KR20220122416A - The false real estate property registration prevention system based on blockchain technology - Google Patents

Abstract

The present invention relates to a system for searching and managing a real estate on sale based on a blockchain, which can prevent unnecessary waste of resources. The system of the present invention comprises: at least one user terminal; a real estate brokerage service providing server; at least one broker terminal for viewing a broker-only sales property list; and a blockchain-based sales property information providing unit for generating and providing a user-only sales property list.

Description

{The false real estate property registration prevention system based on blockchain technology}

The present invention relates to a real estate listing search system that prevents the registration of false listings based on blockchain. More specifically, it relates to a blockchain-based real estate listing search system that can eliminate false listings by issuing tokens corresponding to real listings based on blockchain while providing a real estate listing search service.

Blockchain refers to a data distribution processing technology that distributes and stores all data that is managed by all users participating in the network. It is also called 'Distributed Ledger Technology (DLT)' or 'Public Transaction Ledger' in that the ledger containing transaction information is not owned by the transaction subject or a specific institution, but is a technology shared by all network participants. . Blockchain is a name given to the fact that blocks containing transaction contents are linked like a chain. This block chain is a technology to prevent hacking such as forgery and forgery of transaction contents, and it uses a method to prevent data forgery by sending transaction details to all users participating in the transaction and collating them for each transaction.

The core concept of blockchain is decentralization, which aims for P2P (Peer to Peer) transactions, away from the existing financial system that secures and manages all transactions in financial institutions. P2P refers to a communication network that connects personal computers without a server or client, and each connected computer acts as a server and client and shares information. Through the method of sharing and verifying the same data by multiple nodes, a trust relationship is formed in the digital world. This environment makes it possible to realize smart contracts that can conveniently conclude and modify contracts with P2P without intermediaries.

In the existing financial system, financial companies have kept transaction records in a central server, whereas in a blockchain based on the P2P method, transaction information is stored in blocks, connected in turn, and shared by all participants.

And, in order for all transaction information on the block chain to be recorded in a block, a valid signature is required, and this signature is performed by a valid digital key. A digital key consists of a pair of a private key and a public key. The public key serves as a bank account number, and the private key serves as a password for the account.

On the other hand, virtual currency is also called electronic money or cryptocurrency, and refers to money that is traded online without real money such as banknotes or coins. Unlike regular currencies issued by governments or central banks of each country, cryptocurrency is valued according to rules set by the person who first invented it. In addition, due to the decentralization feature, the government or central bank does not manage the transaction details, and because it is distributed based on blockchain technology, specific institutions such as the government do not guarantee the value or payment.

Korean Patent Registration 10-1857223 (Announcement Date May 11, 2018)

The technical problem to be solved by the present invention is that, in a real estate sale transaction, the seller or lessor for the sale performs identity authentication and issues a unique NFT (None-Fungible Token; non-fungible token) based on a block chain to provide a false sale It is to provide a blockchain-based real estate search system that can eliminate false items by making it possible to manage and view only the actual items for sale as a list for sale.

Another technical problem to be solved by the present invention is that it is possible to check various information such as transaction conditions, brokerage fee information, transaction history, and defect repair status of real estate for sale through blockchain-based NFT to help accurate real estate transactions It is to provide a blockchain-based real estate listing search system that can give

However, the technical problems to be solved by the present invention are not limited to the above problems, and may be variously expanded without departing from the technical spirit and scope of the present invention.

A block chain-based real estate property search system according to an embodiment of the present invention for solving the above problems, at least one user terminal connected through a network, a real estate brokerage service providing server, at least one agent terminal, and a block chain-based property In the real estate sale search system including an information providing unit, at least one user terminal that transmits the information of the real estate object to the real estate brokerage service providing server by specifying the transaction conditions and the brokerage fee range of the real estate object, the at least one user A real estate brokerage service providing server that performs a self-authentication procedure for the terminal, creates and provides real estate sales information including the transaction conditions and the specified brokerage fee range as a real estate agent-only listing list, and reads the broker-only listing list, At least one real estate agent terminal that determines a desired brokerage fee corresponding to the specified brokerage commission range and delivers it to the real estate brokerage service providing server, and real estate agent information determined for the real estate for sale provided from the real estate brokerage service providing server, brokerage It records information including fee information, transaction condition information, and address information of the object on the block chain, creates an NFT (None-Fungible Token) in which the information is recorded, and only for users whose transaction target real estate sale information is registered and a block chain-based property information providing unit that generates and provides a listing list, wherein the NFT is issued as a single token for a corresponding transaction target real estate listing, and the block chain-based listing information provider provides the NFT with owner change history information , update information on the first acquisition date of the product, certified copy information of the register, and transaction price information.

In some embodiments according to the present invention, the range of the brokerage fee specified by the at least one user terminal may be a specified brokerage fee rate or a brokerage fee rate including upper and lower limits.

In some embodiments according to the present invention, the real estate brokerage service providing server may receive from the at least one real estate agent terminal, certified real estate agent certificate information and proof document information about the brokerage location, and may approve it as a real estate agent member terminal.

Other specific details of the invention are included in the detailed description and drawings.

According to the present invention, it is possible to eliminate false properties in real estate transactions through the issuance of blockchain-based NFTs, and to prevent unnecessary waste of resources by authenticating the real properties.

In addition, according to the present invention, it is possible to check various information such as transaction conditions, brokerage fee information, transaction history, and defect repair status of real estate for sale to be transacted through blockchain-based NFT.

In addition, according to the present invention, it is possible to determine a reasonable brokerage fee by enabling multiple brokers to reverse proposals for the range of brokerage commissions proposed by the seller or lessor for real estate transaction or the designated brokerage commission.

However, the effects of the present invention are not limited to the above effects, and may be variously expanded without departing from the spirit and scope of the present invention.

1 is a diagram illustrating a distributed processing system using a block chain to which the technical idea according to the present invention can be applied.
2 and 3 are block diagrams illustrating the connection of blocks used in a block chain system.
4 is a view for explaining a block chain-based real estate listing search system according to an embodiment of the present invention.
5 is a block diagram for explaining a real estate brokerage service providing server included in the system of FIG.
6 is a diagram for explaining the operation of a blockchain-based real estate listing search system according to an embodiment of the present invention.
7 is a block diagram of a computing device of a node according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be embodied in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments, and is not intended to limit the present invention. In this 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 mentioned. or addition is not excluded.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined.

In this specification, a "part" includes a unit realized by hardware, a unit realized by software, and a unit realized using both. In addition, one unit may be implemented using two or more hardware, and two or more units may be implemented by one hardware. Meanwhile, '~ unit' is not limited to software or hardware, and '~ unit' may be configured to be in an addressable storage medium or to reproduce one or more processors. Thus, as an example, '~' denotes components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables. The functions provided in the components and '~ units' may be combined into a smaller number of components and '~ units' or further separated into additional components and '~ units'. In addition, components and '~ units' may be implemented to play one or more CPUs in a device or secure multimedia card.

In this specification, some of the operations or functions described as being performed by the terminal, apparatus, or device may be performed instead of in a server connected to the terminal, apparatus, or device. Similarly, some of the operations or functions described as being performed by the server may also be performed in a terminal, apparatus, or device connected to the server.

In this specification, some of the operations or functions described as mapping or matching with the terminal means mapping or matching the terminal's unique number or personal identification information, which is the identification data of the terminal. can be interpreted as

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same components in the drawings, and repeated descriptions of the same components are omitted.

The present invention relates to a real estate for sale search system that can block false sales by allowing a seller to determine a brokerage fee and a real estate agent for a real estate sale based on a block chain and then expose it to a platform user to search for a real real estate sale.

In the case of existing real estate transaction-related platforms, real estate agents register false properties to lure buyers or lessees, and then recommend similar properties to close the transaction. Due to this false registration of the property, it is difficult for the buyer or the lessee to receive accurate information, and in the real estate sale transaction, the buyer or the lessee finds the property in a state of distrust. In addition, with only the information registered by the broker, you have no choice but to proceed with the real estate sale without knowing the exact state of the sale, and accurately determine the defect repair history or the advantages or inconveniences in the living environment for the object you wish to purchase or lease. You are trading real estate without knowing it.

In order to solve the above problems, the present invention intends to propose a blockchain-based real estate for sale search system that can eliminate false sales and deliver accurate information related to tradable objects in real estate sales transactions.

Hereinafter, first, a distributed processing system using a block chain to which the concept of the present invention can be applied will be described.

1 is a diagram illustrating a distributed processing system using a block chain to which the technical idea according to the present invention can be applied.

Referring to FIG. 1 , a distributed processing system 100 using a block chain is a distributed network system consisting of a plurality of nodes 110-170. The nodes 110 to 170 constituting the distributed network 100 may be electronic devices having computational capabilities, such as computers, mobile terminals, and dedicated electronic devices.

In general, the decentralized network 100 can store and refer to information commonly known to all participating nodes in a connected bundle of blocks called blockchain. The nodes 110-170 can communicate with each other and can be divided into a full node that stores, manages, and propagates the block chain and a light node that can simply participate in transactions. When referring to a node without a separate description in this specification, it often refers to a full node that participates in a distributed network and performs an operation to create, store, or verify a block chain, but is not limited thereto.

Each block connected to the block chain includes transaction details, that is, transactions within a certain period. The nodes can manage transactions by creating, storing, or verifying the blockchain according to their respective roles.

According to an embodiment, the transaction may represent various types of transactions. In one embodiment, the transaction may correspond to a financial transaction for indicating the ownership status of cryptocurrency and its change. In another embodiment, the transaction may correspond to a physical transaction for indicating the ownership status of the object and its change. In another embodiment, the transaction may correspond to an information sharing process to represent the recording, storage and transfer of information. Nodes performing a transaction in the distributed network 100 may have a private key and a public key pair each cryptographically related.

2 and 3 are block diagrams showing the connection of blocks used in the block chain system.

Referring to FIG. 2 , the block chain 200 is a kind of distributed database of one or more sequentially connected blocks 210 , 220 , 230 . The block chain 200 is used to store and manage the user's transaction details in the block chain system, and each node participating in the network of the block chain system creates a block and connects it to the block chain 200 . Although a limited number of blocks 210, 220, and 230 are shown in FIG. 2, the number of blocks that can be included in the block chain is not limited thereto.

Each block included in the block chain 200 may be configured to include a block header 211 and a block body 213 . The block header 211 may include a hash value of the previous block 220 to indicate a connection relationship between blocks. In the process of verifying whether the block chain 200 is valid, the connection relationship in the block header 211 is used. The block body 213 may include data stored and managed in the block 210 , for example, a transaction list or a transaction chain.

Referring to FIG. 3 , the block header 211 may include a hash 2112 of a previous block, a hash 2113 of a current block, and a nonce 2114 . Also, the block header 211 may include a root 2115 indicating the header of the transaction list in the block.

As described above, the blockchain 200 may include one or more connected blocks. The one or more blocks are connected based on a hash value in the block header 211 . The hash value 2112 of the previous block included in the block header 211 is the same as the current hash 2213 included in the previous block 220 as a hash value of the previous block 220 . The one or more blocks are chained by the hash value of the previous block in each block header. Nodes participating in the distributed network verify the validity of a block based on the hash value of the previous block included in the one or more blocks, so it is impossible for a single malicious node to forge or falsify the contents of an already created block do.

The block body 213 may include a transaction list 2131 . The transaction list 2131 is a list of blockchain-based transactions. For example, the transaction list 2131 may include a record of financial transactions made in the blockchain-based financial system. The transaction list 2131 may be expressed in the form of a tree, and for example, the amount of money sent by user A to user B is recorded in the form of a list, and the storage length in the block is the number of transactions included in the current block. can be increased or decreased based on

In addition, the block 210 may include other information 2116 other than the information included in the block header 211 and the block body 213 .

Nodes participating in a decentralized network have the same blockchain, and the same transactions are stored in blocks. Since the block containing the transaction list is shared on the network, all participating nodes can verify it.

4 is a diagram for explaining a blockchain-based real estate listing search system according to an embodiment of the present invention.

Referring to FIG. 4 , the block chain-based real estate listing search system 300 according to an embodiment of the present invention includes at least one user terminal 310 , a real estate brokerage service providing server 320 , and at least one real estate agent terminal. 330 , and a block chain-based listing information providing unit 340 . However, since the real estate listing search system 300 of FIG. 4 is only an embodiment of the present invention, the present invention is not limitedly interpreted through FIG. 4 .

At this time, each component of FIG. 4 is generally connected through a network. For example, as shown in FIG. 4 , at least one user terminal 310 may be connected to the real estate brokerage service providing server 320 through a network. In addition, the real estate brokerage service providing server 320 may be connected to at least one user terminal 310 , at least one real estate agent terminal 330 , and a block chain-based property information providing unit 340 through a network. In addition, at least one broker terminal 330 may be connected to the real estate brokerage service providing server 320 through a network.

Here, the network refers to a connection structure in which information exchange is possible between each node, such as a plurality of terminals and servers, and examples of such networks include RF, 3rd Generation Partnership Project (3GPP) network, and Long Term (LTE). Evolution) network, 5th Generation Partnership Project (5GPP) network, WIMAX (World Interoperability for Microwave Access) network, Internet, LAN (Local Area Network), Wireless LAN (Wireless Local Area Network), WAN (Wide Area Network) , PAN (Personal Area Network), Bluetooth (Bluetooth) network, NFC network, satellite broadcasting network, analog broadcasting network, DMB (Digital Multimedia Broadcasting) network, and the like are included, but are not limited thereto.

In this specification, the term "at least one" is defined as a term including the singular and the plural, and even if the term "at least one" does not exist, each element may exist in the singular or plural, and the singular or plural It would be obvious that it could mean In addition, that each component is provided in singular or plural may be changed according to embodiments.

The at least one user terminal 310 may be a terminal of a user who uploads transaction conditions of goods using a web page, an app page, a program, or an application related to a block chain-based real estate sale search service. In this case, the user may be any one of a lessor, a lessee, a seller, and a buyer.

In addition, the at least one user terminal 310 may be a terminal that, in the case of a lessor or a seller, specifies a range of brokerage fees in addition to the transaction conditions of the goods to further upload information such as the address of the goods, photos, and the like. In addition, the at least one user terminal 310 may be a terminal that, in the case of a lessor or a seller, designates a specified brokerage fee in addition to the transaction conditions of the product to further upload information such as an address and a photo of the product.

Here, the at least one user terminal 310 may be implemented as a computer that can access a remote server or terminal through a network. Here, the computer may include, for example, navigation, a laptop equipped with a web browser, a desktop, and a laptop. In this case, the at least one user terminal 310 may be implemented as a terminal capable of accessing a remote server or terminal through a network. The at least one user terminal 310 is, for example, a wireless communication device that guarantees portability and mobility, such as navigation, Personal Communication System (PCS), Global System for Mobile communications (GSM), Personal Digital Cellular (PDC), PHS(Personal Handyphone System), PDA(Personal Digital Assistant), IMT(International Mobile Telecommunication)-2000, CDMA(Code Division Multiple Access)-2000, W-CDMA(W-Code Division Multiple Access), Wibro(Wireless Broadband Internet) ) terminal, a smart phone, a smart pad, a tablet PC, etc. may include all kinds of handheld-based wireless communication devices.

The real estate brokerage service providing server 320 may be a server that provides a web page, an app page, a program, or an application of a blockchain-based real estate listing search service.

In addition, the real estate brokerage service providing server 320 may be a server that performs identity authentication for the user terminal 310 and receives a transaction condition of an item from the user terminal 310 . In addition, the real estate brokerage service providing server 320 receives and stores and manages the member registration application of the real estate agent terminal 330, transaction conditions and brokerage fee information of the goods provided from the user terminal 310 to the real estate agent terminal 330 It may be a server that provides

The real estate brokerage service providing server 320 generates information such as transaction conditions of goods provided from at least one user terminal 310 and a specified brokerage fee range as a real estate agent-only listing list and provides it to at least one brokerage terminal 330. and receives an intermediary request from at least one intermediary terminal 330 , provides it to the corresponding user terminal 310 , and then receives selection information from the user terminal 310 related thereto again. The list of brokerage-only properties is

The real estate brokerage service providing server 320 aggregates information on the object to be traded and transmits it to the block chain-based sale information providing unit 340 .

Here, the real estate brokerage service providing server 320 may be implemented as a computer capable of accessing a remote server or terminal through a network. Here, the computer may include, for example, navigation, a laptop equipped with a web browser, a desktop, and a laptop.

The at least one real estate agent terminal 330 may be a real estate agent's terminal using a web page, an app page, a program or an application related to a block chain-based real estate listing service.

In addition, the at least one real estate agent terminal 330 may be a terminal that searches for and outputs a real estate brokerage service providing server 320 after registering as a member and then searching for and outputting a real estate agent-only listing corresponding to at least one transaction condition. In addition, the at least one broker terminal 330 may be a terminal that determines a desired brokerage fee with respect to the range information of the brokerage fee of the product provided by the at least one user terminal 310 and reverses the proposal. Alternatively, the at least one intermediary terminal 330 may be a terminal that requests intermediary for the product when intermediary is desired for the specified intermediary fee provided by the at least one user terminal 310 . At this time, the user terminal 310 determines a specific broker with respect to the brokerage fee or brokerage request proposed by the at least one brokerage terminal 330 , and transmits this information to the real estate brokerage service providing server 320 .

Here, the at least one intermediary terminal 330 may be implemented as a computer capable of accessing a remote server or terminal through a network. Here, the computer may include, for example, navigation, a laptop equipped with a web browser, a desktop, and a laptop. In this case, the at least one intermediary terminal 330 may be implemented as a terminal capable of accessing a remote server or terminal through a network. At least one intermediary terminal 330 is, for example, as a wireless communication device that ensures portability and mobility, navigation, PCS (Personal Communication System), GSM (Global System for Mobile communications), PDC (Personal Digital Cellular), PHS(Personal Handyphone System), PDA(Personal Digital Assistant), IMT(International Mobile Telecommunication)-2000, CDMA(Code Division Multiple Access)-2000, W-CDMA(W-Code Division Multiple Access), Wibro(Wireless Broadband Internet) ) terminal, a smart phone, a smart pad, a tablet PC, etc. may include all kinds of handheld-based wireless communication devices.

The block chain-based property information providing unit 340 receives information such as brokerage information, brokerage fee information, transaction condition information, address of the object, and photos determined for a specific transaction target from the real estate brokerage service providing server 320, and blocks It may be a block chain system that records on a chain, generates an NFT in which the above-mentioned information is recorded, and provides the user-only listing list to at least one user terminal 310 after registering it as an official listing in the user-only listing. .

NFT (None-Fungible Token) means a non-fungible token, and it is impossible to replace one token with another. In the present invention, the reason for creating the NFT in the block-chain-based property information providing unit 340 is that the seller or lessor who owns the sale ownership or rental right of a specific transaction target is verified through the information recorded in the NFT. Since the NFT is not issued in duplicate, it is impossible to register the same item in the blockchain-based real estate search system 300 according to the present invention.

In addition, the information recorded in the NFT in the present invention includes, in addition to information such as brokerage company information, brokerage fee information, transaction condition information, address of goods, photos, etc. may be included, and accordingly, it is possible to check the overall history and status information of the object through the NFT.

The block chain-based listing information providing unit 340 registers the product as an official listing in the user-only listing list while generating an NFT for a specific transaction target product, and at least one user terminal 310 provides the user-only listing list. By browsing, you can check tradable real estate listings that do not have false listings.

In addition, for each real estate for sale, not only information such as brokerage information, brokerage fee information, transaction condition information, address and photo of the object, but also information such as owner change history information, initial acquisition date information, register copy, transaction price information, etc. can be checked through In addition, at least one user terminal 310 may be operated in a manner that pays a cryptocurrency corresponding to a fee in order to check the information of the real estate for sale recorded in the NFT through the user-only sale list.

5 is a block diagram illustrating a real estate brokerage service providing server included in the system of FIG. 4 .

Referring to FIG. 5 , the real estate brokerage service providing server 320 may include a storage unit 321 , a transmission unit 322 , a member management unit 323 , and an article information management unit 324 .

A real estate brokerage service providing server 320 according to an embodiment of the present invention or another server (not shown) operating in conjunction with at least one user terminal 310 and at least one real estate agent terminal 330 provides a real estate sale search service When transmitting an application, program, app page, web page, etc., at least one user terminal 310 and at least one broker terminal 330 install a real estate sale search service application, program, app page, web page, etc. or you can open In addition, a service program may be driven in at least one user terminal 310 and at least one intermediary terminal 330 by using a script executed in a web browser. Here, the web browser is a program that enables the use of a web (world wide web) service, and refers to a program that receives and displays hypertext written in HTML (hyper text mark-up language), for example, Netscape , Explorer, and Chrome. In addition, the application means an application on the terminal, for example, includes an app (app) executed in a mobile terminal (smartphone).

Referring to FIG. 5 , the storage unit 321 may receive and store at least one transaction condition for an item registered in the user terminal 310 , a specified brokerage fee range, or designated brokerage fee information. At this time, the user terminal 310 may select any one of the sale, purchase, lease, and lease of real estate, and register at least one transaction condition including the counterweight of the object, the room structure, the number of floors, the year of construction, and the price. In addition, the user terminal 310 may register a previously designated brokerage fee range or a preset brokerage fee to determine the brokerage fee.

The storage unit 321 includes and stores the above-described information in the real estate agent-only listing list, and allows it to be read by at least one brokerage agent terminal 330 .

When at least one transaction condition is searched for in the at least one brokerage terminal 330 , the transmitter 322 may transmit a broker-dedicated listing list including listings corresponding to the search. In addition, the transmitter 322 may transmit the mediation request provided by the at least one broker terminal 330 to the corresponding user terminal 310 . A broker is designated according to a selection in the user terminal 310 , and the designated agent information for the corresponding product is stored in the storage unit 321 .

The member management unit 323 may manage the at least one broker terminal 330 as a member by receiving a certified real estate agent license and a brokerage location selected from the at least one broker terminal 330 . In addition, the at least one user terminal 310 may be managed as a member after self-authentication and verification of a registered copy of the goods for sale or rental provided by the at least one user terminal 310 .

The product information management unit 324 aggregates the information provided by the user terminal 310 and the broker terminal 330 for the transaction target product and transmits the aggregated information to the block chain-based listing information providing unit 340 .

The block chain-based property information providing unit 340 records information provided from the real estate brokerage service providing server 320 for a specific transaction target on the block chain. A block chain is a chain-type structure that stores transaction details in blocks and connects them. Blockchain is called a distributed public transaction ledger, and transaction details are shared with connected nodes and processed by consensus. Therefore, there is no need for a central server, and this reduces server construction and management costs. Because the transaction is shared by all nodes participating in the blockchain transaction, and when the transaction is modified and approved, it must be approved by each participating node, and verification is performed from time to time. Forgery or hacking is practically difficult.

In addition, the blockchain can provide various services transparently by decentralizing the centrally used functions on a server-by-server basis by using a technology that decentralizes server functions. In the current centralized service, the database server has the authority to the transaction stored in the database, and it has the authority to write and read requests, so it can be handled efficiently, but if the server is hacked, a huge loss occurs. Conversely, in the case of blockchain, information required for transactions and transactions is recorded and shared in the distributed ledger, so information can be directly inquired from the shared node regardless of the administrator's authority. Also, even when a transaction is modified, since the existing record remains in the block chain, any illegal activity can be known through past history verification.

At this time, it is possible to authenticate the mutual contract relationship by using a smart contract on the block chain. In the case of using the blockchain smart contract technology as above, it is possible to detect forgery by sensitively processing even a slight data change. In addition, various processing of events is possible in consideration of the desired transaction format using smart contracts.

6 is a diagram for explaining the operation of a blockchain-based real estate listing search system according to an embodiment of the present invention.

Referring to FIG. 6 , in the block chain-based real estate sale search system 300 according to an embodiment of the present invention, the user terminal 310 performs identity authentication with respect to the real estate brokerage service providing server 320, and the register Membership registration is performed in the status of a seller or lessor by providing supporting documents such as certified copies.

In addition, the real estate agent terminal 330 provides a real estate brokerage service providing server 320 with proof of a certified real estate agent license and brokerage location to perform membership registration.

In a transaction for a real estate sale, the real estate brokerage service providing server 320 receives and stores at least one transaction condition for an article registered in the user terminal 310, a designated brokerage fee range or designated brokerage commission information, and stores it, Create a dedicated listing list. The real estate agent terminal 330 can view the brokerage-only property list by specifying a condition, and determines the brokerage commission desired for the brokerage commission range information of the goods provided by the user terminal 310 and offers a reverse proposal, or a designated brokerage fee If you wish to broker for the item, request brokerage for the item.

The real estate brokerage service providing server 320 transmits at least one brokerage fee information selected and delivered by the real estate agent terminal 330 to the user terminal 310, and brokerage commission information specified according to the selection in the user terminal 310 It provides information about the object to be traded, including the block chain-based sale information providing unit 340 .

The block chain-based property information providing unit 340 receives information such as brokerage information, brokerage fee information, transaction condition information, address address of the object, and photos determined for a specific transaction target object from the real estate brokerage service providing server 320, and blocks It is recorded on the chain, the NFT in which the above-described information is recorded is generated, and the list is provided to at least one user terminal 310 after registration as an official listing in the user-only listing.

The NFT generated by the block chain-based property information providing unit 340 includes or is updated with owner change history information, the first acquisition date information of the object, a certified copy of the register, transaction price information, and defect repair history information for the object, and at least One user terminal 310 may check the overall history and state information about the object through NFT. The NFT is issued as a single token for the object, and it is impossible to register the same item in the real estate sale search system 300 because it is not issued in duplicate.

Accordingly, in the transaction of real estate for sale, it is possible to search and browse only for the actual sale without a false sale, and transparently proceed with the transaction of the real estate for sale. In addition, it is possible to safely proceed with the transaction of real estate sales through the history information recorded in the NFT.

7 is a block diagram of a computing device of a node according to an embodiment of the present invention.

Referring to FIG. 7 , the computing device 1000 of a node according to an embodiment of the present invention includes a processor 1100 and a memory 1200 , and the processor 1100 includes one or more cores and a graphic processing unit and/or Alternatively, it may include a connection path (eg, a bus, etc.) for transmitting and receiving signals with other components.

The processor 1100 according to an embodiment executes one or more instructions stored in the memory 1200, thereby executing the operation of the blockchain-based real estate listing search system described in relation to FIGS. 4 to 6 .

For example, the processor 1100 collects information about user identification authentication and private key generation generated in one or more nodes by executing one or more instructions stored in the memory, and generates a transaction based on the collected information. Provides related information for at least one node.

Meanwhile, the processor 1100 may further include a random access memory (RAM) and a read-only memory (ROM) for temporarily and/or permanently storing signals (or data) processed therein. . In addition, the processor 1100 may be implemented in the form of a system on chip (SoC) including at least one of a graphic processing unit, a RAM, and a ROM.

The memory 1200 may store programs (one or more instructions) for processing and controlling the processor 1100 . Programs stored in the memory 1200 may be divided into a plurality of modules according to functions.

The operations of the system described in relation to the embodiments of the present invention may be implemented directly in hardware, as a software module executed by hardware, or by a combination thereof. A software module may include random access memory (RAM), read only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, hard disk, removable disk, CD-ROM, or It may reside in any type of computer-readable recording medium well known in the art to which the present invention pertains.

The components of the present invention may be implemented as a program (or application) to be executed in combination with a computer, which is hardware, and stored in a medium. Components of the present invention may be implemented as software programming or software components, and similarly, embodiments may include various algorithms implemented as data structures, processes, routines, or combinations of other programming constructs, including C, C++ , Java, assembler, etc. may be implemented in a programming or scripting language. Functional aspects may be implemented in an algorithm running on one or more processors.

It is to be understood that the above-described embodiments are illustrative in all respects and not restrictive, the scope of the present invention being indicated by the following claims rather than by the foregoing detailed description. And it should be construed that all changes and modifications derived from the meaning and scope of the claims as well as equivalent concepts are included in the scope of the present invention.

100: decentralized network
110-170: nodes
200: Blockchain
210, 220, 230: block
300: real estate listing search system
310: at least one user terminal
320: real estate brokerage service providing server
321: storage
322: transmission unit
323: member management department
324: Product information management department
330: at least one intermediary terminal
340: block chain-based property information providing unit

Claims (3)

In the real estate sale search system comprising at least one user terminal connected through a network, a real estate brokerage service providing server, at least one real estate agent terminal, and a block chain-based sale information providing unit,
at least one user terminal specifying a transaction condition of a real estate product and a brokerage fee range and transmitting the information of the real estate product to the real estate brokerage service providing server;
A real estate brokerage service providing server that performs a self-authentication procedure for the at least one user terminal, and generates and provides real estate sale information including the transaction conditions and the specified brokerage fee range as a real estate listing for a real estate agent;
at least one real estate agent terminal for reading the list of real estate agents only, determining a desired brokerage commission corresponding to the designated brokerage commission range, and delivering it to the real estate brokerage service providing server; and
Information including brokerage information, brokerage fee information, transaction condition information, and address information of the object determined for the real estate for sale provided from the real estate brokerage service providing server is recorded on the block chain, and the information is recorded on the NFT ( A block chain-based property information providing unit that generates and provides a list of user-only properties in which the relevant transaction target real estate property information is registered and provided;
The NFT is issued as a single token for the corresponding transaction target real estate sale,
The block-chain-based property information providing unit updates the owner change history information, the first acquisition date information of the object, the registered copy information, and the transaction price information to the NFT, a block-chain-based real estate property search system. The method of claim 1,
The range of the brokerage fee specified in the at least one user terminal is a specified brokerage commission rate or a brokerage commission rate including upper and lower limits, a block chain-based real estate listing search system. The method of claim 1,
The real estate brokerage service providing server receives, from the at least one real estate agent terminal, certified real estate agent certificate information and proof document information about the brokerage location, and approves it as a real estate agent member terminal, a block chain-based real estate listing search system.

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