OpenChainGraph Suite · OCG v0.8.0 · Core Verify Pack

Interest Accrual Recompute

Note (dated 2026-08-17): 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.

Independently recomputes a core-system-reported interest accrual figure from the caller-declared principal, annual rate, day-count basis, and days accrued, then diffs the recomputed figure against the core's reported amount under a caller-declared variance tolerance. This chain configures the existing audit recalculation suite to its interest_accrual category only, no new kernel, no new node. The day-count/compounding convention is a contract term the caller declares for each item, never inferred or defaulted. Not core-migration and not core-replacement: this recomputes and receipts one core-reported figure against an independent arithmetic derivation.

OpenChainGraph · 1 Step attestation mandate · Linear Hash-Anchored §4 chain_depth:1 Client-Side · Zero PII
Not accounting, tax, or legal advice. This does not replace your core processor and is not an audit of your vendor. Outputs are computed from your declared inputs only. Recompute outputs require review by qualified finance staff before use in any reconciliation or disclosure.
§4 Execution Hash · Chain Definition Anchor
execution_hash:computing…
Chain Stages · 1 Step · Linear
1 ROOT · TERMINAL node
Recomputes each declared interest-accrual item (principal, annual_rate_pct, days_accrued, day_count_basis) independently and diffs the result against the core-reported interest figure, flagging any variance outside the caller-declared tolerance (tolerance_abs, tolerance_pct). This chain runs the interest_accrual category only; the suite's other categories are out of scope here. Only stage.
MCP Call · run_audit_recalc_suite
{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "run_audit_recalc_suite",
    "arguments": {
      "tolerance": {"abs": 0, "pct": 5},
      "interest_accrual": [
        {
          "item_id": "I-1",
          "principal": 100000,
          "annual_rate_pct": 6,
          "days_accrued": 90,
          "day_count_basis": "actual_360",
          "client_reported_interest": 1490
        }
      ]
    }
  },
  "id": 1
}
Export Chain Artifact
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