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    }
  },
  "instructionToggleWitness": [
    {
      "enabled": {
        "invincibility": true,
        "rings": true,
        "lives": true
      },
      "opcodes": {
        "invincibility": 20085,
        "rings": 24600,
        "lives": 19000
      }
    },
    {
      "enabled": {
        "rings": true
      },
      "opcodes": {
        "invincibility": 19000,
        "rings": 24600,
        "lives": 21304
      }
    },
    {
      "enabled": {
        "lives": true
      },
      "opcodes": {
        "invincibility": 19000,
        "rings": 20153,
        "lives": 19000
      }
    },
    {
      "enabled": {
        "invincibility": true
      },
      "opcodes": {
        "invincibility": 20085,
        "rings": 20153,
        "lives": 21304
      }
    },
    {
      "enabled": {},
      "opcodes": {
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        "rings": 20153,
        "lives": 21304
      }
    }
  ],
  "snapshot": {
    "bytes": 1036312,
    "nativeLoadExact": true,
    "portableRoundTrip": true,
    "wrongGameRejected": true,
    "damagedRejected": true,
    "currentCheatSelectionSurvivesRestore": true
  },
  "fileRomUnchanged": true,
  "scope": "Actual retained Genesis WASM and supplied canonical REV00 cartridge. Private deterministic main-loop instrumentation; ordinary Start/right inputs collide with the first Green Hill enemy. Ring counts, an authentic spike-object placement and death position are explicit private test fixtures loaded through the native serializer. No public ROM patches or research states.",
  "primarySource": {
    "url": "https://github.com/sonicretro/s1disasm",
    "commit": "89c0e0e06b51fd9ebac44d988e4a89bd643fd031",
    "revisionSetting": 0,
    "buildMatchesRomExactly": true,
    "listing": {
      "HurtSonic": "0x1AFF4",
      "bounceSonicAway": "0x1B01C",
      "decrementLives": "0x138A0"
    }
  },
  "limitations": [
    "Invincibility bypasses HurtSonic damage, ring loss and knockback. Direct death routines for pits, drowning, crushing or timeout are unchanged. Solid level collision and collectible hitboxes remain.",
    "Keep-rings assist retains native hurt behavior and cannot prevent death from an ordinary hit at zero rings. It creates no duplicate dropped rings.",
    "Tests cover the first Green Hill enemy, a native spike object in a controlled placement and controlled death/snapshot fixtures, not a complete campaign or physical wireless controller. Browser rendering/audio proof is separate."
  ]
}