{
  "_comment": "One formulation in the exact shape POST /v1/predict returns. Includes the explicit Open3DCP v1.7 envelope plus compatibility fields.",
  "open3dcp": {
    "schema": "Open3DCP",
    "schema_version": "1.7",
    "record_type": "synthetic_mix_prediction",
    "original_basis": "mass_pct",
    "is_synthetic": true,
    "measurement_confidence": "estimated",
    "mix_design": {
      "cement_type_1l": 32,
      "fly_ash": 4,
      "silica_fume": 6,
      "fine_sand": 44.4,
      "water": 12.5,
      "superplasticizer": 0.9,
      "hpmc": 0.2
    },
    "predicted_properties": {
      "compressive_strength_mpa": 60,
      "flexural_strength_mpa": 6.9,
      "spread_mm": 185,
      "yield_stress_pa": 1650
    },
    "water_binder_ratio": 0.3,
    "confidence": 0.83,
    "model_source": "cemforge_prediction_engine",
    "model_version": "CEMFORGE-2026.06",
    "target": {
      "compressive_mpa": 60,
      "tolerance_pct": 10,
      "acceptable_band_mpa": [
        54,
        66
      ]
    },
    "band_status": "in_band",
    "provenance": {
      "generator": "CEMFORGE",
      "trace": {
        "scheme": "logimix-trace-v1",
        "generation_id": "lgx_gen_11112222333344445555666677778888",
        "generated_at": "2026-06-08T00:00:00.000Z",
        "model_release": "CEMFORGE-2026.06",
        "schema_version": "1.7",
        "input_fingerprint": {
          "fingerprint_id": "7b7c602ee21d49388654f7aab7d20645",
          "scheme": "logimix-input-fingerprint-v1"
        },
        "formulation_fingerprint": {
          "fingerprint_id": "c214f0a311b048a099460a8b30e521d9",
          "scheme": "logimix-formulation-fingerprint-v1"
        }
      },
      "output_fingerprint": {
        "fingerprint_id": "87bdc2d7fd214f0f95150a67",
        "scheme": "cemforge-output-fingerprint-v1"
      }
    },
    "accuracy_note": "Predicted (synthetic) values from a statistical model - not measured. Use the confidence score and verify by physical testing before real-world use."
  },
  "mix_design": {
    "cement_type_1l": 32,
    "fly_ash": 4,
    "silica_fume": 6,
    "fine_sand": 44.4,
    "water": 12.5,
    "superplasticizer": 0.9,
    "hpmc": 0.2
  },
  "predicted_properties": {
    "compressive_strength_mpa": 60,
    "flexural_strength_mpa": 6.9,
    "spread_mm": 185,
    "yield_stress_pa": 1650
  },
  "water_binder_ratio": 0.3,
  "confidence": 0.83,
  "model_source": "cemforge_prediction_engine",
  "model_version": "CEMFORGE-2026.06",
  "schema_version": "1.7",
  "target": {
    "compressive_mpa": 60,
    "tolerance_pct": 10,
    "acceptable_band_mpa": [
      54,
      66
    ]
  },
  "band_status": "in_band",
  "accuracy_note": "Predicted (synthetic) values from a statistical model - not measured. Use the confidence score and verify by physical testing before real-world use.",
  "metadata": {
    "credits_remaining": 9,
    "trace": {
      "scheme": "logimix-trace-v1",
      "generation_id": "lgx_gen_11112222333344445555666677778888",
      "generated_at": "2026-06-08T00:00:00.000Z",
      "model_release": "CEMFORGE-2026.06",
      "schema_version": "1.7",
      "input_fingerprint": {
        "fingerprint_id": "7b7c602ee21d49388654f7aab7d20645",
        "scheme": "logimix-input-fingerprint-v1"
      },
      "formulation_fingerprint": {
        "fingerprint_id": "c214f0a311b048a099460a8b30e521d9",
        "scheme": "logimix-formulation-fingerprint-v1"
      }
    },
    "output_fingerprint": {
      "fingerprint_id": "87bdc2d7fd214f0f95150a67",
      "scheme": "cemforge-output-fingerprint-v1"
    }
  }
}