Transaction method and system based on block chain technology

Abstract

The invention discloses a transaction method and system based on a block chain technology. The operation method of the system comprises the following steps: step 1, a user carries out identity registration and block chain network authority acquisition; 2, a buyer and a seller initiate a real estate transaction through an intelligent contract; 3, the system automatically matches a proper transaction counterparty according to a transaction condition; 4, after the transaction is completed, chain entering confirmation is carried out; the user transaction request submission module is used for processing registration and transaction request submission of a user, verifying the identity of the user and creating a block chain network access authority; the condition matching and transaction confirmation module is used for the smart contract to carry out condition matching according to the information in the transaction request and search for a proper transaction counterparty; the transaction completion and recording module is used for completing real estate ownership right transfer after the transaction is confirmed and recorded on the block chain; the method has the characteristics of high transparency and safe and efficient transaction.

Description

Technical Field

[0001] The present invention relates to the field of blockchain technology, and specifically to a transaction method and system based on blockchain technology. Background Art

[0002] The traditional real estate transaction process usually involves a large number of paper documents and third-party intermediaries, resulting in long transaction cycles, high fees, and information opacity. The application of blockchain technology can optimize the entire transaction process, store transaction information in the form of blocks in a distributed network, reduce cumbersome paper documents, improve transaction efficiency, and save transaction costs.

[0003] In addition, the traditional transaction process is prone to risks such as false transactions and tampering of transaction records, which increases the uncertainty and risk of transactions. Blockchain technology, as a distributed ledger technology, has brought a new solution to real estate transactions with its decentralized, tamper-proof and highly transparent characteristics. The transaction data recorded on the blockchain cannot be controlled and modified by a single entity. All participants can jointly verify and confirm the authenticity of the transaction data to ensure the fairness and credibility of the transaction process. Therefore, it is necessary to design a transaction method and system based on blockchain technology that is highly transparent, secure and efficient. Summary of the invention

[0004] The purpose of the present invention is to provide a transaction method and system based on blockchain technology to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a transaction system based on blockchain technology, the operation method of the system comprises the following steps: Step 1: The user registers his identity and obtains blockchain network permissions; Step 2: The buyer and seller initiate a real estate transaction through a smart contract; Step 3: The system automatically matches the appropriate counterparty based on the transaction conditions; Step 4: After the transaction is completed, confirm the entry into the chain.

[0006] According to the above technical solution, the steps for the user to register their identity and obtain blockchain network permissions include: The user provides necessary personal information to complete the registration; Use multiple authentication techniques; The system creates a unique identity for each user; The identity is associated with the user address in the blockchain network.

[0007] According to the above technical solution, the steps for the user to provide necessary personal information to complete the registration include: Users access the real estate transaction platform and enter the system interface through an Internet browser or mobile application. Before entering the system interface, users will be required to agree and accept the user agreement and privacy policy to ensure that users understand the processing of their personal information and the protection of transaction data. Next, users need to provide necessary personal information to complete the registration process. This personal information includes but is not limited to name, ID number, contact information, email address. In addition, users can also set a username and password for login and use these credentials to verify their identity when logging in.

[0008] According to the above technical solution, the steps for the buyer and seller to initiate a real estate transaction through a smart contract include: Users upload relevant documents and certification materials to ensure the compliance and authenticity of transaction conditions; After submitting a transaction request, the smart contract automatically matches a suitable counterparty.

[0009] According to the above technical solution, the steps for the user to upload relevant documents and certification materials to ensure the compliance and authenticity of the transaction conditions include: In the transaction request, the user needs to provide detailed real estate information, including but not limited to the address, description, and transaction price of the real estate. This information will be used to identify the real estate and determine the transaction conditions. The user can also provide other necessary terms, such as payment method and delivery date, to agree on the transaction details. The user has the right to upload relevant documents and supporting materials to verify the compliance and authenticity of the transaction conditions in subsequent steps. These documents include proof of real estate ownership, proof of land use, and legal documents. The uploaded files will be encrypted and stored in the blockchain network to ensure the security and non-tamperability of the transaction data. When filling in the transaction request and conditions, the user can also modify and adjust them as needed until he is satisfied and submits the transaction request.

[0010] According to the above technical solution, the system automatically matches a suitable counterparty according to the transaction conditions, including: Smart contracts automatically check other participants in the blockchain network and find eligible counterparties; Possible counterparties include other interested buyers or sellers, depending on the type of transaction; After confirmation, the smart contract adds the transaction to the blockchain, and the transaction data is permanently recorded and cannot be tampered with.

[0011] According to the above technical solution, the steps of adding the transaction to the blockchain by the confirmed smart contract and permanently recording the transaction data and making it impossible to tamper with include: If the smart contract successfully finds eligible counterparties, it will further notify these counterparties that there is a transaction matching them and provide relevant transaction information. The notification method can be through internal system messages, emails, text messages or other appropriate methods. After receiving the transaction matching notification, the counterparties can view the details and conditions of the transaction request on their user interface. If the counterparties are interested in the transaction and are willing to participate, they can confirm the transaction request on the user interface. At the same time, before confirmation, the counterparties can also further communicate and negotiate with the users to adjust the transaction conditions and details to ensure that both parties reach an agreement. These communications can be conducted through the chat function within the system or other communication methods. Once the counterparties confirm the transaction request and reach an agreement, the smart contract will automatically add the transaction to a new block in the blockchain network. In this way, the transaction data is permanently recorded on the blockchain and cannot be tampered with. All participants can view the transaction history.

[0012] According to the above technical solution, after the transaction is completed, the steps of chain entry confirmation include: After a new block is verified by multiple nodes and consensus is reached, all relevant information is permanently stored on the blockchain; The immutability of blockchain ensures the security and transparency of transaction data, enabling safe and reliable real estate transactions.

[0013] According to the above technical solution, after the new block is verified by multiple nodes and consensus is reached, the steps of permanently storing all relevant information on the blockchain include: Before a new block is added to the blockchain, it needs to be verified by multiple nodes in the blockchain network and reach a consensus. This is an important feature of blockchain technology. The security and integrity of transaction data are ensured through multi-node verification and consensus. After the new block is verified and meets the consensus requirements of the network rules, the new block will be added to the blockchain. At this time, the transaction is considered to be completed, and all relevant information, such as the transaction price, the two parties to the transaction, and the transaction time, will be permanently stored on the blockchain.

[0014] According to the above technical solution, the system includes: User transaction request submission module, which is used to process user registration and transaction request submission, as well as verify user identity and create access permissions to the blockchain network; The condition matching and transaction confirmation module is used by smart contracts to match conditions according to the information in the transaction request, find a suitable counterparty, and ensure that the transaction data is added to the blockchain network after the counterparty confirms it; The transaction completion and recording module is used to complete the transfer of real estate ownership rights or other legal effects after the transaction is confirmed and recorded on the blockchain, and ensure that transaction-related information is permanently stored on the blockchain and cannot be tampered with.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention implements a blockchain-based transaction method by providing a user transaction request submission module, a condition matching and transaction confirmation module, and a transaction completion and recording module. First, the user registers through the identity authentication module and obtains the authority to access the blockchain network. After submitting the transaction request and conditions, the smart contract automatically matches a suitable counterparty. After the counterparty confirms the transaction request, the transaction data is added to a new block in the blockchain network. After multi-node verification and consensus is reached, the transaction is deemed to be completed. The immutability of the blockchain ensures the security and transparency of the transaction data, provides a guarantee for the reliable recording and verification of the transaction, and thus realizes a safe and reliable real estate transaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 A flowchart of a transaction method based on blockchain technology provided in Embodiment 1 of the present invention; Figure 2 A schematic diagram of the module composition of a transaction system based on blockchain technology provided in Example 2 of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1: Figure 1 This is a flowchart of a transaction method based on blockchain technology provided in Example 1 of the present invention. This embodiment can be applied to real estate transactions. This method can be executed by a transaction system based on blockchain technology provided in this embodiment. Figure 1 As shown, the method specifically comprises the following steps: Step 1: The user registers his identity and obtains blockchain network permissions; In an embodiment of the present invention, a user registers through an identity verification module and obtains permission to access the blockchain network; For example, a user visits the real estate transaction platform and enters the system interface through an Internet browser or mobile application. Before entering the system interface, the user will be required to agree and accept the user agreement and privacy policy to ensure that the user understands the processing of their personal information and the protection of transaction data. Next, the user needs to provide necessary personal information to complete the registration process. Such personal information includes but is not limited to name, ID number, contact information, email address, etc. In addition, the user can also set a username and password for login and use these credentials to verify the identity when logging in; Exemplarily, to ensure the authenticity and security of user identity, this system adopts a variety of identity authentication technologies. Users can digitally sign transaction requests with private keys to prove that the request is indeed from the user himself. The public key is used to verify the validity of the signature. Two-factor identity authentication can also be performed. When logging into the system, users need to enter another type of identity authentication information in addition to the password, such as a mobile phone verification code, fingerprint recognition, etc. In addition, the system can also use other security measures, such as biometric technology, hardware tokens, SMS verification, etc., to ensure the authenticity of user identity and prevent malicious access. Once the personal information provided by the user is verified by the identity authentication module and meets the registration requirements of the system, the system will create a unique identity for the user and associate it with the user address in the blockchain network. This identity will be used to identify and record the user's transaction activities in subsequent transactions. Through such a registration process, the user successfully completes the identity authentication and obtains access to the blockchain network, and can begin using this system for real estate transactions.

[0019] Step 2: The buyer and seller initiate a real estate transaction through a smart contract; In an embodiment of the present invention, a user submits a real estate transaction request and conditions using a user interface. First, the user logs in to the real estate transaction platform, verifies the user's identity by entering a registered user name and password or using other identity authentication methods, and obtains permission to access the platform. After the user logs in, the system will display the user's personal dashboard, which contains information such as the user's transaction history and current real estate holdings. Next, the user chooses to initiate a new transaction on the user interface. The user can select the role of buyer or seller on the transaction initiation page and provide corresponding transaction information; Exemplarily, in a transaction request, the user needs to provide detailed real estate information, including but not limited to the address, description, transaction price, etc. of the real estate. This information will be used to identify the real estate and determine the transaction conditions. The user can also provide other necessary terms, such as payment method, delivery date, etc., to agree on the transaction details, and the user has the right to upload relevant documents and supporting materials to verify the compliance and authenticity of the transaction conditions in subsequent steps. These documents include real estate ownership certificates, land use certificates, legal documents, etc. The uploaded files will be encrypted and stored in the blockchain network to ensure the security and non-tamperability of transaction data. When filling in the transaction request and conditions, the user can also modify and adjust them as needed until he is satisfied and submits the transaction request. Once the user submits the transaction request, the request will be sent to the smart contract for processing. The smart contract will match the conditions according to the information in the transaction request and automatically find a suitable counterparty, which may be other interested buyers or sellers.

[0020] Step 3: The system automatically matches the appropriate counterparty based on the transaction conditions; In the embodiment of the present invention, when a user submits a real estate transaction request and conditions, this information will be received by the smart contract. The smart contract will automatically check other participants in the blockchain network based on the transaction conditions submitted by the user, such as transaction price, real estate type, geographical location and other factors, and find qualified counterparties. Possible counterparties include other interested buyers or sellers, which vary according to different transaction types. If the smart contract successfully finds qualified counterparties, it will further notify these counterparties that there is a transaction matching them and provide relevant transaction information. The notification method can be carried out through internal system messages, emails, text messages or other appropriate methods. After receiving the transaction, the smart contract will automatically check other participants in the blockchain network based on the transaction conditions submitted by the user, such as transaction price, real estate type, geographical location and other factors, and find qualified counterparties. Possible counterparties include other interested buyers or sellers, which vary according to different transaction types. If the smart contract successfully finds qualified counterparties, it will further notify these counterparties that there is a transaction matching them and provide relevant transaction information. The notification method can be carried out through internal system messages, emails, text messages or other appropriate methods. After the notification of Yimatch, the counterparty can view the details and conditions of the transaction request on its user interface. If the counterparty is interested in the transaction and willing to participate, they can confirm the transaction request on the user interface. At the same time, before confirmation, the counterparty can also further communicate and negotiate with the user to adjust the transaction conditions and details to ensure that both parties reach an agreement. These communications can be carried out through the chat function or other communication methods within the system. Once the counterparty confirms the transaction request and reaches an agreement, the smart contract will automatically add the transaction to a new block in the blockchain network. In this way, the transaction data is permanently recorded on the blockchain and cannot be tampered with. All parties involved can view the transaction history; Exemplarily, the specific process of using smart contracts for real estate transactions is as follows: When a user submits a transaction request, the request will be processed by the smart contract. Suppose user A wants to sell a property located in a certain city. User A uses the user interface of the real estate transaction platform and submits a transaction request including the following information: Property address: C, Property description: located in the city center, three bedrooms, area of ​​150 square meters, expected transaction price: 100,000; Transaction conditions: full payment transaction, transfer procedures will be completed within one month after the transaction is completed. After the smart contract receives the transaction request from user A, it starts to match the conditions. It will automatically find a suitable counterparty based on the information in the transaction request, such as the property address, description and expected price. The smart contract will look for other interested buyers or sellers who may be interested in purchasing the property. Suppose user B is a potential buyer who intends to purchase a property. User B also uses the user interface of the real estate transaction platform and submits a transaction request with the following information: Expected purchase property address: C, expected purchase price: 95,000; Transaction conditions: full payment transaction, expected I hope to complete the transfer procedures as soon as possible. The smart contract will automatically match the transaction request of user B with the transaction request of user A. It will compare the real estate address in the transaction request and find that the real estate address that user B wants to buy is the same as the real estate address that user A wants to sell. According to user B's expected purchase price, the smart contract finds that the price at which user B is willing to buy the real estate is close to the expected price at which user A sells the real estate. In this case, the smart contract will determine that the condition match is successful and match user A and user B as counterparties. Next, the smart contract will notify user A and user B that a transaction match is successful, and hope that both parties will further confirm the transaction conditions and negotiate. User A and user B can view the transaction matching information on the system interface and confirm the transaction after reaching an agreement. Once both parties confirm the transaction and complete the transaction recording and verification through the transaction confirmation module, the transaction data will be added to the blockchain network and will be deemed to be completed. Through such a condition matching process, this system realizes automated real estate transaction matching and improves the efficiency and reliability of transactions.

[0021] Step 4: After the transaction is completed, confirm the entry into the chain.

[0022] In an embodiment of the present invention, when the counterparty confirms the transaction request and reaches an agreement, the smart contract adds the transaction data to a new block in the blockchain network; For example, before a new block is added to the blockchain, it needs to be verified by multiple nodes in the blockchain network and reach a consensus. This is an important feature of blockchain technology. Through multi-node verification and consensus, the security and integrity of transaction data are ensured. After the new block is verified and meets the consensus requirements of the network rules, the new block will be added to the blockchain. At this time, the transaction is considered to be completed, and all relevant information, such as the transaction price, the two parties to the transaction, the transaction time, etc., will be permanently stored on the blockchain; For example, the immutability of blockchain ensures the security of transaction data, and any modification of transaction history is impossible, which makes blockchain a reliable transaction record and storage platform, providing a high degree of transparency and security for real estate transactions. After the transaction is completed, the relevant real estate ownership interest transfer or other legal effect of the transaction will be confirmed and protected by law and contract. After the transaction is completed, all parties can view the detailed information and history of the transaction, including the transaction amount, timestamp, identity of the parties, etc. In this way, the transaction data is accessible to any party, which increases the transparency and credibility of the transaction. Through such a transaction completion process, the system realizes secure and tamper-proof real estate transactions, ensuring the reliable recording and verification of transaction data.

[0023] Embodiment 2: Embodiment 2 of the present invention provides a transaction system based on blockchain technology. Figure 2 A schematic diagram of the module composition of a transaction system based on blockchain technology provided in the second embodiment of the present invention is shown in FIG. Figure 2 As shown, the system includes: User transaction request submission module, which is used to process user registration and transaction request submission, as well as verify user identity and create access permissions to the blockchain network; The condition matching and transaction confirmation module is used by smart contracts to match conditions according to the information in the transaction request, find a suitable counterparty, and ensure that the transaction data is added to the blockchain network after the counterparty confirms it; The transaction completion and recording module is used to complete the transfer of real estate ownership rights or other legal effects after the transaction is confirmed and recorded on the blockchain, and ensure that the transaction-related information is permanently stored on the blockchain and cannot be tampered with; In some embodiments of the present invention, the user transaction request submission module includes: User registration module, which is used to process user registration requests, verify user identities, and create permissions for them to access the blockchain network; A transaction request submission module, used to allow users to submit real estate transaction requests and conditions through the interface, including real estate information, transaction price and other necessary terms; The transaction request processing module is used to receive and process transaction requests submitted by users, and pass the request information to the smart contract for condition matching and counterparty search; In some embodiments of the present invention, the condition matching and transaction confirmation module includes: The condition matching module is used by smart contracts to match conditions based on the information in the transaction request and find a suitable counterparty; The counterparty confirmation module is used for the counterparty to review and confirm the transaction conditions after receiving the matching transaction request, and further negotiate with the transaction initiator; The transaction confirmation and blockchain addition module is used to add the transaction data to a new block in the blockchain network to complete the transaction after the counterparty confirms the transaction and reaches an agreement. In some embodiments of the present invention, the transaction completion and recording module includes: The transaction completion module is used to complete the transaction once it is confirmed and recorded on the blockchain, involving the transfer of real estate ownership rights or other legal effects between the two parties; Blockchain verification and consensus module, which is used for new blocks to be verified by multiple nodes in the blockchain network and reach consensus to ensure the security and integrity of transaction data; The transaction record and storage module is used to permanently store transaction-related information, such as transaction price, transaction parties, transaction time, etc. on the blockchain to ensure that the data cannot be tampered with and is trustworthy.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A transaction method based on blockchain technology, characterized by: The method comprises the following steps: Step 1: The user registers his identity and obtains blockchain network permissions; Step 2: The buyer and seller initiate a real estate transaction through a smart contract; Step 3: The system automatically matches the appropriate counterparty based on the transaction conditions; Step 4: After the transaction is completed, confirm the entry into the chain.

2. The transaction method based on blockchain technology according to claim 1, characterized in that: The steps of the user registering their identity and obtaining blockchain network permissions include: The user provides necessary personal information to complete the registration; Use multiple authentication techniques; The system creates a unique identity for each user; The identity is associated with the user address in the blockchain network.

3. The transaction method based on blockchain technology according to claim 2, characterized in that: The user provides necessary personal information to complete the registration process, including: Users access the real estate transaction platform and enter the system interface through an Internet browser or mobile application. Before entering the system interface, users will be required to agree and accept the user agreement and privacy policy to ensure that users understand the processing of their personal information and the protection of transaction data. Next, users need to provide necessary personal information to complete the registration process. This personal information includes but is not limited to name, ID number, contact information, email address. In addition, users can also set a username and password for login and use these credentials to verify their identity when logging in.

4. The transaction method based on blockchain technology according to claim 1, characterized in that: The steps for the buyer and seller to initiate a real estate transaction through a smart contract include: Users upload relevant documents and certification materials to ensure the compliance and authenticity of transaction conditions; After submitting a transaction request, the smart contract automatically matches a suitable counterparty.

5. The transaction method based on blockchain technology according to claim 4 is characterized in that: The steps for the user to upload relevant documents and certification materials to ensure the compliance and authenticity of the transaction conditions include: In the transaction request, the user needs to provide detailed real estate information, including but not limited to the address, description, and transaction price of the real estate. This information will be used to identify the real estate and determine the transaction conditions. The user can also provide other necessary terms, such as payment method and delivery date, to agree on the transaction details. The user has the right to upload relevant documents and supporting materials to verify the compliance and authenticity of the transaction conditions in subsequent steps. These documents include proof of real estate ownership, proof of land use, and legal documents. The uploaded files will be encrypted and stored in the blockchain network to ensure the security and non-tamperability of the transaction data. When filling in the transaction request and conditions, the user can also modify and adjust them as needed until he is satisfied and submits the transaction request.

6. The transaction method based on blockchain technology according to claim 1, characterized in that: The system automatically matches a suitable counterparty according to the transaction conditions, including: Smart contracts automatically check other participants in the blockchain network and find eligible counterparties; Possible counterparties include other interested buyers or sellers, depending on the type of transaction; After confirmation, the smart contract adds the transaction to the blockchain, and the transaction data is permanently recorded and cannot be tampered with.

7. The transaction method based on blockchain technology according to claim 6, characterized in that: After the confirmation, the smart contract adds the transaction to the blockchain, and the transaction data is permanently recorded and cannot be tampered with, including: If the smart contract successfully finds eligible counterparties, it will further notify these counterparties that there is a transaction matching them and provide relevant transaction information. The notification method can be through internal system messages, emails, text messages or other appropriate methods. After receiving the transaction matching notification, the counterparties can view the details and conditions of the transaction request on their user interface. If the counterparties are interested in the transaction and are willing to participate, they can confirm the transaction request on the user interface. At the same time, before confirmation, the counterparties can also further communicate and negotiate with the users to adjust the transaction conditions and details to ensure that both parties reach an agreement. These communications can be conducted through the chat function within the system or other communication methods. Once the counterparties confirm the transaction request and reach an agreement, the smart contract will automatically add the transaction to a new block in the blockchain network. In this way, the transaction data is permanently recorded on the blockchain and cannot be tampered with. All participants can view the transaction history.

8. The transaction method based on blockchain technology according to claim 1, characterized in that: After the transaction is completed, the steps for chain entry confirmation include: After a new block is verified by multiple nodes and consensus is reached, all relevant information is permanently stored on the blockchain; The immutability of blockchain ensures the security and transparency of transaction data, enabling safe and reliable real estate transactions.

9. The transaction method based on blockchain technology according to claim 8, characterized in that: After the new block is verified by multiple nodes and consensus is reached, the steps of permanently storing all relevant information on the blockchain include: Before a new block is added to the blockchain, it needs to be verified by multiple nodes in the blockchain network and reach a consensus. This is an important feature of blockchain technology. The security and integrity of transaction data are ensured through multi-node verification and consensus. After the new block is verified and meets the consensus requirements of the network rules, the new block will be added to the blockchain. At this time, the transaction is considered to be completed, and all relevant information, such as the transaction price, the two parties to the transaction, and the transaction time, will be permanently stored on the blockchain.

10. The transaction system based on blockchain technology is characterized by: The system comprises: User transaction request submission module, which is used to process user registration and transaction request submission, as well as verify user identity and create access permissions to the blockchain network; The condition matching and transaction confirmation module is used by smart contracts to match conditions according to the information in the transaction request, find a suitable counterparty, and ensure that the transaction data is added to the blockchain network after the counterparty confirms it; The transaction completion and recording module is used to complete the transfer of real estate ownership rights or other legal effects after the transaction is confirmed and recorded on the blockchain, and ensure that transaction-related information is permanently stored on the blockchain and cannot be tampered with.

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