{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:hms:provenance:v1:fact-subject",
  "title": "HMS fact credential subject v1",
  "type": "object",
  "required": ["id", "contentHash", "encodingMethod", "dimensions"],
  "properties": {
    "id": {"type": "string", "pattern": "^urn:hms:fact:"},
    "sourceUri": {"type": "string"},
    "contentHash": {"type": "string", "pattern": "^[0-9a-f]{64}$"},
    "encodingMethod": {"const": "holographic-reduced-representation"},
    "dimensions": {"type": "integer", "minimum": 0, "maximum": 4294967295},
    "subjectId": {"type": "string"},
    "relationId": {"type": "string"},
    "objectId": {"type": "string"}
  },
  "additionalProperties": false
}