Boundary alignment for credible low-emission hydrogen deployment: an open-metadata evidence map and structured critical synthesis — supporting data and evidence map

This record provides the public supporting dataset and audit materials for the review “Boundary alignment for credible low-emission hydrogen deployment: an open-metadata evidence map and structured critical synthesis.” Version 4 supersedes Version 3 for reproducing the revised manuscript. The frozen OpenAlex core screening ledger remains n = 154. Final synthesis eligibility is reconciled as 152 included core academic records plus 2 audit-retained exclusions (OA0095 and OA0120); 12 contextual academic records and 3 earlier metadata-stage exclusions remain outside the core synthesis. The working synthesis therefore comprises 152 academic records plus 7 targeted official/institutional documents (n = 159). The separate Policy17 sensitivity layer remains methodologically distinct from the core evidence map and comprises 17 sources: 16 operative mechanism anchors plus P11 as contextual governance/import evidence. It is not added to the core denominator. Version 4 includes the updated public evidence map, corrected figure-source data and final manuscript-aligned versions of Figs. 1–4, the OpenAlex retrieval-robustness audit, and a sanitized blinded second-author validation/adjudication archive. The final Fig. 4 reflects consensus adjudication for the 24 purposively selected claim anchors; detailed pre-adjudication agreement and adjudication statistics are retained in the accompanying validation archive. No article full-text PDFs, publisher supplementary files, or licensed raw Scopus exports are redistributed. Earlier Zenodo versions remain available as historical provenance states. Version 4 should be used to reproduce the reconciled revised manuscript and its final evidence-map figures.