JP7085094B2 - System and management equipment - Google Patents

Description

The present invention relates to a management device, a virtual currency system, and a system.

All transaction history data from the past to the present is shared among multiple user devices, and new transaction history is added to the already shared transaction history data so that it is difficult to tamper with these shared transaction history data. A virtual currency system that adds a special hash value generated by a process called mining to data is known (see Non-Patent Document 1).

Free encyclopedia "Wikipedia", blockchain, [Search on December 3, 2017], Internet <URL: https: // ja. wikipedia. org / wiki / blockchain>

However, in the above-mentioned conventional virtual currency system, the amount of calculation of a special hash value by mining becomes excessive, and there is a possibility that the entire system cannot be operated smoothly.

The above problem can be solved by, for example, the following means.

A management device that is connected to multiple user devices via a network, and associates the issue information storage area that stores the virtual currency ID of the issued virtual currency with the account information with one or more virtual currency IDs. A management device having an account information storage area to be stored and a history information storage area to store virtual currency history information in association with a virtual currency ID.

It is a management device connected to a plurality of user devices via a network, and includes an issuance information storage area for storing a virtual currency ID of a issued virtual currency and an asset information storage area for storing an asset balance. When a virtual currency issuance request for specifying account information is received from a user device, it is determined whether or not the issuance condition including the receipt of consideration for virtual currency is satisfied, and when the issuance condition is satisfied, the issuance information storage area is stored. When a sell order that stores a new virtual currency ID and specifies account information is received from one of the user devices, the success or failure of the buy intervention condition including the condition that the target price is equal to or less than the predetermined buy intervention set price is determined. A management device that determines and subtracts the consideration for establishing the buying intervention from the asset balance stored in the asset information storage area when the buying intervention condition is satisfied.

According to one embodiment of the present invention, the management device can detect fraud related to the virtual currency by using the virtual currency ID without spending a huge amount of calculation. Therefore, it is possible to provide a management device and a virtual currency system that can smoothly operate the entire system.

It is a schematic diagram which shows the structural example of the virtual currency system which concerns on Embodiment 1. It is a schematic diagram which shows the structural example of the management apparatus which concerns on Embodiment 1. FIG. It is a schematic diagram which shows an example of the issue information storage area. It is a schematic diagram which shows an example of the account information storage area. It is a schematic diagram which shows an example of the history information storage area. It is a schematic diagram which shows an example of the asset information storage area. It is a schematic diagram which shows an example of the history information storage area. It is a sequence diagram explaining the operation example (issuance of virtual currency) of the management apparatus which concerns on Embodiment 1. It is a sequence diagram explaining the operation example (sales brokerage of virtual currency) of the management apparatus which concerns on Embodiment 1. It is a sequence diagram explaining the operation example (buying intervention of virtual currency) of the management apparatus which concerns on Embodiment 1. It is a sequence diagram explaining the operation example (sell intervention of virtual currency) of the management apparatus which concerns on Embodiment 1. It is a sequence explaining the operation example of the virtual currency system which concerns on Embodiment 2. It is a sequence explaining the operation example of the virtual currency system which concerns on Embodiment 3.

[Virtual currency system 1 according to the first embodiment]
FIG. 1 is a schematic diagram showing a configuration example of a virtual currency system according to the first embodiment. As shown in FIG. 1, the virtual currency system 1 according to the first embodiment includes a management device 10 and a plurality of user devices 21 and 22 connected to the management device 10 via a network 30. Hereinafter, it will be described in detail.

(User devices 21, 22)
The user devices 21 and 22 are devices managed by the user. Users include individuals and corporations, as well as institutions such as central banks, private banks, and exchanges around the world. In addition to desktop computers and laptop computers, smartphones and the like can be used as the user devices 21 and 22. The network 30 connecting the user devices 21 and 22 and the management device 10 is, for example, the Internet.

(Management device 10)
The management device 10 is a device for managing virtual currency. Management includes, for example, issuance management, trading management, value management (maintaining the value of virtual currency, etc.), and history management. In the present embodiment, since the management device 10 centrally manages the virtual currency using the virtual currency ID, it is possible to easily detect fraud related to the virtual currency while suppressing the amount of calculation of the entire system.

The management device 10 is managed by the administrator of the virtual currency. An administrator is, for example, an institution such as a central bank, a private bank, or an exchange in each country in the world. The administrator does not include individuals. As long as the administrator is responsible for managing the management device 10, the management device 10 is operated directly by the administrator, or a person entrusted by the administrator follows the instructions of the administrator. It doesn't matter if you are operating.

The management device 10 may be one device, or may be a plurality of devices that operate jointly so that one device can be regarded as operating. Further, a plurality of management devices 10 may be arranged on the network 30. In this case, each of the plurality of management devices 10 may be one device, or may be a plurality of devices that operate jointly so that one device appears to be operating.

FIG. 2 is a schematic diagram showing a configuration example of the management device according to the first embodiment. As shown in FIG. 2, the management device 10 has an arithmetic unit 12 and a storage device 14. The arithmetic unit 12 is, for example, a CPU, and the storage device 14 is a device capable of reading and writing information such as a RAM or a hard disk. The storage device 14 may be built in the management device 10 (see FIG. 2) or may be externally attached to the management device 10. Further, the storage device 14 may be a device that is accessed to the arithmetic unit 12 of the management device 10 via the network 30. Each of the arithmetic unit 12 and the storage device 14 may be one device, or may be a plurality of devices that operate jointly so that one device can be regarded as operating.

3A is a schematic diagram showing an example of an issue information storage area, FIG. 3B is a schematic diagram showing an example of an account information storage area, and FIG. 3C is a schematic diagram showing an example of a history information storage area. The storage device 14 of the management device 10 has an issuance information storage area 141 for storing the virtual currency ID of the issued virtual currency and account information in one or more virtual currency IDs as shown in FIGS. 3A to 3C. An account information storage area 142 that is associated and stored, and a history information storage area 143 that stores the history information of the virtual currency in association with the virtual currency ID are provided.

(Issued information storage area 141)
The virtual currency ID of the issued virtual currency is stored in the issue information storage area 141. The virtual currency ID is data unique to each virtual currency, and one virtual currency can be uniquely specified by specifying one virtual currency ID. The virtual currency ID is assigned to all issued virtual currencies.

In the issue information storage area 141, the issue information can be stored in association with the virtual currency ID. The issuance information includes, for example, the issue price of each virtual currency, information on whether or not the consideration for the virtual currency has been received, the issue date and time of the virtual currency, and the like.

It is preferable that the issue price of each virtual currency is increased as the number of issues increases. For example, if three virtual currencies are issued, the issue price of the first issued virtual currency is 100 yen, the issue price of the second issued virtual currency is 200 yen, and the third is issued. For example, when the issue price of the issued virtual currency is 300 yen. In this way, the virtual currency can be obtained at a lower cost as the virtual currency is issued first, so that the spread of the virtual currency can be promoted.

(Account information storage area 142)
In the account information storage area 142, the account information of the administrator or the user is stored in association with one or a plurality of virtual currency IDs. Account information is information that identifies the issue destination, remittance source, and remittance destination of virtual currency. The account information includes, for example, an account number and a deposit address for depositing virtual currency, as well as virtual currency owner information such as a name and a name. When the owner information is included in the account information and disclosed, the owner of the virtual currency becomes clear, so that money laundering and the like can be effectively prevented. On the other hand, if the owner information is not included in the account information, or if it is included but not disclosed, virtual currency can be issued or remitted, but the owner is not revealed, so keep anonymity regarding virtual currency. Can be done.

(History information storage area 143)
In the history information storage area 143, the history information of the virtual currency is stored in association with the virtual currency ID. The management device 10 can easily detect fraud related to each virtual currency by verifying the consistency between the history information stored in the history information storage area 143 using the virtual currency ID. Further, the information stored in the history information storage area 143 is compared with the information stored in the issue information storage area 141 and the information stored in the account information storage area 142 to determine whether or not there is a contradiction. Therefore, it can be determined whether or not the information stored in the history information storage area 143 has been tampered with. In making this judgment, it is not necessary to calculate a special hash value that requires a huge amount of calculation.

The history information of the virtual currency includes, for example, the type of history, the account information related to the history, and the date and time of the history. The types of history include, for example, information indicating that a virtual currency has been issued, information indicating that a virtual currency buying and selling transaction (eg, transferring virtual currency between user account numbers) has been completed, and virtual. Information indicating that a buy intervention (eg, sending virtual currency from the user's account number to the management device's account number) has been performed on the currency, or a sell intervention on the virtual currency (eg, management device's Information indicating that the virtual currency has been transferred from the account number to the user's account number) is included. As a result, with respect to the virtual currency of which virtual currency ID, what account information (for example, from account information A to B), what kind of history type processing (for example, movement of virtual currency) was performed, and when. Can be judged. In FIG. 3C, "0000" indicates an administrator's account number. In addition, (out) indicates the account number of the remittance source, and (in) indicates the account number of the remittance destination. Remittance means moving virtual currency.

As described above, the storage device 14 of the management device 10 has three storage areas, that is, an issue information storage area 141, an account information storage area 142, and a history information storage area 143. A virtual currency ID is stored in each of these three storage areas. By doing so, the information stored in the history information storage area 143 is issued by using the virtual currency ID as a key, instead of relying only on the consistency of the information stored in the history information storage area 143. Information stored in the issued information storage area 141 by determining whether or not there is a contradiction with the information stored in the information storage area 141 and / or the information stored in the account information storage area 142. It can be confirmed that the information stored in the account information storage area 142 and the information stored in the history information storage area 143 have not been tampered with. For example, the history information storage area 143 describes the history information indicating the sale from the account information A to the account information B in association with the virtual currency ID = 3, but the account information storage area 142 contains the virtual currency. When the account information A is stored in association with ID = 3, it is determined that the information of either the account information storage area 142 or the history information storage area 143 may have been tampered with, and the information is managed. The device 10 can suspend or stop the processing related to the virtual currency having the virtual currency ID = 3. Further, even if one of the three storage areas is tampered with, the tampered information can be restored to the correct information by using the information stored in the remaining two storage areas.

(Asset information storage area 144, issued number storage area 145)
FIG. 3D is a schematic diagram showing an example of the asset information storage area 144, and FIG. 3E is a schematic diagram showing an example of the history information storage area 143. As shown in FIGS. 3D and 3E, the storage device 14 of the management device 10 is provided with an asset information storage area 144 for storing the asset balance, an issued number storage area 145 for storing the issued number of virtual currencies, and the like. You can also do it. The asset balance is information indicating the total value paid by the user to the administrator as consideration for virtual currency. In the example shown in FIG. 3D, the asset balance associated with the latest receipt date and time indicates the latest asset balance.

For example, when three virtual currencies are issued in total, the issue price of the first virtual currency is 1000 yen, the issue price of the second virtual currency is 1500 yen, and three. When the issue price of the virtual currency of the eye is 2000 yen and these consideration is paid from the user to the administrator, the asset balance is, for example, 4500 yen, and the issued number is, for example, 3. The consideration for the virtual currency is a value determined according to the issue price of the virtual currency, and is equal to, for example, the issue price of the virtual currency. In addition to currencies such as yen and dollars, values such as electronic money and points can be used for consideration.

The asset balance can be stored in association with the consideration of the virtual currency, the account information of the user who paid the consideration of the virtual currency, the date and time when the consideration was received, and the like. In this way, it becomes easy to identify who paid what time and how much. The management device 10 can add the issue consideration to the asset balance, for example, when the consideration has already been received or when the consideration is expected to be received. Further, the management device 10 can store the consideration and the user's account information in association with the asset balance after the addition.

Each storage area described above may be physically one storage area, or may be a plurality of storage areas that are treated as substantially one area by the arithmetic unit 12 performing a predetermined process. good.

Also in this embodiment, as in the case of mining, a hash value having a large amount of calculation is generated using all the information stored in the storage area from the past to the present, and this is newly stored in the storage area. It may be included in the information. By doing so, it is possible to prevent falsification of the information stored in the storage area. However, as described above, according to the present embodiment, it is possible to detect fraud related to virtual currency without using a falsification prevention device that uses such a hash value with a large amount of calculation. Therefore, even if a hash value is used, it is preferable to use a hash value having a small amount of calculation instead of a hash value having a large amount of calculation.

(Operation example of management device 10: Issuance of virtual currency)
FIG. 4 is a sequence diagram illustrating an operation example (issuance of virtual currency) of the management device according to the first embodiment. Hereinafter, an operation example of the management device 10 in the case where the virtual currency is issued to the user device 21 will be described with reference to FIG.

(Step S11)
First, the management device 10 receives a virtual currency issuance request for specifying account information from the user device 21. As a result, the user device 21 requests the administrator to issue a virtual currency. The virtual currency issuance request may specify the desired number of issuances in addition to the account information.

(Step S12)
When the administrator receives the consideration for the virtual currency from the user, the management device 10 preferably adds the consideration to the asset balance of the asset information storage area 144 of the storage device 14 (step S12). This makes it possible to accurately link the issuance of virtual currency with the asset balance of the administrator. In addition, it is possible to prevent unlimited buying intervention, which will be described later. It should be noted that this step can also be executed before receiving the consideration or after the virtual currency issuance process.

(Steps S13, S14)
Next, the management device 10 determines the success or failure of the issuance condition including the condition for receiving the consideration for the virtual currency (step S13), and executes the virtual currency issuance process (step S14) when the issuance condition is satisfied. .. By receiving the consideration as a condition, the value of the virtual currency can be stabilized by using the consideration as a proof of the value of the virtual currency. In addition, it is possible to limit the execution of the buying intervention described later.

The success or failure of the receiving condition can be judged by whether the consideration for the virtual currency has already been received or whether the receiving is expected to be certain. The specific mode of judgment is not particularly limited, but for example, whether or not the consideration is stored in the asset information storage area 144 corresponding to the account information specified in the virtual currency issuance request, the credit of the user. It can be determined by a numerical value indicating power, whether or not the user is stored in the storage device 14 in advance as a person with creditworthiness, and whether or not the consideration for the virtual currency can be evaluated as substantially received.

As for the issuance condition, the issued number stored in the issued number storage area 145 is not more than a predetermined upper limit, or the desired number of N (N ≧ 2) is specified in the virtual currency issuance request. If so, it is preferable to include the condition that the sum of the issued number stored in the issued number storage area 145 and the desired issued number is equal to or less than a predetermined upper limit value. The predetermined upper limit is determined according to the market trend.

Further, it is preferable that the issuance condition further includes a condition that the market price of the virtual currency is equal to or higher than the issuance price. In this way, the number of virtual currencies issued (supply amount) can be limited according to the market price, and the value of the virtual currency can be easily maintained. It is transmitted from the market price, for example, a server on the network 30, to the management device 10.

Hereinafter, the virtual currency issuance process (step S14) will be described.

(Step S141)
First, the management device 10 stores the new virtual currency ID in the issuance information storage area 141. As a result, a new virtual currency ID is issued, and that fact is recorded in the management device 10. In this step, in addition to the case where the new virtual currency ID is literally stored in the issuance information storage area 141, the unissued virtual currency ID already stored in the issuance information storage area 141 is used as the issued virtual currency ID thereafter. The case where the information in the issue information storage area 141 is rewritten so as to be handled is included. The new virtual currency ID used when the former is literally stored may be generated by the management device 10 each time in this process, or a usable unissued virtual currency ID may be generated in the storage device 14 of the management device 10 or the like. The administrator may memorize it in advance, and the management device 10 may randomly select from among them or based on a predetermined rule each time.

(Step S142)
Next, the management device 10 stores the new virtual currency ID in the account information storage area 142 in association with the account information specified by the virtual currency issuance request. As a result, the owner of the newly issued virtual currency is recorded in the management device 10.

(Step S143)
Next, the management device 10 stores the new virtual currency ID and the history information indicating that the new virtual currency has been newly issued in association with each other in the history information storage area. As a result, the fact that a new virtual currency has been issued is recorded in the management device 10.

(Step S144)
It is preferable that the management device 10 increases the issued number stored in the issued number storage area 145. By doing so, the number of issued virtual currencies can be managed, and the number of issued virtual currencies can be limited. When the desired number of issuance is not specified in the virtual currency issuance request, or when the desired number of issuance of 1 is specified in the virtual currency issuance request, the management device 10 increases the issued number by one. Further, when the desired number of N (N ≧ 2) is specified in the virtual currency issuance request, the management device 10 increases the issued number by N.

(Step S145)
It is preferable that the management device 10 transmits the virtual currency issuance notification to the user device 21. As a result, the user of the user device 21 is notified of the issuance of the virtual currency.

(Cryptocurrency trading brokerage)
FIG. 5 is a sequence diagram illustrating an operation example (trading of virtual currency) of the management device according to the first embodiment. Hereinafter, an operation example of the management device 10 in the case where the virtual currency is bought and sold between the user device 21 and the user device 22 will be described with reference to FIG.

(Steps S21, S22)
First, the management device 10 receives a sell order for which account information is specified from one user device 21 (step S21), and receives a buy order for which account information is specified from another user device 22 (step S22). .. As a result, one user device 21 requests the management device 10 to sell the virtual currency, and another user device 22 requests the management device 10 to purchase the virtual currency. The sell order may specify the desired number of sales in addition to the account information. The buy order may specify the desired number of purchases in addition to the account information.

(Steps S23, S24)
Next, the management device 10 stores the account information specified in the sell order in association with the account information storage area 142, and stores it in the account information storage area 142 in association with the account information specified in the sell order. The virtual currency ID stored in the issuance information storage area 141 is stored, and the virtual currency ID stored in the account information storage area 142 in association with the account information specified in the sell order corresponds to the history information. The success or failure of the sales brokerage condition including the condition that it is stored in the history information storage area 143 is determined (step S23), and if it is satisfied, the account information is associated with the account information specified by the sell order. The trading brokerage process (step S24) is executed assuming that the virtual currency ID stored in the storage area 142 can be traded. When a plurality of virtual currency IDs are stored in the account information storage area 142 in association with the account information specified by the sell order, it is assumed that the transaction is completed for one or more of the virtual currency IDs. The trading brokerage process (step S24) can be executed for each of the one or a plurality of virtual currency IDs. Hereinafter, the sales brokerage process (step S24) will be described.

(Step S241)
First, the management device 10 deletes the account information specified in the sell order and the virtual currency ID in which the sale is successful from the account information storage area 142, and the account information specified in the buy order and the virtual currency in which the sale is successful. It is stored in the account information storage area 142 in association with the currency ID (step S241). As a result, the virtual currency is transferred from the user of one user device 21 which is the seller to the user of the other user device 21 who is the buyer (remittance is completed), and the fact is recorded in the management device 10.

(Step S242)
Next, the management device 10 stores the virtual currency ID in which the sale has been completed and the history information indicating that the sale in the virtual currency has been completed in association with each other in the history information storage area 143. As a result, the fact that the sale (remittance) of the virtual currency has been completed is recorded in the management device 10.

(Steps S243, S244)
It is preferable that the management device 10 transmits the sale / purchase completion notification to the user device 21 and the user device 22. As a result, the user of the user device 21 and the user device 22 is notified of the completion of the sale of the virtual currency.

(Intervention to buy virtual currency)
FIG. 6 is a sequence diagram illustrating an operation example (buying intervention process) of the management device according to the first embodiment. Hereinafter, an operation example of the management device 10 when the management device 10 buys and intervenes will be described with reference to FIG.

(Step S31)
First, the management device 10 receives a sell order that specifies account information. As a result, one user device 21 requests the administrator to sell the virtual currency. The sell order may specify the desired number of sales in addition to the account information.

(Step S32)
Next, in the management device 10, the target price is equal to or less than the predetermined buy intervention set price, the account information specified in the sell order is stored in association with the account information storage area 142, and is designated in the sell order. The virtual currency ID stored in the account information storage area 142 in association with the account information is stored in the issue information storage area 141, and the account information storage area 142 is associated with the account information specified in the sell order. When the success or failure of the buy intervention condition including the condition that the virtual currency ID stored in is associated with the history information and stored in the history information storage area 143 is determined (step S32), and the buy intervention condition is satisfied. The buy intervention process (step S33) is executed assuming that the buy intervention is established for the virtual currency ID stored in the account information storage area 142 in association with the account information designated by the sell order. When a plurality of virtual currency IDs are stored in the account information storage area 142 in association with the account information specified by the sell order, it is assumed that the buy intervention is established for one or more of the virtual currency IDs. The buy intervention process (step S33) can be executed for each of one or a plurality of virtual currency IDs. In this way, the management device 10 can automatically execute the buying intervention process (without human intervention) when a predetermined condition is satisfied, and can quickly and accurately prevent the value of the virtual currency from depreciating. Can be planned. Hereinafter, the buying intervention process (step S33) will be described.

The buying intervention condition is that the asset balance stored in the asset balance stored in the asset information storage area 144 is equal to or higher than the target price, or the desired number of N (N ≧ 2) to be sold is specified in the sell order. If so, it is preferable to include the condition that the asset balance stored in the asset information storage area 144 is equal to or greater than the product of the desired number of sales and the target price. In this way, the execution of the buy intervention process can be limited to the range of the asset balance in which the manager has the assets. Therefore, it is possible to prevent unlimited buying intervention.

The target price may be, for example, the market price of the virtual currency transmitted from the server on the network 30 to the management device 10, or may be the sell order price specified in the sell order. The buy intervention set price is, for example, input to the management device 10 by the administrator in advance and stored in the storage device 14 of the management device 10.

(Step S331)
First, the management device 10 deletes the account information specified in the sell order and the virtual currency ID for which the buy intervention is established from the account information storage area 142, and the account information of the management device 10 and the virtual currency for which the buy intervention is established are established. It is stored in the account information storage area 142 in association with the ID (step S331). As a result, the virtual currency is transferred from the user of one user device 21 which is the seller to the administrator who is the buyer, and that fact is recorded in the management device 10.

(Step S332)
Next, the management device 10 stores the virtual currency ID in which the buy intervention is established and the history information indicating that the buy intervention is performed in association with each other in the history information storage area 143. As a result, the fact that the buying intervention of the virtual currency has been performed is recorded in the management device 10.

(Step S333)
The management device 10 preferably subtracts the consideration for establishing the buy intervention from the asset balance stored in the asset information storage area 144 (step S333). When the desired number of sells of N (N ≧ 2) is specified in the sell order, the product of the desired number of sells and the consideration for which the buy intervention is established is subtracted from the asset balance stored in the asset information storage area 144. .. This makes it possible to accurately manage the asset balance of the manager.

(Step S334)
It is preferable that the management device 10 transmits the sale / purchase completion notification to the user device 21. As a result, the user of the user device 21 is notified of the completion of the sale of the virtual currency.

(Intervention to sell virtual currency)
FIG. 7 is a sequence diagram illustrating an operation example (selling intervention process) of the management device according to the first embodiment. Hereinafter, an operation example of the management device 10 when the management device 10 sells and intervenes will be described with reference to FIG. 7.

(Step S41)
First, the management device 10 receives a buy order specifying account information from one user device 21. As a result, one user device 21 requests the administrator to purchase the virtual currency. The buy order may specify the desired number of purchases in addition to the account information.

(Step S42, Step S43)
Next, the management device 10 determines the success or failure of the sell intervention condition including the condition that the target price is equal to or higher than the predetermined sell intervention set price (step S42), and when the sell intervention condition is satisfied, the management device 10 The selling intervention process (step S43) is executed assuming that the selling intervention is established for the virtual currency ID stored in the account information storage area 142 in association with the account information of. When a plurality of virtual currency IDs are stored in the account information storage area 142 in association with the account information of the management device 10, it is assumed that the selling intervention is established for one or more of the virtual currency IDs. The sell intervention process (step S43) can be executed for each of the one or a plurality of virtual currency IDs. In this way, the management device 10 can automatically (without human intervention) execute the selling intervention process when a predetermined condition is satisfied. Hereinafter, the selling intervention process (step S43) will be described.

The sell intervention condition further includes the condition that the target price is equal to or higher than the issue price of the virtual currency stored in the issue information storage area in association with the virtual currency ID of the last issued virtual currency. Is preferable.

The target price may be, for example, the market price of the virtual currency transmitted from the server on the network 30 to the management device 10, or may be the buy order price specified in the buy order. The selling intervention set price is, for example, input to the management device 10 by the administrator in advance and stored in the storage device 14 of the management device 10.

(Step S431)
First, the management device 10 deletes the account information of the management device 10 and the virtual currency ID for which the selling intervention has been established from the account information storage area 142, and also deletes the account information specified in the buy order and the virtual currency for which the sale has been established. It is stored in the account information storage area 142 in association with the ID. As a result, the virtual currency is transferred from the administrator who is the seller to the user of one user device 21 who is the buyer, and that fact is recorded in the management device 10.

(Step S432)
Next, the management device 10 stores the virtual currency ID in which the selling intervention has been established and the history information indicating that the selling intervention has been performed in association with each other in the history information storage area 143. As a result, the fact that the virtual currency selling intervention has been performed is recorded in the management device 10.

(Step S433)
The management device 10 preferably adds the price at which the sell intervention is established to the asset balance stored in the asset information storage area 144. This makes it possible to accurately manage the asset balance of the manager.

(Step S434)
It is preferable that the management device 10 transmits the sale / purchase completion notification to the user device 21. As a result, the user of the user device 21 is notified of the completion of the sale of the virtual currency.

According to the first embodiment described above, the virtual currency ID can be used to detect fraud related to the virtual currency without consuming a huge amount of calculation. Therefore, it is possible to provide the management device 10 and the virtual currency system 1 that can smoothly operate the entire system.

Further, according to the trading mediation condition and the buying intervention condition of the present embodiment, it is possible to prevent the illegal buying and selling of the virtual currency and the erroneous exercise of the buying intervention. That is, by providing that the account information specified in the sell order is stored in association with the account information storage area 142, it is possible to prevent an unauthorized sale of the virtual currency by a person who does not have the account information. be able to. Further, the unissued virtual currency is sold on condition that the virtual currency ID stored in association with the account information specified in the sell order is stored in the issue information storage area 141. Can be prevented. Further, there is no history information on condition that the virtual currency ID stored in association with the account information specified in the sell order is stored in the history information storage area 143 in association with the history information. It is possible to prevent unauthorized sale of virtual currency (eg, virtual currency with no history of issuance). Further, since the condition is not satisfied when any one of the three storage areas is invalid, the trading mediation process is performed when the information in any one of the three storage areas is falsified. And the execution of buying intervention processing can be effectively prevented.

Existing virtual currencies such as Bitcoin do not have a function to store value, so there is a risk that prices will plummet. However, according to the present embodiment, since the issuance of the virtual currency is executed in exchange for consideration, it is possible to create a virtual currency having a value storage function. In addition, the value of the virtual currency can be secured by detecting fraud in the mediation of buying and selling. In addition, the execution of buying intervention can directly curb the plunge in value. Therefore, according to the present embodiment, it is possible to provide a virtual currency having a stable value by imparting a value storage function as one of the necessary elements as a currency that is widely distributed to the issued virtual currency. ..

According to the present embodiment, the management device 10 on the network 30 (when a plurality of management devices 10 are connected to the network 30, for example, the management device 51 belonging to the uppermost layer described later. The same shall apply hereinafter in this paragraph). Is positioned as a central bank, and the only virtual currency can be issued from the management device 10 positioned as this central bank. Currently, the mainstream cryptocurrency is the concept of mining, and the miner (miner) who uses CPU time, power, and labor costs receives the consideration for issuing the cryptocurrency, so the value of the cryptocurrency itself is used. There is no value to support. On the other hand, according to the present embodiment, it is possible to effectively suppress the issuance of the virtual currency issued by the management device 10, the CPU time in circulation, the electric power, and the labor cost. Further, the virtual currency issued by the management device 10 is put on the market by a user such as an individual or a corporation exchanging other currencies. As a result, the asset balance (foreign currency reserve) is accumulated in the asset information storage area of the management device 10 at the same time as the issuance. By creating an asset balance (foreign currency reserve), the management device 10 can purchase virtual currency from the market (buying intervention) when the market price of the virtual currency issued by itself drops. Further, according to the present embodiment, by raising the issue price each time a virtual currency is issued, it is easy to suppress a sharp drop in the price as compared with other virtual currencies. Further, according to the present embodiment, the price of the virtual currency can be left to the supply and demand of the market, the number of issued virtual currencies can be automatically determined based on the market price, and the labor required to maintain the system can be reduced. The administrator can receive various consideration such as dollar, euro, SDR, yen, yuan, pound, etc. from the user in exchange for the virtual currency by the management device 10, and these consideration is added to the asset balance. .. Such asset balances have the property of foreign currency reserves and have the function of storing value in virtual currencies.

[Virtual currency system 2 according to the second embodiment]
FIG. 8 is a sequence for explaining an operation example of the virtual currency system according to the second embodiment. As shown in FIG. 8, in the virtual currency system 2 according to the second embodiment, when the management device 10 receives a virtual currency issuance request for specifying account information from the user device 21 (step S51), the consideration for the virtual currency is paid. It is determined whether or not the issuing condition including the receiving condition is successful (step S52), and when the issuing condition is satisfied, a new virtual currency ID is stored in the issuing information storage area 141 (step S53). Further, when the management device 10 receives a sell order for which account information is specified from one user device 21 (step S54), the management device 10 includes a buying intervention condition including a condition that the target price is equal to or less than a predetermined buying intervention set price. The success or failure is determined (step S55), and when this buying intervention condition is satisfied, the consideration for which the buying intervention is established is subtracted from the asset balance stored in the asset information storage area 144 (step S56). After the completion of step S56, the management device 10 preferably transmits a sale / purchase completion notification to the user device 21 (step S56). According to the second embodiment, since the management device 10 can automatically execute the buying intervention process (without human intervention) when a predetermined condition is satisfied, it is possible to quickly and accurately prevent the value of the virtual currency from dropping sharply. can.

[Virtual currency system 3 according to the third embodiment]
FIG. 9 is a sequence for explaining an operation example of the virtual currency system according to the third embodiment. As shown in FIG. 9, the virtual currency system 3 according to the third embodiment is a virtual currency system including a plurality of management devices 51 to 57 which are layered in a tree shape and connected to each other. The management device belonging to one layer includes an issue information storage area for its own device and an issue information storage area for another device. In the issue information storage area for other devices, the information stored in the issue information storage area for the own device of the management device belonging to the next lower layer of one layer is stored. That is, information is shared (or synchronized) between the issue information storage area for another device and the issue information storage area for the own device of the management device belonging to the next lower layer of one layer. The management devices 52 and 53 belonging to the second layer are connected directly under the management device 51 belonging to the first layer, and the management devices 54, 55 and 56 belonging to the third layer are directly below the management device 52 belonging to the second layer. , 57 are connected.

More specifically, the uppermost layer management device 51 includes an issue information storage area A for its own device and issue information storage areas B and C for other devices. Further, the management device 52 belonging to the second layer includes an issue information storage area B for its own device and issue information storage areas D, E, F, and G for other devices. Further, the management device 53 belonging to the second layer includes an issue information storage area C for its own device and an issue information storage area H, I, J, K for another device. Further, the management devices 54, 55, 56, 57 belonging to the third layer each include issue information storage areas D, E, F, and G for their own devices, and each include issue information storage areas for other devices. ing. The issuance information storage areas B and C for other devices included in the uppermost layer management device 51 are own devices of the management devices 52 and 53 belonging to the second layer and connected directly under the uppermost layer management device 51. Issuance information for use Information stored in the storage areas B and C is stored. Further, the issuance information storage areas D, E, F, and G for other devices included in the management device 52 belonging to the second layer are managed to be connected directly under the management device 52 belonging to the third layer and belonging to the second layer. The information stored in the issued information storage areas D, E, F, and G for the own device included in the devices 54, 55, 56, and 57 is stored, respectively.

According to the third embodiment, the user device can send a virtual currency issuance request, a sell order, a buy order, and the like to any of the plurality of management devices 51 to 57, and thus the virtual currency system. The load of the traffic in 3 can be distributed. Further, since the issue information storage area is shared between the management device belonging to one layer and the management device belonging to the next lower layer, the issue information for other devices included in the management device belonging to one layer is provided. Fraud detection is facilitated by comparing the contents stored in the issue information storage area for own device of the management device belonging to the management device belonging to the lower hierarchy with the storage area and determining whether the two match. be able to.

Although illustrations and detailed explanations are omitted, the account information storage area and the history information storage area also belong to the management device belonging to one layer and the management device belonging to the layer below it, as in the case of the issuance information storage area. Can be shared (or synchronized) with.

In the third embodiment, write-protection and / or read-protection to at least one storage area of the issue information storage area for the own device, the account information storage area for the own device, and the history information storage area for the own device is set. Write protection and / or read protection to at least one storage area of the issuance information storage area for other devices, the account information storage area for other devices, and the history information storage area for other devices is set. May be. By doing so, the functions of the management devices belonging to the lower hierarchy can be restricted according to the authority of the administrator of the management device belonging to the lower hierarchy, so that the administrator of the management device belonging to the lower hierarchy can be restricted. , The function of the management device belonging to the lower hierarchy can be appropriately restricted when the authority to mediate the buying and selling is possessed but the authority to issue the virtual currency is not possessed.

The plurality of management devices 51 to 57 may be directly connected, may be connected via other devices, or may be connected via a network such as the Internet or a dedicated line. ..

[others]
In the present specification, sending or receiving one request or one order specifying one piece of information means, for example, receiving one request or one order containing one piece of information itself, or one request. When the information is received before and / or after the request is received, or when the information itself is not received but the information can be identified from the received request. And so on.

Further, in the present specification, when deleting a certain information or data stored in a certain area, the information or the data is literally deleted in the area (example: the information or the data is stored). In addition to the case of literally deleting the existing record (line) etc.), the case of substantially deleting the information or the data by invalidating the information or the data in the area without deleting the information (example: the information or the data etc.) (When storing other information or other data indicating invalidity in the record (row) etc. in which is stored) is included.

Further, in the present specification, one request, one order, etc. may be transmitted / received as one data, or may be divided into a plurality of data and transmitted / received. Further, one request, one order, etc. may be transmitted / received at one time, or may be transmitted / received in a plurality of times. Further, one request, one order, etc. may be transmitted and received independently, or may be transmitted together with other information. For example, by adding information such as a header to the above-mentioned one request or one order to form one or more packets, and transmitting and receiving the one or more packets, the above-mentioned one request or You may send and receive one order.

Central banks and private banks in each country can issue new virtual currencies and real currencies whose value is backed by the virtual currency issued by the management device 10.

Although the embodiments have been described above, the configurations described in the claims are not limited by these explanations.

1, 2, 3 Virtual currency system 10 Management device 12 Computing device 14 Storage device 141 Issued information storage area 142 Account information storage area 143 History information storage area 144 Asset information storage area 145 Issued number storage area 21, 22 User device 30 Network 51-57 management device

Claims (4)

It is a system including a plurality of management devices that are layered in a tree shape and connected to each other, and the management devices are
It has a storage area for its own device and a storage area for other devices.
The storage area for the other device included in the management device belonging to one layer includes the storage area for the own device included in the one or more management devices belonging to the layer one level below the one layer. The stored information is stored, and the information stored in the storage area for the own device included in the one or a plurality of the management devices belonging to two or more layers below the one layer is not stored.
The management device belonging to one layer is for the other device included in the management device belonging to one layer between the management device belonging to one or a plurality of the management devices belonging to the layer one level below the one layer. A system that synchronizes information stored in a storage area and a storage area for its own device included in one or a plurality of management devices belonging to a layer one layer below the one layer . The system according to claim 1 , wherein the management device belonging to one layer is connected to one or more of the management devices belonging to a layer one level below the one layer. The management device in a system having a plurality of management devices layered in a tree shape and connected to each other.
It has a storage area for its own device and a storage area for other devices.
The storage area for the other device included in the management device belonging to one layer includes the storage area for the own device included in the one or more management devices belonging to the layer one level below the one layer. The stored information is stored, and the information stored in the storage area for the own device included in the one or a plurality of the management devices belonging to two or more layers below the one layer is not stored.
The management device belonging to one layer is for the other device included in the management device belonging to one layer with one or a plurality of the management devices belonging to the layer one level below the one layer. A management device that synchronizes information stored in a storage area and a storage area for the own device included in one or a plurality of the management devices belonging to a layer one layer below the one layer . The management device according to claim 3 , wherein the management device belonging to one layer is connected to one or more of the management devices belonging to the layer one level below the one layer.

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