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  "provenance": {
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    "builder_version": 1,
    "collinear_tol": 1e-12,
    "correction_model": "OQMD fit-partial ('standard' fit, applied upstream by OQMD; none added)",
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    "observed_at": "2026-09-05T17:02:03Z",
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    "units": "eV/atom"
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  "schema_version": 1,
  "system_id": "AL-ZR",
  "x_element": "ZR"
}