International trade credit settlement authentication method and system

Abstract

The invention belongs to the technical field of international trade credit settlement and compliance authentication, and discloses an international trade credit settlement authentication method, which specifically comprises the following steps: step 1, constructing a trade compliance rule digital system; an authentication period of international trade credit settlement is shortened to a minute level, verifiable trade data is acquired in real time from authoritative data sources such as customs, international logistics systems and tax institutions of all countries through a decentralized oracle network, and automatic rule comparison and execution are completed in combination with an intelligent contract embedded into a compliance rule code library. A traditional low-efficiency and error-prone manual document auditing mode is completely replaced; real-time synchronization and automatic adaptation of global trade dynamic supervision rules are achieved, it is ensured that each settlement strictly meets the latest compliance requirements such as making and cutting lists, origin judgment and tax collection, and compliance risks caused by rule updating lag or manual omission are eradicated.

Description

Technical Field

[0001] This invention belongs to the field of international trade credit settlement and compliance certification technology, specifically an international trade credit settlement certification method and system. Background Technology

[0002] With the continuous advancement of economic globalization and the ongoing expansion of international trade, cross-border payments, letters of credit, and other credit settlement methods have become core means to protect the rights and interests of both trading parties and promote the conclusion of transactions. The compliance certifications involved need to meet the regulatory requirements of different trading participants, covering multiple dimensions such as sanctions list verification, origin determination, tax compliance, and logistics tracking.

[0003] Current international trade credit settlements primarily rely on letters of credit or guarantees provided by banks and other financial institutions. The core of these traditional methods lies in banks using their own credit to provide payment guarantees and intermediary services to both trading parties. The implementation process is entirely based on the circulation of paper documents or formatted electronic files and manual review. However, with the increasing complexity of global trade and the increasingly stringent regulatory environment, these decades-old methods have exposed several inherent technical flaws and operational bottlenecks. The certification process is highly dependent on manual labor and time-consuming. The entire settlement process, from document submission, transmission, and review to final payment, heavily relies on the visual inspection and experience-based judgment of bank professionals. Reviewers need to meticulously verify various documents such as commercial invoices, bills of lading, insurance policies, certificates of origin, and quality inspection certificates. Verifying whether the content strictly complies with the terms of the letter of credit and international practices is an extremely cumbersome task, resulting in a complete processing cycle that typically takes 3 to 5 business days or even longer. This is unacceptable for the speed requirements of modern commerce and constitutes a significant labor cost. Furthermore, key verification information is scattered and difficult to exchange in real time, creating information silos. The actual data involved in trade, such as the real-time location of goods, the opening and closing status of containers, the real-time customs clearance results, and the latest product quality inspection reports issued by official institutions, are held in different independent external systems by logistics companies, customs, and quality inspection departments. Banks, as settlement intermediaries, lack the technical means to automatically and directly obtain and verify data from these authoritative sources and can only passively rely on data submitted by the trading parties themselves, which may be... The practice of conducting formal reviews of documents that are subsequently fabricated or even altered creates opportunities for trade fraud due to information asymmetry and data lag. Furthermore, compliance review standards are outdated and inconsistently implemented. International trade is subject to multiple dynamic regulatory rules, including export controls, economic sanctions, environmental protection, and product quality standards. These rules are issued by different countries and international organizations and are frequently updated. In the traditional model, banks need to manually convert textual regulations into internal review checklists, a slow and error-prone process. The specific requirements of different countries and the review standards of different bank branches may also differ, leading to inconsistent and lax compliance risk control. Moreover, the lack of a comprehensive, tamper-proof traceability and automated execution mechanism at each stage of the existing process further complicates matters. The current system is fragmented. Once a dispute arises, it's difficult to quickly and clearly trace the problem to its source—which stage or document caused it. The entire process, including final payment, relies on manual decision-making and operation. It cannot achieve millisecond-level automatic triggering when all pre-set compliance conditions are met. This post-event review and manual intervention model is not only inefficient but also fails to completely prevent significant risks such as payment freezes and fines due to inconsistent documentation or regulatory violations. In summary, existing technologies suffer from fundamental flaws: low processing efficiency, insufficient information verification authenticity, poor dynamic compliance capabilities, and a lack of reliable automated mechanisms. There is an urgent need for a new technological approach that can automate, provide real-time, and highly reliable authentication of trade authenticity and compliance in international trade credit settlement processes.This will fundamentally overcome the aforementioned drawbacks. Summary of the Invention

[0004] The purpose of this invention is to provide an international trade credit settlement authentication method and system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an international trade credit settlement authentication method, the specific steps of which are as follows:

[0006] Step 1: Build a digital system for trade compliance rules, collect trade regulatory rules of major trading participants around the world and perform structured analysis, transform the analyzed regulatory rules into executable code logic for smart contracts to form a compliance rule code library, and set up a dynamic update mechanism for the compliance rule code library to synchronize with the revision information of regulatory rules in various countries;

[0007] Step 2: Deploy a decentralized oracle network, build a decentralized oracle network consisting of multiple independent nodes, configure a security authentication module for each node and deploy a data consensus verification mechanism, and set up a data transmission encryption channel to ensure data transmission security;

[0008] Step 3: Establish a connection mechanism between the oracle network and authoritative external data sources, establish official connection channels with official customs databases of various countries, international logistics tracking system databases, and authoritative external data sources, set up dedicated data access interfaces and deploy data format conversion modules, and establish a data source access permission management system;

[0009] Step 4: Construct an international trade credit settlement smart contract, embed the compliance verification logic from Step 1 into the core execution process of the smart contract, set up a trade participant information entry module and an oracle network data interaction interface, use the compliance verification pass result as a necessary prerequisite for settlement triggering, and deploy a log recording module to record data throughout the entire contract execution process.

[0010] Step 5: Trade participants complete the smart contract information entry and initialization. Both parties to the transaction access the smart contract platform through the blockchain node to complete identity verification, enter relevant transaction information, and generate a unique trade order number after format verification. After confirmation, the smart contract completes initialization and sends a data acquisition preparation instruction to the oracle network.

[0011] Step Six: The oracle network acquires and verifies authoritative trade-related data, sends data requests to authoritative external data sources according to smart contract instructions, each node acquires trade-related data and completes preliminary verification, and sends the data and preliminary verification results to the consensus verification module.

[0012] Step 7: The oracle network performs data consensus verification and returns the results. The consensus verification module cross-compares the data from each node to determine whether the data passes the consensus verification. If the data passes the verification, a standardized data report is generated and sent to the smart contract. If the data fails the verification, it is retrieved again. If the data retrieval fails multiple times, a data retrieval failure message is returned.

[0013] Step 8: The smart contract performs automated compliance verification. After receiving the data report from the oracle network, it calls the corresponding rules in the compliance rule code library to perform compliance verification on each item of the trade data.

[0014] Step Nine: Execute the corresponding settlement operation based on the compliance verification results. If all compliance rule verifications pass, the smart contract automatically generates a payment instruction and sends it to the cross-border payment system, recording the payment completion status. If any verification fails, the settlement process is immediately blocked and a failure report is generated and sent to the relevant parties.

[0015] Step 10: After settlement, archive the compliance data, summarize the data of the entire settlement process to generate a compliance file, store it in the blockchain distributed ledger after encryption, open the compliance file query permission and synchronize it to the enterprise credit rating system.

[0016] Preferably, the trade regulatory rules mentioned in step one include sanctions list rules, rules of origin determination, tax collection rules, import and export licensing rules, environmental compliance rules, and labor compliance rules of the trading partner country. The dynamic update mechanism of the compliance rule code library will record the version mark, update time, update content, and corresponding official basis of the regulatory agency for each update.

[0017] Preferably, the decentralized oracle network in step two has no fewer than 10 nodes, each of which is operated by a different third-party authoritative institution among the following: an international freight association certification body, a cross-border financial regulatory cooperation body, a global trade data service body, and customs-authorized data bodies of various countries. The security authentication module uses an asymmetric encryption algorithm to authenticate the node identity, and the data transmission encryption channel uses the AES-256 encryption algorithm.

[0018] Preferably, the data access interface in step three adopts a standardized data interaction protocol, the data format conversion module is used to convert heterogeneous data output from different data sources into a unified data format that can be recognized by the oracle network, and the data source access permission management system allocates corresponding data source access permissions according to the qualifications and responsibilities of the node operating organization.

[0019] Preferably, the information to be entered by the trade participant information entry module in step four includes the names of the trading parties, unified social credit codes, registered addresses, legal representative information, bank account information, names of traded commodities, commodity codes, commodity quantities, commodity amounts, trade terms, modes of transport, ports of departure, ports of destination, and estimated transport time. The information recorded by the log recording module includes information entry data, oracle data acquisition records, compliance verification results, and contract execution status.

[0020] Preferably, the criterion for data consensus verification in step seven is that more than 80% of the nodes obtain consistent data of the same type and the preliminary verification result is passed, and the number of times the data is re-obtained does not exceed 3 times; the trade-related data in step six includes goods origin certificate data, goods customs declaration data, goods tax payment certificate data, logistics transportation trajectory data, transaction entity qualification verification data, commodity environmental compliance testing data, commodity labor compliance certification data, and verification data on whether the transaction parties are on the sanctions list.

[0021] Preferably, the payment instruction in step nine includes the payer's bank account information, the payee's bank account information, the payment amount, the payment currency, and the payment time. The smart contract will send a settlement start notification to both parties. If the compliance verification fails, the warning mechanism will send a warning message to the designated contact person of both parties via SMS and email. Both parties can supplement the supporting materials and resubmit the compliance verification request.

[0022] Preferably, the compliance file query in step ten requires identity verification, and the data synchronized to the enterprise credit rating system is used for enterprise credit rating. The compliance file data stored in the blockchain distributed ledger is permanently retained and cannot be tampered with.

[0023] An international trade credit settlement authentication system is provided. This system is used to implement the aforementioned international trade credit settlement authentication method and includes the following modules: a digital system module for trade compliance rules, a decentralized oracle network module, an authoritative data source docking module, a trade information input and initialization module, an international trade credit settlement smart contract module, a cross-border payment linkage module, an early warning notification module, and a compliance data archiving and query module.

[0024] The digital system module for trade compliance rules is used to collect and structure the regulatory rules of major trading participants around the world, extract core judgment elements and logical relationships, convert them into smart contract executable code, establish a dynamic update and version traceability mechanism, and output a standardized compliance rule code library and rule update traceability archive.

[0025] The decentralized oracle network module is used to build a network of no fewer than 10 independent nodes operated by authoritative third-party institutions. It ensures security through asymmetric encryption authentication and AES-256 encrypted transmission, performs preliminary data verification and consensus verification, and outputs a standardized trade data report that has passed the consensus of more than 80% of the nodes.

[0026] The authoritative data source docking module is used to establish official docking channels with authoritative data sources such as customs, taxation, and logistics in various countries. It processes heterogeneous data through standardized interfaces and format conversion modules, allocates access permissions based on institutional qualifications, and outputs unified format data that can be recognized by the oracle network.

[0027] The trade information entry and initialization module is used to receive trade information entry from both parties, perform format verification and identity verification, generate a unique trade order number, and output an order initialization confirmation signal and oracle data acquisition preparation instruction.

[0028] The international trade credit settlement smart contract module is used to embed compliance verification logic, realize two-way data interaction with the oracle network, take compliance as the premise for settlement triggering, record the entire process operation log, and output compliance verification results and settlement control signals.

[0029] The cross-border payment linkage module is used to receive smart contract payment instructions, establish an encrypted connection channel with the cross-border payment system, transmit standardized payment information containing key content such as account information and amount, provide feedback on execution results, and output payment completion status records and settlement notifications.

[0030] The early warning notification module is used to generate an anomaly report when compliance verification fails, clarify the type and reason of the failure rule, push early warning information through both SMS and email channels, receive supplementary materials and trigger re-verification, and output compliance failure report and early warning feedback record.

[0031] The compliance data archiving and query module is used to summarize and encrypt the data of the entire settlement process, store it in a blockchain distributed ledger, open hierarchical query permissions based on identity verification, synchronize it to the enterprise credit rating system, and output standardized compliance files and enterprise credit rating support data.

[0032] The beneficial effects of this invention are as follows:

[0033] This system shortens the authentication cycle for international trade credit settlement to the minute level. It obtains verifiable trade data in real time from authoritative data sources such as customs, international logistics systems, and tax authorities in various countries through a decentralized oracle network. Combined with smart contracts embedded with compliance rule code libraries, it automates rule comparison and execution, completely replacing the traditional, inefficient, and error-prone manual document review model. It achieves real-time synchronization and automatic adaptation to global trade dynamic regulatory rules, ensuring that every settlement strictly complies with the latest sanctions lists, rules of origin determination, tax collection, and other compliance requirements, eliminating compliance risks caused by delayed rule updates or human oversight. Simultaneously, key operations, data verification results, and contract execution status throughout the authentication and settlement process are completely and immutably recorded on a blockchain distributed ledger, generating fully traceable compliance authentication certificates, greatly improving transaction transparency and credibility. This not only significantly reduces the manual operation costs and risk of non-compliance compensation for financial institutions but also provides regulatory agencies with an efficient and convenient audit interface, ultimately building a more efficient, secure, and trustworthy international trade credit settlement environment. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the method flow of the present invention;

[0035] Figure 2 This is a system block diagram of the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1 to 2 As shown in the figure, this invention provides an international trade credit settlement authentication method, the specific steps of which are as follows:

[0038] Step 1: Build a digital system for trade compliance rules, collect trade regulatory rules of major trading participants around the world and perform structured analysis, transform the analyzed regulatory rules into executable code logic for smart contracts to form a compliance rule code library, and set up a dynamic update mechanism for the compliance rule code library to synchronize with the revision information of regulatory rules in various countries;

[0039] Step 2: Deploy a decentralized oracle network, build a decentralized oracle network consisting of multiple independent nodes, configure a security authentication module for each node and deploy a data consensus verification mechanism, and set up a data transmission encryption channel to ensure data transmission security;

[0040] Step 3: Establish a connection mechanism between the oracle network and authoritative external data sources, establish official connection channels with official customs databases of various countries, international logistics tracking system databases, and authoritative external data sources, set up dedicated data access interfaces and deploy data format conversion modules, and establish a data source access permission management system;

[0041] Step 4: Construct an international trade credit settlement smart contract, embed the compliance verification logic from Step 1 into the core execution process of the smart contract, set up a trade participant information entry module and an oracle network data interaction interface, use the compliance verification pass result as a necessary prerequisite for settlement triggering, and deploy a log recording module to record data throughout the entire contract execution process.

[0042] Step 5: Trade participants complete the smart contract information entry and initialization. Both parties to the transaction access the smart contract platform through the blockchain node to complete identity verification, enter relevant transaction information, and generate a unique trade order number after format verification. After confirmation, the smart contract completes initialization and sends a data acquisition preparation instruction to the oracle network.

[0043] Step Six: The oracle network acquires and verifies authoritative trade-related data, sends data requests to authoritative external data sources according to smart contract instructions, each node acquires trade-related data and completes preliminary verification, and sends the data and preliminary verification results to the consensus verification module.

[0044] Step 7: The oracle network performs data consensus verification and returns the results. The consensus verification module cross-compares the data from each node to determine whether the data passes the consensus verification. If the data passes the verification, a standardized data report is generated and sent to the smart contract. If the data fails the verification, it is retrieved again. If the data retrieval fails multiple times, a data retrieval failure message is returned.

[0045] Step 8: The smart contract performs automated compliance verification. After receiving the data report from the oracle network, it calls the corresponding rules in the compliance rule code library to perform compliance verification on each item of the trade data.

[0046] Step Nine: Execute the corresponding settlement operation based on the compliance verification results. If all compliance rule verifications pass, the smart contract automatically generates a payment instruction and sends it to the cross-border payment system, recording the payment completion status. If any verification fails, the settlement process is immediately blocked and a failure report is generated and sent to the relevant parties.

[0047] Step 10: After settlement, archive the compliance data, summarize the data of the entire settlement process to generate a compliance file, store it in the blockchain distributed ledger after encryption, open the compliance file query permission and synchronize it to the enterprise credit rating system.

[0048] This system establishes a closed-loop, end-to-end system encompassing the digital construction of compliance rules, deployment of a decentralized oracle network, and integration with authoritative data sources, as well as smart contract execution, information entry, data verification, compliance checks, settlement operations, and compliance archiving. Compliance verification serves as a necessary prerequisite for settlement, standardizing and automating the fragmented trade settlement process. It synchronizes regulatory revisions from various countries through a dynamically updated compliance rule codebase, leverages oracle network consensus verification to ensure data credibility, and utilizes smart contracts for automated verification and settlement. This system completely resolves the problems of cumbersome traditional settlement processes, excessive manual intervention, and low efficiency. Furthermore, it retains operation and data records throughout the process, ensuring compliance and traceability, comprehensively improving the efficiency, security, and compliance of international trade credit settlement, and adapting to the complex needs of multiple stages and rules in global trade.

[0049] In Step One, the trade regulatory rules include rules on sanctions lists of trading partners, rules on rules of origin, rules on tax collection, rules on import and export licenses, rules on environmental compliance, and rules on labor compliance. The dynamic update mechanism of the compliance rules code library will record the version mark, update time, update content, and the corresponding official basis of the regulatory agency for each update.

[0050] Define the specific dimensions of trade regulatory rules to ensure comprehensive compliance coverage. Implement a dynamic update mechanism to synchronize regulatory revisions in various countries. Ensure version traceability and access to official sources to avoid compliance risks caused by rule omissions or delayed updates, thereby improving the accuracy of compliance assessments.

[0051] In step two, the decentralized oracle network has no fewer than 10 nodes. Each node is operated by a different third-party authoritative institution, including the International Freight Forwarders Association certification body, cross-border financial regulatory cooperation body, global trade data service body, and customs-authorized data body of various countries. The security authentication module uses an asymmetric encryption algorithm to authenticate the node identity, and the data transmission encryption channel uses the AES-256 encryption algorithm.

[0052] Multiple third-party authoritative institutions operate nodes to ensure the credibility of data sources. The number of nodes and encryption technologies (asymmetric encryption, AES-256) build a solid network security defense. The consensus verification mechanism improves data reliability and prevents risks such as data tampering, identity forgery and single node failure.

[0053] In step three, the data access interface adopts a standardized data interaction protocol, the data format conversion module is used to convert heterogeneous data output from different data sources into a unified data format that can be recognized by the oracle network, and the data source access permission management system allocates corresponding data source access permissions according to the qualifications and responsibilities of the node operating organization.

[0054] Standardized interfaces and format conversion modules ensure interoperability of heterogeneous data, improve data acquisition and processing efficiency, and the access control system allocates access permissions based on qualifications to ensure access security to authoritative data sources and prevent data leakage or unauthorized use.

[0055] In step four, the information entry module for trade participants requires the entry of the following information: company names, unified social credit codes, registered addresses, legal representative information, bank account information, names of traded commodities, commodity codes, commodity quantities, commodity amounts, trade terms, mode of transport, port of departure, port of destination, and estimated transport time. The log recording module records the following information: information entry data, oracle data acquisition records, compliance verification results, and contract execution status.

[0056] Comprehensive information entry of trade participants provides a complete basis for compliance verification, ensuring that no basic transaction information is omitted, and detailed log records cover key data throughout the process, providing strong support for subsequent traceability, auditing and problem investigation.

[0057] In step seven, the criteria for data consensus verification are that more than 80% of the nodes obtain the same type of data and the preliminary verification result is passed, and the number of times the data is re-obtained does not exceed 3. In step six, the trade-related data includes goods origin certificate data, goods customs declaration data, goods tax payment certificate data, logistics transportation trajectory data, transaction entity qualification verification data, commodity environmental compliance testing data, commodity labor compliance certification data, and verification data on whether the transaction parties are on the sanctions list.

[0058] Consensus verification standards and retry limits ensure the accuracy and efficiency of data verification. Comprehensive trade-related data covers the core dimensions of compliance verification, ensuring no blind spots in compliance judgment and improving the credibility of verification results.

[0059] In step nine, the payment instruction includes the payer's bank account information, the payee's bank account information, the payment amount, the payment currency, and the payment time. The smart contract will send a settlement start notification to both parties. If the compliance verification fails, the warning mechanism will send warning information to the designated contact persons of both parties via SMS and email. Both parties can supplement the supporting materials and resubmit the compliance verification request.

[0060] Complete payment instruction information ensures smooth execution of cross-border payments, dual-channel early warning allows trading parties to promptly grasp compliance issues, supports supplementary materials for re-verification, and balances compliance rigor with operational flexibility to reduce unnecessary transaction disruptions.

[0061] In step ten, the compliance file query requires identity verification. The data synchronized to the enterprise credit rating system is used for enterprise credit rating. The compliance file data stored in the blockchain distributed ledger is permanently retained and cannot be tampered with.

[0062] Blockchain distributed storage ensures that compliant data is permanently immutable, identity verification and query mechanisms guarantee data security, and synchronized enterprise credit rating systems contribute to the construction of a credit system and enhance transaction credibility.

[0063] An international trade credit settlement authentication system is provided. This system is used to implement the aforementioned international trade credit settlement authentication method and includes the following modules: a digital system module for trade compliance rules, a decentralized oracle network module, an authoritative data source docking module, a trade information entry and initialization module, an international trade credit settlement smart contract module, a cross-border payment linkage module, an early warning notification module, and a compliance data archiving and query module.

[0064] The digital system module for trade compliance rules is used to collect and structure the regulatory rules of major trading participants around the world, extract core judgment elements and logical relationships, convert them into smart contract executable code, establish a dynamic update and version traceability mechanism, and output a standardized compliance rule code library and rule update traceability archive.

[0065] The decentralized oracle network module is used to build a network of no fewer than 10 independent nodes operated by authoritative third-party institutions. It ensures security through asymmetric encryption authentication and AES-256 encrypted transmission, performs preliminary data verification and consensus verification, and outputs standardized trade data reports that have passed the consensus of more than 80% of the nodes.

[0066] The authoritative data source docking module is used to establish official docking channels with authoritative data sources such as customs, taxation, and logistics in various countries. It processes heterogeneous data through standardized interfaces and format conversion modules, allocates access permissions based on institutional qualifications, and outputs unified format data that can be recognized by the oracle network.

[0067] The trade information entry and initialization module is used to receive trade information from both parties, perform format verification and identity verification, generate a unique trade order number, and output an order initialization confirmation signal and oracle data acquisition preparation instructions.

[0068] The smart contract module for international trade credit settlement is used to embed compliance verification logic, realize two-way data interaction with the oracle network, take compliance as the premise for settlement triggering, record the entire process operation log, and output compliance verification results and settlement control signals.

[0069] The cross-border payment linkage module is used to receive smart contract payment instructions, establish an encrypted connection channel with the cross-border payment system, transmit standardized payment information containing key information such as account information and amount, provide feedback on execution results, and output payment completion status records and settlement notifications.

[0070] The early warning notification module is used to generate an anomaly report when compliance verification fails, clarify the type and reason of the failure rule, push early warning information through both SMS and email channels, receive supplementary materials and trigger re-verification, and output compliance failure report and early warning feedback record;

[0071] The compliance data archiving and query module is used to summarize and encrypt data from the entire settlement process, store it on a blockchain distributed ledger, grant tiered query permissions based on identity verification, synchronize it to the enterprise credit rating system, and output standardized compliance files and enterprise credit rating support data.

[0072] The constructed system precisely corresponds to the entire process of the aforementioned methods through eight modules, including a digital system of trade compliance rules, a decentralized oracle network, and authoritative data source integration. These modules work together to form a closed loop: the rule digitization module provides dynamically updated compliance evidence; the oracle network module ensures data security and consensus verification; the authoritative data source integration module solves the problem of interoperability of heterogeneous data; the smart contract module connects compliance verification and settlement triggering; the cross-border payment linkage module enables efficient transmission of payment instructions; and the early warning notification and archive query module takes into account both risk warning and traceability needs.

[0073] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0074] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for international trade credit settlement authentication, characterized in that, The specific steps are as follows: Step 1: Build a digital system for trade compliance rules, collect trade regulatory rules of major trading participants around the world and perform structured analysis, transform the analyzed regulatory rules into executable code logic for smart contracts to form a compliance rule code library, and set up a dynamic update mechanism for the compliance rule code library to synchronize with the revision information of regulatory rules in various countries; Step 2: Deploy a decentralized oracle network, build a decentralized oracle network consisting of multiple independent nodes, configure a security authentication module for each node and deploy a data consensus verification mechanism, and set up a data transmission encryption channel to ensure data transmission security; Step 3: Establish a connection mechanism between the oracle network and authoritative external data sources, establish official connection channels with official customs databases of various countries, international logistics tracking system databases, and authoritative external data sources, set up dedicated data access interfaces and deploy data format conversion modules, and establish a data source access permission management system; Step 4: Construct an international trade credit settlement smart contract, embed the compliance verification logic from Step 1 into the core execution process of the smart contract, set up a trade participant information entry module and an oracle network data interaction interface, use the compliance verification pass result as a necessary prerequisite for settlement triggering, and deploy a log recording module to record data throughout the entire contract execution process. Step 5: Trade participants complete the smart contract information entry and initialization. Both parties to the transaction access the smart contract platform through the blockchain node to complete identity verification, enter relevant transaction information, and generate a unique trade order number after format verification. After confirmation, the smart contract completes initialization and sends a data acquisition preparation instruction to the oracle network. Step Six: The oracle network acquires and verifies authoritative trade-related data, sends data requests to authoritative external data sources according to smart contract instructions, each node acquires trade-related data and completes preliminary verification, and sends the data and preliminary verification results to the consensus verification module. Step 7: The oracle network performs data consensus verification and returns the results. The consensus verification module cross-compares the data from each node to determine whether the data passes the consensus verification. If the data passes the verification, a standardized data report is generated and sent to the smart contract. If the data fails the verification, it is retrieved again. If the data retrieval fails multiple times, a data retrieval failure message is returned. Step 8: The smart contract performs automated compliance verification. After receiving the data report from the oracle network, it calls the corresponding rules in the compliance rule code library to perform compliance verification on each item of the trade data. Step Nine: Execute the corresponding settlement operation based on the compliance verification results. If all compliance rule verifications pass, the smart contract automatically generates a payment instruction and sends it to the cross-border payment system, recording the payment completion status. If any verification fails, the settlement process is immediately blocked and a failure report is generated and sent to the relevant parties. Step 10: After settlement, archive the compliance data, summarize the data of the entire settlement process to generate a compliance file, store it in the blockchain distributed ledger after encryption, open the compliance file query permission and synchronize it to the enterprise credit rating system.

2. The international trade credit settlement authentication method according to claim 1, characterized in that: The trade regulatory rules mentioned in Step 1 include sanctions list rules, rules of origin determination, tax collection rules, import and export licensing rules, environmental compliance rules, and labor compliance rules of the trading partner countries. The dynamic update mechanism of the compliance rule code library will record the version mark, update time, update content, and corresponding official basis of the regulatory agency for each update.

3. The international trade credit settlement authentication method according to claim 1, characterized in that: The decentralized oracle network described in step two has no fewer than 10 nodes. Each node is operated by a different third-party authoritative institution, including the International Freight Forwarders Association certification body, cross-border financial regulatory cooperation body, global trade data service body, and customs-authorized data body of various countries. The security authentication module uses an asymmetric encryption algorithm for node identity authentication, and the data transmission encryption channel uses the AES-256 encryption algorithm.

4. The international trade credit settlement authentication method according to claim 1, characterized in that: The data access interface described in step three adopts a standardized data interaction protocol. The data format conversion module is used to convert heterogeneous data output from different data sources into a unified data format that can be recognized by the oracle network. The data source access permission management system allocates corresponding data source access permissions according to the qualifications and responsibilities of the node operating organization.

5. The international trade credit settlement authentication method according to claim 1, characterized in that: The information to be entered in the trade participant information entry module in step four includes the names of the trading parties, unified social credit codes, registered addresses, legal representative information, bank account information, names of traded commodities, commodity codes, commodity quantities, commodity amounts, trade terms, modes of transport, ports of departure, ports of destination, and estimated transport time. The information recorded by the log recording module includes information entry data, oracle data acquisition records, compliance verification results, and contract execution status.

6. The international trade credit settlement authentication method according to claim 1, characterized in that: The criteria for data consensus verification in step seven are that more than 80% of the nodes obtain consistent data of the same type and the preliminary verification result is passed, and the number of times the data is re-obtained does not exceed 3 times; the trade-related data in step six includes goods origin certificate data, goods customs declaration data, goods tax payment certificate data, logistics transportation trajectory data, transaction entity qualification verification data, commodity environmental compliance testing data, commodity labor compliance certification data, and verification data on whether the transaction parties are on the sanctions list.

7. The international trade credit settlement authentication method according to claim 1, characterized in that: The payment instruction in step nine includes the payer's bank account information, the payee's bank account information, the payment amount, the payment currency, and the payment time. The smart contract will send a settlement start notification to both parties in the transaction. If the compliance verification fails, the early warning mechanism will send a warning message to the designated contact person of both parties to the transaction via SMS and email. Both parties can then supplement the supporting documents and resubmit the compliance verification request.

8. The international trade credit settlement authentication method according to claim 1, characterized in that: The compliance file query described in step ten requires identity verification. The data synchronized to the enterprise credit rating system is used for enterprise credit rating. The compliance file data stored in the blockchain distributed ledger is permanently retained and cannot be tampered with.

9. An international trade credit settlement authentication system, the system being used to implement the international trade credit settlement authentication method according to any one of claims 1 to 8, characterized in that, It includes the following modules: Digital System for Trade Compliance Rules, Decentralized Oracle Network, Authoritative Data Source Integration, Trade Information Input and Initialization, International Trade Credit Settlement Smart Contract, Cross-border Payment Linkage, Early Warning Notification, and Compliance Data Archiving and Query. The digital system module for trade compliance rules is used to collect and structure the regulatory rules of major trading participants around the world, extract core judgment elements and logical relationships, convert them into smart contract executable code, establish a dynamic update and version traceability mechanism, and output a standardized compliance rule code library and rule update traceability archive. The decentralized oracle network module is used to build a network of no fewer than 10 independent nodes operated by authoritative third-party institutions. It ensures security through asymmetric encryption authentication and AES-256 encrypted transmission, performs preliminary data verification and consensus verification, and outputs a standardized trade data report that has passed the consensus of more than 80% of the nodes. The authoritative data source docking module is used to establish official docking channels with authoritative data sources such as customs, taxation, and logistics in various countries. It processes heterogeneous data through standardized interfaces and format conversion modules, allocates access permissions based on institutional qualifications, and outputs unified format data that can be recognized by the oracle network. The trade information entry and initialization module is used to receive trade information entry from both parties, perform format verification and identity verification, generate a unique trade order number, and output an order initialization confirmation signal and oracle data acquisition preparation instruction. The international trade credit settlement smart contract module is used to embed compliance verification logic, realize two-way data interaction with the oracle network, take compliance as the premise for settlement triggering, record the entire process operation log, and output compliance verification results and settlement control signals. The cross-border payment linkage module is used to receive smart contract payment instructions, establish an encrypted connection channel with the cross-border payment system, transmit standardized payment information containing key content such as account information and amount, provide feedback on execution results, and output payment completion status records and settlement notifications. The early warning notification module is used to generate an anomaly report when compliance verification fails, clarify the type and reason of the failure rule, push early warning information through both SMS and email channels, receive supplementary materials and trigger re-verification, and output compliance failure report and early warning feedback record. The compliance data archiving and query module is used to summarize and encrypt the data of the entire settlement process, store it in a blockchain distributed ledger, open hierarchical query permissions based on identity verification, synchronize it to the enterprise credit rating system, and output standardized compliance files and enterprise credit rating support data.

Images