OpenAI Rolls Out EU Text Watermarking and Provenance Controls

OpenAI-related reporting describes a regional ChatGPT rollout of textGrain watermarking in the EU, API opt-in access and limited researcher access as part of its response to text-provenance requirements. Reports caution that watermarking does not prove authorship and may weaken after light paraphrasing, leaving effectiveness, false positives, coverage and regulatory sufficiency unresolved. Some technical and legal claims remain insufficiently verified.