CN107330692A - The circulation method and device of digital cash - Google Patents

Abstract

The present invention provides a kind of circulation method of digital cash, and this method disclosure satisfy that the requirement of real money circulation, and improve the treatment effeciency of digital cash circulation.This method includes：Payment end selects digital cash word string according to Payment Amount and predefined matching strategy from the digital cash safe deposit box at payment end, then composition pays source digital cash word string collection, payment source digital cash word string collection is sent to management end again, digital cash word string has：The digital cash word string for there are one or more owners to be designated payment end is deposited in amount field and owner's identification field, the digital cash safe deposit box at end of paying the bill；The digital cash word string for paying source digital cash word string concentration is registered as cancel status by management end, then whereabouts digital cash word string is paid according to Payment Amount generation, and payment whereabouts digital cash word string is sent to gathering end, the amount of money for paying whereabouts digital cash word string is Payment Amount, and the owner is designated gathering end.

Description

Circulation method and device of digital currency

technical field

The present invention relates to the field of computer technology, in particular to a digital currency circulation method and device.

Background technique

The circulation of existing virtual digital currencies is typically through UTXO. The transaction address is used as the payment or collection end of the virtual digital currency. Each transaction core includes the transaction address of the payment terminal, the transaction address of the payment terminal and the amount. The user holds the virtual digital currency by calculating the UTXO of the transaction address owned by the user. The user pays the virtual digital currency by initiating a new transaction, thereby changing the UTXO balance of the transaction address of the payment terminal and the payment terminal. In essence, there is no currency transfer in the existing virtual digital currency circulation, but only a set of continuous transaction records.

In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: first, the basis of the circulation of the existing virtual digital currency is the transaction rather than the currency itself, and the transaction of the existing virtual digital currency reflects The transaction records at the receiving end. Therefore, when the user wants to confirm the virtual digital currency held, he must summarize all transactions and calculate the balance. This method is relatively inefficient. Moreover, the existing virtual digital currency cannot meet the requirements of actual currency circulation. The existing virtual digital currency is anonymously circulated and can only be kept by password. Once the password is lost, it is difficult to retrieve it, which does not meet the needs of practical applications. If the virtual digital currency circulation process involves illegal activities, it is also difficult to track and investigate.

Therefore, there is an urgent need for a digital currency circulation method and device that can meet the requirements of actual currency circulation and improve the processing efficiency of circulation.

Contents of the invention

In view of this, the embodiments of the present invention provide a digital currency circulation method and device, which can meet the requirements of actual currency circulation and improve the processing efficiency of digital currency circulation.

In order to achieve the above purpose, according to an aspect of the embodiments of the present invention, a digital currency circulation method is provided, the method includes:

The payment terminal selects digital currency strings from the digital currency safe deposit box of the payment terminal according to the payment amount and the predefined matching strategy, and then forms a payment source digital currency string set, and then sends the payment source digital currency string set to the management terminal, The digital currency string has: an amount field and an owner identification field, and one or more digital currency strings identified by the owner as the payment terminal are stored in the digital currency safe deposit box at the payment terminal;

The management terminal registers the digital currency strings in the payment source digital currency string set as invalid, then generates a payment destination digital currency string according to the payment amount, and sends the payment destination digital currency string to the collection end, the amount of the payment destination digital currency string is the payment amount, and the owner is identified as the payee end.

Optionally, the matching strategy is the least coin string strategy;

The payment terminal selects a digital currency string from the digital currency safe deposit box of the payment terminal according to the payment amount and a predefined matching strategy, and then the steps of forming a payment source digital currency string set include:

Sort the digital currency strings in the digital currency safe deposit box at the payment terminal according to the amount from large to small;

Select digital currency strings in sequence in the sorting and then combine them until the sum of the combined digital currency strings is greater than or equal to the payment amount, and then use the combined digital currency strings as the payment source digital currency set of strings.

Optionally, the matching strategy is the most coin string strategy;

The payment terminal selects a digital currency string from the digital currency safe deposit box of the payment terminal according to the payment amount and a predefined matching strategy, and then the steps of forming a payment source digital currency string set include:

Sort the digital currency strings in the digital currency safe deposit box at the payment terminal according to the amount from small to large;

Select digital currency strings in sequence in the sorting and then combine them until the sum of the combined digital currency strings is greater than or equal to the payment amount, and then use the combined digital currency strings as the payment source digital currency set of strings.

Optionally, the matching strategy is the least difference strategy;

The payment terminal selects a digital currency string from the digital currency safe deposit box of the payment terminal according to the payment amount and a predefined matching strategy, and then the steps of forming a payment source digital currency string set include:

Among all the digital currency string combinations whose total amount in the digital currency safe deposit box is not less than the payment amount, search for the digital currency string combination with the smallest difference from the payment amount as the payment source digital currency string set.

Further, after the management terminal registers the digital currency strings in the payment source digital currency string set as invalid, it also includes:

The management terminal generates the change digital currency string identified by the owner as the payer according to the payment source digital currency string set and the payment amount, and then sends the change digital currency string to the payer, and the change The amount of the digital currency string is the difference between the sum of the amount of the payment source digital currency string set and the payment amount.

Further, the digital currency circulation method provided by the present invention also includes:

The management terminal records the field information of the digital currency string of the payment source digital currency string, the digital currency string of the payment destination, and the change digital currency string.

In order to achieve the above object, according to another aspect of the embodiment of the present invention, a digital currency circulation device is also provided, the device includes:

The currency selection module is used to select a digital currency string from the digital currency safe deposit box according to the payment amount and a predefined matching strategy, and then form a payment source digital currency string set. The digital currency string has: an amount field and an owner An identification field, the digital currency safe deposit box stores one or more digital currency strings identified by the owner as the payment terminal;

The first sending module is used to send the payment source digital currency string set to the management terminal, wherein the management terminal registers the digital currency strings in the payment source digital currency string set as invalid, and then according to the The payment amount generates a payment destination digital currency string, and sends the payment destination digital currency string to the payee, the amount of the payment destination digital currency string is the payment amount, and the owner is identified as the payee.

Optionally, the currency selection module is further used to sort the digital currency strings in the digital currency safe deposit box at the payment end according to the amount from large to small, and select the digital currency strings in order in the sorting and then combine them until The sum of the amounts of the combined digital currency strings is greater than or equal to the payment amount, and then the combined digital currency strings are used as the payment source digital currency string set.

Optionally, the currency selection module is further used to sort the digital currency strings in the digital currency safe deposit box at the payment end according to the amount from small to large, and select the digital currency strings in order in the sorting and then combine them until The sum of the amounts of the combined digital currency strings is greater than or equal to the payment amount, and then the combined digital currency strings are used as the payment source digital currency string set.

Optionally, the currency selection module is further configured to search for the combination of digital currency strings with the smallest difference from the payment amount among all digital currency string combinations in which the sum of the amounts in the digital currency safe deposit box is not less than the payment amount. The payment source digital currency string set.

In order to achieve the above object, according to another aspect of the embodiment of the present invention, a digital currency circulation device is also provided, the device includes:

The receiving module is used to receive the payment source digital currency string set sent by the payment terminal, wherein the payment terminal selects the digital currency string from the digital currency safe deposit box of the payment terminal according to the payment amount and the predefined matching strategy, and then forms the payment source number A currency string set, the digital currency string has: an amount field and an owner identification field, and one or more digital currency strings identified by the owner as the payment terminal are stored in the digital currency safe deposit box at the payment terminal;

An invalidation registration module, configured to register the digital currency strings in the digital currency string set of the payment source as an invalidated state;

A currency generating module, configured to generate a payment destination digital currency string according to the payment amount, the amount of the payment destination digital currency string is the payment amount, and the owner is identified as the payee;

The second sending module is used to send the payment destination digital currency string to the payee.

Further, the digital currency circulation device provided by the embodiment of the present invention further includes: a change generation module and a third sending module;

The change generation module is used to generate a change digital currency string identified by the owner as the payment terminal according to the payment source digital currency string set and the payment amount, and the amount of the change digital currency string is the payment source The difference between the sum of the sum of the digital currency strings and the payment amount;

The third sending module is used to send the change digital currency string to the payment terminal.

Further, the digital currency circulation device provided by the embodiment of the present invention further includes: an information recording module, configured to record the digital currency strings in the payment source digital currency string set, the payment destination digital currency string and all Record the field information of the above-mentioned change digital currency string.

In order to achieve the above object, according to another aspect of the embodiments of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium stores computer instructions, and the computer instructions can be executed by a computer or a computer system , so that the computer or computer system can execute the digital currency circulation method provided by the embodiment of the present invention.

The digital currency circulation method and device provided by the embodiments of the present invention realize the digital currency circulation based on digital currency strings, and the digital currency circulation method can meet the requirements of actual currency circulation. Holders of digital currency strings can confirm their rights only based on the field information of the digital currency string itself, without summarizing past receipt and payment transactions, which improves the processing efficiency of digital currency circulation. In this method, the circulation of digital currency is represented by the conversion of digital currency strings. During the transaction process, the source currency string and the destination currency string can be clearly distinguished, and the source currency string and the destination currency string are associated through the transaction. , to solve the problem that the current circulation of virtual digital currency only has transactions without coins, and all digital currency string conversions must be carried out through the management-side digital currency system, and the source currency string is invalidated to generate a new destination currency string, thereby This enables monetary authorities to better monitor currency circulation. Moreover, through the combination of the information structure of the digital currency string and the circulation agreement and contract for the configuration of the digital currency string, the application of the digital currency is extremely scalable, and its role in currency circulation far exceeds that of the current currency. There are virtual digital currencies.

The further effects of the above-mentioned non-conventional alternatives will be described below in conjunction with specific embodiments.

Description of drawings

The accompanying drawings are used to better understand the present invention, and do not constitute improper limitations to the present invention. in:

Fig. 1 is a flowchart of a digital currency circulation method provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the structure of the digital currency string provided by the embodiment of the present invention;

Fig. 3 is a schematic diagram of the transfer process of the digital currency string provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of a digital currency circulation system provided by an embodiment of the present invention;

Fig. 5 is a schematic diagram of a payment terminal and a management terminal provided by an embodiment of the present invention.

detailed description

Exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present invention to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

The implementation of the present invention provides a digital currency circulation method. As shown in FIG. 1 , the method includes steps S101 to S102. The method uses digital currency strings as the basis for digital currency circulation. The digital currency string has a field structure, and the application attribute information of the digital currency is recorded and carried through the field structure. Using the application attribute information of the digital currency can realize functions such as controlling the flow of digital currency funds and executing specific applications, so that the digital currency can Meet the needs of application scenarios and value-added services.

For example, in one embodiment of the present invention, the field structure in the digital currency string can be configured as follows: each field can be graded and has a variable length, and the number of fields can also be expanded according to requirements.

In the present invention, the digital currency string has: an amount field and an owner identification field, the amount field is used to indicate the most basic amount represented by the currency itself, and the owner identification is used to indicate the owner of the digital currency string, through all The identity of the author can further be associated with the real-name information of the real user.

Of course, in combination with the specific application requirements of the digital currency, other configurations can also be performed on the field content of the digital currency string. The digital currency circulation method provided by the present invention can be applied to the circulation of legal digital currency, wherein the legal digital currency is issued or authorized by the central bank, and is represented by an encrypted digital string representing a specific amount of legal currency. When the method of the present invention is applied to the application scenario of legal digital currency circulation, the digital currency string can be configured according to the circulation requirements of legal digital currency. For example, as shown in Figure 2, in the structure of the digital currency string It can also be configured with: issuer identification field, currency management attribute field, currency security attribute field, currency application attribute field and currency number field. Among them, the digital currency has a unique number through the currency number field, the currency management attribute is used to support the currency authority to manage the currency issuance and circulation, and the digital currency security attribute is a set of fields related to digital currency security encryption, which can realize that digital currency cannot be forged , non-tampering, non-repudiation, protection of privacy, protection of transaction security, etc., currency application attributes are used to support specific applications and value-added services of currency. In terms of security, digital currency encryption strings can also be added to the structure of digital currency strings to encrypt digital currency strings, so that different authorized parties can only decrypt the content of corresponding digital currency strings within the scope of authority, and have no right to decrypt the content of digital currency strings. The party cannot view the content of the digital currency string. At the same time, based on security considerations, any part of the digital currency string structure can be configured to be irregular.

The digital currency circulation method provided by the implementation of the present invention uses the digital currency string as the physical basis of currency circulation, and the configuration of the digital currency string can be realized through the field structure of the digital currency string, so that it can record information, so that based on The digital currency circulation of digital currency strings can meet the requirements of actual currency circulation, and the holders of digital currency strings can confirm their rights only based on the field information of the digital currency string itself, without summarizing past payment transactions , improving the processing efficiency of digital currency circulation. Moreover, the information recorded through the digital currency string combined with the circulation agreement and contract configured for the digital currency string makes the digital currency extremely scalable in terms of application, making it play a role in currency circulation far beyond the current There are virtual digital currencies.

In step S101, the payer selects a digital currency string from the digital currency safe deposit box of the payer according to the payment amount and a predefined matching strategy, and then forms a payment source digital currency string set, and then forms the payment source digital currency string set sent to the management side. Wherein, the payment amount is the determined actual amount that the payer needs to pay to the payee. In the embodiment of the present invention, the digital currency string selected by the payer for payment is called the source currency string, and the digital currency string generated by the management terminal in the subsequent step S102 and sent to the payer is called the destination currency string.

Wherein, the digital currency safe deposit box is used to store digital currency strings, and the digital currency safe deposit box at the payment terminal stores one or more digital currency strings identified by the owner as the payment terminal. In a specific application environment, the holder of the digital currency string can be an individual, an enterprise or a bank. For an individual or enterprise, the digital currency safe deposit box can be used as a digital wallet in the application, and for a bank, it can be used as a bank library.

In step S101, first select the digital currency string used to pay to the payment terminal from the digital currency safe deposit box at the payment terminal as the source currency string, and then send the source currency string to the management terminal, and the selected source currency string The sum of the amount cannot be less than the determined payment amount, that is, there are two situations where the sum of the source currency string is equal to the payment amount and the sum of the source currency string is greater than the payment amount. Source currency string for change.

Since the digital currency string itself has an amount attribute, in the payment process, for example, 25 yuan needs to be paid, if the amount of the digital currency string in the digital currency safe deposit box is large or small, such as 13, 2, 79 yuan, etc. It is necessary to use a matching strategy in the digital currency safe deposit box to select which amount of digital currency string to use for payment. In the present invention, the matching strategy adopted may be one of the following three types: least coin string strategy, most coin string strategy or least difference strategy.

When the matching strategy is the least currency string strategy, then in step S101, the payer sorts the digital currency strings in the digital currency safe deposit box of the payer in descending order of amount. Then, in the sorting process, select the digital currency strings from large to small and then combine them until the sum of the combined digital currency strings is greater than or equal to the payment amount, and then use the combined digital currency strings as the payment source digital currency set of strings. Since the selection is performed one by one from large to small, when the sum of the selected digital currency strings is greater than or equal to the payment amount, the number of selected digital currency strings is the least.

When the matching strategy is the most currency string strategy, then in step S101, the payer sorts the digital currency strings in the digital currency safe deposit box of the payer in ascending order of amount. Then, select the digital currency strings in order and combine them until the sum of the combined digital currency strings is greater than or equal to the payment amount, and then use the combined digital currency strings as the payment source digital currency string set. Compared with the least currency string strategy, the most currency string strategy selects one by one from small to large. When the sum of the selected digital currency strings is greater than or equal to the payment amount, the number of selected digital currency strings is the largest.

When the matching strategy is the least difference strategy, then in step S101, the payer searches for the digital currency string with the smallest difference from the payment amount among all combinations of digital currency strings whose total amount in the digital currency safe deposit box is not less than the payment amount The combination is used as the payment source digital currency string set, and the least difference strategy is adopted without paying attention to the number of selected digital currency strings, and the sum of the selected digital currency string combinations is closest to the payment amount.

For example, if the digital currency safe deposit box of the payer has digital currency strings with amounts of 100, 50, 20, 20, 10, 5, and 5, respectively, and the payment amount is 47 yuan, then the payment source obtained by using the least currency string strategy is selected The digital currency string set includes: digital currency strings with an amount of 100, and the payment source digital currency string set selected by using the most currency string strategy includes: digital currency strings with amounts of 20, 20, 10, 5 and 5 respectively , the set of payment source digital currency strings selected by adopting the least difference strategy includes: digital currency strings with an amount of 50.

In the specific implementation process, the matching strategy can be selected according to the actual application needs, and the matching rules can be used as a function provided by the system, specified by the user, or automatically recommended by the system. For example, when you want to pay with the largest digital currency string and want to get change, you can apply the least currency string strategy. When you want to spend the change, you can apply the most currency string strategy. When you want to pay the digital currency string When the strings are as close as possible, the least difference strategy is applied.

Of course, the matching strategies adopted in step S101 are not limited to the above-mentioned three types. For example, the strategy of the least coin string and the strategy of the most coin string can be combined with the strategy of the least balance respectively to obtain The selection result that satisfies the condition of the least coin string or the most coin string.

In step S101, the payer sends the payment source digital currency string set composed of source currency strings to the management terminal. Furthermore, in step S102, the management terminal registers the digital currency strings in the payment source digital currency string set as invalid, then generates a payment destination digital currency string according to the payment amount, and sends the payment destination digital currency string to the recipient The payment terminal, the amount of the payment destination digital currency string is the payment amount, and the owner identification is the payment terminal.

In the present invention, the payment terminal can send a payment information with its own digital signature to the management terminal to send the payment source digital currency string set and the payment amount to the management terminal. In the actual application process, the payment information can also be Including: payer information, payee information, payment time and other payment-related information. After receiving the payment information, the management terminal verifies the digital signature of the payment terminal, and then obtains relevant information such as the payment source digital currency string set and payment amount from the payment information.

In the present invention, the management terminal deploys a digital currency system for processing digital currency transactions. After receiving the payment source digital currency string set, the management terminal first confirms the source currency string in the payment source digital currency string set. Rights and authenticity verification. Confirmation includes validity verification, owner verification and amount verification of the source currency string to ensure that the owner and amount of the source currency string have not been tampered with. Among them, validity verification is to verify whether the source currency string has been verified by the system. Register as invalid. In the digital currency system, the digital currency strings that have been spent are registered as invalid. Validity verification can ensure that the source currency strings are not repeatedly spent. Authenticity verification is to verify the authenticity of the digital currency through the currency security attribute field of the digital currency string to ensure that the source currency string is true.

In step S102, after the source currency string has passed the digital currency system’s confirmation and authenticity verification, the digital currency system at the management end registers the source currency string in the payment source digital currency string set as invalid, that is, identifies for already spent. Then generate the payment destination digital currency string, that is, the destination currency string.

In the present invention, the digital currency system at the management end completes the transfer of the digital currency string by invalidating the source currency string identified by the owner as the payer, and then generating the destination currency string identified by the owner as the payee. All transfers of digital currency strings must be carried out through the management-side digital currency system, so that monetary authorities can better supervise the circulation of digital currency. The transfer process can be divided into the following three transfer methods: direct transfer, merge transfer and split transfer.

Among them, as shown in Figure 3, the direct transfer is a process in which user A transfers the digital currency string 1 to user B, and the digital currency string 1 is registered as invalid after the transfer occurs, and a new digital currency string 2 is generated , whose owner ID corresponds to user B. The amount of digital currency string 1 and digital currency string 2 is the same as the payment amount.

Combined transfer is the process in which user B transfers two digital currency strings together to user C. There are two source currency strings: digital currency string 2 and digital currency string 3, and a new digital currency string 4 is generated after the transfer occurs. The amount of the digital currency string 4 is equal to the sum of the amounts of the two source currency strings, and the owner identifier of the digital currency string 4 corresponds to user C.

Split transfer is the process in which user C transfers 4 parts of the digital currency string to user D. The source currency string is the digital currency string 4, and a new digital currency string 5 is generated after the transfer, its owner ID corresponds to user D, and its amount is the payment amount. At the same time, a new digital currency string 6 is generated, its owner ID corresponds to user C, and its amount is the balance after payment.

Split transfer means that the sum of the source currency strings is greater than the payment amount, and change needs to be made. In this case, while performing step S102, the management terminal also sets the payment source digital currency string and the payment amount Generate a change digital currency string identified by the owner as the payer, and then send the change digital currency string to the payer. The amount of the change digital currency string is the sum of the sum of the payment source digital currency string set and the payment amount difference.

In the present invention, while abolishing the source currency string and generating the destination currency string, the management terminal also checks the digital currency string, payment destination digital currency string, and change digital currency string in the payment source digital currency string set. String field information and other digital currency conversion transaction details are recorded. The digital currency system on the management side can track and manage each digital currency string through the field information of the recorded digital currency string, so that the circulation of digital currency strings can meet the requirements of actual currency that can be supervised.

Moreover, the management terminal can establish the correspondence between the owner ID and the real user based on the owner ID field information of the recorded digital currency string. During the application process, the owner ID of the digital currency string can be configured as associated information. This associated information is anonymous in the front end of the digital currency system, and the background of the digital currency system can find the real name corresponding to the owner ID through the associated information. In this way, while protecting the privacy of digital currency holders, the traceability of digital currency can be realized, and the background of the management terminal can track the circulation process of digital currency strings with real names, which helps to meet the regulatory requirements of monetary authorities and crack down on crimes Activities to protect the rights and interests of users.

The circulation method of digital currency provided by the embodiment of the present invention is based on the digital currency string to realize the circulation of digital currency, and the circulation method of digital currency can meet the requirements of actual currency circulation. Holders of digital currency strings can confirm their rights only based on the field information of the digital currency string itself, without summarizing past receipt and payment transactions, which improves the processing efficiency of digital currency circulation. In this method, the circulation of digital currency is represented by the conversion of digital currency strings. During the transaction process, the source currency string and the destination currency string can be clearly distinguished, and the source currency string and the destination currency string are associated through the transaction. , to solve the problem that the current circulation of virtual currency only has transactions without coins, and all conversions of digital currency strings must be carried out through the digital currency system on the management side, and the source currency strings are invalidated to generate new destination currency strings, so that Monetary authorities can better regulate currency circulation. Moreover, through the combination of the information structure of the digital currency string and the circulation agreement and contract for the configuration of the digital currency string, the application of the digital currency is extremely scalable, and its role in currency circulation far exceeds that of the current currency. There is virtual currency.

The embodiment of the present invention also provides a digital currency circulation system, as shown in FIG. 4 , the system includes: a payment terminal 500 , a management terminal 600 and a payment terminal 700 . The realization of the system can adopt a centralized system architecture or a distributed system architecture.

Wherein, as shown in FIG. 4 and FIG. 5 , the payment terminal 500 includes: a currency selection module 501 and a first sending module 502 . The management terminal 600 includes: a receiving module 601 , an invalid registration module 602 , a currency generating module 603 , a second sending module 604 , a change generating module 605 , a third sending module 606 and an information recording module 607 .

The currency selection module 501 is used to select a digital currency string from the digital currency safe deposit box according to the payment amount and a predefined matching strategy, and then form a payment source digital currency string set. The digital currency string has: an amount field and an owner identification field, and one or more digital currency strings identified by the owner as the payment terminal are stored in the digital currency safe deposit box.

In the present invention, optionally, the currency selection module 501 is further used to sort the digital currency strings in the digital currency safe deposit box at the payment terminal according to the amount from large to small, and select the digital currency strings in sequence in the sorting and then combine them , until the total amount of the combined digital currency strings is greater than or equal to the payment amount, and then the combined digital currency strings are used as the payment source digital currency string set.

In the present invention, optionally, the currency selection module 501 is further used to sort the digital currency strings in the digital currency safe deposit box at the payment end according to the amount from small to large, and select the digital currency strings in sequence in the sorting and then combine them , until the total amount of the combined digital currency strings is greater than or equal to the payment amount, and then the combined digital currency strings are used as the payment source digital currency string set.

In the present invention, optionally, the currency selection module 501 is further used to search for the digital currency string with the smallest difference from the payment amount among all combinations of digital currency strings in which the sum of the amounts in the digital currency safe deposit box is not less than the payment amount Combination as payment source digital currency string set.

The first sending module 502 is used to send the payment source digital currency string set to the management terminal.

In the present invention, the management terminal 600 can be realized by the digital currency issuing institution through the digital currency system. In the management terminal 600, the receiving module 601 is used to receive the payment source digital currency string set sent by the payment terminal.

The invalidation registration module 602 is used to register the digital currency strings in the payment source digital currency string set as invalidated. A registration center can be set and maintained in the management terminal 600 to store the registration information of all digital currency strings and the string information of digital currency strings. Users can identify the authenticity, query and verify the ownership of digital currency strings through the registration center. In a specific application environment, it can be configured that any user can query the authenticity of the digital currency, but the owner and amount information query must be authorized by the owner.

The currency generation module 603 is used to generate a payment destination digital currency string according to the payment amount, the amount of the payment destination digital currency string is the payment amount, and the owner is identified as the payee.

The second sending module 604 is used for sending the payment destination digital currency string to the payee.

The change generation module 605 is used to generate a change digital currency string identified by the owner as the payment terminal according to the payment source digital currency string set and the payment amount, and the amount of the change digital currency string is the amount of the payment source digital currency string set The difference between the sum and the payment amount.

The third sending module 606 is used for sending the change digital currency string to the payment terminal.

The information recording module 607 is used to record the digital currency strings in the payment source digital currency string set, the payment destination digital currency string, the field information of the change digital currency string and other transaction details of digital currency conversion. The recorded information can be saved in the registration center set in the management terminal 600 .

The circulation system of the digital currency provided by the embodiment of the present invention is based on the digital currency string to realize the circulation of the digital currency, and the circulation method of the digital currency can meet the requirements of the actual currency circulation. In this method, the circulation of digital currency is represented by the conversion of digital currency strings. During the transaction process, the source currency string and the destination currency string can be clearly distinguished, and the source currency string and the destination currency string are associated through the transaction. , to solve the problem that the current circulation of virtual digital currency only has transactions without coins, and all digital currency string conversions must be carried out through the management-side digital currency system, and the source currency string is invalidated to generate a new destination currency string, thereby This enables monetary authorities to better monitor currency circulation. Moreover, through the combination of the information structure of the digital currency string and the circulation agreement and contract for the configuration of the digital currency string, the application of the digital currency is extremely scalable, and its role in currency circulation far exceeds that of the current currency. There is virtual currency.

The above specific implementation methods do not constitute a limitation to the protection scope of the present invention. It should be apparent to those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (14)

1. a kind of circulation method of digital cash, it is characterised in that including：

Payment end selects digital goods according to Payment Amount and predefined matching strategy from the digital cash safe deposit box at payment end Coin word string, then composition pays source digital cash word string collection, then payment source digital cash word string collection is sent into management End, the digital cash word string has：In amount field and owner's identification field, the digital cash safe deposit box at the payment end Deposit the digital cash word string for there are one or more owners to be designated payment end；

The digital cash word string for paying digital cash word string concentration of originating is registered as cancel status by management end, then basis The Payment Amount generation pays whereabouts digital cash word string, and the payment whereabouts digital cash word string is sent into gathering End, the amount of money for paying whereabouts digital cash word string is the Payment Amount, and the owner is designated gathering end.

2. according to the method described in claim 1, it is characterised in that

The matching strategy is minimum coin string strategy；

The payment end selects number according to Payment Amount and predefined matching strategy from the digital cash safe deposit box at payment end Word currency word string, the step of then composition pays source digital cash word string collection includes：

Digital cash word string in end digital cash safe deposit box of paying the bill is ranked up according to the amount of money is descending；

Digital cash word string and then combination are selected successively in the sequence, until the amount of money for the digital cash word string that combination is obtained Summation is more than or equal to the Payment Amount, and the digital cash word string for then obtaining the combination pays the digital goods in source as described Coin word string collection.

3. according to the method described in claim 1, it is characterised in that

The matching strategy is most coin string strategies；

The payment end selects number according to Payment Amount and predefined matching strategy from the digital cash safe deposit box at payment end Word currency word string, the step of then composition pays source digital cash word string collection includes：

Digital cash word string in end digital cash safe deposit box of paying the bill is ranked up according to the amount of money is ascending；

Digital cash word string and then combination are selected successively in the sequence, until the amount of money for the digital cash word string that combination is obtained Summation is more than or equal to the Payment Amount, and the digital cash word string for then obtaining the combination pays the digital goods in source as described Coin word string collection.

4. according to the method described in claim 1, it is characterised in that

The matching strategy is minimum difference strategy；

The payment end selects number according to Payment Amount and predefined matching strategy from the digital cash safe deposit box at payment end Word currency word string, the step of then composition pays source digital cash word string collection includes：

Amount of money summation in the digital cash safe deposit box is searched no less than in all digital cash word strings combination of Payment Amount The rope digital cash word string minimum with Payment Amount difference is combined pays digital cash word string collection of originating as described.

5. the method according to any one of Claims 1-4, it is characterised in that pay source numeral by described in management end The digital cash word string that currency word string is concentrated is registered as after cancel status, in addition to：

Management end is designated payment according to the payment source digital cash word string collection and the Payment Amount generation owner The small change digital cash word string at end, is then sent to payment end, the small change digital cash by the small change digital cash word string The amount of money of word string is the amount of money summation and the difference of the Payment Amount for paying source digital cash word string collection.

6. method according to claim 5, it is characterised in that also include：

The management end is to the digital cash word string paid in the digital cash word string collection of source, the digital goods of the payment whereabouts The field information of coin word string and the small change digital cash word string is recorded.

7. a kind of circulation device of digital cash, it is characterised in that including：

Currency selecting module, for selecting numeral from digital cash safe deposit box according to Payment Amount and predefined matching strategy Currency word string, then constitutes and pays source digital cash word string collection, and the digital cash word string has：Amount field and the owner The digital cash word for there are one or more owners to be designated payment end is deposited in identification field, the digital cash safe deposit box String；

First sending module, for the digital cash word string collection of originating that pays to be sent into management end, wherein, management end is by institute The digital cash word string for stating payment source digital cash word string concentration is registered as cancel status, is then given birth to according to the Payment Amount Gathering end is sent into payment whereabouts digital cash word string, and by the payment whereabouts digital cash word string, the payment is gone It is the Payment Amount to the amount of money of digital cash word string, the owner is designated gathering end.

8. device according to claim 7, it is characterised in that the currency selecting module is further used for end number of paying the bill Digital cash word string in word currency safe deposit box is ranked up according to the amount of money is descending, and numeral is selected successively in the sequence Currency word string and then combination, until the amount of money summation for the digital cash word string that combination is obtained is more than or equal to the Payment Amount, so The digital cash word string that the combination is obtained afterwards pays source digital cash word string collection as described.

9. device according to claim 7, it is characterised in that the currency selecting module is further used for end number of paying the bill Digital cash word string in word currency safe deposit box is ranked up according to the amount of money is ascending, and numeral is selected successively in the sequence Currency word string and then combination, until the amount of money summation for the digital cash word string that combination is obtained is more than or equal to the Payment Amount, so The digital cash word string that the combination is obtained afterwards pays source digital cash word string collection as described.

10. device according to claim 7, it is characterised in that the currency selecting module is further used in the number Amount of money summation in word currency safe deposit box is searched for and Payment Amount no less than in all digital cash word strings combination of Payment Amount The minimum digital cash word string combination of difference pays digital cash word string collection of originating as described.

11. a kind of circulation device of digital cash, it is characterised in that including：

Receiving module, for receiving the payment source digital cash word string collection that payment end is sent, wherein, payment end is according to payment gold Volume and predefined matching strategy select digital cash word string from the digital cash safe deposit box at payment end, and then composition, which is paid, comes Source digital cash word string collection, the digital cash word string has：Amount field and owner's identification field, the number at the payment end The digital cash word string for there are one or more owners to be designated payment end is deposited in word currency safe deposit box；

Calcellation Registration Module, for the digital cash word string for paying digital cash word string concentration of originating to be registered as into calcellation shape State；

Currency generation module, for paying whereabouts digital cash word string, the payment whereabouts number according to Payment Amount generation The amount of money of word currency word string is the Payment Amount, and the owner is designated gathering end；

Second sending module, for the payment whereabouts digital cash word string to be sent into gathering end.

12. device according to claim 11, it is characterised in that also include：Small change generation module and the 3rd sending module；

Small change generation module is used to pay originate digital cash word string collection and the Payment Amount generation owner according to described The small change digital cash word string at payment end is designated, the amount of money of the small change digital cash word string pays the digital goods in source to be described The amount of money summation of coin word string collection and the difference of the Payment Amount；

3rd sending module is used to the small change digital cash word string being sent to payment end.

13. device according to claim 12, it is characterised in that also include：Information logging modle, for being paid to described The digital goods of digital cash word string, the payment whereabouts digital cash word string and the small change originated in digital cash word string collection The field information of coin word string is recorded.

14. be stored with computer instruction, its feature in a kind of computer-readable recording medium, the computer-readable recording medium It is, the computer instruction can be run by computer or computer system, so that the computer or computer system energy Enough perform claims require the method any one of 1-6.