A new California law took effect over the weekend, aimed at enforcing AI transparency. The California AI Transparency Act requires companies to embed data into AI-generated digital content. Eddan Katz is the head of Public Policy and Affairs at Encypher, which verifies AI content. California is the first US State to regulate AI content this way. A second phase of the AI Act will take effect in January, requiring social media platforms to also embed AI markers into their content.