{
      "tool_id": "art-261-test-hedge-effectiveness",
      "tool_version": "1.0.0",
      "display_name": "Hedge Effectiveness Test",
      "mcp_name": "test_hedge_effectiveness",
      "mandate_type": "compliance_mandate",
      "wave": 44,
      "gpu": false,
      "url": "https://ainumbers.co/chaingraph/art-261-test-hedge-effectiveness.html",
      "description": "ASC 815-20-35 retrospective hedge effectiveness test. Computes dollar-offset ratio (fair-value change of hedging instrument / hedged item, must be 80-125%) and OLS R-squared regression (must be >=0.8) using pure deterministic arithmetic -- no Math.sqrt/log/pow transcendentals. RFC 3161 anchor surface for timestamped hedge designation evidence. Emits is_effective (bool), offset_ratio_pct, r_squared, and compliance_flags. ZERO PII: price series data only.",
      "input_schema_ref": "chaingraph/art-261-test-hedge-effectiveness.html#manifest",
      "consumes": [],
      "feeds": [
        "art-263-score-cash-forecast-accuracy"
      ],
      "status": "live",
      "conformance_fixtures": true,
      "compute_capability": "server",
      "compute_images": [{"system":"sha256-source","image_id":"sha256:2240e320a2d2880ca48fbe570ff159401593baa97abc367db0c558dc06cca5cd","valid_from":"2026-07-10"},{"system":"risc0","image_id":"sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6","valid_from":"2026-07-05"}],
      "export_capability": [
        "json"
      ],
      "compute_proof": {
        "type": "ZkVmReceipt",
        "system": "risc0",
        "receiptFormat": "groth16-bn254",
        "imageId": "sha256:a1a0bc89b5b1febaeda3519f6dbade0fa5ac16beeb143c4e1b01689573567bc6",
        "seal": "KZJrWX/CipugdVS6zvPudhPl2C3oUWOQff8qH/Q7I14p+I11u5/uA7+g6WO5GeAxQgmKkM7n/nn2UiR2bdfBMhgJ80vqJxj9A9sxRY0HXh23FpPgTKIACjCSR9kCbgZKA0lUm+XHVvjbq3hlAgUTHRJqUhBzQX9+hWR/1KGgi6IA6ORPhthks/f+3cAteQdTGSmbHP4jwwVqc5xPgN/6vQT80nEO2/u6BG+QyUP/RE4jyxhTW/cbXwqZD0SWgZuLIBRXgMghdozsOkB2kZB64vaLQiZUdTYM0/g2Xq92818nE090PG6RePYcIH8lW2bqMTao2c/7VlFSfjArs/YHCQ==",
        "journal": {
          "chaingraph_version": "0.4.0",
          "kernel_digest": "sha256:2240e320a2d2880ca48fbe570ff159401593baa97abc367db0c558dc06cca5cd",
          "output": {
            "anchor_surface": "anchor.ainumbers.co/mcp -- anchor the execution_hash at designation date to create RFC 3161 contemporaneous evidence that the hedge effectiveness test ran at designation, not backfilled (FASB ASC 815 anti-backdating rationale).",
            "asc815_80_125_band": "80%-125% (ASC 815-20-35)",
            "cumulative_hedged_change": 300,
            "cumulative_hedging_change": -290,
            "dollar_offset_effective": true,
            "dollar_offset_ratio": -0.9667,
            "effectiveness_reason": "Both dollar-offset (80-125%) and OLS regression (beta approx -1, R-squared >= 0.80) pass.",
            "effectiveness_standard": "asc815",
            "hedge_ratio": 1,
            "ifrs9_hedge_ratio_passes": true,
            "is_effective": true,
            "method_applied": "both",
            "not_legal_advice": "Not accounting or legal advice. Hedge effectiveness assessments must be reviewed by qualified accounting professionals and auditors before use in hedge accounting documentation.",
            "observation_count": 5,
            "ols_alpha": 0.16418,
            "ols_beta": -0.969403,
            "pii_note": "ZERO PII: fair-value or cash-flow changes, aggregate statistics only. No counterparty, notional terms, or personal data enters this kernel.",
            "r_squared": 0.9999,
            "regression_effective": true,
            "regulatory_basis": "ASC 815-20-35: dollar-offset 80-125% OR regression (beta approx -1, R-squared >= 0.80) for highly effective designation; FASB ASU 2017-12 simplification; IFRS 9.6.4.1: economic relationship + credit risk non-dominant + hedge ratio. ZERO PII: changes arrays and aggregate statistics only.",
            "table_source": "ASC 815-20-35 (hedge accounting, dollar-offset + regression); FASB ASU 2017-12; IFRS 9.6.4.1 (effectiveness requirements); IAS 39 AG105-AG113",
            "table_version": "ASC815-HEDGE-EFFECTIVENESS-V2023"
          }
        }
      },
      "compute_proof_ready": "ready"
    }