0.4.0 — September 2026 register audit Build of record: 2023_20260930-0758 (grade warn; 75 QA checks pass, 16 warn, 0 fail). Dataset concept DOI: 10.5281/zenodo.21979416 (CC BY 4.0). A new version of the dataset relative to the 0.3.0 deposit, not a correction of it: coal +12.8 %, hydrogen +11.7 %, heat -9.5 %, electricity +0.8 %, the other five carriers within 0.3 %. The final round is a citation audit of data/hypothesis/hypotheses.yaml in which no published value moves: nine source documents were opened and their figures checked, seven attributions that did not hold were corrected, the cement product-column label was fixed, internal references were removed from both shipped data files, and the lime validation anchors were repointed from a same-publisher USGS comparison to Eurostat PRODCOM. Reproducibility check: a build from a clean worktree on this tag, re-fetching every upstream source, reproduces the build of record exactly -- same grading, same row count in each of the 23 artefacts, carrier totals equal to machine precision. See CHANGELOG.md for the full round-by-round history.