490d C424 — The sixteen Flood-start to Noah-death 2K pairs

24 September 2026. Step 1 of10, C424–C433.

The16 labelled Flood-start/Noah-death pairs represent eight coordinate pairs, each with SP and LXX upper-source labels. None has a second2K station pairing within its fixed two contexts.

All differences are1058. The upper tradition is SP or LXX, with Terah+60; the lower is MT with Terah0. Each upper Gear is one below its lower Gear. Cainan and sojourn settings agree across the two contexts. LXX CainanOFF retains its theoretical-removal status.

The full within-context test includes both available SP person rails, all Noah/Shem birth/death stations and both Flood boundaries. It contains768 labelled station-pair trials, with the lower Noah-death rail held fixed. Every context pair has only its original Flood-start/Noah-death2K match. No companion or boundary is substituted to make another station fit.

There is nevertheless a coherent different translation: corresponding primary/native person stations and like-named Flood boundaries differ708 throughout each context pair. Upper SP companion person stations differ707 from the lower MT stations. The2K seed is thus a mixed-role relation within a broader708 correspondence. It is not another same-role2K biography profile.

This calculation closes the specific class proposed by C423. The next step should explain why its context choices produce708 and whether they are forced in the complete Flood-start/Noah-death source menu.

Verification and scope

17 calculation checks and 14 source/predecessor authentication checks passed. A separate main replay is byte-identical. Root-agent analysis and replay; no new independent-agent review is claimed. Verification counts are not independent historical witnesses.

The768 trials retain the two selected contexts in each case. This is not yet a census of all possible contexts or a source-prescribed708 operator.

Mirror/529 focus: K=529, E=25/23, P=70/69; J=300/299 remains File02 gap conversion, not a calendar date operator or Residue Protocol. Regular Gears are Noah/Shem/Flood only. SP person companions are local to Noah/Shem; Flood close is an independent event boundary. Both500/100 and502/98 bindings remain valid; SP primary Noah death retains its inclusive/harmonic qualification. LXX native Cainan is ON; OFF is theoretical removal. Global paired Mirror January AD1; local junction January AD2; no civil year zero. No new source point, phase, fitted axis, upstream/cumulative Gear, primer reopening or canonical/graph edit. Capture now; canonize later. Coordinates, source labels, context aliases and derived comparisons remain distinct. Counts are not independent historical witnesses.

Decision after this result

C425, proposed and unexecuted: Derive the exact source-offset equation for this class and census all existing Flood-start/Noah-death record pairs without preselecting tradition, variants, rail or Gear. Determine which context differences are necessary for1058.

The first audit found one repeated708 context offset. An unfiltered source equation can explain the16 labels without treating them as separate calibrations.