{
  "access_policy": "Only the frozen release evaluator may consume test/background-test labels; challenge labels remain external/sealed.",
  "allowed_splits": [
    "background-test",
    "challenge",
    "test"
  ],
  "assignment_algorithm": "group-before-split-deficit-balancer-v1",
  "assignment_mode": "preassigned",
  "assignment_seed": "geointel-p4-group-split-v1",
  "claim_boundary": "Synthetic contract fixtures for evaluator regression only; never production accuracy evidence.",
  "crs": "EPSG:31370",
  "dataset_version": "geointel-p4-harness-fixture-v2",
  "generator_version": "1.3.0",
  "implemented_tasks": [
    "change_detection",
    "footprint_segmentation",
    "geospatial_data_validation",
    "object_detection",
    "raster_classification",
    "terrain_interpretation",
    "vector_comparison"
  ],
  "independence_buffer_m": 2000.0,
  "label_geometry_hamming_threshold": 2,
  "labels_available_by_split": {
    "background-test": "frozen_evaluator_only",
    "challenge": "sealed_external",
    "test": "frozen_evaluator_only"
  },
  "mandatory_split_roles": [
    "train",
    "val",
    "calibration",
    "test",
    "background-test",
    "challenge"
  ],
  "manifest_role": "protected_release_only",
  "manifest_sha256": "e57ca1529654ef1c2527e84122ff26ec3533e7c70658250983968fbc5d4af410",
  "perceptual_hamming_threshold": 4,
  "protected_task_coverage": [
    {
      "background_test_count": 0,
      "exemption_reason": null,
      "sealed_challenge_count": 0,
      "status": "covered",
      "task": "change_detection",
      "test_count": 1
    },
    {
      "background_test_count": 0,
      "exemption_reason": null,
      "sealed_challenge_count": 1,
      "status": "covered",
      "task": "footprint_segmentation",
      "test_count": 1
    },
    {
      "background_test_count": 0,
      "exemption_reason": null,
      "sealed_challenge_count": 1,
      "status": "covered",
      "task": "geospatial_data_validation",
      "test_count": 1
    },
    {
      "background_test_count": 2,
      "exemption_reason": null,
      "sealed_challenge_count": 1,
      "status": "covered",
      "task": "object_detection",
      "test_count": 1
    },
    {
      "background_test_count": 0,
      "exemption_reason": null,
      "sealed_challenge_count": 1,
      "status": "covered",
      "task": "raster_classification",
      "test_count": 1
    },
    {
      "background_test_count": 0,
      "exemption_reason": null,
      "sealed_challenge_count": 0,
      "status": "covered",
      "task": "terrain_interpretation",
      "test_count": 1
    },
    {
      "background_test_count": 0,
      "exemption_reason": null,
      "sealed_challenge_count": 0,
      "status": "covered",
      "task": "vector_comparison",
      "test_count": 1
    }
  ],
  "samples": [
    {
      "acquisition_date": "2025-01-17",
      "acquisition_id": "acquisition-17",
      "bbox": [
        60000.0,
        70000.0,
        60100.0,
        70100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g17",
      "label_geometry_fingerprint": "2b405bcc9c95acfb",
      "label_geometry_hash": "7171717171717171717171717171717171717171717171717171717171717171",
      "label_sha256": "5151515151515151515151515151515151515151515151515151515151515151",
      "native_feature_ids": [],
      "object_ids": [],
      "parent_raster_id": "parent-raster-17",
      "perceptual_image_hash": "6ada1b5aa46cc261",
      "processed_image_sha256": "3131313131313131313131313131313131313131313131313131313131313131",
      "raw_image_sha256": "1111111111111111111111111111111111111111111111111111111111111111",
      "record_sha256": "330f67df045e915670260db85cd399b7abb0a5277ca857e2b9483274dfd561c9",
      "sample_id": "background-test-hard-negative",
      "source_family": "scene-17",
      "split": "background-test",
      "task": "object_detection",
      "temporal_family": "temporal-17"
    },
    {
      "acquisition_date": "2025-01-16",
      "acquisition_id": "acquisition-16",
      "bbox": [
        20000.0,
        70000.0,
        20100.0,
        70100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g16",
      "label_geometry_fingerprint": "004e762f898c4fad",
      "label_geometry_hash": "7070707070707070707070707070707070707070707070707070707070707070",
      "label_sha256": "5050505050505050505050505050505050505050505050505050505050505050",
      "native_feature_ids": [],
      "object_ids": [],
      "parent_raster_id": "parent-raster-16",
      "perceptual_image_hash": "be4078e1ef9fa296",
      "processed_image_sha256": "3030303030303030303030303030303030303030303030303030303030303030",
      "raw_image_sha256": "1010101010101010101010101010101010101010101010101010101010101010",
      "record_sha256": "3e8066639f58f5230faea2b2964c532148f9fc6d891a1d04a127c1fac1cdb826",
      "sample_id": "background-test-pure-empty",
      "source_family": "scene-16",
      "split": "background-test",
      "task": "object_detection",
      "temporal_family": "temporal-16"
    },
    {
      "acquisition_date": "2025-01-13",
      "acquisition_id": "acquisition-13",
      "bbox": [
        50000.0,
        50000.0,
        50100.0,
        50100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g13",
      "label_geometry_fingerprint": "6c5b5f9db0d73c31",
      "label_geometry_hash": "6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d6d",
      "label_sha256": "4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d4d",
      "native_feature_ids": [
        "native-13-1",
        "native-13-2"
      ],
      "object_ids": [
        "o13",
        "o14"
      ],
      "parent_raster_id": "parent-raster-13",
      "perceptual_image_hash": "14e347040ef16eac",
      "processed_image_sha256": "2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d2d",
      "raw_image_sha256": "0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d0d",
      "record_sha256": "0550facfe80b78f11414cd578d3808fab503382f15c9e6e1f8fd4801ce3ab365",
      "sample_id": "change-test-wallonia-industrial",
      "source_family": "scene-13",
      "split": "test",
      "task": "change_detection",
      "temporal_family": "temporal-13"
    },
    {
      "acquisition_date": "2025-01-18",
      "acquisition_id": "acquisition-18",
      "bbox": [
        10000.0,
        90000.0,
        10100.0,
        90100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g18",
      "parent_raster_id": "parent-raster-18",
      "perceptual_image_hash": "15910b3a2d056648",
      "processed_image_sha256": "3232323232323232323232323232323232323232323232323232323232323232",
      "raw_image_sha256": "1212121212121212121212121212121212121212121212121212121212121212",
      "sample_id": "det-challenge-coast",
      "sealed": true,
      "source_family": "scene-18",
      "split": "challenge",
      "task": "object_detection",
      "temporal_family": "temporal-18",
      "withheld_fields": [
        "content_path_bindings",
        "governance_binding",
        "label_geometry_fingerprint",
        "label_geometry_hash",
        "label_geometry_path",
        "label_path",
        "label_sha256",
        "native_feature_ids",
        "object_ids",
        "record_sha256"
      ]
    },
    {
      "acquisition_date": "2025-01-09",
      "acquisition_id": "acquisition-09",
      "bbox": [
        10000.0,
        50000.0,
        10100.0,
        50100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g09",
      "label_geometry_fingerprint": "7ed221e11cc6828d",
      "label_geometry_hash": "6969696969696969696969696969696969696969696969696969696969696969",
      "label_sha256": "4949494949494949494949494949494949494949494949494949494949494949",
      "native_feature_ids": [
        "native-09-1",
        "native-09-2"
      ],
      "object_ids": [
        "o07",
        "o08"
      ],
      "parent_raster_id": "parent-raster-09",
      "perceptual_image_hash": "d6d20ed34050b89e",
      "processed_image_sha256": "2929292929292929292929292929292929292929292929292929292929292929",
      "raw_image_sha256": "0909090909090909090909090909090909090909090909090909090909090909",
      "record_sha256": "a551408577ce3494c75160c1c4fe90fbbc79a9f37bd151d7df8095d1cd35bc8b",
      "sample_id": "det-test-flanders-urban",
      "source_family": "scene-09",
      "split": "test",
      "task": "object_detection",
      "temporal_family": "temporal-09"
    },
    {
      "acquisition_date": "2025-01-20",
      "acquisition_id": "acquisition-20",
      "bbox": [
        50000.0,
        90000.0,
        50100.0,
        90100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g20",
      "parent_raster_id": "parent-raster-20",
      "perceptual_image_hash": "85f82f2f8eb2c2f5",
      "processed_image_sha256": "3434343434343434343434343434343434343434343434343434343434343434",
      "raw_image_sha256": "1414141414141414141414141414141414141414141414141414141414141414",
      "sample_id": "raster-challenge-seasonal",
      "sealed": true,
      "source_family": "scene-20",
      "split": "challenge",
      "task": "raster_classification",
      "temporal_family": "temporal-20",
      "withheld_fields": [
        "content_path_bindings",
        "governance_binding",
        "label_geometry_fingerprint",
        "label_geometry_hash",
        "label_geometry_path",
        "label_path",
        "label_sha256",
        "native_feature_ids",
        "object_ids",
        "record_sha256"
      ]
    },
    {
      "acquisition_date": "2025-01-11",
      "acquisition_id": "acquisition-11",
      "bbox": [
        30000.0,
        50000.0,
        30100.0,
        50100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g11",
      "label_geometry_fingerprint": "f4269ac17b100571",
      "label_geometry_hash": "6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b6b",
      "label_sha256": "4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b4b",
      "native_feature_ids": [
        "native-11-1"
      ],
      "object_ids": [
        "o10"
      ],
      "parent_raster_id": "parent-raster-11",
      "perceptual_image_hash": "4383fa06c328f326",
      "processed_image_sha256": "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b",
      "raw_image_sha256": "0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b",
      "record_sha256": "d66076d5cb479670bc8716334f526ddcbab07a2aacab28d7a5d6893795618d56",
      "sample_id": "raster-test-brussels-urban",
      "source_family": "scene-11",
      "split": "test",
      "task": "raster_classification",
      "temporal_family": "temporal-11"
    },
    {
      "acquisition_date": "2025-01-19",
      "acquisition_id": "acquisition-19",
      "bbox": [
        30000.0,
        90000.0,
        30100.0,
        90100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g19",
      "parent_raster_id": "parent-raster-19",
      "perceptual_image_hash": "b5c6e201d687cf9e",
      "processed_image_sha256": "3333333333333333333333333333333333333333333333333333333333333333",
      "raw_image_sha256": "1313131313131313131313131313131313131313131313131313131313131313",
      "sample_id": "seg-challenge-brussels",
      "sealed": true,
      "source_family": "scene-19",
      "split": "challenge",
      "task": "footprint_segmentation",
      "temporal_family": "temporal-19",
      "withheld_fields": [
        "content_path_bindings",
        "governance_binding",
        "label_geometry_fingerprint",
        "label_geometry_hash",
        "label_geometry_path",
        "label_path",
        "label_sha256",
        "native_feature_ids",
        "object_ids",
        "record_sha256"
      ]
    },
    {
      "acquisition_date": "2025-01-10",
      "acquisition_id": "acquisition-10",
      "bbox": [
        20000.0,
        50000.0,
        20100.0,
        50100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g10",
      "label_geometry_fingerprint": "e9fb3c93de82d0be",
      "label_geometry_hash": "6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a6a",
      "label_sha256": "4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a4a",
      "native_feature_ids": [
        "native-10-1"
      ],
      "object_ids": [
        "o09"
      ],
      "parent_raster_id": "parent-raster-10",
      "perceptual_image_hash": "6c476d18e0539687",
      "processed_image_sha256": "2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a",
      "raw_image_sha256": "0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a",
      "record_sha256": "7d0f9ee51cdf98e7f3acdc8117d48ce16d4d97538ba8179949a2c87dbbe5a526",
      "sample_id": "seg-test-wallonia-rural",
      "source_family": "scene-10",
      "split": "test",
      "task": "footprint_segmentation",
      "temporal_family": "temporal-10"
    },
    {
      "acquisition_date": "2025-01-14",
      "acquisition_id": "acquisition-14",
      "bbox": [
        60000.0,
        50000.0,
        60100.0,
        50100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g14",
      "label_geometry_fingerprint": "4ec9f1dd6c799ec7",
      "label_geometry_hash": "6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e6e",
      "label_sha256": "4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e4e",
      "native_feature_ids": [
        "native-14-1"
      ],
      "object_ids": [
        "o15"
      ],
      "parent_raster_id": "parent-raster-14",
      "perceptual_image_hash": "c808940b0a325e9c",
      "processed_image_sha256": "2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e2e",
      "raw_image_sha256": "0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e0e",
      "record_sha256": "4a47d90297a8325bb8257d7ca76b3281df8312d385715745a1a1fb74ba89efcd",
      "sample_id": "terrain-test-flanders-rural",
      "source_family": "scene-14",
      "split": "test",
      "task": "terrain_interpretation",
      "temporal_family": "temporal-14"
    },
    {
      "acquisition_date": "2025-01-21",
      "acquisition_id": "acquisition-21",
      "bbox": [
        70000.0,
        90000.0,
        70100.0,
        90100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g21",
      "parent_raster_id": "parent-raster-21",
      "perceptual_image_hash": "c71055ef6baeee8b",
      "processed_image_sha256": "3535353535353535353535353535353535353535353535353535353535353535",
      "raw_image_sha256": "1515151515151515151515151515151515151515151515151515151515151515",
      "sample_id": "validation-challenge-corrupt",
      "sealed": true,
      "source_family": "scene-21",
      "split": "challenge",
      "task": "geospatial_data_validation",
      "temporal_family": "temporal-21",
      "withheld_fields": [
        "content_path_bindings",
        "governance_binding",
        "label_geometry_fingerprint",
        "label_geometry_hash",
        "label_geometry_path",
        "label_path",
        "label_sha256",
        "native_feature_ids",
        "object_ids",
        "record_sha256"
      ]
    },
    {
      "acquisition_date": "2025-01-15",
      "acquisition_id": "acquisition-15",
      "bbox": [
        70000.0,
        50000.0,
        70100.0,
        50100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g15",
      "label_geometry_fingerprint": "616691796f62dbbb",
      "label_geometry_hash": "6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f6f",
      "label_sha256": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
      "native_feature_ids": [
        "native-15-1"
      ],
      "object_ids": [
        "o16"
      ],
      "parent_raster_id": "parent-raster-15",
      "perceptual_image_hash": "4365e6b7df6acf3d",
      "processed_image_sha256": "2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f2f",
      "raw_image_sha256": "0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f",
      "record_sha256": "0ff60414da05655b19c1717a27d8ba09aa8539a2b6c143e7a1a72b634fca397a",
      "sample_id": "validation-test-national",
      "source_family": "scene-15",
      "split": "test",
      "task": "geospatial_data_validation",
      "temporal_family": "temporal-15"
    },
    {
      "acquisition_date": "2025-01-12",
      "acquisition_id": "acquisition-12",
      "bbox": [
        40000.0,
        50000.0,
        40100.0,
        50100.0
      ],
      "content_hash_verification": {
        "label_geometry_hash": "synthetic_fixture_bound",
        "label_sha256": "synthetic_fixture_bound",
        "processed_image_sha256": "synthetic_fixture_bound",
        "raw_image_sha256": "synthetic_fixture_bound"
      },
      "group_id": "g12",
      "label_geometry_fingerprint": "2db7d069691934ed",
      "label_geometry_hash": "6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c6c",
      "label_sha256": "4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c4c",
      "native_feature_ids": [
        "native-12-1",
        "native-12-2"
      ],
      "object_ids": [
        "o11",
        "o12"
      ],
      "parent_raster_id": "parent-raster-12",
      "perceptual_image_hash": "1236e1aa148c25d5",
      "processed_image_sha256": "2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c",
      "raw_image_sha256": "0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c",
      "record_sha256": "63f561268e24208db0dcb4321cd66624188f2f66016338dac504d52051dae34a",
      "sample_id": "vector-test-flanders-suburban",
      "source_family": "scene-12",
      "split": "test",
      "task": "vector_comparison",
      "temporal_family": "temporal-12"
    }
  ],
  "schema_version": 1,
  "selection_use_allowed": false,
  "source_manifest_sha256": "1c75c875d4c297d046117bb9393ba5e648f13d3358ea92cb65374869c8f5fc01",
  "source_trust": {
    "mode": "synthetic_fixture",
    "policy_id": "geointel-p4-synthetic-fixture-v2",
    "production_accuracy_use_allowed": false
  },
  "training_access_allowed": false
}