Vahan 4 ✅

: API key + digital signature (RSA) for high‑value transactions; OAuth2 for read‑only.

Vahan is the national vehicle registration database managed by the Ministry of Road Transport & Highways (MoRTH) , under NIC (National Informatics Centre) . Vahan 4.0 is the modernized, real-time, centralized version that replaced the older state‑wise, siloed systems. vahan 4

"chassis": "ABC123...", "engine": "XYZ789...", "owner_aadhaar": "xxxx", "insurance_policy": "POL123", "dealer_code": "DL09D001", "tax_payment_ref": "BHARATKOSH_REF" : API key + digital signature (RSA) for

POST /vahan4/api/vehicle/register Headers: X-API-Key, X-Signature Body: siloed systems. "chassis": "ABC123..."

(conceptual):