Journal · two witnesses, one page

What this site said, and where the chain stood.

Each time the company passes a checkpoint, the pages change and the change is sealed: the fingerprint of every page is written into a manifest, the manifest’s fingerprint is settled on the chain as a receipt, and the receipt is anchored in Bitcoin. And every morning, whether or not anything changed, the tip of the chain itself is stamped into Bitcoin. A stranger can verify both without trusting Recognitium.

Versions of this site

2026-09-05First version of the redesigned site: the tenses set right, the tier stamped on the specimen, the Instrument and Journal pages, the AI Act door, the films lightened, a social image and structured data on every page, the console dressed like the site, the map cut to fourteen pages.
Manifest site-2026-09-05.manifest.json · SHA-256 7ff830b7d9142518…b3064ba0 · 27 files · receipt and Bitcoin proof pending: the manifest is written and fingerprinted, its seal on the chain is the founder’s next command.

2026-09-05First version of the redesigned site, live on www.recognitium.com since 5 September 2026: fourteen pages, the Instrument and Journal pages, the AI Act door, the console dressed like the site with a password reset and social doors, a social image and structured data on every page.
Receipt DG-af4683ac8ece44f397cebc500a895862 · sequence #147,028 · manifest site-2026-09-05.manifest.json (SHA-256 8d0fc94d848c78c8…) · Bitcoin proof site-2026-09-05.manifest.json.ots

How to check a version

Download the manifest of the version. Recompute its SHA-256. Paste the receipt ID at /verify: the engine answers and your browser re-derives the chain tip itself. For the Bitcoin proof, run the free OpenTimestamps client against the manifest’s proof file, as described below. The manifest lists every page with its own fingerprint, so any single page can be checked against it.

This page is not part of the manifest it describes, since it must carry the receipt that the manifest produces.

The anchors · a witness we do not own

Every day at 09:00 Paris time the current tip of the receipt chain is written to a small file and its fingerprint is submitted to the OpenTimestamps calendars, which fold it into a Bitcoin transaction. A few hours later the proof is final and names the block. What this gives a stranger: the chain tip of a given day existed no later than that Bitcoin block. Since every receipt is committed under the tip, every receipt sealed before that day inherits the bound. Recognitium cannot move a receipt later than the block, and cannot rewrite the chain behind a tip that Bitcoin has seen. The whole mechanism costs nothing; the calendars pay the Bitcoin fee.

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Verify an anchor, with no account and no trust in us

Install the free client, then verify the proof against the anchored file. The verification needs a Bitcoin node; without one, the info command still shows the attestation and, once the proof is upgraded, the block height.

pip install opentimestamps-client
ots verify 2026-09-05_seq145814.tip.json.ots
ots info 2026-09-05_seq145814.tip.json.ots

First anchor: 5 September 2026, sequence 145,814.