History

Beta. GET /v1/companies/{scheme}/{value}/history returns retained observations for a watched company.

Planned base: https://api.telltale.actuans.com. Not live. Bearer token required. Public scheme is SG_UEN.

GET /v1/companies/SG_UEN/12345678A/history
Authorization: Bearer <api_token>

The successful body is { "observations": [...], "source_health": {...} }.

History is immutable and includes correction/supersession lineage. Identical source input is idempotent: it does not manufacture a new logical observation.

An empty history returns HTTP 404 with error.code: "not_found". The company must be watched or the response is 403 company_not_watched.

This is retained monthly baseline history, not a live register walk.