{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Public research contribution",
  "description": "A proposal record, not internal reasoning or an automatically accepted graph entry.",
  "type": "object",
  "required": [
    "id",
    "target",
    "target_version",
    "epistemic_kind",
    "assertion",
    "limits",
    "public_evidence",
    "declared_premises"
  ],
  "properties": {
    "id": {
      "type": "string",
      "minLength": 1
    },
    "target": {
      "type": "string",
      "minLength": 1
    },
    "target_version": {
      "type": "string",
      "minLength": 1
    },
    "epistemic_kind": {
      "enum": [
        "reconstruction",
        "retrospective_connection",
        "model_proposed"
      ]
    },
    "assertion": {
      "type": "string",
      "minLength": 1
    },
    "alternative_representation": {
      "type": "object"
    },
    "limits": {
      "type": "array",
      "items": {
        "type": "string",
        "minLength": 1
      }
    },
    "public_evidence": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "reference",
          "role"
        ],
        "properties": {
          "reference": {
            "type": "string",
            "minLength": 1
          },
          "role": {
            "type": "string",
            "minLength": 1
          }
        },
        "additionalProperties": true
      }
    },
    "declared_premises": {
      "type": "array",
      "items": {
        "type": "string",
        "minLength": 1
      }
    },
    "exposure": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "public_reference",
          "status",
          "time"
        ],
        "properties": {
          "public_reference": {
            "type": "string",
            "minLength": 1
          },
          "status": {
            "enum": [
              "available",
              "observed",
              "cited"
            ]
          },
          "time": {
            "type": "string",
            "format": "date-time"
          }
        },
        "additionalProperties": true
      }
    },
    "exposure_cutoff": {
      "type": "string",
      "format": "date-time"
    },
    "supersedes": {
      "type": [
        "string",
        "null"
      ]
    },
    "would_change_my_view": {
      "type": "string",
      "minLength": 1
    }
  },
  "additionalProperties": true,
  "$comment": "Exposure events later than cutoff are invalid; premise use is declared, not measured. Private sources must not be embedded."
}