FR Y-9C Schedule HC to HC-R Capital Chain

Note (dated 2026-08-04): a chain composes independent computations performed in an analytical order. No step's output is carried into the next step by the execution model; each step computes from its own declared inputs. This is true of every chain on this site, including chains whose per-step copy below reads as a data handoff.

Gated two-step chain for top-tier bank holding companies (Y-9C panel, total consolidated assets >= $3B). Step 1 maps caller-declared Schedule HC balance-sheet line items into Schedule HC totals and checks the balance-sheet identity. Step 2 consumes those totals alongside caller-supplied capital components to compute Schedule HC-R capital ratios and the supplementary leverage ratio, gated dual_control(2) before the capital-adequacy result is treated as final: any failed capital-ratio or SLR threshold requires two distinct approver sign-offs (recorded, not yet runtime-gated pending HA-RETRO-1 wiring).

OpenChainGraph · 2 Steps regulatory reporting Hash-Anchored §4 chain_depth:2 Client-Side · Zero PII

Chain Stages · 2 Steps

1 ROOT node

Bhc Schedule Hc Balance Sheet art-435-bhc-schedule-hc-balance-sheet

Schedule HC totals (total assets, total liabilities, total equity capital) feed Schedule HC-R capital-ratio computation

MCP Call · map_bhc_schedule_hc

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "map_bhc_schedule_hc",
    "arguments": {}
  },
  "id": 1
}

↓

2 TERMINAL node dual_control(2)

Bhc Schedule Hcr Capital art-436-bhc-schedule-hcr-capital

CET1/Tier1/Total capital ratios and SLR against caller-declared, version-pinned minimums; gated dual_control(2) on a failed capital-ratio result. Final stage.

§27 Human Accountability gate: total_capital_pass=false requires dual_control(2), two distinct approver identities, before the result is treated as final (recorded now, runtime-enforced once HA-RETRO-1 wires this gate).

MCP Call · map_bhc_schedule_hcr

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "map_bhc_schedule_hcr",
    "arguments": {}
  },
  "id": 1
}

Question: The holding company Y-9C is due at the supervisor. Does the capital it reports still clear the CET1 minimum? Run the AINumbers MCP tool `run_chain` with {"chain":"y9c-schedule-hc-hcr-capital"} and read `art-436-bhc-schedule-hcr-capital.ratios.cet1_pass`. Re-run with `inputs` for `art-436-bhc-schedule-hcr-capital`, reusing the values that result echoed, with `cet1_capital_usd` set to 50000000. Compare the same field. Verify: call `verify_execution_hash` (https://mcp.ainumbers.co/mcp) with `claimed_hash` set to `composite_execution_hash` and the full `composite_artifact`. Ledger, for a human re-check: https://ledger.ainumbers.co/ PII rule: send synthetic or anonymised inputs only. The MCP server runs these kernels and logs no payloads. Chain page: https://ainumbers.co/chaingraph/chains/y9c-schedule-hc-hcr-capital.html

FR Y-9C Schedule HC to HC-R Capital Chain

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