# Open Banking Payin (EUR / GBP → USDC)

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This section provides a reference for integrating Tylt CrossRamp’s Open Banking **on-ramp flow** within merchant applications.

Through this integration, end users can initiate account-to-account transfers via Open Banking, which are used to facilitate the acquisition of stablecoins. The resulting USDC is transferred to the merchant’s Tylt wallet.

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#### Conversion & Settlement Model

1. Each transaction is processed using a **real-time conversion quote**.
2. At the time of initiation, a EUR / GBP → USDC quote is generated. The end user reviews and accepts the quote, following which the transaction is initiated to acquire the corresponding crypto-assets and transfer them to the merchant, based on the provided transaction details.
3. The end user is then prompted to complete a fiat payment via Open Banking through
4. Upon successful completion of the fiat leg, the corresponding crypto-asset conversion is executed, and the resulting USDC is credited to the merchant’s Tylt wallet.
5. Settlement is finalised through a daily reconciliation cycle, ensuring that all transactions are fully reflected in the merchant’s balance no later than **2:30 AM UTC**.

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#### Settlement Summary

| Attribute               | Description                                                 |
| ----------------------- | ----------------------------------------------------------- |
| **Quote Model**         | Real-time quote per transaction                             |
| **Credit Timing**       | USDC credited upon successful completion of the transaction |
| **Settlement Finality** | Fully reconciled no later than 2:30 AM UTC daily            |
| **Settlement Currency** | USDC                                                        |
| **Destination**         | Merchant Tylt Wallet                                        |

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#### What You’ll Find in the API Reference

**1. Open Banking On-Ramp Flow**\
Guidance for enabling end users to initiate EUR / GBP bank transfers and complete on-ramp transactions, including tracking transaction lifecycle and status.

**2. Endpoint Descriptions**\
Detailed specifications for all API endpoints, including parameters, authentication requirements, and sample requests.

**3. Request & Response Formats**\
Structured JSON examples, parameter definitions, and HTTP status codes for accurate implementation.

**4. Code Examples**\
Reference implementations in Node.js, Python, and other supported languages.

**5. Error Handling**\
Common error scenarios, causes, and recommended handling strategies to ensure reliable integration.

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### Summary

This API enables merchants to embed Open Banking-based on-ramp functionality, allowing end users to acquire stablecoins via local bank transfers, with settlement managed in USDC through Tylt’s crypto-asset infrastructure.


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