KR20190096220A - Platform and Method for Safety Transaction based on Block Chain - Google Patents

Abstract

Disclosed are a safe transaction platform based on a block chain allowing a seller and buyer to trade digital assets through safe transaction numbers linked to block chain addresses and enabling safe and reliable direct transactions between individuals without the need for third-party intermediaries and a method thereof. According to one aspect of the present invention, the platform mediating a merchandise transaction based on a block chain comprises: a transaction generating unit generating a safe transaction number associated with a block chain address condition when receiving a sale request including a transaction condition from a seller and generating a sales notice including the safe transaction number and the transaction condition; and a transaction intermediary smart contract mediating a transaction by reviewing whether the transaction condition is satisfied when receiving a purchase request from a buyer through the safe transaction number.

Description

Platform and Method for Safety Transaction based on Block Chain}

The present invention relates to a blockchain-based secure transaction platform and method, and more specifically, a seller and a buyer can trade digital assets through a secure transaction number linked to a blockchain address to securely and reliably trade between individuals without a third intermediary. The present invention relates to a possible blockchain-based secure transaction platform and method.

At present, electronic vouchers are issued in the form of image files marked with barcodes and sent to MMS, SNS, email, etc., and are operated to recognize barcodes of electronic vouchers with a barcode reader in the point of use system. Electronic gift certificates come in a variety of forms, including mobile, PC, and printouts, making them easy to use, but the owner of ownership is not displayed, and the POS terminal does not identify the owner.

Conventionally, direct transactions between individuals regarding electronic gift certificates are mainly performed by exposing each other through the disclosure of contacts, and after the prepayment, are mainly used to transmit the electronic gift certificates. However, personal information (telephone number) is exposed during the contact verification process. In addition, fraud such as electronic vouchers not being sent after the payment is made frequently. In addition, despite the increasing number of direct transactions between individuals through used trading sites, there are insufficient safeguards for protecting personal information and direct transactions of electronic gift certificates.The issuer is not responsible for distribution or use after issuing electronic gift certificates. have.

Recently, the electronic voucher market has been growing rapidly (1.1 trillion in 2016, 117% year-on-year), and as the use of smartphones becomes more common, the scale of digital assets, including electronic vouchers used, exchanged and traded, has increased rapidly. As a result, there is an increasing need for a solution to the above-mentioned problems.

Republic of Korea Patent Publication No. 10-2017-0100247, "Method of providing a mobile gift certificate service, a terminal device and a server therefor"

The present invention has been proposed to solve the above-described problems, by ensuring the anonymity of the trading party by proceeding SMS direct transactions between individuals through a secure transaction number based on blockchain, it is possible to safely trade goods without a third intermediary The purpose is to provide a blockchain-based secure transaction platform and method.

According to an aspect, the platform for securely brokering a transaction based on the blockchain, upon receiving a sales request including a transaction condition from a seller, generates a secure transaction number associated with the blockchain address, and generates the secure transaction number and the transaction condition. A transaction generator for generating a sales notice including a; And a transaction intermediary smart contract for brokering a transaction by reviewing whether the transaction condition is satisfied when receiving a purchase request from the buyer through the safe transaction number.

The transaction generation unit may generate a transaction brokerage smart contract corresponding to the secure transaction number when generating the secure transaction number and map the address of the secure transaction number and the transaction brokerage smart contract.

The platform for securely brokering a transaction based on the blockchain includes: a block for mapping a transactional number of a terminal of a seller and a terminal of a buyer to a blockchain address to create a transaction account of the seller and the buyer in a blockchain network; It may further include a chain account generator.

The transaction intermediary smart contract, when the purchase request received through the secure transaction number satisfies the transaction conditions, transmits a remittance transaction to the seller's blockchain address and transmits a commodity data transaction to the buyer's blockchain address. Mediating transactions and distributing and storing transaction details in the blockchain network.

The transaction intermediary smart contract sends a transaction failure transaction to the seller's blockchain address and the buyer's blockchain address if the purchase request received through the secure transaction number does not satisfy the transaction condition. Proceed and distribute the return details to the blockchain network.

The transaction generation unit may generate a secure transaction number with an anonymous virtual number that can be messaging and map it with an address of the transaction brokerage smart contract.

According to another aspect, a method of securely brokering a transaction based on a blockchain may include generating a secure transaction number associated with a blockchain address upon receiving a sales request including a transaction condition from a seller, and generating the secure transaction number and the transaction condition. Generating a transaction by generating a sales notification comprising a; And brokering a transaction by reviewing whether the transaction condition is satisfied when receiving a purchase request from the buyer through the safe transaction number.

The generating of the transaction may include generating a transaction brokerage smart contract corresponding to the safety transaction number and mapping the address of the transaction brokerage smart contract when the safety transaction number is generated.

The method for securely brokering a transaction based on the blockchain may include, before generating the transaction, mapping a messaging possible number of a seller's terminal device and a buyer's terminal device to a blockchain address to the seller and the blockchain network. Generating the transaction account of the buyer in a blockchain network;

The brokering of the transaction may include receiving a purchase request from the buyer through the secure transaction number; And determining whether the purchase request content received through the safe transaction number satisfies the transaction condition.

The brokering of the transaction may include brokering a transaction by transmitting a remittance transaction to the seller's blockchain address and transmitting a commodity data transaction to the buyer's blockchain address when the transaction condition is satisfied; And storing the transaction details in the blockchain network.

The brokering of the transaction may include returning a transaction failure transaction to the seller's blockchain address and the buyer's blockchain address if the purchase request received through the secure transaction number does not satisfy the transaction condition. Proceeding; And distributing and storing the return details in the blockchain network.

The generating of the transaction may generate a secure transaction number with an anonymous virtual number that can be messaging and map the address with the transaction brokerage smart contract.

According to one embodiment, by providing a transaction method through the existing SMS as it is, while maintaining convenience, the transaction is carried out through a secure transaction number based on the blockchain address to ensure the anonymity of the parties during the transaction risk and burden of personal information leakage Can be reduced.

According to another aspect, if a transaction is satisfied, the transaction is brokered through a smart contract that enforces the conditional fulfillment, thereby increasing the credibility of the transaction between the parties and activating the direct transaction, as well as decentralizing and storing all transaction details on the blockchain. History can be managed transparently.

1 is a conceptual diagram illustrating a secure transaction system in which a blockchain-based secure transaction platform according to an embodiment interoperates safely with an existing SMS server.
FIG. 2 is a block diagram illustrating a configuration of each node constituting the blockchain network of FIG. 1.
3 is a conceptual diagram illustrating a method for brokering a transaction through a blockchain address in a secure transaction platform in the blockchain network of FIG. 1.
4 is a block diagram showing the configuration of a smart contract stored in each node of FIG. 1 to realize a blockchain-based secure transaction platform.
5 is a flowchart illustrating a blockchain-based secure transaction method according to another embodiment.
FIG. 6 is a flowchart for explaining the transaction creation step of FIG. 5 in detail.
FIG. 7 is a flowchart illustrating the transaction brokering step of FIG. 5 in detail.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the following embodiments. This embodiment is provided to more completely explain the present invention to those skilled in the art. In addition, although specific terms are used in the drawings and the specification of the present invention, they are used only for the purpose of illustrating the present invention and are not used to limit the scope of the present invention as defined in the meaning or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

In the present specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and / or “comprising” refers to the presence of one or more other components, steps, operations and / or elements in the components, steps, operations and / or elements mentioned. Or does not exclude the addition.

Next, the blockchain-based secure transaction platform and method of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram illustrating a secure transaction system in which a blockchain-based secure transaction platform according to an embodiment interoperates safely with an existing SMS server. Referring to FIG. 1, the secure transaction system may include an SMS server 10, a blockchain network 20, and a secure transaction platform 30.

 The SMS server 10 is a device that receives a short message from the calling terminal device A and transmits it to the called terminal devices A and B. According to an embodiment, the SMS server 10 receives a short message containing the contents of the sales request from the terminal A of the seller or a short message containing the contents of the purchase request from the terminal B of the buyer. If so, the received sale request short message and purchase request short message is delivered to the secure transaction platform (30). In addition, when the SMS server 10 receives the transaction result performed in the blockchain network 20 from the secure transaction platform 30, the SMS server 10 includes the terminal device A possessed by the seller and the terminal device B possessed by the buyer. You can communicate the transaction results. On the other hand, the message delivered by the SMS server 10 is not limited to the SMS, and may include all the messaging services, such as MMS (Multimedia Messaging Service), EMS (Enhanced Messaging Service).

The blockchain network 20 may include a node 21 and a client 22. According to an embodiment, the node 21 and the client 22 may be implemented as a smart terminal, a PC, a server, or the like as a terminal constituting the blockchain network 20.

The node 21 may store and execute a smart contract to realize the safe trading platform 30 and automatically execute transactions between the parties according to the set conditions. The blockchain network 20 may include at least one or more nodes 21, which manage the common synchronized state information, such as one or more variable-value pairs, and which the secure transaction platform 30 realizes. In this process, the transaction generated by the client 22 may be shared through a process of distribution and summation. In addition, the nodes 21 execute a predefined common procedure in the blockchain network 20 according to the contents of the shared transaction, or execute a smart contract corresponding to the transaction, and execute the common procedure or the smart gun contract. The changed common state information can be stored. In addition, the nodes 21 include a database storing shared transactions, smart contracts, and common state information, and the database may be formed in a block chain.

The client 22 can propagate the transaction to all nodes 21 in the blockchain network 20 by creating a transaction and passing it to one or more nodes 21. In addition, the client 22 can confirm the execution result of the smart contract executed in the node 21 by the transaction.

The secure transaction platform 30 brokers the transaction of the goods through the SMS server 10 of the seller and the buyer in the blockchain network 20, and the transaction results are transferred to the terminal device A and the buyer of the seller through the SMS server 10. Can be transmitted to the terminal device (B). Here, the product to be traded is a digital product that can be transmitted via SMS, for example, can be realized as an electronic gift certificate, but is not limited to the electronic gift certificate.

FIG. 2 is a block diagram illustrating a configuration of each node constituting the blockchain network of FIG. 1. Referring to FIG. 2, the node 21 may include a communication unit 211, a control unit 213, an independent execution unit 215, and a storage unit 217.

The communication unit 211 may interconnect one or more nodes 21 and the client 22 constituting the blockchain network 20. According to an embodiment, the communication unit 211 may receive a block and a transaction transmitted from another node 21 and transmit the received block and transaction to the controller 213. In this case, the transaction may be defined as a remittance transaction, a commodity data transaction, or the like depending on the purpose, function, and data contents thereof.

The controller 213 analyzes the block and the transaction received through the communication unit 211 and executes a common procedure defined in advance according to the contents of the transaction, or executes the smart contract corresponding to the transaction in the independent execution unit 215. You can. The controller 213 may store the common state information changed according to the execution of the common procedure and the execution of the smart contract in the storage unit 217.

The independent execution unit 215 may execute the smart contract under the control of the control unit 213.

The storage unit 217 stores the blocks and transactions received through the communication unit 211, the smart contracts generated by the transactions, the execution of the common procedures of the control unit 213 and the execution of the smart contracts of the independent execution unit 215. The changed common state information can be stored. According to an embodiment, the storage unit 217 may be implemented as a database formed in a blockchain structure.

3 is a conceptual diagram illustrating a method for brokering a transaction through a blockchain address of a secure transaction platform in the blockchain network of FIG. 1, and FIG. 4 is stored in each node of FIG. 1 to realize a blockchain-based secure transaction platform. This is a block diagram showing the construction of a smart contract.

The secure transaction platform 30 maps the messaging number (ex, phone number) of the seller's terminal device (A), the messaging number of the buyer's terminal device (B), and the secure transaction number, respectively, to the blockchain address. Although SMS transactions are performed through the SMS server 10, the transactions can be safely performed in the blockchain network 20. Referring to FIG. 3, the messaging number of the seller's terminal device A is the seller's blockchain address, the buyer's terminal device B's messaging number is the buyer's blockchain address, and the secure transaction number is the smart contract address. Each can be mapped.

According to an embodiment of the present disclosure, the secure transaction platform 30 may interoperate with the SMS server 10, which is an existing legacy device, to exchange product transactions between the seller and the buyer through the blockchain network 20. The seller connects to the SMS server 10 through his terminal device A, and the buyer owns his / her terminal device B, and sends and receives a short message. 10) by receiving the request of the seller and the buyer from the brokerage between the seller and the buyer commodity trading in the blockchain network 20 and the product transaction results through the SMS server 10 of the seller's terminal (A) and the buyer It can be delivered to the terminal device (B).

According to another embodiment, the secure transaction platform 30 is directly connected to the seller's terminal device (A) and the buyer's terminal device (B), rather than through the legacy server SMS server 10, the mutual goods Transactions can be brokered through the blockchain network 20.

Referring to FIG. 4, the secure transaction platform 30 may include a blockchain account generator 31, a transaction generator 33, and a transaction brokerage smart contract 35. In addition to the transaction brokerage smart contract 35, the blockchain account generator 31 and the transaction generator 33 may also be realized as a smart contract, and the smart contract may be a storage unit 217 illustrated in FIG. 2. The data stored in the controller 213 may be executed by the independent execution unit 215 under the control of the controller 213. According to an embodiment, the smart contract is a program that implements the secure transaction platform 30, and when the set condition is satisfied, the smart contract is automatically realized according to the condition.

Blockchain account generation unit 31, according to an embodiment, an identification number (ex) that can be messaging from the seller's terminal device (A) and the buyer's terminal device (B) through a membership registration process or a separate member information input process , A telephone number), and the received identification number and the blockchain address may be mapped to create a transaction account of the seller and the buyer in the blockchain network 20. Through the blockchain addresses of sellers and buyers, transactions related procedures, such as product transfer and remittance transfer, may be performed in the blockchain network 20.

The transaction generation unit 33 may generate a secure transaction number when receiving a sale request including a transaction condition, product information, a product image, and the like from the seller. Here, the secure transaction number (ex, FM065C001, 070-2010-3324) is an anonymous virtual number capable of messaging, and may be generated by a random number generator or any combination of numbers, numbers, and letters. The seller and the buyer can be guaranteed anonymity of the trading party by sending and receiving information on the goods transaction via SMS through the secure transaction number.

In addition, the transaction generator 33 may generate a transaction brokerage smart contract 35 corresponding to the safety transaction number when the safe transaction number is generated, and may map the address of the safe transaction number and the transaction brokerage smart contract 35. have. Here, the address of the transaction brokerage smart contract 35 is a blockchain address where the corresponding transaction brokerage smart contract 35 can be found in the blockchain network 20.

According to one embodiment, the transaction generator 33 may generate a transaction intermediary smart contract 35 to mediate the transaction every time a secure transaction number is generated, that is, each time a transaction is generated. Referring to FIG. 4, the transaction brokerage smart contract 35 may be generated in plural numbers 35: 1, 2,..., N so as to broker transactions in response to different transaction conditions for each transaction. The transaction brokerage smart contracts 35: 1, 2,..., N may be identified by a plurality of mapped safe transaction numbers, respectively.

In addition, the transaction generation unit 33 may generate a sales notice (ex, sales article) including the transaction conditions and the safe transaction number presented by the seller, the sales notification content and the safe transaction to the terminal device (A) of the seller. The number information can be transmitted. According to an embodiment, the transaction generation unit 33 may post a sale bulletin generated by a predetermined bulletin board or a linked homepage so that buyers can view the article.

When the transaction intermediary smart contract 35 receives a purchase request from the buyer through a safe transaction number, the transaction intermediary smart contract 35 may review the transaction condition satisfaction and mediate the transaction. According to an embodiment of the present disclosure, the purchaser may transmit the purchase amount to the secure transaction number together with the purchase request through the terminal device B possessed by the purchaser, and the transaction intermediary smart contract 35 may include a purchase amount remitted by the buyer and a seller. It is possible to examine the satisfaction of the trade terms by comparing the trade amounts suggested in the trade terms. According to another embodiment, the transaction conditions may include various conditions such as buyer gender, age, sales period, etc., in addition to the transaction amount, and the transaction brokerage smart contract 35 may review whether all the transaction conditions presented in the transaction are satisfied. Can be.

When the transaction brokerage smart contract 35 determines that the purchase request received through the secure transaction number satisfies the transaction conditions, the transaction brokerage smart contract 35 transmits a remittance transaction to the seller's blockchain address and sends the product data to the buyer's blockchain address. You can broker transactions by sending them automatically. In other words, the transaction intermediary smart contract 35 transmits the purchase amount remitted by the buyer to the seller's blockchain address in electronic money, and transmits an image (ex, an electronic gift certificate) image to the buyer's blockchain address. According to an embodiment, since the phone number of the seller terminal A and the phone number of the buyer terminal B are respectively mapped to the blockchain address, the seller purchases stored at the blockchain address through the SMS server 10. The amount of money received by the terminal device A can be exchanged for real money, and the purchaser can receive the electronic voucher image stored in the blockchain address through the SMS server 10 to the terminal device B. The transaction intermediary smart contract 35 may distribute and store transaction details, that is, remittance transaction and commodity data transaction information, in the blockchain network 20.

When the transaction brokerage smart contract 35 determines that the purchase request received through the secure transaction number does not satisfy the transaction condition, the transaction failure transaction that returns the gift certificate image transmitted when the sales request is sent to the blockchain address of the seller The transaction can return to the buyer's blockchain address by sending a transaction failure transaction that returns the purchase amount received when the purchase request was made. According to another embodiment, the transaction intermediary smart contract 35 proceeds with the return procedure by transmitting a transaction failure transaction that returns the purchase amount received when the purchase request is made to the purchaser's blockchain address, but the image of the gift certificate received when the sales request is made. Can send a transaction failure transaction containing only the transaction failure details to the seller's blockchain address and wait for a purchase request from another buyer. The transaction intermediary smart contract 35 may distribute and store return details, that is, return transaction information, in the blockchain network 20.

5 is a flowchart illustrating a blockchain-based secure transaction method according to another embodiment, FIG. 6 is a flowchart illustrating the transaction generation step of FIG. 5 in detail, and FIG. 7 is a flowchart illustrating the transaction brokerage step of FIG. 5 in detail. to be.

Referring to FIG. 5, the blockchain-based secure transaction method may include a blockchain account generation step S10, a transaction generation step S20, and a transaction brokerage step S30.

In step S10, the secure transaction platform 30 is a telecommunication line capable of messaging from the seller's terminal device (A) and the buyer's terminal device (B) through a membership registration process or a separate member information input process according to an embodiment of the present invention. Receiving a number (ex, telephone number), and mapping the received telecommunication line number and the blockchain address to create a trading account of the seller and the buyer in the blockchain network 20. Through the blockchain addresses of sellers and buyers, transactions related procedures, such as product transfer and remittance transfer, may be performed in the blockchain network 20.

In step S20, when the safe transaction platform 30 receives a sale request including a trade condition from the seller, it generates a safe transaction number associated with the blockchain address, and generates a sale notice including the safe transaction number and the trade condition. Can be.

Referring to FIG. 6, when the secure transaction platform 30 receives a sales request including a transaction condition, product information, a product image, etc. from a seller (S21), the secure transaction platform 30 may generate a secure transaction number and a transaction brokerage smart contract ( S22). Here, the secure transaction number (ex, FM065C001, 070-2010-3324) is an anonymous virtual number capable of messaging, and may be generated by a random number generator or any combination of numbers, numbers, and letters. The seller and the buyer can be guaranteed anonymity of the trading party by sending and receiving information on the goods transaction via SMS through the secure transaction number. Here, the address of the transaction brokerage smart contract is a blockchain address where the corresponding transaction brokerage smart contract can be found in the blockchain network 20.

According to an embodiment of the present disclosure, the secure transaction platform 30 may generate a transaction intermediary smart contract to mediate the transaction every time a secure transaction number is generated, that is, each time a transaction is generated. Referring to FIG. 4, the transaction brokerage smart contract 35 may be generated in plural numbers so as to broker transactions in response to different transaction conditions for each transaction, and the plurality of transaction brokerage smart contracts 35: 1, 2, and the like. ..., N) may be identified by a plurality of mapped safety transaction numbers, respectively.

The secure transaction platform 30 may map the secure transaction number and the address of the transaction brokerage smart contract (S23). The secure transaction platform 30 maps the secure transaction number and the address of the smart contract, which is a blockchain address, so that SMS messages transmitted and received through the secure transaction number can be delivered to the transaction brokerage smart contract in the blockchain network 20. Make sure you can.

The secure transaction platform 30 may generate a sale notice (ex, sale article) including a transaction condition and a safe transaction number presented by the seller, and the sale notice content and the safe transaction number information to the terminal device (A) of the seller. It may be transmitted (S24). According to an embodiment, the secure transaction platform 30 may post a sales bulletin generated by a predetermined bulletin board or a linked homepage so that buyers can view the article.

In step S30, when the safe transaction platform 30 receives the purchase request from the buyer through the safe transaction number may examine the transaction conditions satisfied and broker the transaction.

Referring to FIG. 7, when the secure transaction platform 30 receives a purchase request from the buyer through the secure transaction number (S31), the secure transaction platform 30 may examine whether the transaction condition is satisfied (S32). According to an embodiment, the buyer may transmit the purchase amount to the secure transaction number together with the purchase request, and the secure transaction platform 30 may compare the purchase amount remitted by the buyer with the transaction amount suggested by the seller in terms of the transaction. Review the terms of the transaction. According to another embodiment, the transaction conditions may include various conditions such as buyer gender, age, sales period, etc., in addition to the transaction amount, and the secure transaction platform 30 may review whether all the transaction conditions presented in the transaction are satisfied. have.

If the secure transaction platform 30 determines that the purchase request received through the secure transaction number satisfies the transaction conditions (S32, Yes), the remittance transaction is transmitted to the blockchain address of the seller, and the buyer's blockchain The transaction may be brokered by automatically transmitting the commodity data transaction to the address (S33). That is, the secure transaction platform 30 transmits the purchase amount remitted by the buyer to the seller's blockchain address in electronic money, and transmits an image (ex, an electronic gift certificate) image to the buyer's blockchain address. According to one embodiment, the phone number of the terminal device (A) and the phone number of the terminal device (B) are respectively mapped to the blockchain address, so that the seller can purchase the purchase amount stored in the blockchain address through the SMS server 10. Received by the terminal device (A) can be exchanged for real money, the buyer can receive the electronic voucher image stored in the block chain address via the SMS server 10 to the terminal device (B).

The secure transaction platform 30 may distribute and store transaction details, that is, remittance transaction and commodity data transaction information, in the blockchain network 20 (S34).

The secure transaction platform 30, the transaction brokerage smart contract 35, if it is determined that the purchase request content received through the secure transaction number does not satisfy the transaction conditions (S32, No), to the blockchain address of the seller The transaction may return a transaction failure transaction returning the gift certificate image received at the time of the sales request and the transaction failure transaction returning the purchase amount received at the purchase request to the blockchain address of the buyer (S35). According to another embodiment, the secure transaction platform 30 proceeds with the return process by transmitting a transaction failure transaction that returns the purchase amount received when the purchase request is made to the purchaser's blockchain address, but the gift certificate image received when the sales request is You can send a transaction failure transaction that contains only the transaction failure content without returning it to the seller's blockchain address, and wait for another buyer's purchase request.

The secure transaction platform 30 may distribute and store return details, that is, return transaction information, in the blockchain network 20 (S36).

While this specification contains many features, such features should not be construed as limiting the scope of the invention or the claims. Also, the features described in the individual embodiments herein can be implemented in combination in a single embodiment. Conversely, various features described in a single embodiment herein can be implemented individually in various embodiments or in combination as appropriate.

Although the operations are described in a particular order in the drawings, they should not be understood as being performed in a particular order as shown, or in a sequence of successive orders, or all described actions being performed to obtain a desired result. . Multitasking and parallel processing may be advantageous in certain circumstances. In addition, it should be understood that the division of various system components in the above-described embodiments does not require such division in all embodiments. The program components and systems described above may generally be packaged in a single software product or multiple software products.

The method of the present invention as described above may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

10: SMS server 20: Blockchain network
30: secure transaction platform 31: blockchain account generator
33: Deal Generation Unit 35: Deal Brokerage Smart Contract

Claims (13)

In the platform for brokering commodity trading based on blockchain,
A transaction generator for generating a secure transaction number associated with a blockchain address and generating a sales notice including the secure transaction number and the transaction condition upon receiving a sales request including a transaction condition from a seller; And
A transaction intermediary smart contract that brokers a transaction by examining whether the transaction condition is satisfied when a purchase request is received from the buyer through the safe transaction number;
Platform comprising a. The method of claim 1,
The transaction generation unit,
And generating a transaction brokerage smart contract corresponding to the secure transaction number when mapping the secure transaction number and mapping the address of the secure transaction number and the transaction brokerage smart contract. The method of claim 2,
A blockchain account generator for generating a transaction account of the seller and the buyer in the blockchain network by mapping a messaging number of the seller's terminal device and the buyer's terminal device to a blockchain address;
Platform further comprising a. The method of claim 3,
The transaction brokerage smart contract,
If the purchase request received through the secure transaction number satisfies the transaction conditions, the transaction is relayed by transmitting the remittance transaction to the seller's blockchain address and the transaction of the commodity data to the buyer's blockchain address. A platform characterized by storing transaction details in a chain network. The method of claim 3,
The transaction brokerage smart contract,
If the purchase request received through the secure transaction number does not satisfy the transaction conditions, a transaction failure transaction is sent to the blockchain address of the seller and the blockchain address of the buyer to proceed with a return procedure and to the blockchain network. A platform characterized by storing the return history distributed. The method according to any one of claims 2 to 5,
The transaction generation unit,
A platform for generating a secure transaction number with an anonymous virtual number that can be messaging and mapping the address to the transaction brokerage smart contract. In the way that the secure trading platform brokers the trading of goods on the basis of blockchain,
Generating a transaction by generating a secure transaction number associated with a blockchain address and generating a sale notice including the secure transaction number and the transaction condition when a sales request including a transaction condition is received from a seller; And
Receiving a purchase request from the buyer through the safe transaction number and brokering the transaction by examining whether the transaction condition is satisfied;
Method comprising a. The method of claim 7, wherein
Generating the transaction,
And generating a transaction brokerage smart contract corresponding to the secure transaction number when mapping the secure transaction number and mapping the address of the secure transaction number and the transaction brokerage smart contract. The method of claim 8,
Prior to creating the transaction,
Mapping a transactional number of a seller's terminal device and a buyer's terminal device to a blockchain address to generate a transaction account of the seller and the buyer on a blockchain network in a blockchain network;
Method further comprising a. The method of claim 9,
Brokering the transaction,
Receiving a purchase request from the buyer through the secure transaction number; And
And determining whether the purchase request content received through the secure transaction number satisfies the transaction condition. The method of claim 10,
Brokering the transaction,
Brokering a transaction by transmitting a remittance transaction to the blockchain address of the seller and a commodity data transaction to the buyer's blockchain address if the transaction condition is satisfied; And
And storing transaction details in the blockchain network. The method of claim 10,
Brokering the transaction,
If a purchase request received through the secure transaction number does not satisfy the transaction condition, transmitting a transaction failure transaction to the seller's blockchain address and the buyer's blockchain address and performing a return procedure; And
Distributing and storing a return history in the blockchain network. The method according to any one of claims 8 to 12,
Generating the transaction,
And generating a secure transaction number using an anonymous virtual number that can be messaging and mapping the address to the address of the transaction brokerage smart contract.

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