Existing Sora video provenance
Sora video watermark and C2PA checker
Inspect existing Sora MP4, MOV, and M4V exports up to 20 MB for C2PA Content Credentials, QuickTime metadata, encoder fields, and recorded OpenAI claims.
- Original and historical exports
- C2PA validity and trust
- MP4 and QuickTime metadata
- Checking service
- Choose file
- Inspect content
- View report
Step 1 of 4: Checking service.
Service check
Preparing the provenance inspector
Confirming the inspection service is ready before anything is sent.
Review the evidence in a Sora export
OpenAI states that Sora became unavailable on April 26, 2026. Existing exports still need provenance review. This workflow examines file and container records; visible moving marks require a separate review of the frames.
Signed provenance
Review a returned manifest’s actions, integrity, and signer trust before drawing an attribution conclusion.
Container evidence
Inspect MP4 and QuickTime software and encoder fields without treating them as proof of origin.
Moving watermark review
A visible Sora mark is a frame-level signal. This file inspection does not automatically detect it.
Compare exported copies
Re-encoding and platform processing can remove credentials. Compare the original export with the version you plan to publish.
Understand results across different files
Compare the original export with the copy you received. These examples explain possible outcomes; your report reflects only the checks completed on your submitted file.
- Original Sora MP4, MOV, or M4V export with credentials
- Parsed credential with validation and trust states
Inspect recorded actions and the signer. Only valid, trusted provenance can support stronger attribution; a manifest's presence alone is insufficient.
- Credential with a broken signature or content binding
- Invalid credential
The file failed the reported integrity check. Do not treat its claimed generator or issuer as verified authorship.
- Unsigned software tag naming Sora
- Declared source only
A software name can be edited or copied. It is a useful lead, not a verified provider watermark.
- Screenshot, re-encoded, or stripped copy
- No credential found, or reduced evidence
This copy may have lost its file records. Missing metadata does not establish human origin or absence of an embedded watermark.
- Video with a moving Sora logo
- Separate visual review
This metadata workflow does not decode frames. OpenAI's documented image/audio verifier does not add video-watermark coverage to this result.
How to check your content
Select the least-reencoded video
Upload an MP4, MOV, or M4V file up to 20 MB, preferably the original Sora export.
Inspect container and credentials
Review QuickTime or MP4 fields and any C2PA generator, actions, validation, and signer-trust information returned.
Review visible marks separately
If a moving Sora label matters to your review, inspect the video frames. Record missing or unsupported checks without inferring human origin.
Evidence you can use
Every report separates cryptographic credentials, declared metadata, and provider-controlled verification. You can see exactly what ran before deciding what the file proves.
- C2PA Content Credentials parsing and cryptographic validation for supported files.
- Declared EXIF, XMP, IPTC, container, and generator metadata evidence.
- A precise boundary and official path for provider-controlled verification when one exists.
Frequently asked questions
Can I inspect an existing Sora video?
Yes. Upload a supported MP4, MOV, or M4V export up to 20 MB. This tool reads the submitted video's C2PA and container metadata; it does not require an active Sora account.
Is Sora still available to generate new videos?
OpenAI's Sora safety page says the product became unavailable on April 26, 2026. This checker remains useful for historical exports, archives, and copies already in circulation.
Does the checker detect the moving Sora logo?
The automatic workflow inspects file provenance and container records. Visible moving logos require a separate frame review; this page does not present metadata inspection as visual-logo detection.
Does OpenAI's public provenance verifier accept Sora video?
The documented public verifier and content-provenance API cover supported images and audio. Their coverage should not be assumed to include Sora MP4 video.
Why did credentials disappear after a video was uploaded elsewhere?
Transcoding, screen recording, and platform processing can remove manifests and replace encoder tags. Compare the original export with the processed copy; absence in the second file does not erase its history.