Act to which the law grants a particular value in that it makes proof, against all persons, of the juridical act that it records and of the declarations of the parties directly related thereto. It may consist of, without limitation, the act received by a notary in accordance with the formalities provided for by law. Certains acts, to be valid, must be drawn up in an authentic act received before a notary. This is the case for the declaration of co-ownership.