Help center

Frequently asked questions

Answers about authorship registration, content provenance, C2PA, artificial intelligence, and using SignaIP.

Proof and authorship

How do I prove a photo is mine?

You register the file with SignaIP before publishing it. The record associates declared authorship information with the file and creates verifiable references with a timestamp. If someone uses the image later, an earlier record exists and can be consulted and compared with the file being presented.

What if I already published without registering?

You can still register the file, but the record documents its existence and associated declarations from that date, not from the original publication. That is why registering before sharing is recommended. Reconstructing authorship after a violation usually requires more evidence and can take longer.

Who can verify my record?

Anyone can verify a file without an account on SignaIP. Content Credentials can be read by C2PA-compatible tools, and public record references can be consulted independently. Confidence in declared authorship also depends on the identity and information associated with the record.

What happens if someone edits my signed image?

An edit can break the integrity binding between the file and its credential. Verification can then show that the presented content no longer fully matches the registered file. This does not prevent editing, but it can indicate that the provenance chain was modified.

How it works

Do I need technical knowledge to use it?

No. You upload the file, provide the authorship information you want to declare, and choose AI-use permissions. SignaIP processes the record, generates credentials, and makes the signed file and provenance certificate available according to the features included in your plan.

Which file types does SignaIP accept?

Verification accepts image formats including JPG, PNG, WEBP, TIFF, HEIC, and HEIF. Available formats, size limits, and features for video, documents, and audio can vary by functionality and plan. Check the plans page for current conditions.

What information is recorded in the file?

A record can include the author's declared identity, associated website and profiles, file technical data, date and time, AI-use permissions, and available provenance information. The effective set of information depends on the file, user choices, and tools involved in the process.

How does verifying a third-party file work?

You submit the file for analysis. The platform checks for available credentials and provenance information, such as declared author, date, and recorded history. Separately, it can analyse technical indicators of AI generation or manipulation. Provenance and AI analysis are distinct results.

The C2PA standard

What is C2PA?

C2PA is the Coalition for Content Provenance and Authenticity, an open standard for recording information about the origin and history of digital content. The information is organised in a signed manifest, also presented as Content Credentials, which compatible tools can read and verify.

Is C2PA the same as a watermark?

No. A watermark visibly changes an image and can be removed or cropped. C2PA organises cryptographically signed declarations and provenance information. When the binding to a file is altered, verification can indicate that the credential's integrity has been broken.

Do credentials say whether content is true?

No. Content Credentials help people review who declared a file's origin, which actions were recorded, and which tools were involved. They do not determine whether the event depicted is true. Documented provenance and the truth of a fact are different questions.

Who can read a C2PA credential?

Tools compatible with the C2PA standard can read and present the information available in a credential. SignaIP provides file verification, and other compatible implementations can also interpret a manifest according to their own trust and validation policies.

Artificial intelligence

How do I declare AI-use restrictions?

During registration, you can declare permissions for generative model training, non-generative model training, data mining, and inference. These permissions record your preference alongside provenance information; they do not technically prevent third parties from disregarding the declaration on their own.

Can you tell whether an image was generated by AI?

SignaIP can analyse technical indicators and present a probability of AI use. When intact Content Credentials are available, they may declare how the file was created and which tools were used. Without credentials, the analysis relies on indicators rather than a definitive confirmation.

Does a missing credential mean the image is fake?

No. A file without a credential can be authentic, but it does not offer a C2PA provenance chain to review. The absence of Content Credentials neither confirms nor rules out AI use, declared authorship, or the truth of what is depicted.

How is this different from an AI label on a social network?

A platform label depends on that service's rules and implementation. A provenance record associates a declaration with a file and creates timestamped verifiable references. These are different mechanisms: one is a platform policy; the other documents information about a specific file.

Legal, press and elections

Does a SignaIP certificate hold up as legal evidence?

The certificate gathers record data and can help document priority, integrity, and declarations associated with a file. The acceptance and weight of any document in a proceeding depend on the specific case, other evidence, and the assessment of the competent authorities.

How can newsrooms use the platform?

Newsrooms can register images and other materials before public circulation to document their provenance. When they receive a third-party file, they can verify credentials, declared information, and available history. This supports reporting, but it does not replace editorial or journalistic verification.

Why register before rather than after a problem?

An earlier record creates a time reference and associates declarations with a file before a dispute or improper publication. After a problem arises, evidence can still be collected, but the file's origin must be reconstructed from available elements, which can be more limited.

Does SignaIP have access to my images?

File and data processing follows product settings and the Privacy Policy. In credentials, you choose what information to declare. Records and references on public networks can be verifiable by third parties, so avoid including unnecessary personal or sensitive information.

Plans and account

Is SignaIP free?

Yes. SignaIP offers a Free plan with included features to get started. Paid plans expand registration limits, advanced verification, workspaces, and additional features. Check the plans page for current limits and prices.

Do I need to pay to verify a file?

Basic verification is available on the homepage without registration. Advanced features, usage limits, and additional functionality depend on the selected plan. The plans page presents the current conditions for each option.

What is batch signing?

Batch signing registers several files at once with authorship information and AI-use permissions defined for the group. It is useful for people working with a high volume of content, such as communication teams, photographers, and newsrooms.

What happens to my records if I cancel?

Cancellation affects new registrations and access to plan features according to their terms. Files already signed and public references already published are not automatically deleted. Consult the Terms of Use for conditions that apply to your plan and existing records.