Secure your decisions before they are challenged.
Verify a digital fingerprint – Codex proof of integrity
Any proof issued via Codex can be publicly verified. Each digital fingerprint is recorded in an independent, timestamped registry accessible at any time to confirm the integrity of a document.
Access the verification toolWhy verify a Codex?
Verifying a Codex digital fingerprint makes it possible to confirm that a specific document existed at a given date, without any content storage. It is independent, timestamped proof of integrity that is publicly verifiable.
It allows you to ensure:
- the existence of a proof
- its registration date
- the integrity of the recorded fingerprint
Two verification methods
1. Verification by identifier
If you have the Codex identifier, you can directly consult
the corresponding record in the public registry.
This method confirms the existence and the date of issuance.
2. Verification by fingerprint
If you possess the original document, you can recompute
its digital fingerprint and compare it with the one recorded.
Any difference would indicate a modification of the content.
Detailed verification process
When a Codex is issued, a unique digital fingerprint is generated from the exact content of the submitted file.
This fingerprint is then recorded in a timestamped append-only registry. Records cannot be modified or deleted.
Verification consists of consulting this public record and confirming that the fingerprint matches the one calculated from the presented document.
If both fingerprints are identical, this confirms that the document already existed on the registration date and has not been altered since.
Independence and transparency
The verification registry is publicly accessible. It contains no data related to the content of documents, only digital fingerprints and their registration dates.
No file storage is performed. No artificial intelligence is involved in the verification. The process is deterministic and reproducible.
The transparency of the registry allows any party to exercise independent control.
Real-world usage examples
In many cases, verifying a Codex helps avoid unnecessary tension.
Example: a quotation sent to a client is challenged several weeks later. Rather than entering into a contradictory exchange, the issuer can simply provide the associated Codex identifier. Public consultation confirms the registration date of the transmitted version.
Another situation: an internal decision is questioned afterwards. Verification makes it possible to establish factually that a specific document existed at a given date, without debate over its content.
In these common cases, the mere possibility of verification is often enough to clarify the situation.