KR102150691B1 - Automatic goods pricing method and system using blockchain oracle technique - Google Patents

Abstract

The present invention relates to an automatic goods pricing method and an automatic goods pricing system using a blockchain oracle technique. The method includes: a step of creating a service contract defining conditions and exercise action related to a seller′s service; a step in which information on an article is registered in a blockchain distributed ledger; a step in which an article amount is remitted to the service contract by a buyer who requested article purchase; a step of reading the information on the article at delivery start and delivery completion through an oracle device of a deliverer delivering the article, generating a blockchain transaction related to delivery start and delivery completion, and transferring it to an oracle contract; a step in which the oracle contract transfers the blockchain transaction to the service contract; and a step in which condition-result comparison is performed in the service contract based on the blockchain transaction information and exercise action matching the conditions is confirmed and executed. The exercise action may include remittance to the seller with respect to a part or the whole of the article amount.

Description

Automatic goods pricing method and system using blockchain oracle technique}

The present invention relates to a method and system for automatically setting product prices using blockchain oracle technology.

In the current product purchase method, the buyer pays the price for the product first, and only after receiving the product, the buyer can receive a refund or receive compensation through a complaint.

In addition, the price of the product to be purchased cannot be automatically changed to suit the condition of the product, so that the purchase is possible only at a determined price.

Korean Patent Laid-Open Patent No. 10-2013-0037256 (published on April 16, 2013)-Price calculation method for each delivery period and online trading method

The present invention is a blockchain in which a new price is automatically set and settled according to the state (condition) of the product using blockchain oracle technology when a buyer deposits an amount in the contract using the smart contract technology of the blockchain. It is to provide a method and system for automatic commodity pricing using Oracle technology.

Other objects of the present invention will become more apparent through preferred embodiments described below.

According to an aspect of the present invention, there is provided a method for automatically pricing a product using a blockchain oracle technology, comprising the steps of: creating a service contract defining conditions and actions to be performed related to a seller's service; Registering information on the goods in the blockchain distributed ledger; Remittance of the product amount to the service contract by a purchaser who has applied for product purchase; Reading information on the goods at the beginning of delivery and upon completion of delivery through an oracle device of the deliverer who delivers the goods, creating a block chain transaction for starting and completing delivery, and transmitting it to an Oracle contract; Transmitting, by the Oracle contract, a block chain transaction related to the delivery start and delivery completion to the service contract; The service contract includes the step of comparing a condition and a result based on the information of the block chain transaction to check and perform an action action that meets the condition, wherein the action action includes a partial or total amount of the item to the seller. A method for automatically pricing products using blockchain oracle technology, characterized in that remittance is included, is provided.

In the step of transferring the product amount to the service contract, the service contract may convert the product amount into a locked state, and in the step of performing the execution action, the product amount may be converted into an unlocked state.

The delivery start blockchain transaction includes information on the item, location information of the Oracle device at the start of delivery, and delivery start time information, and the delivery completion blockchain transaction includes information about the item and the Oracle device at delivery completion. Location information and delivery completion time information may be included.

In the service contract, a first delivery completion condition checked by a delivery person related to delivery completion and a second delivery completion condition checked by a purchaser are defined, and as the execution action, the amount of the goods when the first delivery completion condition is satisfied. Part of it may be remitted to the seller, and when the second delivery completion condition is satisfied, the rest of the amount of the product may be remitted to the seller.

When the second delivery completion condition is satisfied and the purchaser uploads the unboxing video, the corresponding action may apply a predetermined discount.

In the service contract, when delivery is completed within a predetermined period in relation to the delivery period, an action action for setting 100% of the purchase price as the product price may be defined.

The information on the product is provided in the form of a QR code or a bar code at the time when delivery of the product is started, and the Oracle device may obtain information on the product through an imaging device or a barcode reader.

Meanwhile, according to another aspect of the present invention, there is provided an oracle device used in a product price automatic pricing system using a blockchain oracle technology, comprising: an article information acquisition unit for acquiring information on an article delivered by a delivery person; A device information providing unit that provides information on the device at the time of starting and completing the delivery; In a secure environment, it includes an Oracle client that creates a block chain transaction including information on the product and information on the device and processes the signature with a private key stored in a key store, and transmits the block chain transaction to an Oracle contract to An oracle device is provided, characterized in that it is delivered to a service contract registered by a seller of

The information on the device may include location information of the Oracle device and a delivery start time or delivery completion time.

The oracle client may include a transaction generation module that generates the blockchain transaction and a signature processing module that performs signature processing.

The block chain transaction generated by the transaction creation module includes basic information data required by the block chain in which the Oracle contract is serviced, and information data required by the service contract, and the transaction creation module is included in the blockchain transaction. A hash of the generated data is generated, and the signature processing module may provide integrity by signing the hash with the private key using the SIGN function of the blockchain in which the Oracle contract is serviced.

Other aspects, features, and advantages other than those described above will become apparent from the following drawings, claims, and detailed description of the invention.

According to an embodiment of the present invention, when a buyer deposits an amount in a contract using the smart contract technology of the blockchain, the price of the product is automatically set according to the state (condition) of the product using the blockchain oracle technology. It has the effect of being settled.

1 is a configuration diagram of an automatic product price pricing system using a blockchain oracle technology according to an embodiment of the present invention;
2 is an example diagram of a corresponding table of conditions defined in a service contract and actions to be performed;
3 is a block diagram of an Oracle device;
4 is a flow chart of a method for automatically pricing a product using a blockchain oracle technology according to an embodiment of the present invention;
5 is a block diagram showing a configuration of a purchaser device.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

In addition, components of the embodiments described with reference to each drawing are not limited to the corresponding embodiments, and may be implemented to be included in other embodiments within the scope of the technical spirit of the present invention. Even if the description is omitted, it is natural that a plurality of embodiments may be implemented again as a unified embodiment.

In addition, in the description with reference to the accompanying drawings, the same or related reference numerals are assigned to the same components regardless of the reference numerals, and redundant descriptions thereof will be omitted. In describing the present invention, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

1 is a configuration diagram of an automatic product price pricing system using blockchain oracle technology according to an embodiment of the present invention, FIG. 2 is an exemplary diagram of a corresponding table of conditions and actions defined in a service contract, and FIG. 3 is an Oracle This is a block diagram of the device.

Referring to Figure 1, the automatic product price pricing system 100 according to an embodiment of the present invention includes a seller 110, a buyer 120, a service contract 140, a delivery person 130, and an Oracle device 131. , Oracle contract 150, etc. can participate as participants.

The seller 110 is a person who sells goods (products) or an online market (market platform). The seller 110 provides information on the item to be sold. The product information may exist in various forms in which information can be read by an identification code such as a QR code or a barcode, or a separate device (Oracle device 131).

The buyer 120 is a person who purchases goods.

The service contract 140 is a contract in which conditions related to delivery and compensation for goods sold by the seller 110 are set, and is a part of the blockchain system. When the service contract 140 receives information from the Oracle contract 150, the service contract 140 automatically performs a condition meeting the information.

The delivery person 130 is a person who delivers the goods. The delivery person 130 is in possession of the Oracle device 131, and collects the status information of the product with the Oracle device 131 at a predetermined time during the delivery process (e.g., delivery start time, delivery completion time), and block chain A transaction (TX) is created and transmitted to the Oracle contract 150. The Oracle device 131 may be equipped with a trusted execution environment (TEE) or secure element (SE) to protect the collected information.

The Oracle contract 150 serves to deliver the information received from the Oracle device 131 to the service contract 140.

The following can be set before delivery of goods begins.

The service contract 140 of the seller 110 defines conditions related to a service (eg, delivery) to be provided, and an action performed according to each condition.

According to the conditions defined by the seller 110, the price of the product may fluctuate. Referring to FIG. 2A, conditions related to delivery of goods defined in the service contract 140 are illustrated.

Regarding the completion of delivery of the goods, there are a delivery completion condition checked by the sender (deliverer) and a delivery completion condition checked by the purchaser. When the delivery completion condition checked by the deliverer is satisfied, the action to be performed may be to remit N% (eg, 70%) of the deposit to the seller.

When the delivery completion condition checked by the buyer is satisfied, the action to be performed may be to remit the remaining amount ((100-N)%) (eg, 30%) to the seller. Additionally, if a buyer uploads an unboxed video, a pre-designated discount (m% discount) may be applied.

In relation to the delivery period of the goods, when delivery is completed within K (random natural number) days, the action to be performed may be to set 100% of the purchase price.

When delivery is completed after the K day, the action to be performed may be to increase the discount width for the product, such as a 5% discount when it exceeds 1 day from the K day, and a 10% discount when it exceeds 2 days.

In the definition of the conditions of the service contract 140, various conditions related to the freshness of the goods may also be added.

Referring to (b) of FIG. 2, in the case of products whose freshness is important, such as milk and tofu, delivery conditions may be defined on the same day and after 1 day.

If same-day delivery is satisfied, the action to be performed may be to set 100% of the purchase price. When same-day delivery is not satisfied, that is, when delivery is made after one day, the discount width for the corresponding product may be increased according to the number of excess days. In addition, a return/exchange or a refund action may be applied.

The seller 110 may register (record) the product to be sold on the blockchain. In addition, the Oracle device 131 creates a file in the form of an identification code (for example, a QR code, a barcode, etc.) for the product so that the product information can be read or tracked and managed, and provided at the time of the delivery Can give.

The information context of the item to be delivered may include one or more of a production location, a production date, a description of the item, delivery information, delivery schedule, customer information, purchase history, and other items.

It is assumed that a product to be sold by the seller 110 is registered in the blockchain, and a service contract 140 is created by the seller 110.

When there is a buyer 120 who wants the item, the seller 110 and the buyer 120 are connected so that the buyer 120 can purchase the item that the seller 110 wants to sell (①).

The goods purchased by the buyer 120 are started to be delivered through the delivery person 130 (②).

The delivery person 130 records the state of the goods at the start of delivery through the possessed oracle device 131 (③). And, even when delivery is completed by handing over the goods to the buyer 120, the status of the goods is recorded (④).

The delivery status record including the product status recorded by the Oracle device 131 is transmitted to the service contract 140 through the Oracle contract 150 (⑤)

When the goods are delivered to the buyer 120, the service contract 140 automatically performs an action corresponding to the condition upon completion of delivery (⑥). For example, there may be discount pricing.

When the purchaser 120 confirms receipt of the product through the purchaser device, it is recorded in the Oracle contract 150 (⑦). Confirmation of receipt of goods may include approval or uploading of unboxed video.

The Oracle contract 150 transmits the purchaser record to the service contract 140 (⑧).

The service contract 140 automatically performs an action corresponding to the condition upon confirmation of receipt of the purchaser according to the purchaser record (⑨). For example, there may be discount pricing.

Referring to FIG. 3, the configuration of the delivery's oracle device 131 is shown.

The oracle device 131 used by the delivery person 130 is a device that can read information and send the information to the blockchain network. The information collected by the Oracle device 131 may require security, and for this purpose, the Oracle device 131 is secured based on software or hardware such as a Trusted Execution Environment (TEE) and Secure Element (SE). It may be a device equipped with technology.

The Oracle device 131 reads the information file of the delivery product provided by the seller and stores information on the product. To this end, the oracle device 131 may be provided with an article information acquisition unit 1315. The article information acquisition unit 1315 may be an imaging device such as a camera or a barcode reader. Alternatively, the article information acquisition unit 1315 may have a user input unit such as a touch screen or a keypad, and thus may directly receive article information.

An Oracle client 1311 is mounted in a security environment (eg, TEE, SE, etc.) provided in the Oracle device 131. The Oracle client 1311 may include a transaction generating module 1312 and a signature processing module 1313.

The transaction creation module 1312 protects information from being forged and altered when creating a blockchain transaction.

The signature processing module 1313 performs signature processing on a blockchain transaction using a private key (an Oracle client's signature key) required for signature securely stored in the key store 1314.

The generated blockchain transaction may include not only product information, but also location (coordinate information) and time information provided by the device information providing unit 1316 of the oracle device 131. To this end, the oracle device 131 may be provided with a location and time information acquisition module that acquires location and time information.

The location and time information used to track the location of the item in the delivery process is important information for determining whether the delivery condition is satisfied by the service contract 140 upon completion of delivery, and thus needs to be essentially protected.

Transactions generated by the Oracle client 1311, particularly the transaction creation module 1312, are as follows.

TX = Block Chain Required Data || Information Data || S

Here, TX is composed of data that can change the status information of the Oracle contract. Block Chain Required Data is basic information data required by the blockchain in which the Oracle contract 150 is serviced. Information Data is information data requested by the service contract 140.

The transaction generation module 1312 generates a hash of data included in the transaction.

H = HASH func(Block Chain Required Data || Information Data)

HASH func is data generated through TX's one-way hash algorithm.

When transmitting the generated transaction to the blockchain, the Oracle client 1311, in particular, the signature processing module 1313 generates a signature with a private key.

S = SIGN func(H, Key)

The SIGN func uses the SIGN function of the blockchain serviced by the Oracle contract 150. Key is the private key of the Oracle client 1311.

When it is necessary to provide detailed information according to the service method, a detailed information data set including Information Data Hash (=H2) can be configured in the contract owner's service server.

According to the product price automatic pricing system 100 according to the present embodiment, by registering the product information purchased by the purchaser 120 in the blockchain, the state from the time the product is purchased to the time the product is delivered to the purchaser is completed. Can be recorded. The conditions set by the seller 110 are registered in the blockchain service contract 140, and the contract can be automatically executed by receiving data from the external oracle device 131. The Oracle device 131 collects status information corresponding to the product to be shipped, and generates the information collected from the loaded blockchain wallet as a blockchain transaction, calculates a hash, and provides integrity through signature. have. The blockchain service contract 140 may be automatically executed when the received state information satisfies a set contract condition.

4 is a flowchart of a method for automatically pricing a product using a blockchain oracle technology according to an embodiment of the present invention, and FIG. 5 is a block diagram of a configuration of a purchaser device.

The automatic product price pricing method illustrated in FIG. 4 may be performed by each component of the automatic product price pricing system.

The seller 110 creates a service contract 140 by defining conditions related to the service to be provided (step S200). In the present embodiment, for convenience of understanding and explanation of the invention, it is assumed that conditions related to delivery and a service according to the conditions are provided.

The seller 110 creates information on the item to be sold and registers it in the blockchain distributed ledger (step S202). The seller 110 may start selling by registering the product to be sold in the online market.

The purchaser 120 may apply for a product purchase in the online market and transfer the amount of the product to the service contract 140 using a blockchain wallet (step S204).

The service contract 140 converts the amount received from the purchaser 120 into a locked state (deposit LOCK) and binds the asset so that it cannot be moved (step S206). The deposit will be converted to an unlocked (UNLOCK) state when delivery is complete.

The seller 110 delivers the product to the delivery person 130, and delivers the product information file (eg, identification code such as a QR code or a barcode) created by the seller 110 along with the product (step S208).

The delivery person reads the information of the delivery product to the Oracle device 131 while starting delivery of the product (step S210). Then, a block chain transaction for the start of delivery is generated, signed with a private key, and transmitted to the Oracle contract 150 (step S212).

The Oracle contract 150 transmits the transaction to the service contract 140 (step S214). For reference, the information included in the transaction at the time delivery starts includes product information provided by the seller 110 by default, and location information and time (start time) information provided by the Oracle device 131 may be added. have. At this point, delivery begins.

When the deliverer arrives at the delivery destination, the delivery item information is once again read into the Oracle device 131 (step S216), and a block chain transaction for delivery completion is generated (step S218). Information included in the transaction when delivery is completed may include product information provided by the seller 110 and location information and time (arrival time) information provided by the Oracle device 131. The created transaction is signed and transmitted to the Oracle contract 150.

The Oracle contract 150 transfers the received transaction to the service contract 140 (step S220).

The service contract 140 compares the delivery condition and the delivery result defined based on the information of the delivery start and delivery completion transaction, and checks an action to be performed that meets the condition (step S222).

At this time, the amount (deposit) deposited by the purchaser is converted to the unlocked state, and an action corresponding to the condition is automatically performed. For example, assuming the conditions of the service contract illustrated in FIG. 2, N% of the deposited amount may be remitted to the seller under the condition that delivery is completed by the delivery person (step S224).

5 shows a buyer device equipped with an Oracle client.

When the purchaser 120 receives the product from the delivery person (step S226), the purchaser 120 checks the product delivered to the Oracle client 1211 mounted on the purchaser device 121 (eg, a smartphone, tablet PC, etc.), and disputes If there is no room for doubt, a procedure to confirm that the remaining balance ((100-N)% deposit) for the received goods can be transferred to the seller 110 can be carried out.

If approval is granted by the purchaser device 121 in the confirmation procedure, a transaction to be sent to the service contract 140 through the Oracle contract 150 is generated (step S228). The buyer can sign and send the generated transaction.

The service contract 140 may confirm the consent of the buyer and remit the remaining balance to the seller 110 (step S230).

As an example of an action that is automatically performed when the delivery condition defined in the service contract 140 in this embodiment is not satisfied, the deposit balance of (100-N)% when the condition by the delivery result is determined to provide a discount The discounted amount can be remitted to the buyer 120 and the rest can be remitted to the seller 110 (step S232).

In addition, in the present embodiment, a function for protecting buyers and sellers may be added.

The purchaser 120 may record whether or not a normal product has been delivered through an unboxing video taken as a video of the procedure for opening the package of the delivered product. If there is a defect in the product, you can receive an additional discount by recording and submitting the condition at the time of receipt. From the seller's point of view, it is possible to prevent the buyer who received the normal product from claiming product defects with malicious intent.

In addition, when there is a problem with the delivered product, the buyer 120 may raise an issue to the seller 110 to resolve the dispute.

Approval by the purchaser 120 may be required to be made within a predetermined period (eg, 1 day). If the buyer does not approve it, it is automatically considered to have been approved, so that the seller can be paid the amount of the item on time.

According to this embodiment, a method in which a buyer deposits an amount in a contract using the smart contract technology of a blockchain and automatically settles it according to the result can be used. Using blockchain oracle technology, product prices can be automatically newly set according to the status (condition), which can resolve disputes between sellers and buyers that may occur in current online shopping/selling, and provide higher quality services to buyers. You can make it experience.

It is natural that the method for automatically setting a product price according to the present embodiment may be performed in an automated procedure according to a time series sequence by a program built in or installed in a digital processing device. Codes and code segments constituting the program can be easily inferred by a computer programmer in the art. Further, the program is stored in a computer readable media that can be read by a digital processing device, and is read and executed by the digital processing device to implement the method. The information storage medium includes a magnetic recording medium, an optical recording medium, and a carrier wave medium.

Although the above has been described with reference to preferred embodiments of the present invention, those of ordinary skill in the relevant technical field can variously modify the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. It will be appreciated that it can be modified and changed.

100: automatic commodity pricing system 110: seller
120: buyer 130: deliverer
140: Service Contract 150: Oracle Contract
131: Oracle device 1311: Oracle client
1312: transaction generation module 1313: signature processing module
1314: key store 1315: product information acquisition unit
1316: device information providing unit 121: purchaser device
1211: Oracle client

Claims (11)

As a method of automatically setting product prices performed in an automatic product price system using blockchain oracle technology,
Creating a service contract defining conditions related to the seller's service and an action to be performed by the seller's first digital processing device;
Registering information on an article in a blockchain distributed ledger by the first digital processing device;
Remittance of the product amount to the service contract by a second digital processing device of a purchaser who has requested to purchase the product;
Reading information on the goods at the beginning of delivery and upon completion of delivery through an oracle device of the deliverer who delivers the goods, creating a block chain transaction for starting and completing delivery, and transmitting the transaction to an Oracle contract;
Transmitting, by the Oracle contract, a block chain transaction related to the delivery start and delivery completion to the service contract;
Comprising the step of comparing a condition and a result based on the information of the blockchain transaction in the service contract to check and perform an action to be performed that meets the condition,
In the step of transferring the amount of goods to the service contract, the service contract converts the amount of goods into a locked state, and converts the amount of goods into an unlocked state in the step of performing the execution action,
The performing action includes an action of remitting part or all of the amount of the product to the seller,
The Oracle device is equipped with an Oracle client in which a security environment according to the Trusted Execution Environment (TEE) or Secure Element (SE) is built,
The oracle client includes a transaction creation module that prevents forgery of information when generating the block chain transaction; A signature processing module for signing the blockchain transaction using the signing key of the Oracle client required for signature stored in a key store, and
The blockchain transaction generated by the transaction creation module includes basic information data required by the blockchain in which the Oracle contract is serviced, and information data required by the service contract,
The transaction generation module generates a hash of data included in the blockchain transaction,
The signature processing module provides integrity by signing the hash with a private key, which is the signing key, using the SIGN function of the blockchain in which the Oracle contract is serviced,
The block chain transaction related to the start of delivery includes information on the item, location information of the Oracle device at the start of delivery, and information on delivery start time,
The blockchain transaction for the delivery completion includes information on the item, location information of the Oracle device when delivery is completed, and delivery completion time information,
In the service contract, a first delivery completion condition checked by a delivery person related to delivery completion and a second delivery completion condition checked by a buyer are defined,
As the performing action, when the first delivery completion condition is satisfied, part of the amount of the item is remitted to the seller, and when the second delivery completion condition is satisfied, the remainder of the product amount is remitted to the seller. ,
When the second delivery completion condition is satisfied and the buyer uploads the unboxing video, the corresponding action is to apply a pre-designated discount, and when applying the discount, transfer the discounted amount from the remaining amount of the item to the buyer. Remit the amount excluding the discounted amount from the rest to the seller,
In the service contract, when delivery is completed within a predetermined period in relation to the delivery period, an action action is defined that sets 100% of the purchase price as the product price,
The information on the product is provided in the form of a QR code or a bar code at the time of delivery of the product,
The oracle device obtains information on the product through an image device or a barcode reader.
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