Canonical spine
The Terra Vita Evidence Stack.
A single, governed pathway that turns raw field observation into institution-grade evidence integrity scores — and stress-tests how that evidence fails. Each surface does one job; the Bridge Layer connects them under one governance model.
The evidence spine
From observation to decision.
- FieldTrace — operator-attributed field capture: actor, method, time, place.
- NAE — turns raw monitoring data into attributable, reviewer-ready evidence chains.
- Hub / Console — governance spine, reviewer routing and evidence intake.
- GEFI — scores evidence integrity 0–100 and Class A–F across six pillars.
- ERS — simulates how the evidence spine collapses under stress.
- Decision environments — financing, validation and portfolio decisions.
Three surfaces
Attribute · score · simulate.
NAE
Attribution Engine
Raw monitoring data from any tool or partner becomes attributable evidence chains.
Open NAE →ERS
Reconstruction Simulator
Simulates evidence-spine collapse under governance, attribution and partner stress.
Open ERS →The connective tissue
Bridge · Hub · FieldTrace.
Bridge
Integration Spine
The governed layer that connects every surface and enforces the rules.
Open Bridge →FieldTrace
Field Surface
Constrained by the Hub; feeds NAE and the Bridge, never GEFI directly.
Open FieldTrace →Who it serves
Built for institutions.
DonorsMultilateralsGovernmentsNGOs & partnersValidation bodiesInvestment committeesAuditorsProgramme designers
Status
v1 in structured development.
GEFI v1 components are in structured development; pilot assessments begin Q3 2026. The Evidence Console and Bridge integrations are being hardened against live programme data.
Cross-links