A sophisticated editorial illustration for an article about AI text watermarking. A clean white sheet of paper containing several paragraphs of ordinary-looking black text is being examined under a UV light, in the manner of checking a banknote for authenticity. Where the ultraviolet beam falls across the page, a subtle hidden digital watermark becomes visible beneath the text: a glowing pattern incorporating the letters “AI”, faint binary-style markings and an abstract digital fingerprint. Outside the UV beam, the text looks completely normal. The concept should immediately suggest that AI-generated writing can contain an invisible signature detectable by special analysis.