Watermarking & Content Provenance

Tools that embed machine-readable watermarks or cryptographic provenance metadata (including C2PA Content Credentials) into AI-generated images, video, audio and text — the core technical requirement of Article 50(2).

Art. 50(2) — Machine-readable marking of synthetic contentArt. 50(4) — Deepfake & public-interest text labeling

Google SynthID

Featured placement

Watermarking

Imperceptible watermarking for AI images, audio, video and text from Google DeepMind.

images · video · audio · text · Free

FreeArt. 50(2)

Adobe Content Credentials

Featured placement

Watermarking

The C2PA-based provenance standard backed by Adobe, Microsoft, OpenAI and camera makers.

images · video · Free

FreeC2PAArt. 50(2)

IMATAG

Featured placement

Watermarking

European invisible-watermarking vendor with an EU AI Act-focused offering.

images · video · Paid

PaidArt. 50(2)

Digimarc

Watermarking

Enterprise digital watermarking veteran, now applied to AI-content authentication.

images · Enterprise

EnterpriseArt. 50(2)

Steg.AI

Watermarking

Deep-learning forensic watermarks that survive screenshots, crops and re-encoding.

images · video · Paid

PaidArt. 50(2)

Truepic

Watermarking

C2PA-native camera SDK and content authenticity platform.

Watermarking · Enterprise

EnterpriseC2PAArt. 50(2)

c2patool (CAI open source)

Watermarking

Official open-source CLI and Rust SDK for creating and verifying C2PA manifests.

Watermarking · Open source

Open sourceC2PAArt. 50(2)

Numbers Protocol

Watermarking

Blockchain-anchored provenance registry for digital media.

Watermarking · Freemium

FreemiumC2PAArt. 50(2)

Attestiv

Watermarking

Media authentication and tamper detection for photos, video and documents.

video · Freemium

FreemiumArt. 50(2)Art. 50(4)

Meta Stable Signature

Watermarking

Open-source rooted watermarking for latent-diffusion image models.

Watermarking · Open source

Open sourceArt. 50(2)

AWS AI content indicators

Watermarking

Built-in invisible watermarking and C2PA credentials for Amazon Bedrock image models.

Watermarking · Paid

PaidC2PAArt. 50(2)

Microsoft Azure AI Content Safety

Watermarking

Azure's content-safety suite; DALL·E outputs on Azure carry C2PA credentials.

Watermarking · Paid

PaidC2PAArt. 50(2)

Trufo

Watermarking

Invisible watermarking startup focused on authenticating both human and AI content.

images · Freemium

FreemiumArt. 50(2)

C2PA Lab

Watermarking

Free in-browser C2PA Content Credentials inspector — files never leave your device.

Watermarking · Free

FreeC2PAArt. 50(2)

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