{
  "system_id": "ADAM_SOVEREIGN_TWIN_v1",
  "active_entities": 20,
  "simulation_horizon_months": 24,
  "macro_regime_override": "Quantitative Tightening",
  "entities": [
    { "iso": "US", "debt_to_gdp": 122.5, "central_bank_rate": 5.25, "10y_yield": 4.15, "cds_spread_bps": 12.5 },
    { "iso": "EU", "debt_to_gdp": 89.4, "central_bank_rate": 4.50, "10y_yield": 2.45, "cds_spread_bps": 22.0 },
    { "iso": "JP", "debt_to_gdp": 255.0, "central_bank_rate": 0.10, "10y_yield": 0.85, "cds_spread_bps": 18.0 },
    { "iso": "UK", "debt_to_gdp": 104.2, "central_bank_rate": 5.25, "10y_yield": 4.10, "cds_spread_bps": 25.5 },
    { "iso": "CN", "debt_to_gdp": 77.1, "central_bank_rate": 3.45, "10y_yield": 2.30, "cds_spread_bps": 45.0 }
  ],
  "contagion_model": {
    "engine": "Vector Autoregression (VAR)",
    "status": "CALIBRATED",
    "spillover_matrix": "dense"
  }
}