Get paid for the work you do.
TrustChain turns an agreement into a signed, timestamped record that is hard to dispute, so when a client won't pay, you have something stronger than a screenshot or a promise.
Your negotiation stays end-to-end encrypted, so even we can't read it. Anchor a signed record and its fingerprint goes into a public Polygon transaction that no one can rewrite. Not the other party. Not us.
What a protected record looks like
Agreement Record
Rent agreement — Vancouver, Canada
On-chain fingerprint
keccak256: 0x71c1ab8f…be7d136
Anchored on Polygon. Anyone can look up the transaction and its date.
The Problem
There's a global standard for everything — except a deal between two people.
In 2026, you can verify a payment in seconds, track a parcel across the planet, confirm a passport at a border. The world runs on standards. But a deal between two people — the kind that decides whether you get paid for a month of work — still lives as a screenshot, a text thread, and a hope that the other side remembers it the way you do.
Most agreements sit as files inside platforms you don't control. They can be edited, deleted, or replaced — often without a trace. And when money is on the line and the story suddenly changes, there's no independent record to point to. It comes down to your word against theirs. That isn't proof. That's a coin flip.
- ✕Files can be edited or replaced with no trace
- ✕Platform access can be revoked or restricted
- ✕Screenshots are easy to dispute
- ✕Disputes become word against word
How It Works
From first message to signed proof.
01
Negotiate privately
Work out the terms in a chat that's end-to-end encrypted. The keys live on your devices, not on our servers, so only the people in the chat can read it. Not even us. Trust starts here: a private room no one else can walk into.
02
Create the record
Both parties lock in the terms. The agreement is structured, timestamped and linked to your TrustChain account, and neither side can sign until they verify their identity through Sumsub. No anonymous handles hiding in the dark.
03
Sign and lock
Each party signs after verifying their identity. When the signed record is anchored, a fingerprint of its ID, title, terms, amount and the parties' account IDs is written to Polygon. Change a single character and the fingerprint comes out completely different.
04
Verify at any time
Anyone with the record's public link can open it without an account and see whether both sides signed, and when. If it was anchored, they can check its fingerprint and date on Polygon without trusting us.
Built-in AI Advisor
Understand what you're signing — before you sign it.
Paste a clause or describe your deal. The AI explains it in plain language, flags hidden risks, and rewrites weak wording — right inside TrustChain.
"Late payment penalty of 2% per month" — this clause compounds monthly. On a 3,000 USD invoice unpaid for 90 days, you'd be owed about 183 USD extra…
You · Follow-up 1
What if the client is in another country?
Explain any clause
Plain-language breakdown — know what you're agreeing to.
Catch hidden risks
Ambiguities and missing protections — flagged before you sign.
Ask, refine, revisit
2 free follow-ups per answer, your last 50 conversations saved to History.
Try it free — 3 AI Advisor requests every month, no card required.
Try It Yourself
Change one character, get a different fingerprint.
Real keccak256 hashing, live in your browser. Edit the right side and watch the fingerprint change.
This demo runs entirely in your browser. Nothing here is uploaded or stored. Real records use the same keccak256, but over the record's ID, title, terms, amount and the parties' account IDs together, so pasting an agreement's text here will not reproduce its fingerprint.
TrustScore
Reputation you can actually see.
Every person on TrustChain carries a TrustScore, built from verified actions: a confirmed email, an identity check, and agreements completed and anchored. Other members can see it, so honest people build a record that speaks for them.
How the score is built
Earned through verified actions, not bought.
A verified email, a completed identity check, and every agreement you finish and anchor. Completing the whole set earns a final bonus.
Account created, nothing verified yet
Identity verified, or first agreements on record
Verified identity and a real record of completed deals
A long record of completed, anchored agreements
The full trust set — identity, completed deals, anchored proofs
Know who you're dealing with
When you open an agreement in your account, you can see the other party's TrustScore and tier. A verified, high-score counterparty is a signal you can rely on, so you are not dealing with total strangers in the dark.
Honesty is rewarded
Every completed or anchored agreement raises your score, up to a cap. Verifying your identity unlocks higher tiers. Over time, your record becomes your reputation, and it follows you.
Why It Matters
When disputes arise, proof matters.
The value of a protected agreement isn't felt until something goes wrong. The day a client decides not to pay, everything flips. The side holding a signed record has a real advantage: a record that's clear, timestamped and accepted by both sides, which doesn't bend to whoever argues louder.
The record shows that both sides signed, and when, and each party keeps a copy of the exact text. Once anchored, its fingerprint is dated on a public blockchain.
- ✓Tamper-evident fingerprint for every anchored record
- ✓Anchored proof lives on Polygon, outside our control
- ✓Either party can share the record without the other's help
- ✓Every signature timestamped and logged
Plans
Start free. Upgrade when it pays off.
Every plan includes encrypted negotiation and the private registry.
Free
$0
1 protected agreement and 3 AI requests a month, no card.
Pro
$19/mo
20 agreements, 20 anchors, 50 AI requests.
Elite
$49/mo
100 agreements, 100 anchors, 300 AI requests.
Guides
When the deal goes sideways, start here.
Plain answers to the questions people type at eleven at night: what to do when the work is done and the invoice is ignored, what to get in writing first, and how to prove what was agreed.
Client won't pay for finished work. What can I do?
Finished the job and the client went quiet? Five steps for today: gather your record, send a dated demand, pick your next move, know when to stop chasing.
What Should a Contractor Get in Writing Before Starting a Job?
Five things a contractor should put in writing before starting: scope, price, change orders, deadlines, exit terms. Copy-paste example lines included.
How Do I Make a Digital Agreement Without a Lawyer?
Five things every freelance agreement needs, an honest comparison of email, e-sign tools and TrustChain, and a free plan to protect one deal a month.
How do I prove what was agreed?
Verbal deal, text thread, email, signed PDF, e-signature, fingerprinted record: what each proves about content, time and identity, and where each fails.
The client says that's not what we agreed. What now?
Client says that's not what we agreed. The first reply to send, how to preserve the approval message, and how to keep the client without giving up scope.
How do I timestamp a document to prove it existed on a date?
Hash it, publish the hash, keep the original. A plain guide to proving a document existed on a date, how each method compares, and how to check by hand.
Also: the FAQ and TrustChain vs DocuSign vs a lawyer.
Every agreement deserves
a source of truth.
Your work is real. Make the proof just as real.
Protect your first agreementTrustChain — the registry of record for digital agreements