{
  "discovery": "special-variants",
  "ledger_ids": [
    "STD1-003",
    "STD1-010",
    "Unnumbered: MMD Special equivalence",
    "Unnumbered: MMD layout",
    "Unnumbered: MMD state and UVs",
    "Unnumbered: MMD corpus"
  ],
  "confidence": "Confirmed",
  "claims": [
    {
      "id": "STD1-003",
      "claim": "Four SPECIAL variants never appear in any car slot.",
      "tier": "Confirmed",
      "limit": "Visual appearance and chronology are not inferred from the filenames.",
      "type": "Static evidence and saved emulated-original-code results. No runtime observation of a launched game.",
      "method": "Compare the SPECIAL models and their textures, then load their records with the original game code to compare geometry and state."
    },
    {
      "id": "STD1-010",
      "claim": "The SPECIAL family shares its coordinate floats but differs in attributes, including metadata at record offset 0x74.",
      "tier": "Confirmed",
      "limit": "0x74 is neither Z3 nor an established material selector; differences elsewhere include UV, mode, animation and an overwritten texture pointer.",
      "type": "Static evidence and saved emulated-original-code results. No runtime observation of a launched game.",
      "method": "Compare the SPECIAL models and their textures, then load their records with the original game code to compare geometry and state."
    },
    {
      "id": "Unnumbered: MMD Special equivalence",
      "claim": "Six SPECIAL-family filenames represent five source byte streams, four loaded states and one local triangle geometry.",
      "tier": "Confirmed",
      "limit": "Associated BMP textures can still differ, so equal model state does not imply equal textured appearance.",
      "type": "Static evidence and saved emulated-original-code results. No runtime observation of a launched game.",
      "method": "Compare the SPECIAL models and their textures, then load their records with the original game code to compare geometry and state."
    },
    {
      "id": "Unnumbered: MMD layout",
      "claim": "Each model record supplies a real triangle from coordinate arrays at offsets 0x44, 0x54 and 0x64.",
      "tier": "Confirmed",
      "limit": "The recovered vertex path is confirmed; the diagnostic preview is not a retail screenshot.",
      "type": "Static evidence and saved emulated-original-code results. No runtime observation of a launched game.",
      "method": "Compare the SPECIAL models and their textures, then load their records with the original game code to compare geometry and state."
    },
    {
      "id": "Unnumbered: MMD state and UVs",
      "claim": "The start of each model record contains draw state, integer coordinate caches, UVs and animation state.",
      "tier": "Confirmed",
      "limit": "The independent audit’s empirical read check covers the loader window; later raster/queue readers are supported by the contender trace.",
      "type": "Static evidence and saved emulated-original-code results. No runtime observation of a launched game.",
      "method": "Compare the SPECIAL models and their textures, then load their records with the original game code to compare geometry and state."
    },
    {
      "id": "Unnumbered: MMD corpus",
      "claim": "All 32 shipped models use 128-byte records with a four-byte count and a four-byte trailer.",
      "tier": "Confirmed",
      "limit": "Trailer semantics and several flag/metadata meanings remain unresolved.",
      "type": "Static evidence and saved emulated-original-code results. No runtime observation of a launched game.",
      "method": "Compare the SPECIAL models and their textures, then load their records with the original game code to compare geometry and state."
    }
  ],
  "examined_inputs": [
    {
      "name": "Hot Wheels - Stunt Track Driver.iso",
      "sha256": "82707d3f37ed08c4ce2c39bc28b29942cf7ee746ce67d8d957efea024cd56b80"
    },
    {
      "name": "stunt.exe",
      "sha256": "a938949d705e2e06af80c22bdd76b10b52df811342e5a5b28bc23ba716903850"
    }
  ],
  "method": "Compare the SPECIAL models and their textures, then load their records with the original game code to compare geometry and state.",
  "verification": "Historical research and audit records support the statements above. This assembly verifies mapping and media hashes; it does not rerun the excavation or establish a new gameplay observation.",
  "scope": "Reviewed publication summary. Private research notes, personal review records and raw game files are not included. Input hashes identify the 1998 source; they are not independent proof of each conclusion."
}