Personal Document Seal
Scan this QR code to save this document in your authenticator app. You'll get a 6-digit code that's unique to this exact document. If anyone ever changes even one word, the code won't match, so you'll know instantly.
Can't scan? Open the QR code from your phone, or copy the link below.
In your app, look for:
Or enter this key manually:
Your app should match the center code:
🔎 How does this work?
The code on your phone is generated from a unique digital fingerprint of your document, every word, every field, every signature. Think of it like a tamper-evident seal on a package.
This fingerprint uses the same security standard that protects online banking and cryptocurrency. It's virtually impossible to alter the document without changing the fingerprint.
Your authenticator app works completely offline, no internet needed, no servers involved. If this document is ever questioned, just open the app and compare codes. A match means nothing has changed.
Technical details: The fingerprint is a SHA-256 hash of the document content. Your app stores it as a TOTP secret (RFC 6238) and generates time-based codes entirely offline. SHA-256 is the same algorithm securing Bitcoin, TLS, and banking infrastructure, finding a collision would require ~2²⁵⁶ attempts, which is computationally infeasible.
Copy full setup URI
What's protecting your document
- ✓ PAdES-LTA digital signature, green checkmark in Adobe Acrobat
- ✓ Dual RFC 3161 trusted timestamps from independent authorities
- ✓ 5 independent verification anchors (GitHub, GitLab, Bitcoin, Sigstore, dual TSA)
- ✓ SHA-256 hash-chained audit trail, tamper detection is automatic
- ✓ WORM-sealed evidence package, write-once, immutable storage
- ✓ Personal Document Seal, offline verification via your authenticator app
FOUNDING MEMBER
Your rate. Locked. Forever.
Reserve before September 1, 2026 and the price you pay today stays yours for life.
See Founding Member PricingDocuSign, Adobe Sign, and Dropbox Sign don't offer any of this. See the comparison →
Signed and sealed by Abundera Sign, the most provable e-signature platform.
Invalid or missing seal link.
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