VISA Network Integration

GuCard’s integration with VISA unlocks global acceptance while ensuring high transaction reliability and security. By inheriting VISA’s robust infrastructure, GuCard combines blockchain capabilities with traditional financial rails. Below is a technical breakdown of how this works.

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1. How VISA Network Integration Works

1.1 Payment Routing Mechanism

When a transaction is initiated using GuCard, the payment request flows through the VISA global payment network, which:

• Authenticates the card details through tokenization.

• Validates the transaction with VISA’s fraud prevention systems.

• Routes the request to the issuing bank (or Gumart liquidity provider in crypto-based payments).

Technical Flow:

• User swipes GuCard or enters card details at the POS/e-commerce terminal.

• Merchant submits the request to the VISA network.

• VISA processes and routes the transaction request:

  • Fiat Transactions: The user’s fiat account (loaded on GuCard) is charged directly.

  • Crypto Transactions: If the user pays in crypto, the conversion flow is triggered (see 3.3).

• Approval is sent back to the merchant, completing the transaction.

1.2. VISA Tokenization Technology

Every transaction initiated via GuCard uses VISA’s Tokenization Service (VTS):

• Replaces sensitive card details (e.g., card number, CVV) with encrypted tokenized identifiers.

• Reduces risk of card information leaks during transactions.

• Why It Matters: Enhances payment security without compromising transaction speed.

How Tokenization Works:

1. User card data → Encrypted into a secure token.

2. Token sent to the merchant → No sensitive data is exposed.

3. VISA network validates the token and approves the transaction.

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1.3. VISA Multi-Currency Conversion

GuCard utilizes VISA’s Multi-Currency Conversion System (MCCS) to enable real-time payments in 200+ local currencies.

Key Capabilities:

• Automatic Currency Matching: If a user pays in BTC, GuCard instantly converts it to the merchant’s preferred fiat currency (e.g., USD, EUR).

• Dynamic Exchange Rates: VISA fetches real-time exchange rates from its global pricing network.

• Zero Conversion Delays: Crypto-to-fiat transactions are processed in under 1 second.

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2. Security and Compliance

By leveraging VISA’s infrastructure, GuCard ensures all transactions comply with:

• PCI DSS Compliance: GuCard inherits VISA’s Payment Card Industry Data Security Standards, ensuring robust security across card networks.

• AML/KYC Protocols: All GuCard users pass KYC verification to comply with anti-money laundering regulations.