California SB 942
The leading US content-provenance mandate — aligned in spirit with the EU's marking obligations that also bit in August 2026, pushing C2PA-style provenance from voluntary standard toward legal requirement across two major markets simultaneously.
What it is
Requires large GenAI providers (over 1M monthly users) to offer free AI-detection tools and embed latent provenance disclosures in AI-generated content; AB 853 (2025) delayed operation to August 2026 and extended duties to large platforms and capture devices.
Who is affected
The leading US content-provenance mandate — aligned in spirit with the EU's marking obligations that also bit in August 2026, pushing C2PA-style provenance from voluntary standard toward legal requirement across two major markets simultaneously.
Key obligations
- Free public AI-detection tool for covered providers
- Latent (machine-readable) provenance data in AI-generated content
- Platforms must surface provenance data; capture devices embed authenticity data
Recent signals
California closes its session having sent a slate of AI bills to the Governor
The 2026 session ended on 31 August with sixteen AI bills passed, including SB 813 on independent safety verification. The Governor has until 30 September to sign or veto.
Colorado AI Act takes effect after delayed start
The first comprehensive US state AI law is now operative — as DOJ's AI Litigation Task Force weighs challenges under the December 2025 preemption executive order.
New York RAISE Act frontier-safety duties begin
New York joins California in requiring large frontier developers to publish safety protocols and report incidents.
US state AI law wave: Texas, California and Illinois statutes take effect
TRAIGA, SB 53 (frontier transparency), AB 2013 (training-data disclosure) and Illinois HB 3773 all become operative on the same day — the broadest single expansion of binding US AI law.
Related instruments
- US-STColorado AI ActThe first comprehensive US state AI law: developers and deployers of 'high-risk' AI systems in consequential decisions (employment…
- US-STTexas TRAIGATexas's AI law (effective 1 Jan 2026) takes an intent-based approach: it prohibits developing or deploying AI to unlawfully discri…
- US-STCalifornia SB 53The first US law regulating frontier AI developers specifically: large developers must publish frontier AI frameworks, report cata…
- US-STCalifornia AB 2013Requires developers of generative AI systems made available in California to publish documentation of training datasets — sources,…
- US-STIllinois HB 3773Amends the Illinois Human Rights Act to prohibit employers from using AI that discriminates in recruitment, hiring, promotion or d…