# 490d C414–C423 reading index and restart guide

**All ten steps are complete. C424 has not been executed.** 24 September 2026.

Read the C423 synthesis and checkpoint first. The C423 compact restart kit is the active packet. The C414–C423 continuation archive preserves all ten sealed packets and all30 individual deliverables. Older archives remain selective references. Current corrections override stale instructions and archived next-step paragraphs.

## Main finding

One coherent SP companion/MT person profile has the same1058=2K difference at all four Noah/Shem birth/death stations. It preserves the950- and600-year endpoint lifespans and is unique among4560 pairs of96 complete person contexts. The source context offset is650+130+60+215+4−1. These are consequences of one context difference, not independent historical witnesses.

| Station | SP companion G3 C1/T1/F1 | MT G1 C0/T0/F0 | Difference |
|---|---:|---:|---:|
| Noah birth |3899|2841|1058|
| Shem birth |3399|2341|1058|
| Selected Flood boundary |3299 close|2241 start|1058|
| Noah death |2949|1891|1058|
| Shem death |2799|1741|1058|

The explicit close/start station completes a500+100+350+150 partition. Same-boundary Flood comparisons differ1059, so the full Flood year does not translate at2K. None of the five pairs closes the fixed17K Mirror joins. One new E² endpoint is sourced: held3899 maps2841→2649, but intermediate2749 is absent and no sourced positive E/P/J path realizes that same complete map.

## Read first

- [490d_C423_Coherent_2K_Person_Profile_and_Its_Flood_Mirror_Harmonic_Limits_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C423_Coherent_2K_Person_Profile_and_Its_Flood_Mirror_Harmonic_Limits_20260924.md)
- [490d_Mirror_Checkpoint_After_C423_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C423_20260924.md)

## Ten-step report and evidence locator

| Step | Report | Checkpoint | Evidence |
|---|---|---|---|
|C414|[490d_C414_Complete_2K_Source_Pair_Census_under_Fixed_500_Translation_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C414_Complete_2K_Source_Pair_Census_under_Fixed_500_Translation_20260924.md)|[490d_Mirror_Checkpoint_After_C414_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C414_20260924.md)|[490d_C414_Evidence_20260924.zip](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C414_Evidence_20260924.zip)|
|C415|[490d_C415_Continuous_Record_Lifts_of_the_Six_2K_Translations_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C415_Continuous_Record_Lifts_of_the_Six_2K_Translations_20260924.md)|[490d_Mirror_Checkpoint_After_C415_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C415_20260924.md)|[490d_C415_Evidence_20260924.zip](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C415_Evidence_20260924.zip)|
|C416|[490d_C416_Coherent_Four_Station_SP_Companion_MT_2K_Profile_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C416_Coherent_Four_Station_SP_Companion_MT_2K_Profile_20260924.md)|[490d_Mirror_Checkpoint_After_C416_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C416_20260924.md)|[490d_C416_Evidence_20260924.zip](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C416_Evidence_20260924.zip)|
|C417|[490d_C417_Unfiltered_Census_of_Complete_2K_Person_Profiles_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C417_Unfiltered_Census_of_Complete_2K_Person_Profiles_20260924.md)|[490d_Mirror_Checkpoint_After_C417_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C417_20260924.md)|[490d_C417_Evidence_20260924.zip](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C417_Evidence_20260924.zip)|
|C418|[490d_C418_Flood_Boundary_Closure_and_Obstruction_of_the_2K_Profile_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C418_Flood_Boundary_Closure_and_Obstruction_of_the_2K_Profile_20260924.md)|[490d_Mirror_Checkpoint_After_C418_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C418_20260924.md)|[490d_C418_Evidence_20260924.zip](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C418_Evidence_20260924.zip)|
|C419|[490d_C419_Fixed_Mirror_Tests_of_the_Five_Station_2K_Profile_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C419_Fixed_Mirror_Tests_of_the_Five_Station_2K_Profile_20260924.md)|[490d_Mirror_Checkpoint_After_C419_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C419_20260924.md)|[490d_C419_Evidence_20260924.zip](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C419_Evidence_20260924.zip)|
|C420|[490d_C420_Fixed_Pivot_Harmonic_Endpoint_Tests_of_the_2K_Profile_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C420_Fixed_Pivot_Harmonic_Endpoint_Tests_of_the_2K_Profile_20260924.md)|[490d_Mirror_Checkpoint_After_C420_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C420_20260924.md)|[490d_C420_Evidence_20260924.zip](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C420_Evidence_20260924.zip)|
|C421|[490d_C421_Source_Path_Obstruction_for_the_New_Squared_E_Endpoint_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C421_Source_Path_Obstruction_for_the_New_Squared_E_Endpoint_20260924.md)|[490d_Mirror_Checkpoint_After_C421_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C421_20260924.md)|[490d_C421_Evidence_20260924.zip](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C421_Evidence_20260924.zip)|
|C422|[490d_C422_Source_and_Component_Audit_of_the_New_2K_Profile_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C422_Source_and_Component_Audit_of_the_New_2K_Profile_20260924.md)|[490d_Mirror_Checkpoint_After_C422_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C422_20260924.md)|[490d_C422_Evidence_20260924.zip](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C422_Evidence_20260924.zip)|
|C423|[490d_C423_Coherent_2K_Person_Profile_and_Its_Flood_Mirror_Harmonic_Limits_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C423_Coherent_2K_Person_Profile_and_Its_Flood_Mirror_Harmonic_Limits_20260924.md)|[490d_Mirror_Checkpoint_After_C423_20260924.md](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_Mirror_Checkpoint_After_C423_20260924.md)|[490d_C423_Evidence_20260924.zip](sandbox:/workspace/scratch/2cd312e78692/deliverables/490d_C423_Evidence_20260924.zip)|

## Full scientific checkpoint

C414–C423 complete. The finite source menu has26 coordinate pairs at2K, with46 labelled endpoint pairs. Six coordinate pairs survive a simultaneous−500 translation; none survives two. The six have10 continuous role-defined lifts; nine of19 raw coordinate lifts would switch source identities, and the separate3395→2895 bridge adds none. A complete same-role person profile is found: SP companion G3/CainanON/Terah+60/full430 versus MT G1/CainanOFF/Terah0/short sojourn. Noah births3899/2841, Shem births3399/2341, Noah deaths2949/1891 and Shem deaths2799/1741 all differ1058. Both950 and600 endpoint lifespans and all six pairwise intervals are preserved. Its one context offset is650+130+60+215+4−1=1058; the matches are not independent witnesses. An unfiltered96-context/4560-pair census finds exactly one such labelled profile. SP primary or LXX native at the selected upper settings gives1059. Adding SP Flood close3299 versus MT Flood start2241 yields a common500+100+350+150 five-station partition. Like-named Flood boundaries differ1059; all18 same-boundary Gear controls fail2K. The five new pairs yield no17K join in30 cumulative-source comparisons and no sourced image in20 inherited corner-exchange slots. Across20 fixed-pivot E/E²/P/J gap tests, one E² endpoint is sourced: held SP companion Noah3899 maps MT Noah2841 to MT G3 C1/T1/F1 Flood close2649. Its E intermediate2749 is absent. All sourced pivot choices reduce to3899,3899 for the same whole map; prime valuations extend the exclusion to every finite positive E/P/J word with that map. Twelve current excerpts reconstruct23 relevant records. Matched quarter-offset components pass the translation; fixed held3899 E² fails all four component assignments, while jointly shifting pivot and input gives a distinct comparison. No new source, prescribed combined protocol, global529/Mirror action or canonical edit is established.

## Restart and scope

Latest completed C423; C424 is unexecuted and outside this completed authorization. Read the C423 synthesis and checkpoint, then the C414–C423 reading index. Use the C423 compact restart kit as the active packet; older archives are selective references. The new2K person profile is SP companion G3 C1/T1/F1 versus MT G1 C0/T0/F0. Keep the four person pairs and the explicit SPclose/MTstart fifth station distinct from a same-boundary Flood-year translation, which fails by one year. C414 is the complete26-pair source census, C415 the record-identity audit, C416 the four-station profile, C417 finite uniqueness, C418 Flood-boundary controls, C419 fixed Mirror failures, C420 the exact3899-held squared-E endpoint, C421 the absent-path proof and C422 direct source/component audit. The profile does not replace original i3/i5 two17K joins. The scalar1058→1250 is prior arithmetic; the new3899/2841/2649 source context is an endpoint comparison with absent2749. Preserve prior C413 source500/Shem-loop results and their limits; no completed research needs rerunning. K529,E25/23,P70/69; J300/299 is File02 gap conversion, not Residue Protocol or general date operator. Global paired Mirror January AD1; local junction January AD2; no civil year zero. Regular Gears Noah/Shem/Flood only. SP person companions remain local; Flood close is independent; SP primary Noah death remains inclusive/harmonic; both500/100 and502/98 modes remain valid. LXX native CainanON is not given a second insertion; OFF is theoretical removal. No new sourcepoint, phase, fitted anchor, global axis, upstream/cumulative Gear, primer reopening or canonical graph edit. Corrected LXX8464 supplement remains awareness only:1564→1700,2484→2700,920→1000; AD3746/2300 superseded. C-series, original unprefixed reports and Engine reports remain distinct. The earlier incomplete September17 local ZIP differs from the later verified intact original. Arithmetic, aliases, repeated paths and alternate implementations are not independent historical witnesses. Proposed C424 is a bounded audit of the16 labelled Flood-start/Noah-death2K pairs already enumerated by C414, checking their exact contexts and any additional station correspondence; it has not been performed.

## Best next bounded step — unexecuted

Audit the16 labelled Flood-start/Noah-death2K pairings already enumerated in C414 as one closed class. Retain their exact source contexts and test whether an additional documented station in the same contexts supports a coherent correspondence, without adding sources, pivots, phases or Gear scope.

The current authorization ends at C423. C424 requires a new instruction.

## Verification and portable access

All30 individual deliverables were published incrementally. All ten sealed ZIPs passed CRC, payload hashes/sizes, certificate bindings and predecessor checks. Fresh isolated replay reproduced20/20 main DATA/RESULTS outputs and the C423 alternate-method output. 5422 main checks, 203 frozen-input/predecessor checks and 595 separate root-method checks passed. These counts describe verification, not independent witnesses. No new independent-agent review is claimed.

The compact kit contains complete C414, C416, C417, C418, C420, C421, C422 and C423 packets. C423 also freezes all nine predecessor DATA/RESULTS files, certificates and next-step decisions, including C415 and C419. Their full packets are in the continuation archive. Both packages include the C413 evidence ZIP as a selective prior reference; the compact kit additionally includes the prior C413 report/checkpoint and C265 checkpoint/certificate. File_18 and File_09 are frozen in every current packet; File_02, File_46 and File_11 are present in C423. Read current READ_FIRST and C423 checkpoint before any historical next-step paragraph.

Portable main replay in the compact kit: `python3 C423/evidence/check.py --out replay`. Compare DATA.json and RESULTS.json with C423/evidence/. Additional implementation: `python3 C423/evidence/ROOT_SECOND_METHOD.py --sources C423/sources --out secondary_replay`. Compare ROOT_SECOND_METHOD_RESULTS.json with the archived evidence copy. In the continuation archive, prefix those paths with `steps/`. The other full packets use the same main replay convention. Python3 standard library only.

The continuation archive contains extracted packets under `steps/`, all30 deliverables under `published/`, and integrity/completion records. PACKAGE_MANIFEST.json authenticates each payload. The separate completion/integrity JSON provides both recovery ZIP hashes and sizes. Publication records in that JSON bind the exact individual artifacts.

Actual File_18 and File_09 bytes match the retained hashes. File_02, File_46, File_11 and the cumulative C365 register match the C413 frozen source manifest. The C265 checkpoint is readable and its certificate matches its retained hash. C-series, original unprefixed reports and Engine reports remain distinct. The earlier incomplete September17 local ZIP differs from the later verified intact original. No full historical-report reread was needed.