{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schemas.driftframe.org/site-reading-governance/v2.0/first-receipt.schema.json",
  "title": "First Receipt Orientation Contract",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "first_receipt_id",
    "machine_node_id",
    "as_of",
    "orientation_purpose",
    "authority_posture",
    "contract_state",
    "evidence_posture",
    "coordination_horizon_id",
    "current_horizon_summary",
    "open_receipts",
    "invalidation_conditions",
    "source_permissions",
    "handoff",
    "metadata"
  ],
  "properties": {
    "first_receipt_id": {
      "$ref": "common.schema.json#/$defs/identifier"
    },
    "machine_node_id": {
      "$ref": "common.schema.json#/$defs/identifier"
    },
    "as_of": {
      "type": "string",
      "format": "date-time"
    },
    "orientation_purpose": {
      "type": "string",
      "minLength": 20,
      "maxLength": 900
    },
    "authority_posture": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "mode",
        "statement"
      ],
      "properties": {
        "mode": {
          "type": "string",
          "const": "orientation_only"
        },
        "statement": {
          "type": "string",
          "minLength": 20,
          "maxLength": 700
        }
      }
    },
    "contract_state": {
      "type": "array",
      "minItems": 1,
      "items": {
        "$ref": "common.schema.json#/$defs/contractReference"
      }
    },
    "evidence_posture": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "claim",
          "mode",
          "assurance_stage",
          "status"
        ],
        "properties": {
          "claim": {
            "type": "string",
            "minLength": 10,
            "maxLength": 700
          },
          "mode": {
            "$ref": "common.schema.json#/$defs/evidenceMode"
          },
          "assurance_stage": {
            "$ref": "common.schema.json#/$defs/assuranceStage"
          },
          "status": {
            "type": "string",
            "enum": [
              "active",
              "designed_but_unexercised",
              "speculative",
              "superseded"
            ]
          }
        }
      }
    },
    "coordination_horizon_id": {
      "$ref": "common.schema.json#/$defs/identifier"
    },
    "current_horizon_summary": {
      "type": "string",
      "minLength": 20,
      "maxLength": 900
    },
    "open_receipts": {
      "type": "array",
      "uniqueItems": true,
      "items": {
        "$ref": "common.schema.json#/$defs/identifier"
      }
    },
    "invalidation_conditions": {
      "type": "array",
      "minItems": 1,
      "uniqueItems": true,
      "items": {
        "type": "string",
        "minLength": 10,
        "maxLength": 700
      }
    },
    "source_permissions": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "source",
          "permission",
          "verification"
        ],
        "properties": {
          "source": {
            "type": "string",
            "minLength": 3,
            "maxLength": 240
          },
          "permission": {
            "type": "string",
            "enum": [
              "read",
              "propose",
              "execute_bounded",
              "approve"
            ]
          },
          "verification": {
            "type": "string",
            "minLength": 10,
            "maxLength": 700
          }
        }
      }
    },
    "handoff": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "recipient_role",
        "next_safe_action",
        "success_evidence"
      ],
      "properties": {
        "recipient_role": {
          "type": "string",
          "minLength": 2,
          "maxLength": 120
        },
        "next_safe_action": {
          "type": "string",
          "minLength": 10,
          "maxLength": 700
        },
        "success_evidence": {
          "type": "string",
          "minLength": 10,
          "maxLength": 700
        }
      }
    },
    "metadata": {
      "$ref": "common.schema.json#/$defs/recordMetadata"
    }
  }
}