Atestan Atestan

See the model without mistaking a demonstration for real proof

A demonstration helps you understand how the model works. It is not evidence that any real setup has reached a level of proof. The one on this page is scripted and labelled as such, as is the shorter walk-through on the verification page. Neither runs real cryptography, and neither is presented as a verification, because a page that looks like it verifies is worse than no page.

What to look for

No simulated certainty

A polished screen must not suggest that a capability exists in production when it does not. What is shown only as an idea is labelled as such, and nothing on this page runs real cryptography, so it stands for the model, not for independent proof.

What to watch during a demonstration

The useful question during a demonstration is not whether the screen turns green. It is: what exactly has the system proved, and what has it deliberately not claimed? That is the discipline this product is built to bring to a critical message, and it is what the three cases below are arranged to show.

This is a scripted demonstration

Nothing on this page performs live cryptography. The engine is built and tested but has not yet been ratified by an external cryptographer, and no production registry is anchored. What you are watching is an exact walk-through of what the ladder reports in each case — with the fictional company “ABC SAS”. We would rather show you a labelled demonstration than a convincing illusion.

Watch a verification run

The same message, “our bank details have changed”, in three situations that differ only in what the sender can prove. Pick one and watch the steps run.

Your accounts-payable inbox

Company X · billing@company-x.example

Change of bank details, invoice 2026-0431

Following a change of bank, please update our details for all future payments. New IBAN below. Kindly confirm once done, the next invoice falls due Friday.

Email checks (SPF / DKIM / DMARC) PASS, the domain is genuine

  1. Idle, press “Run the verification”.

The five steps

  1. Signed by the company itself

    Signature

    not checked

  2. Addressed to your organisation

    Who it was for, on the day it was sent

    not checked

  3. Receipt confirmed

    Confirmed receipt

    not checked

  4. Action not carried out

    Closing the record / proving it did not happen

    not checked

  5. Locked into a public record no one controls

    Public anchor, when the record closes

    not checked