{"id": "c683", "title": "C683 — Reconstruct the civil alternating continuation", "filename": "C683.md", "role": "Research action", "step": 683, "sha256": "1707d71aef81d51c6507da46c223f451e6b7123faf8d6fa374fe900b3ef7768b", "bytes": 1258, "origins": ["C480–C1634/Research_Cycles/C0632_C0731/journal.json#C683"], "download": "/sources/1707d71aef81d51c6507da46c223f451e6b7123faf8d6fa374fe900b3ef7768b.md", "format": "md", "derived": true, "tags": ["Rounded", "Mirror / 529"], "excerpt": "Does the native30|690 cell close consistently across the missing year zero?", "content": "# C683 — Reconstruct the civil alternating continuation\n\n## Question\n\nDoes the native30|690 cell close consistently across the missing year zero?\n\n## Inputs\n\n```json\n{\n  \"civil_nodes\": [\n    \"1446BC\",\n    \"1416BC\",\n    \"726BC\",\n    \"696BC\",\n    \"6BC\",\n    \"AD25\"\n  ],\n  \"elapsed_coordinate\": \"BC B -> 1−B; AD A -> A\"\n}\n```\n\n## Sources\n\n```json\n[\n  \"Supplement A §5.2\"\n]\n```\n\n## Opened utc\n\n2026-09-28T01:12:48.529185+00:00\n\n## Results\n\n```json\n{\n  \"elapsed_coordinates\": [\n    -1445,\n    -1415,\n    -725,\n    -695,\n    -5,\n    25\n  ],\n  \"gaps\": [\n    30,\n    690,\n    30,\n    690,\n    30\n  ],\n  \"total\": 1470,\n  \"direct_civil\": 1470\n}\n```\n\n## Finding\n\nThe admitted continuation preserves30|690|30|690|30 and totals1470 under civil BC+AD−1. Its comparison terminals retain their source roles. The rounded mirror convention is a separate coordinate rule and is not substituted here.\n\n## Reassessment\n\nRelate the source’s750 civil brackets and final three-year completion.\n\n## Checks\n\n```json\n{\n  \"gaps\": true,\n  \"closure\": true\n}\n```\n\n## Closed utc\n\n2026-09-28T01:12:48.529476+00:00\n\n## Record provenance\n\nExact record hash: `b6d0d5c514db2773c492b86870cea98b88ed11072baf93ebf603ba450c8fb770`\n\nSource journal: `Research_Cycles/C0632_C0731/journal.json`", "journalDownload": "/sources/f0643e934c6a7443706351fa40040684d915ed0ae25c0f9188a4c4dba12814ff.json"}