China: TC260 opened consultation on Guidelines on Identification Methods for AI-Generated Synthetic Text Content

On 24 June 2025, China’s National Cybersecurity Standardisation Technical Committee (TC260) opened a public consultation on the draft Cybersecurity Standard Practice Guide – Artificial Intelligence Generated Synthetic Content Identification Method: File Metadata Implicit Identification for Text Files until 6 July 2025. The consultation focuses on the draft technical guide, which is based on the mandatory national standard GB 45438-2025 Cybersecurity Technology—Identification Methods for AI-Generated Synthetic Content. The Guide provides technical guidance for implementing metadata-based implicit labelling of AI-generated text content across formats including OOXML, PDF, UOF, OFD, and Markdown. It outlines storage locations, encoding methods, and mandatory fields such as Label, ContentProducer, and ProduceID, aligned with the requirements of GB 45438-2025.