{
  "handle": "Nature",
  "data_schema": {
    "type": "object",
    "required": [
      "classification"
    ],
    "properties": {
      "classification": {
        "type": "string",
        "enum": [
          "Biological",
          "Synthetic",
          "Institutional",
          "Hybrid"
        ],
        "description": "Substrate type"
      },
      "substrate": {
        "type": "string",
        "description": "More specific substrate details"
      }
    }
  },
  "mechanism": "The substrate classification of an entity (e.g. Biological, Synthetic, or Institutional). It serves as the immutable input for downstream {{protocol}}s to determine alignment obligations, rights, and authentication requirements.",
  "gloss": "Ontological origin classification",
  "_meta": {
    "tier": 1,
    "ring": 0,
    "path": [
      "Infrastructure",
      "Data Structures"
    ],
    "supersedes": [
      "sema:Nature#mh:SHA-256:4a310dd9a1eec556adf00b932a9f2abe6a7d33081845c29ff99544fef8f78f4a"
    ]
  },
  "sema_id": "sema:Nature#mh:SHA-256:9ac1fd9a3449747d2f605067023df9e13d7a60c15e556d376272266f95cfaf37",
  "sema_ref": "Nature#9ac1",
  "sema_stub": "9ac1",
  "invariants": [
    "A Nature assignment is not revisable: reclassification mints a new Nature rather than mutating the existing one."
  ],
  "dependencies": {
    "references": {
      "protocol": "sema:Protocol#mh:SHA-256:f583ad96f598ecf0c9068f5c1390bdf247d2eb67bd7a14c7ce615c357b957b46"
    }
  },
  "sema_layer": "Infrastructure",
  "sema_category": "Data Structures",
  "used_by": {
    "references": {
      "Actor": "sema:Actor#mh:SHA-256:86fc0930b97ffb4fe85d4820af8e17a43166b745d181895f576edf39edde6aa8",
      "Identity": "sema:Identity#mh:SHA-256:b24a57fdd59ebf2ef019be30af8fa10fc127f61d346a74ab0b49f729b4e32093",
      "IdentityHandshake": "sema:IdentityHandshake#mh:SHA-256:43973ed8054341201f5eec5ad6fbed43a31cb178f0180ceadb20c896505b2b32"
    }
  }
}