(1) If a name purporting to be the name of a performer appears on a record embodying a performance so as to indicate that the person was a performer in the performance, then, in an action brought under this Part, the person whose name so appeared is, if it was his or her true name or a name by which he or she was commonly known, presumed, unless the contrary is established, to be a performer in the performance.
(2) If a name purporting to be the name of a group of performers appears on a record embodying a performance so as to indicate that the group performed in the performance, then, in an action brought under this Part, the group whose name so appeared is, if it was a name by which the group was commonly known, presumed, unless the contrary is established, to have performed in the performance.