction management device.

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