Carbon dioxide emission right transaction support system and carbon dioxide emission right transaction support method

Abstract

To provide a technique easy to facilitate consumption of carbon dioxide.SOLUTION: A carbon dioxide emission right transaction support system 8 includes an administrative system 10 having a token issuance part 10A, and an administrator wallet 20 associated with the administrative system 10. If a consumption signal associated with a user / utilizer account and a user / utilizer wallet 40 and configured to notify a user of a consumption amount of carbon dioxide is transmitted to the administrative system 10 from a user / utilizer terminal 30 associated with the user / utilizer account, a token issuance part 10A issues a token according to the consumption signal, and the administrative system 10 conducts a command to store the issued token in the user / utilizer wallet 40.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a carbon dioxide emission trading support system and a carbon dioxide emission trading support method. [Background technology]

[0002] Patent Document 1 discloses a carbon dioxide emission rights trading system. The system disclosed in Patent Document 1 is composed of multiple trading terminals and a trading site. In this system, the multiple trading terminals are equipped with a means for transmitting sell orders and buy orders including trading conditions for carbon dioxide emission rights to the trading site, and a means for receiving and outputting information indicating the results of trading from the trading site. In this system, the trading site is equipped with an acceptance means for accepting sell orders and buy orders for carbon dioxide emission rights from the trading terminals, a matching means for identifying those that match the trading conditions, and the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-149978 A Summary of the Invention [Problem to be solved by the invention]

[0004] The trading system disclosed in Patent Document 1 is one in which a trading site matches the trading conditions of buy and sell orders when trading carbon dioxide emission rights. With this trading system, those who do not have emission rights cannot acquire emission rights by consuming (reducing) carbon dioxide, and those who have emission rights cannot increase their emission rights by consuming (reducing) carbon dioxide. Therefore, it is difficult to promote carbon dioxide consumption (reduction), and there is room for improvement.

[0005] An object of the present invention is to provide a technique that can easily promote the consumption (reduction) of carbon dioxide. [Means for solving the problem]

[0006] A carbon dioxide emission trading support system according to one aspect of the present invention comprises: A management system having a token issuing unit that issues tokens; an administrator wallet associated with the management system; Equipped with When a user account is associated with a user wallet and a consumption signal notifying the amount of carbon dioxide consumption is sent to the management system from a user terminal associated with the user account, the token issuing unit issues the token based on the consumption signal, and the management system instructs the issued token to be stored in the user wallet.

[0007] A method for supporting carbon dioxide emission trading according to one aspect of the present invention includes the steps of: A management system having a token issuing unit that issues tokens; an administrator wallet associated with the management system; Using When a user account and a user wallet are associated and a consumption signal notifying the amount of carbon dioxide consumption is transmitted to the management system from a user terminal associated with the user account, the token issuing unit issues the token based on the consumption signal, and the management system instructs the issued token to be stored in the user wallet. Effect of the Invention

[0008] The present invention tends to promote the consumption (reduction) of carbon dioxide. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is an explanatory diagram illustrating a schematic diagram of a trading system to which a carbon dioxide emission rights trading support system according to a first embodiment is applied. [Diagram 2]FIG. 2 is an explanatory diagram for explaining the trading system of FIG. 1 from a different perspective than that of FIG. [Diagram 3] Fig. 3(A) is an explanatory diagram showing a simplified correspondence between an administrator account and an administrator wallet stored in the blockchain. Fig. 3(B) is an explanatory diagram showing a simplified correspondence between each user account and each user wallet stored in the blockchain. Fig. 3(C) is an explanatory diagram showing a simplified correspondence between each emitter account and each emitter wallet stored in the blockchain. [Figure 4] Figure 4 is an explanatory diagram illustrating data exchange between the management system, user terminal, discarder terminal, and each wallet in the transaction system of Figure 1. [Diagram 5] FIG. 5 is an explanatory diagram for explaining data exchange in a method different from that in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Examples of embodiments are listed in [1] to

[20] below.

[0011] [1] A management system having a token issuing unit that issues tokens; an administrator wallet associated with the management system; Equipped with When a user account and a user wallet are associated with each other and a consumption signal notifying an amount of carbon dioxide consumption is transmitted from a user terminal associated with the user account to the management system, the token issuing unit issues the token based on the consumption signal, and the management system instructs the user wallet to store the issued token. Carbon dioxide emissions trading support system.

[0012] The support system described above in [1] can provide incentives to users who contribute to carbon dioxide consumption (reduction) by granting tokens to their wallets.

[0013] [2] When a sale request requesting the sale of the tokens stored in the user wallet is notified from the user terminal to the management system, the management system transfers the tokens from the user wallet to the administrator wallet based on the sale request. A carbon dioxide emissions trading support system as described in [1].

[0014] The support system described above in [2] executes a transaction to transfer tokens from the user wallet to the administrator wallet based on the request. This allows tokens stored in the user wallet to be transferred to the administrator wallet at any time based on a sale request, making it easier for users to use tokens more freely.

[0015] [3] When a emitter account and an emitter wallet are associated with each other and a purchase request for purchasing the tokens is notified to the management system from a emitter terminal associated with the emitter account, the management system transfers the tokens from the administrator wallet to the emitter wallet based on the purchase request. [2] A carbon dioxide emissions trading support system as described in the above.

[0016] The support system described in [3] above executes a transaction to transfer tokens from the administrator wallet to the emitter wallet based on the request when a sell request is received from the user terminal and a buy request is received from the emitter terminal. This makes it possible to transfer tokens from the user wallet to the administrator wallet first, and then to the emitter wallet. This support system makes it easy to transfer tokens from the user wallet to the emitter wallet even if the sell request and the buy request are not made at the same time.

[0017] [4] When a payer account and a payer wallet are associated with each other, a purchase request requesting the purchase of the token is notified to the management system from a payer terminal associated with the payer account, and a sale request requesting the sale of the token held by the user wallet is notified to the management system from the user terminal, the management system transfers the token from the user wallet to the payer wallet based on the purchase request and the sale request. A carbon dioxide emissions trading support system according to [1] or [2].

[0018] In the support system described above in [4], when a sale request is received from the user terminal and a purchase request is received from the emitter terminal, the management system executes a transaction to transfer tokens from the user wallet to the emitter wallet based on the request. This makes it possible to omit temporary storage in the administrator wallet and transfer tokens from the user wallet to the emitter wallet. Therefore, this support system can further reduce the burden on the administrator wallet.

[0019] [5] The management system includes a certificate issuing unit, When the token is stored in the emitter wallet, after an issuance request for issuing a certificate for emission rights is notified from the emitter terminal to the management system, the management system erases the token stored in the emitter wallet based on the issuance request, and the certificate issuing unit issues the certificate for emission rights to the emitter account. A carbon dioxide emissions trading support system according to [3] or [4].

[0020] The support system [5] above can use the emission rights certificate to prove that the person operating the emitter terminal (emitter) has used the token and obtained emission rights from a third party.

[0021] [6] The management system includes a certificate issuing unit, The certificate issuing unit issues a consumption certificate to the user account based on the consumption signal. A carbon dioxide emission trading support system according to any one of [1] to [5].

[0022] The support system described above in [6] can issue consumption certificates to user accounts based on consumption signals, making it possible for the consumption certificates to be used as proof that the person corresponding to the user account (the user) is contributing to carbon dioxide consumption.

[0023] [7] The user terminal generates and transmits the consumption signal based on a monitoring result by a consumption monitoring unit that monitors the user's carbon dioxide consumption. A carbon dioxide emission trading support system according to any one of [1] to [6].

[0024] The support system described above in [7] can issue tokens in an amount that reflects the actual consumption situation, reflecting the highly accurate consumption amount obtained based on the monitoring results of the consumption monitoring unit.

[0025] [8] The token issuing unit issues the token with a set expiration date; An invalidation unit that invalidates the token when the expiration date set for the token has elapsed. A carbon dioxide emission trading support system according to any one of [1] to [7].

[0026] The support system described above in [8] can issue tokens based on consumption signals and operate the tokens with a set deadline.

[0027] [9] The management system hashes and records at least one of the history of the consumption signal and the history of the token transactions on a blockchain. A carbon dioxide emission trading support system according to any one of [1] to [8].

[0028] The support system described above in [9] can use a blockchain to manage at least one of the consumption signal history and the token transaction history, thereby preventing tampering with the history and enabling the system to be operated more stably.

[0029]

[10] A management system having a token issuing unit that issues tokens; an administrator wallet associated with the management system; Using When a user account and a user wallet are associated with each other and a consumption signal notifying an amount of carbon dioxide consumption is transmitted from a user terminal associated with the user account to the management system, the token issuing unit issues the token based on the consumption signal, and the management system instructs the user wallet to store the issued token. A method to support carbon dioxide emissions trading.

[0030] The carbon dioxide emissions trading support method described above in

[10] can provide incentives to users who contribute to carbon dioxide consumption (reduction) by granting tokens to their wallets.

[0031]

[11] When a sale request requesting the sale of the tokens stored in the user wallet is notified from the user terminal to the management system, the management system transfers the tokens from the user wallet to the administrator wallet based on the sale request. The carbon dioxide emission trading support method according to

[10] .

[0032] The carbon dioxide emission trading support method described above in

[11] has the same effects as the carbon dioxide emission trading support system described above in [2].

[0033]

[12] When a emitter account and an emitter wallet are associated with each other and a purchase request for purchasing the tokens is notified to the management system from a emitter terminal associated with the emitter account, the management system transfers the tokens from the administrator wallet to the emitter wallet based on the purchase request. The carbon dioxide emission trading support method according to

[11] .

[0034] The carbon dioxide emission trading support method described above in

[12] has the same effects as the carbon dioxide emission trading support system described above in [3].

[0035]

[13] When a payer account and a payer wallet are associated with each other, a purchase request requesting the purchase of the token is notified to the management system from a payer terminal associated with the payer account, and a sale request requesting the sale of the token held by the user wallet is notified to the management system from the user terminal, the management system transfers the token from the user wallet to the payer wallet based on the purchase request and the sale request. A carbon dioxide emissions trading support method according to

[10] or

[11] .

[0036] The carbon dioxide emission trading support method described above in

[13] has the same effects as the carbon dioxide emission trading support system described above in [4].

[0037]

[14] The management system includes a certificate issuing unit, When the token is stored in the emitter wallet, after an issuance request for issuing a certificate for emission rights is notified from the emitter terminal to the management system, the management system erases the token stored in the emitter wallet based on the issuance request, and the certificate issuing unit issues the certificate for emission rights to the emitter account. A carbon dioxide emissions trading support method according to

[12] or

[13] .

[0038] The carbon dioxide emission trading support method described above in

[14] has the same effects as the carbon dioxide emission trading support system described above in [5].

[0039]

[15] The management system includes a certificate issuing unit, The certificate issuing unit issues a consumption certificate to the user account based on the consumption signal. A carbon dioxide emission trading support method according to any one of

[10] to

[14] .

[0040] The carbon dioxide emission trading support method described above in

[15] has the same effects as the carbon dioxide emission trading support system described above in [6].

[0041]

[16] The user terminal generates and transmits the consumption signal based on a monitoring result by a consumption monitoring unit that monitors the user's carbon dioxide consumption. A method for supporting carbon dioxide emission rights trading according to any one of [9] to

[15] .

[0042] The carbon dioxide emission trading support method described above in

[17] has the same effects as the carbon dioxide emission trading support system described above in [7].

[0043]

[17] The token issuing unit issues the token with a set expiration date; An invalidation unit that invalidates the token when the expiration date set for the token has elapsed. A method for supporting carbon dioxide emission trading according to any one of

[10] to

[16] .

[0044] The carbon dioxide emission trading support method described above in

[17] has the same effects as the carbon dioxide emission trading support system described above in [8].

[0045]

[18] The management system hashes and records at least one of the history of the consumption signal and the history of the token transactions on a blockchain. A carbon dioxide emission trading support method according to any one of

[10] to

[17] .

[0046] The carbon dioxide emission trading support method described above in

[18] has the same effects as the carbon dioxide emission trading support system described above in [9].

[0047]

[19] A carbon dioxide emission rights trading support system including a management system having a token issuing unit that issues tokens and an administrator wallet associated with the management system, When a user account is associated with a user wallet and a consumption signal notifying an amount of carbon dioxide consumption is transmitted to the management system from a user terminal associated with the user account, the token issuing unit is caused to perform a process of issuing the token based on the consumption signal, and an instruction is given to the management system to store the issued token in the user wallet. A program used in the carbon dioxide emissions trading support system.

[0048] The program described above in

[20] will have the same effects as the carbon dioxide emissions trading support system described above in [1].

[0049]

[20] A carbon dioxide emission rights trading support system including a management system having a token issuing unit that issues tokens, an administrator wallet associated with the management system, and a user wallet associated with a user account, the emission rights trading support system is a system in which, when a consumption signal notifying an amount of carbon dioxide consumption is transmitted to the management system, the token issuing unit issues the token based on the consumption signal to the user wallet; A user terminal associated with the user account is caused to perform a process of generating the consumption signal and transmitting the consumption signal to the management system. A program used in the carbon dioxide emissions trading support system.

[0050] The program

[20] above can cause the user terminal to perform the process of generating and transmitting a consumption signal.

[0051] First Embodiment 1. Structure of the Carbon Dioxide Emissions Trading System 1 FIG. 1 is an explanatory diagram conceptually showing a carbon dioxide emission trading system 1. The carbon dioxide emission trading system 1 is also simply referred to as a trading system 1. In a representative example of the trading system 1 described below, a carbon dioxide emission trading support system 8 is realized by including at least a management system 10 and an administrator wallet 20 (FIG. 3). Note that the administrator wallet 20 (FIG. 3) is omitted in FIGS. 1 and 2. The carbon dioxide emission trading support system 8 is also simply referred to as a support system 8.

[0052] The trading system 1 has a plurality of nodes 2. Each node 2 is a device that realizes a blockchain. The blockchain realized by the plurality of nodes 2 may be a public blockchain (public chain), a private blockchain (private chain), or another type of blockchain.

[0053] When the trading system 1 is realized as a private blockchain, when each transaction described later is executed, a transaction indicating the transaction content is generated, and the generated transaction is verified and approved by multiple nodes 2. Then, a predetermined node such as an administrator node (for example, node 2 constituting the management system 10) or a node designated by the administrator node calculates a hash value, and a block is composed of transactions that have been approved using the calculated hash value. The composed block is added to the blockchain and distributed and stored in each node 2. On the other hand, when the trading system 1 is realized as a public blockchain, when each transaction described later is executed, a transaction indicating the transaction content is generated, and the generated transaction is verified and approved by node 2. Then, one of the miners calculates a hash value, and a block is composed of transactions that have been approved using the calculated hash value. The composed block is added to the blockchain and distributed and stored in each node 2.

[0054] Each node 2 constituting the trading system 1 is constituted by, for example, an information processing device such as a server, a personal computer, etc. In Fig. 1, six nodes 2 are illustrated, but the number of nodes 2 may be more or less than that in the example of Fig. 1.

[0055] Some of the multiple nodes 2 constitute a management system 10. The management system 10 includes a control unit 11, a communication unit 12, a storage unit 13, an input unit 14, an output unit 15, and the like. The storage unit 13 is a device that stores programs, parameters, and the like. The control unit 11 executes various functions and processes of the node 2 according to various data such as programs and parameters stored in the storage unit 13. The communication unit 12 is a device that cooperates with the control unit 11 to perform wired or wireless communication with an external device. The input unit 14 is an input device such as an operating device, and the output unit 15 is an output device such as a display device. The management system 10 may be configured by one device (for example, one server device) or may be configured by multiple devices.

[0056] Some of the multiple nodes 2 constitute a user terminal 30. The user terminal 30 has a control unit 31, a communication unit 32, a storage unit 33, an input unit 34, an output unit 35, etc. The hardware configuration of the user terminal 30 may be the same as or different from the hardware configuration of the management system 10.

[0057] Some of the multiple nodes 2 constitute a discharger terminal 50. The discharger terminal 50 has a control unit 51, a communication unit 52, a storage unit 53, an input unit 54, an output unit 55, etc. The hardware configuration of the discharger terminal 50 may be the same as or different from the hardware configuration of the management system 10.

[0058] 1 omits specific configurations of nodes 2 other than the management system 10, the user terminal 30, and the discarder terminal 50, but any of the nodes 2 whose specific configurations are omitted may be configured as the user terminal 30 or as the discarder terminal 50. The user terminal 30 shown in FIG. 1 may have the function of the discarder terminal 50. The discarder terminal 50 may have the function of the user terminal 30.

[0059] As shown in FIG. 2, the management system 10 includes a token issuing unit 10A and a certificate issuing unit 10B. In a representative example described below, the control unit 11 (FIG. 1) functions as the token issuing unit 10A and the certificate issuing unit 10B. The token issuing unit 10A has a function of issuing tokens. The certificate issuing unit 10B has a function of issuing emission right certificates and consumption certificates. Tokens are virtual currencies or rights used for transactions in the trading system 1.

[0060] As shown in FIG. 2, a base equipped with a user terminal 30 is provided with a carbon dioxide consumption unit 44 that consumes carbon dioxide, and a consumption monitoring unit 42 that monitors the amount of carbon dioxide consumed by the carbon dioxide consumption unit 44. The carbon dioxide consumption unit 44 is exemplified by, for example, a methanation device that produces methane from hydrogen and carbon dioxide. The carbon dioxide consumption unit 44 is not limited to a known methanation device, and may be any device that consumes carbon dioxide and converts or produces another substance. The consumption monitoring unit 42 may be configured to detect the amount of carbon dioxide consumed (reduced) by the carbon dioxide consumption unit 44, and for example, when the carbon dioxide consumption unit 44 is the methanation device, it detects the amount of carbon dioxide consumed (reduced) in the process of the methanation device producing methane.

[0061] In this embodiment, as shown in FIG. 3(A), an administrator account is assigned in association with an administrator, an administrator wallet 20 is associated with the administrator account, and the administrator account and the administrator wallet are associated and stored in the blockchain 100. The administrator account is identification information that identifies the administrator. The administrator is an entity that manages the issuance of tokens. In the blockchain 100, once the administrator account is identified, the contents of the administrator wallet 20 are identified. The administrator wallet 20 is a wallet associated with the management system 10, a virtual place for storing tokens (administrator tokens) handled by the management system 10, and a virtual place associated with the administrator account.

[0062] In this embodiment, a user account is assigned in association with each user, and a user wallet 40 is associated with each user account. For example, as shown in FIG. 3(B), each user account and each user wallet are associated and stored in the blockchain 100. A user account is an account associated with a user wallet, and is identification information that identifies a user. A user is an entity that receives tokens by consuming carbon dioxide. A user wallet is a virtual place for storing tokens held by a user, and is a virtual storage place associated with a user account. In the blockchain 100, for example, if a user account A1 is identified, the contents of a user wallet A2 associated with the user account A1 are identified. A user terminal 30 is a terminal used when performing communication or transactions based on a user account, and is a terminal associated with a user account. The user terminal 30 may include a consumption amount monitoring unit 42 (FIG. 2), or may be separate from the consumption amount monitoring unit 42.

[0063] In this embodiment, a emitter account is assigned in association with each emitter, and an emitter wallet 60 is associated with each emitter account. For example, as shown in FIG. 3(C), each emitter account and each emitter wallet are associated and stored in the blockchain 100. The emitter account is an account associated with the emitter wallet, and is identification information that identifies the emitter. The emitter is an entity that purchases tokens. Note that a user may become an emitter, and an emitter may become a user. The emitter wallet is a virtual place for storing tokens held by the emitter, and is a virtual storage place associated with the emitter account. In the blockchain 100, for example, if the emitter account P1 is identified, the contents of the emitter wallet P2 associated with the emitter account P1 are identified. The emitter terminal 50 (FIG. 1, etc.) associated with the emitter account is a terminal used when performing communication or transactions based on the emitter account.

[0064] 2. Operation of Carbon Dioxide Emissions Trading System 1 In the trading system 1, the user terminal 30 generates and transmits a consumption signal based on the monitoring result by the consumption monitoring unit 42. When carbon dioxide is consumed in the carbon dioxide consumption unit 44, the consumption monitoring unit 42 detects the amount consumed in the carbon dioxide consumption unit 44 and provides it to the user terminal 30. When the user terminal 30 obtains the amount of carbon dioxide consumption from the consumption monitoring unit 42, it transmits a consumption signal including information on the consumption amount to the management system 10, as shown in Fig. 4.

[0065] As shown in FIG. 4, when a consumption signal (a signal notifying the utilization user's carbon dioxide consumption) is transmitted from the utilization user terminal 30 associated with the utilization user account to the management system 10, the token issuing unit 10A (FIG. 2) of the management system 10 issues a token based on the consumption signal. The token issuing unit 10A converts the consumption amount specified by the consumption signal transmitted by the utilization user terminal 30 into tokens based on the information, with the carbon dioxide consumption amount per token being predetermined. The carbon dioxide consumption amount per token is, for example, 1 t. In this example, when the carbon dioxide consumption amount specified by the consumption signal is 10 t, the token issuing unit 10A issues 10 tokens. When issuing a token, the token issuing unit 10A issues the token with a set expiration date. The expiration date may be, for example, until a predetermined number of days have passed from the date of issue (for example, until 8 years have passed), or until a predetermined date has arrived.

[0066] The token issuing unit 10A also functions as an invalidation unit, and performs processing to invalidate a token when the expiration date set for the token has passed. When invalidating a token, the token issuing unit 10A may operate to instruct a wallet that holds the token whose expiration date has passed to delete the token, or may invalidate the token by other methods.

[0067] When the token issuing unit 10A issues a token, the management system 10 (for example, the token issuing unit 10A) instructs the management system 10 to store the issued token in the user wallet 40. When the token issuing unit 10A issues a token, the management system 10 (for example, the token issuing unit 10A) may instruct the management system 10 to directly store the issued token in the user wallet 40. Alternatively, when the token issuing unit 10A issues a token, the management system 10 may instruct the management system 10 to temporarily store the token in the administrator wallet 20 and then move the stored token to the user wallet 40 for storage. In either case, the issued token is ultimately stored in the user wallet 40.

[0068] When the token issuing unit 10A provides a token to the user wallet 40 in response to a consumption signal transmitted from the user terminal 30 to the management system 10, the certificate issuing unit 10B of the management system 10 issues a consumption certificate to the user account based on the consumption signal. The consumption certificate includes information that certifies that the amount of carbon dioxide consumed specified by the consumption signal has been consumed. The consumption certificate includes the name or title of the user specified by the user account and the fact that the amount of carbon dioxide consumed has been consumed as information, and may also include information of a certifier (for example, the name or title of an administrator). The consumption certificate is preferably electronic data that includes symbols such as letters and numbers, images, etc. When the consumption certificate is electronic data, the user terminal 30 that can perform communication and transactions based on the user account can obtain the consumption certificate. When the consumption certificate is issued (given) to the user account, the user terminal 30 can hold or use the consumption certificate as electronic data, and may be formed by printing on a medium such as paper.

[0069] In this embodiment, the management system 10 hashes at least one of the consumption signal history and the token transaction history (preferably both) and records them in the above-mentioned blockchain. Therefore, the history of all consumption signals given to the management system 10 and all history of token transactions performed between multiple nodes 2 are hashed and recorded in the blockchain.

[0070] As shown in Figure 4, in the management system 10, when a sale request requesting the sale of tokens stored in the user wallet 40 is notified to the management system 10 from the user terminal 30, the management system 10 transfers the tokens from the user wallet 40 to the administrator wallet 20 based on the sale request.

[0071] When a purchase request for purchasing tokens is notified to the management system 10 from the emitter terminal 50 associated with the emitter account, the management system 10 transfers the tokens from the administrator wallet 20 to the emitter wallet 60 based on the purchase request. Note that the purchase request given to the management system 10 from the emitter terminal 50 may be a purchase request specifying only the amount of tokens, or may be a purchase request specifying the amount of tokens and the minimum expiration date.

[0072] As shown in FIG. 4, when the tokens are stored in the emitter wallet 60, the emitter terminal 50 notifies the management system 10 of an issuance request for issuing an emission right certificate, and then the management system 10 erases the tokens stored in the emitter wallet 60 based on the issuance request, and the certificate issuing unit 10B issues an emission right certificate to the emitter account. In this way, the emitter can use the tokens (e.g., purchased tokens) and can receive the emission right certificate as a certificate for the used tokens. The issuance request can request the token amount stored in the wallet as an upper limit, and can also be requested in a form in which only a part of the stored token amount is used. For example, when 10 tokens are stored in the emitter wallet 60, the emitter terminal 50 can receive any amount of emission right certificates by notifying an issuance request in the range of 1 to 10 tokens. The emission right certificate is a certificate that the tokens have been used. Specifically, the management system 10 erases the tokens required by the issuance request among the tokens stored (held) in the emitter wallet 60, and an emission right certificate including information specifying that the erased tokens have been used is granted to the emitter account. The emission right certificate includes, for example, the fact that the tokens required by the issuance request have been used as information, and may include the name or title of the emitter specified by the emitter account and information on the certifier (for example, the name or title of the administrator). The emission right certificate is preferably electronic data including symbols such as letters and numbers, images, and the like. When the emission right certificate is electronic data, the emitter terminal 50 capable of communication and transactions based on the emitter account can acquire the emission right certificate. When the emission right certificate is issued (granted) to the emitter account, the emitter terminal 50 can hold or use the emission right certificate as electronic data, and may be formed by printing on a medium such as paper. In this specification, the "predetermined amount of tokens" functions as an emission right for emitting an amount of carbon dioxide equivalent to the predetermined amount of tokens.And, "tokens stored (held) in the emitter wallet 60 are used" also means that emission rights are used for the amount of tokens used (deleted tokens). Therefore, the emission rights certificate may include information specifying the emission rights used (for example, information certifying the right (emission rights) to emit an amount of carbon dioxide equivalent to the amount of tokens used (deleted)).

[0073] 3.Examples of effects The support system 8 can provide incentives to users who contribute to carbon dioxide consumption (reduction) by granting tokens to the user's wallet. For example, if the tokens can be converted into cash, the emission credits can be converted into cash by selling the tokens.

[0074] The support system 8 can transfer tokens stored in the user wallet 40 to the administrator wallet 20 by a sale request, so that users can use tokens more freely. In other words, tokens can be converted into cash at any time.

[0075] When a sale request is received from the user terminal 30 and a purchase request is received from the depositor terminal 50, the support system 8 can transfer the tokens in the user wallet 40 to the administrator wallet 20 once and then to the depositor wallet 60. This support system can easily transfer the tokens in the user wallet to the depositor wallet even if the timing of the sale request and the purchase request differs. In other words, tokens can be converted into cash at any time, regardless of whether the sale request and the purchase request are matched.

[0076] The support system 8 can certify, by the emission right certificate, that the person (emitter) who operates the emitter terminal 50 has acquired emission rights from the user by using the token.

[0077] The support system 8 can issue a consumption certificate to a user account based on a consumption signal, so that the consumption certificate can be used as proof that the person corresponding to the user account (user) is contributing to carbon dioxide consumption.

[0078] The support system 8 can issue an amount of tokens that reflects the highly accurate consumption amount obtained based on the monitoring results of the consumption amount monitor 42 and corresponds to the actual consumption situation.

[0079] When the support system 8 issues a token based on a consumption signal, the support system 8 can operate the token by setting a deadline.

[0080] The support system 8 can manage at least one of the history of consumption signals and the history of token transactions using a blockchain, which can prevent tampering with the history and enable the system to be operated more stably.

[0081] <Other embodiments> The present disclosure is not limited to the embodiments described above and in the drawings. The features of the above-described or following embodiments can be combined in any combination without contradiction. In addition, any feature of the above-described or following embodiments can be omitted unless it is clearly stated as essential. Furthermore, the features of the above-described embodiments can be modified as follows.

[0082] In the first embodiment, the transaction as shown in FIG. 4 may be changed to that shown in FIG. 5. In the example of FIG. 5, when a purchase request for purchasing tokens is notified from the emitter terminal 50 to the management system 10 and a sale request for selling tokens held by the utilizer wallet 40 is notified from the utilizer terminal 30 to the management system 10, the management system 10 executes a transaction to transfer tokens from the utilizer wallet 40 to the emitter wallet 60 based on the purchase request and the sale request. The above transaction is an instruction to directly transfer tokens from the utilizer wallet 40 to the emitter wallet 60, and the utilizer terminal 30 that has received this transaction processes to directly transfer tokens from the utilizer wallet 40 to the emitter wallet 60. In this example, when there is a sale request from the utilizer terminal 30 and a purchase request from the emitter terminal 50, the support system 8 matches the sale request with the purchase request, thereby omitting temporary storage in the administrator wallet 20 and transferring tokens from the utilizer wallet 40 to the emitter wallet 60. Therefore, this support system 8 can further reduce the burden on the administrator wallet 20.

[0083] In the embodiment described above, the support system 8 is configured by the management system 10 and the administrator wallet 20, but either or both of the user terminal 30 and the depositor terminal 50 may be included in the support system 8. Alternatively, either or both of the user wallet 40 and the depositor wallet 60 may be included in the support system 8.

[0084] It should be noted that the embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the present invention is not limited to the embodiments disclosed herein, and is intended to include all modifications within the scope indicated by the claims or within the scope equivalent to the claims. [Explanation of symbols]

[0085] 8: Carbon dioxide emissions trading support system 10: Management Systems 10A: Token issuing department 10B: Certificate issuing department 20: Administrator Wallet 30: User terminal 40: User Wallet 42: Consumption Monitoring Department 44: Carbon Dioxide Consumption Department 50: Waste generator terminal 60: Emitter Wallet 100: Blockchain

Claims

1. A management system having a token issuing unit that issues tokens, An administrator wallet associated with the management system, Comprising, When a utilization user account and a utilization user wallet are associated and a consumption signal notifying the consumption amount of carbon dioxide is transmitted from the utilization user terminal associated with the utilization user account to the management system, the token issuing unit issues the token based on the consumption signal, and the management system gives an instruction to store the issued token in the utilization user wallet. When a sell request for the token stored in the utilization user wallet is notified from the utilization user terminal to the management system, the management system transfers the token from the utilization user wallet to the administrator wallet based on the sell request. A carbon dioxide emission rights trading support system.

2. When an emitter account and an emitter wallet are associated and a purchase request for the token is notified from the emitter terminal associated with the emitter account to the management system, the management system transfers the token from the administrator wallet to the emitter wallet based on the purchase request. The carbon dioxide emission rights trading support system according to Claim 1.

3. When an emitter account and an emitter wallet are associated and a purchase request for the token is notified from the emitter terminal associated with the emitter account to the management system and a sell request for the token held by the utilization user wallet is notified from the utilization user terminal to the management system, the management system transfers the token from the utilization user wallet to the emitter wallet based on the purchase request and the sell request. The carbon dioxide emission rights trading support system according to Claim 1.

4. The management system includes a certificate issuing unit, When the token is stored in the emitter wallet, after an issuance request for issuing an emission right certificate is notified from the emitter terminal to the management system, the management system deletes the token stored in the emitter wallet based on the issuance request, and the certificate issuing unit issues the emission right certificate to the emitter account. The carbon dioxide emission right trading support system according to claim 2 or claim 3.

5. The management system includes a certificate issuing unit. The certificate issuing unit issues a consumption certificate to the user account based on the consumption signal. The carbon dioxide emission right trading support system according to claim 1.

6. The user terminal generates and transmits the consumption signal based on the monitoring result by a consumption amount monitoring unit that monitors the carbon dioxide consumption amount of the user. The carbon dioxide emission right trading support system according to claim 1.

7. The token issuing unit issues the token with a defined expiration date. It has an invalidation unit that invalidates the token when the defined expiration date of the token has passed. The carbon dioxide emission right trading support system according to claim 1.

8. The management system hashes at least one of the history of the consumption signal and the history of the token transaction and records it on the blockchain. The carbon dioxide emission right trading support system according to any one of claims 1, 2, 3, 5, 6, and 7.

9. A management system having a token issuing unit that issues a token, An administrator wallet associated with the management system, is used. When a user account and a user wallet are associated and a consumption signal notifying the carbon dioxide consumption amount is transmitted from the user terminal associated with the user account to the management system, the token issuing unit issues the token based on the consumption signal, and the management system gives an instruction to store the issued token in the user wallet. When a sell request for selling the token stored in the user wallet is notified from the user terminal to the management system, the management system transfers the token from the user wallet to the administrator wallet based on the sell request. A method for supporting carbon dioxide emission right trading.

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