Verification Levels

Publisher: Global.Church · Created: 2026-05-06 · 4 concepts

https://ontology.global.church/core#VerificationLevelScheme

A four-tier ladder ranking the evidence-strength behind an attestation or reachedness-assessment result. V1 is desk research only; V4 is verified by an on-the-ground partner with named field workers. Used as an orthogonal axis to source-specific status values: a JP-scale-1 reading can carry V2 verification on one segment and V4 on another. Provides a cross-source confidence signal usable by Watch List eligibility logic and by consumer apps that need to surface evidence quality.

Code	Label	Definition
`VL-V1`	V1 — Desk Research	Desk research only — values derived from public sources (JP, IMB published data, encyclopedias, web research) without confirmation from a field source. The default verification level for bulk-imported reference data.
`VL-V2`	V2 — Single Source Field Input	One field-credible source has weighed in — a missionary report, a partner-org survey, a single in-country worker. Stronger than desk research; not yet corroborated.
`VL-V3`	V3 — Multi-Source Corroboration	Two or more independent field sources agree on the value. The minimum bar for inclusion on most Watch Lists. Corroboration may be cross-organizational (two agencies report independently) or internal (multiple workers within one agency).
`VL-V4`	V4 — Verified On The Ground	A named on-the-ground partner with active field workers stands behind the value. The strongest verification level — typically required for action-oriented Watch List entries that drive resourcing or deployment decisions.