# C324 independent source review

**The target endpoint/dependency rule is not established by the audited passages.** The supplied sources contain genuine local `460 × 25/23 = 500` constructions, but none reviewed identifies the new regular SP→MT 460-year context correspondence as their input and the existing Noah-bound 500-year relation as their prescribed output.

This is a bounded source finding, not a rejection of either C323's verified biographies or the scalar identity. C323's checkpoint and synthesis were read first. The current notation is `K=529`, `E=25/23`, `P=70/69`; AXIS_REPORT instead names `25/23` as `K`, which is retained only inside quotations.

## Positive evidence and its exact scope

| Evidence | Source location | What it prescribes or retains | What it does not supply |
|---|---|---|---|
| Noah-bound 500 | File18 lines755–771;1571–1594 (S02,S05) | Named Noah 500/Shem 100/Flood 600 state; matched SP biographies preserve500/600/950. Arphaxad-bound 502 and mixed 499 remain distinct. | An E transformation from SP→MT context width. |
| Cainan insertion | File18 lines1118–1157 (S03) | Regular +130 and cumulative +460 are method-specific source rules. | Permission to treat composite regular −650+130+60 as cumulative Cainan insertion. |
| Bilateral460→500 | File09 lines1045–1074 (S10) | Explicit 14511→14011 and 14471→13971 expanded intervals, with 40-year shoulders around the cumulative-Cainan 460 core. Full outer width 540. | Regular SP/MT Noah/Shem event bindings. |
| Component completions | File09 lines1133–1193 (S11,S12) | Restored cumulative Flood/Arphaxad and Cainan/Shelah envelopes have declared 460→500 completions. | Identity between their generated targets and regular Noah-bound endpoints. |
| Regular-Cainan comparison | AXIS lines472–487 (S23) | Cainan 2551→2091 has 460 lifespan; selected Q1405 yields 4508/4968→4900/5400, whose differences are 460/500. | The new SP→MT context selector. Event, target and operation remain different. |
| Double expansion | File46 lines363–365;398–400;421–428 (S16,S18,S19) | A 23² multiple admits two integral E expansions; appendix 4232→4600→5000 is explicit. | A prescription connecting the target contexts. The source calls tenfold Noah 500 resonance a display motif. |

The sources therefore go beyond bare scalar arithmetic in their own declared constructions. Saying that “no endpoint rule exists for 460→500” would be false. The narrower conclusion is that **none of these local prescriptions supplies the missing three-way dependency for the present regular SP→MT/Noah question**.

## Why the target dependency remains missing

C323 already verifies the same-Gear primary comparison `SP OFF/T0/full430 → MT restoredON/T60/full430`, displacement `−650+130+60=−460`, across the five biography endpoints in each of three Gears. That result is inherited, not recalculated here. The scalar relation `460E=500` alone does not choose a held endpoint, direction, event binding, or phase ancestry. Those choices are exactly what would turn a width relation into the requested anchored path.

File09 explicitly separates cumulative and regular states and requires a stated conversion/dependency to replace one with the other (lines279–283,S09). It forbids inferring missing endpoints from factorization alone (lines648–650,S13). File18 makes the same method distinction and preserves both Noah-bound and text-bound Shem states (S01–S03). AXIS supplies the local SP 650/regular Cainan 130 ingredients (lines436–470,S22), but does not join them by E to Noah 500; its biography and squared-expansion partitions remain explicitly separate/thematic (lines106–151;380–407,S20–S21). Its bridge-first versus gap-expansion distinction is also explicit (lines489–505,S24).

The source burden still requires a rule binding the regular cross-context 460 leg to the input ofE and identifying its expanded target with the relevant Noah/Shem500 leg, including endpoint, direction, context and phase. No reviewed passage supplies that binding.

## Static motif and source-provenance controls

File46's `460+30=490` static-motif guard is local to the Matthew–Luke lattice (lines289–303,S15). Its own non-collapse guard says deep-time 460 states remain load-bearing in their own frames and are not governed by that local ruling (lines345–365,S16). The guard is therefore **not a global ban** on 460 or its conversions.

The File46 double-expansion example is appendix-only LXX 777-overlay material, not independent main 753-chain evidence (S18). Its arithmetic license is general; its Noah 500 association is explicitly a display motif (S19). No independent historical witness or prescribed regular context selector follows from the numerical resonance.

## Bound and next question

This audit used `rg` searches for 460/500/E/23², cross-tradition terms, and endpoint/dependency language, followed by relevant surrounding paragraphs in File18, File09, File46 and the frozen AXIS_REPORT. The companion JSON records exact line-numbered excerpts, source SHA-256 values, search coverage, positive findings and the bounded absence. It makes no repository-wide absence claim. Source files were not edited; there was no outside research, anchor fitting, primer reopening, C290 rerun, new coordinate calculation, cumulative/upstream Gear, or SP-companion transfer.

**Suggested C325, unexecuted:** census only the already admitted 15 primary SP/MT biography endpoints for a source-qualified `460+40=500` triple, preserving each event role, context, Gear, binding and phase. This can test whether an actual existing 40-year leg supports the scalar motivation. It must not create an anchor or E endpoint, and any admitted triple would remain an analytical coincidence unless a separate source prescription establishes selection. No later-step calculation was performed in this review.