C247 — No intermediate endpoint matches the held Noah/Shem/Flood register

23 September 2026 · Step 42 of 60, continuing C205.

The seven intermediate centers are exactly 1905–1911. None appears in C01’s 48-row ordinary MT/SP Noah/Shem/Flood register. The six final Flood matches therefore do not turn the process into a wholly sourced three-stage ladder.

This negative result has a fixed search domain. It neither asserts absence from all biblical chronology nor opens a new post-Flood search in the current step. The correct current status is: native input, generated intermediate, and six source-qualified final endpoints. A later bounded comparison with a separately declared fixed post-Flood register could test other event contacts without introducing new Gears.

Evidence and scope

K=529 and r=25/23. BC base B means (B+1)t/Bn BC; reflected AD base A means AD At/(A+1)n. Their civil span is B+A in both seasonal components, with no year zero. Signed paired centers are −B and +A; the center model uses components ±1/4 and restores this separation after dilation. An interval center is geometry, not an event or a proposed universal Mirror axis.

Regular Gears are restricted to Noah/Shem/Flood. Creation and Conquest retain fixed source-field members; no fourth Gear is admitted. Generated coordinates, source-field membership and stored graph incidence are distinct. File_18/File_09 and the frozen C127 graph are unchanged. Earlier N01/N03 qualifications, the missing Shem join, closed primers and unestablished original Reports 11–25 remain unchanged. This packet selectively uses prior evidence; it does not rerun completed campaigns. Assertions and alternative placements are not independent historical witness counts.

8 step-specific checks and 19 frozen-input checks passed. Exact inputs, results and predecessor hashes are in the accompanying JSON records; calculation code is in the evidence archive. Source dependencies are identified in the body and frozen in sources/.