Field evidence,
structured for institutional review.
A direct Android field evidence route. Visits, evidence, tasks and reviewer signals become attributable events, move through a Hub-aligned governance backend, and remain available for MRV, protected review and audit export.
One visual route from field envelope to export.
Capture at source
Field action is bound to named operator, scope, geo, timestamp and integrity seal.
Sealed record
The backend validates identity and scope, acknowledges the action and writes the governed event.
Reviewer routing
Events move into protected review, MRV projection or follow-up paths without becoming a verdict.
Audit manifest
Submitted visits reconstruct into hash-bound manifests with evidence metadata and chronology intact.
Field artefacts are structured through a Hub-aligned governance backend for protected review, MRV attachment and institutional export. The field app never approves, certifies, rates or finances.
Request operator-scoped access.
For institutions and field counterparts.
Access is by request. The app is not a public download; it is provisioned against named operators and scoped institutional contexts.
Access request received.
The request has been captured through the governed public access route. A Terra Vita Global team member can now review the submission and respond directly.
Four layers inherit the governance spine.
Android app
Operator-scoped surface for visits, evidence, tasks and completion records.
Backend API
Authenticates operators, validates scope, seals artefacts and acknowledges commits.
Hub event stream
Append-only, attributable chronology consumed by review, MRV and export.
Rules engine
Evaluates thresholds and patterns. The engine flags; it does not decide.
Five motions in one reviewer table.
| Motion | Event class | Institutional function | Reviewer sees |
|---|---|---|---|
| Visits | visit.opened | Creates a discrete visit record bound to operator, site, task, geo and time. | Reviewer console shows visit ID, operator, site and timestamp. |
| Evidence capture | evidence.captured | Attaches photo, file, note or form to the visit with an integrity envelope. | Reviewer console shows metadata, storage reference, capture context and seal/hash posture. |
| Tasks | task.completed | Closes the loop between institutional assignment and field execution. | Reviewer console shows task, expected evidence, completion status and response. |
| Reviews | review.* | Turns reviewer actions into attributable assurance events rather than informal commentary. | Reviewer console shows confirmations, queries, reviewer identity and queue status. |
| Escalations | escalation.signal | Flags configured thresholds or anomalies for institutional attention without issuing a verdict. | Reviewer console shows reason, severity, source events and non-decision boundary. |
The table replaces a product-tour pattern with a reviewer-grade matrix: what happened, which event was created, why it matters institutionally, and what the reviewer can inspect.
App events mapped to the Hub spine.
| Spine field | Populated by app events | Hub consumer | Reviewer inspection point |
|---|---|---|---|
| Identity | operator.login, visit.opened, review.* | Operator profiles, access scope | Named principal, role, organisation, revocation |
| Evidence | evidence.captured, form.submitted | Evidence item registry, protected storage | Metadata, form version, capture context, seal/hash |
| Routing | visit.submitted, review.queued | Reviewer queue, admin workload | Route key, severity, queue status, reviewer assignment |
| MRV | task.completed, form.submitted | MRV projection layer | Task-to-evidence closure and structured observations |
| Assurance | review.in_review, review.accepted, follow_up.requested | Reviewer console, event log | Reviewer trail, notes, status changes and chronology |
| Export | export.prepared, export.issued | Export register, audit reconstruction | Manifest snapshot, SHA-256 hash, issued-to record |
| Authority | escalation.signal, review.* | Authority boundary layer | Non-binding until institutional decision |