Sora Watermark Checker — Detect OpenAI Sora Images

预期用途

Video watermark support coming in v2 — currently this tool only checks images.

使用方法

Drop the image
Drag a PNG, JPEG, or WebP file into the drop zone. Processing runs entirely in your browser.
Read the detection report
The inspector checks for C2PA Content Credentials that OpenAI Sora embeds in its generated images.
Understand the verdict
A positive match means the image carries Sora-specific fingerprints. Note: video watermark support is coming in v2 — this tool currently only checks still images.

常见问题

How can I tell if an image is from OpenAI Sora?

Drop the image into the AI Image Inspector on this page. It checks for C2PA Content Credentials associated with OpenAI Sora.

Does this tool detect Sora video watermarks?

Not yet. Video watermark support is coming in v2. Currently this tool only checks still images for Sora fingerprints.

What is C2PA?

C2PA (Coalition for Content Provenance and Authenticity) is an open standard for embedding cryptographically-signed provenance metadata in media files. Sora images carry C2PA Content Credentials.

限制说明

Images only in v1This tool checks Sora still images for C2PA Content Credentials. Video watermark support is coming in v2.
Structural detection, not pixel-levelThe inspector reads C2PA manifests. It does not run a neural classifier on the pixels. A Sora image that has been re-encoded with all metadata stripped will be reported as 'No AI generation traces found.'
Screenshots defeat detectionTaking a screenshot of a Sora image strips the C2PA manifest during re-encoding. The screenshot will read as 'No AI generation traces found.'
PNG, JPEG, and WebP onlyThe C2PA chunk reader works on PNG iTXt/zTXt, JPEG APP11 JUMBF, and WebP 'EXIF' chunks. AVIF, HEIC, and TIFF are not decoded.

平台说明

macOS: Preview.app and Quick Look do not surface C2PA Content Credentials. The inspector is the right tool for diagnosing Sora provenance from any source.
Windows: Windows Photos and File Explorer show EXIF but not C2PA. For full Sora provenance, drop the file into the inspector.
Linux: `exiftool -api RequestAll=3 image.png` shows C2PA claim chains. The inspector is the right pick when you want a single report covering the Sora fingerprint.
Web: Runs entirely client-side. The image is read as a Uint8Array; all detectors run as pure JavaScript. No upload, no server roundtrip, no telemetry.