Reproducibility of Verification.

A cornerstone of evidentiary reliability is reproducibility: the ability for independent parties to verify the same fact and reach the same conclusion. The Digital Witness method satisfies this requirement through deterministic cryptographic operations.

Verification consists of recomputing a cryptographic fingerprint from the presented file and comparing it to the fingerprint recorded at the time of witnessing. The process yields a binary outcome: the fingerprints either match or they do not. There is no discretionary judgment, scoring, or probabilistic interpretation involved.

Verification does not require access to Witnium systems, trust in the issuing organisation, or proprietary tooling. Any party may perform verification using standard cryptographic utilities — ensuring consistency across time, geography, and institutions.

Original File + Certificate
         │
         ▼
Independent Hash Computation
         │
         ▼
   MATCH / NO MATCH
(Same result for all parties)

Verification under the Digital Witness method is deterministic and reproducible. Any independent party using the same digital file and certificate will obtain the same verification result.