Trust & security
Legally sound, tamper-evident and data-minimal — by design.
DUOLEXX is built for what matters: a binding legal language, provable signature integrity and a disciplined approach to your data.
Authoritative legal language
Every document is created in its country's legal language as the binding version — the translation aids understanding, not interpretation.
Signature with integrity proof
On first signature the content is frozen and hashed with SHA-256. So it's provable that both parties signed the same wording.
Documents belong only to you
Access is controlled per document — no one but the authorized reads your content.
Copy protection before payment
Unpaid previews are protected against simple copying and printing; after purchase you get the clean PDF.
Keys stay server-side
Powerful server keys live only in the server runtime — never in the browser, never in the code bundle.
Data-minimal & GDPR-minded
We collect what the document needs — no third-party trackers in the core flows. Payments run securely via Stripe.
Honest note
The clauses are carefully researched but don't replace individual legal advice. For high-stakes cases we recommend a lawyer's review.