{"id": "card_v_e9a9cfd0bf9a", "kind": "verified", "title": "haversine(0,0 → 0,1°) ≈ 111.19 km", "body": "Verdict: HOLDS.\n• geography.haversine_distance: haversine(0.0,0.0 → 0.0,1.0) = 111.19 km (matches claim 111.19492664455873)\nSealed and independently re-checkable: https://narrowhighway.com/s/130e2eba76664f1d288b31f139a31cf6966911c993e6fc5b4c57e08cebda4b28", "source": {"label": "Verified by the engine — geography", "url": "https://narrowhighway.com/s/130e2eba76664f1d288b31f139a31cf6966911c993e6fc5b4c57e08cebda4b28", "ref": "", "domain": "geography", "authority_tier": "engine"}, "shelf": "geography", "box": "verified", "bands": ["verified", "geography", "HOLDS"], "connections": [{"to_card_id": "card_k_spine_created_order", "relationship": "part_of", "evidence": "a verified seed of the created order (geography)"}, {"to_card_id": "card_works_haversine", "relationship": "demonstrates", "evidence": "A worked demonstration in the same field (geography)."}], "author": "engine", "created_at": 1784892568.0406172, "updated_at": 1784892568.0406177, "visibility": "public", "lifecycle_stage": "public", "volatility": "durable", "surface": "secular", "generated": false, "presentation": {"glyph": "•", "kind_label": "verified", "by": "Verified by the engine — geography", "authority": "engine", "posted": "1 month ago", "standing": "", "link": {"url": "https://narrowhighway.com/s/130e2eba76664f1d288b31f139a31cf6966911c993e6fc5b4c57e08cebda4b28", "host": "narrowhighway.com", "provider": "", "titled": "haversine(0,0 → 0,1°) ≈ 111.19 km", "waybill_line": "", "reach": "", "embed": ""}}, "neighbors": [{"id": "card_k_spine_created_order", "title": "The created order — the science of the floor", "relationship": "part of", "why": "a verified seed of the created order (geography)", "href": "/card/card_k_spine_created_order", "resolved": true}, {"id": "card_works_haversine", "title": "The great-circle distance from New York to London", "relationship": "demonstrates", "why": "A worked demonstration in the same field (geography).", "href": "/card/card_works_haversine", "resolved": true}]}