This bill creates new state law by adding new chapters to Titles 19 and 42 RCW that require certain large providers of generative AI to attach provenance data to images, video, or audio their systems create or materially alter. A "covered provider" is a non‑governmental provider whose generative AI system has over 1,000,000 monthly users in Washington. Provenance data must let a user assess whether the content was created or materially altered by the provider’s generative AI, must be made difficult to remove or tamper with using commercially and technically reasonable methods, and may follow commonly supported technical standards. The bill excludes minor edits (for example, brightness, contrast, resizing, filters, format conversions, denoising, or basic audio noise removal), excludes business‑to‑business uses and certain systems (video games, interactive experiences, and systems used solely for upscaling, noise reduction, or compression), and does not require disclosure of trade secrets or proprietary system design details. Any waiver of the law’s provisions is void. The change is a regulatory and procedural requirement rather than a new criminal offense; enforcement is civil and vested in the Washington Attorney General, who may sue in the name of the state or as parens patriae and treats violations as unfair or deceptive acts under the state consumer protection act (chapter 19.86 RCW); only the Attorney General may bring such an action under this section. Separately, government agencies that make AI systems available to interact with consumers must disclose, before or at the time of interaction, that the user is interacting with an AI system; that disclosure must be clear, conspicuous, written in plain language, may not use a dark pattern, and may be provided by hyperlink. The act takes effect February 1, 2027. The extracted text does not provide the exact RCW chapter numbers assigned to the new chapters, and it does not define key terms used as standards here, including "commercially and technically reasonable," "dark pattern," or "consumer," so the precise legal scopes of those standards are unclear from the provided material.

If enacted, the law will require large, consumer-facing generative AI companies (those with more than 1,000,000 monthly users in Washington) to attach verifiable provenance information to images, video, or audio their systems create or significantly alter and to make that provenance hard to remove. That will likely force these companies to spend on engineering, product changes, and compliance processes, and it creates a clear enforcement risk because only the Washington Attorney General can sue over violations; businesses that sell mainly to other businesses, game-only or certain enhancement tools, and government entities are generally excluded. Key practical uncertainties remain that affect how costly or disruptive this will be: the rule uses the undefined standard "commercially and technically reasonable" for what provenance must include and how tamper-resistant it must be, "dark pattern" is not defined for government disclosures, and "consumer" is not specified. The law takes effect February 1, 2027, so affected companies have time to plan, but the lack of precise technical definitions means companies will need to make judgment calls or seek guidance before implementation.