Trade financing settlement system based on block chain

Abstract

The invention discloses a block chain-based trade financing settlement system, which comprises a customer login module, an information service module, a data transaction module and a transaction settlement module, and is characterized in that the customer login module is used for a customer to register an account on an asset transaction platform, the customer account is bound with customer information, and the asset transaction platform checks the customer information; the client passing the audit obtains the transaction qualification; the information service module comprises a first operation unit and a second operation unit. By setting the dominant demand and the implicit demand, the individual demand of customer transaction can be better met, the situation that the transaction and settlement negotiation process is passively traded due to exposure of the individual selection tendency of customers is prevented, the settlement process is decentralized, the dependence of financial institutions in the intermediate link is reduced, and the transaction efficiency is improved. The situations that financial institutions are tedious in operation and low in settlement speed in the settlement process are avoided, the credibility of the two clients can be adjusted for each other, and the clients of the opposite sides check own client information according to the credibility.

Description

Technical Field

[0001] The present invention relates to the technical field of blockchain transaction settlement, and in particular to a blockchain-based trade financing settlement system. Background Art

[0002] Blockchain technology is a combination of computer technologies such as distributed data storage, peer-to-peer transmission, consensus mechanism, and encryption algorithm. Blockchain is essentially a decentralized database and a string of data blocks generated using cryptography. Each data block is linked through random hashing (also known as hash algorithm). The latter data block contains the hash value of the previous data block. Blockchain is not a single technology, but the result of multiple technology integration. Using blockchain to maintain a reliable and difficult-to-tamper ledger record can reduce trust risks and effectively reduce maintenance costs for all participants. If data wants to be stored through blockchain, it must obtain consensus from multiple parties involved. Once the data is uploaded to the chain, it cannot be tampered with or forged.

[0003] At present, the Chinese invention with application number 201610584467.4 discloses a processing system based on trade settlement, including a bank processing system, a receiving module located between the customer system and the bank processing system, a process management module, a data processing module, a data cloud backup module, and a message publishing module. One customer first settles with the bank, and then the bank settles with the other customer. It is heavily dependent on banks and other financial institutions, and the operation is cumbersome, the settlement speed is slow, the transaction information between the two customers is not transparent enough, and when matching the buyer and the seller, the personalized needs of the customers are not taken into consideration. Summary of the invention

[0004] The technical problem solved by the present invention is that in the related art, one customer first settles with the bank, and then the bank settles with the other customer, which is heavily dependent on banks and other financial institutions, and the operation is cumbersome, the settlement speed is slow, the transaction information between the two customers is not transparent enough, and when matching the buyer and the seller, the personalized needs of the customers are not taken into consideration.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a trade financing settlement system based on blockchain, including a customer login module, an information service module, a data transaction module and a transaction settlement module, wherein the customer login module is used for customers to register accounts on an asset trading platform, the customer accounts are bound to customer information, the asset trading platform reviews customer information, and customers who pass the review obtain transaction qualifications; the information service module includes a first operation unit and a second operation unit, the first transaction information is input into the first operation unit, the first operation unit generates an explicit demand, the second operation unit is used to analyze the second transaction information of the customer to generate an implicit demand, the second operation unit divides the customer information into different encryption levels, based on the The encryption level encrypts the customer information and generates customer trust according to the encryption level; the data transaction module is used to generate transaction display information according to the customer information and explicit needs, the transaction display information is used for display, and transaction matching information is generated according to the transaction display information and implicit needs, and relevant customers are matched according to the transaction matching information; the transaction settlement module is used to generate a third operation unit according to the matching result, and the transaction parties communicate and adjust the customer trust in the third operation unit. Based on the customer trust set by both parties for each other, the customer information is decrypted, and a transaction order is formed according to the communication result, and the transaction order is verified. After the verification is passed, a settlement order is generated, and settlement is performed, and the transaction order and the settlement order are added to the blockchain network.

[0006] As a preferred solution of the blockchain-based trade finance settlement system described in the present invention, wherein: the customer login module includes a front-end interface unit and an information input unit;

[0007] The front-end interface unit is used for customers to log in to their accounts registered on the asset trading platform. After the customer who has passed the identity verification logs in to the asset trading platform, the customer is redirected to the information input unit;

[0008] The information input unit is used to input customer information and transaction information, and the transaction information includes first transaction information and second transaction information.

[0009] As a preferred solution of the blockchain-based trade finance settlement system described in the present invention, wherein: the information input unit is used for the customer to input the first transaction information and confirm the first transaction information, the first operation unit displays the first transaction requirement, the first transaction requirement is a remark box or a remark option, which is used for the customer to select and check, the first operation unit generates the explicit requirement based on the first transaction information and the first transaction requirement, and after storing the explicit requirement in the first storage space connected to the first operation unit, jumps to the second operation unit;

[0010] The first transaction information includes transaction data, transaction description, transaction amount, transaction time and transaction limit;

[0011] The first transaction requirement includes customer financial data, customer transaction records and customer operating data.

[0012] As a preferred solution of the blockchain-based trade finance settlement system described in the present invention, wherein: the second operation unit is used for the customer to input the second transaction information, the second operation unit extracts metadata corresponding to the second transaction information, extracts information from the metadata, obtains a second transaction requirement, generates an implicit requirement according to the second transaction requirement, and stores the implicit requirement in a second storage space connected to the first operation unit;

[0013] The second transaction information is the customer's personalized transaction content, including the geographical requirements, legal requirements, performance and personnel certificates of the transaction object.

[0014] As a preferred solution of the blockchain-based trade finance settlement system of the present invention, the second operating unit divides the customer information into different encryption levels, encrypts the customer information based on the encryption level, and generates the customer trust according to the encryption level, including:

[0015] Differentiate encryption levels for customer information according to the confidentiality of the customer information content, encrypt the customer information content using the elliptic curve encryption algorithm according to the encryption level, generate different encrypted information according to the encryption level, and set the customer trust level according to the encryption level;

[0016] Different levels of customer trust are used to view customer information at or below the corresponding encryption level, and the second operating unit stores the encrypted customer information in the third storage space.

[0017] As a preferred solution of the blockchain-based trade finance settlement system described in the present invention, wherein: the data transaction module desensitizes the customer's non-encrypted information, the data transaction module retrieves the explicit demand in the first storage space, and splices the desensitized non-encrypted information with the explicit demand to generate transaction display information;

[0018] The data transaction module retrieves the implicit demand in the second storage space, splices the implicit demand with the transaction display content to generate transaction matching information, and the transaction display information and the transaction display content correspond to each other, displays the transaction display information, and hides the transaction matching information.

[0019] As a preferred solution of the blockchain-based trade financing settlement system described in the present invention, wherein: the data transaction module retrieves the transaction matching information corresponding to the transaction display information, extracts keywords from the transaction matching information, and generates a first keyword set;

[0020] The data transaction module retrieves the customer information in the customer login module, extracts keywords from the customer information, generates a second keyword set, and binds the second keyword set to the corresponding customer;

[0021] The data transaction module matches the keywords in the first keyword set with the second keyword set in sequence using a matching algorithm, and sorts the customers from most to least according to the number of successful matches as a matching result.

[0022] As a preferred solution of the blockchain-based trade finance settlement system described in the present invention, wherein:

[0023] The data transaction module selects customers with fixed rankings as target customers according to the matching results;

[0024] The data transaction module regards the customer and each of the target customers as transaction parties, respectively, and constructs a third operation unit, respectively, wherein the third operation unit is a chat window;

[0025] The third operation unit is used for communication between the transaction parties. During the communication process, the customer adjusts the customer trust of the other customer. When the other customer checks the customer information, the encrypted customer information in the third storage space is retrieved, and the customer information of the corresponding encryption level is checked according to its own customer trust.

[0026] As a preferred solution of the blockchain-based trade financing settlement system described in the present invention, the transaction settlement module forms a transaction order based on the communication results, and sends the transaction order to the two transaction parties in the third operation unit respectively. The two transaction parties confirm the transaction order, and the data transaction module verifies the accuracy and compliance of the transaction information of the two transaction parties, and performs settlement after verification based on the confirmed settlement conditions and data.

[0027] As a preferred solution of the blockchain-based trade financing settlement system described in the present invention, the transaction settlement module sends the settlement order after successful settlement to the two parties to the transaction in the third operation unit respectively, and the two parties to the settlement reconfirm the settlement result, add the settlement order and settlement result to the blockchain network, and display the settlement order and settlement result anonymously.

[0028] Beneficial effects of the present invention:

[0029] By setting explicit and implicit demands, the personalized transaction needs of customers can be better met, and the exposure of personalized selection tendencies of customers can be prevented, which would put them in a passive position during transaction and settlement negotiations. The settlement process is decentralized, reducing the dependence on financial institutions in the middle, and avoiding the cumbersome operations of financial institutions and slow settlement during the settlement process. In addition, both customers can adjust the trust between each other, and the other customer can view their own customer information based on the trust. While transaction and settlement information is more transparent, it can also protect the business secrets of its own customers, reducing the risks and costs of settlement. In addition, the tamper-proof nature of blockchain ensures the credibility and integrity of financial data, making financial data more reliable and trustworthy.

[0030] The transaction order can be sent to both parties for verification. After the verification is passed, the settlement is automatically completed through the transaction settlement module. After the settlement is successful, the settlement order will be added to the blockchain network for storage. The initial verification of the transaction order can filter out invalid or unreasonable transaction requests and confirm the settlement order, which is convenient for timely viewing of the settlement results, improving the security and efficiency of the entire system, and ensuring that the transaction orders comply with the predetermined rules and constraints, thereby ensuring the security and compliance of the settlement and reducing potential risks and disputes. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the basic process of a blockchain-based trade finance settlement system provided for one embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments.

[0033] Example 1

[0034] Reference Figure 1 , which is an embodiment of the present invention, provides a blockchain-based trade financing settlement system, including a customer login module, an information service module, a data transaction module and a transaction settlement module. The customer login module is used for customers to register accounts on the asset trading platform, and the customer accounts are bound to customer information. The asset trading platform reviews customer information, and customers who pass the review obtain trading qualifications.

[0035] Customer information can be bound to customer accounts through the customer login module. The asset trading platform reviews customer information. Customers who pass the review obtain trading qualifications. The customer's qualifications and funds can be reviewed, which is conducive to ensuring the security of financial transactions and improving customer trust in the other party's customers.

[0036] The information service module includes a first operation unit and a second operation unit. The first transaction information is input into the first operation unit, and the first operation unit generates an explicit demand. The second operation unit is used to analyze the second transaction information of the customer and generate an implicit demand. The second operation unit divides the customer information into different encryption levels, encrypts the customer information based on the encryption level, and generates customer trust according to the encryption level; the data transaction module is used to generate transaction display information according to the customer information and explicit demand, and the transaction display information is used for display. Transaction matching information is generated according to the transaction display information and implicit demand, and related customers are matched according to the transaction matching information; the transaction settlement module is used to generate a third operation unit according to the matching result. The transaction parties communicate and adjust the customer trust in the third operation unit. Based on the customer trust set by both parties for each other, the customer information is decrypted. According to the communication results, a transaction order is formed, and the transaction order is verified. If the verification passes, a settlement order is generated, and settlement is performed, and the transaction order and the settlement order are added to the blockchain network.

[0037] The transaction settlement module sends the settlement order after successful settlement to the transaction parties in the third operation unit respectively. The settlement parties reconfirm the settlement result, add the settlement order and settlement result to the blockchain network, and display the settlement order and settlement result anonymously.

[0038] By setting explicit and implicit demands, the personalized transaction needs of customers can be better met, and the exposure of personalized selection tendencies of customers can be prevented, which would put them in a passive position during transaction and settlement negotiations. The settlement process is decentralized, reducing the dependence on financial institutions in the middle, and avoiding the cumbersome operations of financial institutions and slow settlement during the settlement process. In addition, both customers can adjust the trust between each other, and the other customer can view their own customer information based on the trust. While transaction and settlement information is more transparent, it can also protect the business secrets of its own customers, reducing the risks and costs of settlement. In addition, the tamper-proof nature of blockchain ensures the credibility and integrity of financial data, making financial data more reliable and trustworthy.

[0039] The transaction order can be sent to both parties for verification. After the verification is passed, the settlement is automatically completed through the transaction settlement module. After the settlement is successful, the settlement order will be added to the blockchain network for storage. The initial verification of the transaction order can filter out invalid or unreasonable transaction requests and confirm the settlement order, which is convenient for timely viewing of the settlement results, improving the security and efficiency of the entire system, and ensuring that the transaction orders comply with the predetermined rules and constraints, thereby ensuring the security and compliance of the settlement and reducing potential risks and disputes.

[0040] The customer login module includes a front-end interface unit and an information input unit;

[0041] The front-end interface unit is used for customers to log in to their accounts registered on the asset trading platform. After the customer who has passed the identity verification logs in to the asset trading platform, the customer is redirected to the information input unit;

[0042] The information input unit is used to input customer information and transaction information, and the transaction information includes first transaction information and second transaction information.

[0043] The information input unit is used for the customer to input first transaction information and confirm the first transaction information. The first operation unit displays a first transaction requirement, which is a remark box or a remark option for the customer to select and check. The first operation unit generates the explicit requirement based on the first transaction information and the first transaction requirement, and stores the explicit requirement in a first storage space connected to the first operation unit, and then jumps to the second operation unit.

[0044] The first transaction information includes transaction data, transaction description, transaction amount, transaction time and transaction limit;

[0045] The first transaction requirement includes customer financial data, customer transaction records and customer operating data.

[0046] The second operating unit is used for the customer to input the second transaction information, the second operating unit extracts metadata corresponding to the second transaction information, extracts information from the metadata, obtains a second transaction requirement, generates an implicit requirement according to the second transaction requirement, and stores the implicit requirement in a second storage space connected to the first operating unit;

[0047] The second transaction information is the customer's personalized transaction content, including the geographical requirements, legal requirements, performance and personnel certificates of the transaction object.

[0048] The second operating unit divides the customer information into different encryption levels, encrypts the customer information based on the encryption levels, and generates customer trust according to the encryption levels, including:

[0049] Differentiate encryption levels for customer information according to the confidentiality of the customer information content, encrypt the customer information content using the elliptic curve encryption algorithm according to the encryption level, generate different encrypted information according to the encryption level, and set the customer trust level according to the encryption level;

[0050] Different levels of customer trust are used to view customer information at or below the corresponding encryption level, and the second operating unit stores the encrypted customer information in the third storage space.

[0051] In one of the embodiments, the customer's trust level is set to three levels. The first level is general, and the first level only contains basic and transaction-related information. Customers whose customer trust is set to the first level can only view basic and transaction-related information; the second level is partial trust, and the second level contains part of the customer's business information, financial information, and transaction information, and the key parts are hidden. Customers whose customer trust is set to the second level can only view part of the customer's business information, financial information, and transaction information and the information at the first level; the third level is full trust, and the third level contains all the customer's business information, financial information, and transaction information. Customers whose customer trust is set to the third level can view all the customer's business information, financial information, and transaction information as well as the information at the first level, which facilitates deep cooperation and binding transactions while protecting customer information.

[0052] The data transaction module desensitizes the non-encrypted information of the customer, retrieves the explicit demand in the first storage space, and splices the non-encrypted information after the desensitization process with the explicit demand to generate transaction display information;

[0053] The data transaction module retrieves the implicit demand in the second storage space, splices the implicit demand with the transaction display content to generate transaction matching information, and the transaction display information and the transaction display content correspond to each other, displays the transaction display information, and hides the transaction matching information.

[0054] The implicit demand in the second storage space is retrieved, and the implicit demand is spliced ​​with the transaction display content to generate transaction matching information. The transaction display information corresponds to the transaction display content, and the transaction display information is displayed, and the transaction matching information is hidden. By hiding the transaction matching information, it is possible to match target customers who meet the implicit demand while disclosing the transaction display information. By setting explicit and implicit demands, it is possible to better meet the personalized transaction needs of customers, and prevent the personalized selection tendency of customers from being exposed, which leads to being passive in the transaction negotiation process.

[0055] The data transaction module retrieves the transaction matching information corresponding to the transaction display information, extracts keywords from the transaction matching information, and generates a first keyword set;

[0056] The data transaction module retrieves the customer information in the customer login module, extracts keywords from the customer information, generates a second keyword set, and binds the second keyword set to the corresponding customer;

[0057] The data transaction module matches the keywords in the first keyword set with the second keyword set in sequence using a matching algorithm, and sorts the customers from most to least according to the number of successful matches as a matching result, wherein the matching algorithm is a hash function.

[0058] By inputting the keywords of the first keyword set into the hash function in sequence, the hash function matches multiple qualified target customers through the mapping relationship between the first keyword set and the second keyword set, and counts the number of times the target customers appear. The more times they appear, the more keywords that match, and the higher the degree of satisfaction with the transaction matching information.

[0059] The data transaction module selects customers with fixed rankings as target customers according to the matching results.

[0060] In one of the embodiments, five customers who appear most frequently are selected as target customers.

[0061] The data transaction module regards the customer and each of the target customers as transaction parties, respectively, and constructs a third operation unit, respectively, wherein the third operation unit is a chat window;

[0062] The third operation unit is used for communication between the transaction parties. During the communication process, the customer adjusts the customer trust of the other customer. When the other customer checks the customer information, the encrypted customer information in the third storage space is retrieved, and the customer information of the corresponding encryption level is checked according to its own customer trust.

[0063] The transaction settlement module forms a transaction order based on the communication results, and sends the transaction order to both parties to the transaction in the third operation unit respectively. Both parties to the transaction confirm the transaction order. The data transaction module verifies the accuracy and compliance of the transaction information of both parties to the transaction, and performs settlement after verification based on the confirmed settlement conditions and data.

[0064] The transaction settlement module sends the settlement order after successful settlement to both parties of the transaction in the third operation unit respectively. The two parties of the settlement reconfirm the settlement result, add the settlement order and the settlement result to the blockchain network, and display the settlement order and the settlement result anonymously.

[0065] By setting explicit and implicit demands, the personalized transaction needs of customers can be better met, and the exposure of personalized selection tendencies of customers can be prevented, which would lead to passiveness in the transaction and settlement negotiation process. The settlement process is decentralized, reducing the dependence on financial institutions in the middle, avoiding the cumbersome operations of financial institutions and slow settlement during the settlement process. In addition, both customers can set trust levels for each other, and the other customer can view their own customer information based on the trust level. While transaction and settlement information is more transparent, it can also protect the business secrets of its own customers, reducing the risks and costs of settlement. In addition, the tamper-proof nature of blockchain ensures the credibility and integrity of financial data, making financial data more reliable and trustworthy.

[0066] The transaction order can be sent to both parties for verification. After the verification is passed, the settlement is automatically completed through the transaction settlement module. After the settlement is successful, the settlement order will be added to the blockchain network for storage. The initial verification of the transaction order can filter out invalid or unreasonable transaction requests and confirm the settlement order, which is convenient for timely viewing of the settlement results, improving the security and efficiency of the entire system, and ensuring that the transaction orders comply with the predetermined rules and constraints, thereby ensuring the security and compliance of the settlement and reducing potential risks and disputes.

[0067] It should be appreciated that embodiments of the present invention may be implemented or enforced by a combination of computer hardware and software, or by computer instructions stored in a non-transitory computer-readable memory. The system may be implemented in a computer program using standard programming techniques - including a non-transitory computer-readable storage medium configured with a computer program, wherein the storage medium so configured causes the computer to operate in a specific and predefined manner - according to the methods and drawings described in the specific embodiments. Each program may be implemented in a high-level procedural or object-oriented programming language to communicate with the computer system. However, if desired, the program may be implemented in an assembly or machine language. In any case, the language may be a compiled or interpreted language. In addition, the program may be run on a programmed ASIC for this purpose.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. The blockchain-based trade finance settlement system is characterized by: include: A customer login module, which is used by customers to register accounts on the asset trading platform, bind customer information to customer accounts, and the asset trading platform reviews customer information. Customers who pass the review obtain trading qualifications; An information service module, wherein the information service module includes a first operating unit and a second operating unit, wherein the first transaction information is input into the first operating unit, the first operating unit generates an explicit demand, the second operating unit is used to analyze the second transaction information of the customer and generate an implicit demand, the second operating unit divides the customer information into different encryption levels, encrypts the customer information based on the encryption level, and generates a customer trust level according to the encryption level; A data transaction module, wherein the data transaction module is used to generate transaction display information according to customer information and explicit needs, the transaction display information is used for display, transaction matching information is generated according to the transaction display information and implicit needs, and relevant customers are matched according to the transaction matching information; A transaction settlement module is used to generate a third operation unit according to the matching result. The transaction parties communicate and adjust the customer trust in the third operation unit. Based on the customer trust set by both parties for each other, the customer information is decrypted. According to the communication result, a transaction order is formed and the transaction order is verified. If the verification is passed, a settlement order is generated, and settlement is performed. The transaction order and the settlement order are added to the blockchain network.

2. The blockchain-based trade finance settlement system according to claim 1, characterized in that: The customer login module includes a front-end interface unit and an information input unit; The front-end interface unit is used for customers to log in to their accounts registered on the asset trading platform. After the customer who has passed the identity verification logs in to the asset trading platform, the customer is redirected to the information input unit; The information input unit is used to input customer information and transaction information, and the transaction information includes first transaction information and second transaction information.

3. The blockchain-based trade finance settlement system according to claim 2, characterized in that: The information input unit is used for the customer to input first transaction information and confirm the first transaction information. The first operation unit displays a first transaction requirement, which is a remark box or a remark option for the customer to select and check. The first operation unit generates the explicit requirement based on the first transaction information and the first transaction requirement, and stores the explicit requirement in a first storage space connected to the first operation unit, and then jumps to the second operation unit. The first transaction information includes transaction data, transaction description, transaction amount, transaction time and transaction limit; The first transaction requirement includes customer financial data, customer transaction records and customer operating data.

4. The blockchain-based trade finance settlement system according to claim 3, characterized in that: The second operating unit is used for the customer to input the second transaction information, the second operating unit extracts metadata corresponding to the second transaction information, extracts information from the metadata, obtains a second transaction requirement, generates an implicit requirement according to the second transaction requirement, and stores the implicit requirement in a second storage space connected to the first operating unit; The second transaction information is the customer's personalized transaction content, including the geographical requirements, legal requirements, performance and personnel certificates of the transaction object.

5. The blockchain-based trade finance settlement system according to claim 4, characterized in that: The second operating unit divides the customer information into different encryption levels, encrypts the customer information based on the encryption levels, and generates customer trust according to the encryption levels, including: Differentiate encryption levels for customer information according to the confidentiality of the customer information content, encrypt the customer information content using the elliptic curve encryption algorithm according to the encryption level, generate different encrypted information according to the encryption level, and set the customer trust level according to the encryption level; Different levels of customer trust are used to view customer information at or below the corresponding encryption level, and the second operating unit stores the encrypted customer information in the third storage space.

6. The blockchain-based trade finance settlement system according to claim 5, characterized in that: The data transaction module desensitizes the non-encrypted information of the customer, retrieves the explicit demand in the first storage space, and splices the non-encrypted information after the desensitization process with the explicit demand to generate transaction display information; The data transaction module retrieves the implicit demand in the second storage space, splices the implicit demand with the transaction display content to generate transaction matching information, and the transaction display information and the transaction display content correspond to each other, displays the transaction display information, and hides the transaction matching information.

7. The blockchain-based trade finance settlement system according to claim 6, characterized in that: The data transaction module retrieves the transaction matching information corresponding to the transaction display information, extracts keywords from the transaction matching information, and generates a first keyword set; The data transaction module retrieves the customer information in the customer login module, extracts keywords from the customer information, generates a second keyword set, and binds the second keyword set to the corresponding customer; The data transaction module matches the keywords in the first keyword set with the second keyword set in sequence using a matching algorithm, and sorts the customers from most to least according to the number of successful matches as a matching result.

8. The blockchain-based trade finance settlement system according to claim 7, characterized in that: The data transaction module selects customers with fixed rankings as target customers according to the matching results; The data transaction module regards the customer and each of the target customers as transaction parties, respectively, and constructs a third operation unit, respectively, wherein the third operation unit is a chat window; The third operation unit is used for communication between the transaction parties. During the communication process, the customer adjusts the customer trust of the other customer. When the other customer checks the customer information, the encrypted customer information in the third storage space is retrieved, and the customer information of the corresponding encryption level is checked according to its own customer trust.

9. The blockchain-based trade finance settlement system according to claim 8, characterized in that: The transaction settlement module forms a transaction order based on the communication results, and sends the transaction order to both parties to the transaction in the third operation unit respectively. Both parties to the transaction confirm the transaction order. The data transaction module verifies the accuracy and compliance of the transaction information of both parties to the transaction, and performs settlement after verification based on the confirmed settlement conditions and data.

10. The blockchain-based trade finance settlement system according to claim 9, characterized in that: The transaction settlement module sends the settlement order after successful settlement to both parties of the transaction in the third operation unit respectively. The two parties of the settlement reconfirm the settlement result, add the settlement order and the settlement result to the blockchain network, and display the settlement order and the settlement result anonymously.

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