The United States is rare. Most countries (seemingly including Romania[1]) have adopted either a cadastral/Torrens title system in which the land registry is definitive legal evidence of who owns a particular piece of land. If you purchased a piece of land and that wasn't recorded in the registry, you are SOL because registration is what conveys title.
The United States on the other hand has a massive title insurance industry, which wouldn't exist if this system was implemented. So you can make random handshake agreements all you'd like and sue over it.
[1] https://www.elra.eu/the-principles-underlying-the-land-regis...