{
  "schema_version": "3.0",
  "trajectory_schema_ref": "schemas/trajectory.schema.json",
  "hash_algorithm": "sha256",
  "store_raw_content_separately": true,
  "required_events": ["tool_call", "tool_result", "checkpoint", "submission"],
  "checkpoint_policy": {
    "emit_on": [
      "new exact claim",
      "milestone dependency established",
      "machine artifact created",
      "counterexample or obstruction found",
      "claim scope weakened"
    ],
    "do_not_reward": [
      "verbosity",
      "number of tool calls",
      "citation count",
      "similarity to hidden reference wording"
    ]
  },
  "privacy_and_leakage": {
    "policy_trajectory_must_not_contain": ["hidden_reference", "hidden canonical candidate", "expert review before submission"],
    "reward_only_events_must_never_be_replayed_to_policy": true
  }
}