{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "workflow-artifact.schema.json",
  "title": "Trusted workflow artifact envelope",
  "type": "object",
  "required": ["artifact-kind", "artifact-version", "identity", "payload"],
  "properties": {
    "report-type": {"const": "workflow-artifact"},
    "artifact-kind": {"type": "string", "minLength": 1},
    "artifact-version": {"type": ["integer", "string"]},
    "identity": {
      "type": "object",
      "required": ["artifact-id", "workflow-id", "stage", "producer-role-id"],
      "properties": {
        "artifact-id": {"type": ["string", "number"]},
        "workflow-id": {"type": ["string", "number"]},
        "stage": {"type": "string"},
        "producer-role-id": {"type": "string"}
      }
    },
    "payload": {"type": "object"}
  }
}