AI tools: C2PA, watermarks and labels.
Short answer
Of the 25 AI tools in this table, 11 document adding C2PA Content Credentials to what they generate, among them ChatGPT images, Google’s Gemini, Imagen and Veo, Adobe Firefly, Runway and Synthesia, and 7 document an invisible watermark, such as Google’s SynthID or ElevenLabs’ audio watermark. For 10 tools, including several video and music generators, we found no official statement on either, or could not read one.
Official sources: Google Cloud: Content Credentials · Synthesia: Content Credentials and AI labels
| ChatGPT, Codex and the OpenAI API (images) | image | Documented: adds | Documented: adds | 6 October 2026 | Page with quotes |
| Sora (video; discontinued) | video | Documented: adds | Not documented | 3 November 2026 | Page with quotes |
| Adobe Firefly | image and video | Documented: adds | Not documented | 6 October 2026 | Page with quotes |
| Google Gemini image models, Imagen and Veo | image and video | Documented: adds | Documented: adds | 3 November 2026 | Page with quotes |
| Microsoft Designer | image | Documented: adds | Not documented | 3 November 2026 | Page with quotes |
| Bing Image Creator | image | Documented: adds | Not documented | 3 November 2026 | Page with quotes |
| Meta AI image generation | image | Not documented | Documented: adds | 3 November 2026 | Page with quotes |
| Stability AI (hosted API) | image | Documented: adds | Not documented | 3 November 2026 | Page with quotes |
| FLUX (Black Forest Labs) | image and video | Documented: adds | Documented: adds | 3 November 2026 | Page with quotes |
| Midjourney | image | Not documented | Not documented | 3 November 2026 | Page with quotes |
| Amazon Nova Canvas | image | Documented: adds | Documented: adds | 3 November 2026 | Page with quotes |
| Runway | video | Documented: adds | Documented: adds | 3 November 2026 | Page with quotes |
| Grok Imagine (xAI) | image and video | Not documented | Documented: visible watermark | 3 November 2026 | Page with quotes |
| ElevenLabs | audio | Not documented | Documented: adds | 3 November 2026 | Page with quotes |
| Synthesia | avatar video | Documented: adds | Not documented | 3 November 2026 | Page with quotes |
| HeyGen | avatar video | Not documented | Documented: visible watermark | 3 November 2026 | HeyGen’s FAQ lists watermark removal as a feature of the paid Creator plan; it does not mention C2PA. |
| Canva AI | image | Not documented | Not documented | 3 November 2026 | Canva’s AI Product Terms forbid removing provenance or metadata tags, including C2PA metadata, from AI-generated content; they do not say which tags Canva adds. |
| Suno | audio | Not documented | Not documented | 3 November 2026 | Suno’s Terms reserve the right to append a fingerprint, watermark or metadata showing the service tier and forbid removing them to hide an output’s provenance; commercial use depends on a permitted download. |
| Luma (Dream Machine) | video | Not documented | Not documented | 3 November 2026 | Luma’s Terms reserve the right to embed watermarks, content credentials or provenance metadata and forbid removing them; commercial use requires a paid subscription allowing it. |
| Pika | video | Not documented | Not documented | 3 November 2026 | Pika’s FAQ says downloads on current plans, including Free, carry no Pika watermark, and that Free plans do not include commercial use; it does not mention C2PA. |
| Higgsfield | image and video | Not documented | Not documented | 3 November 2026 | Higgsfield’s Terms say it may embed watermarks, secure metadata or C2PA-based provenance signals and do not warrant that a marking is applied to every output. |
| Ideogram | image | Not documented | Not documented | 3 November 2026 | No official statement on C2PA or watermarks found as of 3 November 2026. |
| Kling AI | video | Not documented | Not documented | 3 November 2026 | No official statement could be read as of 3 November 2026: the pages we tried load their text with JavaScript. |
| Udio | audio | Not documented | Not documented | 3 November 2026 | No official statement could be read as of 3 November 2026: the pages we tried load their text with JavaScript. |
| Leonardo.Ai | image | Not documented | Not documented | 3 November 2026 | Not checked: Leonardo’s terms page refused scripted requests (HTTP 403) on 3 November 2026, and we did not try to get around it. |
How entries are chosen
- An entry exists only if we found the statement on the vendor’s, platform’s or regulator’s own page and quoted it. Entries we could not confirm that way are left out rather than guessed.
- Every quoted sentence was re-checked against the live page on 6 October 2026 by script. Pages that block scripted fetches were read from an Internet Archive snapshot of the same page, and the entry says so.
- We report what a source says, nothing more. “Not documented” means we did not find it in the pages we read; it is not a statement that something is absent.
- On 3 November 2026 the quotes of 11 of the 13 earlier tool pages were checked again against the live pages; OpenAI’s and Adobe’s help pages refused scripted requests (HTTP 403), so those two keep their 6 October 2026 readings, shown with that date.
- A tool gets a page of its own only when its documentation says enough to quote; the others are rows here with the official page we read, or a note that none could be read.
- Google Veo is covered on the Gemini, Imagen and Veo page.
Sources
Each entry links to its own sources, with the date each was last checked.
Page reviewed . Proofcan is a technical tool, not legal advice, and does not guarantee compliance.