eIDAS-Compliant · EU-Sovereign · Zero-Knowledge

They sign. They see.

Stop sending naked links. Gate your intellectual property behind a fast, legally verifiable electronic signature. You get an audit trail; they get access.

2-Minute Setup · End-to-End Encrypted · eIDAS SES (EU No 910/2014) · GDPR-Native Infrastructure

SignToSee — secure document gateway
SignToSee
Gate Generated
sha256 · a7f9x2e1c4 · SIGNED
Simple and Fast

A click-to-accept NDA + evidence trail.

Stop sending unprotected links. Require clients to accept one-click Evaluation Terms before they view your work, generating a reliable evidence trail without the heavy friction of a traditional NDA.

Create fast access terms →

Without SignToSee

"Here's my Figma link 🙂"

No clear evaluation-only permission scope

No verified acceptance event before access

Weak or fragmented evidence if a dispute appears

With SignToSee

"Access requires Access & Evaluation Terms (NDA-compatible)."

Verified email + acceptance event before viewing

Timestamped eIDAS-backed audit trail

Exportable evidence package when needed

Core Feature — Access & Evaluation Gating

We couldn't read your files
even if we wanted to.

Keep your files exactly where they belong - on Figma or Notion. We add a fast legal access layer in front of them using zero-knowledge client-side encryption.

How it works

1. You paste your URL → we encrypt it in your browser

2. We store only an opaque ciphertext — never the plaintext

3. The decryption key lives in the URL fragment (client-only)

4. Recipient accepts terms (NDA-compatible) → key is revealed client-side only

Encrypted in browser
Sentinel + storage

5GB EU-sovereign storage

Optional AES-256 payload encryption

Download audit trail + CSV export

Immune to US CLOUD Act

Premium Upgrade — Secure File Hosting

Need to send a raw file?

Sentinel+ includes 5GB of secure, EU-sovereign file hosting. Guardian goes up to 20GB — both with optional AES-256 payload encryption. Upload once, gate it with the same Access & Evaluation Terms. Your raw file never touches a US data center.

View Sentinel+ pricing →
eIDAS & GDPR Art. 17(3)(e) Compliant Architecture

Cryptographic Integrity by Design.

SignToSee is not just a gate — it is a mathematically verifiable sequence of evidence. Keep control over what you share. Every interaction is logged, hashed, and sealed permanently in an isolated per-gate ledger.

Step 01

Zero-Knowledge Encryption

AES-256-GCM

The browser encrypts the file URL before it leaves the device. Our servers store only an opaque ciphertext blob. The decryption key lives exclusively in the URL fragment — technically unreachable by SignToSee or any third party.

Algorithm
AES-256-GCM
Key scope
Sender / Recipient only
Server access
None (zero-knowledge URL mode)
Step 02

eIDAS-Compliant Audit Trail

SES — Simple Electronic Signature

When a recipient clicks Agree, we capture a Forensic Snapshot under EU eIDAS Regulation No 910/2014. Three data points are recorded atomically and sealed against retroactive alteration.

IP Address
Verified + logged
Timestamp
UTC — ms precision
Fingerprint
Browser fingerprint hash
Step 03

Isolated Per-Gate Ledgers

Isolated-by-Design Architecture

Instead of a fragile global ledger, each Gate gets its own strictly isolated cryptographic hash chain. Every signature is linked only to prior signatures on that exact document. You can safely delete or archive a Gate without breaking the integrity of your other work.

Hash function
SHA-256
Architecture
Isolated Per-Gate Chains
Output
Verifiable audit log

Live Integrity Mockup // SHA-256 Hash Chain

Tamper-proof by design.

Our database uses a strict append-only ledger. If any actor — including a SignToSee engineer — attempts to retroactively alter a historical signature record, all subsequent hashes immediately invalidate.

Legal Admissibility

eIDAS Regulation No 910/2014 — Art. 25
GDPR Art. 17(3)(e) — Integrity obligation
Append-only audit log (tamper-evident)
Block #1 — Signature #1Verified
recipientc.lepage@acme.fr
timestamp2026-03-11T14:23:08Z
sha2568f43434664bf6b96df89dda6...9e
prev_hash: ✓ verified
Block #2 — Signature #2Verified
recipientk.muller@ventures.eu
timestamp2026-03-12T09:44:55Z
sha2567b4c8921a12f8d1e3b4c6d...f1
prev_hash: ✓ verified
Block #3 — Signature #3Verified
recipients.ahmed@partner.io
timestamp2026-03-13T16:02:31Z
sha2569a2f1b4c6d8e5f3a2b4c7...e2

Built in Belgium · Hosted in Europe · Immune to the US CLOUD Act

Transparent Pricing

Confidential sharing done easily.
Fixed monthly cost.

Zero lock-in, zero surprise invoices. Pick the tier that fits your workload.

Scout

€0/month

Forever free

Lock your first client. No credit card.

  • 1 Active Link
  • 3 Creations / month
  • 5 Signatures / month
  • Basic Analytics
  • Standard eIDAS SES
  • Forced SignToSee Branding
  • Open Access only (no email whitelisting)
Start for Free
Most Popular

Sentinel

€9.99/month

billed annually · excl. VAT

The Core Defense Engine for working freelancers.

  • Up to 15 Active Links
  • 50 Creations / month
  • 150 Signatures / month
  • Full eIDAS Audit Trail
  • Email Verification
  • Custom Branding (Logo & Colors)
  • Email Whitelisting
Deploy Sentinel
Coming Soon

Enterprise tier — stay tuned

All prices in EUR · VAT charged at the applicable rate for your jurisdiction · Billed annually · No contracts

Stop sending bare links.
Start with fast access terms.

Join professional users who use SignToSee to gate access with Access & Evaluation Terms, including familiar NDA wording when needed.

No credit card required · Scout tier is permanently free