Carbon dioxide emission trading support system and carbon dioxide emission trading 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 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 sending buy and sell 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 a receiving means for receiving buy and sell orders for carbon dioxide emission rights from the trading terminals, a matching means for identifying orders that match the trading conditions, and the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-149978 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. In 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 technology 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 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 issued token to be stored in the user wallet.

[0007] A carbon dioxide emission trading support method according to one aspect of the present invention includes: a management system having a token issuing unit that issues tokens; an administrator wallet associated with the management system; Using When a user account is associated with a user wallet and a consumption signal notifying the amount of carbon dioxide consumption is sent 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 issued token to be stored in the user wallet. [Effects of the Invention]

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

[0009] [Figure 1] FIG. 1 is an explanatory diagram that shows in outline a trading system to which a carbon dioxide emission trading support system according to a first embodiment is applied. [Figure 2]FIG. 2 is an explanatory diagram illustrating the trading system of FIG. 1 from a different perspective than that of FIG. [Figure 3] Figure 3(A) is an explanatory diagram showing a simplified correspondence between administrator accounts and administrator wallets stored in the blockchain. Figure 3(B) is an explanatory diagram showing a simplified correspondence between each user account and each user wallet stored in the blockchain. Figure 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, depositor terminal, and each wallet in the transaction system of Figure 1. [Figure 5] FIG. 5 is an explanatory diagram for explaining data exchange using a method different from that shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

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

[20] .

[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 is associated with a user wallet and a consumption signal notifying the 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 for selling 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. [1] A carbon dioxide emissions trading support system according to the present invention.

[0014] The support system described in [2] above 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 and a purchase request for the token is notified to the management system from the emitter terminal associated with the emitter account, the management system transfers the token from the administrator wallet to the emitter wallet based on the purchase request. [2] A carbon dioxide emissions trading support system according to the present invention.

[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 allows tokens from the user wallet to be transferred 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 timing of the sell request and the buy request differs.

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

[0018] In the support system described in [4] above, when a sell request is received from a user terminal and a buy request is received from a emitter terminal, the management system executes a transaction to transfer tokens from the user wallet to the emitter wallet based on the request. This eliminates the need for temporary storage in the administrator wallet and allows the tokens to be transferred 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. [3] or [4], the carbon dioxide emissions trading support system.

[0020] The support system [5] above can use the certificate for emission rights 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 in [6] above can issue a consumption certificate to a user account based on the 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.

[0023] [7] The user terminal generates and transmits the consumption signal based on the monitoring results of 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 passed; [1] to [7]. 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 manage the tokens with a set deadline.

[0027] [9] The management system hashes and records at least one of the consumption signal history and the token transaction history 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 manage at least one of the consumption signal history and token transaction history using a blockchain, which can prevent tampering with the history and enable more stable operation of the system.

[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 is associated with a user wallet and a consumption signal notifying the 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 for supporting 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.

[10] A carbon dioxide emissions trading support method according to

[10] .

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

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

[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 the 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.

[11] A carbon dioxide emissions trading support method according to

[11] .

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

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

[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.

[10] or

[11] , a carbon dioxide emissions trading support method.

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

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

[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.

[12] or

[13] .

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

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

[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.

[10] to

[14] . A carbon dioxide emission trading support method according to any one of

[10] to

[14] .

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

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

[0041]

[16] The user terminal generates and transmits the consumption signal based on the monitoring results of a consumption monitoring unit that monitors the user's carbon dioxide consumption. [9] to

[15] . A carbon dioxide emission trading support method according to any one of [9] to

[15] .

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

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

[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 passed;

[10] to

[16] . A carbon dioxide emission trading support method according to any one of

[10] to

[16] .

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

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

[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.

[10] to

[17] . A carbon dioxide emission trading support method according to any one of

[10] to

[17] .

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

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

[0047]

[19] A carbon dioxide emission 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 the amount of carbon dioxide consumption is transmitted from a user terminal associated with the user account to the management system, the token issuing unit is caused to perform a process of issuing the token based on the consumption signal, and the management system is caused to issue an instruction to store the issued token in the user wallet. A program used in carbon dioxide emissions trading support systems.

[0048] The program described above in

[20] has the same effect as the carbon dioxide emissions trading support system described above in [1].

[0049]

[20] A carbon dioxide emission 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 emissions 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; causing a user terminal associated with the user account to perform a process of generating the consumption signal and transmitting it to the management system; A program used in carbon dioxide emissions trading support systems.

[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 the representative example 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 from 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 implements a blockchain. The blockchain implemented 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 below is executed, a transaction indicating the transaction details 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 constructed from the approved transactions using the calculated hash value. The constructed block is added to the blockchain and stored in a distributed manner in each node 2. On the other hand, when the trading system 1 is realized as a public blockchain, when each transaction described below is executed, a transaction indicating the transaction details is generated, and the generated transaction is verified and approved by node 2. Then, a miner calculates a hash value, and a block is constructed from the approved transactions using the calculated hash value. The constructed block is added to the blockchain and stored in a distributed manner in each node 2.

[0054] Each node 2 constituting the trading system 1 is configured by, for example, an information processing device such as a server or a personal computer. Although six nodes 2 are illustrated in Fig. 1, the number of nodes 2 may be more or less than that shown 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 memory unit 13, an input unit 14, an output unit 15, etc. The memory unit 13 is a device that stores programs, parameters, etc. The control unit 11 executes various functions and processes of the node 2 in accordance with various data such as programs and parameters stored in the memory 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 by multiple devices.

[0056] Some of the multiple nodes 2 constitute a user terminal 30. The user terminal 30 includes a control unit 31, a communication unit 32, a memory unit 33, an input unit 34, and an output unit 35. 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 includes 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 the specific configurations of the nodes 2 other than the management system 10, the user terminal 30, and the discharger terminal 50, but any of the nodes 2 whose specific configurations are omitted may be configured as the user terminal 30 or as the discharger terminal 50. The user terminal 30 shown in FIG. 1 may have the functions of the discharger terminal 50. The discharger terminal 50 may have the functions 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 the 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 certificates for emission rights 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 station 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 known methanation devices, 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; for example, if the carbon dioxide consumption unit 44 is the methanation device described above, 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 the 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 to each user, and a user wallet 40 is associated with each user account. For example, as shown in FIG. 3(B), each user account is associated with each user wallet 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 location for storing tokens held by a user, and is a virtual storage location associated with a user account. In the blockchain 100, for example, if a user account A1 is identified, the contents of the user wallet A2 associated with the user account A1 are identified. A user terminal 30 is a terminal used when performing communications and transactions based on the user account, and is a terminal associated with the user account. The user terminal 30 may include the 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 a 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. A emitter account is an account associated with a emitter wallet and is identification information that identifies the emitter. A emitter is an entity that purchases tokens. Note that a user may also be a emitter, and a emitter may also be a user. A emitter wallet is a virtual location for storing tokens held by an emitter, and is a virtual storage location associated with the emitter account. In the blockchain 100, for example, if a emitter account P1 is identified, the contents of the emitter wallet P2 associated with the emitter account P1 are identified. A emitter terminal 50 (FIG. 1, etc.) associated with a emitter account is a terminal used when performing communications and transactions based on the emitter account.

[0064] 2. Operation of the 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 by the carbon dioxide consumption unit 44 and provides the amount to the user terminal 30. When the user terminal 30 obtains the amount of carbon dioxide consumed 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 Figure 4.

[0065] As shown in FIG. 4, when a consumption signal (a signal notifying the user of the user's carbon dioxide consumption amount) is transmitted from the user terminal 30 associated with the 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 has a predetermined carbon dioxide consumption amount per token, and converts the consumption amount specified by the consumption signal transmitted by the user terminal 30 into tokens based on this information. The carbon dioxide consumption amount per token is, for example, 1 ton. In this example, if the carbon dioxide consumption amount specified by the consumption signal is 10 ton, 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 in some other way.

[0067] When the token issuer 10A issues a token, the management system 10 (for example, the token issuer 10A) instructs the management system 10 to store the issued token in the user wallet 40. When the token issuer 10A issues a token, the management system 10 (for example, the token issuer 10A) may instruct the management system 10 to store the issued token directly in the user wallet 40. Alternatively, when the token issuer 10A issues a token, the management system 10 may instruct the management system 10 to store the token temporarily 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 certifying 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, and may also include information about the certifier (e.g., the name or title of the administrator). The consumption certificate is preferably electronic data including symbols such as letters and numbers, and images. When the consumption certificate is electronic data, the user terminal 30, which can perform communications and transactions based on the user account, can acquire the consumption certificate. When the consumption certificate is issued (granted) to the user account, the user terminal 30 can retain or use the consumption certificate as electronic data, and it may be formed by printing it 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 the hashed history 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] Then, 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 a minimum expiration date.

[0072] As shown in FIG. 4, when tokens are stored in the emitter wallet 60, after the emitter terminal 50 notifies the management system 10 of an issuance request for the issuance of an emission right certificate, 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 manner, the emitter can use tokens (e.g., purchased tokens) and receive an emission right certificate as a certificate for the used tokens. Note that the issuance request can request up to the amount of tokens stored in the wallet, or can request the use of only a portion of the stored tokens. For example, if 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 for a range of 1 to 10 tokens. The emission right certificate is a certificate that the tokens have been used. Specifically, the management system 10 deletes the tokens stored (held) in the emitter wallet 60 in the amount requested by the issuance request, and grants an emission right certificate to the emitter account, the emission right certificate including information identifying that the deleted tokens have been used. The emission right certificate includes, for example, information indicating that the amount of tokens requested by the issuance request has been used, and may also include the name of the emitter identified by the emitter account and information on the certifier (e.g., the name of the administrator). The emission right certificate is preferably electronic data including symbols such as letters and numbers, and images. When the emission right certificate is electronic data, the emitter terminal 50, which can communicate and trade 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 retain or use the emission right certificate as electronic data, and the certificate may be printed on a medium such as paper. In this specification, a "predetermined amount of tokens" functions as an emission right for emitting an amount of carbon dioxide equivalent to the predetermined amount of tokens.Furthermore, "using tokens stored (held) in the emitter wallet 60" also means that emission credits are used in the amount of tokens used (deleted tokens). Therefore, the emission credit certificate may include information specifying the emission credits to be used (for example, information certifying the right (emission credits) to emit an amount of carbon dioxide equivalent to the amount of tokens used (deleted)).

[0073] 3.Example 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, 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 upon a sale request, making it easier for users to use tokens more freely. In other words, tokens can be converted into cash at any time.

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

[0076] The support system 8 can certify, by the certificate for emission rights, 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 tokens in an amount that reflects the highly accurate consumption amount obtained based on the monitoring results of the consumption amount monitoring unit 42 and corresponds to the actual consumption situation.

[0079] When issuing tokens based on consumption signals, the support system 8 can set a deadline for managing the tokens.

[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 operate 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. Furthermore, any feature of the above-described or following embodiments can be omitted unless explicitly stated as essential. Furthermore, the features of the above-described embodiments may be modified as follows:

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

[0083] In the above-described embodiment, 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 also be included in the support system 8. Alternatively, either or both of the user wallet 40 and the depositor wallet 60 may also be included in the support system 8.

[0084] It should be noted that the embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. 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 System 10A: Token issuing department 10B: Certificate Issuance Department 20: Administrator Wallet 30: User terminal 40: User Wallet 42: Consumption Monitoring Department 44: Carbon Dioxide Consumption Department 50: Waste generator terminal 60: Distributor Wallet 100: Blockchain

Claims

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 the amount of carbon dioxide consumed 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, When a sale request for selling 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; When a payer account and a payer wallet are associated with each other and a purchase request for purchasing the tokens is notified to the management system from a payer terminal associated with the payer account, the management system transfers the tokens from the administrator wallet to the payer wallet based on the purchase request. Carbon dioxide emissions trading support system.

2. 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. The carbon dioxide emission trading support system according to claim 1.

3. 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.

3. The carbon dioxide emission trading support system according to claim 1 or 2.

4. 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 trading support system according to claim 1.

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

6. 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 passed; The carbon dioxide emission trading support system according to claim 1.

7. 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.

7. A carbon dioxide emission trading support system according to claim 1, 2, 4, 5, or 6.

8. 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 the amount of carbon dioxide consumed 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, When a sale request for selling 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; When a payer account and a payer wallet are associated with each other and a purchase request for purchasing the tokens is notified to the management system from a payer terminal associated with the payer account, the management system transfers the tokens from the administrator wallet to the payer wallet based on the purchase request. A method for supporting carbon dioxide emissions trading.

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