California Code, Business and Professions Code - BPC § 19664

It is unlawful for any person, for the purpose of selling or offering to sell predictions on horse races, to advertise that he has predicted the outcome of any horse race which has been run in this state, unless such person has notified in writing the California Horse Racing Board, at any of its offices, of his predictions at least three hours prior to the race involved on forms prescribed by the board. No person shall advertise the fact that he has notified the board or use the name of the board in any way whatsoever to promote the activities described in this section.

For the purposes of this section the term “advertise” includes the use of a newspaper, magazine or other publication, book notice, circular, pamphlet, letter, handbill, tip sheet, poster, bill, sign, placard, card, label, tag, window display, store sign, radio or television announcement, or any other means or methods now or hereafter employed to bring to the attention of the public information concerning the outcome of horse races.

Nothing herein contained shall apply to any daily newspaper of general circulation which is regularly entered in the United States mail, or any other daily publication carrying complete past performances of horses entered in races, or to any regularly published magazine or periodical devoted to racing news, which magazine or periodical has been published for at least two years.

Violation of this section is a misdemeanor.