AI Watermarking

AI watermarking embeds an invisible, machine-detectable signal directly into text, images, audio, or video generated by an AI model, so the content can later be traced back to its source. This hub explains how these signals are created and detected, why companies such as Anthropic and Google are adopting them, and where the technique still falls short — watermarks can be stripped, altered, or evaded by adversarial edits.

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The Claude AI symbol, representing Anthropic's AI assistant, which now embeds invisible watermarks in its text output

What Is an AI Watermark — and How Does It Work?

13 August 2026

AI systems now hide invisible signals inside the text, images, and video they generate. Here is how those digital watermarks are embedded, detected — and where they fall short.

The California State Capitol building in Sacramento, seat of the legislature that passed the AI Transparency Act

What Is California's AI Transparency Act — and Who Must Comply?

6 August 2026

California now requires large AI image, video, and audio tools to watermark their output and offer a free way to check it. Here's what the law requires, and who it covers.

The California State Capitol building in Sacramento, where lawmakers passed the state's AI Transparency Act.

California's AI Transparency Act Takes Effect, Mandates Watermarks

2 August 2026

California's AI Transparency Act took effect August 2, requiring major AI image, video, and audio generators to offer free detection tools and embed hidden origin watermarks.