/c2pa-metadata

name: c2pa-metadata
description: "Embed a C2PA provenance manifest into an AI-generated marketing asset (PNG, JPG, WebP, GIF, TIFF, MP4, MOV, WebM, MP3, WAV, PDF) via scripts/embed-c2pa.py — produces a signed copy of the file carrying IPTC digital-source-type AI claims, an optional c2pa.ai-disclosure assertion for EU AI Act Article 50 (applicable 2 Aug 2026), and a JSON status report. Triggers on \"/digital-marketing-pro:c2pa-metadata\", \"sign this AI image for EU compliance\", \"add content credentials to this asset\", \"embed provenance metadata\", \"mark this video as AI-generated\". Uses a self-signed dev certificate unless --signing-cert/--signing-key are supplied; pairs with /digital-marketing-pro:check, which verifies manifests pre-publish."

/digital-marketing-pro:c2pa-metadata — Embed Content Authenticity Provenance

Purpose

Wraps `scripts/embed-c2pa.py` to add a **C2PA (Coalition for Content Provenance and Authenticity) manifest** to any AI-generated marketing asset. The manifest carries a machine-readable provenance trail (who generated it, what generator was used, what prompt produced it, when it was reviewed) plus a visible AI-generation claim in the IPTC digital-source-type vocabulary.

This is the technical mechanism brands use to comply with:

• **EU AI Act Article 50** (applicable 2 August 2026) — generative-AI marketing content must be marked in a machine-readable format using open, interoperable standards. C2PA is the emerging backbone. Penalty for non-compliance: up to **€15 million or 3% global annual turnover**.
• **NY synthetic-performer disclosure law** (effective June 2026) — $1K–$5K per violation, $10K repeat; applies to synthetic influencers and AI-generated endorsements.
• **FTC May 2026 endorsement guidance** — covers AI testimonials and synthetic creator content.
• **Australia Online Safety Act / UK Online Safety Act** — emerging deepfake disclosure requirements.

The resulting asset can be inspected by any C2PA-aware viewer (Adobe Photoshop, Lightroom, Truepic, [contentcredentials.org/verify](https://contentcredentials.org/verify)).

C2PA spec versions to be aware of (June 2026)

• **Content Credentials 2.3** (released 9 February 2026 — [launch post](https://c2pa.org/the-c2pa-launches-content-credentials-2-3-and-celebrates-5-years-of-impact-across-the-digital-ecosystem/)) added format support for: **live video** (broadcast/streaming), **plain text documents**, **OGG Vorbis audio**, **large AVI video files**, and **EXIF Original Preservation Images**. If a brand is signing live-stream video or text-based assets for the first time, 2.3 is the floor version to target.
• **C2PA Spec 2.4** (April 2026 — [spec.c2pa.org/specifications/specifications/2.4](https://spec.c2pa.org/specifications/specifications/2.4/specs/C2PA_Specification.html)) introduces the **AI Disclosure Assertion (`c2pa.ai-disclosure`)** for machine-readable AI transparency info — this is the assertion the EU AI Act Article 50 deployer pathway will rely on. The final Code of Practice on Transparency of AI-Generated Content (published 10 June 2026) references C2PA-style assertions as the canonical machine-readable marking mechanism for both providers and deployers. See `skills/context-engine/eu-code-of-practice.md` for the full Article 50 context.
• The **C2PA Trust List** is now handled via the public C2PA Conformance Program (any CA meeting the Certificate Policy can join). Production signing certificates should come from a Conformance-Program-listed CA, not an ad-hoc cert.

**For DMP outputs**: `embed-c2pa.py` now supports `--ai-disclosure`. Pass it to embed the C2PA 2.4 `c2pa.ai-disclosure` assertion alongside the existing IPTC digital-source-type claim. The combination gives you both human-readable (IPTC) and machine-readable (`c2pa.ai-disclosure`) EU AI Act **Article 50** signaling — this is the deployer-side machine-readable pathway the final Code of Practice (10 June 2026) points to as the canonical marking mechanism. See `skills/context-engine/eu-code-of-practice.md` for the full Article 50 context.

When to invoke

• Right after any AI image / video / audio generation step in the engagement workflow (Part 11 — AI Creative Instructions output)
• Before handing a generated asset to the design team for review
• As a pre-publish gate in `/digital-marketing-pro:check` for EU-targeted assets
• Bulk-applying to a backlog of AI-generated assets before EU AI Act enforcement on 2 Aug 2026

Quick examples

# Single asset — image generated by Vertex AI / Nano Banana Pro
/digital-marketing-pro:c2pa-metadata \
    --input assets/q3-launch-hero.png \
    --output assets/signed/q3-launch-hero.png \
    --brand "Acme Corp" \
    --generator "Vertex AI / Nano Banana Pro" \
    --ai-claim ai-generated-content \
    --prompt "minimalist product hero shot, soft natural lighting"

# Video with human review tracked
/digital-marketing-pro:c2pa-metadata \
    --input campaigns/launch-video-v3.mp4 \
    --output campaigns/signed/launch-video-v3.mp4 \
    --brand "Acme Corp" \
    --generator "Runway Gen-4" \
    --ai-claim ai-generated-content \
    --reviewer "Jane Smith"

# EU-targeted asset — add the machine-readable Article 50 AI-disclosure assertion (C2PA 2.4)
/digital-marketing-pro:c2pa-metadata \
    --input assets/q3-launch-hero.png \
    --output assets/signed/q3-launch-hero.png \
    --brand "Acme Corp" \
    --generator "Vertex AI / Nano Banana Pro" \
    --ai-claim ai-generated-content \
    --ai-disclosure \
    --prompt "minimalist product hero shot, soft natural lighting"

# Human-created image with AI-assisted edits
/digital-marketing-pro:c2pa-metadata \
    --input assets/founder-headshot-edited.jpg \
    --output assets/signed/founder-headshot-edited.jpg \
    --brand "Acme Corp" \
    --generator "Adobe Generative Fill" \
    --ai-claim ai-assisted-edits

# Production sign with a real C2PA signing certificate
/digital-marketing-pro:c2pa-metadata \
    --input as