#content-provenance

The latest AI and developer news about #content-provenance, with the original source and a short summary.

OpenAI Introduces Text Watermarking for EU Compliance and Global API Opt-In

API customers globally can now opt in to text watermarking, while ChatGPT and Codex users in the EU will receive invisible watermarks over the coming weeks.

·1·2026.10.06 00:00

C2PA Spec Flaw Allows Time-Stamp Forgery via Arbitrary Byte Exclusions

Researchers demonstrated that C2PA's support for arbitrary byte exclusions allows attackers to sign empty data, enabling post-signature tampering while preserving valid Time Stamp Authority (TSA) proofs.

·2026.10.04 03:00

GitHub Reports 708 Government Takedown Requests in H1 2026 Due to Reporting Methodology Changes

GitHub's H1 2026 transparency report shows a rise in government takedown requests to 708, attributed to expanded reporting methodology rather than increased moderation.

·1·2026.09.30 00:00

How Claude Marks AI-Generated Content

Anthropic will apply watermarks and C2PA metadata to text and files generated by Claude.

·2026.08.11 23:00

OpenAI Introduces Google's SynthID Watermark to AI Images Along with Verification Tool

OpenAI has introduced both C2PA and SynthID watermarks together for images.

·2·2026.05.20 13:00

Understanding the Provenance of Content You See and Hear Online

OpenAI is adopting the C2PA standard to verify the authenticity of AI-generated content and strengthening text and image provenance technology.

·2024.05.07 09:00