JP7461597B1 - Non-fossil value trading system - Google Patents

Abstract

[Problem] To provide a non-fossil value trading system that uses blockchain technology to safely trade non-fossil value. [Solution] This non-fossil value trading system 1 is configured to include a transaction management server 2, a distributed database 3, an account management server 4, a certification organization 7, and a non-fossil power generation facility 9. The transaction management server 2 issues non-fungible tokens based on information on non-fossil value including the amount of electricity generated at the non-fossil power generation facility 9 and information on a non-fossil certificate issued as a certificate by the certification organization 7 certifying the non-fossil value. The issued non-fungible tokens are recorded in a blockchain ledger that constitutes the distributed database 3. Trade of non-fossil value is carried out using these non-fungible tokens. The transaction management server 2 accepts a request to sell and a request to buy the non-fungible token to complete a buying and selling transaction. When a buying and selling transaction is completed, the transfer of ownership of the non-fungible token is recorded in the blockchain ledger. [Selected Figure] Figure 1

Description

This invention relates to a non-fossil value trading system that trades non-fossil value, which is the environmental value of electricity generated without emitting carbon dioxide by non-fossil power sources that generate electricity without using fossil fuels.

In response to the demand for reducing carbon dioxide emissions, attention is being paid to the non-fossil value of electricity generated by non-fossil energy sources, in addition to the value of the electricity itself, as electricity is generated without emitting carbon dioxide. Various proposals have been made in the past regarding this non-fossil value, and one example is the non-fossil certificate management device described in Patent Document 1 below. This non-fossil certificate management device uses blockchain technology to safely manage non-fossil certificates. This non-fossil certificate management device also makes it possible to purchase non-fossil certificates.

JP 2020-27340 A

In recent years, there have been attempts to trade non-fossil value. Blockchain technology makes it extremely difficult to falsify data, making it ideal for building a secure trading system.

However, the non-fossil certificate management device described in Patent Document 1 does not incorporate a mechanism for freely buying and selling non-fossil value, and this device cannot be used to freely trade non-fossil value by repeatedly buying and selling it.

The present invention has been made in light of these circumstances, and the purpose of the invention is to provide a non-fossil value trading system that uses blockchain technology to safely trade non-fossil value.

In order to solve such problems, the invention described in claim 1 is a non-fossil value trading system for trading non-fossil value, which is the environmental value of electricity generated without emitting carbon dioxide by a non-fossil power source that generates electricity without using fossil fuels, comprising an issuing unit that issues non-fungible tokens based on non-fossil information including information on non-fossil value generated based on power generation by a non-fossil power generation facility and including the amount of electricity generated by the non-fossil power generation facility, or information on a non-fossil certificate in which the non-fossil value has been certified by a certification organization and issued as a certificate, an image generating unit that automatically generates an image based on data included in the information on the non-fossil value or data included in the information on the non-fossil certificate, a sale request receiving unit that receives a sale request for the non-fungible token issued by the issuing unit, a purchase request receiving unit that receives a purchase request for the non-fungible token, and and a ledger recording unit that records the non-fungible token in a blockchain ledger that constitutes a distributed database, wherein the non-fossil information includes a generated image generated by the image generation unit, and the issuing unit issues the non-fungible token based on the non-fossil value information or the non-fossil certificate information included in the non-fossil information and the generated image, and when the issuing unit issues the non-fungible token, the ledger recording unit records the issuance of the non-fungible token in the blockchain ledger, and when the transaction generation unit establishes the sale transaction of the non-fungible token, records the transfer of ownership of the non-fungible token in the blockchain ledger.
The invention described in claim 2 is a non-fossil value trading system for trading non-fossil value, which is the environmental value of electricity generated without emitting carbon dioxide by a non-fossil power source that generates electricity without using fossil fuels, comprising an issuing unit that issues non-fungible tokens based on non-fossil information including information on non-fossil value generated based on power generation by a non-fossil power generation facility and including the amount of electricity generated by the non-fossil power generation facility, or information on a non-fossil certificate issued as a certificate by a certification organization certifying the non-fossil value, and the issuing unit receiving a sale request for the non-fungible token; a transaction generation unit that establishes a buying and selling transaction based on the selling request for the non-fungible token accepted by the selling request acceptance unit and the buying request accepted by the buying request acceptance unit, and a ledger recording unit that records the non-fungible token in a ledger of a blockchain that constitutes a distributed database, wherein the ledger recording unit records the issuance of the non-fungible token in the ledger of the blockchain when the issuing unit issues the non-fungible token, and records the transfer of ownership of the non-fungible token in the ledger of the blockchain when the buying and selling transaction of the non-fungible token is established by the transaction generation unit. the transaction is further configured to record the non-fungible token in a non-fossil value account for managing the non-fossil value, a non-fossil certificate account for managing the non-fossil value, and an NFT account for managing the non-fungible token, and is further configured to include an account management unit for managing the non-fossil value account, the non-fossil certificate account, and the NFT account, and when the non-fungible token is issued based on the non-fossil value managed in the non-fossil value account, the account management unit manages the issued non-fungible token in the NFT account, and removes the non-fossil value that was the basis for issuing the non-fungible token from the management in the non-fossil value account and records the non-fungible token in the non-fossil certificate account. When the non-fungible token is issued based on the non-fossil certificate managed in an NFT account, the account management unit manages the issued non-fungible token in the NFT account and removes the non-fossil certificate from the management of the non-fossil certificate account, and when the non-fossil value managed in the non-fossil value account is applied for to the certification organization and certified by the certification organization and the non-fossil certificate is issued, the account management unit manages the issued non-fossil certificate in the non-fossil certificate account and removes the non-fossil value used in the application from the management of the non-fossil value account.
The invention described in claim 6 is a non-fossil value trading system for trading non-fossil value, which is the environmental value of electricity generated without emitting carbon dioxide by a non-fossil power source that generates electricity without using fossil fuels, comprising an issuing unit that issues non-fungible tokens based on non-fossil information including information on non-fossil value generated based on power generation by a non-fossil power generation facility and including the amount of electricity generated by the non-fossil power generation facility, or information on a non-fossil certificate in which the non-fossil value has been certified by a certification organization and issued as a certificate, a sale request receiving unit that receives a sale request for the non-fungible token issued by the issuing unit, a purchase request receiving unit that receives a purchase request for the non-fungible token, a transaction generating unit that establishes a sale transaction based on the sale request for the non-fungible token received by the sale request receiving unit and the purchase request received by the purchase request receiving unit, and a transaction generating unit that generates the non-fungible token in a ledger of a blockchain constituting a distributed database, the transaction generating unit generating the non-fungible token based on the sale request received by the sale request receiving unit and the purchase request received by the purchase request receiving unit, The ledger recording unit is configured to record a fungible token and a consumption request receiving unit is configured to receive a consumption request to extinguish the non-fungible token, and when the issuing unit issues the non-fungible token, the ledger recording unit records the issuance of the non-fungible token in the blockchain ledger, and when the transaction generation unit establishes the sale and purchase transaction of the non-fungible token, the ledger recording unit records the transfer of ownership of the non-fungible token in the blockchain ledger, and when the consumption request receiving unit receives the consumption request, the ledger recording unit records the extinction of the non-fungible token for which the consumption request was made in the blockchain ledger. The ledger recording unit further has a non-fossil value account that manages the non-fossil value, a non-fossil certificate account that manages the non-fossil certificate, and an NFT account that manages the non-fungible token, and The system includes a management unit and a non-fossil value application unit that applies for the non-fossil value to the certification organization, and when the non-fungible token is issued based on the non-fossil value managed in the non-fossil value account, the account management unit manages the issued non-fungible token in the NFT account and removes the non-fossil value that was the source of the issuance of the non-fungible token from management in the non-fossil value account, when the non-fungible token is issued based on the non-fossil certificate managed in the non-fossil certificate account, the account management unit manages the issued non-fungible token in the NFT account and removes the non-fossil certificate that was the source of the issuance of the non-fungible token from management in the non-fossil certificate account, when the non-fossil value managed in the non-fossil value account is applied for to the certification organization and certified by the certification organization and the non-fossil certificate is issued, the account management unit in the non-fossil certificate account, and removes the non-fossil value used in the application from management in the non-fossil value account; and when the consumption request receiving unit receives the consumption request, if the non-fungible token for which the consumption request has been made has been issued based on information of the non-fossil certificate, the account management unit removes the non-fungible token for which the consumption request has been made from management in the NFT account, and if the non-fungible token for which the consumption request has been made has been issued based on information of the non-fossil value, the account management unit removes the non-fungible token for which the consumption request has been made from management in the NFT account; and the non-fossil value application unit applies to the certification institution for the non-fossil value that was used to issue the non-fungible token for which the consumption request has been made, and when the non-fossil value application unit is certified by the certification institution and the non-fossil certificate is issued, the account management unit manages the issued non-fossil certificate in the non-fossil certificate account.

The invention of claim 5 , in addition to the configuration of claim 2 , further comprises an image generation unit that automatically generates an image based on data included in the non-fossil value information or data included in the non-fossil certificate information, the non-fossil information includes a generated image generated by the image generation unit, and the issuing unit issues the non-fungible token based on the non-fossil value information or the non-fossil certificate information included in the non-fossil information and the generated image.

The invention according to claim 3 is characterized in that, in addition to the configuration according to claim 1 or 2, it further includes a consumption request receiving unit that receives a consumption request to extinguish the non-fungible token, and when the consumption request receiving unit receives the consumption request, the ledger recording unit records the extinction of the non-fungible token for which the consumption request was made in the blockchain ledger.

The invention according to claim 4 has, in addition to the configuration according to claim 1 , a non-fossil value account for managing the non-fossil value, a non-fossil certificate account for managing the non-fossil certificate, and an NFT account for managing the non-fungible token, and further comprises an account management unit for managing the non-fossil value account, the non-fossil certificate account, and the NFT account, and when the non-fungible token is issued based on the non-fossil value managed in the non-fossil value account, the account management unit manages the issued non-fungible token in the NFT account, and removes the non-fossil value that was the source of the issuance of the non-fungible token from the management in the non-fossil value account, When the non-fungible token is issued based on the non-fossil certificate managed in a certificate account, the account management unit manages the issued non-fungible token in the NFT account and removes the non-fossil certificate from the management of the non-fossil certificate account, and when the non-fossil value managed in the non-fossil value account is applied for to the certification institution and certified by the certification institution and the non-fossil certificate is issued, the account management unit manages the issued non-fossil certificate in the non-fossil certificate account and removes the non-fossil value used in the application from the management of the non-fossil value account.

The invention of claim 7 is characterized in that, in addition to the configuration described in claim 2, 4 or 6 , when the sale request is completed in the buying and selling transaction completed by the transaction generation unit, the account management unit removes the non-fungible token corresponding to the selling request from management in the NFT account, and when the purchase request is completed in the buying and selling transaction, the account management unit manages the non-fungible token corresponding to the purchase request in the NFT account.

The invention according to claim 8 is characterized in that, in addition to the configuration described in claim 7, it includes an account linking unit that accesses an exchange non-fossil certificate management account provided at an external exchange and changes the account contents to be linked to the non-fossil certificate account and the NFT account, and when the account management unit makes a change to the management of the non-fossil certificate account or the NFT account, the account linking unit operates to change the account contents of the exchange non-fossil certificate management account so that the non-fossil certificates stored in the exchange non-fossil certificate management account match all of the non-fossil certificates, which are the sum of all of the non-fossil certificates managed in the non-fossil certificate account and all of the non-fossil certificates that were the source of issuing the non-fungible tokens managed in the NFT account, after the change.

The invention according to claim 9 is characterized in that, in addition to the configuration according to claim 2, 4 or 6 , the ledger recording unit records information about the non-fossil value and information about the non-fossil certificate in the blockchain ledger; when management of the non-fossil value is initiated in the non-fossil value account, the ledger recording unit records the information about the non-fossil value in the blockchain ledger; when management of the non-fossil value is removed from the non-fossil value account, the ledger recording unit records extinction of the non-fossil value recorded at the start of management in the blockchain ledger; when management of the non-fossil certificate is initiated in the non-fossil certificate account, the ledger recording unit records information about the non-fossil certificate in the blockchain ledger; and when management of the non-fossil certificate is removed from the non-fossil certificate account, the ledger recording unit records extinction of the non-fossil certificate recorded at the start of management in the blockchain ledger.

The invention according to claim 10 has the configuration as recited in claim 7, and is characterized in that, in addition to the configuration recited in claim 7 , the ledger recording unit records information about the non-fossil value and information about the non-fossil certificate in the blockchain ledger; when management of the non-fossil value is initiated in the non-fossil value account, the ledger recording unit records the information about the non-fossil value in the blockchain ledger; when management of the non-fossil value is removed from the non-fossil value account, the ledger recording unit records extinction of the non-fossil value recorded at the start of management in the blockchain ledger; when management of the non-fossil certificate is initiated in the non-fossil certificate account, the ledger recording unit records information about the non-fossil certificate in the blockchain ledger; and when management of the non-fossil certificate is removed from the non-fossil certificate account, the ledger recording unit records extinction of the non-fossil certificate recorded at the start of management in the blockchain ledger.

According to the inventions of claims 1 , 2 and 6 , trading of non-fossil value can be carried out.

In addition, both non-fungible tokens issued based on non-fossil value information and non-fungible tokens issued based on non-fossil certificate information are tradeable. In other words, non-fossil value at the stage before the issuance of a non-fossil certificate is also tradeable.

In addition, trades are conducted using non-fungible tokens issued based on non-fossil value information or non-fossil certificate information. The non-fungible tokens utilize blockchain technology and are extremely difficult to copy or tamper with, allowing for highly secure transactions. Furthermore, secondary circulation is possible, where non-fungible tokens can be repeatedly bought and sold, such as by selling purchased non-fungible tokens again.

According to the invention of claims 1 and 5 , a non-fungible token is issued so as to include not only information on the non-fossil value and the non-fossil certificate, but also an image generated based on the information on the non-fossil value and the non-fossil certificate, and trading is carried out using this non-fungible token. By referring to this image, each non-fungible token can be easily and clearly distinguished, and trading can be carried out smoothly.

In addition, the images generated are unique, meaning there are no other identical images, creating a sense of rarity and the value of the image itself may be appreciated.

According to the invention of claim 3, a function of consumption that eliminates non-fungible tokens is included, and the non-fossil value and non-fossil certificate that originally issued the non-fungible token that was eliminated by consumption may be recorded in carbon accounting. In addition, a non-fungible token issued based on non-fossil value may be consumed, and the non-fossil value corresponding to the non-fungible token may be applied for to a certification institution to issue a non-fossil certificate. In this way, the consumption function can be applied to various uses.

According to the inventions of claims 2 and 4, the non-fossil value account, non-fossil certificate account, and NFT account are managed separately, so that the user can easily grasp the status of his/her non-fossil value holdings, etc.

In addition, the results of your trades are automatically reflected in each account, allowing you to trade comfortably without having to do any complicated work.

According to the invention of claim 6, the accounts are managed separately as a non-fossil value account, a non-fossil certificate account, and an NFT account, so that the user can easily grasp the status of his/her non-fossil value holdings. In addition, the results of the trade are automatically reflected in each account, so that the user can trade comfortably without having to do complicated work.

In addition, each account is properly managed for consumption functions, so you can use the consumption functions with peace of mind and without hassle.

According to the invention of claim 7, the results of trading non-fungible tokens are reflected in the NFT account.

According to the invention of claim 8, the management status of the non-fossil certificate account and NFT account coincides with the account contents of the exchange non-fossil certificate management account, so that synchronization of the contents between the accounts is achieved and no inconsistencies arise between this trading system and the system of an external exchange.

According to the inventions of claims 9 and 10, since information on non-fossil value managed in a non-fossil value account is recorded in a blockchain ledger, it is extremely difficult to tamper with the information on non-fossil value, and non-fossil value can be managed safely. Similarly, since information on non-fossil certificates managed in a non-fossil certificate account is recorded in a blockchain ledger, it is extremely difficult to tamper with the information on non-fossil certificates, and non-fossil certificates can be managed safely.

1 is a schematic block diagram of a non-fossil value trading system according to an embodiment of the present invention. FIG. 2 is a schematic functional block diagram of a transaction management server according to the embodiment. FIG. 2 is a schematic functional block diagram of an account management server according to the embodiment. FIG. 2 is a schematic diagram showing the account contents of the account management server according to the embodiment. FIG. A figure showing an example of an image generated by an image generation unit of the account management server in the same embodiment. FIG. 13 is an example of a schematic diagram of an auction bidding screen for purchasing non-fungible tokens in the non-fossil value trading system according to the embodiment. FIG. 13 is an example of a schematic diagram of an auction bidding screen for purchasing non-fungible tokens in the non-fossil value trading system according to the embodiment. FIG. 2 is a functional block diagram of a non-fossil certificate management account holding server of an external exchange according to the embodiment. FIG. 2 is a diagram for explaining the operation of the non-fossil value trading system according to the embodiment, and is a diagram showing an example of the flow of information managed in an account in the account management server.

[Embodiments of the invention]
An embodiment of the present invention will be described with reference to FIGS. 1 to 9. FIG.

Figure 1 is a schematic block diagram of a non-fossil value trading system 1 according to an embodiment of the present invention. This non-fossil value trading system 1 trades non-fossil value, which is the environmental value of electricity generated without emitting carbon dioxide by a non-fossil power source that generates electricity without using fossil fuels.

This non-fossil value trading system 1 is configured to include a trading management server 2, a distributed database 3, an account management server 4, power generation user terminals ₅₁ , ₅₂ , ..., _5j , general user terminals ₆₁ , ₆₂ , ..., _6n , a certification agency 7, a non-fossil certificate management account holding server 8 of an external exchange, non-fossil power generation facilities ₉₁ , ₉₂ , ..., _9k as "non-fossil power generation facilities", and a digital data storage server 11, and each element is connected by a communication line 10 such as the Internet.

The transaction management server 2 issues non-fungible tokens (NFTs) (hereinafter referred to as NFTs) based on non-fossil value, accepts requests to sell or buy these NFTs, and completes sales transactions.

Non-fossil value refers to the environmental value of electricity generated without emitting carbon dioxide by non-fossil power sources that generate electricity without using fossil fuels. Non-fossil value information that represents the content of the non-fossil value may include the amount of electricity generated, the type of power generation (power generation equipment) such as solar power generation, hydroelectric power generation, or tidal power generation, the power generation facility ID (identification), the power generator (producer), the power generation date (power generation date and time), the power generation location (location information, latitude and longitude), and the weather. Non-fossil value information can be handled as digital data.

Furthermore, this non-fossil value is applied for to the certification body 7, and once it is certified by the certification body 7, a non-fossil certificate is issued. Like the non-fossil value, this non-fossil certificate indicates the environmental value of electricity generated by a non-fossil power source. The difference between the non-fossil value and the non-fossil certificate is whether it is certified or not. Like the non-fossil value, the information in the non-fossil certificate that indicates the contents of the non-fossil certificate may include the amount of electricity generated, the type of power generation (power generation equipment) such as solar power generation, the power generation facility ID, the generator (producer), the date of power generation (date and time of power generation), the location of power generation (location information, latitude and longitude), and the weather. The information in the non-fossil certificate can also be handled as digital data.

As mentioned above, the difference between non-fossil value and non-fossil certificate is whether or not it has been certified, and non-fossil value information and non-fossil certificate information are composed of similar items. For this reason, both non-fossil value information and non-fossil certificate information are collectively referred to as non-fossil information. This non-fossil information also includes information on whether or not it has been certified. In other words, it is possible to distinguish between non-fossil value information and non-fossil certificate information depending on the information on whether or not it has been certified, which is included in the non-fossil information.

NFTs are digital data that cannot be counterfeited or tampered with, and have the ability to prove authenticity by granting uniqueness (non-fungibility) to digital data on the blockchain, as well as the ability to track transaction history. NFTs can be purchased, sold, and resold, and transaction history can be confirmed using the blockchain. In addition, standardization has been established for NFTs, and this embodiment is based on the ERC (Ethereum Request for Communities)-721 standard.

The distributed database 3 is composed of a blockchain, in which a large number of computers form a P2P (Peer to Peer) network, and a certain number of digitally signed data are grouped together to form a block. These blocks are connected in succession to form a chain of ledger data, which is stored on each computer in the P2P network. The hash value of the previous block is embedded in each successive block, creating a distributed database that is extremely difficult to tamper with.

The account management server 4 manages the user's accounts related to non-fossil value. The user accesses this account management server 4 from a terminal to refer to the account or participate in trading of non-fossil value.

The power generation user terminals 5 ₁ , 5 ₂ , ..., 5 _j are information and communication terminals operated by power generation users who own non-fossil power generation facilities, and are equipped with a control unit, a memory unit, a communication unit, an input unit, a display unit, etc. (not shown). A personal computer (PC) or a smartphone can be used. Hereinafter, the power generation user terminals 5 ₁ , 5 ₂ , ..., 5 _j will be represented by the reference number 5, and will be referred to as the power generation user terminal 5.

The general user terminals 6 ₁ , 6 ₂ , ..., 6 _n are information and communication terminals operated by general users who do not own non-fossil fuel power generation facilities, and are equipped with a control unit, a storage unit, a communication unit, an input unit, a display unit, etc. (not shown). A PC, a smartphone, etc. are used. Hereinafter, the general user terminals 6 ₁ , 6 ₂ , ..., 6 _n will be represented by the symbol 6, and will be referred to as the general user terminal 6.

Note that the power generation user terminal 5 and the general user terminal 6 are separated for convenience according to the user who uses the terminal, but in reality, they are similar information and communication terminals with similar functions. In addition, the method of use in this non-fossil value trading system 1 is also almost the same.

The certification body 7 is an organization that certifies the applied-for non-fossil value, and when the non-fossil value is certified by this certification body 7, a non-fossil certificate is issued. Applications for non-fossil value are made at predetermined intervals, for example, once a month.

The external exchange's non-fossil certificate management account holding server 8 holds an exchange non-fossil certificate management account 86 established at the external exchange. Non-fossil certificates certified and issued by the certification institution 7 are managed in this exchange non-fossil certificate management account 86. Currently, the external exchange is the Japan Electric Power Exchange (JEPX), a general incorporated association.

The non-fossil power generation facility 9 is a facility that generates electricity without using fossil fuels, such as a solar power generation facility, a wind power generation facility, or a tidal power generation facility. Non-fossil value is generated based on the amount of electricity generated from this non-fossil power generation facility 9.

Data such as the amount of electricity generated by the non-fossil power generation facility 9 is sent to the account management server 4 at predetermined intervals, such as every 30 minutes, and the account management server 4 accumulates non-fossil value in the account of the power generation user who owns the non-fossil power generation facility 9.

The power generation user accesses the account management server 4 from the power generation user terminal 5 to issue NFTs from the non-fossil value, or to apply for the non-fossil value to the certification institution 7 to have a non-fossil certificate issued.

When a power generation user or general user trades, they access the account management server 4 from the power generation user terminal 5 or general user terminal 6 to place a buy or sell order for NFTs. This order information is sent from the account management server 4 to the transaction management server 2, where the transaction is completed. The trade may be in the form of a bilateral transaction or an auction format. In the auction format, if there are multiple purchase requests during the application period for the NFT for which a sale request has been made, the transaction will be completed with the purchase request offering the highest price.

The digital data storage server 11 is a server that stores digital data, and includes a control unit (not shown), a digital data storage unit 112 that is a memory element that stores digital data, and a communication unit. When the digital data linked to the NFT has a large data size, such as image data, the large digital data may be recorded on the blockchain, but the large digital data is not recorded on the blockchain and is instead stored on an external server or the like. This digital data storage server 11 is a server for storing digital data and the like linked to the NFT. The digital data storage server 11 may be configured to use IPFS (InterPlanetary File System), a type of distributed storage, to prevent the risk of data tampering or loss.

Figure 2 is a schematic functional block diagram of the transaction management server 2. This transaction management server 2 is configured to include a control unit 20, a non-fossil information receiving unit 21, an issuing unit 22, a ledger recording unit 23, a selling request receiving unit 24, a purchasing request receiving unit 25, a transaction generating unit 26, a transaction information notifying unit 27, and a communication unit 29. A server device, a PC, or the like is used as this transaction management server 2.

The control unit 20 is configured to include a CPU (Central Processing Unit) (not shown), an auxiliary storage device which is a non-volatile storage device, and a volatile memory RAM (Random Access Memory). The CPU executes programs, performs arithmetic processing, and controls each element that constitutes the server 2. The auxiliary storage device stores programs executed by the CPU and registered data, and may be a hard disk drive (HDD) or solid state drive (SSD). The RAM is used as a work area for program execution and arithmetic processing by the CPU.

The non-fossil information receiving unit 21 receives non-fossil information including the amount of power, producer, power generation date and time, power generation location, power generation method (power generation equipment), etc. The non-fossil information includes non-fossil value information, non-fossil certificate information, etc. Furthermore, the non-fossil information may include information such as images other than the non-fossil value information and non-fossil certificate information. The information received by this non-fossil information receiving unit 21 becomes the original data when issuing NFTs.

The issuing unit 22 issues an NFT based on the non-fossil information received by the non-fossil information receiving unit 21. If the non-fossil information includes an image, the issuing unit 22 issues an NFT based on the information on the non-fossil value or non-fossil certificate and its image. When the NFT is issued, the issuance information of the NFT is notified to the account management server 4.

As mentioned above, NFTs are unique, non-fungible digital assets that are recorded on the blockchain. Because NFTs use blockchain technology, they are extremely difficult to tamper with, and their use enables safe transactions.

When an NFT is issued, transaction information including information on the owner of the NFT, non-fossil value information or non-fossil certificate information included in the non-fossil information, and information on whether the certificate was created or not included in the non-fossil information are recorded as digital data on the blockchain, and the image information included in the non-fossil information is stored in the digital data storage server 11 as digital data linked to the NFT. Since the NFT and the image data included in the non-fossil information are linked, that is, in one-to-one correspondence, the linked image data can be referenced from the NFT. In addition, by referencing the information on whether the certificate was created or not included in the NFT, it can be identified whether the original data that constituted the NFT was based on non-fossil value information or non-fossil certificate information.

In addition, the NFT may be configured such that transaction information, including information on the owner of the NFT, is recorded as digital data on the blockchain, and non-fossil value information or non-fossil certificate information, information on whether the certificate was successfully created, and image information, which are included in the non-fossil information, are stored in the digital data storage server 11 as digital data linked to the NFT. Configuring the NFT in this way can keep the amount of data recorded on the blockchain small.

The NFT may also be configured so that all of the transaction information including information about the owner of the NFT, the non-fossil value information or non-fossil certificate information included in the non-fossil information, information on whether the certificate was created, and image information are recorded on the blockchain as digital data. In this way, although the amount of data recorded on the blockchain will be large, all digital data will be recorded on the blockchain, preventing tampering or loss.

The ledger recording unit 23 records the NFT in the blockchain ledger that constitutes the distributed database 3. The process of recording in the blockchain ledger involves inputting the digital data that constitutes the NFT into a hash function to calculate a hash value, and digitally signing the calculated hash value with a private key. This digitally signed data is then sent to the computer that constitutes the blockchain P2P network. When the issuing unit 22 issues an NFT, the ledger recording unit 23 records the issuance of the NFT in the blockchain ledger.

The sale request receiving unit 24 receives a sale request for an NFT issued by the issuing unit 22. The NFT corresponding to the sale request becomes the subject of the trade.

The purchase request receiving unit 25 receives a purchase request for an NFT. The NFT corresponding to this purchase request becomes the purchase target of the trade. If the trade is conducted in an auction format, multiple purchase requests may be received for one NFT to be sold, which is received by the sale request receiving unit 24. By making NFTs the target of a trade, secondary distribution in which NFTs are repeatedly bought and sold, such as by selling an NFT that has been purchased once, can be easily realized.

The transaction generation unit 26 completes a buying and selling transaction based on the NFT selling request accepted by the selling request acceptance unit 24 and the buying request accepted by the buying request acceptance unit 25. If the trade is in the auction format, the transaction generation unit 26 completes a buying and selling transaction with the buying request that offers the highest price. In the auction format, the user who placed the selling request may be allowed to select from among multiple buying requests that were made during the application period and decide which buying request to complete the transaction with. When the buying and selling transaction of the NFT is completed by the transaction generation unit 26, the ledger recording unit 23 of the transaction management server 2 records the transfer of ownership of the NFT in the blockchain ledger. In other words, the transaction information including information on the owner of the NFT is recorded on the blockchain.

The transaction information notification unit 27 notifies the outside of the transaction information that is the result of the trade. If a buying/selling transaction is concluded, it notifies the fact that the transaction has been concluded and the purchase amount, etc. If a buying/selling transaction is not concluded, it notifies the outside of the fact that the transaction has not been concluded.

The communication unit 29 transmits and receives data to and from the outside via the communication line 10.

Figure 3 is a schematic diagram of the functional blocks of the account management server 4. The account management server 4 is configured to include a control unit 30, an account holding unit 31, an account management unit 36, a power generation information reception unit 37, an NFT issuance request reception unit 38, an image generation unit 39, a non-fossil information notification unit 40, an NFT issuance information reception unit 41, a non-fossil value application reception unit 42, a non-fossil value application unit 43, an external account change information reception unit 44, a consumption request reception unit 45, a ledger recording unit 46, an account linkage unit 47, a sell order reception unit 48, a sell request notification unit 49, a buy order reception unit 50, a purchase request notification unit 51, a transaction information reception unit 52, a payment information holding unit 53, and a communication unit 59. A server device, a PC, or the like is used for the account management server 4.

The control unit 30 is configured to include a CPU, auxiliary storage device, and RAM (not shown).

The account holding unit 31 holds an account 32 for each user.

Figure 4 is a schematic diagram showing the contents of the account 32 held in the account holding unit 31. The account 32 is divided into three accounts: a non-fossil value account 33 for managing non-fossil value, a non-fossil certificate account 34 for managing non-fossil certificates, and an NFT account 35 for managing NFTs.

The account management unit 36 shown in FIG. 3 manages the non-fossil value account 33, the non-fossil certificate account 34, and the NFT account 35.

When the non-fossil value information managed in the non-fossil value account 33 is notified to the non-fossil value information receiving unit 21 of the transaction management server 2 and the issuing unit 22 issues an NFT based on this non-fossil value information, the account management unit 36 manages the issued NFT in the NFT account 35 and removes the non-fossil value that was the basis for issuing the NFT from the management of the non-fossil value account 33.

When the non-fossil certificate information managed in the non-fossil certificate account 34 is notified to the non-fossil information receiving unit 21 and the issuing unit 22 issues an NFT based on the non-fossil certificate information, the account management unit 36 manages the issued NFT in the NFT account 35 and removes the non-fossil certificate from which the NFT was issued from the management of the non-fossil certificate account 34.

When the non-fossil value managed in the non-fossil value account 33 is applied for to the certification body 7 and is certified by the certification body 7 and a non-fossil certificate is issued, the account management unit 36 manages the issued non-fossil certificate in the non-fossil certificate account 34 and removes the non-fossil value used in the application from management in the non-fossil value account 33.

The power generation information receiving unit 37 receives power generation information including the amount of generated electricity, producer, power generation date and time, power generation location, power generation method (power generation equipment), etc., sent from the non-fossil power generation facility 9. In this embodiment, this power generation information is sent at a predetermined time interval. A non-fossil value is generated based on this power generation information received by the power generation information receiving unit 37, and the generated non-fossil value is configured to be automatically accumulated in the non-fossil value account 33 of the power generation user who owns the non-fossil power generation facility 9. The account management unit 36 manages this non-fossil value, which is generated and automatically accumulated based on the power generation information, in the non-fossil value account 33.

The NFT issuance request reception unit 38 receives a request to issue an NFT for non-fossil value managed in the non-fossil value account 33 or a non-fossil certificate managed in the non-fossil certificate account 34. The non-fossil value or non-fossil certificate from which the NFT is issued is specified in this NFT issuance request. In many cases, the NFT issuance request is notified from the power generation user terminal 5 of the power generation user. Information on the specified non-fossil value or non-fossil certificate is sent to the transaction management server 2, and the NFT is issued based on the information on the non-fossil value or non-fossil certificate. However, an NFT issuance request can also be notified from the general user terminal 6.

The image generation unit 39 automatically generates an image based on data included in the non-fossil value information or the non-fossil certificate information. For example, an image is generated based on data such as the amount of generated electricity (non-fossil value amount) included in the non-fossil value or non-fossil certificate information, the type of power generation (type of power generation equipment) such as solar power generation, the power generation date (power generation date and time, season), the power generation location (location information, latitude and longitude), and weather. This image generation is performed by processing using artificial intelligence. This image generation may also utilize a publicly available API (Application Programming Interface).

In this image generation unit 39, a unique image is generated by inputting data contained in the non-fossil value information, such as the type of power generation facility (characters) (such as solar power generation or wind power generation), the power generation location (characters), the weather (characters), the season (characters), and the amount of non-fossil value (numeric value).

5(a) to 5(c) are diagrams showing examples of images generated by the image generating unit 39. For example, the background of the image generated by the image generating unit 39 changes depending on the season input, and the brightness of the character and image changes depending on the type of power generation facility. Comparing FIG. 5(a) with FIG. 5(b), the background image is the same, but the character image is different. Also, comparing FIG. 5(a) with FIG. 5(c), the character image is the same, but the background image is different. In this way, the image changes depending on the input data, and all the images generated are different from each other. Even for the same character, a unique image is generated by changing the facial expression, posture, hairstyle, clothing, etc. In addition, in the case of non-fossil value or non-fossil certificate generated by a rare power generation method such as tidal power generation, the generated image may be configured so that a rare character is assigned.

The generated image can then be included in the non-fossil information that causes the NFT to be issued. That is, the generated image is added to the non-fossil value information or non-fossil certificate information to issue the NFT. Because the generated image is unique, the NFT can be easily and clearly identified by referencing the image. It is also expected that the rarity of the generated image will be evaluated, and the image itself will acquire value.

The image generation process may also be implemented to generate a unique image by inputting data such as the type of power generation facility and the amount of non-fossil value, based on an algorithm other than the process using artificial intelligence.

The non-fossil information notification unit 40 shown in FIG. 3 notifies the transaction management server 2 of the non-fossil information for issuing an NFT. In addition to the non-fossil value information or non-fossil certificate information, the non-fossil information may also include a generated image generated by the image generation unit 39, and this embodiment is configured to include the generated image in the non-fossil information.

The NFT issuance information receiving unit 41 receives NFT issuance information notified when the issuing unit 22 of the transaction management server 2 issues an NFT. The account management unit 36 manages the contents of the account 32 held in the account holding unit 31 based on the received NFT issuance information. Note that, to obtain the contents of the NFT, the account holding unit 31 refers to the NFT recorded in the blockchain and also refers to digital data stored in the digital data storage server 11, such as image data linked to the NFT.

The non-fossil value application receiving unit 42 receives requests to apply to the certification institution 7 for non-fossil value managed in the non-fossil value account 33.

The non-fossil value application unit 43 applies for the non-fossil value managed in the non-fossil value account 33 to the certification organization 7 based on the application request received by the non-fossil value application reception unit 42. When the applied for non-fossil value is certified by the certification organization 7, a non-fossil certificate is issued.

The external account change information reception unit 44 receives a notification sent when a change occurs in the exchange non-fossil certificate management account 86 of the external exchange. When the non-fossil value is certified by the certification institution 7, a non-fossil certificate is issued, and the non-fossil certificate is managed in the exchange non-fossil certificate management account 86 of the user held by the non-fossil certificate management account holding server 8 of the external exchange. In this way, when a change occurs in the exchange non-fossil certificate management account 86, a notification is sent from the non-fossil certificate management account holding server 8 of the external exchange. The external account change information reception unit 44 receives the notification. When the external account change information reception unit 44 receives the notification, the account management unit 36 changes the non-fossil certificate account 34 of the user so that the contents of the non-fossil certificate account 34 are synchronized with the changes to the exchange non-fossil certificate management account 86.

The consumption request reception unit 45 receives a consumption request to destroy an NFT. This consumption request is sent from the power generation user terminal 5 or the general user terminal 6. When the consumption request reception unit 45 receives a consumption request, the ledger recording unit 46 of the account management server 4 records the destruction of the NFT for which consumption was requested in the blockchain ledger.

In addition, when the consumption request receiving unit 45 receives a consumption request, if the NFT for which the consumption request was made was issued based on information about a non-fossil certificate, the account management unit 36 removes the NFT for which the consumption request was made from management in the NFT account 35. In addition, the account management unit 36 may accordingly start managing the NFT in the non-fossil certificate account 34 as a consumed non-fossil certificate.

On the other hand, if the NFT for which consumption has been requested has been issued based on information about non-fossil value, the account management unit 36 removes the NFT for which consumption has been requested from management in the NFT account 35, and starts managing it as non-fossil value in the non-fossil value account 33. Thereafter, the non-fossil value application unit 43 applies to the certification organization 7 for this non-fossil value that was the basis for issuing the NFT for which consumption has been requested, and when the certification organization 7 is certified and a non-fossil certificate is issued, the account management unit 36 removes the requested non-fossil value from management in the non-fossil value account 33, and manages the issued non-fossil certificate in the non-fossil certificate account 34.

The determination of whether an NFT was issued based on non-fossil certificate information or non-fossil value information is made by referring to the information on whether or not the NFT was certified, as described above, which is included in the NFT. If the information on whether or not the NFT was certified indicates that the NFT was not certified, then the NFT was issued based on non-fossil value information, and if the information indicates that the NFT was certified, then the NFT was detected as having been issued based on non-fossil certificate information.

The ledger recording unit 46 records the NFT in the blockchain ledger that constitutes the distributed database 3.

The ledger recording unit 46 also records digital data indicating information on non-fossil value or information on non-fossil certificate in the blockchain ledger constituting the distributed database 3. Recording in the blockchain ledger is performed by digitally signing the digital data indicating information on non-fossil value or digital data indicating information on non-fossil certificate and transmitting the digitally signed data to the computer constituting the blockchain. When management of non-fossil value is started in the non-fossil value account 33, the ledger recording unit 46 records information on non-fossil value in the blockchain ledger. On the other hand, when management of non-fossil value is removed from the non-fossil value account 33, the ledger recording unit 46 records the disappearance of the non-fossil value recorded at the start of management in the blockchain ledger. Similarly, when management of non-fossil certificate is started in the non-fossil certificate account 34, the ledger recording unit 46 records information on non-fossil certificate in the blockchain ledger. Then, when the management of the non-fossil certificate is removed from the non-fossil certificate account 34, the ledger recording unit 46 records in the blockchain ledger the disappearance of the non-fossil certificate that was recorded when management began.

In addition, instead of storing digital data indicating the non-fossil value information and non-fossil certificate information in the blockchain, only basic information such as history information may be recorded in the blockchain, and the digital data indicating the non-fossil value information and non-fossil certificate information may be linked to the basic information recorded in the blockchain and stored in the digital data storage server 11. Then, when reading out the digital data indicating the non-fossil value information and non-fossil certificate information, the basic information recorded in the blockchain may be referenced, and the digital data indicating the non-fossil value information and non-fossil certificate information linked to the basic information may be obtained.

The account linking unit 47 accesses the exchange non-fossil certificate management account 86 provided at an external exchange and changes the account contents to be linked to the non-fossil certificate account 34 and the NFT account 35. When the account management unit 36 makes a change to the management of the non-fossil certificate account 34 or the NFT account 35, the account linking unit 47 operates to change the account contents of the exchange non-fossil certificate management account 86 so that the non-fossil certificates stored in the exchange non-fossil certificate management account 86 match all non-fossil certificates, including all non-fossil certificates managed in the non-fossil certificate account 34 and all non-fossil certificates that were the source of issuing the NFTs managed in the NFT account 35, after the change.

Because the account linkage unit 47 operates in this manner, the management status of the non-fossil certificate account 34 and the NFT account 35 matches the account contents of the exchange non-fossil certificate management account 86, achieving synchronization of the contents between the accounts.

The sell order receiving unit 48 receives orders to sell NFTs managed in the user's NFT account 35 from the power generation user terminal 5 or the general user terminal 6.

The sale request notification unit 49 notifies the transaction management server 2 of a request to sell the NFT based on the sell order received by the sell order reception unit 48. In other words, the NFT is put up for sale. When the transaction generation unit 26 completes a sale transaction based on this NFT sale request, the account management unit 36 removes the NFT corresponding to this sale request from the management of the NFT account 35.

The buy order reception unit 50 receives buy orders from power generation user terminals 5 and general user terminals 6 for the NFTs that have been put up for sale after a sale request has been notified to the transaction management server 2. These buy orders also include information on the purchase price (bid price) offered by the user.

Figures 6 and 7 show examples of schematic diagrams of auction bidding screens 60, 61 for purchasing NFTs. These auction bidding screens 60, 61 are screens that are displayed when NFT buying and selling transactions are conducted in the form of an auction, and are displayed on the power generation user terminal 5 or general user terminal 6 of a user who wishes to purchase an NFT that is being auctioned (a selling order).

The auction bidding screen 60 shown in FIG. 6 displays the contents of six NFTs that are part of the list of NFTs being offered. The contents of one NFT are shown by an image and the arrangement of characters displayed below the image. The image at the top is an image linked to that NFT, and is an image generated based on digital data indicating non-fossil value information and non-fossil certificate information in the image generation unit 39 of the account management server 4 as described above. The arrangement of characters at the bottom represents the non-fossil value information and non-fossil certificate information. The top row of the arrangement of characters indicates whether the NFT was issued based on non-fossil value information (displayed as <Non-fossil value>) or non-fossil certificate information (displayed as [Non-fossil certificate]). Below that, the amount of power generation, power generation type, current price, and bidding deadline (application deadline) are displayed. In this way, not only the arrangement of characters indicating the non-fossil value and non-fossil certificate information but also the image are displayed, so that each NFT can be visually distinguished and recognized.

As a method of displaying the NFT, it may be configured so that the upper part is an image and the lower part is text, as shown in Figure 6, or, for example, text may be displayed superimposed on the image.

When a user wishes to purchase an NFT, the user clicks on the image of the NFT for which they wish to make a bid from the auction bidding screen 60 shown in FIG. 6 to select it. Then, as shown in FIG. 7, the screen displays the bidding deadline for that NFT (displayed in the bidding deadline display field 63), the current price (displayed in the current price field 64), detailed information (displayed in the detailed information display field 67), a bid price input field 65, a "Make a bid" button 66, an image linked to the NFT (displayed in the image display field 62), and the like.

When the user enters the bid amount (purchase price) in the bid price input field 65 and clicks and presses the "Place Bid" button 66, the bid (buy order) is confirmed. This bid (buy order) information is sent to the account management server 4 as a buy order and is accepted by the buy order acceptance unit 50 of the account management server 4.

The purchase request notification unit 51 shown in FIG. 3 notifies the transaction management server 2 of a purchase request for an NFT based on a purchase order received by the purchase order reception unit 50. In other words, it participates in an auction to purchase the put-up NFT. When the transaction generation unit 26 completes a purchase transaction based on this purchase request, the account management unit 36 manages the NFT corresponding to this purchase request in the NFT account 35 of the user who placed the bid (purchase order).

The transaction information receiving unit 52 receives transaction information notified from the transaction management server 2. From this transaction information, it obtains the results of the trade, such as the success or failure of the transaction and the purchase amount.

The payment information storage unit 53 stores the payment information of each user, and trade settlement is carried out based on this information.

The communication unit 59 transmits and receives data to and from the outside via the communication line 10.

Figure 8 is a functional block schematic diagram of the non-fossil certificate management account holding server 8 of an external exchange. This non-fossil certificate management account holding server 8 is configured to include a control unit 80, a non-fossil certificate management account holding unit 81, a certified non-fossil certificate information receiving unit 82, a non-fossil certificate management account change information notifying unit 83, and a communication unit 89.

The control unit 80 is configured to include a CPU, auxiliary storage device, and RAM (not shown).

The non-fossil certificate management account holding unit 81 holds an exchange non-fossil certificate management account 86 for each user. When the non-fossil value is certified by the certification institution 7, a non-fossil certificate is issued, and the non-fossil certificate is managed in the exchange non-fossil certificate management account 86 of that user.

The certified non-fossil certificate information receiving unit 82 receives a notification from the certification body 7 informing that the non-fossil value has been certified by the certification body 7 and a non-fossil certificate has been issued.

The non-fossil certificate management account change information notification unit 83 adds the issued non-fossil certificate to the exchange non-fossil certificate management account 86 based on the notification from the certification institution 7 received by the certified non-fossil certificate information reception unit 82, and notifies the account management server 4 of management account change information notifying that a change has occurred to this management account 86.

The communication unit 89 transmits and receives data to and from the outside via the communication line 10.

Next, the operation of the non-fossil value trading system 1 according to this embodiment will be described.

Figure 9 is a diagram explaining the operation of the non-fossil value trading system 1 according to this embodiment, and shows an example of the flow of information managed in the account 32 of the account management server 4.

The outline of the operation flow shown in this diagram is as follows:

A power generation user operates a power generation user terminal 5 to access the account management server 4 and issues NFTs based on the non-fossil value. The power generation user then participates in a trade to sell the issued NFTs. Meanwhile, a general user operates a general user terminal 6 to access the account management server 4 and participates in a trade to purchase the NFTs that the power generation user wishes to sell. The general user who purchases NFTs as a result of the auction consumes the purchased NFTs.

Figure 9 shows the cases where an NFT is issued based on non-fossil value information and where an NFT is issued based on non-fossil certificate information.

First, I will explain the process for issuing NFTs based on non-fossil value information, and then:
We will explain the process for issuing NFTs based on information in a non-fossil certificate.

[Issuing NFTs based on non-fossil value information]
Because the power generation user owns the non-fossil power generation facility 9, power generation information such as the amount of electricity generated by the non-fossil power generation facility 9 is received by the power generation information receiving unit 37 of the account management server 4 (step S700). A non-fossil value is generated based on the received power generation information such as the amount of electricity, and the non-fossil value is accumulated in the power generation user's non-fossil value account 33. When the non-fossil value is accumulated in the non-fossil value account 33, the ledger recording unit 46 of the account management server 4 records the information on the non-fossil value in the ledger of the blockchain constituting the distributed database 3.

A power generation user accesses the account management server 4 from the power generation user terminal 5 and transmits a request to issue an NFT for a portion of the non-fossil value managed in the non-fossil value account 33. This request is received by the NFT issuance request reception unit 38 of the account management server 4, and non-fossil information is created from the information of the non-fossil value managed in the non-fossil value account 33. This non-fossil information includes an image automatically generated by the image generation unit 39 based on the information of the non-fossil value. The non-fossil information notification unit 40 of the account management server 4 transmits the non-fossil information to the transaction management server 2. This non-fossil information is received by the non-fossil information reception unit 21 of the transaction management server 2, and the issuing unit 22 issues an NFT based on the received non-fossil information. The ledger recording unit 23 of the transaction management server 2 records the issuance of the NFT in the ledger of the blockchain constituting the distributed database 3. Furthermore, the issuing unit 22 transmits NFT issuance information to the account management server 4, and the information is accepted by the NFT issuance information accepting unit 41 of the account management server 4. Based on this NFT issuance information, the account management unit 36 manages the issued NFT in the NFT account 35, and removes the non-fossil value that was the source of issuing the NFT from the non-fossil value account 33 (step S705). When the non-fossil value is removed from the non-fossil value account 33, the ledger recording unit 46 of the account management server 4 records the disappearance of the non-fossil value that was managed in the non-fossil value account 33 in the blockchain ledger.

The power generation user accesses the account management server 4 from the power generation user terminal 5 and transmits a sell order for the NFT managed in the NFT account 35. This sell order is accepted by the sell order acceptance unit 48 of the account management server 4, and a sell request corresponding to this sell order is notified to the transaction management server 2 from the sell request notification unit 49. This sell request is accepted by the sell request acceptance unit 24 of the transaction management server 2 (step S706).

On the other hand, a general user who wishes to purchase an NFT that has been put up for sale in response to a sale request from a power generation user accesses the account management server 4 from a general user terminal 6 and transmits a buy order. This buy order is accepted by the buy order acceptance unit 50 of the account management server 4, and a purchase request corresponding to this buy order is notified to the transaction management server 2 by the purchase request notification unit 51.

The auction is held on the transaction management server 2, and the transaction generation unit 26 establishes a buying and selling transaction between the selling request from the power generation user and the buying request from the general user (step S707). The ledger recording unit 23 of the transaction management server 2 records the transfer of ownership of the NFT for which the buying and selling transaction has been established in the blockchain ledger. In addition, transaction information indicating the result of the trade is sent from the transaction information notification unit 27 to the account management server 4. This transaction information is accepted by the transaction information acceptance unit 52 of the account management server 4. The account management unit 36 removes the management of the NFT for which the trade has been established from the power generation user's NFT account 35, and manages this NFT in the general user's NFT account 35 (step S708).

When a general user accesses the account management server 4 from the general user terminal 6 and notifies a consumption request for the purchased NFT, this consumption request is accepted by the consumption request acceptance unit 45 of the account management server 4. Since the NFT to be consumed was issued based on information on the non-fossil value, in this example, when it is consumed, the non-fossil value is applied for to the certification agency 7 and a non-fossil certificate is issued. The ledger recording unit 46 of the account management server 4 records the disappearance of the NFT in the blockchain ledger. The account management unit 36 removes the management of the consumed NFT from the NFT account 35 and manages the non-fossil value corresponding to the consumed NFT in the non-fossil value account 33 (step S709). When management of the non-fossil value in the non-fossil value account 33 begins, the ledger recording unit 46 of the account management server 4 records the information on the non-fossil value in the blockchain ledger. In addition, the non-fossil value application unit 43 applies for the non-fossil value corresponding to the consumed NFT to the certification institution 7 (step S710).

When the applied non-fossil value is certified by the certification organization 7, a non-fossil certificate is issued, and this non-fossil certificate is managed in the exchange non-fossil certificate management account 86 of the non-fossil certificate management account holding server 8 of the external exchange (step S711). The non-fossil certificate management account change information notification unit 83 of the non-fossil certificate management account holding server 8 notifies the account management server 4. This notification is accepted by the external account change information acceptance unit 44 of the account management server 4, and the account management unit 36 changes the content of the issued non-fossil certificate so that it is reflected in the non-fossil certificate account 34. Since the management of the non-fossil value managed in the non-fossil value account 33 is released and management of the non-fossil certificate is newly started in the non-fossil certificate account 34, the ledger recording unit 46 of the account management server 4 records the disappearance of the managed non-fossil value in the blockchain ledger, and records information about the non-fossil certificate that has started to be managed in the blockchain ledger.

[When issuing NFTs based on information in non-fossil certificates]
The power generation user accesses the account management server 4 from the power generation user terminal 5 and transmits a request to apply to the certification organization 7 for the non-fossil value managed in the non-fossil value account 33. This request is accepted by the non-fossil value application acceptance unit 42, and an application is made from the non-fossil value application unit 43 to the certification organization 7 (step S701). Since the non-fossil value that was managed in the power generation user's non-fossil value account 33 is released from management, the ledger recording unit 46 of the account management server 4 records the disappearance of the managed non-fossil value in the blockchain ledger.

When the applied non-fossil value is certified by the certification organization 7, a non-fossil certificate is issued, and this non-fossil certificate is managed in the exchange non-fossil certificate management account 86 of the non-fossil certificate management account holding server 8 of the external exchange (step S702). The non-fossil certificate management account change information notification unit 83 of the non-fossil certificate management account holding server 8 notifies the account management server 4 of the change information of the exchange non-fossil certificate management account 86. This notification is accepted by the external account change information acceptance unit 44 of the account management server 4, and based on this notification, the account management unit 36 changes the contents of the issued non-fossil certificate so that they are reflected in and synchronized with the non-fossil certificate account 34 (step S703). Since management of non-fossil certificates in the non-fossil certificate account 34 begins, the ledger recording unit 46 of the account management server 4 records the information of the issued non-fossil certificate in the blockchain ledger.

A power generation user accesses the account management server 4 from the power generation user terminal 5 and transmits a request to issue an NFT for a portion of the non-fossil certificates managed in the non-fossil certificate account 34. This request is received by the NFT issuance request reception unit 38 of the account management server 4, and non-fossil information is created from the information of the non-fossil certificates managed in the non-fossil certificate account 34. This non-fossil information includes an image automatically generated by the image generation unit 39 based on the information of the non-fossil certificate. The non-fossil information notification unit 40 of the account management server 4 transmits the non-fossil information to the transaction management server 2. This non-fossil information is received by the non-fossil information reception unit 21 of the transaction management server 2, and the issuing unit 22 issues an NFT based on the received non-fossil information. The ledger recording unit 23 of the transaction management server 2 records in the blockchain ledger that the NFT has been issued. Furthermore, the issuing unit 22 transmits NFT issuance information to the account management server 4, which is accepted by the NFT issuance information accepting unit 41 of the account management server 4. Based on this NFT issuance information, the account management unit 36 manages the issued NFT in the NFT account 35, and removes the management of the non-fossil certificate that was the source of the issuance of this NFT from the non-fossil certificate account 34 (step S704). In parallel, the ledger recording unit 46 of the account management server 4 records the disappearance of the non-fossil certificate that was managed in the non-fossil certificate account 34 in the blockchain ledger.

The power generation user accesses the account management server 4 from the power generation user terminal 5 and transmits a sell order for the NFT managed in the NFT account 35. This sell order is accepted by the sell order acceptance unit 48 of the account management server 4, and a sell request corresponding to this sell order is notified to the transaction management server 2 from the sell request notification unit 49. This sell request is accepted by the sell request acceptance unit 24 of the transaction management server 2 (step S706).

On the other hand, a general user who wishes to purchase an NFT that has been put up for sale in response to a sale request accesses the account management server 4 from a general user terminal 6 and transmits a buy order. This buy order is accepted by the buy order acceptance unit 50 of the account management server 4, and a purchase request corresponding to this buy order is notified to the transaction management server 2 by the purchase request notification unit 51.

An auction is held on the transaction management server 2, and the transaction generation unit 26 establishes a buying and selling transaction between the selling request from the power generation user and the buying request from the general user (step S707). The ledger recording unit 23 of the transaction management server 2 records the transfer of ownership of the NFT for which the buying and selling transaction has been established in the blockchain ledger. In addition, transaction information indicating the result of the trade is sent from the transaction information notification unit 27 to the account management server 4. This transaction information is accepted by the transaction information acceptance unit 52 of the account management server 4. The account management unit 36 removes the management of the NFT for which the trade has been established from the power generation user's NFT account 35, and manages this NFT in the general user's NFT account 35 (step S708). In addition, since the NFT transferred by the trade was issued based on the information of the non-fossil certificate, the non-fossil certificate corresponding to the transferred NFT is also transferred from the power generation user's exchange non-fossil certificate management account 86 to the general user's exchange non-fossil certificate management account 86 of the external exchange's non-fossil certificate management account holding server 8. This operation is executed by the account linkage unit 47 of the account management server 4.

When a general user accesses the account management server 4 from a general user terminal 6 and notifies the consumption request of the purchased NFT, this consumption request is accepted by the consumption request acceptance unit 45 of the account management server 4. Since the NFT to be consumed was issued based on the information of the non-fossil certificate, the account management unit 36 removes the management of the consumed NFT from the NFT account 35 and manages it as a consumed non-fossil certificate in the non-fossil certificate account 34 (step S713). Immediately after management of this non-fossil certificate in the non-fossil certificate account 34 begins due to consumption, the management of this non-fossil certificate is removed from the non-fossil certificate account 34 (it is managed as a consumed non-fossil certificate, not as a valid non-fossil certificate). In order to reflect this movement, the ledger recording unit 46 of the account management server 4 records the disappearance of this non-fossil certificate in the ledger immediately after recording the information of the non-fossil certificate in the blockchain ledger. Then, in order to reflect the effect of the consumption in the exchange non-fossil certificate management account 86 of the external exchange's non-fossil certificate management account holding server 8, the account linking unit 47 removes the consumed amount of non-fossil certificates from the management of the general user's exchange non-fossil certificate management account 86 (step S712).

Next, we will explain the effects of this embodiment.

According to this embodiment, trading of non-fossil value is possible.

Furthermore, according to this embodiment, both NFTs issued based on non-fossil value information and NFTs issued based on non-fossil certificate information are tradeable. In other words, non-fossil value at the stage before the non-fossil certificate is issued is also tradeable.

Furthermore, according to this embodiment, trades are conducted using non-fungible tokens (NFTs) that are issued based on non-fossil value information or non-fossil certificate information, and since NFTs use blockchain technology and are extremely difficult to copy or tamper with, highly secure transactions can be realized.

In addition, according to this embodiment, secondary distribution is possible, whereby NFTs can be repeatedly bought and sold, such as by selling purchased NFTs again.

Furthermore, according to this embodiment, an NFT is issued so that it contains not only the non-fossil value and non-fossil certificate information, but also an image generated based on the non-fossil value and non-fossil certificate information, and this NFT is used to conduct trading. By referring to this image, each NFT can be easily and clearly distinguished, and trading can be carried out smoothly.

In addition, according to this embodiment, the generated image is unique, i.e., one of a kind, and there are no other identical images, creating a sense of rarity and the value of the image itself may be evaluated.

In addition, according to this embodiment, a consumption function that eliminates NFTs is included, and the original non-fossil value and non-fossil certificate that issued the NFT that was eliminated through consumption may be recorded in carbon accounting. Also, an NFT issued based on non-fossil value may be consumed, and the non-fossil value corresponding to that NFT may be applied for to the certification organization 7 to issue a non-fossil certificate. In this way, the consumption function can be applied to various uses.

Furthermore, according to this embodiment, the results of the NFT trade are reflected in the NFT account 35.

In addition, according to this embodiment, the non-fossil value account 33, the non-fossil certificate account 34, and the NFT account 35 are managed separately, so that the user can easily grasp the status of his/her non-fossil value holdings. In addition, the results of the trade are automatically reflected in each account 33, 34, and 35, so that the user can comfortably trade without having to do complicated work.

In addition, according to this embodiment, each account 33, 34, and 35 is properly managed for consumption functions, so that consumption functions can be used hassle-free and with peace of mind.

In addition, according to this embodiment, the management status of the non-fossil certificate account 34 and the NFT account 35 coincides with the account contents of the exchange non-fossil certificate management account 86, so that synchronization of the contents between the accounts is achieved and no inconsistencies arise between this trading system 1 and the system of an external exchange.

Furthermore, according to this embodiment, since the information on the non-fossil value managed in the non-fossil value account 33 is recorded in the blockchain ledger, it is extremely difficult to tamper with the information on the non-fossil value, and the non-fossil value can be managed safely. Similarly, since the information on the non-fossil certificate managed in the non-fossil certificate account 34 is recorded in the blockchain ledger, it is extremely difficult to tamper with the information on the non-fossil certificate, and the non-fossil certificate can be managed safely.

[Other embodiments of the invention]
The present invention is not limited to the above-described embodiment and may be modified as appropriate. For example, the transaction management server 2 and the account management server 4 may be configured as a single server. Furthermore, multiple transaction management servers 2 and multiple account management servers 4 may be provided.

In addition, in the embodiment, the process of issuing NFTs and recording them on the blockchain is performed by the transaction management server 2, but this process may be performed by an account management server 4 or another server. In addition, the process of issuing NFTs and recording them on the blockchain may be performed by the power generation user terminal 5, the general user terminal 6, etc.

In addition, the functions realized by the account management server 4 in the embodiment may be provided in the power generation user terminal 5 or the general user terminal 6.

Reference Signs List 1: Non-fossil value trading system, 2: Trading management server, 3: Distributed database (blockchain), 4: Account management server, ₅ , 51, ₅₂ , _5j : Power generation user terminal, ₆ , 61, ₆₂ , _6n : General user terminal, 7: Certification agency, 8: Non-fossil certificate management account holding server of external exchange, 9, ₉₁ , ₉₂ , _9k ...Non-fossil power generation facility (non-fossil power generation equipment), 10...communication line, 11...digital data storage server, 20...control unit, 21...non-fossil information reception unit, 22...issuance unit, 23...ledger recording unit, 24...sale request reception unit, 25...purchase request reception unit, 26...transaction generation unit, 27...transaction information notification unit, 30...control unit, 31...account holding unit, 32...account, 33...non-fossil value account, 34...non-fossil certificate account, 35...NFT account, 36...account management unit, 37...power generation information reception unit, 38...NFT issuance request reception unit, 39...image generation unit, 40...non-fossil information communication notification unit, 41...NFT issuance information reception unit, 42...Non-fossil value application reception unit, 43...Non-fossil value application unit, 44...External account change information reception unit, 45...Consumption request reception unit, 46...Ledger recording unit, 47...Account linkage unit, 48...Sell order reception unit, 49...Sell request notification unit, 50...Buy order reception unit, 51...Purchase request notification unit, 52...Transaction information reception unit, 53...Settlement information storage unit, 80...Control unit, 81...Non-fossil certificate management account storage unit, 82...Certified non-fossil certificate information reception unit, 83...Non-fossil certificate management account change information notification unit, 86...Exchange non-fossil certificate management account

Claims (10)

A non-fossil value trading system that trades non-fossil value, which is the environmental value of electricity generated without emitting carbon dioxide by a non-fossil power source that generates electricity without using fossil fuels,
An issuing unit that issues non-fungible tokens based on non-fossil information including information on non-fossil value generated based on power generation by a non-fossil power generation facility and including the amount of power generated by the non-fossil power generation facility, or information on a non-fossil certificate issued as a certificate by a certification organization certifying the non-fossil value;
an image generating unit that automatically generates an image based on data included in the non-fossil value information or data included in the non-fossil certificate information;
A sale request receiving unit that receives a sale request for the non-fungible token issued by the issuing unit;
A purchase request receiving unit that receives a purchase request for the non-fungible token;
A transaction generation unit that establishes a buying and selling transaction based on the selling request for the non-fungible token accepted by the selling request acceptance unit and the buying request accepted by the buying request acceptance unit;
A ledger recording unit that records the non-fungible token in a ledger of a blockchain that constitutes a distributed database,
The non-fossil information includes a generated image generated by the image generation unit,
The issuing unit:
issuing the non-fungible token based on the non-fossil value information or the non-fossil certificate information included in the non-fossil information and the generated image;
The ledger recording unit includes:
When the issuing unit issues the non-fungible token, the issuance of the non-fungible token is recorded in the ledger of the blockchain;
A non-fossil value trading system characterized in that, when the purchase and sale transaction of the non-fungible token is concluded in the transaction generation unit, the transfer of ownership of the non-fungible token is recorded in the blockchain ledger. A non-fossil value trading system that trades non-fossil value, which is the environmental value of electricity generated without emitting carbon dioxide by a non-fossil power source that generates electricity without using fossil fuels,
An issuing unit that issues non-fungible tokens based on non-fossil information including information on non-fossil value generated based on power generation by a non-fossil power generation facility and including the amount of power generated by the non-fossil power generation facility, or information on a non-fossil certificate issued as a certificate by a certification organization certifying the non-fossil value;
A sale request receiving unit that receives a sale request for the non-fungible token issued by the issuing unit;
A purchase request receiving unit that receives a purchase request for the non-fungible token;
A transaction generation unit that establishes a buying and selling transaction based on the selling request for the non-fungible token accepted by the selling request acceptance unit and the buying request accepted by the buying request acceptance unit;
A ledger recording unit that records the non-fungible token in a ledger of a blockchain that constitutes a distributed database,
The ledger recording section includes:
When the issuing unit issues the non-fungible token, the issuance of the non-fungible token is recorded in the ledger of the blockchain;
When the transaction generation unit establishes the purchase and sale transaction of the non-fungible token, a transfer of ownership of the non-fungible token is recorded in a ledger of the blockchain ,
moreover,
A non-fossil value account for managing the non-fossil value;
a non-fossil certificate account for managing said non-fossil certificates;
and an NFT account for managing the non-fungible token;
an account management unit that manages the non-fossil value account, the non-fossil certificate account, and the NFT account;
When the non-fungible token is issued based on the non-fossil value managed in the non-fossil value account, the account management unit:
The issued non-fungible token is managed in the NFT account, and the non-fossil value that was the source of the issuance of the non-fungible token is removed from the management of the non-fossil value account;
When the non-fungible token is issued based on the non-fossil certificate managed in the non-fossil certificate account, the account management unit:
Manage the issued non-fungible token in the NFT account, and remove the non-fossil certificate from which the non-fungible token was issued from the non-fossil certificate account;
When the non-fossil value managed in the non-fossil value account is applied for to the certification organization, and the certification organization is certified and the non-fossil certificate is issued, the account management unit
A non-fossil value trading system characterized by managing the issued non-fossil certificate in the non-fossil certificate account and removing the non-fossil value used in the application from the management of the non-fossil value account . a consumption request receiving unit that receives a consumption request to extinguish the non-fungible token;
When the consumption request is received by the consumption request receiving unit, the ledger recording unit:
The non-fossil value trading system according to claim 1 or 2, characterized in that the extinction of the non-fungible token for which the consumption request has been made is recorded in a ledger of the blockchain. A non-fossil value account for managing the non-fossil value;
a non-fossil certificate account for managing said non-fossil certificates;
and an NFT account for managing the non-fungible token;
an account management unit that manages the non-fossil value account, the non-fossil certificate account, and the NFT account;
When the non-fungible token is issued based on the non-fossil value managed in the non-fossil value account, the account management unit:
The issued non-fungible token is managed in the NFT account, and the non-fossil value that was the source of the issuance of the non-fungible token is removed from the management of the non-fossil value account;
When the non-fungible token is issued based on the non-fossil certificate managed in the non-fossil certificate account, the account management unit:
Manage the issued non-fungible token in the NFT account, and remove the non-fossil certificate from which the non-fungible token was issued from the non-fossil certificate account;
When the non-fossil value managed in the non-fossil value account is applied for to the certification organization, and the certification organization is certified and the non-fossil certificate is issued, the account management unit
2. The non-fossil value trading system according to claim 1, characterized in that the issued non-fossil certificate is managed in the non-fossil certificate account, and the non-fossil value used in the application is removed from the management of the non-fossil value account. an image generating unit that automatically generates an image based on data included in the non-fossil value information or data included in the non-fossil certificate information;
The non-fossil information includes a generated image generated by the image generation unit,
The issuing unit:
The non-fossil value trading system according to claim 2 , characterized in that the non-fungible token is issued based on the non-fossil value information or the non-fossil certificate information included in the non-fossil information and the generated image. A non-fossil value trading system that trades non-fossil value, which is the environmental value of electricity generated without emitting carbon dioxide by a non-fossil power source that generates electricity without using fossil fuels,
An issuing unit that issues non-fungible tokens based on non-fossil information including information on non-fossil value generated based on power generation by a non-fossil power generation facility and including the amount of power generated by the non-fossil power generation facility, or information on a non-fossil certificate issued as a certificate by a certification organization certifying the non-fossil value;
A sale request receiving unit that receives a sale request for the non-fungible token issued by the issuing unit;
A purchase request receiving unit that receives a purchase request for the non-fungible token;
A transaction generation unit that establishes a buying and selling transaction based on the selling request for the non-fungible token accepted by the selling request acceptance unit and the buying request accepted by the buying request acceptance unit;
A ledger recording unit that records the non-fungible tokens in a ledger of a blockchain that constitutes a distributed database;
a consumption request receiving unit that receives a consumption request to extinguish the non-fungible token,
The ledger recording unit includes:
When the issuing unit issues the non-fungible token, the issuance of the non-fungible token is recorded in the ledger of the blockchain;
When the transaction generation unit establishes the purchase and sale transaction of the non-fungible token, a transfer of ownership of the non-fungible token is recorded in a ledger of the blockchain,
When the consumption request is received by the consumption request receiving unit, the ledger recording unit
The extinction of the non-fungible token for which the consumption request has been made is recorded in a ledger of the blockchain;
moreover,
A non-fossil value account for managing the non-fossil value;
a non-fossil certificate account for managing said non-fossil certificates;
and an NFT account for managing the non-fungible token;
an account management unit that manages the non-fossil value account, the non-fossil certificate account, and the NFT account;
a non-fossil value application unit that applies for the non-fossil value to the certification organization;
When the non-fungible token is issued based on the non-fossil value managed in the non-fossil value account, the account management unit:
The issued non-fungible token is managed in the NFT account, and the non-fossil value that was the source of the issuance of the non-fungible token is removed from the management of the non-fossil value account;
When the non-fungible token is issued based on the non-fossil certificate managed in the non-fossil certificate account, the account management unit:
Manage the issued non-fungible token in the NFT account, and remove the non-fossil certificate from which the non-fungible token was issued from the non-fossil certificate account;
When the non-fossil value managed in the non-fossil value account is applied for to the certification organization, and the certification organization is certified and the non-fossil certificate is issued, the account management unit
Manage the issued non-fossil certificate in the non-fossil certificate account, and remove the non-fossil value used in the application from the non-fossil value account;
When the consumption request is received by the consumption request receiving unit,
When the non-fungible token for which the consumption request has been made has been issued based on information of the non-fossil certificate, the account management unit:
Remove the non-fungible token for which the consumption request was made from the management of the NFT account;
If the non-fungible token requested for consumption is issued based on the non-fossil value information,
The account management unit:
Remove the non-fungible token for which the consumption request was made from the management of the NFT account;
When the non-fossil value application unit applies to the certification organization for the non-fossil value that was the basis for issuing the non-fungible token for which the consumption request was made, and the non-fossil value is certified by the certification organization and the non-fossil certificate is issued, the account management unit:
A non- fossil value trading system, characterized in that the issued non-fossil certificates are managed in the non-fossil certificate account. When the sale request is established in the buying and selling transaction established by the transaction generation unit, the account management unit
removing the non-fungible tokens corresponding to the sale request from management in the NFT account;
When the purchase request is established in the buying and selling transaction, the account management unit:
The non-fossil value trading system according to claim 2, 4 or 6, characterized in that the non-fungible token corresponding to the purchase request is managed in the NFT account. An account linking unit that accesses an exchange non-fossil certificate management account provided in an external exchange and changes the account contents so that the non-fossil certificate account and the NFT account are linked,
When the account management unit makes a change to the management of the non-fossil certificate account or the NFT account, the account linkage unit:
8. The non-fossil value trading system according to claim 7, further comprising: an exchange non-fossil certificate management account that changes the account contents of the exchange non-fossil certificate management account so that the non-fossil certificates stored in the exchange non-fossil certificate management account match all of the non-fossil certificates, which are a combination of all of the non-fossil certificates managed in the non-fossil certificate account and all of the non-fossil certificates that were the basis for issuing the non-fungible tokens managed in the NFT account, after the change. The ledger recording unit includes:
The non-fossil value information and the non-fossil certificate information are recorded in the blockchain ledger,
When management of the non-fossil value is started in the non-fossil value account, the ledger recording unit records information about the non-fossil value in a ledger of the blockchain, and when management of the non-fossil value is removed from the non-fossil value account, the ledger recording unit records the disappearance of the non-fossil value recorded at the start of management in the ledger of the blockchain;
7. The non-fossil value trading system according to claim 2, 4, or 6, characterized in that, when management of the non-fossil certificate is initiated in the non-fossil certificate account, the ledger recording unit records information about the non-fossil certificate in a ledger of the blockchain, and, when management of the non-fossil certificate is removed from the non-fossil certificate account, the ledger recording unit records the extinction of the non-fossil certificate recorded at the start of management in the ledger of the blockchain. The ledger recording unit includes:
The non-fossil value information and the non-fossil certificate information are recorded in the blockchain ledger,
When management of the non-fossil value is started in the non-fossil value account, the ledger recording unit records information about the non-fossil value in a ledger of the blockchain, and when management of the non-fossil value is removed from the non-fossil value account, the ledger recording unit records the disappearance of the non-fossil value recorded at the start of management in the ledger of the blockchain;
8. The non-fossil value trading system according to claim 7, characterized in that, when management of the non-fossil certificate is initiated in the non-fossil certificate account, the ledger recording unit records information about the non-fossil certificate in the blockchain ledger, and, when management of the non - fossil certificate is removed from the non-fossil certificate account, the ledger recording unit records the extinction of the non-fossil certificate recorded at the initiation of management in the blockchain ledger.

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