The method, weighed in the open.
Everything behind the calibrated likelihood ratio — the method, the open benchmark, the reference data, and the API. The app itself lives at verity.codes.
Start where you fit: scientists → the method · developers → use Verity · examiners → why it exists.
The method
How a scan becomes a calibrated likelihood ratio — leveling, signature extraction, alignment, congruent matching regions, and calibration — step by step on real marks.
Why Verity
What was missing: one calibrated, explainable, open method across mark types, where the statistics decide and the cost is characterized — not a black-box match.
The open benchmark
Frozen, source-disjoint splits scored on Cllr, calibration loss, and AUC. A leaderboard anyone can submit to, with a downloadable replication kit.
The data catalog
Browse the forensic scans behind the references — striated, impressed, and toolmark — content-addressed and downloadable as raw X3P.
References
The foundational methods, standards, benchmark datasets, and calibration literature Verity builds on, with relevance notes.
Scientific lineage
The published research Verity operationalizes — automatic bullet-land matching, Congruent Matching Cells, and the open-data ecosystem — plus the downloadable validation report.
Use Verity
Quickstart, core concepts (LR, Cllr, CMR), the REST API and reproducibility, the X3P codec, and the system architecture.
API reference (opens in new tab)
The interactive OpenAPI reference for the comparison API — endpoints, schemas, and live request examples.
One project, five hosts
Verity is one open codebase deployed across five subdomains — each does exactly one job.
- verity.codesThe compare workspace — pick or upload two marks, get the calibrated likelihood ratio.
- app.verity.codesVerity Studio — a full-screen, glass-box view of every pipeline stage on a real comparison.
- docs.verity.codesyou are hereThis site — the method, validation, benchmark, data catalog, references, and guides.
- api.verity.codes (opens in new tab)The comparison API — upload X3P scans, get a ComparisonReport. Interactive OpenAPI reference.
- data.verity.codes (opens in new tab)The data API — the scan catalog, frozen benchmark splits, leaderboard, and replication kits.