OpenAI Adds C2PA and SynthID Dual Watermarks to AI-Generated Images

Dual-Layer Authentication for AI-Generated Images

OpenAI has announced it is integrating both C2PA Content Credentials and Google SynthID invisible watermarks into all images generated by ChatGPT, Codex, and the OpenAI API. The combination marks a first for the industry.

How C2PA and SynthID Work Together

C2PA embeds detailed provenance metadata into images — including the creation tool, date, and edit history. SynthID adds an invisible watermark layer that survives image transformations such as screenshots or recompression, compensating for scenarios where metadata may be stripped. The two approaches complement each other's weaknesses.

Public Verification Tool Launches in Preview

OpenAI's new Verify tool lets anyone upload an image to check whether it was created by OpenAI products. Currently limited to OpenAI-generated content, it is designed to expand to cross-industry content over time.

Industry Collaboration on Content Authenticity Standards

The announcement arrives amid growing concern about deepfakes and AI-generated disinformation. By partnering with Google DeepMind to implement cross-platform SynthID watermarking, OpenAI is moving toward industry-wide standards for AI image verification that go beyond any single company's tools.