{"id": "c1237", "title": "C1237 — Derive the three Moses cycle spans from the full path", "filename": "C1237.md", "role": "Research action", "step": 1237, "sha256": "5cd82706dd0291af8c124473863bd2e713fcc50b2f89476016667b5e3f176156", "bytes": 1071, "origins": ["C480–C1634/Research_Cycles/C1132_C1431_Recovered/journal.json#C1237"], "download": "/sources/5cd82706dd0291af8c124473863bd2e713fcc50b2f89476016667b5e3f176156.md", "format": "md", "derived": true, "tags": [], "excerpt": "How do the430 and490 families share this source chronology?", "content": "# C1237 — Derive the three Moses cycle spans from the full path\n\n## Question\n\nHow do the430 and490 families share this source chronology?\n\n## Inputs\n\n```json\n{}\n```\n\n## Sources\n\n```json\n[\n  \"C1236\",\n  \"File51a §7A.1\"\n]\n```\n\n## Opened utc\n\n2026-09-28T05:40:43.642062+00:00\n\n## Results\n\n```json\n{\n  \"cycle_family\": {\n    \"path\": \"model/Moses_cycle_family.json\",\n    \"sha256\": \"383622af80e02a860a556b78cab0e461136ba9ff53e4266e2f32899288d61ab4\",\n    \"bytes\": 479\n  },\n  \"spans\": [\n    2580,\n    2450,\n    1960\n  ]\n}\n```\n\n## Finding\n\nThe complete path yields2580=6×430,2450=5×490 and1960=4×490. Their shared chronology and initial130/490 blocks explain the correspondence as one family.\n\n## Reassessment\n\nTest exactly what the130 bridge does and does not determine.\n\n## Checks\n\n```json\n{\n  \"cycles\": true,\n  \"ordered_subtractions\": true\n}\n```\n\n## Closed utc\n\n2026-09-28T05:40:43.642740+00:00\n\n## Record provenance\n\nExact record hash: `1fd6b282ac7dd6df3e1b48b42b04e4d1d9e505c9e4a5d87046bb01a7a0dfb7aa`\n\nSource journal: `Research_Cycles/C1132_C1431_Recovered/journal.json`", "journalDownload": "/sources/6adb632ce171623c2bce60d7ed58ae319ccb379cf76b751c0a477c1742fd348c.json", "evidenceLinks": [{"id": "d-383622af80e02a86", "title": "model/Moses_cycle_family.json"}, {"id": "d-d8aa38afb2a2df8f", "title": "File 51a"}]}