Business and Professions Code section 22757.3.1
(a)
A large online platform shall do all of the following:(1)
Detect whether any provenance data that is compliant with widely adopted specifications adopted by an established standards-setting body is embedded into or attached to content distributed on the large online platform.(2)
(A)Provide a user interface to disclose the availability of system provenance data that reliably indicates that the content was generated or substantially altered by a GenAI system or captured by a capture device.(B)
The user interface required by this paragraph shall make clearly and conspicuously available to users information sufficient to identify the content’s authenticity, origin, or history of modification, including, but not limited to, all of the following:(i)
Whether provenance data is available.(ii)
The name of the GenAI system or capture device that created or substantially altered the content, if applicable.(3)
Allow a user to inspect all available system provenance data that is compliant with widely adopted specifications adopted by an established standards-setting body in an easily accessible manner by any of the following means:(A)
Directly through the large online platform’s user interface pursuant to paragraph (2).(B)
Allow the user to download a version of the content with its attached system provenance data.(C)
Provide a link to the content’s system provenance data displayed on an internet website or in another application provided either by the large online platform or a third party.(b)
A large online platform shall not, to the extent technically feasible, knowingly strip any system provenance data or digital signature that is compliant with widely adopted specifications adopted by an established standards-setting body from content uploaded or distributed on the large online platform.(c)
This section shall become operative on January 1, 2027.
Source:
Section 22757.3.1, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=BPC§ionNum=22757.3.1. (updated Jan. 1, 2026; accessed Dec. 22, 2025).
