Paid car loan but name not on registration documents

I took out a loan on a car with my then wife. The loan was in my name; I then purchased the car, proof of which can be obtained. I have paid the payments ever since. My wife name was put on the registration documents because at the time I had a company vehicle; at the time the insurance was taken out with me as the main user and my wife as a named driver. I lost my license last feb and was taken off the insurance. I have now split from my wife, who does the car belong to?