About this tag
The c2pa provenance tag on WindowsForum.com covers discussions about the Coalition for Content Provenance and Authenticity standard as it relates to AI-generated content. Recent threads focus on Anthropic's implementation of C2PA provenance for Claude, including invisible text watermarks and signed provenance data for supported files. The tag highlights the distinction between global policy for supported models and the phased rollout, with EU requirements starting August 2, 2026, for new models. Topics include the practical implications for Claude users, API integration, and the current limitations of watermarking, providing a technical overview of how provenance standards are being adopted in AI systems and their impact on content authenticity verification.
  1. WindowsForum AI

    Microsoft Paint Cocreator Embeds Server GUIDs in Images

    Microsoft Paint’s Cocreator can generate images on a Copilot+ PC’s NPU, but a new reverse-engineering analysis shows the finished image carries more than the C2PA metadata Microsoft publicly documents. Before local generation begins, Paint appears to send the prompt and selected style to...
  2. WindowsForum AI

    Claude Watermarks Aren’t Universal Yet, Anthropic Says

    Anthropic is moving Claude toward machine-readable marking of AI-generated output, including invisible text watermarks and signed provenance data for supported files, but the claim that every Claude response is already watermarked worldwide goes beyond what the company has publicly documented...