# Fiat On-Ramp Flow (card, bank, local methods)

Ramply's fiat on-ramp infrastructure is powered by Unlimit, providing seamless conversion from traditional fiat currencies to stablecoins with support for multiple payment methods across 120+ countries.

## Unlimit Integration

### Core On-Ramp Services

* **Payment Processing**: Global payment processing infrastructure
* **Multi-Currency Support**: 50+ fiat currencies supported
* **Regional Payment Methods**: Local payment solutions for each market
* **Compliance Integration**: Built-in KYC/AML and regulatory compliance
* **Fraud Prevention**: Advanced fraud detection and prevention systems

### Key Benefits

* **Global Reach**: Coverage across 120+ countries
* **Local Expertise**: Deep understanding of regional payment preferences
* **Regulatory Compliance**: Built-in compliance with local regulations
* **High Success Rates**: Optimized payment flows for maximum conversion

## Payment Methods

### Card Payments

* **Credit Cards**: Visa, Mastercard, American Express
* **Debit Cards**: All major debit card networks
* **3D Secure**: Enhanced security for card transactions
* **Tokenization**: Secure card data storage and processing
* **Real-time Authorization**: Instant payment approval

### Bank Transfers

* **ACH Transfers**: Automated Clearing House for US users
* **SEPA Transfers**: Single Euro Payments Area for European users
* **Wire Transfers**: International wire transfer support
* **Open Banking**: Direct bank account integration
* **Instant Bank Transfers**: Real-time bank-to-bank transfers

### Regional Payment Methods

* **Mobile Money**: M-Pesa, MTN Mobile Money, Airtel Money
* **Digital Wallets**: PayPal, Apple Pay, Google Pay, Samsung Pay
* **E-wallets**: Regional e-wallet solutions
* **Banking Apps**: Direct integration with local banking apps
* **Cryptocurrency**: Direct crypto-to-stablecoin conversion

## On-Ramp Process Flow

### Step 1: Payment Initiation

1. **User Selection**: User selects payment method and amount
2. **Rate Calculation**: Real-time exchange rate calculation
3. **Fee Display**: Transparent fee structure presentation
4. **Payment Gateway**: Redirect to Unlimit payment gateway

### Step 2: Payment Processing

1. **Authentication**: User authentication and verification
2. **Payment Authorization**: Payment method authorization
3. **Fraud Check**: Real-time fraud detection and prevention
4. **Compliance Verification**: KYC/AML compliance check

### Step 3: Stablecoin Conversion

1. **Fiat Receipt**: Fiat currency received by Unlimit
2. **Stablecoin Minting**: USDC minting through Circle API
3. **Blockchain Transfer**: Stablecoin transfer to user's wallet
4. **Confirmation**: Transaction confirmation and notification

## Technical Implementation

### API Integration

* **RESTful APIs**: Standard REST API for payment processing
* **Webhook Support**: Real-time payment status updates
* **SDK Integration**: Easy integration with mobile and web apps
* **Documentation**: Comprehensive API documentation and examples

### Security Measures

* **End-to-End Encryption**: All payment data encrypted in transit
* **PCI DSS Compliance**: Payment card industry security standards
* **Tokenization**: Sensitive data replaced with secure tokens
* **Fraud Detection**: Machine learning-based fraud prevention

### Error Handling

* **Retry Mechanisms**: Automatic retry for failed transactions
* **Fallback Options**: Alternative payment methods for failed attempts
* **User Notifications**: Real-time status updates and error messages
* **Support Integration**: Seamless escalation to support team

## Regional Adaptations

### North America

* **ACH Integration**: Direct ACH processing for US users
* **Canadian Banking**: Interac e-Transfer support
* **Mexican Payments**: SPEI and OXXO payment support

### Europe

* **SEPA Integration**: Single Euro Payments Area support
* **Open Banking**: PSD2-compliant open banking integration
* **Local Methods**: iDEAL, Sofort, Bancontact support

### Asia-Pacific

* **UPI Integration**: Unified Payments Interface for India
* **Alipay/WeChat Pay**: Chinese payment methods
* **GrabPay**: Southeast Asian payment solution

### Africa

* **Mobile Money**: M-Pesa, MTN Mobile Money integration
* **Bank Transfers**: Local bank transfer methods
* **Cryptocurrency**: Direct crypto on-ramp support

## Performance Optimization

### Speed Optimization

* **Pre-authorization**: Faster payment processing
* **Caching**: Frequently used data cached for speed
* **CDN Integration**: Global content delivery for faster loading
* **Async Processing**: Non-blocking payment processing

### Cost Optimization

* **Dynamic Routing**: Automatic selection of cheapest payment method
* **Batch Processing**: Multiple transactions processed together
* **Fee Optimization**: Real-time fee calculation and optimization
* **Volume Discounts**: Reduced fees for high-volume users


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