{"layer": "product", "version": 1, "external_litters": {"url": "/api/product-core/litters", "human_url": "/registry/litters/", "method": "GET", "filters": {"country": "exact source country label", "breed": "source breed slug", "source": "pedigreedatabase", "page": "positive integer; 100 rows per page", "dataset_sha256": "repeat first response version on later pages; 409 means restart"}, "identity": ["source_system", "source_breed_slug", "source_external_id"], "dates": "expected_date is a reported due date; it is never inferred birth_date", "status": "External planned records are unverified source reports, not our sale announcements or available puppies.", "parent_refs": "Source positions are retained; parent roles remain unknown when not stated."}, "dogs": {"evidence_url": "/api/product-core/dogs/{id}", "dates": "source_checked_at is an entity observation; card/list/mention times are distinct.", "source_evidence": "Selected field source/ref/date and value fingerprint; absent input hash is unknown.", "identity": "legacy_merge_unresolved records and relationships are not verified pedigree proof."}, "completeness": "No complete global animal or litter coverage is claimed. Follow original source links."}