Cryptographic trust for AI-generated content
AI tool companies use Certivu to answer the disclosure question in enterprise RFPs — with cryptographic proof, not vendor promises.
Certivu signs AI output with ML-DSA (Dilithium) — a NIST FIPS 204 post-quantum standard — and embeds an invisible frequency watermark. Anyone can verify provenance in seconds, for free, forever.
Aug 2026EU AI Act Article 50 enforcement begins. Platforms must implement technical measures to disclose AI-generated content. Get compliant →Free tier includes 500 signatures/month · No credit card required
Built for the post-AI era
Every design decision prioritises cryptographic correctness and honest positioning.
ML-DSA Signatures
NIST FIPS 204 post-quantum cryptography. Every signed image carries a Dilithium signature that remains valid even against future quantum attacks.
Frequency Watermark
An invisible DCT-domain watermark survives JPEG recompression, resizing, and social media upload — providing a resilient lookup handle.
Free Public Verification
Anyone can verify provenance — no account needed. Upload an image and get a cryptographic verdict in under a second.
No Content Storage
Certivu stores only hashes and records, never the content itself. Privacy-preserving by design.
Tamper Detection
SHA-3 content hashing detects any modification after signing. Tampered content is flagged immediately.
Generator Revocation
If a generator is compromised, revoke it. All signatures from that generator become invalid instantly across all verifications.
From generation to verification
End-to-end provenance in three steps — from generation to public verification.
Sign at generation time
Your AI system calls Certivu when generating content. Content is hashed with SHA-3 and signed with an ML-DSA (Dilithium) keypair — a NIST FIPS 204 post-quantum signature that stays valid against future quantum attacks.
Embed the provenance token
Certivu embeds an invisible DCT-domain watermark in the image and stores the ctv_ token in XMP metadata. The watermark survives JPEG recompression, resizing, and social media upload.
Verify — free, for anyone
Anyone uploads the image to certivu.ai or calls POST /v1/verify. Certivu extracts the token, re-hashes the content, verifies the ML-DSA signature, and returns a cryptographic confidence verdict.
Simple pricing
Signing is paid. Verification is always free.
Save 20% with annual billing
Free
- ✓500 signs / month
- ✓Unlimited verifications
- ✓@certivu/sdk included
- ✓XMP + watermark embed
- ✓Community support
Starter
$39/mo billed annually
- ✓5,000 signs / month
- ✓Unlimited verifications
- ✓$0.008 per extra signature
- ✓Usage dashboard
- ✓Basic audit log
- ✓Email support
Growth
$159/mo billed annually
- ✓30,000 signs / month
- ✓Unlimited verifications
- ✓$0.006 per extra signature
- ✓Full audit log + exports
- ✓Compliance documentation
- ✓Batch signing API
- ✓Priority email support
Scale
$479/mo billed annually
- ✓150,000 signs / month
- ✓Unlimited verifications
- ✓$0.004 per extra signature
- ✓Full audit exports
- ✓Legal discovery package
- ✓SDK certification badge
- ✓SLA 99.9%
- ✓Dedicated support channel
Enterprise
- ✓Unlimited signs
- ✓Unlimited verifications
- ✓Custom compliance docs
- ✓Legal discovery exports
- ✓Dedicated account manager
- ✓Custom SLA + on-call
- ✓Security review
All plans include unlimited verifications · No credit card required for Free