KR102616424B1 - waste metal resource transaction management system and method using the same - Google Patents

Abstract

The present invention provides a system for managing waste metal resource transactions based on blockchain. The system coordinates distribution transactions between suppliers, collectors, transporters and buyers. The first transaction contract is governed by the expression of intent of the supplier, collector, and transporter, and the second transaction contract governs the transaction between the supplier and buyer. The transaction contract management module creates transaction data blocks and issues tokens based on them. The hash value calculation module calculates the hash value of the transaction data block, and the transaction hash value is recorded in the blockchain network.
Additionally, when a collector or transporter provides waste metal resources to a supplier, the supplier's payment fee is calculated in a preset manner, and compensation corresponding to the payment fee is paid. The payment fee consists of a basic fee and a compensation fee, and is paid in preset cryptocurrency. The compensation fee calculates the supplier's generated revenue taking into account the first and second transaction contracts, and is calculated according to a preset method. The fee calculation module includes a compensation rate constant calculation part, which is set by considering the actual contract execution information of the collector and transporter. The compensation rate constant is set to set a larger compensation fee in proportion to the supplier's generated revenue, and is determined individually for collectors and transporters to manage waste metal resource transactions.

Description

Waste metal resource transaction management system and method using the same {waste metal resource transaction management system and method using the same}

The present invention is a waste metal resource transaction management system and a method using the same, and relates to a system for determining the distribution of fees to collectors and transporters who collect and provide waste metal to suppliers.

Recently, as recycling of metal resources has been emphasized, the importance of industries utilizing waste metal resources is increasing. For example, the Korean government recently stated that strategic resource management and flow analysis of rare metals are essential as a prerequisite for revitalizing the industry utilizing waste metal resources.

In addition, considering the status of scrap import and export, domestic metal resource circulation rate, etc., cobalt, molybdenum, titanium, tungsten, tin, gold, indium, gallium, silver, lead, vanadium, lithium, magnesium, chrome, zinc, aluminum, iron, and manganese. · A total of 20 metal resources, including platinum group and rare earth elements, have been designated as strategic management targets.

In general, waste metal resources are collected by collectors, such as small and medium-sized scrap dealers, metal extraction companies, etc. After a collector collects waste metal resources, the waste metal resources are passed through middlemen and suppliers who supply them to steel companies, and then the waste metal resources are either as is or processed and finally distributed to steel companies. At this time, waste metal resources are generally traded by weight, and when these waste metal resources are not accurately measured qualitatively and quantitatively, it is difficult to set an appropriate fee for these transactions, which sometimes leads to controversy.

In particular, most merchants who distribute waste metal resources to steel manufacturers, such as collectors, middlemen, and suppliers, who collect waste metal resources, are small businesses, and they systematically review forecast prices, handling costs, inventory values, etc., which have a sensitive impact on profits and losses. Since it is unilaterally dependent on the manager's experience in a state where it is not done, the problem of frequent losses occurring when trading waste metal resources occurs.

Therefore, in order to revitalize the industry utilizing waste metal resources, including waste metal resources, we objectively provide information on waste metal resources (market price forecast, profit and loss calculation, stock/delivery management, inventory management, etc.) and provide information to distributors in a highly reliable manner. The need for technology to transparently calculate/process fees is greatly increasing.

Korean Patent Publication No. 10-2002-0084880

The purpose of the present invention to solve the above problems is to propose a technology for providing reasonable compensation to collectors and transporters who support the industry of waste metal resources by transparently forming the distribution transaction of waste metal resources.

The technical challenges to be achieved in the various embodiments are not limited to the matters mentioned above, and other technical challenges not mentioned may be considered by those skilled in the art from the various embodiments described below. It can be.

In order to achieve the above purpose, it is a system that manages distribution transactions between suppliers, collectors (including intermediaries), transporters, and buyers of waste metal resources based on blockchain according to embodiments of the present invention, wherein the supplier , a transaction contract management module that manages the first transaction contract by merging the expressions of intent of at least two of the collector and the transporter, and manages the second transaction contract between the supplier and the purchaser, for the first and second transaction contracts. A transaction contract management module that generates first and second transaction data blocks and issues tokens based on the first and second transaction data blocks; A hash value calculation module that calculates hash values for the first and second transaction data blocks through a hash function; A blockchain network in which transaction hash values (TxHash) for tokens of the first and second transaction data blocks are accumulated and recorded; And when the collector or transporter supplies waste metal resources to the supplier, a fee calculation module that calculates the supplier's payment fee in a preset manner and provides compensation corresponding to the payment fee, wherein the payment fee is the basic It consists of a commission and a compensation fee and is paid in a preset cryptocurrency. The compensation fee is calculated by calculating the generated profit of the supplier in consideration of the first and second transaction contracts, and calculated in a preset manner based on the generated profit. A fee calculation module; It includes a fee calculation module, a compensation rate constant calculation unit that determines the compensation rate constant in a preset manner considering the actual contract performance information of the collector and transporter; It includes, and the compensation rate constant calculation unit is set to set the compensation fee larger in proportion to the generated revenue of the supplier, but applies the compensation rate constant calculated individually to the collector and transporter. Provides a waste metal resource transaction management system determined by:

In addition, the transaction contract management module includes: a first transaction contract management unit that manages the first transaction contract; and a second transaction contract management department that manages the second transaction contract; It includes the second transaction contract management unit, when concluding the second transaction contract, information about the first transaction contract is set to private to the buyer, and information about the second transaction contract is set to private to the collector and transporter. As information is disclosed through the blockchain network, transaction information for the first waste metal resource provided by the collector and the second waste metal resource provided by the transporter can be tracked.

In addition, the fee calculation module includes a compensation fee calculation unit that independently calculates the compensation fee of the collector and transporter; It further includes, wherein the compensation fee calculation unit, when the waste metal resource included in the second transaction contract consists of at least two or more first transaction contracts, independently calculates a basic fee and a compensation fee for each of the first transaction contracts. It can be configured to calculate.

In addition, the fee calculation module includes a supplier profit calculation unit that calculates the expected revenue generated through the second transaction contract when entering into a second transaction contract based on the first transaction contract; It includes, wherein the compensation fee calculation unit calculates the compensation fee based on the difference between the supplier's generated profit generated through the second transaction contract and the maximum expected profit calculated by a formula preset through the supplier profit calculation unit. can do.

In addition, if the waste metal resources included in the second transaction contract include waste metal resources provided by the first to nth collectors and the first to mth transporters, the compensation rate constant for each of the collectors and transporters By calculating independently, the compensation fee for the collector and transporter is calculated individually, and the compensation fee can be paid within the generated revenue of the supplier.

In addition, the waste metal resource transaction management system includes a bid management module that induces competitive bidding by the collector and transporter so that at least one first transaction contract is concluded when the second transaction contract is concluded first; Further comprising, the bid management module calculates waste metal resource demand information based on the supplier's current inventory information and the second transaction contract, and the waste metal resource demand information is provided to the collector and transporter. It may include the required weight, required period, and standard amount per unit weight of waste metal resources.

In addition, the bid management module includes a transaction quantity determination unit linked to the first and second transaction contract management units; It further includes, wherein the transaction quantity determination unit calculates the supply quantity of the first to nth collectors based on the required weight of waste metal resources determined by the buyer, the standard price per unit weight, and the total purchase price, The supply quantity ratio can be determined by applying the compensation rate constant calculated in advance individually for each of the first to nth collectors.

Meanwhile, the present invention is a method using the above-described waste metal resource transaction management system, and (a) a first transaction contract is concluded through the agreement of the expressions of intent of at least two of the supplier, collector, and transporter by the transaction contract management module. and a second transaction contract is concluded between the supplier and the buyer; (b) By the second transaction contract management department, when concluding the second transaction contract, the information about the first transaction contract is set private to the buyer, and the information about the second transaction contract is set to private to the collector and transporter. By being released through the blockchain network, transaction information on the first waste metal resource provided by the collector and the second waste metal resource provided by the transporter is tracked; (c) A step in which the compensation rate constant of the collector or transporter who is a party to the first transaction contract is determined by the compensation rate constant calculation unit, where the second transaction contract includes at least two or more first transaction contracts, Computation rate constants of all collectors and transporters included in the second transaction contract are calculated proportionally; and (d) a step in which the fees of the collector and the transporter are independently calculated by the compensation fee calculation unit, wherein the fee consists of a basic fee and a compensation fee, and the compensation fee is the compensation calculated in step (c). A rate constant is applied to determine the fees of the collector and transporter; Provides a method including.

The present invention makes it possible to provide reasonable compensation to collectors and transporters who support the industry of waste metal resources by transparently forming the distribution transaction of waste metal resources. In addition, through such reasonable compensation, a more sound commerce order for waste metal resources can be established and trade can be revitalized.

The effects that can be obtained from various embodiments are not limited to the effects mentioned above, and other effects not mentioned are clearly derived to those skilled in the art based on the detailed description below. It can be understood.

The above-described and other aspects, features and benefits of certain preferred embodiments of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.
1 is a conceptual diagram of a system according to an embodiment of the present invention.
Figure 2 is a conceptual diagram showing the concept of how a system according to an embodiment of the present invention is linked to a blockchain network.
Figure 3 is an overall configuration diagram of a system according to an embodiment of the present invention.
Figure 4 is a schematic diagram schematically explaining the process for calculating the basic fee and compensation fee in the system according to an embodiment of the present invention.
Figure 5 is a block diagram schematically showing the process of paying a compensation fee to a plurality of collectors in a system according to an embodiment of the present invention.
Figure 6 is a block diagram schematically showing the process of calculating compensation fees when a supplier provides competitive bidding from a collector or transporter in a system according to an embodiment of the present invention.
Figure 7 is a flowchart of a method using a system according to an embodiment of the present invention.
It should be noted that throughout the drawings, like reference numerals are used to illustrate identical or similar elements, features and structures.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components.

Terms such as first, second, A, B, etc. may be used to describe various components, but the components should not be limited by the terms. Terms are used only to distinguish one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term “and/or” includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, a system according to an embodiment of the present invention will be described with reference to the drawings.

Figure 1 is a conceptual diagram of a system according to an embodiment of the present invention, and Figure 2 is a conceptual diagram showing the concept of a system according to an embodiment of the present invention interoperating with a blockchain network.

This will be explained with reference to FIGS. 1 and 2.

The waste metal resource transaction management system of the present invention is based on the blockchain network 140 and can provide reliable information to all transaction participants. 'Waste metal resources' referred to herein refers to metals remaining after use by steel manufacturing companies, metal and machinery companies, etc., and may be waste metals such as iron scrap, scrap iron, stainless steel, and copper.

In this application, the 'supplier' can be understood as the entity that enters into a contract with the 'buyer' for the supply of waste metal resources. Here, the 'buyer' can be understood as a steel company in need of waste metal resources, and can be interpreted to mean the final buyer. Our suppliers may be called collectors, middlemen, or suppliers. They are merchants who collect, sort, and process waste metals and distribute them back to steel manufacturers. They can be seen as a metal resource recycling company, a company that encourages recycling of waste metal resources.

A 'collector' refers to a person who directly or indirectly collects waste metal resources and delivers them to a 'supplier'. Supplier and collector are distinct concepts depending on who enters into a contract with the buyer. In other words, the collector does not enter into a contract directly with the buyer. If a supplier can collect waste metal resources directly and enters into a contract directly with the buyer, the above supplier is not classified as a collector.

‘Transporter’ means a person who transports waste metal resources from a collector to a supplier, or from a supplier to a buyer. Here, the 'transporter' performs the task of transportation and was introduced to calculate the payment for transportation costs. In practice, since the collector can also perform the role of a transporter at the same time, the collector and the transporter are separate entities. It does not need to be set to . Although not specifically specified herein, the term 'custodian' may be additionally introduced, and the custodian refers to a person who stores waste metal resources according to preset conditions by operating a yard, etc. Of course, a single entity can carry out all storage, transportation, and sales.

Figure 3 is an overall configuration diagram of a system according to an embodiment of the present invention. A system according to an embodiment of the present invention will be described with reference to FIG. 3.

The present invention largely includes a transaction contract management module (110), a fee calculation module (120), a bid management module (130), a blockchain network (140), a party account module (150), and a hash value calculation module (160). .

The transaction contract management module 110 includes a first transaction management unit 111 and a second transaction contract management unit 112.

The first transaction contract management department 111 is configured to manage transactions between supplier-collector, supplier-transporter, collector-transporter, collector-collector, etc., and these transactions are collectively referred to as 'first transaction contract'. . Transactions between parties other than the buyer can be classified as a first transaction contract. When a collector signs a supply contract for waste metal resources a with a supplier, multiple conditions that require a contract may be required, such as storage conditions, transportation conditions, cost conditions, and period conditions. These may be concluded collectively at once (or simultaneously), but may also be concluded for each individually.

The second transaction contract management unit 112 is configured to manage transactions between suppliers and buyers, and these transactions are classified as 'second transaction contracts'. Transactions between suppliers and buyers are structured to be carried out based on predetermined items. It is desirable that individual items that are the subject of a contract are set so that suppliers and buyers can select them.

The system according to the present invention is based on a blockchain network and includes a hash value calculation module 160 and a blockchain network 140 as essential components. Information about the first transaction contract and the second transaction contract can be stored in the transaction data block and made on-chain in the blockchain network.

Here, the blockchain configuration applied herein includes all known methods, and the widely known Smart Contract method can be applied. Through this, it is possible to implement existing written contracts into computer code and automatically execute the contract when certain conditions are met. Representative functions include token issuance and transfer. And because all of these are implemented on the blockchain, they have coercion and transparency, and can be executed through a DApp (Decentralized Application) that can leverage these characteristics to assert the reliability of the system on the blockchain.

NFT (Non-Fungible Token) based on ERC-721, the 'Ethereum standard' often referred to as 'non-fungible', may be applied, and FT, a 'fungible token' adopted as ERC-20, is another method. (Fungible Token) may be applied.

The transaction contract management module 110 creates a unique transaction data block for the transaction contract. At this time, the transaction data block contains identification information about the information that is the subject of the transaction contract.

A token based on the transaction data block is issued, and the transaction hash value (TxHash) is accumulated and recorded in the blockchain network 140. In other words, for a specific transaction contract, it is stored in blocks containing a collection of transactions, and these can be sequentially connected in time series order.

The transaction data block is composed of a number of serial blocks, and is structured in such a way that the current block verifies the trust connection to the previous block by storing the hash value of the previous block's data in the header of the current block. At this time, as described above, inventory management in the yard can be automatically performed using the smart contract function. In this application, for conceptual distinction, the transaction data block for the first transaction contract is distinguished as the first transaction data block, and the transaction data block for the second transaction contract is distinguished as the second transaction data block.

The present invention includes a party account module (150). The party account module 150 may refer to a personal account individually assigned to each supplier, collector, transporter, and purchaser. The party account module 150 can be set to log in in a preset manner, and by providing not only personal information (or corporate information) but also an electronic wallet, payment can be processed automatically even without separate payment between the parties. It can be. Of course, such payment processing information can also be set to be recorded in individual transaction data blocks through the blockchain network 140, providing high transparency and reliability to users of the system according to the present invention.

The party account module 150 can manage the stock amount by type of waste metal resource and the stock amount by yard according to the input/output information of waste metal resources stored in the server database and the amount of waste metal resources purchased and sold. . Due to the nature of the user's industry, warehousing management is based on vehicle transportation of the transaction weight of purchase/sale transaction information, taking into account the business process of processing payment based on the metal weight received at my yard or warehoused at the other party's yard, rather than the entire transaction. It can be divided into units and stored in the server database, and items can be classified by vehicle number.

The fee calculation module 120 includes a compensation fee calculation unit 121, a supplier profit calculation unit 122, a compensation rate constant calculation unit 123, and a basic fee calculation unit 124.

The fee calculation module 120 is basically configured to receive information on the first and second transaction contracts and calculate the supplier's generated profit through this. The present invention is structured to compensate the collector and/or transporter with an additional fee based on the supplier's generated revenue. The above additional fees are collectively referred to as ‘compensation fees’.

Since transparency and reliability are maximized in a system based on the blockchain network 140, it is designed to use these characteristics to pay compensation fees to collectors and/or transporters.

The supplier's actual profit is a concept that is distinct from the value calculated through the supplier profit calculation unit 122. The supplier profit calculation unit 122 is set to calculate the supplier's expected maximum profit according to a preset formula.

The input and output information of waste metal resources pre-stored in the party account module 150 is used, and a formula is used that models the transaction, using total profit as the objective function and specific conditions according to the transaction as the constraint function. The profit and loss between transactions is reviewed by calculating the maximum total profit generated when trading waste metal resources (meaning the second transaction contract) through the input and output information of waste metal resources stored in the party account module 150. This is the simulation stage for reviewing transaction profits and losses. In other words, it is possible to review conditions for optimizing transaction profits and losses based on various variables such as customer, transaction location, yard, type of metal, unit price, quantity, surplus funds, transportation cost, other costs, and labor cost.

At this time, the formula (Equation 1 below) with total profit (TP) as the objective function and the specific conditions for the transaction as the constraint function is entered into the management science formula solution system and the optimal value of each variable that maximizes the total profit is entered. The value (optimal solution of the constraint function) can be returned and provided to the user of the system. Users may trade under the same conditions as the optimal price, but this may vary depending on consultation with the buyer, the counterparty to the transaction.

delete

[Equation 1]

The supplier profit calculation unit 122 can calculate the supplier's expected maximum profit based on Equation 1. However, since this is a theoretical value calculated by a formula, it may be different from the actual value. The actual value refers to the contents of the second transaction contract.

For reference, in Equation 1 above, j: company classification, i: metal classification, TP: total profit, W: transaction weight, UP: unit profit, US: sales unit price, UB: purchase unit price, UC: unit cost, DL: unit transportation distance, CPD: unit cost per unit transportation distance, LC: unit transportation cost, PC: unit process cost, MC: unit labor cost.

The system according to an embodiment of the present invention calculates the compensation fee according to a preset method when the actual value exceeds the theoretical value, but calculates the compensation fee of the collector and/or transporter by individually considering the compensation rate constant. It is configured to configure.

The above theoretical value refers to the maximum value of accrued profit that the buyer can take at the time of the second transaction contract, and if the actual value exceeds the above theoretical value, a sound transaction order and To facilitate transactions, it is designed with the concept of providing partial compensation to the collector and/or transporter.

Figure 4 is a schematic diagram schematically explaining the process for calculating the basic fee and compensation fee in the system according to an embodiment of the present invention. This will be explained with reference to FIG. 4 .

The basic fee calculation unit 124 is configured to calculate the basic fee paid to the collector and/or transporter.

The basic fee is calculated based on the items of the first transaction contract, regardless of the second transaction contract. For example, in the case of a transporter, it is desirable to set and pay the normal cost considering the quantity, weight, period, etc. of waste metal resources included in the first transaction contract. In normal cases, the basic fee can be paid upon completion of the first transaction contract.

The order of the first and second transaction contracts is not set, but can be divided into cases where ① the first transaction contract precedes the second transaction contract, and ② the second transaction contract precedes the first transaction contract.

In most cases, the first transaction contract precedes the second transaction contract, so the compensation fee can be set later. However, if there are multiple collectors and/or transporters included in the first transaction contract, the waste metal resource information collected and/or transported by them is transparently managed through the blockchain network 140, so the compensation fee is also charged. It can be paid transparently. In other words, this means that part of the profits generated by waste metal resources handled by the collector and/or transporter are paid back to the collector and/or transporter.

The compensation rate constant calculation unit 121 is configured to determine the compensation rate constant in a preset manner by considering the actual contract performance information of the collector and transporter. As an example, the compensation rate constant means that the rating of the collector and/or transporter is performed.

It can be calculated in a preset manner through a number of first transaction contracts concluded by the collector and/or transporter. As parameters, the compensation rate constant can be considered by considering whether the waste metal resource quantity information is satisfied, waste metal resource delivery/transportation contract compliance, accessibility to the supplier, and the rating value of the collector (including the transporter).

Collectors and/or transporters can be given the opportunity to continuously strive to increase the compensation rate constant, and greater incentives can be provided to highly trustworthy entities. The difference between the above-mentioned supplier's generated profit and the maximum expected profit calculated through the supplier profit calculation unit 122 is not directly set as a compensation fee, and the contribution of the collector and/or transporter to the occurrence of the above difference, compensation rate constant The compensation fee can be set taking all of these into consideration.

Figure 5 is a block diagram schematically showing the process of paying a compensation fee to a plurality of collectors in a system according to an embodiment of the present invention. This will be explained further with reference to FIG. 5 . The waste metal resources included in the second transaction contract may include waste metal resources provided by the first to nth collectors and the first to mth transporters.

At this time, the compensation rate constant for each collector and transporter is calculated independently, so that the compensation fee for the collector and transporter is calculated individually, and the total compensation fee is paid within the supplier's generated profit (actual generated profit). It is designed.

A compensation fee can be calculated for each of collectors 1 to 4 in FIG. 5. At this time, the compensation fee may be set at 0 for certain collectors. As described above, the compensation fee calculation can be calculated by considering the grade, quantity, storage information, unit price information, etc. of waste metal resources. By additionally applying the compensation rate constant to the above contribution, the final compensation fee can be calculated.

Figure 6 is a block diagram schematically showing the process of calculating compensation fees when a supplier provides competitive bidding from a collector or transporter in a system according to an embodiment of the present invention.

Referring to Figure 6, the system according to the present invention further includes a bid management module 130. The bid management module 130 includes a demand information calculation unit 131 and a transaction quantity determination unit 132. These are very efficient when the second transaction contract is concluded before the first transaction contract.

Through the demand information calculation unit 131, it is configured to calculate demand information by considering the current supplier's yard information/inventory information, etc., and determine their ratio in competitive bidding by collectors and transporters.

The transaction quantity determination unit 132 is linked with the first and second transaction contract management units 111 and 112, and based on the required weight of waste metal resources determined by the purchaser, the standard price per unit weight, and the total purchase amount, It is configured to calculate the supply quantity of the 1st to nth collectors.

At this time, the supply quantity ratio can be determined by applying the compensation rate constant calculated in advance individually for each of the first to nth collectors. In other words, when there are multiple collectors, it can be understood as a method of concluding a first transaction contract with them using the compensation rate constant, rather than selecting just one of them. Simply put, when the compensation rate constant is large, it is a method that can provide a larger volume supply.

Figure 7 is a flowchart of a method using a system according to an embodiment of the present invention.

The method according to the present invention includes steps S110 to S140.

In step S110, a first transaction contract is concluded by the transaction contract management module 110 through the merger of the expressions of intent of at least two of the supplier, collector, and transporter, and a second transaction contract is concluded between the supplier and the buyer. It's a step.

In step S120, when the second transaction contract is concluded by the second transaction contract management unit 112, the information about the first transaction contract is set to private to the buyer, and the second transaction contract is set to private to the collector and transporter. This is a step in which transaction information about the first waste metal resource provided by the collector and the second waste metal resource provided by the transporter is tracked by the information being disclosed through the blockchain network.

Step S130 is a step in which the compensation rate constant of the collector or transporter who is a party to the first transaction contract is determined by the compensation rate constant calculation unit 123, and the second transaction contract includes at least two or more first transaction contracts. In this case, this is the step where the compensation rate constants of all collectors and transporters included in the second transaction contract are calculated proportionally.

Step S140 is a step in which the fees of the collector and the transporter are independently calculated by the compensation fee calculation unit 121. The fee consists of a basic fee and a compensation fee, and the compensation fee is the compensation rate calculated in step S130. This is the stage where the fees of the collector and transporter are determined by applying a constant.

The system according to the present invention can be linked with a user terminal and provide information about the current system operation and environment to the user terminal. Additionally, the system's computational processing can be performed on a separate server.

User terminals capable of communication include desktop computers, laptop computers, laptops, smart phones, tablet PCs, mobile phones, and smart watches. ), smart glass, e-book reader, PMP (portable multimedia player), portable game console, navigation device, digital camera, DMB (digital multimedia broadcasting) player, digital voice recorder (digital) It may include an audio recorder, a digital audio player, a digital video recorder, a digital video player, a PDA (Personal Digital Assistant), etc.

The preferred embodiments of the present invention described above may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. Computer-readable media may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on a computer-readable medium may be specially designed and constructed for the present invention or may be known and usable by those skilled in the computer software art.

Examples of computer-readable media may include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions may include machine language code such as that created by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. The above-described hardware device may be configured to operate with at least one software module to perform the operations of the present invention, and vice versa.

Additionally, the above-described method or device may be implemented by combining all or part of its components or functions, or may be implemented separately.

Although the present invention has been described above with reference to preferred embodiments, those skilled in the art may make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can do it.

110: Transaction contract management module
120: Fee calculation module 130: Bidding management module
140: Blockchain network 150: Party account module
160: Hash value calculation module

Claims (5)

A system that manages distribution transactions between suppliers, collectors (including intermediaries), transporters, and buyers of waste metal resources based on blockchain,
A transaction contract management module that manages a first transaction contract by merging the expressions of intent of at least two of the supplier, collector, and transporter, and manages a second transaction contract between the supplier and the buyer, wherein the first and second transaction contracts A transaction contract management module that generates first and second transaction data blocks for and issues tokens based on the first and second transaction data blocks;
A hash value calculation module that calculates hash values for the first and second transaction data blocks through a hash function;
A blockchain network in which transaction hash values (TxHash) for tokens of the first and second transaction data blocks are accumulated and recorded; and
When the collector or transporter supplies waste metal resources to the supplier, a fee calculation module calculates the supplier's payment fee in a preset manner and provides compensation corresponding to the payment fee, wherein the payment fee is the basic fee. It consists of a compensation fee and is paid in pre-set cryptocurrency,
A fee calculation module, wherein the compensation fee is calculated in consideration of the first and second transaction contracts and the generated profit of the supplier, and calculated in a preset manner based on the generated profit; Includes,
The fee calculation module is,
a compensation rate constant calculation unit that determines a compensation rate constant in a preset manner considering the actual contract performance information of the collector and transporter; Including,
The compensation rate constant calculation unit,
The compensation fee is set to be larger in proportion to the generated revenue of the supplier, and is determined by applying compensation rate constants calculated individually to the collector and transporter,
The above transaction contract management module:
a first transaction contract management department that manages the first transaction contract; and
a second transaction contract management department that manages the second transaction contract; Includes,
The second transaction contract management department,
When concluding the second transaction contract, the information about the first transaction contract is made private to the buyer, and the information about the second transaction contract is made public to the collector and transporter through the blockchain network, A waste metal resource transaction management system in which transaction information for a first waste metal resource provided by a collector and a second waste metal resource provided by the transporter is tracked. delete delete delete delete

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