{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "additionalProperties": false,
  "required": ["occurredAt", "playerId", "playerName", "sessionId", "outcome"],
  "properties": {
    "occurredAt": { "type": "string", "format": "date-time", "minLength": 1, "maxLength": 40 },
    "playerId": { "type": "string", "minLength": 1, "maxLength": 96 },
    "playerName": { "type": "string", "minLength": 1, "maxLength": 80 },
    "sessionId": { "type": "string", "minLength": 1, "maxLength": 96 },
    "outcome": { "type": "string", "enum": ["accepted", "rejected"] },
    "networkFingerprint": { "type": "string", "minLength": 1, "maxLength": 128, "writeOnly": true, "description": "Transient source material for server-local irreversible correlation only; Platform never persists or returns this value." }
  }
}