Traceability management server, traceability management method, and traceability management program

Abstract

To provide a traceability management server to manage the traceability of credit.SOLUTION: In a traceability management server 1, a data acquisition part 101 acquires overall credit data 200 and individual credit data 300, a traceability data generation part 102 generates traceability data, and a traceability data presentation part 103 presents the generated traceability data to credit applicants, farmers (groups and individuals) as a creation source, and consumers. The data acquisition part acquires purchaser data 500 and updates the traceability data based on the acquired purchasing data when at least the part of the overall credit corresponding to CO2e amount expressed in tons is purchased by a purchaser 15 (a part of consumers 14).SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a carbon credit traceability management server, a traceability management method, a traceability management program, and a non-transitory computer-readable recording medium. [Background technology]

[0002] Carbon credits have been gaining popularity in recent years. Under the carbon credit system, businesses (credit creators) create credits by implementing projects that reduce greenhouse gas emissions or increase absorption. Meanwhile, companies, local governments, and individuals (credit buyers) purchase the created credits and use them for carbon offsetting, complying with laws and regulations, and other purposes.

[0003] Carbon credits are a major economic tool for promoting incentives to shift from conventional methods that emit large amounts of greenhouse gases to methods that emit less. In order for carbon credits to be traded effectively, they must be highly reliable and have market value (Patent Document 1). In Japan, one example of a carbon credit with market value is the J-Credit Scheme, in which the government certifies credits.

[0004] Carbon credit systems such as J-Credit include "program-type projects" (https: / / www.meti.go.jp / policy / energy_environment / kankyou_keizai / japancredit / pdf / 220428_tyuusyoukigyou_r1.pdf). In program-type projects, small-scale reduction activities by farmers, individuals, small and medium-sized enterprises, etc. are compiled and registered as a single project. The program-type project manager collectively applies for registration, reports on monitoring, and applies for certification for the program-type project. In addition, systems such as the Joint Crediting Mechanism (JCM) promote methane reduction projects in paddy fields through project-type projects that bring together multiple fields. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 7460228 Summary of the Invention [Problem to be solved by the invention]

[0006] In each of the above projects, due to the nature of the application for multiple fields at once, those considering purchasing credits and credit purchasers are unable to know the source of the credits they are purchasing. Furthermore, the customers of the credit purchasers (companies) are unable to know the source of the credits they are purchasing. Furthermore, credit creators are unable to know the buyers of the credits they have created. In other words, traceability of credits by source is not possible.

[0007] In view of the above circumstances, an object of the present disclosure is to manage the traceability of credits. [Means for solving the problem]

[0008] A traceability management server according to an embodiment of the present disclosure includes: Total credit data including one or more first unit amount IDs each identifying one or more first unit amount credits obtained by dividing the total credit into first unit amounts; individual credit data in which one or more individual credits constituting the overall credit are linked to one or more creation source IDs that identify one or more creation sources that respectively created the one or more individual credits; a data acquisition unit for acquiring the data; a plurality of second unit amount IDs each identifying a plurality of second unit amount credits obtained by subdividing each first unit amount credit into second unit amounts smaller than the first unit amount are associated with each first unit amount ID each identifying each first unit amount credit; By linking a part of second unit amount IDs that identify a part of second unit amount credits whose total amount is equal to each individual credit with a creation source ID that identifies a creation source that created the individual credit, a traceability data generation unit that generates traceability data linking a set of the plurality of second unit amount IDs and the one or more creation source IDs to each of the one or more first unit amount IDs; It is equipped with: [Effects of the Invention]

[0009] According to the present disclosure, it is possible to manage the traceability of credits.

[0010] The effects described here are not necessarily limited to those described herein, and may be any of the effects described in this disclosure. [Brief explanation of the drawings]

[0011] [Figure 1] An outline of this embodiment will be given below. [Figure 2] 2 shows the functional configuration of a traceability management server according to the present embodiment. [Figure 3] 1 shows the operation flow of the traceability management server. [Figure 4] This shows the data managed by the traceability management server. [Figure 5] Shows tracking of disaggregated digital MRV data representing project participants' GHG reduction activities. [Figure 6] Shows tracking of GHG emission reductions attributable to individual project participants. [Figure 7] Demonstrate traceability to the source of carbon credits. [Figure 8] This shows a GUI screen that allows continuous drill-down into digital MRV data. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

[0013] 1. Functional configuration of the traceability management server

[0014] Fig. 1 shows an overview of this embodiment, and Fig. 2 shows the functional configuration of the traceability management server of this embodiment.

[0015] The traceability management server 1 operates as a data acquisition unit 101, a traceability data generation unit 102, and a traceability data presentation unit 103 by the computer of the traceability management server 1 executing a traceability management program.

[0016] In this embodiment, the extension of the "mid-drought period in rice cultivation" will be described as an example of a carbon credit project methodology. However, the methodology of the carbon credit project is not limited. Any methodology (https: / / japancredit.go.jp / about / methodology / ) in the fields of energy conservation, renewable energy, industrial processes, agriculture, waste, forestry, etc. can be applied.

[0017] The J-Credit Scheme is an example of a carbon credit scheme. Under the J-Credit Scheme, credits are granted to business owners (e.g., rice farmers) if the extension of the mid-drainage period in paddy rice cultivation meets certain conditions (https: / / japancredit.go.jp / pdf / methodology / AG-005_v1.0.pdf). Specifically, if the mid-drainage period in paddy rice cultivation is extended by seven days or more from the average number of days implemented over the past two or more years prior to the project in the project-implemented paddy fields, credit application can be approved. If credit application is approved, the value of the credit is calculated based on the difference between baseline emissions (emissions expected if the drainage period is not extended) and emissions after the project is implemented (emissions expected if the drainage period is extended).

[0018] 2. Traceability Management Server Operation Flow

[0019] FIG. 3 shows the operation flow of the traceability management server.

[0020] As a premise, a credit (hereinafter referred to as "total credit") is issued to a credit applicant 11 (project operation manager) by a credit issuer 12 (for example, the Credit Scheme Business Secretariat). In this specification, total credit refers to the total amount of credits issued for one project. The credit applicant 11 may be the same as or different from the operator of the traceability management server 1. In a project, small-scale reduction activities of farmers and others are compiled and registered as one project. When applying for credits for a project, the credit applicant 11 does not apply for the CO2e amounts (carbon dioxide equivalent) of multiple farms and multiple fields in various regions in a distinguishable manner, but applies to the credit issuer 12 for credits based on the total CO2e amount of all farms and all fields in various regions.

[0021] The data acquisition unit 101 of the traceability management server 1 acquires the total credit data 200 and the individual credit data 300 (steps S1 and S2).

[0022] FIG. 4 shows the data managed by the traceability management server.

[0023] The total credit data 200 indicates the total amount of total credits 203 applied for by a credit applicant 11 for one project and issued by a credit issuer 12. The credit applicant 11 is identified by an applicant ID 201. One project is identified by a project ID 202. That is, the total credit data 200 is data for each combination of applicant ID 201 and project ID 202. The total credit 203 is an amount of CO2e expressed in tons. The total credit 203 is subdivided into first unit amounts. The first unit amount is a reference amount expressed in units (tons) of the total credit 203, that is, the first unit amount = 1 ton. A first unit amount of credit, that is, 1 ton of CO2e, is referred to as a "first unit amount credit." The total credit data 200 includes one or more (typically multiple) first unit amount IDs 204. The one or more first unit amount IDs 204 identify one or more first unit amount credits (one ton of CO2e), respectively. For example, if the total credit 203 is three tons, the total credit data 200 indicates a set of the first ton first unit amount credit (identified by the first unit amount ID 204A), the second ton first unit amount credit (identified by the first unit amount ID 204B), and the third ton first unit amount credit (identified by the first unit amount ID 204C).

[0024] The individual credit data 300 corresponds to one total credit data 200 and is data for each combination of an applicant ID 201 and a project ID 202. The individual credit data 300 links an individual credit 301, a creation source ID 302, and an activity 303. The individual credits 301 are one or more (typically multiple) individual credits 301 that make up the total credit 203, and are credits created in multiple sub-projects that make up one project. For example, if the total credit 203 is 3 tons, the individual credit data 300 includes an individual credit 301A of 1.8 tons and an individual credit 301B of 1.2 tons. The one or more creation source IDs 302 identify one or more creation sources 13 that respectively created the one or more individual credits 301. For example, the creation source 13 may be a field, a local government, a farmer (organization or individual), etc. If the creation source 13 is a field, the creation source ID 302 may be a land address. The activity 303 indicates a specific activity carried out to generate one or more individual credits 301 from each of one or more sources 13, and indicates, for example, an activity to extend the dry season. The dry season may be determined for each field using satellite data.

[0025] In this example, in the individual credit data 300, a creation source ID 302A that identifies the creation source 13A, an individual credit 301A (1.8 tons) created by the creation source 13A, and an activity 303A performed by the creation source 13A are linked together. A creation source ID 302B that identifies the creation source 13B, an individual credit 301B (1.2 tons) created by the creation source 13B, and an activity 303B performed by the creation source 13B are linked together.

[0026] If the credit applicant 11 is different from the operator of the traceability management server 1, the traceability management server 1 only needs to acquire the overall credit data 200 and the individual credit data 300 from the credit applicant 11. On the other hand, if the credit applicant 11 is the same as the operator of the traceability management server 1, the traceability management server 1 only needs to acquire the individual credit data 300 from the credit applicant 11 and the overall credit data 200 issued by the credit issuer 12.

[0027] The traceability data generation unit 102 of the traceability management server 1 generates traceability data 400 and records it on a non-transitory computer-readable recording medium (step S3). The traceability data 400 corresponds to one piece of total credit data 200, and is data for each combination of applicant ID 201 and project ID 202. The traceability data 400 associates the corresponding total credit data 200 and individual credit data 300, and is further data obtained by subdividing the individual credit data 300.

[0028] The traceability data generation unit 102 associates a plurality of second unit amount IDs 401, each identifying a plurality of second unit amount credits obtained by subdividing each first unit amount credit (1 ton of CO2e), with each first unit amount ID 204. Each first unit amount ID 204 identifies a respective first unit amount credit (1 ton of CO2e). The second unit amount is smaller than the first unit amount (1 ton). The second unit amount is, for example, 1 kg or less (1 kg, 1 g), and in this example, the second unit amount = 1 kg. The second unit amount credit is a credit of the second unit amount, i.e., 1 kg of CO2e. One first unit amount credit (identified by the first unit amount ID 204A) is a set of 1,000 second unit amount credits (1 kg of CO2e). The 1000 second unit amount credits are each identified by 1000 second unit amount IDs 401. Specifically, when the total credit 203 is 3 tons, the first ton first unit amount credit (identified by the first unit amount ID 204A) is linked to 1000 second unit amount IDs 401A1 to 401An. The second ton first unit amount credit (identified by the first unit amount ID 204B) is linked to 1000 second unit amount IDs 401B1 to 401Bn. The third ton first unit amount credit (identified by the first unit amount ID 204C) is linked to 1000 second unit amount IDs 401C1 to 401Cn. Therefore, if the total credit 203 is 3 tons, the traceability data 400 includes 3000 second unit amount IDs 401 .

[0029] The traceability data generation unit 102 links all second unit amount IDs 401 with one or more source IDs 302 that identify the source 13 that created one or more individual credits 301. The traceability data generation unit 102 further links each source ID 302 with an activity 303 performed at the source 13 identified by the source ID 302. In this example, the total credits 203 of 3 tons include 1.8 tons of individual credits 301A and 1.2 tons of individual credits 301B. In this case, of the 3,000 second unit amount IDs 401, 1,800 second unit amount IDs 401 are linked with a source ID 302A that identifies the source 13A that created the individual credit 301A (1.8 tons) and an activity 303A performed at the source 13A. The 1,200 second unit amount IDs 401 are linked to a creation source ID 302B that identifies the creation source 13B that created the individual credit 301B (1.2 tons) and an activity 303B that was performed at the creation source 13B. In this way, the traceability data generation unit 102 links some of the second unit amount IDs 401 that respectively identify some of the second unit amount credits whose total amount is equal to each individual credit 301 with the creation source ID 302 that identifies the creation source 13 that created the individual credit 301 and the activity 303 that was performed at the creation source 13.

[0030] In this way, the traceability data generation unit 102 links a set of multiple second unit quantity IDs 401 and one or more creation source IDs 302 to each of one or more first unit quantity IDs 204, and further generates traceability data 400 in which each creation source ID 302 is linked to an activity 303 performed at the creation source 13 identified by the creation source ID 302.

[0031] The traceability data presentation unit 103 of the traceability management server 1 presents the information indicated by the traceability data 400 to the credit applicant 11, the farmer (organization or individual) who is the source 13, and the consumer 14 in a viewable manner on the web browser or application of each of their electronic devices (personal computer, tablet computer, smartphone, etc.) (step S4). The traceability data presentation unit 103 may present, as the "information indicated by the traceability data 400," information on the source 13 identified by the source ID 302 in the traceability data 400 (e.g., Prefecture A, City B of A Prefecture, Town C of B City, A Prefecture, Association D in Town C of B City, A Prefecture, Farmer E in Town C of B City, A Prefecture, Field F in Town C of B City, A Prefecture, etc.). The consumer 14 is a viewer who is considering purchasing at least a portion of the total credit 203. When the creation source 13 is a farm field, the traceability data presentation unit 103 may present polygons representing each of the multiple farm fields and the mid-irrigation period extension activities carried out in each of the multiple farm fields so that they can be viewed on a map image 16 showing the multiple farm fields. On the map image 16, the polygons are displayed superimposed on the farm fields.

[0032] This allows the credit applicant 11 and the farmers who are the source 13 to view the traceability of the total credits 203 that they have created in 1 kg units. Also, the consumers 14 can actively select which credits from the source 13 they want to purchase from the total credits 203, and which credits have been created by which activity 303 they want to purchase. Also, by informing the consumers 14 of the source 13 and the activity 303, it becomes an incentive for the credit applicant 11 and the farmers who are the source 13 to create credits with higher added value in the future.

[0033] After at least a portion of the total credits 203 is purchased by a purchaser 15 (a part of the consumers 14), the data acquisition unit 101 of the traceability management server 1 acquires purchaser data 500 (step S5). The purchaser data 500 links at least a purchaser ID 501 that identifies the purchaser 15 who purchased at least a part of the total credits 203 with the purchased credits 502 of the purchaser 15. The purchased credits 502 are an amount of CO2e. The purchased credits 502 are typically expressed in tons, but may also be expressed in units smaller than a ton (such as kg). When the purchaser 15 specifies a source ID 302 for purchase, the purchaser data 500 further includes the source ID 302 of the purchased credits.

[0034] The traceability data generation unit 102 of the traceability management server 1 generates (updates) traceability data 400 based on the purchaser data 500 and records the data in a non-transitory computer-readable recording medium (step S6). The traceability data generation unit 102 generates (updates) the traceability data 400 by further linking some second unit amount IDs 401, each identifying a portion of second unit amount credits whose total amount is equal to the purchased credits 502, with a purchaser ID 501, identifying the purchaser 15 who purchased the purchased credits 502. For example, assume that the purchaser 15 identified by the purchaser ID 501 purchased 2 tons of purchased credits 502 out of the total credits 203 of 3 tons. In this case, the traceability data generation unit 102 links the purchaser ID 501 to 2000 second unit amount IDs 401 out of the 3000 second unit amount IDs 401 included in the traceability data 400. When the purchaser 15 designates the creation source ID 302 and makes a purchase, the traceability data generation unit 102 links the purchaser ID 501 to the second unit amount ID 401 linked to this creation source ID 302. Note that the purchaser ID 501 is not linked to the second unit amount IDs 401 of credits that have not been purchased (in the example of FIG. 4, second unit amount IDs 401C1 to 401Cn).

[0035] The traceability data presentation unit 103 of the traceability management server 1 presents the information indicated by the traceability data 400 updated based on the purchaser data 500 so that it can be viewed by the credit applicant 11, the farmer (organization or individual) who is the creation source 13, the consumer 14, and the purchaser 15 (step S7). That is, the traceability data presentation unit 103 presents information indicating one or more creation sources 13 identified by one or more creation source IDs 302 linked to a purchaser ID 501 that identifies each purchaser 15, and the activities 303 performed at the one or more creation sources so that it can be viewed.

[0036] This allows the credit applicants 11 and farmers who are the sources 13 to see the purchasers 15 of the total credits 203 they have created in 1 kg increments. The purchasers 15 can proactively disclose which source 13 created the credits they purchased, and by what activity 303 they purchased the credits. Also, viewers can proactively find out which purchasers 15 purchased the credits created by which source 13, and by what activity 303 they purchased the credits. Furthermore, because the purchasers 15 can specifically disclose their own purchase history, this provides an incentive for the credit applicants 11 and farmers who are the sources 13 to create credits with higher added value in the future.

[0037] As described above, according to this embodiment, even though a bulk application is made for multiple fields, potential credit purchasers and credit purchasers can know the source of the credits they purchase. Furthermore, customers of the credit purchaser (company) can know the source of the credits they purchase. Furthermore, credit creators can know the buyers of the credits they have created. In other words, traceability of credits by source is achieved.

[0038] 3. Concept of this embodiment

[0039] The concept of this embodiment, a system for traceability of nature-based carbon credits, will be described.

[0040] By way of background, CO2 offsets (carbon credits) are almost always measured in metric tons (tCO2 or tonnes of CO2 equivalent), and while carbon credits are naturally linked to source projects that are tied to geographic areas, there is currently no way to link a given ton to its exact geographic source.

[0041] To illustrate this, take the example of one particular tonne of CO2e from a sustainable agriculture project. Currently, there is no way to know which of the thousands of farmers saved that particular ton of GHGs. In fact, every tCO2e created from a given project during a given timeframe is indistinguishable from every other tCO2e created from the same project and timeframe.

[0042] The reason is that traditionally, MRV (measurement, reporting, and verification activities that support the calculation of reduced GHGs) is generally performed manually using statistical samples. For nature-based projects, the project boundary can be tens of thousands of hectares or more. Due to their large scale and practicality, emission reductions are estimated over large areas.

[0043] However, with the advent of highly scalable digital MRV leveraging technologies such as satellite remote sensing, drones, and IoT sensors, it is now possible to collect much more disaggregated data. For example, satellite remote sensing can be used to monitor the GHG reduction activities of all smallholder farmers participating in a sustainable agriculture project. This makes it possible to calculate much more disaggregated GHG emission reductions, for example, estimating the GHG emission reductions per kg corresponding to individual agricultural fields.

[0044] Conversely, given a certain ton of CO2e generated by an agricultural project, it may be possible to trace that specific ton back to the actual source farmland where the GHG reduction activities took place. Below we describe and demonstrate a traceability system that makes this possible.

[0045] As shown in Figure 5, disaggregated digital MRV data representing the GHG reduction activities of project participants is tracked. The digital MRV data is linked to ground polygons representing agricultural land, processed, and stored in a satellite image database 601. An earth observation satellite acquires image data and writes it to the satellite image database 601. Polygons (areas of interest) representing multiple agricultural land 602 are extracted from the image data. The data is processed, and the processing results are linked to each individual agricultural land and written to a digital MRV database 603.

[0046] As shown in Figure 6, GHG emission reductions (in kilograms or less) attributable to each project participant are tracked. By collecting disaggregated digital data, GHG emission reductions for each individual farmland can be calculated. A digital MRV database 603 stores GHG reduction activities for each farmland 602. An emission model 604 estimates GHG emission reductions 605 for each farmland 602 based on the tracked activity in the digital MRV database 603. The emission model 604 outputs GHG emission reductions 605 for each farmland 602.

[0047] As shown in Figure 7, the issued carbon credits 606 can be traced back to their source using a unique serial number or a number assigned at the time of purchase. The emission reductions 605 of the individually tracked carbon credits can be traced back to the individual farmland 602 that is their source.

[0048] As shown in Figure 8, a GUI screen is provided that allows continuous drill-down from uniquely numbered individual carbon credits (or collections thereof) to digital MRV data for individual or groups of project participants. Specifically, the system is accessed from a link in the carbon credit purchase certificate 607. The online system displays carbon credit purchase information. From a link in the credit purchase data screen 608, a farmland list 609 is displayed on the GUI screen. The farmland list 609 is a list of farmland that is the source of carbon credits. From the link in the farmland list 609, detailed GHG reduction information, for example, detailed information 610 for individual farms or farmland, is displayed on the GUI screen. From the link in the detailed information 610, detailed digital MRV data 611 for the farmland (for example, showing the farmer's activities) is displayed on the GUI screen.

[0049] This embodiment can also be applied to program-based projects under the J-Credit Scheme and other programs, as well as project-based projects that bring together multiple fields under the JCM scheme and other programs. This embodiment restores natural capital through reliable and economically rational climate change solutions that combine the power of IT and finance, contributing to improving the client's corporate value while also considering biodiversity. This embodiment contributes to the achievement of SDG Goal 7, "Affordable and clean energy," and Goal 13, "Climate action." While the embodiments and variations of the present technology have been described above, the present technology is not limited to the above-described embodiments, and various modifications can of course be made without departing from the spirit of the present technology. [Explanation of symbols]

[0050] 1 Traceability Management Server 101 Data Acquisition Unit 102 Traceability Data Generation Unit 103 Traceability Data Presentation Section 200 Overall Credit Data 300 Individual Credit Data 400 Traceability Data 500 Buyer Data

Claims

1. total credit data including one or more first unit amount IDs each identifying one or more first unit amount credits obtained by dividing the total credit into first unit amounts; individual credit data in which one or more individual credits constituting the total credits are linked to one or more creation source IDs that identify one or more creation sources that respectively created the one or more individual credits; a data acquisition unit for acquiring the data; a plurality of second unit amount IDs each identifying a plurality of second unit amount credits obtained by subdividing each first unit amount credit into second unit amounts smaller than the first unit amount are associated with each first unit amount ID each identifying each first unit amount credit; By linking a part of second unit amount IDs that identify a part of second unit amount credits whose total amount is equal to each individual credit with a creation source ID that identifies a creation source that created the individual credit, a traceability data generation unit that generates traceability data linking a set of the plurality of second unit amount IDs and the one or more creation source IDs to each of the one or more first unit amount IDs; A traceability management server comprising:

2. The traceability management server according to claim 1, the data acquisition unit acquires purchaser data in which a purchaser ID identifying a purchaser who has purchased at least a portion of the total credit is linked to the purchase credit of the purchaser; The traceability data generation unit generates the traceability data by further linking a purchaser ID that identifies a purchaser who purchased the purchase credit to a portion of second unit amount IDs that identify each of the second unit amount credits that are equal in total amount to the purchase credit. Traceability management server.

3. The traceability management server according to claim 1, In the individual credit data, an activity performed to create the one or more individual credits in each of the one or more creation sources is associated with a creation source ID that identifies the creation source; The traceability data generation unit generates the traceability data in which each creation source ID is further linked to an activity performed at the creation source identified by the creation source ID. Traceability management server.

4. The traceability management server according to any one of claims 1 to 3, a traceability data presentation unit that presents information indicated by the traceability data in a viewable manner to a consumer who is considering purchasing at least a portion of the total credits; A traceability management server further comprising:

5. The traceability management server according to claim 4, The traceability data presentation unit presents, in a viewable manner, information indicating one or more creation sources identified by one or more creation source IDs linked to a purchaser ID that identifies each purchaser, and activities performed at the one or more creation sources. Traceability management server.

6. The traceability management server according to claim 5, the one or more sources are a plurality of fields; The activity is a mid-season extension activity, The traceability data presentation unit presents polygons representing the plurality of farm fields and the mid-irrigation period extension activities carried out in the plurality of farm fields in a viewable manner on a map image representing the plurality of farm fields. Traceability management server.

7. The traceability management server according to claim 1, The total credit is expressed in CO2e (tonnes), the first unit amount is 1 ton; The second unit amount is 1 kg or less. Traceability management server.

8. The traceability management server computer total credit data including one or more first unit amount IDs each identifying one or more first unit amount credits obtained by dividing the total credit into first unit amounts; individual credit data in which one or more individual credits constituting the total credits are linked to one or more creation source IDs that identify one or more creation sources that respectively created the one or more individual credits; Get a plurality of second unit amount IDs each identifying a plurality of second unit amount credits obtained by subdividing each first unit amount credit into second unit amounts smaller than the first unit amount are associated with each first unit amount ID each identifying each first unit amount credit; By linking a part of second unit amount IDs that identify a part of second unit amount credits whose total amount is equal to each individual credit with a creation source ID that identifies a creation source that created the individual credit, Generate traceability data linking a set of the plurality of second unit amount IDs and the one or more creation source IDs to each of the one or more first unit amount IDs. Traceability management method.

9. The traceability management server computer, total credit data including one or more first unit amount IDs each identifying one or more first unit amount credits obtained by dividing the total credit into first unit amounts; individual credit data in which one or more individual credits constituting the total credits are linked to one or more creation source IDs that identify one or more creation sources that respectively created the one or more individual credits; a data acquisition unit for acquiring the data; a plurality of second unit amount IDs each identifying a plurality of second unit amount credits obtained by subdividing each first unit amount credit into second unit amounts smaller than the first unit amount are associated with each first unit amount ID each identifying each first unit amount credit; By linking a part of second unit amount IDs that identify a part of second unit amount credits whose total amount is equal to each individual credit with a creation source ID that identifies a creation source that created the individual credit, a traceability data generation unit that generates traceability data linking a set of the plurality of second unit amount IDs and the one or more creation source IDs to each of the one or more first unit amount IDs; A traceability management program that operates as a

10. The traceability management server computer executes the traceability management program, total credit data including one or more first unit amount IDs each identifying one or more first unit amount credits obtained by dividing the total credit into first unit amounts; individual credit data in which one or more individual credits constituting the total credits are linked to one or more creation source IDs that identify one or more creation sources that respectively created the one or more individual credits; Using a plurality of second unit amount IDs each identifying a plurality of second unit amount credits obtained by subdividing each first unit amount credit into second unit amounts smaller than the first unit amount are associated with each first unit amount ID each identifying each first unit amount credit; generated by linking a part of second unit amount IDs, each of which identifies a part of second unit amount credits having a total amount equal to each individual credit, with a creation source ID, which identifies a creation source that created the individual credits; A set of the plurality of second unit amount IDs and the one or more creation source IDs is associated with each of the one or more first unit amount IDs. Traceability Data A non-transitory computer-readable recording medium having the above-mentioned information recorded thereon.

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