Cryptographic trust for AI-generated content
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.
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.
How it works
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