{
  "schemaVersion": "1.0.0",
  "kind": "nandarona.asset-provenance",
  "releaseId": "tsumino@2.5.0",
  "rightsOwner": "nandarona",
  "review": {
    "status": "human-reviewed",
    "reviewedAt": "2026-07-30",
    "checks": [
      "identity",
      "family distinction",
      "state readability",
      "prohibited elements",
      "source path"
    ]
  },
  "referenceAsset": {
    "publicPath": "/characters/platform/tactile/tsumino.png",
    "repositorySource": "assets/characters/tactile/design/tsumino-expressions-v1.png"
  },
  "expressionAsset": {
    "repositorySource": "assets/characters/tactile/design/tsumino-expressions-v1.png",
    "creationMethod": "OpenAI built-in ImageGen generation from the official Tactile Forms design contract, followed by human visual review",
    "promptContract": {
      "useCase": "stylized-concept",
      "requiredStates": [
        "loose",
        "hover-align",
        "edge-touch",
        "seat",
        "stacked",
        "unstick"
      ],
      "invariants": [
        "上に一つの偏心タブ、下に二方向の浅い溝を持つ六角柱",
        "積層タブと嵌合面",
        "preserve the face-free playable growth mechanism, individual seed/leaf/root/fruit/branch signal system, stable gameplay pivot, and shape-based state redundancy",
        "states must differ through structural action rather than recoloring"
      ],
      "avoid": [
        "単なる積み木セットにしない",
        "どの向きでも吸着させない",
        "恒久建築物にしない",
        "extra characters",
        "watermark"
      ]
    }
  },
  "licenseScope": "Released artifacts are offered under CC BY 4.0; third-party rights and official endorsement are not granted."
}