BPC §26151: (a) (1) All advertisements and marketing shall accurately and legibly identify the licensee responsible for its content, by adding, at a minimum, the licensee’s license number.

(a) (1) All advertisements and marketing shall accurately and legibly identify the licensee responsible for its content, by adding, at a minimum, the licensee’s license number. (2) A technology platform shall not display an advertisement by a licensee on an Internet Web page unless the advertisement displays the license number of the licensee. (3) An outdoor advertising company subject to the Outdoor Advertising Act (Chapter 2 (commencing with Section 5200) of Division 3) shall not display an advertisement by a licensee unless the advertisement displays the license number of the licensee. (b) Any advertising or marketing placed in broadcast, cable, radio, print, and digital communications shall only be displayed where at least 71.6 percent of the audience is reasonably expected to be 21 years of age or older, as determined by reliable, up-to-date audience composition data. (c) Any advertising or marketing involving direct, individualized communication or dialogue controlled by the licensee shall utilize a method of age affirmation to verify that the recipient is 21 years of age or older before engaging in that communication or dialogue controlled by the licensee. For purposes of this section, that method of age affirmation may include user confirmation, birth date disclosure, or other similar registration method. (d) All advertising shall be truthful and appropriately substantiated.