How to handle USDT transaction confirmations

USDT transaction confirmations are an essential part of ensuring that cryptocurrency payments have been successfully processed. This guide will walk you through the process of handling these confirmations in your application.

Understanding Confirmations

When a USDT transaction is initiated, it goes through several confirmations on the blockchain before it's considered fully settled. The number of confirmations required depends on the network being used:

• Ethereum (ERC-20): Typically 12-30 confirmations (3-8 minutes)
• Tron (TRC-20): Typically 19 confirmations (1-2 minutes)
• Binance Smart Chain (BEP-20): Typically 15 confirmations (45 seconds)
• Solana: Typically 32 confirmations (15-20 seconds)

Implementation Steps

To properly handle USDT transaction confirmations in your application, follow these steps:

1. Set up webhook notifications

   Register a webhook endpoint in your CryptoMMO dashboard to receive real-time updates about transaction status changes.

   POST /api/transactions/webhook
   Content-Type: application/json
   {
     "transaction_id": "tx_123456789",
     "status": "confirmed",
     "confirmations": 15,
     "network": "bsc",
     "timestamp": "2024-06-15T10:30:45Z"
   }
             

2. Implement confirmation tracking

   Monitor the number of confirmations and update your database accordingly.

   // Example code for handling webhook events
   app.post('/api/webhook', async (req, res) => {
     const { transaction_id, status, confirmations } = req.body;
     
     // Update transaction in your database
     await db.transactions.update({
       where: { external_id: transaction_id },
       data: { 
         status,
         confirmations,
         confirmed: status === 'confirmed' 
       }
     });
     
     // If sufficient confirmations, trigger your business logic
     if (status === 'confirmed') {
       await processConfirmedPayment(transaction_id);
     }
     
     res.status(200).json({ received: true });
   });
             

3. Update user interface

   Show the confirmation progress to users in your application.

Handling Failed Transactions

Sometimes transactions may fail to receive sufficient confirmations. In these cases:

• Set up a timeout period (e.g., 24 hours)
• Implement a background job to check for stuck transactions
• Provide clear communication to users about transaction status