curl "https://api.unipay.com/v1/transactions?limit=10&status=completed" \
  -H "Authorization: Bearer YOUR_API_KEY"

const history = await fetch(
  'https://api.unipay.com/v1/transactions?limit=10',
  { headers: { 'Authorization': 'Bearer YOUR_API_KEY' } }
);

{
  "transactions": [
    {
      "transactionId": "tx_123",
      "status": "completed",
      "createdAt": "2026-04-22T12:00:00Z"
    }
  ],
  "total": 45,
  "hasMore": true
}