Provenance Is Not Correctness

As of this month, Claude watermarks its text output. Anthropic’s documentation is direct about the mechanism: for text, “it weaves an imperceptible watermark directly into the text itself. You won’t see it, and it doesn’t change the meaning, quality, or readability.” For files, it attaches signed provenance metadata following the C2PA standard. Models launched on or after 2 August 2026 support ...