{"id": "c497", "title": "C497 — One shared tail links12026 and14726", "filename": "C497.md", "role": "Research action", "step": 497, "sha256": "e69adb6b86ddb2a7f5c209235ff7e1352d0a0527b247e7e5861b0468ba7525aa", "bytes": 1121, "origins": ["C480–C1634/Research_Cycles/C0482_C0531/journal.json#C497"], "download": "/sources/e69adb6b86ddb2a7f5c209235ff7e1352d0a0527b247e7e5861b0468ba7525aa.md", "format": "md", "derived": true, "tags": [], "excerpt": "How does the documented1400 leg connect the two backbone anchors?", "content": "# C497 — One shared tail links12026 and14726\n\n## Question\n\nHow does the documented1400 leg connect the two backbone anchors?\n\n## Inputs\n\n```json\n{\n  \"Conquest\": 1406,\n  \"Nativity\": 6,\n  \"primary_reversed_sum\": 10620\n}\n```\n\n## Sources\n\n```json\n[\n  \"File52c §§3.3–3.4\"\n]\n```\n\n## Opened utc\n\n2026-09-27T22:42:47.572297+00:00\n\n## Results\n\n```json\n{\n  \"tail\": 1400,\n  \"reversed_tail\": 4100,\n  \"net_anchor_change\": 2700,\n  \"Conquest_backbone\": 12026,\n  \"Nativity_backbone\": 14726,\n  \"Nativity_span\": 14720,\n  \"E_span\": 16000\n}\n```\n\n## Finding\n\nAppending the shared1400 leg changes the reconstructed endpoint by4100−1400=2700. Both primary paths therefore continue together from12026 to14726. The backbone’s14720 span then expands to16000.\n\n## Reassessment\n\nIdentify the decimal gain law that explains the990 and2700 increments.\n\n## Checks\n\n```json\n{\n  \"continuation\": true,\n  \"expansion\": true\n}\n```\n\n## Closed utc\n\n2026-09-27T22:42:47.572502+00:00\n\n## Record provenance\n\nExact record hash: `a7622ff34f06565ea4ce69b1787c1e6ffff17cb40d448a0b624d37c4e3f21ac9`\n\nSource journal: `Research_Cycles/C0482_C0531/journal.json`", "journalDownload": "/sources/6eaeccad4734eff2f6ac20ba847967877b944f9758c53c712ac8b5be2ddf61eb.json", "evidenceLinks": [{"id": "file52c", "title": "File 52c"}]}