KR20230030916A - Digital asset management system and method using blockchain and NFT technologies - Google Patents

Abstract

Disclosed is a digital asset management system using blockchain and NFT technology. The digital asset management system using blockchain and NFT technology, includes a digital asset management system including an asset valuation module individually valuating each of a plurality of actual assets in each building as an individual structure, and including a blockchain platform system storing and managing an ownership certificate, owner information and actual asset information of digital assets in regard to actual assets valuated as an individual structure in one single building, as an NFT-based blockchain node; and a user terminal (Web, App) connected to the digital asset management system and an investor transaction system through a wired/wireless communication network, and providing ownership information, investor information and actual asset information of actual assets in a building through the wired/wireless communication network. The digital asset management system using blockchain and NFT technology individually valuates assets as an individual structure for one single building, individually issues NFT-DABS having different asset values through interconnection with the investor transaction system (using N single accounts), enables one single person by actual asset or a plurality of people to invest in the NFT-DABS through the investor transaction system, and manages real estate property transaction information for each asset in the building.

Description

Digital asset management system and method using blockchain and NFT technologies}

The present invention relates to a digital asset management system and method using block chain and NFT technology, and more particularly, to a digital asset management system using a public or private block chain platform system and using block chain and NFT technology to For each building, the actual assets of each structure are evaluated for each asset value, and in conjunction with the investor trading system, NFT-DABS with different asset values for each real asset product are issued (using N single accounts), and the investor trading system One or more of each real asset of NFT-DABS issued through NFT-DABS (digital asset backed securities) invests in NFT-DABS, and for each real asset in the building, the owner (transferrer) and the corresponding amount contract for change of ownership of real assets of the authorized transaction party (transferee) who paid the actual asset, contract with one or multiple investors of the actual asset, or the owner of the actual asset (lessor) and the authorized transaction party who paid the corresponding amount (lessee). It is about a digital asset management system and method using block chain and NFT technology that manages real asset ownership and lease contract transactions according to a lease agreement with

Recently, ownership information that cannot be tampered with, generated by the unique NFT (Non Fungible Token, non-fungible token) used to display the non-fungible digital original, is obtained, the authenticity of the digital original is verified, and the blockchain and NFT are used. Digital paintings, digital works of art, digital sound source data, games, and antiques are traded and sold, for example, metadata containing information about works of art such as paintings (owner, work name, copyright holder (author name), work storage location) URL, transaction history, transaction record) and anti-piracy timestamp are combined, making it impossible to copy. In particular, overseas companies such as ARTNET, ARTSY, and ARTPRICE manage transaction records and data on ownership of works of art displayed in offline and online galleries. When an NFT transaction is made, the ownership is sold from the owner to the buyer, the authenticity of the work is verified, the copyright is not purchased, and the copyright is transferable by transaction.

The United States has established an NFT exchange to put antiques, digital paintings, digital artworks, and digital art on the auction market and conduct auction activities for artworks. Representative NFT trading marketplaces are Open Sea and Valueables. , Super Rare, etc.

As a prior art 1 related to this, Patent Registration No. 10-2132122 has registered "a method for issuing digital asset-backed securities and trading digital asset-backed securities based on a block chain and a device for performing the method".

The method of issuing and trading digital asset backed securities (DABS) for assets based on blockchain is that a node that provides DABS issuance and transaction service issues multiple DABS for each of a plurality of assets on a blockchain network. generating each of a plurality of DABS for each asset; DABS issuance and transaction service providing node selling each of a plurality of DABS on a blockchain network through an exchange node; and the DABS issuance and transaction service providing node transacting each of the plurality of DABS on the blockchain network through the exchange node.

The transaction authority of the DABS issuing and transaction service providing node is set based on the channel, chain code or data classification,

The channel is used to set the transaction authority of the node through a physically independent channel or a virtually independent channel according to the setting,

The chain code is used to set transaction rights of nodes within the same channel according to settings,

The above data classification is used to set the transaction authority of nodes within the same channel or the same chain code according to the setting.

If the transaction authority is set based on the channel and a non-channel node is included in the middle of the channel,

In order to set the channel as the virtually independent channel, a section in which data must be transmitted through a node other than the channel is set as a data separation encryption section, and separate encryption of data is performed on the data separation encryption section.

The method comprises the steps of the DABS issuance and transaction service providing node distributing operating revenue for each of the plurality of assets to a wallet of a DABS issuance and transaction service using device that owns each of the plurality of DABS based on the blockchain code Including more,

The quantity and initial selling price of each of the plurality of DABS are determined based on the asset value evaluation result for each of the plurality of assets and the blockchain code,

The blockchain code is installed in the DABS issuance and transaction service providing node or stored on the blockchain.

A DABS issuance and transaction service provider node that issues and trades digital asset backed securities (DABS) for assets based on blockchain,

a communication unit implemented to communicate with an external node; and

Including a processor operatively connected to the communication unit,

The processor generates each of a plurality of DABS for each of the plurality of assets through the issuance of DABS for each of the plurality of assets on the blockchain network,

Selling each of the plurality of DABS on the blockchain network through an exchange node, trading each of the plurality of DABS on the blockchain network through the exchange node,

It is implemented to repurchase for at least one asset among the plurality of assets that issued DABS,

The repurchase is performed based on the repurchase price of DABS for at least one asset determined based on the blockchain code,

a DABS issuance and transaction service using device that owns the DABS for the at least one asset sells the DABS for the at least one asset at the repurchase price;

The DABS issuance and transaction service providing node is a node that has authority to generate blocks based on channel settings and/or block chain code settings,

Sell request information and purchase request information for each of the plurality of DABS are recorded on a block, matched on the blockchain, and the transaction is completed by verification and agreement of the DABS issuing and trading service providing nodes.

1 is a conceptual diagram showing a blockchain system for issuing and trading DABS based on a conventional blockchain.

The blockchain system (or blockchain network) for issuing and trading DABS includes a DABS issuance and transaction service provider node (110), a DABS and transaction service operation node (120), an exchange node (130), a value evaluation device (140), DABS issuance and transaction service use device 150 is included.

The term node may refer to a configuration that directly generates a transaction on a blockchain, and a device may refer to a configuration that does not directly generate a transaction on a blockchain. Each node or device includes a communication unit and a processor, the communication unit is implemented for communication with a blockchain network and/or other nodes, and the processor may be operatively connected to the communication unit. However, this configuration is an example of a blockchain system for issuing and trading DABS for assets. The node disclosed in FIG. 1 may operate as a device or the device disclosed in FIG. 1 may operate as a node, and such an embodiment is also included in the scope of the present invention.

A blockchain may be created that stores and/or processes various transactions generated by nodes and devices operating on a blockchain network. Each of a plurality of blocks included in the blockchain may include transaction information (or hash information about the transaction) generated during a certain period of time (eg, between the generation of the previous block and the time of generation of the current block) and verified by the node. there is.

Specifically, each block constituting the blockchain includes information related to programming code (hereinafter referred to as block chain code) for performing a specific algorithm based on the blockchain, such as transaction information occurring on the blockchain, smart contract, etc. can be saved. Alternatively, transaction information generated on the blockchain may be included in a separate storage unit, and only hash information about the transaction may be included on the block, and the blockchain code is installed according to the role of the node, and information related to the blockchain code It can also be stored on blocks.

After verifying the transaction of the node, the information about the block connected to the blockchain is transferred to at least one node in the blockchain network (eg, DABS issuing and trading service providing node 110, DABS issuing and trading service operating node 120 )) can be propagated to At this time, the node that verifies the transaction can be set separately.

Blocks connected to the blockchain can be created based on mining, which is based on proof of work (POW), proof of stake (POS), delegated proof of stake (DPOS), or Hyperledger. Various schemes, such as a scheme in which a node creates a block, may be used. A block is mined by including the information of the previous block, and this mining method can prevent the transaction information recorded on the block from being tampered with.

The blockchain network is a network that serves as a platform that can also use other blockchain-based services, such as the existing Ethereum blockchain network, or its own blockchain for issuing and trading DABS according to the embodiment (eg, permission It can be a network that creates a permissioned blockchain or a private blockchain.

DABS issuance and DABS transactions can be performed based on the block chain code recorded on the block by the DABS issuance and transaction service providing node 110 on the block chain network or the block chain code installed on each node.

The DABS issuance and transaction service providing node 110 may be implemented to implement DABS issuance and asset transaction services on a blockchain and provide DABS issuance and asset transaction services. For example, the DABS issuance and transaction service providing node 110 may store/install blockchain codes such as smart contracts or chain codes for DABS issuance and asset transaction services on a private blockchain (or node). Transactions generated by the DABS issuance and transaction service providing node 110, the DABS issuance and transaction service operation node 120, and the exchange node 130 are processed based on the uploaded block chain code, which is disclosed in the following examples. DABS issuance and asset trading services can be provided.

The first DABS and/or the second DABS may be issued on the blockchain by the DABS issuance and transaction service providing node 110 .

The first DABS may be created upon issuing digital asset-backed securities for an asset (eg, real estate). The first DABS is not securities, and may be securities for the right to receive rental income from assets (eg, real estate).

The first DABS may be defined for each asset. For example, it may be defined as a first DABS-A for real estate A, a first DABS-B for real estate B, a first DABS-C for real estate C, and the like. The first DABS issued as the first DABS and corresponding to each of a plurality of tradable assets may be traded on the exchange node.

The first DABS does not prove the right to own an asset, but it can prove the right to receive a distribution of profits from an increase in the value of an asset and profit from asset management.

The second DABS may be a digital security related to a transaction fee paid when trading the first DABS in an exchange node. For example, the second DABS may be a security that can be exempted from a certain percentage (eg, 50%) of a transaction fee of a specific percentage (eg, 0.1%) generated when trading the first DABS. The second DABS may not be issued on an asset basis, or may be expressed in other terms.

The DABS issuance and transaction service providing node 110 may distribute profits from the operation of assets issued to DABS to DABS owners. The DABS issuance and transaction service providing node 110 may be a foundation node that provides DABS issuance and asset transaction services.

According to the embodiment, contracts for transaction by asset may be set separately based on blockchain code. When purchasing the first DABS for an asset based on the blockchain code, the contents of the contract are delivered to the DABS issuance and transaction service use device, and the consent process for the asset transaction can proceed. Consent result information of the first DABS purchaser may be stored on the blockchain. For example, when a sale of an asset for which DABS is issued occurs, a procedure for repurchasing the first DABS owned by the DABS issuance and transaction service using device may be performed. A DABS issuance and transaction service using device possessing the first DABS may be obliged to sell the first DABS. Special rules for assets issued as such DABS are defined, and when the first DABS is purchased, it is delivered to the DABS issuance and transaction service use device, a consent procedure for it is performed, and the consent result can be stored on the blockchain.

The DABS issuance and transaction service operating node 120 may be a node that mines blocks. The DABS issuance and transaction service operating node 120 can verify transactions occurring on the blockchain, such as DABS issuance and DABS transactions. The verified transaction (or hash information related to the transaction) can be included in a block and recorded on the blockchain. The DABS issuance and transaction service operating node 120 is a node to which authority for block mining is assigned by the DABS issuance and transaction service providing node 110 (or a node in which a block chain code such as a separate chain code for mining is installed) ) can be. The DABS issuance and transaction service providing node 110 may also be one DABS issuance and transaction service operating node 120 .

Exchange node 130 may be implemented to provide trading services for assets issued with DABS. Exchange node 130 may trade a first DABS for an asset. Transaction information of the first DABS for assets generated on the exchange node 130 may be recorded on the blockchain as a transaction. A transaction fee according to the transaction of the first DABS may be generated, and the transaction fee according to the transaction of the first DABS may be determined according to the second DABS possessed.

The value evaluation device 140 may be implemented to evaluate the value of an asset. An asset valuation may be made for the issuance of DABS for assets such as real estate. The valuation device can evaluate the value of an asset and transmit the valuation result on a blockchain network. The issuance of DABS for assets can be performed based on the evaluation results of assets transmitted on the blockchain. The value evaluation device 140 may directly transmit the value evaluation result on the blockchain network, or may transmit the value evaluation result through the DABS issuance and transaction service providing node 110.

The DABS issuance and transaction service use device 150 may be a device that trades or owns assets (eg, the first DABS) issued to DABS through an exchange node. For example, the DABS issuance and transaction service use device 150 may trade a first DABS for a specific real estate and store it in a personal wallet.

In addition, the DABS issuance and transaction service use device 150 may acquire asset management revenue determined based on the first DABS. For example, when the DABS issuance and transaction service using device 150 owns the first DABS-A of the real estate A, operating profits of the real estate A may be distributed based on the first DABS-A. The monthly rental income of the real estate A issued as the first DABS-A may be deposited in legal currency or other converted digital assets and distributed according to the amount owned by the first DABS-A.

According to an embodiment, a separate intermediary node (eg, trust node/bank node) may be added that serves as a trustee for separate assets and/or a storage and transfer role for digital assets. Specifically, according to the request of the trust node, the transaction service providing node 110 may issue DABS for the asset. In addition, liquidated assets such as digital assets and legal currency can be moved through the trust node/bank node. For example, through a public offering procedure for assets, the DABS issuance and transaction service use device 150 may deposit legal currency corresponding to the issued DABS and receive DABS, and the legal currency may be used as a trust node/bank node. It can be provided to the owner/manager of the asset through an intermediary node.

In addition, financial transactions (transactions on investment returns, principal, interest, etc.) based on assets that issued DABS can be made through the trust node/bank node. For example, investment returns and interest generated based on assets may be provided to the DABS issuance and transaction service use device 150 through a trust node/bank node.

However, the existing asset management system did not provide digital asset management using block chain and NFT technology by evaluating the asset value of each real asset in the building and linking it with the investor trading system. Regarding changes in the ownership of real assets, real estate lease transaction information of real assets according to the lease agreement between the owner (lessor) and the transaction party (lessee) of the actual assets was not managed.

Patent Registration No. 10-2132122 (Registration Date: July 02, 2020), “Method for issuing digital asset-backed securities and trading digital asset-backed securities based on blockchain, and device for performing these methods”, Casa Korea Co., Ltd.

The purpose of the present invention for solving the above problems is to use a public or private blockchain platform system in a digital asset management system, and evaluate the asset value of each real asset of an individual structure for one building using block chain and NFT technology. In conjunction with the investor trading system, each NFT-DABS with different asset values for each real asset product is issued (using N single accounts), and one or many NFT-DABS issued through the investor trading system are issued for each real asset. A invests in NFT-DABS (NFT-based digital asset backed securities), and for each real asset in the building, the actual assets of the owner (transferrer) and the authorized transaction party (transferee) who paid the corresponding amount Ownership of real assets and lease transactions under a change of ownership agreement, an agreement with one or more investors of real assets, or a lease agreement between the owner of real assets (lessor) and the authorized transaction party (lessee) who paid the corresponding amount It provides a digital asset management system using blockchain and NFT technology.

In order to achieve the object of the present invention, a digital asset management system using block chain and NFT technology is provided with an asset evaluation module that evaluates assets in an individual structure for each of a plurality of real assets in each building. A blockchain platform system that stores and manages digital asset ownership certificates, owner information, real asset information, and transaction history and transaction records for each real asset for real assets whose asset values are evaluated in an individual structure as NFT-based blockchain nodes. a digital asset management system having; And a user terminal (Web, App) that is connected to the digital asset management system and the investor trading system through wired and wireless communication networks and provides ownership information of real assets in the building, investors information, and real asset information through wired and wireless communication networks.

The digital asset management system using the block chain and NFT technology of the present invention uses a public or private block chain platform system in the digital asset management system, and uses the block chain and NFT technology to manage real assets of individual structures for one building. Each asset value is evaluated, and NFT-DABS with different asset values for each real asset product are issued in conjunction with the investor trading system (using N single accounts), and the actual assets of the NFT-DABS issued through the investor trading system One person or many per person invests in NFT-DABS (digital asset backed securities), and the owner (transferr) and the authorized transaction party (transferee) who paid the corresponding amount for each actual asset in the building )'s real property ownership change contract, one or more investors' contract for real property, or a lease agreement between the owner of the real property (lessor) and the authorized transaction party (lessee) who paid the corresponding amount It has the effect of managing lease contract transactions.

1 is a conceptual diagram showing a blockchain system for issuing and trading DABS based on a conventional blockchain.
2 is a block diagram of a digital asset management system using block chain and NFT technology according to the present invention.

Hereinafter, the configuration and operation of a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the description of the present invention, if it is determined that a detailed description of a related known function or known configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, drawing numbers are assigned the same drawing numbers in different drawings when indicating the same configuration.

2 is a block diagram of a digital asset management system using block chain and NFT technology according to the present invention.

The digital asset management system using the block chain and NFT technology of the present invention uses a public or private block chain platform system in the digital asset management system, and uses the block chain and NFT technology to manage real assets of individual structures for one building. Each asset value is evaluated, and NFT-DABS with different asset values for each real asset product are issued in conjunction with the investor trading system (using N single accounts), and the actual assets of the NFT-DABS issued through the investor trading system One person or many per person invests in NFT-DABS (digital asset backed securities), and the owner (transferr) and the authorized transaction party (transferee) who paid the corresponding amount for each actual asset in the building )'s real property ownership change contract, one or more investors' contract for real property, or a lease agreement between the owner of the real property (lessor) and the authorized transaction party (lessee) who paid the corresponding amount and manage lease agreement transactions.

For example, the public blockchain platform system includes Bitcoin, Ethereum, and the like, and in the embodiment, the private blockchain platform system uses the HyperLedger Fabric private blockchain platform system.

The digital asset management system using the block chain and NFT technology of the present invention

Equipped with an asset evaluation module that evaluates assets in individual structures by multiple real assets in each building using block chain and unique NFT technology. A digital asset management system (100) equipped with a blockchain platform system that stores and manages digital assets (ownership certificate of real assets, owner information, real asset information, transaction details and transaction records for each real asset) as NFT-based blockchain nodes ; and

Investors who are connected to the digital asset management system and issue NFT-DABS with different asset values for real assets evaluated as individual structures in one building, and one or more investors manage investment information in NFT-DABS trading system 200; and

It is connected to the digital asset management system 100 and the investor trading system 200 through wired and wireless communication networks, and to users (investors of real assets, real estate transaction parties) authorized by the owner of the real asset, the building owner, and the owner of the real asset. It includes a user terminal (Web, App) that provides ownership information, investors information, and real asset information of real assets in the building through wired and wireless communication networks.

Digital assets include NFT-based ownership certificates of real assets, owner information, and real asset information.

A third party who is not permitted to access the owner's own NFT-based ownership certificate, encrypted ownership information and encrypted real asset information of the owner of the real asset in the building cannot change the ownership certificate, ownership information and asset information of the real asset. does not exist.

The user terminal uses a PC, smart phone, or tablet PC (Web, App) connected to the digital asset management system 100 and the investor trading system 200 through a wired or wireless communication network.

The digital asset management system is equipped with a public blockchain platform system or a private blockchain platform system,

In the blockchain platform system, the blockchain using its own NFT does not have a central server, and individual and individual distributed P2P in the Merkle Tree structure in which blockchain nodes connected in a chain structure are formed. Blocks (N1-B1,N2- After B2,N3-B3,..) is formed, blockchain nodes are sequentially connected in a chain structure.

In an embodiment, the digital asset management system is provided with an asset value evaluation module and a "private blockchain platform system (Hyperledger Fabric)" for evaluating the asset value of real assets of individual structures in one building, and the investor trading system In conjunction with the management of one or multiple investor information of the real asset, additionally, for the real asset evaluated as an individual structure in one building, the unique NFT-based ownership certificate and owner information and investor contract information and predetermined Investor information of rates, contracts for change of ownership of real assets (for example, contracts for real estate purchase and sale of real assets such as land and the second floor of a building, meeting rooms and annexed rest rooms) and real estate lease contracts between the lessee and the owner of the real assets (lessor) Smart contract management, ownership certificate and owner information management for each real asset that can be renewed in real time, ownership change history management for each real asset, transaction details and transaction records for each real asset, real estate lease with the owner of each real asset and transaction parties Stores and manages real estate lease transaction information and lease management information of the owner (lessor) and the authorized transaction party (lessee) who normally pays the contract amount and monthly rent according to the contract.

The lease contract between the owner of the real property and the transaction party shall follow the terms of the real estate lease agreement of the real property.

In the embodiment, in the blockchain platform system, real assets such as ownership change contracts of real assets in buildings, investor contracts and investor information of real assets in buildings, lease contracts between the owner (lessor) of real assets and the transaction party (lessee) In the case of real estate transactions, smart contracts based on electronic signatures between the owner (transferrer) and the transferee are contracts for changing the ownership of real assets in the building. The private block chain platform system equipped with the digital asset management system uses the PoW (Proof-of-Work) method by confirmation by the consensus algorithm (Consensus Algorithm) with the previous prospective person (BBB), and the investor transaction In conjunction with the system, after signing an investment contract for real assets between owners and investors, one or multiple equity investments (one-person equity investment/two-person equity investment/three-person equity investment) of the assessed value of the asset value of the actual asset are provided. and

Equity investment (10%, 20%, 30%, 40%, 70% equity investment) of each real asset of each real asset in the building is a smart contract that provides the owner of the real asset with an investment contract of the real asset of the investor. Proof-of-Stake (PoS) method was used.

In addition, in the case of a change in the ownership of the real assets of the building, if investors invest in the real assets of the owner at a predetermined rate, the amount invested, including the profits set at the time of the investment contract, is returned to the investors of the actual assets and the investment is completed. Later, according to the Real Asset Ownership Change Agreement (Smart Contract) between the current owner of the real asset (AAA) and the authorized new trading party (BBB) who paid the real asset appraisal amount, the real asset appraised amount from the current owner (AAA) Change of ownership is possible to an authorized new transaction party (BBB) who pays

The electronic signature guarantees the legitimacy of the owner and the party involved in the real estate transaction, prevents forgery and alteration of the block chain, and provides a security function by encrypting owner information, investors information, and actual asset information. Each blockchain node uses a hash function to create a unique hash value, and all blockchain nodes connected in a chain structure include the hash value (previousHash) of the previous blockchain node as one of the values to obtain the value. . In each block, six management information [Version, Previous block hash, Merkle Root, Time, difficulty target (bits, target), and Nonce] are included in the header. and the body stores transaction details (transaction #1, transaction #2, transaction #3, transaction #N). At this time, the previous block hash points to the hash of the previous block. After adding all 6 management information, the nonce is increased and repeated until it is smaller than the target value bits (target) through the hash function. If the above condition is satisfied, the hash value of the current block is determined and the newly created block is managed. It returns to the hash value (previousHash) of the previous blockchain node, which is one of the information.

The digital asset management system 100 verifies the ownership of real assets and issues proofs of ownership, own NFT-based real asset ownership certificates, owner information, Asset valuation information (asset valuation items, asset valuation amount) and actual asset information are stored in the storage of the private blockchain platform system, and the P2P decentralized ledger storage technology of the private blockchain platform is used. stored and shared in a blockchain distributed network, verifying the owner of each real asset in the building, managing the ownership certificate, owner information and real asset information, and electronic signatures between the owner (transferor) and the transferee during real estate transactions of real assets Real estate transaction information is managed according to the underlying smart contract (contract for change of ownership of real assets, lease agreement with the transaction party of the owner of real assets, transaction details and transaction records for each real asset), Confirm the NFT-based ownership certificate of real assets, owner information, and investor information, and verify the ownership of real assets in the building, NFT-based ownership certificate of real assets, owner information and investors information, real asset information, and real asset information in the building. Manages owner information and ownership change history based on smart contracts during real estate transactions with owners.

The ownership of real assets in the building is a corporation or individual,

Ownership information includes corporate information (corporate name, corporate registration number, corporate address, corporate phone number, corporate representative information-name, resident registration number, home address, TEL, mobile phone number, e-mail address), or personal information (name, resident registration number, home address, TEL, mobile phone number, e-mail address, etc.).

Digital assets are managed with unique NFT-based ownership certificates that cannot be forged or altered for real assets in the building, owner information, investors information, corresponding real asset information, and transaction details and transaction records of real assets.

The digital asset management system 100 uses a blockchain node that manages transaction information on real assets in a private blockchain platform system, NFT-based ownership certificates for each real asset, owner information of real assets, and asset valuation of real assets. Information (asset value evaluation item, asset value evaluation amount) and actual asset information, transaction details and transaction records for each actual asset are stored in the storage of the blockchain platform system,

Verification of current ownership of real assets and issuance of proofs of ownership, contracts with investors providing equity investment at a predetermined rate of the assessed value of real assets, ownership change contracts between the owner of real assets (transferrer) and the authorized transaction party (transferee); In real estate transactions of real assets based on smart contracts related to lease agreements between the owner (lessor) and the authorized transaction party (lessee) of real assets, the owner (transferr) and the asset valuation amount are completely transferred when the ownership of real assets is changed. The transfer of ownership of real assets according to the Real Estate Ownership Change Agreement of the real estate ownership of real assets of the authorized transaction party (transferee), which has been fully paid, uses NFT and Smart Contract using blockchain technology to transfer the current value of real assets. A smart contract on the blockchain is concluded by digital signatures of the private key/public key of the owner (transferrer) and the authorized transaction party (transferee) who paid the corresponding amount, and the authorized Ownership of real assets and digital assets (ownership certificate of real assets, ownership information, real asset information, transaction details and transaction records for each real asset) is transferred to the transaction party (transferee). In the case of a change in ownership of a real asset, the blockchain platform system provides the ownership certificate and ownership information (transferrer) of the current owner (transfer) of the current real asset stored in the storage for the blockchain node at the point of transfer of ownership of the real asset in the blockchain network. asset) is deleted, and the authorized transaction party (transferee), who has transferred the ownership of the real asset from the current owner of the real asset in the building according to the smart contract, transfers the real asset information, ownership information, and ownership certificate transferred to the blockchain to the blockchain. It is newly updated and stored in the storage of the new black chain node of the transferee of the platform, and real estate transaction information (real asset information, Asset smart contract information, real asset transferor information/lessor information (name, resident registration number, address, email, contact information), transferee information/lessee information (name, resident registration number, address, email, contact information), contract party personal information, contract period ( contract date, contract expiration date), contract content information) are stored in the storage of the blockchain platform system, ownership information of real assets, ownership change information of real assets, ownership change history information, lease contract information of real assets, real assets Each transaction history and transaction record are stored in the asset and at the same time stored in the stock storage of the blockchain platform system.

Through this, the private blockchain platform system of the digital asset management system provides ownership information for each real asset in the building, ownership change information for each real asset, ownership change history information for each real asset, investor contract information of the real asset, and investor information at a predetermined rate. , According to the smart contract of the lease contract between the lessor (owner) and the lessee (transaction party) of the real asset owner of the real asset, the lease contract information, transaction details and transaction records for each real asset are transferred to the asset of the corresponding party in the blockchain platform system ( Asset), and at the same time, it is distributed and managed in the stock storage of the blockchain platform system.

The private blockchain platform system issues certificates that can record, modify, and delete data in the distributed ledger to participants who are authorized to participate in the private blockchain. Identity verification (idetify) issuing a private key (credential) by verifying identity to a blockchain node by receiving a Network Certificate certificate; Distributed Ledger, which stores and manages data in blockchain nodes diverged by an ordering service, as a basic component of a private blockchain;

In private blockchain, ownership verification of NFT-based real assets based on consensus protocol, ownership certificate, owner information and real asset information management, transaction history and transaction records for each real asset are stored in a distributed ledger, and real assets in the building A transaction that manages real estate transaction transactions of real assets when ownership changes of real assets based on smart contracts between the current owner (transferrer) and the transaction party (transferee) of real estate transactions; and

Smart contract between the current owner (corporate or individual) and the relevant party (the person who will pay the corresponding cost according to the contract and transfer the ownership of the real asset in the building) in case of ownership change by smart contract ( It uses the HyperLedger Fabric private blockchain platform system that provides smart contract modules.

The private blockchain platform system issues an NFT-based ownership certificate that manages the ownership change history of real assets and stores and manages owner information and real asset information to the owner who requested proof of ownership to verify ownership of real assets in the building. and real asset details management, smart contract management when ownership changes by smart contract of real assets, owner information of real assets, ownership change history, investor information of real assets, and transaction history and transaction records for each real asset.

The private blockchain platform system

Ownership certificates (digital assets) for real assets in buildings are managed as unique non-fungible tokens (NFTs) to prevent forgery, and investment or ownership change contracts with the owners of real assets that have access to their own blockchain nodes In case of real estate transaction of the lease agreement with the owner, NFT-based NFT using unique NFT and blockchain technology so that the ownership information of the actual asset can be inquired only to the transaction party (permitted user) authorized by the owner of the real asset. Distributed identity verification module that issues DID (Decentralized Identity);

In the private blockchain platform system, the real assets in the building register the owner information whose ownership is registered, the NFT-based ownership certificate of the real assets in the building, the owner information, and the asset valuation information (asset value evaluation items of real assets, assets Value evaluation amount), real asset information is used as a distributed storage of blockchain nodes in a private blockchain system, and the real asset's own NFT-based ownership certificate is encrypted using a hash function to prevent forgery and tampering, so that owner information and real assets Stock, which stores information on the owner's blockchain node;

In the private blockchain platform system, NFT-based ownership certificates, encrypted owner information and real asset information, which are digital assets for real assets in buildings registered in each owner's blockchain node, are stored in the storage of the stock. After that, in the event of a real estate transaction under a real estate ownership contract, investor contract, or lease contract, the current owner of the actual asset (transferr/lessor) and the authorized transaction party (transferee/lessee) who pre-paid the applicable amount specified in the contract A unique NFT-based certificate of ownership (digital asset) for real assets that is renewed on a new blockchain node for authorized trading parties, investors or lessees who have transferred ownership of real assets according to smart contracts is stored in the above storage, and the building Management of ownership information for each real asset, ownership change history for each real asset, investor contract and investor information management for each real asset, lease agreement and lease information for each real asset, and transaction details and transaction records for each real asset, which are updated by a third party A unique NFT-based ownership certificate, ownership information, real asset information, and transaction history and transaction records for each real asset cannot be changed and encrypted using a hash function so that forgery is impossible. Assets; and

The owner of the real asset issues and stores proof of ownership of the real asset in order to verify the ownership of the real asset stored in the asset at the request of the authorized owner, and at the time of real estate transaction of the real asset, the real asset Controls to allow the access right of the blockchain node of the owner with the transaction party authorized by the owner only when the ownership of the real asset changes during the smart contract with the real estate transaction party authorized by the owner, and the real asset It includes a link that connects the investor trading system 200 that attracts one or multiple investors per person and a separate external asset management server (a server that manages the lessor/lessee of real assets, rent and monthly management fees) .

The private blockchain platform system allows access to the unique NFT-based ownership certificate of real assets stored in the storage of the blockchain node, encrypted ownership information and encrypted real asset information, and asset valuation information of encrypted real assets. Unauthorized third parties cannot change the ownership certificate of real assets.

The owner registered as the owner of the real asset in the building decrypts it (unique NFT-based ownership certificate, encrypted ownership information and encrypted real asset information, and encrypted real asset asset valuation information) to obtain information about the ownership of the real asset In the case of a change in ownership of real assets in the building or a real estate lease contract transaction of real assets of the owner, the owner can request verification of ownership of the real asset from the blockchain platform system and obtain proof of ownership.

The digital asset management system 100 uses a blockchain node that manages transaction information on real assets in a private blockchain platform system, NFT-based ownership certificates for each real asset, owner information of real assets, and asset valuation of real assets. Information (asset value evaluation item, asset value evaluation amount) and actual asset information, transaction details and transaction records for each actual asset are stored in the storage of the blockchain platform system,

Verification of current ownership of real assets and issuance of proofs of ownership, contracts with investors providing equity investment at a predetermined rate of the assessed value of real assets, ownership change contracts between the owner of real assets (transferrer) and the authorized transaction party (transferee); Real estate transactions based on smart contracts, such as lease agreements between the owner (lessor) and the authorized transaction party (lessee) of the real asset, when the ownership of the real asset changes, the owner (transferr) and the asset valuation amount are completely transferred. The transfer of ownership of real assets according to the Real Estate Ownership Change Agreement of the real estate ownership of real assets of the authorized transaction party (transferee), which has been fully paid, uses NFT and Smart Contract using blockchain technology to transfer the current value of real assets. A smart contract on the blockchain is concluded by digital signatures of the private key/public key of the owner (transferrer) and the authorized transaction party (transferee), and the authorized person who paid the corresponding amount from the current owner of the real asset (transferrer of the real asset) Ownership of real assets and digital assets (ownership certificate of real assets, ownership information, real asset information, transaction details and transaction records for each real asset) is transferred to the transaction party (transferee). In the case of a change in ownership of real assets, the blockchain platform system deletes the ownership certificate and ownership information (digital assets) of the current owner (transferrer) at the point of transfer of ownership of real assets in the blockchain network, and the real property in the building according to the smart contract. The authorized transaction party (transferee) who has transferred the ownership of the real asset from the current owner of the asset transfers the real asset information transferred due to the ownership change, the ownership information of the real asset, and the ownership certificate to the storage of the new black chain node of the transferee of the blockchain platform. Real estate transaction information (real asset information, real asset smart contract information, transferor information/lessor Information (name, resident registration number, address, email, contact information), transferee information/lessee information (name, resident registration number, address, email, contact information), personal information of contracting parties, contract period (contract date, contract expiration date), contract information) is stored in the storage of the blockchain platform system, and ownership information of real assets, ownership change information of real assets, ownership change history information, lease contract information of real assets, transaction details and transaction records for each real asset are stored in the asset. stored and at the same time stored in the stock storage of the blockchain platform system.

Through this, the private blockchain platform system of the digital asset management system provides ownership information by real asset in the building, ownership change information by real asset, ownership change history information by real asset, transaction details and transaction records by real asset, and Investor contract information, investor information at a predetermined rate, lease contract information, transaction details and transaction records for each real asset according to the smart contract of the lessor (owner) and lessee (transaction party) of the lessor (owner) and lessee (transaction party) of the real asset owner of the real asset Block It is stored in the asset of the corresponding party in the chain platform system, and at the same time, it is distributed and managed in the stock storage of the blockchain platform system.

The digital asset management system using the block chain and NFT technology of the present invention uses a public or private block chain platform system in the digital asset management system, and uses the block chain and NFT technology to manage real assets of individual structures for one building. Each asset value is evaluated, and NFT-DABS with different asset values for each real asset product are issued in conjunction with the investor trading system (using N single accounts), and the actual assets of the NFT-DABS issued through the investor trading system One person or many per person invests in NFT-DABS (digital asset backed securities), and the owner (transferr) and the authorized transaction party (transferee) who paid the corresponding amount for each actual asset in the building )'s real property ownership change contract, one or more investors' contract for real property, or a lease agreement between the owner of the real property (lessor) and the authorized transaction party (lessee) who paid the corresponding amount and management of lease agreement transactions.

Embodiments according to the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer readable recording medium. The computer readable recording medium may include program instructions, data files, and data structures alone or in combination. Computer-readable recording media include storage, hard disks, magnetic media such as floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. - A hardware device configured to store and execute program instructions in storage media such as magneto-optical media, ROM, RAM, flash memory, etc. may be included. Examples of program instructions may include those produced by a compiler and machine language codes as well as high-level language codes that can be executed by a computer using an interpreter. The hardware device may be configured to operate as one or more software modules to perform the operations of the present invention.

As described above, the method of the present invention is implemented as a program and can be read using computer software on a recording medium (CD-ROM, RAM, ROM, memory card, hard disk, magneto-optical disk, storage device, etc.) ) can be stored in

Although described with reference to specific embodiments of the present invention, the present invention is not limited to the same configuration and operation as the specific embodiments to illustrate the technical idea as described above, and within the limit that does not deviate from the technical spirit and scope of the present invention It can be implemented with various modifications, and the scope of the present invention should be determined by the claims described later.

100: Blockchain platform system (NFT, blockchain, asset evaluation module)
200: investor trading system

Claims (10)

It is equipped with an asset evaluation module that evaluates assets in individual structures for a number of real assets in each building, and includes digital asset ownership certificates and owner information and actual assets for real assets whose asset values are evaluated in individual structures in one building. A digital asset management system having a blockchain platform system that stores and manages asset information, transaction details and transaction records for each actual asset as an NFT-based blockchain node; and
Blockchain including a user terminal (Web, App) that is connected to the digital asset management system and investor trading system through wired and wireless communication networks and provides ownership information of real assets in the building, investors information, and actual asset information through wired and wireless communication networks. and digital asset management system using NFT technology. According to claim 1,
Investors who are connected to the digital asset management system and issue NFT-DABS with different asset values for real assets evaluated as individual structures in one building, and one or more investors manage investment information in NFT-DABS A digital asset management system utilizing blockchain and NFT technology that further includes a transaction system. According to claim 2,
The user terminal is a digital asset management system using block chain and NFT technology, using a PC, smartphone, or tablet PC (Web, App) connected to the digital asset management system and the investor trading system through a wired or wireless communication network. . According to claim 2,
The digital asset management system is equipped with a public blockchain platform system or a private blockchain platform system,
In the blockchain platform system, a blockchain using a unique NFT is allocated to each blockchain node through a distributed P2P network of individuals in a merkle tree structure in which blockchain nodes connected in a chain structure are formed (N1 ,N2,N3,..) After blocks (N1-B1,N2-B2,N3-B3,..), which are transaction ledgers in which P2P transaction data is recorded, are formed, sequentially block chain nodes form a chain structure. A digital asset management system using block chain and NFT technology. According to claim 4,
The digital asset management system is equipped with an asset value evaluation module and the private blockchain platform system for evaluating the asset value of real assets of individual structures in one building, and is linked with the investor trading system to ensure that one person of the real asset Or, in addition to managing multiple investor information, for real assets evaluated as individual structures in one building, the unique NFT-based ownership certificate, owner information and investor contract information, ownership change contract of real assets and the owner of real assets (lessor ) real estate lease transaction smart contract management with tenants, ownership certificate and owner information management of real assets, ownership change history of real assets and real estate lease transaction information and lease management information of the owner (lessor) and lessee of real assets, real assets A digital asset management system that uses block chain and NFT technology to store and manage each transaction history and transaction record. According to claim 5,
The private blockchain platform system issues certificates that can record, modify, and delete data in the distributed ledger to participants who are authorized to participate in the private blockchain. Identity verification (idetify), which issues a private key (credential) by verifying the identity of a blockchain node by receiving a Network Certificate certificate;
A distributed ledger that stores and manages data in blockchain nodes diverged by an ordering service as a basic component of a private blockchain; In a private blockchain, ownership verification of NFT-based real assets based on consensus protocol, ownership certificates and owner information, real asset information management, transaction details and transaction records for each real asset, current owner (transferor) in case of real estate transaction of real assets ) and a transaction that manages real estate transaction transactions of real assets in case of change of ownership based on a smart contract with the transaction party (assignee);
Digital asset management using blockchain and NFT technology, using the Hyperledger Fabric private blockchain platform system that provides smart contracts between the current owner (transferrer) and the transaction party (transferee) when ownership changes by smart contract of real assets system. According to claim 5,
The private blockchain platform system
Ownership certificates for real assets in buildings are managed as unique NFTs to prevent forgery and alteration. Distributed identity verification module that issues NFT-based DID using NFT and blockchain technology;
In the above private blockchain platform system, the owner information of the real asset in the building is registered, the NFT-based ownership certificate for each real asset in the building, the owner information of the real asset, the asset value evaluation information of the real asset, and the real asset Stock, which is used as a distributed storage of information, transaction history and transaction records for each actual asset in the blockchain nodes of the private blockchain system, and stores them in the owner's blockchain node;
In the private blockchain platform system, NFT-based ownership certificates, encrypted owner information and real asset information, which are digital assets for real assets in buildings registered in each owner's blockchain node, are stored in the storage of the stock. After that, in the event of a real estate transaction under a real estate ownership contract, investor contract, or lease contract, the current owner of the actual asset (transferr/lessor) and the authorized transaction party (transferee/lessee) who pre-paid the applicable amount specified in the contract A unique NFT-based certificate of ownership (digital asset) for real assets that is renewed on a new blockchain node for authorized trading parties, investors or lessees who have transferred ownership of real assets according to smart contracts is stored in the above storage, and the building Assets that manage ownership information management for each real asset, ownership change history for each real asset, investor contract and investor information management for each real asset, lease agreement and lease information for each real asset, and transaction details and transaction records for each real asset; and
The owner of the real asset issues and stores proof of ownership of the real asset in order to verify the ownership of the real asset stored in the asset at the request of the authorized owner, and at the time of real estate transaction of the real asset, the real asset Controls so that the owner of the real asset permits access to the blockchain node of the owner with the trading partner only when the owner of the real asset changes in the case of a smart contract with the authorized trading partner, separate from the investor trading system A digital asset management system using blockchain and NFT technology, including a link to an external asset management server (a server that manages lessor/lessee, rent and monthly management fee). According to claim 2,
In the private blockchain platform system, smart contracts based on electronic signatures between the owner (transferrer) and the transferee in the real estate transaction of the real asset of the contract of ownership change of the real asset in the building, the lease agreement with the transaction party of the owner of the real asset The contract for changing the ownership of real assets in the building uses the Proof of Work (PoW) method by agreement by the Consensus Algorithm between the current owner and the transaction party, and the private The blockchain platform system interlocks with the investor trading system, and after signing the investment contract of real assets between the owner and the investors, it provides one or multiple equity investments of the asset value evaluation amount of the real assets, and each real asset in the building A digital asset management system using block chain and NFT technology that uses Proof-of-Stake (PoS) method in a smart contract that provides investors' actual asset investment contracts to the owners of real assets for equity investment at a predetermined rate by investors. According to claim 8,
In the case of a change in the ownership of the actual property of the building, if the actual property of the owner becomes an equity investment at a predetermined rate, the invested amount including the profit set at the time of the investment contract is returned to the investors of the actual property and the investment is completed. Payment of real asset appraisal from the current owner (AAA) according to the Real Asset Ownership Change Agreement (smart contract) between the current owner of the real asset (AAA) and the authorized new trading party (BBB) who paid the real asset appraisal amount A digital asset management system using block chain and NFT technology, characterized in that ownership can be changed to a new transaction party (BBB). According to claim 9,
The digital asset management system
Using a blockchain node that manages transaction information about real assets in the private blockchain platform system, NFT-based ownership certificates, owner information, asset value evaluation information, and real asset information for each real asset are stored in the storage of the blockchain platform system. stored,
Verification of current ownership of real assets and issuance of proofs of ownership, contracts with investors providing equity investment at a predetermined rate of the assessed value of real assets, ownership change contracts between the owner of real assets (transferrer) and the authorized transaction party (transferee); Real estate transactions based on smart contracts, such as lease agreements between the owner (lessor) and the authorized transaction party (lessee) of the real asset, when the ownership of the real asset changes, the owner (transferr) and the asset valuation amount are completely transferred. The transfer of ownership of real assets according to the Real Estate Ownership Change Agreement of the real estate ownership of the real assets of the authorized transaction party (transferee), which has been paid in full by the full payment, is carried out through the use of smart contracts using NFT and blockchain technology to transfer the ownership of the real assets to the current owner (transferee) and the authorized A smart contract on the blockchain is concluded by the digital signature of the private key/public key of the transaction party (transferee), and the real asset and digital asset ( Ownership of the real asset (certificate of ownership, ownership information, real asset information) is transferred, and in the case of a change in ownership of the real asset, the blockchain platform system transfers the ownership of the current owner (transferor) at the time of the transfer of ownership of the real asset in the blockchain network. The certificate and ownership information are deleted, and the authorized transaction party (transferee), who has transferred the ownership of the real asset from the current owner of the real asset in the building according to the smart contract, It is newly updated and stored in the storage of the new black chain node of the transferee of the blockchain platform, and real estate transaction information (real asset information, real asset Smart contract information, real asset transferor information/lessor information (name, resident registration number, address, email, contact information), transferee information/lessee information (name, resident registration number, address, email, contact information), contract party personal information, contract period (contract date, contract expiry date), contract content information) is stored in the storage of the blockchain platform system, and ownership information of real assets, ownership change information of real assets, ownership change history information, lease contract information of real assets, transaction details and transaction records for each real asset are stored as assets ( Asset) and at the same time stored in the stock storage of the blockchain platform system, a digital asset management system using blockchain and NFT technology.

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