How to purchase and receive the service

1. Choose the service. The customer opens the HematAPI Grok 10M catalog and selects Buy.
2. Create account. The customer registers or signs in with an email and password.
3. Choose a payment method. The customer chooses QRIS or USDT on BSC.
4. Pay the invoice. For QRIS, the system displays a dynamic QR code with the exact amount and expiry. For USDT, it displays the address, network, and exact amount.
5. Server-to-server verification. The system never relies on screenshots or browser redirects. QRIS payments are verified through provider notifications and status checks. USDT payments are verified by token contract, recipient, amount, transaction status, and block confirmations.
6. Automatic fulfillment. After payment is verified, the system idempotently creates one API key for that order.
7. Access delivery. The API key appears in the customer dashboard and can be used immediately with the OpenAI-compatible endpoint.
8. Metered usage. The dashboard shows the allowance, tokens used, remaining tokens, validity period, and API key status.