Legally verifiable agreements for everyone

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Agreement

Proof

€6.49

Sales Agreement - iPhone 15 Pro

Contract #SACO-2847 · 26 February 2026

1Identity

2Signature

3Proof

Buyer

Verified

Julia Laurent

julia.laurent@email.com

Seller

Verified

Thomas Müller

t.muller@email.com

Agreement Terms

Buyer Signature

Seller Signature

How it works

Four steps to a signed, provable deal.

From a blank page to a binding agreement in minutes — no lawyers, no paperwork.

1
Create the contract
Start from a template or upload your own PDF, DOCX, or text.
2
Add the other party
Invite them by email — they don't need a SACO account to sign.
3
Pay €6.49
Stripe handles the transaction securely. Nothing starts until it clears.
4
Both sign with OTP
Tecalis dispatches one-time codes and records every signature.

Optional: Add identity verification or reinforced blockchain protection.

What's included

Everything you need for €6.49.

Simple. One price. No hidden fees.

Digital signature

Cryptographic, tamper-evident, bound to both signers.

Legal footprint

Evidence-grade trail a court would recognise.

Email notification

Clear updates at every milestone, for both parties.

Audit trail

Trackable event log for every contract, viewable in your dashboard.

Secure storage

Encrypted EU custody for 5 full years.

See pricing

Optional security add-ons

Extra layers for higher-stakes deals.

Recommended for higher-value goods (e.g. €5,000+).

Identity verification (KYC)

ID scan, selfie match, and liveness for both parties.

Reinforced blockchain registration

Permanent, publicly verifiable anchoring on Arweave.

Certified notificationComing soon

Registered-mail equivalent for delivering the contract.

High-security bundle

KYC + reinforced blockchain registration together at a reduced price.

Add-on details

Who it's for

Built for everyday deals that deserve proof.

Buyers

Marketplace buyers

Commitment on condition, terms, and delivery.

Sellers

Marketplace sellers

Avoid chargebacks and "never received" disputes.

Vehicles

Private car sales

Documented hand-off with mileage and condition.

Electronics

Electronics sales

Protect your €1,000+ phone or laptop trade.

Freelance

Freelancers

Scope, deliverables, and payment — signed by both.

Rentals

Landlords and renters

Small rental agreements, legally traceable.

Why you can trust SACO

Real legal infrastructure, not just a digital handshake.

Legally valid digital signatures

Compliant with EU eIDAS regulation.

Blockchain timestamping

Tamper-evident proof of exactly when it happened.

Identity verification option

Face-matched KYC when you want absolute certainty.

Secure legal contract custody

Encrypted storage with a 5-year retention guarantee.

Ready when you are

Secure your next deal now.

No subscription. One flat fee per contract. Ready in minutes.