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Publication series 4 — Programme & Trust

Run It Yourself: 43 Scripts, One Command, Same Numbers

Reproducibility isn't a promise in our methods section. It's a shell command.

Download the deposit, run one command, and 43 Tier-1 scripts re-derive the design's numbers on your laptop — 43 OK, 0 failures, outputs matching the deposited CSVs.

The science

The deposit ships its own verification harness: run_all.py executes every Tier-1 analysis — equilibrium, burn physics, kinetics, neutronics ledgers, power balance, even the LCOE table generator — and reports pass/fail against the deposited outputs. The certified line is 43 OK / 0 FAIL (with 4 external-code items skipped by design), and the suite has been re-certified after every revision of the series.

Reproduction is byte-serious: outputs are compared file-by-file, and when a reviewer-grade check found a single script whose rerun appended rather than rewrote its CSV, the bug and its fix went into the public record like everything else.

Why it matters

The cheapest due diligence in energy is rerunning our math — we made sure of it. Every journalist's 'how do we know?' has a literal answer: python3 run_all.py. Institutions that cannot audit a plasma can still audit a pipeline, and that is the trust bridge fusion has been missing.

The numbers

Verification harnessrun_all.py, in the deposit
Certified result43 OK / 0 FAIL (4 external skips)
Comparisonfile-by-file against deposited outputs
DependenciesPython + open libraries (FreeGS et al.)
Re-certifiedafter every series revision
Straight answersTier-1 reproduction validates our reduced-order chain, not nature; the flagship-code decks and the G1 hardware gates are where nature votes.
Every figure in this paper traces to the openly deposited 81-simulation programme (S01–S81) behind the Kronos MetroVolt four-paper design series — data and code at DOI 10.5281/zenodo.21248916 (CC BY 4.0). Read the series, run the code, check us.
Kronos MetroVolt is a conceptual design study. Quantitative values are simulation-derived and carry the feasibility gates stated in the series; Tier-2 flagship-code confirmations are deposited as runnable decks pending HPC execution. This document is informational and is not an offer of securities. © 2026 Kronos Fusion Energy, Los Angeles.