WO2020185188A1

WO2020185188A1 - Online real estate market platform, based on blockchain technology

Info

Publication number: WO2020185188A1
Application number: PCT/UA2019/000039
Authority: WO
Inventors: Telman Eldar-Oglu ABBASOV
Original assignee: Abbasov Telman Eldar Oglu
Priority date: 2019-03-11
Filing date: 2019-03-28
Publication date: 2020-09-17

Abstract

The present invention is an online resourse designed to unite all participants in the real estate market and organize a full cycle of all types of real estate deals online with the possibility of remote operations for buying and selling and investing in real estate.

Description

ONLINE REAL ESTATE MARKET PLATFORM, BASED ON BLOCKCHAIN

TECHNOLOGY

FIELD OF THE INVENTION

The present invention generally relates to digital data processing systems based on the technology of chain of transaction blocks and the distributed database (the so- called blockchain technology) and can be used to operate the web platform (hereinafter referred to as the platform), which communicates via the Internet with the user devices of registered users and allows the implementation of a number of services for registered users connected with real estate objects or development projects data.

TERMS

The term "data on real estate objects" used herein, refers to the "listing" of real estate objects, that is, a list of real estate objects transmitted by users who have such a function to a platform database. In this listing, real estate objects are represented by their type (apartments, houses, etc., i.e. objects of immovable property, inextricably linked with the land plot in which they are located) which you need to sell or lease. For each of the object, standardized information of the real estate object is displayed for search and identification.

The term "data on development projects" used herein, includes parameters of a multi-apartment project, the purpose of which is the sale of apartments for the financing of construction, or data on a business project that collects investments in the form of a loan, or data on a business project for its sale.

The term "user client" used herein, includes a web service, a software wallet application, or a software mobile application that are done for operations on a platform payment system, or is part of a network of blocks, and executed to achieve consensus when writing data in a block diagram of a chain. The term "blockchain" used herein, includes distributed databases that support an ever-expanding list of ordered digitized data records called "blocks". Each of the block may contain a timestamp and a link to the previous block. The payment system implies the achievement of a decentralized consensus with the help of the blockchain.

The term "digital contract" used herein, includes a set of protocols for digital verification and agreement or contract performance. Digital contracts carry out transactions that can be tracked and are irreversible. Digital contracts can be created and maintained in blockchain networks of the platform. Digital contracts are the main contracts used on the platform, namely for real estate transactions or for investing in a development project or for rendering services related to a real estate or for generating tokens. Digital contracts can be executed as dynamic digital contracts, such as those defined and executed according to the provided algorithm from the registered user.

The term "token" used herein, includes hash code, which is a unique identifier of operations performed between users of the platform. The specified hash code is stored in the token register. Tokens are issued and tracked in the blockchain network of the platform.

The term "internal accounting unit of the payment system (clearing currency)" used herein, provides a form of an accounting unit, other than a physical currency. Such a unit has properties similar to physical currencies, but involves instant transactions and unlimited transfer of ownership. For example, a type of clearing currency is a virtual currency or cryptocurrency.

Tokens or clearing currency can be issued in exchange for physical currency (for example, US dollars, euros, British pounds, Swiss francs, Ukrainian hryvnia, etc.).

BACKGROUND OF THE INVENTION Application of Blockchain technology in various fields of technology for data exchange and processing is determined by its reliability, security, low cost of transactions, the possibility of fast data operations, including financial, without intermediaries. Taking into account a large amount of data that accompanies the real estate market, the blockchain technology has great potential for application, considering its adaptation for real estate market data.

The world real estate market has a number of specific features - the scarcity and adequacy of market information, the localization of supply and demand, the complex operation and conclusion of deals with foreign customers, where the information about commercially attractive objects and projects, as well as the value of deals for real estate , known to a limited number of Internet users. In addition, the search for service specialists related to real estate in another country is also complcated.

The purpose of the created platform is to facilitate the exchange of data and execution of transactions, including financial, for all participants of the real estate market: buyers, brokers, investors, developers, construction companies, etc.

Known platform of digital data exchange that built on blockchain network using digital wallets and private digital cryptocurrency to provide an optimized and automated process of buying and selling property items, including investment property objects (WO 2018227092 Al, published on 13.12.2018). The platform is suitable for data exchange with a set of user devices of investors, bank platforms, real estate databases and private blockchain network, which is an integral part of the platform. The platform is suitable for the sale of real estate by users (for example, investors), for the conversion of assets to real estate objects in digital form or tokens that can be bought and sold as online products. For this, the platform contains at least one processor, data storage device, user interfaces, banking platforms, and asset database. The platform includes its own blockchain network or interacts with other private blockchain network. Private blockchain network contains distributed databases and interacts with the platform by recording, authenticating, and achieving consensus in a payment system for the implementation of platform transactions. The blockchain network with a chain of transaction blocks is managed autonomously with the use of a temporary (P2P) network and a distributed server of the time marker service (time stamp server). Banking platforms contain servers and database aggregates that allow you to conduct online transaction of financial operations or provide information related to financial indicators of an investor or user. Databases include servers that provide information related to real estate objects and relevant metadata, such as property rights or property documents. Banking platforms and databases have open APIs through the communication module. The platform also contains real estate asset controller module, digital wallet controller module, real estate order controller module and blockchain controller module.

The drawback of the known platform is the complication of financial transactions related to real estate, due to the use of third-party banking platforms. At the same time, such payment platforms do not have a stable mechanism for reaching consensus in the payment system, which leads to a reduction in the efficiency of generating the chain of transaction blocks in the blockchain networks. One more disadvantage is the lack of use of data on real estate objects, including digitized data, when generating an internal accounting unit of the payment system to improve the efficiency of the payment system.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to provide an online real estate market platform that simplifies financial transactions for real estate objects and increases the reliability and speed of their implementation by improving the efficiency of generating the chain of transaction blocks in the blockchain networks. The present invention allows to improve the multipurposeness of the platform by increasing the services for real estate. The present invention also allows to simplify operations on real estate by introducing an additional tokenization system, improving the efficiency of the search for real estate objects and automating the user search system of the platform to create a digital contract for operations with real estate.

According to an ambodiment of the present invention, an online real estate market platform, based on blockchain technology, comprising at least one processor device communicatively linked to a computer memory and at least one means of storing and/or reading digital data. Said processor device, computer memory and means of storing and/or reading digital data are adapted to control: i) an API server system, linked to at least one distributed platform database, based on a blockchain- core of the platform, comprising at least a virtual machine module of the platform and a full-node module, combined into a local area network and connected via the Internet with a set of platform nodes, ii) an API interface, that is adapted for interaction of API servers with each other and with a set of user clients through a web server, iii) at least one payment system server, built using a hybrid blockchain network, which is based on a blockchain core of the payment system and comprising at least a module of the virtual machine of the payment system, located on the payment system server and designed for generation of the internal accounting unit of payment system and also connected via the Internet with a set of master-nodes of the payment system, located on the payment system server and a payment system nodes, executed as a software application, located on registered user clients, iv) at least one database of the payment system, located on the payment system server, v) a set of users clients, registered through the API interface on said online platform and suitable for two-way exchange of data and API requests with the distributed platform database and with the database of the payment system and with the blockchain-core of the payment system. The blockchain core of the payment system is suitable to achieve consensus in the payment system by: obtaining transaction data in a payment system, calculating at least one control hashing record by the module of the virtual machine based on transaction data, sending the request to the node and the master-node of the payment system. Said request is for calculation of a hashed record. Said request contains transaction data. The achieving consensus in the payment system also includes a receiving the calculated hashed record from the module of the virtual machine and confirmation of the transaction from nodes and master-nodes of the payment system, checking hashed record, received from the node and the master- node payment system; making a hashed record to a distributed platform database; sending transaction confirmation to the user client. The virtual machine of the platform is equipped with a working area suitable for storing the addresses of the active platform nodes. The virtual machine of the platform is suitable for obtaining data from the API server system. The blockchain core of the platform is suitable for data exchange with the blockchain core of the payment system by encrypted data exchange between the virtual platform machine and the virtual machine of the payment system. The blockchain core of the platform contains an integrated tokenization system suitable for generating a real estate object token and/or a development project token by creating a digital contract based on the data of real estate object and/or data of development project. Said data is received by the distributed platform database from the set of user clients through the API. The integrated tokenization system is suitable for managing a token register that contains token data and operations with them. The API server system is suitable for creating a digital contract for the sale of real estate or for investing in a development project or for rendering services related to real estate.

The present invention allows to increase the speed and simplicity of financial transactions with real estate objects and to ensure the reliability of financial transactions and their confirmation of security through the use of their own blockchain-core of the payment system when creating a hybrid blockchain network, that is, a decentralized blockchain network with a virtual machine of the payment system, and the maintenance and unchangeability of transaction data between platform elements and registered users. At the same time, the use of the platform in the form of an on-line Internet resource for bringing together all real estate market participants allows to carry out a full cycle of all types of operations with real estate objects in electronic form and with the use of remote sale and purchase operations and investments in real estate objects with the simultaneous simplification of data exchange between users of the platform.

The use of tokenization system in the implementation of platform functions introduces such an indivisible unit as a token, which is essentially a unique identifier of legal relationships between users of the platform. Simplifying the exchange of data between platform elements is accomplished by using the API server system as an interface of interaction with servers in a client-server framework and performing all data exchange processes between platform elements, including distributed databases needed to create transaction blocks, and client devices , operating under different operating systems and platforms. The platform uses its own blockchain core to duplicate the recording of all key data and their changes in the chain of blocks, which ensures the integrity of the information and its relevance. That is, a distributed platform database simplifies the work of the platform, and also takes part in the record of the chain of transaction blocks. Using the centralized blockchain system allows you to control the access to platform nodes and independently select their owners. Using the blockchain system allows the platform to monitor the history of changes in the distributed platform database and make it impossible to make any changes to the data without recording the very fact of these changes, which allows you to control the relevance of data, protects against making unauthorized changes and irreversible deletion of data. Also, recording key data in the chain of blocks of transaction gives access to all previous versions of the data. Using its own payment system based on the internal accounting unit of payment system (clearing currency) and the hybrid blockchain system, it allows the platform to function without restrictions imposed by different countries of users, transactional delays and conversion costs. Integration of the described payment system into a platform simplifies the functioning of the payment system, as well as simplifies the mechanism for registration of new users due to the integration with the mechanism of user registration on the platform. The use of a virtual machine, as a key element of the payment system, allows you to receive input data from the API server system and initiate the process of reaching consensus in the payment system and records in the blockchain system, as well as execute the logic of the payment system processes.

Applying a separate blockchain-core of the platform and the blockchain-core of the payment system with its own virtual machines carries out the control of financial transactions related to user operations on the platform. Each action on a platform that requires a financial transaction is only made after receiving confirmation from the virtual machine of payment system that the transaction was made. Accordingly, all operations are associated with the change of the owner of the token, also can be made only after receiving confirmation by the virtual machine of platform from the virtual machine of the payment system. The interaction of virtual machines occurs directly without the participation of intermediaries, which is achieved increasing the level of security of operations through the platform.

According to another embodiment of the invention, the token of the property object and/or the token of the development project is a unique hash record in the token register, which allows the use of blockchain technology for an integrated tokenization system.

According to another embodiment of the invention, the integrated tokenization system is suitable for setting up a token value through a user client when creating a digital contract, which simplifies the operation of the tokenization system and improves its reliability and security. According to another embodiment of the invention, the integrated tokenization system is suitable for generating the real estate object token when making a real estate object sale proposal, which further simplifies the operation of the tokenization system. According to another embodiment of the invention, the integrated tokenization system is suitable for generating the development project token when receiving a digitized data of a development project from the user client, which simplifies the identification of real estate on the platform, as well as increases the security of transactions associated with this property. According to another embodiment of the invention, the data on the real estate object include at least digitized images of the real estate object and its agreement type and location and technical parameters and the value of real estate object, which increases the number of created blocks of transactions in the blockchain system and makes its work more efficient. According to another embodiment of the invention, the blockchain-core of the payment system is executed to achieve consensus in the payment system either when sending or receiving payments by the users client or for automatic withdrawal of payments in the course of execution of the created digital contract.

According to another embodiment of the invention, the registration of the user client through the API interface further includes a verification of users by transmission of digitized and verified documents in accordance with the KYC procedure. When applying the mechanism of registration of the platform users, an extended KYC integrated system (Know Your Customer), the payment system uses not only its database but also the platform database through the API server system, which further simplifies the mechanism for registering new users.

According to another embodiment of the invention, the API server system is suited to execute the service of viewing the data of the user clients and a two-way exchange of data between them via the API server system, which enhances the versatility of the platform and automates the platform user search system.

According to another embodiment of the invention, the API server system is suitable for executing a token transaction service for the user clients, which further increases the efficiency of the payment system.

According to another embodiment of the invention, the API server system is suitable for executing a searching and sorting and displaying digitized real estate data or data of development project from the distributed platform database, which additionally enhances the versatility of the platform and automates the search system data for real estate or development projects.

According to another embodiment of the invention, the API server system is suitable for executing transactions with the internal accounting unit of payment system and with the token of real estate object and with the token of development project, which further improves the efficiency of the payment system.

According to another embodiment of the invention, the blockchain-core of the platform is suitable for recording of data into the blockchain of such processes as adding and changing user clients or adding and modifying the property or adding and changing a development project or adding and modifying the token register data, which additionally increases the number of blocks of transactions in the blockchain system and makes its work more efficient.

According to another embodiment of the invention, the API server system is suitable for automatically selecting users as members of a digital contract based on user data or data of a real estate object/ development project or a user rating on a platform defined by the total number of user points, which enhances the automation of the process of concluding digital contracts for operations with real estate or development projects or services provided through the platform.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a general scheme of the server part of computer system of the platform, FIG. 2 is a functional diagram of the user interaction with the API server system through the API interface,

FIG. 3 is a functional diagram of blockchain network of the platform,

FIG. 4 is a functional scheme of the payment system,

FIG. 5 is a functional scheme of the blockchain-core of the payment sy stem.

The provided drawings as well as further detailed description of the embodiments do not limit other possible embodiments of the platform according to the invention, but only explain its essence.

DETAILED DESCRIPTION OF THE EMBODIMENTS

As shown in FIG. 1, online real estate market platform contains a processor device 1 communicatively coupled to computer memory 2 and means of storing and/or reading digital data 3. As the processor device 1 , a computer processor or microprocessor, or a combination of them, can be used. As the computer memory 2, random access memory, a permanent storage device, flash memory, and the like can be used. As the means of storing and/or reading digital data 3, there may be a hard disk drive, an optical drive, or similar. Communicative connection between the processor device 1, the computer memory 2 and the means of storing and/or reading digital data 3 is realized through a communication bus, for example, a motherboard 4 of a computer system 5. The computer system 5 can be executed as a server part of the platform operating under the control of the Linux operating system and connected to a local network 6 and/or the Internet 7 via a wired or wireless communication interface.

Communicatively connected the processor device 1, the computer memory 2, and digital data storage and/or reading 3 are adapted to control: an API server system 8, an API interface 9, a payment system server 10, a database of the payment system 11, located on the payment system server 10, and a set of user clients 12.

The API server system 8 is suitable for creating a digital contract for the sale of real estate or for investing in a development project or for providing services related to the real estate. To do this, the API server system 8 is connected to distributed platform databases 13, based on blockchain-core of the platform 14. The blockchain core of the platform 14, which is shown in FIG. 3, consists of virtual machine module of the platform 15 and a full node module 16, connected to a local network 17 via the Internet 7 with a set of platform nodes 18. The platform node 18 is executed as a software application, located on the registered user clients 12 and accessible through the administration of the platform. Nodos of decentralized networks, as a rule, contact with P2P protocols to exchange information about blocks and transactions. The node of the platform 18, depending on its type, stores only part or all of the blockchain data. In particular, the full node stores all the data of the blockchain and is fully synchronized with the blockchain network. The blockchain-core of the platform 14 is suitable for data recordings in blockchain of such processes as adding and changing user clients 12 and/or adding and modifying a real estate object/development project and/or adding and modifying registry data of tokens. The result of running a digital contract when receiving a confirmation from the virtual machine module of the platform 15 is a smart deal.

The API interface 9 is suitable for interaction of the API servers system 8 with one another and with the set of user clients 12 through a web server 19. The server system API 8 is suitable for performing the service of viewing of user clients 12 and for the two-way data exchange between them via the API server system 8. API server system 8 is suitable for executing token transaction service for user clients 12.The API server system 8 is suitable for performing the search, sorting and displaying of real estate data, the digitized data of which contains the distributed platform database 13. The API server system 8 is suitable for performing the search service, sorting and displaying the data of the developer project. The API server system 8 is suitable for executing transactions with the internal accounting unit of the payment system and with the token of the real estate object or development project.

The API server system 8 is suitable for automatically selecting users as a digital contract participant based on user data and real estate object/development project, and a user rating on a platform determined by the total number of user points. The automatic selection system operates on the basis of key user data (information on their professional activities, geolocation and specialization) and the internal user rating. The system compares user data with the object data of digital contract and, based on these data, generates a list of potential participants in the digital contract. This list is ranged based on the user rating. The first users on the list are sent a proposal to participate in the digital contract. The user who created the digital contract is offered the first members for approval. Platform rating is the sum of scores for each user of the platform and is determined by the user activity on the platform and ratings from other users. The rating decreases in case of violation of the rules of the platform, negative reviews and the absence of user activity.

The payment system server 10 is suitable for use with a hybrid blockchain payment system network, based on a blockchain-core of the payment system 20. The blockchain network of the payment system consists of a module of the virtual machine of the payment system 21 located on the payment system server 10. The virtual machine of the payment system 21 is intended for generating the internal accounting unit of the payment system. It is connected via the Internet with a set of nodes of the payment system 22 and master nodes of the payment system 23 located on the payment system server 10.

The set of user clients 12 is registered through the API interface 9 on an online platform. The set of user clients 12 is suitable for two-way data exchange and API- requests with the distributed platform database 13, the payment system database 11, and the blockchain-core of the payment system 20.

The blockchain-core of the payment system 20 is implemented to achieve consensus in the payment system, the process of which is shown in FIG. 5, in particular, when the user client 12 sends or receives payments or automatically withdraws payments when performing a digital contract. To do this, the blockchain-core of the payment system 20 is suitable for obtaining transaction data in a payment system, calculating at least one control hashing record by a module of the virtual machine of the payment system 21 based on transaction data, sending the request to the nodes of the payment system 22, and master nodes of the payment system 23, which contains transaction data, the calculation of the hashed record, receipt by the virtual machine module of the payment system 21 of the calculated hash record and confirmation of the transaction from the node of the payment system 22 and the master-node of the payment system 23, checking the hash record received from the node of the payment system 22 and the master-node of the payment system 23, making a hash record to the distributed platform database 13, sending confirmation of the transaction to the user clients 12.

The virtual machine of the platform 15 is equipped with a working area suitable for storing the addresses of active nodes 18. The virtual platform machine 15 is suitable for obtaining data from the API server system 8. The blockchaine-core of the platform 14 is suitable for exchanging data with the blockchain-core of the payment system 20 by encrypted data exchange between the virtual machine of the platform 15 and the virtual machine of the payment system 21. The blockchaine- core of the platform 14 contains an integrated tokenization system suitable for generating the real estate token data and/or the development project token by creating a digital contract, based on the data on the real estate object/the development project, received on the distributed database platforms 13 from the set of user clients 12 via the API interface 9, and managing the token register, which contains token data and operations with them.

Real estate object/development project token is a unique hash record in the token register. Integrated tokenization system is suitable for installing through the user's client 12 the cost of a token when creating a digital contract. The integrated tokenization system is suitable for generating the real estate object token when making proposals for the sale of the real estate, or the development project token upon receipt of the digitized data of the development project from the user client. The data on the property includes digitized images of the real estate object its type of agreement, geolocation, technical parameters and the value of the property.

The platform described above, is built on the blockchain technology, and can be arranged to render services on real estate objects in the following way.

The platform is made as an online resource on the Internet, which can have such services as the community, trading platform for token trading, listing of real estate objects, listing of development projects, integrated payment system. The community service has a form of web page with a list of registered users, the ability to open a personal profile of each registered user and view its public information. An integral part of community service is the chat system for messaging between registered users. The trading platform for token trading is an electronic exchange for exchanging the internal accounting unit of the payment system by tokens. The Real Estate Listing Service is a web page that displays real estate objects digitized by registered users. A website listing of development projects displays a list of projects available for investment on the platform. An integrated payment system provides the exchange and the process of investing of an internal accounting unit to provide financial transactions. In this case, the server part of the platform uses its own blockchain-core of the platform 14 to create a centralized blockchain network, which records all key operations on the platform, except for the financial transactions, fixing of which is provided by the payment system.

The API interface 9 interacts with the API server system 8 within the client-server model, which provides execution of all processes on the platform (see Figure 2). The API interface 9 can be built on the Express framework and implemented in the Node.js programming language. Data is transmitted in JSON format. Standard HTTP methods such as GET, POST, DELETE, etc are used. Standard HTTP statuses, such as 200 OK, 404 Not Found, and so on are used. In case of a successful operation, the server sends an HTTP status of 200 OK and the required information in the response body. Depending on the kind of error that occurred during the request processing, the server sends HTTP status 403 (access was limited), 404 (resource not found), 409 (one or more values operated within the scope of the request is not valid). For each expected platform error, unique error code is represented in a six-digit format: the first three digits correspond to the HTTP status for which the content of the error occurred, and the second three digits is a unique number that is incremented for each new error of the given type. In addition to the data transmitted by the user client / server directly in the request body, HTTP headers, embedded and designed for the user are used (developed directly for this platform). For example, using the 'x-www-access^' header (which transmits a special, unique access key for each user), the platform defines the user and the level of its privileges within the scope of this request. The API interface 9 is also used to interact with servers in the context of specifically designed tasks, such as creating a backup of the database.

User clients 12, who use different operating systems on different platforms, interact with the system through software - the web server 19, which is an API (application programming interface). With this software interface, a request is made to the API server 8 with the distributed platform databases 13. Receiving data from the distributed platform databases 13, the API server system 8 returns them to the user client 12.

For data storage on the platform, for the purpose of structures flexibility of the objects used, as well as scalability and distribution simplicity, a non-relational, document-oriented management system for distributed platform databases 13 is used.

The security of platform functionality is provided by a system that is divided into three segments: 1) a code-level security segment that protects the web server 19, its internal processes and API endpoints; 2) a security segment at the level of the software components of the platform, which provides protection against unauthorized access to databases and servers; 3) a security segment at the administrative (managerial) level that provides access control to the administrative panels of the hosting, servers, repositories, user personal data, etc.

Blockchain-core of the platform 14 to duplicate records of all key data and their changes in the chain of transaction blocks is used, which preserves the integrity of the information and its relevance. That is, the blockchain-core of the platform 14 uses the distributed platform database 13 to simplify the work of the platform and to record the chains of transaction blocks.

The work of the blockchain network is accomplished through the interaction of two modules: the virtual machine module of the platform 15 and the full node module 16, as shown in FIG. 3. The code of the given module contains a description of the interaction and the mechanism for generating unique hash records. Node is a full member and the main unit of the blockchain network, controlled by the virtual machine module of the platform 15. The platform node 18 is a software application that installs on a suitable computer controlled by the operating system, which is accessible by launching "Node.js", written in the programming language "JavaScript". To operate such an application, the computer device must have access to the Internet, through which the application constantly receives and processes data, using the computer resources and sends the result of processing on the network to the remote server part of the computer system 5, on which the virtual machine module of the platform 15 is installed. The platform node 18 has its own workspace, which stores the chain of encrypted blocks, as well as the number of existing blocks and the hash of the last block. In the course of the work, the platform nodes 18 receive data about events initiated by the virtual machine module of the platform 15, perform voting initiated by the virtual machine module of the platform 15, synchronize with other platform nodes 18, and download from them the latest version of the chain of blocks, record blocks confirmed by voting in an encrypted form. Virtual machine module of the platform 15 is executed as an application, written in the programming language "JavaScript" and installed on the server part of the computer system 5. This application continually sends and receives data from Node installed on other computers connected to the server over the Internet. The virtual machine module of the platform 15 is used as the "controller" of the blockchain-network or the executive machine of the logic of the platform's operation. The virtual machine module of the platform 15 has its own workspace, which stores the addresses of active nodes. In order to operate, the virtual machine module of the platform 15 receives data from the API interface 9 with the subsequent control of the blockchain network by initiating a vote in the network and collecting results, adopting a decision of confirming the transaction blocks, creating an event of adding an approved transaction block, followed by execution the logic of the platform's operation by implementing high-level business processes, using platform modules.

When receiving data from the platform API (the data specified by logic of the API interface 9 for the record into the blockchain), the virtual machine module of the platform 15 sends the time and date of receipt of the specified data together with the data of the platform nodes 18, thereby initiating a vote to add this data to the transaction chain. When new data is received with each node of the platform 18 a unique hash code is calculated. Upon completion of the calculation of the hash code, using each node of the platform 18 that participated in the calculation, the hash code is sent back to the virtual machine module of the platform 15. When received, the virtual machine module of the platform 15 defines the "correct" hash code among the hash codes received. The voting priority has a full node module 16, that is, a node that can access the virtual machine module of the platform 15 by sending requests to an IP address of 127.0.0. {1 ... 254} / 24) type. If such a node is missing in the network, the "only true" hash code is a 50% + 1 assembled version of identical votes.

The nodes of the platform 18 who have not sent the hash code are excluded from the list of participants for the next voting and, if possible (the node is not disabled and can accept requests), send them a departure signal to the synchronization cycle according to the data stored by the full node module 16. Such nodes are included in the voting again only after full synchronization. The nodes of the platform 18 who sent the "wrong" hash code from the virtual machine module of the platform 15 receive the departure signal to the synchronization cycle according to the data stored by the full node module 16.

The data that has relation to the following processes has been entered to blockchain network of the platform, namely: adding and changing users on the platform, adding and modifying real estate on the platform, adding and modifying the platform development projects, operations with the token register (token characteristics , purchase and resale of tokens).

The payment system integrated into the platform is shown in FIG. 4 and uses the internal accounting unit of payment system (clearing currency) and the hybrid blockchain network. For the functioning of the payment system of the platform, the blockchain core of the payment system 20 is used, the personal profile of the user, integrated into the platform, the program application "thin" and "thick" wallet, performed as software applications for a personal computer running under management of the Windows operating system, as well as for Android or IOS- based computer devices that interact with platform users through mobile devices, including instant messaging and media files, and perform the functions of "thin" wallet.

In order to carry out any operations in a payment system, the user must log into his account using one of the above options of the user client 12. To facilitate the functioning of the payment system, the mechanism for registration of new users of the payment system has been combined with the mechanism for registering users on the platform. That is why, the data used to access the payment system is the same with the data used when registering on the platform. The platform user registration mechanism has been expanded with the integrated KYC system. Due to the use of such a user registration system, the payment system uses not only the database of the payment system 11, but also the distributed platform database 13 through the API server system 8.

User registration on the platform is performed by obtaining the user's login information (at least email and password) by the API server system 8 via the API interface 9 and sending a confirmation of registration in response with the subsequent selection by the user of its functional role on the platform (buyer, owner of real estate, investor, broker, developer, appraiser, architect, notary, expert). After selecting the functional role on the platform, they form the user profile by entering the user data according to the selected functional role when filling out the web form through the web server 19. After confirming the data, the user gets access to the platform services in accordance with the selected functional role.

With the help of the web server 19, an access of registered users to the list of real estate objects (listing) is performed, which has a flexible filtering system and intelligent search, which, in forming the response, takes into account not only the request, but also the open personal data of the user, the viewing history and its previous searches.

The payment system provides such platform services as replenishment of the user's personal account, sending payments, receiving payments, writing off commissions, freezing funds, automated withdrawal of funds, receiving payment for network support.

Blockcain-core of the payment system 20 consists of the virtual machine module of the payment system 21 and the node of the payment system 22 and the master- node of the payment system 23. A key element is the virtual machine module of the payment system 21, receiving input data sent to it by the system server API 8 or the application of "thick" or "thin" wallet, followed by initiation of the voting process and record in blokchain, which is the same process, described above. The module of the virtual machine of the payment system 21 is installed on the server of the payment system 10. The node of the payment system 22 and the master- node of the payment system 23 are the main components of the blockchain network of the payment system. The node 22 is part of a "thick" wallet and has an open access. The master node 23 is a separate software application installed on the server of the payment system (10) or can be installed on a server or trusted computer device.

In order to reach consensus in the payment system, voting, using the module of the virtual machine of the payment system 21 is initiated. When receiving the input data, the virtual machine module of the payment system 21 sends it to the node 22 and the master-node 23, for the hashing and forming of the block of transactions. The node 22 and the master-node 23, when receiving new data from the virtual machine module of the payment system 21, runs the process of generating hashed record and block formation. The node 22 and the master-node 23 send the generated hash entry for verification to the virtual machine module of the payment system 21. The virtual machine module of the payment system 21 in parallel with this process also generates its own variant of the hash record, with which it compares the received hashed records. If the hashed request id correct, the virtual machine module of the payment system 21 sends a command to the node 22 and the master-node 23 to add a block transactions into the chain. The node 22 and the master-node 23 that sent the wrong hashed entry, the virtual machine module of the payment system 21 gives the command for re-synchronization of the chain. The transaction is considered committed once the virtual machine module of the payment system 21 will get five correct answers from the nodes: at least two answers to the node 22 and at least one response from the master-node 23.

Moreover, the transaction block added to the chain has the following items in its structure: the field with the block index, the hash of the record of the previous block, the temporary mark, the transaction data, hashed block record. In this case, the hashed block record is formed on the basis of such parameters as the generated block index, the previous block index, the time of creation of the block and the content of the block.

When operating on a platform, users can receive reward-incentives for supporting the operation of the blockchain network of the payment system, using the above- described "thick" wallet application. Each node 22 is tied to a specific user profile and is linked to a unique account. In the process of reaching a consensus on an account linked to the node 22, which sent the first correct answer and is not a master-node 23, the amount of remuneration is calculated.

For payments, user client 12 interaction with the API server system 8, platform database 13 and the payment system database 11 , as well as the blockchain-core of the payment system 20 are implemented. In this case, the user client 12 interacts with the blockchain core of the payment system 20 by transmitting and receiving data over a secure HTTPS connection.

Claims

1. An online real estate market platform, based on blockchain technology, comprising at least one processor device communicatively linked to a computer memory and at least one means of storing and/or reading digital data, said processor device, computer memory and means of storing and/or reading digital data are adapted to control: i) an API server system, linked to at least one distributed platform database, based on a blockchain-core of the platform, comprising at least a virtual machine module of the platform and a full-node module, combined into a local area network and connected via the Internet with a set of platform nodes, ii) an API interface, that is adapted for interaction of API servers with each other and with a set of user clients through a web server, iii) at least one payment system server, built using a hybrid blockchain network, which is based on a blockchain core of the payment system and comprising at least a module of the virtual machine of the payment system, located on the payment system server and designed for generation of the internal accounting unit of payment system and also connected via the Internet with a set of master-nodes of the payment system, located on the payment system server and a payment system nodes, executed as a software application, located on registered user clients, iv) at least one database of the payment system, located on the payment system server, v) a set of users clients, registered through the API interface on said online platform and suitable for two-way exchange of data and API requests with the distributed platform database and with the database of the payment system and with the blockchain-core of the payment system, the blockchain core of the payment system is suitable to achieve consensus in the payment system by: obtaining transaction data in a payment system, calculating at least one control hashing record by the module of the virtual machine based on transaction data, sending the request to the node and the master-node of the payment system, said request is for calculation of a hashed record, said request contains transaction data; receiving the calculated hashed record from the module of the virtual machine and confirmation of the transaction from nodes and master-nodes of the payment system, checking hashed record, received from the node and the master-node payment system; making a hashed record to a distributed platform database; sending transaction confirmation to the user client; wherein the virtual machine of the platform is equipped with a working area suitable for storing the addresses of the active platform nodes and the virtual machine of the platform is suitable for obtaining data from the API server system, and the blockchain core of the platform is suitable for data exchange with the blockchain core of the payment system by encrypted data exchange between the virtual platform machine and the virtual machine of the payment system, wherein the blockchain core of the platform contains an integrated tokenization system suitable for generating a real estate object token and/or a development project token by creating a digital contract based on the data of real estate object and/or data of development project, said data is received by the distributed platform database from the scope of user clients through the API, the integrated tokenization system is suitable for managing a token register that contains token data and operations with them, and the API server system is suitable for creating a digital contract for the sale of real estate or for investing in a development project or for rendering services related to real estate.

2. The platform in accordance with claims 1 wherein the token of the property object and/or the token of the development project is a unique hash record in the token register.

3. The platform in accordance with claim 1 wherein the integrated tokenization system is suitable for setting up a token value through a user client when creating a digital contract.

4. The platform in accordance with claim 1 wherein the integrated tokenization system is suitable for generating the real estate object token when making a real estate object sale proposal.

5. The platform in accordance with claim 1 wherein the integrated tokenization system is suitable for generating the development project token when receiving a digitized data of a development project from the user client.

6. The platform in accordance with claim 1 wherein the data on the real estate object include at least digitized images of the real estate object and its agreement type and location and technical parameters and the value of real estate object.

7. The platform in accordance with claim 1 wherein the blockchain-core of the payment system is executed to achieve consensus in the payment system either when sending or receiving payments by the users client or for automatic withdrawal of payments in the course of execution of the created digital contract.

8. The platform in accordance with claim 1 wherein the registration of the user clients through the API interface further includes a verification of users by transmission of digitized and verified documents in accordance with the KYC procedure.

9. The platform in accordance with claim 1 wherein the API server system is suited to execute the service of viewing the data of the user clients and a two-way exchange of data between them via the API server system.

10. The platform in accordance with claim 1 wherein the API server system is suitable for executing a token transaction service for the user clients.

11. The platform in accordance with claim 1 wherein the API server system is suitable for executing a searching and sorting and displaying digitized real estate data from the distributed platform database.

12. The platform in accordance with claim 1 wherein the API server system is suitable for executing a searching and sorting and displaying data of development project from the distributed platform database.

13. The platform in accordance with claim 1 wherein the API server system is suitable for executing transactions with the internal accounting unit of payment system and with the token of real estate object and with the token of development project.

14. The platform in accordance with claim 1 wherein the blockchain-core of the platform is suitable for recording of data into the blockchain of such processes as adding and changing user clients or adding and modifying the property or adding and changing a development project or adding and modifying the token register data.

15. The platform in accordance with claim 1 wherein the API server system is suitable for automatically selecting users as members of a digital contract based on user data or data of a real estate object/ development project or a user rating on a platform defined by the total number of user points.