EU AI Act Article 50 Watermark Attestation
Signed Article 50 attestations: C2PA + invisible watermark + fingerprint. EU 2 Aug 2026 cliff.
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meok-watermark-attest-mcp
Why this exists
EU AI Act Article 50 transparency obligations apply on 2 November 2026 β this is the cliff that DIDN'T move post-Omnibus. The Code of Practice on AI-generated content (finalising May-June 2026) explicitly requires three layers of disclosure for synthetic content:
- C2PA manifest (Content Credentials) attached to media
- Invisible watermarking (e.g., SynthID, Tree-Ring)
- Fingerprinting (perceptual hashes for downstream provenance tracking)
Single-layer C2PA is not sufficient. Most teams don't know this yet. The few open-source tools that exist cover one layer at most.
This MCP bundles all three layers into a single AI-agent-callable tool, signs the resulting compliance pack with HMAC, and produces a verification URL. Built specifically for the Code of Practice baseline, with C2PA cert paths supported.
Real usage example
A media-AI startup serving German + French publishers needed to flip Article 50 disclosure on for every AI-generated image their tool produced. They installed:
pip install meok-watermark-attest-mcp
Prompted Claude during their pipeline integration:
'For every image produced by our generative model, generate a Code-of-Practice-aligned disclosure pack: C2PA manifest with our org cert, SynthID invisible watermark, perceptual fingerprint, and a signed attestation. Embed all three before publishing.'
Output: each generated image now ships with a verifiable provenance trail. When a downstream platform asks 'is this AI-generated?', the answer is a verification URL β not a lawyerly disclaimer. The startup's general counsel signed off on the Article 50 readiness in a single review session vs the 6-week multi-vendor stitching estimate.
meok-watermark-attest-mcp
EU AI Act Article 50 watermarking + transparency MCP. Built for the 2 November 2026 cliff.
The Digital Omnibus (Parliament vote 569-45 on 23 March 2026) delayed high-risk obligations to Dec 2027 / Aug 2028 β but Article 50 only slid by 3 months, to 2 Nov 2026. That's the next EU AI Act deadline every chatbot operator + GPAI provider + deepfake user must hit.
By MEOK AI Labs.
Who needs this
- Chatbot operators β Art 50(1) requires disclosure that user is interacting with AI
- GPAI providers β Art 50(2) requires synthetic content (audio/image/video/text) be machine-readable as AI-generated
- Emotion-recognition / biometric-categorisation deployers β Art 50(3) requires informing affected persons
- Deepfake generators β Art 50(4) requires disclosure that content is artificial
- Publishers of AI-generated text on public-interest matters β Art 50(4) text rule
Tools
get_deadline_statusβ live status + obligation matrixclassify_obligationsβ given system characteristics, return triggered Art 50 sub-articlesgenerate_disclosure_textβ produce compliant copy per surface + 5 languages (en/de/fr/es/it)audit_content_pipelineβ scan sample output + named pipeline steps for compliance gapssign_watermark_attestationβ Pro: HMAC-SHA256 signed attestation with public verify URL
Install
pip install meok-watermark-attest-mcp
Tiers
- Free β 10 audits/day, full classifier + disclosure templates
- Pro Β£199/mo β unlimited + signed attestations + monthly regression checks β subscribe
- Enterprise Β£1,499/mo β content-pipeline integration + custom templates per language/jurisdiction
- Β£499 one-off Article 50 Readiness Pack β bespoke audit + signed attestation
Use code MEOKEAT for 25% off the first 3 months.
Sources
- EU AI Act Article 50 (Regulation (EU) 2024/1689)
- Digital Omnibus position (Parliament vote 569-45-23 on 23 March 2026)
- C2PA Content Credentials specification 2.0
Related MEOK MCPs
meok-omnibus-tracker-mcpβ live Digital Omnibus statuseu-ai-act-compliance-mcpβ full EU AI Act auditmeok-attestation-verifyβ verify signed attestations
License
MIT β MEOK AI Labs, 2026.
Distribution channels
- PyPI:
pip install meok-watermark-attest-mcp - Apify Store (Pay-Per-Event): https://apify.com/knowing_yucca/meok-watermark-attest
- GitHub (source): https://github.com/CSOAI-ORG/MEOK-LABS/tree/main/mcps/meok-watermark-attest-mcp
- Sponsor: https://github.com/sponsors/CSOAI-ORG Β· Pro Β£79/mo β
