{
  "schema_version": 1,
  "suite": "recurrent_snn_reference",
  "stage": 2,
  "status": "verified",
  "scope": "software_reference_contract",
  "reference": {
    "topology": "A -> B -> C -> D -> A",
    "neurons": 4,
    "synapses": 4,
    "delay_ticks": 1,
    "weight": 200.0,
    "ticks": 20000,
    "neuron_model": "izhikevich-2003",
    "secondary_mechanisms": "disabled"
  },
  "expected": {
    "spikes_per_tick": 1,
    "total_spikes": 20000,
    "events_processed": 19999,
    "queued_events_after_run": 1,
    "max_queue_depth": 1,
    "per_neuron_spikes": 5000
  },
  "proofs": {
    "closed_recurrent_topology": true,
    "bounded_event_queue": true,
    "finite_membrane_state": true,
    "sustained_spike_activity": true,
    "long_run_completed": true,
    "deterministic_replay_identity": true
  },
  "related_research": {
    "research_question": "RQ-SNN-001",
    "existing_experiment": "EXP-BATCH-20260908200906-01",
    "existing_experiment_ticks_per_run": 100000,
    "note": "The reference contract is an engineering verification. The registered experiment remains DATA/analysis and is not automatically promoted to scientific EVID."
  },
  "limits": [
    "The reference ring is deliberately small and strongly coupled.",
    "Passing this contract does not prove stability for arbitrary recurrent topology, weights, delays or neuron models.",
    "Passing this contract does not establish Stage-2 target-scale tractability at 1,000-10,000 neurons.",
    "Deterministic sustained activity is not evidence of cognition or biological equivalence."
  ]
}