Article 1306.1. Use of legally published phonograms and performances whose right holder is presumed to be unknown
1. If the manufacturer of the phonogram or other holder of the exclusive right to a phonogram or the perpetrator or other holder of the exclusive right to perform is presumed to be unknown (para. 1). 1 of article 1280.1 of the present Code, in accordance with the procedure laid down in article 1244.2 of this Code 2. Where the exclusive right to a phonogram or performance belongs to more than one person or such phonogram or performance includes other protected objects of copyright and related articles The use of such an object of related rights is not known to all rights holders (art. 1244.2, para. 1), in accordance with article 1280.1, para. 2, of the present Code.