Registrant Data as a proof?

Hello Experts

Does Website / Domain name Registrant Data (User data  - address, contact details, name, date etc) is a valid proof to proove an Existence of a company ?

For example: www.XYZ.com has following details: (Which is completely false)

Registrant : 
	Email: abc@gmail.com
	Organization: 123
	Address: New York
	City: New York
	State: New York
	Country: USA
	Postal Code: 100034
	Phone: +001.783.833
	Fax: 
	Name: SS
Domain: XYZ.com


Note: NO DOMAIN REGISTRAR ASKED FOR / VERIFY REGISTRANT DETAILS, they just give you login id / password to make changes and order. Anybody who have login details considered to be the owner.


So my question is that how someone can use above registrant data as legal proof?

Pls help

RSH