# 490d C367 — Fixed19K native Noah lifespan transport

24 September 2026. Step 4 of 10 in the C364–C373 authorization.

**The existing19K span transports the entire native cumulative Noah950 interval to the retained reflected SP Noah950 interval.** It works on all four complete C287 rows, including both SP rails, with the original same-phase ancestry.

At i3, `−7295+10051=2756` and `−6345+10051=3706`. Cumulative Noah birth maps to reflected SP Noah death; the cumulative Noah-death/Shem-birth seam maps to reflected SP Noah birth. The950 width is retained. Endpoint event roles remain explicit; the translation preserves coordinate orientation while exchanging birth/death roles.

The19K value is already the C287 long cross-span. No axis or translation constant is fitted. Across16 source/target phase choices, the eight same-offset components pass exactly. This differs from C366’s interval reversal, which required opposite offsets.

The success does not include the OFF-Noah internal vertex. Let k=i+2 and e mark the SP companion. Sending an existing OFF-Noah annual member j to the restored-MT Noah birth would require `j=k+30+e`, outside0…7. All32 available internal-member tests fail. If one uses C366’s matching reversal member j=k−e, the translated image is30 years below the regular target on primary rows and32 below on companion rows. For example,−6835+10051=3216 rather than3246.

Thus the fixed19K comparison transports the complete native lifespan endpoints, while its internal Cainan partition has a different orientation. The source role connection is real but shares the inherited950 and19K values; it is not an independent determination of them.

## Verification and limits

54 main checks and 16 frozen-input/predecessor authentication checks passed. A second main replay produced byte-identical DATA/RESULTS. These checks and the source interpretation were performed by the root agent; no new independent-agent review is claimed. All frozen originals and standing controls remain unchanged. Verification counts are not independent-witness counts.

The endpoint transport reverses event roles and does not transport the full Cainan partition. Shared constants and phase repetitions are not independent witnesses.

Mirror/529 focus: K=529, E=25/23, P=70/69. Global paired Mirror January AD1; local junction January AD2; no civil year zero. Regular Gears are Noah/Shem/Flood only. SP minus-one person companions remain local to SP Noah/Shem; Flood close is a separate boundary. No upstream/cumulative Gear, new endpoint or phase, fitted anchor, global axis, primer reopening, canonical or graph edit. Capture now; canonize later. Source identity, context, modal binding, generated coordinates and phase ancestry stay distinct.

## Decision after this result

**C368, proposed and unexecuted:** Apply the fixed19K whole-Noah criterion to all20 C319 controls and compare it with the regular joined-map criterion from C360. Determine what each condition selects and whether their conjunction adds any independent source prescription.

The fixed transport gives a source interpretation of the long cross-span. The held control menu can now distinguish its cumulative selection from the regular-side selection.