Check a record yourself

Three tools: two in your browser with nothing to install, one on your own machine. Pick the one that matches what you have in hand.

arcaeon.io/stampdrag and drop

Stamp a file

Free, and nothing to install. Drop a file on the page, or choose one. Your browser computes the file's fingerprint and only the fingerprint is sent, so the file never leaves your machine. It records that a file existed in exactly that form by that time. It does not record who made it.

How to prove a file is yours

Stamp a file

arcaeon.io/verify-receiptdrag and drop

Verify a receipt

Paste or drop a receipt JSON file, or a whole class of them. Everything runs in your browser: the digest is recomputed with SHA-256, and nothing is uploaded anywhere.

Receipts for a class

Verify a receipt

arcaeon reconcileon your machine

Reconcile two records

Reconcile two tapes, the agent side's and the tool side's, on your own machine with arcaeon reconcile. The answer is one of MATCHED n of n, MISSING at k, ALTERED at k, or COULD NOT LOOK. It is not hosted today.

MATCHED between two tapes one party wrote is consistency, not independence.

Reconcile two records

Want it inside your AI instead?

The same checks run on your own machine after one install.

Get it for your AI