curl --request GET \
  --url http://localhost:3773/api/payment-status/{sessionId} \
  --header 'Authorization: Bearer <token>'

{
  "sessionId": "Z_1Y3U3waXK2YUKB6llcIwn9XJcviEBhuFL8WUutAQ8",
  "status": "completed",
  "transactionHash": "0x...",
  "timestamp": "2025-10-26T14:47:52.183416+00:00"
}