C1433–C1482: three-manuscript inverse-spine study

Start with deliverables/490d_Chronological_Families_Explanation_C1431_Print.pdf. The integrated addition is on pages 14–16. The stable C1431 filename preserves the identity of the explanation; its contents now extend through C1482.

The standalone research study in deliverables contains the findings, all eighteen partition outcomes and all fifty sequential reassessments. journal.json is the exact signed record. Its predecessor is the included C1432 record; C1431 and C1432 were not rewritten.

Run the portable verification with Python 3 and no external packages:

python3 verify_cycle.py --require-50

The verifier independently computes digit reversal by integer division, checks the eighteen paths and local laws with exact arithmetic, checks source copies against their hashes, validates reader preservation and verifies all fifty completed predecessor-linked records. Its output is model/verification.json. Verification groups are not independent discoveries.

The six primary inputs are the already admitted Rounded MT/LXX source heads and accepted SP Fall heads. The eighteen paths compare Flood-only, Noah/Shem-only and both-node partitions. The legacy model keys path2/path3 identify held-anchor contexts (Conquest and Nativity extension); retaining both interior nodes increases the number of original intervals. No second decimal reversal was performed.

evidence contains bound source copies and the prior reader. agents contains independent arithmetic and source reviews. model stores complete exact results. assets retains the inherited overview image; its prior six-lane map is not a new C1482 diagram. prep holds the reader addition and document-generation code.

Source edition decisions, inherited versus new results, and failed stronger mappings are documented in the research study. The main report gives the connected explanation; it does not claim a universal transformation of complete genealogies.