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Listening for ada payments

Introduction​

Listening for payments is a fundamental requirement for many Cardano applications. Whether you're building an e-commerce platform, payment gateway, donation system, or any service accepting ada, you need a reliable way to detect when payments arrive at specific addresses.

Use Cases​

Common scenarios where payment detection is essential:

  • E-commerce & Online Shops - Confirm customer payments before fulfilling orders
  • Payment Gateways - Process ada transactions for merchants
  • Donation Platforms - Track and acknowledge contributions
  • Subscription Services - Verify recurring payments
  • Vending Machines & IoT - Automated payment confirmation
  • Event Ticketing - Confirm ticket purchases
  • Gaming & In-App Purchases - Validate in-game transactions

How It Works​

The basic payment detection flow:

  1. Generate payment address - Create or retrieve a unique address for the transaction
  2. Display to customer - Show address (often as QR code) for payment
  3. Monitor blockchain - Periodically check the address for incoming transactions
  4. Verify amount - Confirm received amount matches expected payment
  5. Complete transaction - Fulfill order/service once payment is confirmed

Payment Flow