{
      "name": "exchange-assurance-pack",
      "domain": "Digital-Asset Rails",
      "title": "Exchange Assurance Pack",
      "description": "Custody segregation ratio > asset/liability coverage > PoR liabilities composer > best-execution recompute: composite exchange-assurance mandate.",
      "composer_url": "https://ainumbers.co/chaingraph/chains/exchange-assurance-pack.html",
      "regulatory_basis_status": "not_assessed",
      "regulatory_basis_decided_by": "sonnet",
      "regulatory_basis_decided_at": "2026-08-04",
      "steps": [
        {
          "tool_id": "art-538-custody-segregation-ratio",
          "handoff": "segregation_ratio and status feed Stage 2 asset/liability coverage as the custody-side input to the exchange's solvency picture"
        },
        {
          "tool_id": "art-539-asset-liability-coverage",
          "handoff": "coverage_ratio and surplus_shortfall_musd feed Stage 3 PoR-liabilities composer as balance-sheet context for the reported liabilities figure"
        },
        {
          "tool_id": "art-540-por-liabilities-composer",
          "handoff": "composite_determination and reserve_to_liability_ratio feed Stage 4 best-execution recompute, completing the reserves side of the assurance pack"
        },
        {
          "tool_id": "art-541-best-execution-recompute",
          "handoff": "pct_at_or_better and avg_price_improvement_bps complete the pack — composite exchange-assurance mandate"
        }
      ]
    }