Signal
Detected, not detected, invalid, or unavailable.
Member provenance desk
Provider signals, checked with their limits attached.
A watermark can support provenance. It cannot prove authorship, ownership, accuracy, or that a person did not contribute. SundAI Times keeps those distinctions inside the result, not buried in the small print.
Coverage
What can be checked today
Coverage varies by provider, format, model, region, and creation date. A missing signal is not proof that content was made by a person.
ProviderContentSignalAccess
OpenAIImages and audioC2PA Content Credentials and SynthIDOfficial verifier available
OpenAITexttextGrain watermarkDetection access is not public
ClaudeTextSynthID-Text-derived watermarkPrivate preview for eligible organisations
ClaudeSupported filesC2PA Content CredentialsReadable with C2PA-aware tools
Paid member preview
Provenance Desk
Choose the provider named in your source claim. Files and text stay in this browser until you continue to the provider-authorised check.
Included withMember · $8/month
Use the original file when possible. Screenshots and conversions can remove signals.
PNG, JPEG, WEBP, GIF, MP3, Opus, AAC, FLAC, WAV, or PCM · up to 50 MiB
Authoritative path
Select a file to begin
OpenAI's verifier checks supported C2PA Content Credentials and SynthID signals. SundAI Times does not infer a result from style or appearance.
Continue to OpenAI VerifyYou will choose the file again on OpenAI's secure verifier.Launch statusThis is the member workflow preview. SundAI Times does not upload or retain the selected content in this version.Join the member launch list
Member report
A conclusion you can defend.
Every completed check will preserve the provider, signal type, validation state, file scope, timestamp, and limitations together.
Scope
The exact file, format, provider, and applicable check.
Limits
What the result cannot establish and what may erase a signal.
Reading a result
Three rules before you act
Detected means evidence, not authorship
A detected signal indicates that a supported provider likely generated or processed the content. It does not identify the user or measure the human contribution.
Not detected does not mean human-made
Editing, screenshots, conversion, old models, unsupported formats, or another provider can all produce an absent result.
Short text and code are weak samples
Text watermarks need enough flexible word choices. Short, factual, translated, paraphrased, or code-heavy material may be inconclusive.
Method
No generic AI score dressed up as a watermark.
The desk only calls a result a watermark check when it uses a provider-authorised signal or a signed provenance standard. Statistical writing classifiers are a different category and are not substituted here.