Sovereign data: host a node of the Quebec public registry.

What you will see

Your data, your contracts and your public commitments sit today on infrastructure you do not control. In 45 minutes we show another way: a shared registry, hosted by its members, on their own hardware, protected by cryptography designed to resist quantum computers.

• A node that starts with one commandOn an ordinary machine, on your premises. What it downloads, what it verifies, what it costs to run, and what is not solved yet.
• What it containsA complete copy of the registry: hashes of public commitments, each with a short technical label, and their signatures.
• What is not written to itNo personal data is written to it: records stay with you, and the registry carries them by their hash, with a short technical label. Today that rule is applied by the application; enforcing it in the chain is planned.
• What "keeping your copy" meansYour copy sits on your hardware: neither Paraxiom nor a foreign cloud provider can take it away from you. And because every member keeps their own, a change after the fact shows: the copies no longer match.

What the registry lets you prove

The node is the means. What counts is what an organisation can prove without the proof resting on a single one of them.

• Decisions and documentsA resolution, a notice, a report: its hash is recorded with the date, and the document stays with you. This is the part already demonstrated on the test network.
• Public contracts, with the oracleA verification service runs six automated checks on a deliverable: API health, code coverage, static analysis, deployment verification, visual regression, load. Each result is recorded with the hash of the raw evidence, the verdict, a score and the commit. When all six pass, the milestone is marked complete. And a payment is authorised only if a human signs and an authorised oracle signs: neither is enough alone.
• SoftwareDated proof, verifiable by a third party, that a given version passed a given analysis before it was deployed.
• Later: devices and citizensA device or a citizen co-signing with their own post-quantum key. Not offered yet.

These modules are in the test network's runtime, with their tests; no application calls them yet. See the interactive demonstration (in French): the checks run, a failed check blocks the payment, and an edited copy is exposed.

Why a node

Hosting a QuantumHarmony node on your own hardware means holding a complete copy of the registry. Sovereignty is not a contract clause; it is the copy you keep. The first nodes are in Quebec; seats in Belfast and Germany are sought, because a registry no single member should be able to alter needs members who do not depend on each other.

A second step, reserved for institutions with a mandate, will come later: co‑signing public commitments. It is not on offer today, and the session will say so plainly.

Who it is for

• Technology SMEs and suppliersWho deliver to public buyers and want to prove what they delivered.
• Cities, crown corporations, public networksWho record commitments and want any later change to show.
• Professional orders and trust servicesWhose signature already carries weight and who want to bring it to a shared registry.
• Universities and labsWho want a node to observe, measure and criticise.

Registration

Three fields. Your mail client opens with the registration prefilled; send it as is. The Google Meet link comes back by email.

Common questions

Is it free?

Yes. The session, the node software and its source code all are.

Do I need technical skills?

Not for the session. To host a node afterwards: one IT person and a machine that stays on.

What is QuantumHarmony?

A blockchain with post‑quantum signatures developed by Paraxiom, designed to record public commitments by their hash. The test network has run since December 2025; its current version was restarted on July 4, 2026. It is a test network, not a production system.

Is there a token, an investment, a promised return?

No. The test network uses a test unit for transaction fees; it has no value and is not sold. No investment, no return, nothing is promised.

What happens to my registration?

It lands in a mailbox, is used to send you the link and the reminder, and is shared with nobody.