TLaaS (LEX) — Payment Gateways & Fee Logic: Handling Crypto and Fiat Payments

1. Purpose

The payment gateway and fee logic in TLaaS (LEX) manage the secure collection, processing, and distribution of payments for license issuance, renewal, and transactions. This framework supports both cryptocurrency and fiat options, enabling flexibility for global participants while integrating with TLAAS (DLA) for validation and DAL for governance oversight.

2. Supported Payment Methods

• Cryptocurrency: ETH, stablecoins (USDC, USDT, DAI), and governance tokens (LEXU/DLAU).
• Fiat Payments: Processed via integrated payment processors with blockchain settlement gateways.
• Hybrid Payments: Partial crypto, partial fiat settlement for jurisdictional compliance.

3. Fee Logic Structure

• Minting Fees: Applied when a new license is issued.
• Renewal Fees: Charged upon license extension.
• Transaction Fees: Collected on transfers, sublicenses, and marketplace trades.
• Penalty Fees: From slashing events or compliance violations.

4. On-Chain Payment Processing

Core Steps:

1. User initiates a payment transaction.
2. Smart contract validates payment amount and method.
3. Funds routed to royalty distribution engine.
4. Transaction recorded in compliance & audit logs.

Example Solidity Payment Check:

function processPayment(uint256 amount, address token) internal {
    require(IERC20(token).transferFrom(msg.sender, address(this), amount), "Payment failed");
    emit PaymentProcessed(msg.sender, amount, token);
}

5. Fiat Payment Integration Flow

1. User selects fiat option in the marketplace interface.
2. Payment processor handles card/bank transaction.
3. Settlement recorded on-chain via an oracle bridge.
4. License issuance or renewal triggered upon confirmation.

6. Security & Compliance

• AML/KYC Checks: Mandatory for high-value transactions.
• Payment Confirmation Oracles: Validate off-chain fiat settlements.
• Multi-Sig Treasury Controls: Secures large withdrawals.
• Refund Protocols: Defined rules for refunds and chargebacks.

7. Interoperability

• TLaaS (LEX): Manages payment initiation and fee logic.
• TLAAS (DLA): Verifies payment compliance before license activation.
• DAL: Oversees disputes involving payment issues or chargebacks.

8. Benefits

• Supports global participation through flexible payment options.
• Ensures compliance with financial regulations.
• Automates revenue routing to stakeholders.
• Enhances user trust via transparent payment processing.

Next Article: License Marketplace DApp — Design of Escrow and Trading Interface