Method, system and non-transitory computer-readable recording medium for providing nft publishing platform service

Abstract

According to one aspect of the present invention, a method for providing an NFT publishing platform service is provided, comprising the steps of: specifying content provided in digital signage and obtaining NFT history information regarding said content; and supporting a transaction for an NFT regarding said content through a marketplace linked to said digital signage by referring to the NFT history information regarding said content.

Description

Technology Field

[0001] The present invention relates to a method, a system, and a non-transient computer-readable recording medium for providing an NFT publishing platform service. Background Technology

[0002] Since the emergence of cryptocurrencies, blockchain technology has advanced and is being utilized in various fields. In particular, in the copyright sector, Non-Fungible Token (NFT) technology, which involves non-fungible tokens generated based on the transparency and reliability of blockchain, is attracting attention.

[0003] An NFT utilizes blockchain cryptocurrency technology; it stores a digital file within a token that is issued only once, and because all transactions are recorded on the blockchain network, forgery and alteration are impossible, allowing one to claim ownership of the digital file through the NFT. However, existing NFT technology has a limitation in that ownership can be claimed even for counterfeit goods that merely imitate another person's creation by issuing tokens.

[0004] In addition, as NFT technology gains attention, many artists, creators, and game developers are issuing NFTs for various creative works. However, simply issuing a creative work as an NFT to give it scarcity does not create value or allow it to be sold. Therefore, the importance of NFT publishing to connect with buyers who recognize the value of such creative works is gradually increasing.

[0005] Meanwhile, digital signage or smart signage refers to digital video devices installed in locations such as restaurants, offline stores, airports, shopping malls, subways, bus stops, and hotels to provide advertising content intended by advertisers. Given that content synchronized and provided through digital or smart signage can be widely distributed and easily utilized anywhere domestically or internationally, there is growing interest in NFT publishing using digital or smart signage.

[0006] Accordingly, the inventor(s) propose a technology that identifies content provided in digital signage, obtains NFT history information regarding the content, and supports trading of NFTs regarding the content through a marketplace linked to the digital signage by referring to the NFT history information regarding the content. Prior art literature

[0007] Korean Patent Publication No. 10-2455933 (October 13, 2022) The problem to be solved

[0008] The present invention aims to solve all the problems of the aforementioned prior art.

[0009] In addition, the present invention has another objective of supporting the issuance of NFTs regarding content through an augmented reality interface linked with a marketplace regarding content provided in digital signage.

[0010] In addition, the present invention has another objective of enabling transactions regarding ownership and usage rights of NFTs related to content without temporal or spatial constraints by connecting creators and buyers through an augmented reality interface linked to a marketplace regarding content provided in digital signage.

[0011] In addition, another objective of the present invention is to secure the buyer's trust in the NFT by verifying the originality of the content using identification information regarding the content and identification information regarding the digital signage. means of solving the problem

[0012] A representative configuration of the present invention for achieving the above objective is as follows.

[0013] According to one aspect of the present invention, a method for providing an NFT publishing platform service is provided, comprising the steps of: specifying content provided in digital signage and obtaining NFT history information regarding said content; and supporting a transaction for an NFT regarding said content through a marketplace linked to said digital signage by referring to the NFT history information regarding said content.

[0014] According to another aspect of the present invention, a system for providing an NFT publishing platform service is provided, comprising: a content acquisition unit that identifies content provided in digital signage and acquires NFT history information regarding said content; and a content management unit that supports trading of said NFTs regarding said content through a marketplace linked with said digital signage by referring to the NFT history information regarding said content.

[0015] In addition to this, other methods for implementing the present invention, other systems, and non-transient computer-readable recording media for recording a computer program for executing said methods are further provided. Effects of the invention

[0016] According to the present invention, it is possible to issue an NFT regarding content through an augmented reality interface linked to a marketplace regarding content provided in digital signage.

[0017] In addition, according to the present invention, by connecting creators and buyers through an augmented reality interface linked to a marketplace regarding content provided in digital signage, it becomes possible to trade ownership and usage rights of NFTs regarding content without temporal or spatial constraints.

[0018] In addition, according to the present invention, the buyer's trust in the NFT can be secured by verifying the originality of the content using identification information regarding the content and identification information regarding the digital signage. Brief explanation of the drawing

[0019] FIG. 1 is a diagram showing the schematic configuration of an overall system for providing an NFT publishing platform service according to one embodiment of the present invention. FIG. 2 is a drawing illustrating in detail the internal configuration of a service provision system according to one embodiment of the present invention. Specific details for implementing the invention

[0020] The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that various embodiments of the invention are different but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be modified from one embodiment to another without departing from the spirit and scope of the invention. It should also be understood that the location or arrangement of individual components within each embodiment may be modified without departing from the spirit and scope of the invention. Accordingly, the following detailed description is not meant to be limiting, and the scope of the invention should be understood to encompass the scope claimed by the claims and all equivalents thereof. Similar reference numerals in the drawings indicate identical or similar components across various aspects.

[0021] Hereinafter, in order to enable a person skilled in the art to easily practice the present invention, various preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0022] In this specification, "contents" or "content" is a collective concept for digital information or individual information elements consisting of characters, codes, voice, sound, images, videos, etc., accessible through a communication network. Such content may be composed of data such as, for example, text, images, videos, audio, links (for example, web links), or a combination of at least two of these data.

[0023] Configuration of the entire system

[0024] FIG. 1 is a diagram showing the schematic configuration of an overall system for providing an NFT publishing platform service according to one embodiment of the present invention.

[0025] As illustrated in FIG. 1, the entire system according to one embodiment of the present invention may include a communication network (100), a service providing system (200), a device (300), and digital signage (400).

[0026] First, a communication network (100) according to one embodiment of the present invention can be configured regardless of the mode of communication, such as wired communication or wireless communication, and can be configured as various communication networks such as a Local Area Network (LAN), a Metropolitan Area Network (MAN), or a Wide Area Network (WAN). Preferably, the communication network (100) referred to in this specification may be the known Internet or the World Wide Web (WWW). However, the communication network (100) may include at least a known wired / wireless data communication network, a known telephone network, or a known wired / wireless television communication network, without being limited thereto.

[0027] For example, the communication network (100) may be a wireless data communication network and may implement conventional communication methods such as WiFi communication, WiFi-Direct communication, Long Term Evolution (LTE) communication, 5G communication, Bluetooth communication (including Bluetooth Low Energy (BLE) communication), infrared communication, ultrasonic communication, etc., in at least a part thereof. As another example, the communication network (100) may be an optical communication network and may implement conventional communication methods such as Light Fidelity (LiFi), etc., in at least a part thereof.

[0028] Next, a service providing system (200) according to one embodiment of the present invention can specify content provided in digital signage, obtain NFT history information regarding the content, and perform a function to support trading of NFTs regarding the content through a marketplace linked with digital signage by referring to the NFT history information regarding the content.

[0029] The configuration and functions of the service provision system (200) according to the present invention will be examined in detail through the following detailed description.

[0030] Next, the device (300) according to one embodiment of the present invention is a digital device that includes a function to communicate after connecting to a service providing system (200), and any digital device equipped with memory means and equipped with a microprocessor to have computational capabilities, such as a smartphone, tablet, smart watch, smart band, smart glasses, desktop computer, laptop computer, workstation, PDA, web pad, mobile phone, etc., can be adopted as the device (300) according to the present invention.

[0031] In particular, the device (300) may include an application (not shown) that enables a user to receive a service according to the present invention from a service providing system (200). Such an application may be downloaded from the service providing system (200) or an external application distribution server (not shown). Meanwhile, the nature of such an application may generally be similar to the content acquisition unit (210), content management unit (220), communication unit (230), and control unit (240) of the service providing system (200) as described below. Here, at least a part of the application may be replaced with a hardware device or firmware device capable of performing substantially the same or equivalent functions as needed.

[0032] Next, according to one embodiment of the present invention, the digital signage (400) may include a set-top box (not shown), which is a component that performs the function of communicating with a service provision system (200) or a content management server (not shown) and controlling content to be provided to people. Additionally, according to one embodiment of the present invention, the digital signage (400) may further include display means such as an LCD panel or an OLED panel, and speakers for sound output.

[0033] According to one embodiment of the present invention, digital signage (400) may be installed in public places such as restaurants, offline stores, airports, shopping malls, subways, bus stops, and hotels, but it should be noted that this is merely an example and the places where the digital signage (400) according to the present invention is installed are not necessarily limited to those listed above.

[0034] Configuration of the service provision system

[0035] Below, we will examine the internal configuration of the service providing system (200) that performs important functions for the implementation of the present invention and the functions of each component.

[0036] FIG. 2 is a drawing illustrating in detail the internal configuration of a service providing system (200) according to one embodiment of the present invention.

[0037] As illustrated in FIG. 2, a service provision system (200) according to one embodiment of the present invention may be configured to include a content acquisition unit (210), a content management unit (220), a communication unit (230), and a control unit (240). According to one embodiment of the present invention, the content acquisition unit (210), the content management unit (220), the communication unit (230), and the control unit (240) may be program modules, at least some of which communicate with an external system (not shown). Such program modules may be included in the service provision system (200) in the form of an operating system, an application program module, or other program modules, and may be physically stored in various known storage devices. Additionally, such program modules may be stored in a remote storage device capable of communicating with the service provision system (200). Meanwhile, such program modules encompass, but are not limited to, routines, subroutines, programs, objects, components, data structures, etc., that perform specific tasks or execute specific abstract data types as described below according to the present invention.

[0038] Meanwhile, according to one embodiment of the present invention, the service providing system (200) may perform the function of providing source data of content provided in the digital signage (400), but a content management server (not shown) that performs the function of providing source data of content may exist as a separate component from the service providing system (200).

[0039] Meanwhile, although the service provision system (200) has been described as above, this description is exemplary, and it is obvious to those skilled in the art that at least some of the components or functions of the service provision system (200) may be realized or included within the device (300), digital signage (400), or content management server (not shown) as needed.

[0040] First, a content acquisition unit (210) according to one embodiment of the present invention can perform the function of specifying content provided in a digital signage (400).

[0041] Here, a user may use a device (300) to capture at least a portion of the content provided on the digital signage (400), and a content acquisition unit (210) according to one embodiment of the present invention may identify the content from the captured video or image. For example, the content according to one embodiment of the present invention may be identified from the captured video or image using an image processing technique (e.g., a segmentation technique). As another example, the content according to one embodiment of the present invention does not necessarily have to include all of the above content in the video or image captured by the device (300), but may be identified if it includes only enough to allow identification information regarding the content to be estimated.

[0042] Here, the image (or video) acquired by the content acquisition unit (210) according to one embodiment of the present invention may include an identification marker for content provided by the digital signage (400). According to one embodiment of the present invention, the identification marker for content provided by the digital signage (400) may refer to an identifier assigned to the content in order to identify the content. According to one embodiment of the present invention, such an identification marker for content may refer to an identifier that enables accurate identification of what the content is.

[0043] In addition, according to one embodiment of the present invention, the content provided in the digital signage (400) may change as time, place, or surrounding conditions change, and may also change dynamically by user operation.

[0044] In addition, according to one embodiment of the present invention, an identification marker for such content may be expressed in a format such as a graphic and included in a part of the content (e.g., a video), but a watermark that is not visible to the naked eye may be included in the content as an identification marker for the content in order to prevent affecting the content, such as by obscuring a part of the content.

[0045] For example, according to one embodiment of the present invention, in order to minimize the impact of an identification marker regarding content on the content, an image acquired by a content acquisition unit (210) according to one embodiment of the present invention may include an identification marker regarding such content at a predetermined frame interval. For example, in an image acquired by a content acquisition unit (210) according to one embodiment of the present invention, a frame including an identification marker may appear once every 10 frames.

[0046] However, the format of the identification marker included in the image or video acquired by the content acquisition unit (210) according to one embodiment of the present invention, or the method of acquiring the image or video (or the identification marker regarding the content included in the image or video), is not limited to the contents described above and may be varied within the scope of achieving the purpose of the present invention.

[0047] In addition, the content acquisition unit (210) according to one embodiment of the present invention can perform the function of acquiring NFT history information regarding specific content.

[0048] For example, NFT history information regarding content according to one embodiment of the present invention may include information regarding the originality of the specified content, NFT issuance history information regarding the specified content (i.e., information regarding whether an NFT regarding the specified content has been issued), information regarding product orders regarding the specified content, and information regarding the transaction history of ownership and usage rights of the NFT regarding the specified content.

[0049] Meanwhile, a content acquisition unit (210) according to one embodiment of the present invention can estimate identification information regarding content and identification information regarding digital signage (400) based on at least one of information regarding the location of a device associated with the shooting of content and an identification marker included in an image regarding content.

[0050] For example, identification information regarding content according to one embodiment of the present invention is information capable of identifying the content, and may include the file name of the content, the name of the content, metadata of the content, etc., but is not limited thereto. A content acquisition unit (210) according to one embodiment of the present invention can identify at least one content associated with the identification marker among the content included in the content pool based on the identification marker regarding the above content, and can estimate identification information regarding the content through a method of comparison with the specified content. Furthermore, according to one embodiment of the present invention, the content pool may exist as a component of the service provision system (200), but may also be included in a content management server (not shown) which is a component separate from the service provision system (200).

[0051] In another example, a content acquisition unit (210) according to one embodiment of the present invention can identify at least one digital signage (400) existing within a predetermined distance from the location based on information regarding the location of the above device (300), and can estimate identification information regarding the digital signage (400) by comparing the specified content with an image provided by the digital signage (400) and / or an image organized in the at least one digital signage (400). Here, when the digital signage (400) is specifically identified (i.e., when identification information regarding the digital signage (400) is estimated), the content acquisition unit (210) according to one embodiment of the present invention can acquire information regarding buildings, facilities, environments, etc., around the digital signage (400) as information regarding the surrounding space of the digital signage (400). According to one embodiment of the present invention, information regarding the surrounding space of the corresponding digital signage (400) may be obtained from the corresponding digital signage (400) that stores the information in advance.

[0052] Additionally, a content acquisition unit (210) according to one embodiment of the present invention can acquire NFT history information regarding content by referring to at least one of identification information regarding content and identification information regarding digital signage (400).

[0053] For example, a content acquisition unit (210) according to one embodiment of the present invention may acquire information regarding the originality of a specified content by referring to at least one of identification information regarding the content and identification information regarding the digital signage (400).

[0054] Specifically, a content acquisition unit (210) according to one embodiment of the present invention can verify the originality and copyability of a specific content based on an identification marker regarding the content, identify the corresponding digital signage (400) based on information regarding the location of the device (300), and obtain information regarding the originality of the specific content by verifying the originality and copyability of the content provided in the corresponding digital signage (400) by referring to the identification information regarding the digital signage (400).

[0055] Through this, the originality of the content can be double-verified using identification information regarding the content and identification information regarding the digital signage (400) according to one embodiment of the present invention, thereby achieving the effect of securing the buyer's trust in the issuance history of the NFT.

[0056] Meanwhile, a content acquisition unit (210) according to one embodiment of the present invention can perform a function of preprocessing an image related to the content. And, according to one embodiment of the present invention, such preprocessing may include at least one of image simplification and feature detection.

[0057] Specifically, preprocessing according to one embodiment of the present invention may mean a process of compressing and converting an image of content in order to estimate identification information regarding content provided in digital signage (400).

[0058] For example, a content acquisition unit (210) according to one embodiment of the present invention can perform preprocessing to simplify an image of content by adjusting the resolution, size, color information, etc. of an image of content.

[0059] Continuing, for example, a content acquisition unit (210) according to one embodiment of the present invention may perform preprocessing to detect features in an image regarding content. This feature detection may be performed after simplifying the image regarding content, and may be performed using various feature detection algorithms such as Canny edge detection, Harris corner detection, SIFT (Scale-Invariant Feature Transform), SURF (Speeded-Up Robust Features), ORB (Oriented FAST and Rotated BRIEF).

[0060] However, the types of preprocessing and the methods of performing preprocessing that can be performed by the content acquisition unit (210) according to one embodiment of the present invention are not limited to those listed above, and may be varied within the scope of achieving the purpose of the present invention. Furthermore, such preprocessing is not necessarily performed by the content acquisition unit (210) according to one embodiment of the present invention, and the content acquisition unit (210) according to one embodiment of the present invention may transmit an image regarding the content to a content management server (not shown) so that the image regarding the content is preprocessed by the content management server (not shown).

[0061] Next, a content management unit (220) according to one embodiment of the present invention can perform a function of supporting trading of NFTs related to content through a marketplace linked to a digital signage (400) by referring to NFT history information related to content. Here, the marketplace according to one embodiment of the present invention can be linked to the digital signage (400) in a manner that corresponds to content provided through the digital signage (400) being captured by a device (400), and the marketplace may include information regarding NFTs related to content distributed through the digital signage (400) or an augmented reality interface (e.g., NFT history information related to content), advertising information regarding NFTs related to content, information regarding derivative products related to content, etc.

[0062] For example, a content management unit (220) according to one embodiment of the present invention can support the minting of an NFT regarding content by referring to NFT history information regarding content.

[0063] Specifically, a content management unit (220) according to one embodiment of the present invention may support the issuance of an NFT regarding the content through a marketplace linked to a digital signage (400) in response to a determination that an NFT regarding the content has not been created by referring to NFT history information regarding the content.

[0064] In addition, a content management unit (220) according to one embodiment of the present invention may generate a smart contract containing details regarding the transaction of the content when an NFT regarding the content is created (for example, it may change at any time depending on the sales conditions of the creator of the content and may not include security information such as personal identity information or account passwords). Then, a content management unit (220) according to one embodiment of the present invention may support the transaction of the NFT by distributing the generated smart contract to a blockchain network (not shown) and allowing virtual currency to be transmitted based on the smart contract.

[0065] For example, if a buyer according to one embodiment of the present invention wishes to trade the copyright of the above content, a transaction for an NFT regarding the above content may be conducted through a marketplace based on a smart contract deployed on a blockchain network (not shown), and in response to the fulfillment of the transaction conditions of the smart contract, a contract may be automatically concluded, virtual currency may be transferred, and the copyright holder's NFT may be delivered to the buyer.

[0066] In addition, the content management unit (220) according to one embodiment of the present invention can support trading of NFTs through an augmented reality interface linked to a marketplace.

[0067] For example, a content management unit (220) according to one embodiment of the present invention can generate an augmented reality interface linked to a marketplace in response to content provided by digital signage (400) being captured by a device (300). Then, the content management unit (220) according to one embodiment of the present invention can support trading for NFTs by providing detailed information regarding the above content (e.g., NFT history information, information regarding the creator or owner, information regarding inquiries regarding use, information regarding related derivative products, etc.) through the augmented reality interface linked to the marketplace.

[0068] In addition, a content management unit (220) according to one embodiment of the present invention may support a usage agreement for an NFT regarding content. For example, a content management unit (220) according to one embodiment of the present invention may create a smart contract including conditions regarding a usage agreement and support the purchase or sale of usage rights for the NFT regarding the content through an augmented reality interface linked to a marketplace.

[0069] Meanwhile, a content management unit (220) according to one embodiment of the present invention may issue an NFT regarding content, create a smart contract, and verify whether a transaction for the NFT regarding content can be made through a marketplace as the created smart contract is distributed to a blockchain network (not shown).

[0070] For example, a content management unit (220) according to one embodiment of the present invention can verify whether a transaction for an NFT regarding content can be smoothly carried out through a marketplace by checking the NFT issuance time (e.g., time for a blockchain operation in the POW method, time for a blockchain operation in the PBFT method), the NFT issuance success rate (e.g., transaction completion rate for an NFT issuance in the POW method, transaction completion rate for an NFT issuance in the PBFT method), the distribution time of digital signage (400) content (e.g., time for automatic registration of digital signage distribution content), the distribution time of augmented reality content (e.g., time for automatic registration of augmented reality distribution content), the connection time of an augmented reality interface (e.g., time for automatic generation of an augmented reality interface and marker linked to a marketplace), etc., and comparing it with a preset threshold.

[0071] In addition, the content management unit (220) according to one embodiment of the present invention may further perform the function of supporting advertising for NFTs using at least one of an augmented reality interface linked with a digital signage (400) and a marketplace.

[0072] For example, a content management unit (220) according to one embodiment of the present invention may provide advertising information regarding an NFT related to the content using the digital signage (400) in response to the content provided through the digital signage (400) being captured by the device (400). As another example, a content management unit (220) according to one embodiment of the present invention may create an augmented reality interface linked to a marketplace in response to the content provided through the digital signage (400) being captured by the device (400), and may provide advertising information regarding an NFT related to the content.

[0073] Next, a communication unit (230) according to one embodiment of the present invention can perform the function of enabling data transmission and reception from / to a content acquisition unit (210) and a content management unit (220).

[0074] Finally, a control unit (240) according to one embodiment of the present invention can perform the function of controlling the flow of data between a content acquisition unit (210), a content management unit (220), and a communication unit (230). That is, by controlling the flow of data from / to / from the outside of the service provision system (200) or the flow of data between each component of the service provision system (200), the control unit (240) according to the present invention can control the content acquisition unit (210), the content management unit (220), and the communication unit (230) to perform their respective unique functions.

[0075] The embodiments according to the present invention described above may be implemented in the form of program instructions that can be executed through various computer components and recorded on a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, etc., either individually or in combination. The program instructions recorded on the computer-readable recording medium may be those specifically designed and configured for the present invention or those known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes; optical recording media such as CD-ROMs and DVDs; magneto-optical media such as floptical disks; and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Examples of program instructions include machine code, such as that generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. Hardware devices may be modified into one or more software modules to perform processing according to the present invention, and vice versa.

[0076] Although the present invention has been described above with reference to specific details such as specific components, limited embodiments, and drawings, this is provided only to aid in a more comprehensive understanding of the invention, and the invention is not limited to the above embodiments, and a person skilled in the art to which the invention belongs can make various modifications and changes from this description.

[0077] Accordingly, the scope of the present invention should not be limited to the embodiments described above, and all scopes equivalent to or equivalently modified from the claims set forth below, as well as the claims set forth below, shall be considered to fall within the scope of the concept of the present invention. Explanation of the symbols

[0078] 100: Communication network 200: Service provision system 210: Content Acquisition Section 220: Content Management Department 230: Communications Department 240: Control unit 300: Device 400: Digital Signage

Claims

Claim 1 A method implemented in a system for providing an NFT publishing platform service, wherein the system comprises a content acquisition unit and a content management unit; wherein the content acquisition unit identifies content provided in digital signage and acquires NFT history information regarding the content by referring to identification information regarding the content and identification information regarding the digital signage; and wherein the content management unit supports a transaction for an NFT regarding the content through a marketplace linked to the digital signage by referring to the NFT history information regarding the content, wherein the identification information regarding the content is identified based on an identification marker included in the content, and the identification information regarding the digital signage is identified based on information regarding the location of a device associated with the acquisition of the content; wherein, in the support step, the content management unit double-verifies the originality of the content by referring to the NFT history information acquired using the identification information regarding the content and the identification information regarding the digital signage; and wherein, in the support step, the content management unit, in response to the verification of the originality of the content, refers to the NFT history information to [determine] details regarding the transaction of the content or conditions regarding a license agreement. A method of supporting a transaction for an NFT regarding said content or a license agreement for said NFT regarding said content by creating a smart contract that includes said content, wherein said NFT history information includes information on the originality of said specified content, issuance history information, order information, ownership transaction history information and license transaction history information. Claim 2 delete Claim 3 delete Claim 4 A method according to claim 1, wherein the content management unit supports the minting of an NFT regarding the content by referring to NFT history information regarding the content in the support step. Claim 5 A method according to claim 1, wherein the content management unit supports a transaction for the NFT through an augmented reality interface linked to the marketplace in the support step. Claim 6 delete Claim 7 A method according to claim 5, wherein the content management unit further includes the step of supporting an advertisement for the NFT using at least one of the digital signage and an augmented reality interface linked with the marketplace in the support step. Claim 8 A non-transient computer-readable recording medium for recording a computer program for executing the method according to paragraph 1. Claim 9 A system for providing NFT publishing platform services comprises: a content acquisition unit that identifies content provided on digital signage and obtains NFT history information regarding said content by referring to identification information regarding said content and identification information regarding said digital signage; and a content management unit that supports trading of said NFTs regarding said content through a marketplace linked to said digital signage by referring to the NFT history information regarding said content; wherein the identification information regarding said content is identified based on an identification marker included in said content, and the identification information regarding said digital signage is identified based on information regarding the location of a device associated with the acquisition of said content; wherein the content management unit double-verifies the originality of said content by referring to the NFT history information obtained using the identification information regarding said content and the identification information regarding said digital signage; wherein the content management unit supports trading of said content or a license agreement for said NFTs regarding said content by generating a smart contract including details regarding trading of said content or conditions regarding a license agreement by referring to said NFT history information in response to the verification of the originality of said content, and said NFT A system in which history information includes information on the originality of the specified content, publication history information, order information, ownership transaction history information and usage rights transaction history information. Claim 10 delete Claim 11 delete Claim 12 In claim 9, the content management unit is a system that supports the minting of an NFT regarding the content by referring to NFT history information regarding the content. Claim 13 In claim 9, the content management unit is a system that supports trading of the NFT through an augmented reality interface linked to the marketplace. Claim 14 delete Claim 15 In claim 13, the system further comprises the step of the content management unit supporting an advertisement for the NFT using at least one of the digital signage and an augmented reality interface linked with the marketplace.

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