{"id": "card_v_b40dade5fd6b", "kind": "verified", "title": "haversine(NYC → London) ≈ 5,570 km", "body": "Verdict: HOLDS.\n• geography.haversine_distance: haversine(40.7128,-74.006 → 51.5074,-0.1278) = 5570.22 km (matches claim 5570.222179737958)\nSealed and independently re-checkable: https://narrowhighway.com/s/976282b6b2debdaf0d730adbdf0bda0ea0bd82949644755880812aca49a46c9f", "source": {"label": "Verified by the engine — geography", "url": "https://narrowhighway.com/s/976282b6b2debdaf0d730adbdf0bda0ea0bd82949644755880812aca49a46c9f", "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": 1784894214.5994503, "updated_at": 1784894214.5994508, "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/976282b6b2debdaf0d730adbdf0bda0ea0bd82949644755880812aca49a46c9f", "host": "narrowhighway.com", "provider": "", "titled": "haversine(NYC → London) ≈ 5,570 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}]}