Blockchain Verified E-Signatures — $1 Per Envelope
Legally Binding Worldwide
Sign documents online in minutes — verified forever on the blockchain. Super user-friendly on any device.
No subscriptions, no per-user fees — just upload, sign, and send.
Per E-Sign Envelope
$1
- 1 sender + unlimited signers
- Blockchain verified & tamper-proof
- Certificate of Completion included
$1 per envelope · No subscription
Get StartedPer ID Check
$1
- Government-ID photo + live selfie face match
- Add to any envelope, or verify with no document
- Result anchored on Solana, tamper-proof
Optional add-on · Level 2 identity assurance · Runs privately in the signer's browser
Get StartedAre you an
Agent?
You have free unlimited E‑Sign. Login here →
All plans include blockchain verification at no extra cost.
How It Works
Five simple steps — no technical knowledge needed
1. Upload
Upload any PDF.
2. Add Parties
Name your signers.
3. Place Fields
Click to place fields.
4. Sign
Secure link + optional ID check.
5. Verify
Blockchain certificate.
See it in 18 seconds
Want extra assurance? Turn on the optional Biometric ID Check and signers verify their government ID with a live selfie before they can sign.
Install App
Add OnChainESign to your phone's home screen — no app store needed.
📱 Android (Chrome)
- 1. Open onchainesign.app in Chrome.
- 2.Tap the three-dot menu (top right).
- 3. Tap “Add to Home screen” (or “Install app”).
- 4. Tap Add — done!
🍎 iPhone (Safari)
- 1. Open onchainesign.app in Safari.
- 2.Tap the Share icon (bottom bar).
- 3.Tap “Add to Home Screen”.
- 4. Tap Add — done!
Biometric Signer Check
$1 / ID checkLevel 2 identity assurance — an optional upgrade
A standard signer confirms their email. Add Biometric Signer Check and, before they can sign, they photograph their government ID and take a quick live selfie. Your app reads the name on the ID, matches the face to the selfie, and confirms it belongs to the person you invited — giving you added confidence that the right person signed. It's an optional layer, not a legal requirement.
Government ID check
The signer photographs a valid photo ID and the name is read and matched to your invited signer.
Live face match
A quick live selfie is compared to the ID photo to confirm the same person is present.
Private by design
Everything runs right in the signer's browser — no third-party service ever sees their ID.
Four layers of built-in protection
Every signature is secured the moment it's made.
Tamper-Proof Fingerprint
Every document gets a unique digital fingerprint. Change anything after signing and it shows instantly — no way to hide alterations.
Network-Verified Timestamp
Thousands of independent computers confirm exactly when you signed. No single server to manipulate — the network is the witness.
Permanent Record
Once your signature is recorded on the blockchain, nobody can edit or delete it — not us, not you, not anyone. Your proof exists forever.
Anyone Can Verify
Anyone can check a signature is real using the public blockchain — no middleman needed, no trust required.
Why This Matters
Verifiable Record
A blockchain timestamp gives you independently verifiable proof of when a document was signed and that it hasn't changed since.
In Disputes
Hash comparison instantly proves whether a document was altered after signing.
For Compliance
Meets ESIGN Act and UETA requirements for electronic record retention.
Peace of Mind
Your proof lives on the blockchain — not on a company's server that could go down.
Signatures you can actually prove
Every document is sealed on the Solana blockchain the instant it's signed — tamper-proof, timestamped, and independently verifiable by anyone, forever. Legally binding under the ESIGN Act, UETA & eIDAS in 50+ countries.
$1
Per envelope
<1s
Blockchain confirmation
50+
Countries recognized
100%
Tamper-proof
What Sets Us Apart
Traditional platforms trust their own servers. We trust the blockchain.
| Feature | Traditional E-Sign | OnChainESign |
|---|---|---|
| Record storage | Vendor servers | ✅ Blockchain (permanent) |
| Tamper evidence | Internal audit log | ✅ Cryptographic proof on-chain |
| Public verification | ❌ Trust the vendor | ✅ Anyone, anytime |
| Timestamp authority | Vendor's servers | ✅ Network-verified timestamp |
| Multi-party signing | ✅ | ✅ With signer tracking |
| Signer identity check | Costly third-party add-on | ✅ Built-in Biometric Signer Check |
| Pricing | $15–$45/mo | ✅ $1/envelope + $1/ID check |
Legally Binding Worldwide
Recognized under e-signature laws in 50+ countries
United States
ESIGN Act & UETA
European Union
eIDAS Regulation
United Kingdom
ECA 2000
Canada
PIPEDA & UECA
Federal-grade security
Bank-level encryption
Title & closing ready
Sign from anywhere
Built for Every Industry
Real Estate
Contracts, leases, disclosures
Legal
NDAs, retainers, settlements
Business
Agreements, SOWs, offers
Finance
Loans, compliance, openings