Release v1.9.0: LICENSE_BREAKDOWN.md

LICENSE_BREAKDOWN.md

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+# License Breakdown — Scandium Labs SSB Dataset
+
+This document is the authoritative per-source license reference for the
+released dataset. The blanket CC-BY-4.0 grant in `LICENSE` covers only
+Scandium-authored content (processing, quality scoring, validation, analysis,
+documentation, and literature-mined records). Every third-party record is
+subject to its source database's own terms, identified per row via
+`identity.source_db`.
+
+## Per-source license table (release v1.9.0, `materials.parquet`, 30,801 records)
+
+| `identity.source_db` | Records | License | Commercial use |
+|---|---|---|---|
+| `materials_project` | 21,528 | CC BY 4.0 | Permitted (attribution) |
+| `jarvis` | 8,327 | CC0 1.0 (Public Domain) | Permitted |
+| `cod` | 500 | CC0 1.0 (Public Domain) | Permitted |
+| `aflow` | 150 | **Non-commercial only** | **Prohibited** |
+| `literature_mined` | 146 | CC BY 4.0 (Scandium-authored) | Permitted (attribution) |
+| `nomad` | 100 | CC BY 4.0 | Permitted (attribution) |
+| `oqmd` | 50 | CC BY 4.0 | Permitted (attribution) |
+| **Total** | **30,801** | | |
+
+## Source license details
+
+### Materials Project (`materials_project`) — CC BY 4.0
+Materials Project data is distributed under the Creative Commons Attribution
+4.0 International License. Attribution is required; commercial use is
+permitted. See https://materialsproject.org and https://creativecommons.org/licenses/by/4.0/.
+
+### JARVIS-DFT (`jarvis`) — CC0 1.0 (Public Domain)
+JARVIS-DFT data is hosted and distributed by NIST as a public resource.
+JARVIS data and NIST-created content are in the public domain under CC0 1.0
+Universal (CC0 1.0 Public Domain Dedication). See https://jarvis.nist.gov and
+https://creativecommons.org/publicdomain/zero/1.0/.
+
+### COD (`cod`) — CC0 1.0 (Public Domain)
+The Crystallography Open Database is an open-access collection of crystal
+structures, distributed under the CC0 1.0 Public Domain Dedication. See
+https://www.crystallography.net/cod/.
+
+### AFLOW (`aflow`) — Non-commercial only
+AFLOW/aflowlib.org data is licensed for **scientific, academic, and
+non-commercial purposes only; any other use is prohibited**. Per AFLOW's
+REST-API terms: "The data included within the aflow.org repository is free for
+scientific, academic and non-commercial purposes. Any other use is prohibited."
+These 150 records are **excluded from the CC-BY-4.0 blanket grant**; a
+commercial redistribution of the dataset requires these rows removed or
+separately cleared. See http://www.aflowlib.org/.
+
+### NOMAD (`nomad`) — CC BY 4.0
+NOMAD repository data is available under the Creative Commons Attribution 4.0
+International License. See https://nomad-lab.eu and
+https://creativecommons.org/licenses/by/4.0/.
+
+### OQMD (`oqmd`) — CC BY 4.0
+OQMD data is licensed under CC BY 4.0 per OQMD's own terms of use ("The data in
+OQMD is licensed under CC-BY 4.0", oqmd.org). Attribution to the OQMD and its
+source publications is required; commercial use is permitted. See
+https://oqmd.org and https://creativecommons.org/licenses/by/4.0/.
+
+### Literature-mined records (`literature_mined`) — CC BY 4.0 (Scandium-authored)
+Records extracted and curated by Scandium Labs from scientific literature are
+original Scandium-authored content licensed under CC BY 4.0. The underlying
+papers remain subject to their publishers' copyright; the extracted
+conductivity/Ea data points and their provenance annotations are released here
+under CC BY 4.0.
+
+## Attribution
+
+When redistributing this dataset, please:
+1. Credit Scandium Labs and link to the repository and this license file.
+2. Credit each source database used, and satisfy their citation requirements:
+   Materials Project, JARVIS-DFT (NIST), COD, AFLOW, NOMAD, and OQMD each
+   request citation of their respective reference publications.
+3. Preserve `identity.source_db` so downstream users can honor the per-source
+   terms above.
+
+## How to determine a row's license
+
+Every record in the released parquet files carries its source database in the
+`identity.source_db` column. Look up that value in the table above. Rows with
+`identity.source_db == "aflow"` are non-commercial; all other rows fall under
+either a permissive source license or the Scandium-authored CC BY 4.0 grant.
+
+## Warranty
+
+THE DATASET IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER
+LIABILITY ARISING FROM, OUT OF, OR IN CONNECTION WITH THE DATASET OR ITS USE.