{
      "name": "model-passport-lifecycle",
      "domain": "Bank Capital & Credit Risk",
      "title": "Model Passport Lifecycle",
      "spec_version": "0.8.0",
      "wave": 73,
      "description": "Linear three-step chain building an SR 26-2 model passport. Step 1 registers a model-inventory record with a completeness score and proportionality tier (art-450). Step 2 backtests the model's period predicted-vs-actual outcomes against a caller-declared error tolerance (art-451). Step 3 determines the model's SR 26-2 validation status from its tier, last-validation date, and the outcome-analysis result, applying a tier-based revalidation cadence (art-453). No routing gate -- validation_status branching lives inside art-453's own output, not chain-level routing.",
      "composer_url": "https://ainumbers.co/chaingraph/chains/model-passport-lifecycle.html",
      "regulatory_refs": [
        "SR 26-2 (model risk management guidance, successor to SR 11-7)",
        "SR 11-7 (Guidance on Model Risk Management)"
      ],
      "steps": [
        {
          "tool_id": "art-450-model-inventory-entry",
          "handoff": "Model-inventory record with proportionality tier and completeness score. Passes to outcome-analysis backtest."
        },
        {
          "tool_id": "art-451-model-outcome-analysis",
          "handoff": "Predicted-vs-actual outcome backtest with pass/fail status against the declared breach-rate tolerance. Passes to validation-status determination."
        },
        {
          "tool_id": "art-453-model-validation-status",
          "handoff": "Final SR 26-2 validation status, days-since-validation, and next-due-in-days. Final stage."
        }
      ]
    }