Article 1881 of the French General Tax Code
The transfer of an immovable property in ownership or usufruct is sufficiently established, for the claim of registration duty and the pursuit of payment against the new possessor, either by the registration of his name on the roll of property tax, and payments made by him according to this roll, or by leases entered into by him, or finally by transactions or other deeds evidencing his ownership or usufruct.