A payment system that integrates crypto assets and fiat currencies

Abstract

Conventional cryptocurrency payment systems are cumbersome due to the need for exchange with fiat currency, collaboration with institutions that provide asset exchange functions, and tax procedures, and transaction delays and high costs have been barriers to their widespread adoption. Another issue is the lack of an integrated payment system that can handle a variety of digital assets, such as NFTs and tokens. [Solution] This invention provides a system that integrates institutional collaboration and tax processing, providing settlement and asset exchange functions, and realizes real-time selection of optimal exchange rates, high-speed transaction processing, and automatic generation of tax data. Furthermore, it solves existing problems as an integrated platform that supports crypto assets, fiat currencies, and digital assets.

Description

[Technical Field]

[0001] The invention relates to an integrated payment system for crypto assets and fiat currencies, and in particular to providing a seamless payment platform that includes an institutional collaboration function that provides asset exchange functionality and a tax processing function. [Background technology]

[0002] Currently, there are payment systems that handle both crypto assets and fiat currencies, but they face the following challenges: 1. The payment process is decentralized, making it difficult for users to operate. 2. It is difficult to obtain the optimal exchange rate using institutions that offer multiple asset exchange functions. 3. The generation and management of tax data is often done manually, which is time-consuming and labor-intensive.

[0003] Conventional systems require operations across multiple platforms, resulting in a fragmented user experience. To address this issue, the present invention provides integrated operability on a single platform.

[0004] This invention is based on block DAG technology, a form of distributed ledger technology (DLT). Block DAG (Directed Acyclic Graph) generates multiple blocks in parallel, enabling high-throughput and low-latency transaction processing. While conventional blockchain technology relies on serial processing, block DAG allows for parallel processing, thereby enabling high-speed processing of large volumes of transactions. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to solve the following problems: 1. To provide a platform that handles both crypto assets and fiat currencies in an integrated manner and can be used seamlessly by users. 2. To utilize APIs with systems that have multiple asset exchange functions to provide optimal exchange rates in real time. 3. To realize an automatic tax processing function based on payment data, thereby reducing the burden of tax management. Definition of Terms

[0006] In this specification, "a system or institution that provides asset exchange functionality" refers to a technological system or entity that provides the exchange, trading, and holding of crypto assets, fiat currency, securities, and other assets, including crypto asset exchanges, securities companies, banks, and decentralized exchange systems (such as smart contracts).

[0007] Crypto assets, fiat currencies, and Web3 assets (NFTs, tokens, Soulbound Tokens (SBT), and new digital assets emerging in the future). A payment system that integrates and manages the payment method selected by the user. Based on Pre-load or real-time debit transactions and multiple asset exchange capabilities a platform having service, finance institution, or peer-to-peer (P2P) networks API Integration Or connect directly to apply dynamic asset exchange rate optimization algorithms, The best exchange rate In real time Functions to be acquired Based on transaction data Automate tax processing functions and related data generation functions, Characterized by accurate and proper tax calculation and recording for each transaction; Payment, asset exchange, and tax processing functions mutually Integrated A single payment system characterized by the following advanced features and optimized processes: Payment System Wallet management function: NFTs, Web3 assets, tokens, digital assets, and fiat currencies Users can load funds into a single wallet and check their balance in real time. It allows seamless use in retail stores, online stores, and Web3 marketplaces, and automatically converts loaded assets into points, crypto assets, and fiat currency. Identity verification and security features: It features a multi-layered identity verification process using driver's licenses, health insurance cards, and My Number cards, and is KYC / AML compliant. It also supports My Number integration for regulatory compliance. Payment processing: Users launch the payment interface via the app, web browser, or API integration and select "Payment" from the home screen to begin operations. Multiple payment methods are available, including QR codes, NFC, prepaid cards, debit cards, credit cards, PoS terminals, biometric authentication (fingerprint, face, iris), decentralized IDs (DIDs), and zero-knowledge proofs (ZKPs). It is interoperable with existing QR code payment services, selecting the optimal asset exchange rate for users' payments and conducting real-time exchanges between Web3 assets, NFTs, crypto assets, and fiat currency. Real-time transaction management: The transaction amount, selected asset, and exchange rate are displayed on the interface, and the user's on-chain and off-chain balances are verified in real time, allowing the required asset exchange to be immediately carried out. When the user selects "Pay," the payment is completed, and a "Payment Completed" notification is instantly displayed to the user. Transaction history and tax data can be viewed via the app, web, or API. Tax processing: The system receives user payment data and generates a unique transaction ID. It has an initial data processing function that analyzes QR codes, payment amounts, and counterparty information. It connects directly or via API with multiple asset exchange platforms, services, financial institutions, or P2P networks. It integrates with distributed ledger technology (DLT) using block DAG technology, other DLT technologies, and off-chain payment systems to obtain exchange rates in real time, select the optimal rate, and execute a multi-layered verification process that includes user authentication, wallet balance verification, and KYC verification.It generates payment requests based on transaction details, executes the necessary asset exchanges, converts crypto assets to fiat currency according to user-specified conditions, automatically generates tax data based on transaction data through internal processing or an external API, applies international tax compliance logic to calculate accurate tax amounts for each transaction, sends a completion notification to the user after payment is completed, and securely records transaction data. It automatically calculates and reflects user reward points and cashback in the wallet. Security and Scalability: High security is ensured by using strong encrypted communication protocols such as OAuth 2.0 and TLS / SSL, combined with multi-factor authentication (biometric authentication, SMS code authentication, dedicated app authentication, decentralized ID (DID), and zero-knowledge proof (ZKP)). It supports payments in Web3 marketplaces and decentralized applications (DApps) and is seamlessly integrated with NFT marketplaces and DeFi protocols. It provides an interface that can be used interchangeably with existing machine-readable code payment services, and is scalable to accommodate future CBDCs (central bank digital currencies), stablecoins, and other new forms of currency. It is a payment system characterized by its flexible integration with distributed ledger technology (DLT) and other emerging technologies.

[0008] In the integrated system according to claim 1, a user can use a QR code, an NFC, a prepaid card, a debit card, credit card, PoS terminals, biometric authentication (fingerprint authentication, face authentication, iris authentication), decentralized ID (DID), zero-knowledge proof (ZKP), or electronic money payment Enter payment data using Transactions are processed in real time based on the payment method selected A payment system characterized by:

[0009] In connection with the payment system according to claim 1, Multiple asset exchange functions Dynamically connect with platforms, services, financial institutions, or peer-to-peer (P2P) networks through API integration or direct connection.Compare rates between systems in real time to find the best exchange rate Automatically select and Exchange crypto assets and fiat currencies It has the function of Secure with real-time data acquisition, authenticated API connections, direct connections, and encrypted communication protocols and ensure high speed. exchange A payment system that improves the efficiency and reliability of transactions by centrally managing the entire process.

[0010] The payment system according to claim 1, User location and transaction In content Based on this, we will develop logic that can be adapted to international tax systems. Apply, Automate tax data generation and provide documentation or data for tax reporting purposes through internal systems or external APIs A payment system that features tax processing functionality, enabling appropriate tax calculation and recording for each transaction, improving tax compliance in international transactions.

[0011] The payment system according to claim 1, Leveraging the real-time transaction processing capabilities of the Kaspa network, it achieves instant confirmation and high scalability, optimizing performance when processing large volumes of transactions and providing resistance to 51% attacks. A payment system that has security functions, provides a fast and safe payment environment, and improves the reliability of cryptocurrency transactions.

[0012] Claim 1 The integrated system described above has a multi-asset compatibility function that handles NFTs, tokens, stablecoins, crypto assets, and legal tender in an integrated manner, executes mutual exchanges between different assets in real time based on the rate conditions and exchange priority set by the user, immediately displays the transaction results visually on the user interface of the integrated system, and automatically converts assets selected by the user into any format (instant conversion to legal tender, crypto assets, digital assets, NFTs, tokens, stablecoins).

[0013] A payment system according to claim 1, comprising:A payment system characterized by having an integrated platform that integrates payment functions, asset exchange functions, and tax processing functions, providing users with these functions on a single platform, and interlinking real-time and non-real-time payment processing, asset exchange processing, and tax data generation through API integration, system integration, data integration, automatic integration with smart contracts and distributed systems, or other integration methods.

[0014] In the payment system according to claim 7, for high-value and low-value transactions, a function for processing the transaction as multiple partial remittances, or automatic scheduling and conditional remittance (transaction amount, exchange rate, Trading hours conditions A payment system characterized by having a function to execute (including the above).

[0015] The payment system described in claim 7 is characterized by having the function of enabling real-time conversion and transfer between crypto assets and multiple legal currencies, thereby improving the efficiency of international transactions.

[0016] The payment system described in claim 7 is characterized in that when transferring funds between corporations, it is equipped with a hedging function that monitors exchange rate fluctuations in real time through an API with a system that has asset exchange functions and reduces exchange rate risk.

[0017] The settlement system described in claim 7 is characterized by having a function of automatically recording transaction history related to inter-company remittances and generating reports for regulatory compliance and audit purposes.

[0018] The payment system described in claim 7 is characterized by having a function that enables safe and fast remittance of high-value and low-value transactions between corporations, and mitigation of exchange risk through API connection, integrated connection or automatic collaboration with systems or institutions that provide asset exchange functions.

[0019] The system described in claim 3 prevents unauthorized access and transaction tampering by combining transaction signature and multi-factor authentication in addition to authentication protocols (OAuth2.0, TLS / SSL), and the multi-factor authentication includes biometric authentication (fingerprint or face authentication), SMS code authentication, or approval by a dedicated app.

[0020] This invention has the following effects: 1. Users can use crypto assets and fiat currencies in an integrated manner, greatly improving convenience. 2. By utilizing APIs with systems that have multiple asset exchange functions, optimal exchange rates can be provided, enabling cost reductions. 3. Tax processing is automated, reducing time and effort. 4. A platform that integrates settlement, institutional collaboration that provides asset exchange functions, and tax processing allows differentiation from competitors.

[0021] It is also a system that integrates cryptocurrency and fiat currency payments, achieving the following integration capabilities: 1. Seamless switching: Users can choose to use either cryptocurrency or fiat currency, and the optimal currency is automatically switched in real time at the time of payment. 2. API integration with systems that have asset exchange functions: Real-time exchange rates are obtained from institutions that provide multiple asset exchange functions, enabling efficient exchange between cryptocurrency and fiat currency. 3. International applicability: Users from multiple countries with different fiat currencies can trade on the same system. This will increase interoperability between cryptocurrency and fiat currency, improving the user experience. [Brief explanation of the drawings]

[0022] [Figure 1] : Shows the overall system configuration diagram (user side). [Figure 2] : Shows the overall system configuration diagram (system side). [Figure 3] : Shows the process flow of the payment function (user side). [Figure 4] : Shows the process flow (system side) of the payment function. [Figure 5]: Shows the process flow (user side) of the institutional collaboration function that provides asset exchange functionality. [Figure 6] : Shows the process flow (system side) of the institutional collaboration function that provides the asset exchange function. [Figure 7] : Shows the process flow (user side) of the tax processing function. [Figure 8] : Shows the process flow (system side) of the tax processing function. [Figure 9] : A detailed flow of collaboration between the institution providing the asset exchange function and the Kaspa network is shown. [Figure 10] : Shows existing settlement and multi-asset support flows. [Figure 11] : Shows the detailed flow of the platform and integrated payment system. [Figure 12] : Shows the overall structure and flow. [Figure 13] : Shows the user operation flow. [Figure 14] : Specific examples for each use case are provided. [Figure 15] :Explanation of Kaspa Network:Comparing blockchain structure and block DAG structure. DETAILED DESCRIPTION OF THE INVENTION

[0023] The overall system configuration of the present invention is as follows: [Figure 1][Figure 2] As shown, the specific process of the payment function is [Figure 3][Figure 4] In addition, the asset exchange function is based on the institutional collaboration function. [Figure 5][Figure 6] , tax processing function [Figure 7][Figure 8] Furthermore, the link with the Kaspa network is shown in detail. [Figure 9] and multi-asset compatible flow [Figure 10]. The overall flow diagram in which this invention functions as an integrated platform is as follows: [Figure 11] It is stated in [Figure 12] The overall structure and flow are shown below. [Figure 13] shows the flow of user operations. [Figure 14] The comparison between the blockchain structure and the block DAG structure is shown in [Figure 15] It is explained in.

[0024] In this invention, the API integration function with systems or institutions that provide settlement functions and asset exchange functions, and tax processing functions are integrated. Note that "systems or institutions that provide asset exchange functions" refers to technological systems or entities that provide the exchange, trading, and holding of crypto assets, legal tender, securities, and other assets, including crypto asset exchanges, securities companies, banks, and decentralized exchange systems (smart contracts, etc.).

[0025] Specific embodiments of the present invention are as follows: 1. Payment function: Users use QR codes or cards to make payments in crypto assets or fiat currency. 2. Institutional collaboration that provides asset exchange functions: Using APIs with systems that have multiple asset exchange functions, rates are compared in real time to ensure exchange at the optimal rate. 3. Tax processing: Tax data is generated based on payment history and transaction data and provided to users. 4. System integration: These functions are provided on a single platform, designed to provide users with a consistent experience.

[0026] The present invention has the following components: 1. Payment function: Supports both cryptocurrencies and fiat currencies, and provides a variety of payment methods using QR codes and card payment methods. 2. Institutional collaboration function that provides asset exchange functions: Realizes real-time exchange at the optimal rate through APIs with systems that have multiple asset exchange functions. 3. Tax processing function: Automatically generates tax information based on payment data and provides data for tax reporting. 4. System integration: These functions are integrated on a single platform, providing users with a consistent experience.

[0027] This invention employs the Kaspa network, which uses block DAG technology, as an example of a distributed transaction processing system. The Kaspa network employs the GHOSTDAG protocol, which processes multiple blocks in parallel, achieving high-speed settlement of approximately one second. It also ensures scalability for large volumes of transactions and speeds up confirmation processing with immediate finality. This enables high-speed, low-latency processing in real-time settlement systems and multi-asset exchanges. [Example]

[0028] The payment system of the present invention integrating crypto assets and fiat currency has the following configuration and operation. 1. Example of payment function: A user uses a payment terminal, smartphone app, etc. to enter payment information via a QR code or card payment method. The payment data includes crypto assets (e.g., BTC, ETH, KAS) and fiat currency (e.g., yen, dollar). The payment system connects with an API of a system with asset exchange functionality to obtain the optimal exchange rate between crypto assets and fiat currency in real time and executes the immediate exchange process. 2. Example of function of linking with institutions that provide asset exchange functionality: The payment system uses APIs of multiple systems with asset exchange functionality to select the optimal exchange rate based on a rate comparison algorithm. The system automatically compares the rates of Institution A, Institution B, and Institution C, which provide asset exchange functionality, and executes the exchange at the most favorable rate.

[0029] API integration with systems that have asset exchange functions must meet the following technical requirements: 1. Real-time performance: The design is optimized for when the data update interval of the institutions that provide the asset exchange function is one second or less. 2. Data format compatibility: Uses standard JSON or XML formats, enabling data integration between institutions that offer different asset exchange functions. 3. Security: Uses API authentication (e.g., OAuth2.0) and encrypted communication protocols (e.g., TLS / SSL) to prevent unauthorized access and data tampering. 4. Error handling: An automatic retry function is provided in the event of data reception errors or connection failures, ensuring stable operation.

[0030] 3. Example of tax processing function: The payment system records transaction history and automatically generates data for tax reporting. Example: Data including transaction details, settlement date and time, exchange rate, type of cryptocurrency and legal tender, and tax calculation is automatically generated and provided to users. 4. Example of use of block DAG technology: Transactions in institutional functions that provide payment and asset exchange functions can be processed in real time by using block DAG technology (e.g., Kaspa network), which can be processed quickly and at low cost.

[0031] The payment system of the present invention supports both a method in which users pre-charge their payment balance and a method in which payments are debited in real time. Specifically, the system includes a flow in which users charge their balance within the application and complete payments using their charged balance, as well as a flow in which payment amounts are debited in real time from linked bank accounts or cryptocurrency wallets. This allows users to flexibly select payment methods.

[0032] In addition, with the top-up system, users can convert their crypto assets into fiat currency via an API with a system that has an asset exchange function and hold it as a balance. This system is not limited to this, and a similar function is also available with the real-time withdrawal system. [Industrial Applicability]

[0033] This invention can be widely used in the financial and payment industries, cryptocurrency trading markets, e-commerce (EC) industries, and tax processing industries. 1. Financial and cashless payment fields: Providing seamless payments that integrate cryptocurrencies and legal tender, promoting cashless transactions in stores and online shopping. 2. Cryptocurrency trading markets: Linking with APIs in systems with multiple asset exchange functions enables real-time exchange at optimal rates, providing an efficient and advantageous trading environment for users and businesses. 3. Tax and accounting fields: Automatically generating tax information based on payment and transaction data is expected to improve the efficiency of tax processing and reduce errors.

[0034] 4. International expansion and the Web3 market: Utilizing block DAG technology and a multi-asset compatible platform, it is expected to be used as a Web3 settlement infrastructure in the global market. 5. Convenience and efficiency: Users will be able to centrally use "settlement," "institutional collaboration that provides asset exchange functions," and "tax processing" within a single system, simplifying operations and reducing costs.

Claims

1. A payment system that integrates and manages crypto assets, fiat currency, and Web3 assets (NFTs, tokens, Seoul Bound Tokens (SBT), and new digital assets that will appear in the future), processes transactions using a pre-charge or real-time debit method based on the payment method selected by the user, and has the function of applying a dynamic asset exchange rate optimization algorithm to obtain the optimal exchange rate in real time by connecting via API or directly to platforms, services, financial institutions, or peer-to-peer (P2P) networks that have multiple asset exchange functions, and automatically performs tax processing functions and related data generation functions based on transaction data, and accurately and appropriately calculates and records tax amounts for each transaction.This payment system is characterized by being a single payment system in which payment functions, asset exchange functions, and tax processing functions are mutually integrated, and has the following advanced functions and optimized processes: wallet management function: NFTs, Web3 assets, tokens, digital assets, and fiat currency can be charged to a single wallet, and the charged balance can be checked in real time. It enables seamless use at retail stores, online stores, and Web3 marketplaces, and automatically converts loaded assets into points, crypto assets, and fiat currency. Identity verification and security features: It features a multi-layered identity verification process using driver's licenses, health insurance cards, and My Number cards. It complies with KYC / AML and supports My Number integration for regulatory compliance. Payment processing: Users launch the payment interface via the app, web browser, or API integration and select "Payment" from the home screen to begin operations. Multiple payment methods are available, including QR codes, NFC, prepaid cards, debit cards, credit cards, PoS terminals, biometric authentication (fingerprint, face, iris), decentralized ID (DID), and zero-knowledge proofs (ZKP). It is interoperable with existing QR code payment services, selecting the optimal asset exchange rate for the user's payment and conducting real-time exchanges between Web3 assets, NFTs, crypto assets, and fiat currency.Real-time transaction management: The interface displays transaction amounts, selected assets, and exchange rates, verifies user wallet on-chain and off-chain balances in real time, and instantly executes required asset exchanges. When the user selects "Pay," the payment is completed and a notification that "Payment has been completed" is immediately displayed to the user. Transaction history and tax data can be viewed via the app, web, or API. Tax processing function: Receives user payment data and generates a unique transaction ID. It has an initial data processing function that analyzes QR codes, payment amounts, and customer information. It connects directly or via API with multiple asset exchange platforms, services, financial institutions, and P2P networks. It connects with distributed ledger technology (DLT) using Blockchain DAG technology, other DLT technologies, and off-chain payment systems to obtain real-time exchange rates, select the optimal rate, and execute a multi-layered verification process that includes user authentication, wallet balance confirmation, and KYC verification. It generates a payment request based on transaction details, executes the required asset exchange, and converts crypto assets into fiat currency according to user-specified conditions. It automatically generates tax data based on transaction data through internal processing or external APIs, applies international tax compliance logic to calculate the correct tax amount for each transaction, and securely records transaction data after payment is completed. It automatically calculates and reflects user reward points and cashback in the wallet. Security and scalability: High levels of security are ensured by using strong encrypted communication protocols such as OAuth 2.0 and TLS / SSL, and combining multi-factor authentication (biometric authentication, SMS code authentication, dedicated app authentication, decentralized ID (DID), and zero-knowledge proof (ZKP)). It supports payments in Web3 marketplaces and decentralized applications (DApps), and can seamlessly integrate with NFT marketplaces and DeFi protocols. It provides an interface that is interoperable with existing machine-readable code payment services, and is scalable to accommodate future CBDCs (central bank digital currencies), stablecoins, and other new currency formats. It is a payment system characterized by its flexible integration with distributed ledger technology (DLT) and other emerging technologies.

2. 2. The integrated system of claim 1, wherein a user inputs payment data using one of QR codes, NFC, prepaid cards, debit cards, credit cards, PoS terminals, biometric authentication (fingerprint authentication, face authentication, iris authentication), decentralized ID (DID), zero-knowledge proofs (ZKP), and electronic money payment, and transactions are processed in real time based on the selected payment method.

3. A payment system related to the payment system described in claim 1, characterized in that it dynamically connects via API or directly to platforms, services, financial institutions, or peer-to-peer (P2P) networks that have multiple asset exchange functions, compares rates between each system in real time, automatically selects the optimal exchange rate, and executes the exchange of crypto assets and legal tender, utilizing real-time data acquisition, authenticated API connections, direct connections, and encrypted communication protocols to ensure safety and speed, and centrally manages the entire exchange process, thereby improving the efficiency and reliability of transactions.

4. A payment system as described in claim 1, characterized in that it is equipped with a tax processing function that applies logic that is compatible with international tax systems based on the user's location and transaction content, automatically generates tax data, and provides documents or data for tax reporting through an internal system or an external API, thereby realizing appropriate tax calculation and recording for each transaction and improving tax compliance in international transactions.

5. A payment system as described in claim 1, characterized in that it utilizes the real-time transaction processing capabilities of the Kaspa network to achieve instant confirmation and high scalability, thereby optimizing performance when processing large volumes of transactions, has security functions that are resistant to 51% attacks, provides a high-speed and secure payment environment, and improves the reliability of cryptocurrency transactions.

6. A payment system in the integrated system described in claim 1, characterized in that it has a multi-asset compatibility function that handles NFTs, tokens, stablecoins, crypto assets and legal tender in an integrated manner, executes mutual exchanges between different assets in real time based on rate conditions and exchange priorities set by the user, immediately displays transaction results visually on the user interface of the integrated system, and automatically converts assets selected by the user into any form (instant conversion to legal tender, crypto assets, digital assets, NFTs, tokens, stablecoins).

7. A payment system relating to claim 1, comprising an integrated platform that integrates payment functions, asset exchange functions and tax processing functions, providing these functions to users on a single platform, and characterized in that instantaneous and non-instantaneous payment processing, asset exchange processing and tax data generation are interconnected through API integration, system integration, data integration, automatic integration with smart contracts and distributed systems, or other integration methods.

8. The payment system of claim 7, characterized in that it has the function of processing transactions as multiple installment transfers for high-value and low-value transactions, or the function of performing automatic scheduling and conditional transfers (including conditions on transaction amount, exchange rate, and transaction time period) based on a schedule specified by the user.

9. The payment system described in claim 7 is characterized by having a function that enables real-time conversion and transfer between crypto assets and multiple legal currencies, thereby realizing the efficiency of international transactions.

10. The settlement system described in claim 7 is characterized in that when transferring funds between corporations, it is equipped with a hedging function that monitors exchange rate fluctuations in real time through an API with a system having an asset exchange function and reduces exchange rate risk.

11. The settlement system according to claim 7 has a function of automatically recording transaction history relating to inter-company remittances and generating reports for regulatory compliance and audit compliance.

12. The payment system described in claim 7 is characterized by having a function that enables safe and fast remittance of high-value and low-value transactions between corporations, and mitigation of exchange risk through API connection, integrated connection or automatic collaboration with systems or institutions that provide asset exchange functions.

13. The system described in claim 3 prevents unauthorized access and transaction tampering by combining an authentication protocol (OAuth 2.0, TLS / SSL) with transaction signatures and multi-factor authentication, and the multi-factor authentication includes biometric authentication (fingerprint or face authentication), SMS code authentication, or approval via a dedicated app.

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