I guess your concern is solved with the below link,
| V A H A N | National Register e-Services |
It's a govt initiative to bring all the data of RTO of all the states in India under this website. You need to have the registration and Chassis numbers to find the details of the vehicle.
Existing Owner, Previous owner(s) and all other details of a genuine registration can be found here. Helpful if you are buying a used vehicle.
Hope this helps.