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How StoryChief supports EU AI Act transparency requirements

Written by Gregory Claeyssens

Learn how StoryChief identifies AI-generated content, what Article 50 requires, and when you remain responsible for adding a visible AI label.

Important: This article provides general information, not legal advice. Your obligations depend on your content, audience, location, and how you use AI. Consult your legal or compliance team for advice about your specific situation.

What does Article 50 of the EU AI Act require?

Article 50’s transparency obligations apply from 2 August 2026. They distinguish between two types of disclosure:

  • Machine-readable marking: Providers of generative AI systems must make supported AI-generated or manipulated content detectable using machine-readable signals, where technically feasible.

  • Visible disclosure: Organizations professionally using and publishing AI content (called deployers under the Act), must clearly disclose certain deepfakes and certain AI-generated text to the people who see them.

A machine-readable mark and a visible disclosure serve different purposes. Having a C2PA credential or an invisible watermark does not automatically remove your responsibility to add a visible label when one is required.

See the European Commission’s Article 50 guidance for the full scope and exceptions.

Who is responsible for what?

Responsibility

Who handles it?

Adding machine-readable provenance to images and videos generated through StoryChief

StoryChief

Making C2PA information reviewable in the Media Library

StoryChief

Determining whether your content requires a visible disclosure

You

Adding and preserving the visible disclosure when publishing

You

Assessing the legal requirements for your particular use case

You and your legal/compliance team

StoryChief provides technical provenance features, but you control the content, its publication context, and the audience that will see it. You therefore remain responsible for visible disclosures required for your use.

What StoryChief does automatically

Provenance for generated images and videos

Images and videos generated through StoryChief include:

  • C2PA Content Credentials: Signed, machine-readable information about the origin and history of a media file.

  • SynthID: An invisible watermark embedded in the generated media.

These signals help compatible tools identify content as AI-generated or manipulated. They are not visible to viewers and are separate from a visible AI label.

Provenance signals are useful indicators, but they do not prove that content is accurate, unedited, legally owned, or presented in the correct context. Metadata may also be removed by editing software, file conversion, or publishing platforms.

C2PA review in the Media Library

When a media file contains a supported C2PA credential, you can review its provenance information in the StoryChief Media Library.

This works for supported media generated through StoryChief as well as files uploaded to StoryChief with an existing C2PA credential.

If StoryChief does not detect a C2PA credential, this does not necessarily mean that the file was created without AI. Its metadata may have been removed, or the tool that generated it may not support C2PA.

When do you need a visible AI label?

Article 50 does not require every piece of AI-assisted content to carry a visible label. The user or organization publishing the content must assess whether the disclosure rules apply.

A visible disclosure may be required in the following situations.

Deepfakes

A deepfake is AI-generated or manipulated image, audio, or video content that:

  1. Resembles an existing or plausibly existing person, object, place, organization, or event; and

  2. Could falsely appear authentic or truthful to the audience.

Examples may include a realistic video of a person saying something they never said, an altered photograph of a real event, or realistic footage of an event that never happened.

The assessment depends on the content, message, publication context, and audience expectations. Clearly fictional or stylized content may be treated differently.

Text about matters of public interest

A visible disclosure may also be required when AI-generated or materially manipulated text:

  • Is published to inform the public;

  • Concerns a matter of public interest; and

  • Has not undergone substantive human review or editorial control.

Matters of public interest can include politics, public health, public safety, environmental protection, consumer safety, financial developments, science, culture, and other subjects of public debate.

The disclosure may not be required where a qualified person has substantively reviewed the content, a person or organization exercises real editorial control, and that person or organization accepts editorial responsibility for the publication. Spell-checking, formatting, or a superficial review is not sufficient by itself. The European Commission provides more detail in its Article 50 questions and answers.

How should you label AI-generated content?

When a disclosure is required, it must be clear, distinguishable, accessible, and perceivable without requiring a special verification tool. It should appear no later than the viewer’s first exposure to the content.

Use plain, specific language such as:

  • AI-generated

  • Generated with AI

  • Modified with AI

  • AI-generated image

  • AI-generated video

  • Voice generated with AI

  • This article was generated or materially modified using AI

Choose wording that accurately describes how AI was used. For example, use “Modified with AI” rather than “AI-generated” when authentic content was only partially altered.

As practical guidance:

  • For an image, embed the label visibly in the image and include an accessible description where possible.

  • For a video, use a clearly readable opening disclosure or a visible overlay. Ensure it remains on screen long enough to be understood.

  • For an article, place the disclosure near the title, byline, or beginning of the text.

  • Avoid placing the disclosure behind controls, captions, or other overlays.

  • Consider whether the disclosure will remain available when content is downloaded or reshared.

The EU also provides optional icons for AI-generated and AI-modified content. Using an icon is optional and does not establish compliance by itself. A plain-language label alongside it can make the meaning clearer.

For evidently artistic, fictional, satirical, or creative works, the disclosure may be presented in an appropriate way that does not interfere with enjoyment of the work—for example, in a caption, introduction, or credits. Confirm the appropriate approach for your use case with your legal team.

What about AI-generated text in StoryChief?

StoryChief does not currently add machine-readable provenance signals to AI-generated text.

Our text-generation capabilities rely on OpenAI models, which do not currently expose a supported text-provenance signal that StoryChief can carry through to published content. OpenAI has stated that its goal is to expand provenance support to text as standards and tooling mature.

We are monitoring these developments and intend to support suitable text-provenance signals when they become available to integrators.

This technical limitation does not remove your responsibility to add a human-visible disclosure when AI-generated text falls within Article 50’s disclosure requirements. See OpenAI’s current provenance guidance for its latest position.

Frequently asked questions

Does StoryChief automatically add a visible AI label?

No. StoryChief automatically includes machine-readable provenance in generated images and videos, but you are responsible for determining whether a visible disclosure is required and adding it to the content you publish.

Is a C2PA credential enough when a visible disclosure is required?

No. C2PA is machine-readable and may not be visible to your audience. The European Commission explicitly states that deployers cannot rely only on embedded machine-readable marking when a clear disclosure to people is required.

Does every AI-generated image or video need a visible label?

No. Under Article 50, the visible-disclosure requirement for images, audio, and video focuses on content constituting a deepfake. Other laws, platform rules, contractual obligations, or internal policies may impose broader requirements.

Do AI-assisted articles always need a visible label?

No. The Article 50 obligation concerns published AI-generated or manipulated text intended to inform the public about matters of public interest. An exception may apply when the text receives substantive human review or editorial control and a person or organization accepts editorial responsibility.

What should I check before publishing?

Confirm:

  • Whether the EU AI Act applies to your content and audience;

  • Whether the content could be mistaken for authentic or truthful media;

  • Whether a visible disclosure is required;

  • Whether your disclosure is clear at first exposure and survives downloads or resharing;

  • Whether AI-generated text has received meaningful human review;

  • Whether other regional laws or publishing-platform rules apply.

For authoritative information, consult the European Commission’s guidelines on Article 50 transparency obligations.

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