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    "comparable_note": "is_stable is derived by the extraction, not an upstream flag, so comparing it against a hull recomputed from the same energies tests the derivation rather than the data",
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  "provenance": {
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    "builder_version": 1,
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    "correction_model": "OQMD fit-partial ('standard' fit, applied upstream by OQMD; none added)",
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}