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Typical Buy Flow

Overview​

This document describes the standard cryptocurrency purchase flow using Binance Connect's on-ramp service. The sequence diagram below illustrates the interaction between partner systems and Binance Connect APIs throughout the purchase process.

Flow Steps​

1. Initialize​

  • Partner frontend renders the buy interface for users
  • Backend provides necessary configuration and settings (when applicable)

2. Query Options​

  • Fetch supported blockchain networks for crypto delivery
  • Retrieve available trading pairs
  • Get supported payment methods
  • Return data to the frontend
    • You can be done in parallel. Depending on your UI/UX design, you may choose to call these APIs in different sequences.

3. Get Quote​

  • Request real-time price quote for the selected trading pair, payment method and amount
  • Display quote information to the user

4. Create PreOrder​

  • Submit pre-order request to Binance Connect with user's selection
  • Receive a redirect URL for payment processing

5. Payment​

  • Redirect user to Binance
  • User completes the purchase using their preferred payment method
  • Binance processes the transaction

6. Confirmation​

  • Receive webhook notifications for order status updates
  • Query order details to confirm final transaction status
  • Update user interface with purchase results and crypto delivery details

buy-flow.png