{
  "method": "Exact decoded RGB SHA-256 and exact opposite 32-pixel border strips with std>=5 and >=5% pixels below 220 in at least one channel. No rotations, arbitrary overlap offsets or patient identifiers inferred.",
  "original_splits_preserved": true,
  "patient_groups_verified": false,
  "exact_duplicate_groups": [],
  "cross_split_exact_duplicate_groups": [],
  "matching_opposite_border_strips": [
    {
      "first": "lizard_mitosis_train_00597",
      "first_edge": "right",
      "second": "lizard_mitosis_train_02326",
      "second_edge": "left"
    },
    {
      "first": "lizard_mitosis_train_00985",
      "first_edge": "right",
      "second": "lizard_mitosis_train_01880",
      "second_edge": "left"
    },
    {
      "first": "lizard_mitosis_train_01186",
      "first_edge": "right",
      "second": "lizard_mitosis_val_00343",
      "second_edge": "left"
    }
  ],
  "cross_split_matching_opposite_border_strips": [
    {
      "first": "lizard_mitosis_train_01186",
      "first_edge": "right",
      "second": "lizard_mitosis_val_00343",
      "second_edge": "left"
    }
  ],
  "pannuke_overlap": "Lizard includes PanNuke source images. No exact full-patch equality found against all 7,901 current PanNuke RGB samples; resized/stain-adjusted/partial overlaps and shared source slides remain unexamined. No independence claim.",
  "pannuke_exact_matches": [],
  "pannuke_exact_check": {
    "samples": 7901,
    "index_sha256": "04e1d41737120a78964a757f8b4bc554f9560616a0c39513049d66468ed29b72",
    "limit": "Exact decoded RGB equality only; resized, stain-adjusted or partially overlapping fields can be missed. No independence claim."
  },
  "visually_confirmed_cross_split_shared_view_pairs": [
    {
      "first": "lizard_mitosis_train_01186",
      "second": "lizard_mitosis_val_00343",
      "alignment": "Second image starts 224 pixels to the right of the first; the 32-pixel overlap matches exactly.",
      "review": "Native source images viewed separately and stitched at the shared strip; same tissue structures continue across it. This is confirmed shared content, not just a near-duplicate score."
    }
  ]
}