California's AI Transparency Act (SB 942) goes operative, deliberately timed to the EU AI Act
SB 942, as amended by AB 853, became operative on 2 August 2026 for 'covered providers' — generative AI systems with over one million California monthly users. From now those providers must offer a free public AI-content detection tool, let users add a visible AI disclosure to generated content, and embed a hidden machine-readable provenance watermark in AI-generated images, video and audio; the same disclosure duty extends to hosting platforms from 1 January 2027 and capture-device makers from 1 January 2028. Commentary is explicit that the operative date was moved to align with the EU AI Act's own 2 August enforcement start, so any provenance/watermarking build already done for Article 50 largely transfers — but the triggers differ (California is a one-million-user threshold, not an EU-market test), so scope has to be checked separately rather than assumed to mirror Article 50's coverage.
Source: California SB 942 / AB 853 (Nat'l Law Review, Vorp Labs coverage)
Commission formally starts AI Act enforcement as Article 50 transparency rules go live
The Commission's own press corner confirmed on 2 August that the AI Office, together with national authorities, has now begun enforcing the AI Act, with Article 50 transparency obligations applying from the same date: chatbots and other interactive systems must disclose they are AI, deepfakes must be labelled, and AI-generated or altered content must carry machine-readable marks. This is the formal 'switch is now on' statement to cite over the bare statutory date — useful alongside the 31 July AI Office staffing/whistleblower-tool item already tracked, since that covered the machinery being readied and this confirms it is now live. High-risk Annex III obligations are unaffected and remain deferred to 2 December 2027 under the Digital Omnibus.
Unsure which of these developments applies to your AI systems?
Begin in writing →This briefing is general information, not legal advice, and does not create an advisor–client relationship. Summaries are original; follow source links for the full record. Adesanya AI Advisory — Abdulwahab B. Adesanya, Barrister-at-Law (Nigeria).