POST /vahan4/api/vehicle/register Headers: X-API-Key, X-Signature Body:
(conceptual):
: API key + digital signature (RSA) for high‑value transactions; OAuth2 for read‑only. vahan 4
"chassis": "ABC123...", "engine": "XYZ789...", "owner_aadhaar": "xxxx", "insurance_policy": "POL123", "dealer_code": "DL09D001", "tax_payment_ref": "BHARATKOSH_REF" POST /vahan4/api/vehicle/register Headers: X-API-Key