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Watch it decide · Ledger #229

daily-brief · MarketData+BriefComposer

published· conf ▰▰▰▰▰ 0.92· OCT 3, 2026, 4:00 PM· anthropic/claude-haiku-4.5· constitution v5

01

Inputs — what it was given

{}
02

Sources read — 5 cited

03

The gate — deterministic verdict

Decision: published · computed in 12261 ms

5/5 series, all sourced and fresh.

04

Outputs — what it produced

{
  "gate": {
    "pass": true,
    "reason": "5/5 series, all sourced and fresh.",
    "confidence": 0.92
  },
  "market": {
    "sources": [
      {
        "url": "https://fred.stlouisfed.org/series/MORTGAGE30US",
        "asOf": "2026-10-01",
        "name": "FRED · 30-Year Fixed Mortgage",
        "value": 7.28,
        "seriesId": "MORTGAGE30US"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS10",
        "asOf": "2026-10-01",
        "name": "FRED · 10-Year Treasury",
        "value": 5.24,
        "seriesId": "DGS10"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS2",
        "asOf": "2026-10-01",
        "name": "FRED · 2-Year Treasury",
        "value": 4.78,
        "seriesId": "DGS2"
      },
      {
        "url": "https://fred.stlouisfed.org/series/FEDFUNDS",
        "asOf": "2026-09-01",
        "name": "FRED · Fed Funds Rate",
        "value": 3.75,
        "seriesId": "FEDFUNDS"
      },
      {
        "url": "https://fred.stlouisfed.org/series/SP500",
        "asOf": "2026-10-02",
        "name": "FRED · S&P 500",
        "value": 7722.72,
        "seriesId": "SP500"
      }
    ],
    "readings": [
      {
        "asOf": "2026-10-01",
        "unit": "percent",
        "label": "30-Year Fixed Mortgage",
        "value": 7.28,
        "prevAsOf": "2026-09-24",
        "seriesId": "MORTGAGE30US",
        "prevValue": 7.03
      },
      {
        "asOf": "2026-10-01",
        "unit": "percent",
        "label": "10-Year Treasury",
        "value": 5.24,
        "prevAsOf": "2026-09-30",
        "seriesId": "DGS10",
        "prevValue": 5.29
      },
      {
        "asOf": "2026-10-01",
        "unit": "percent",
        "label": "2-Year Treasury",
        "value": 4.78,
        "prevAsOf": "2026-09-30",
        "seriesId": "DGS2",
        "prevValue": 4.88
      },
      {
        "asOf": "2026-09-01",
        "unit": "percent",
        "label": "Fed Funds Rate",
        "value": 3.75,
        "prevAsOf": "2026-08-01",
        "seriesId": "FEDFUNDS",
        "prevValue": 3.63
      },
      {
        "asOf": "2026-10-02",
        "unit": "index",
        "label": "S&P 500",
        "value": 7722.72,
        "prevAsOf": "2026-10-01",
        "seriesId": "SP500",
        "prevValue": 7666.45
      }
    ]
  },
  "briefId": 263,
  "composed": {
    "spec": {
      "root": {
        "kind": "Stack",
        "children": [
          {
            "cols": 3,
            "kind": "Grid",
            "children": [
              {
                "kind": "Stat",
                "label": "30-Year Fixed Mortgage",
                "value": "7.28%",
                "caption": "30-year fixed mortgage shot up 25 bps to 7.28%, the steepest single-day move in the readings."
              },
              {
                "kind": "Stat",
                "label": "10-Year Treasury",
                "value": "5.24%",
                "caption": "10-year Treasury dipped 5 bps to 5.24%, but gains there were swamped by mortgage-side repricing."
              },
              {
                "kind": "Stat",
                "label": "2-Year Treasury",
                "value": "4.78%",
                "caption": "2-year Treasury fell 10 bps to 4.78%, steepening the curve to 46 bps as Fed Funds held above 3.75%."
              },
              {
                "kind": "Stat",
                "label": "Fed Funds Rate",
                "value": "3.75%",
                "caption": "Fed Funds edged up 12 bps to 3.75%, keeping short-end pressure on servicer funding costs."
              },
              {
                "kind": "Stat",
                "label": "S&P 500",
                "value": "7,722.72",
                "caption": "S&P 500 closed at 7,722.72, unchanged in the brief window and offering no equity offset to rate volatility."
              }
            ]
          },
          {
            "kind": "Text",
            "text": "What it means for your shop",
            "emphasis": "mono"
          },
          {
            "kind": "Callout",
            "text": "A sharp one-day pop in mortgage rates without corresponding Treasury weakness signals lender repricing risk — servicers face tighter net-carry margins and refi volumes will remain subdued, while the 204 bps spread leaves little room for secondary market cushion if rates stabilize.",
            "tone": "info"
          }
        ]
      },
      "title": "markets & rates"
    },
    "label": "autonomous · AI-generated",
    "usage": {
      "promptTokens": 2064,
      "completionTokens": 355
    },
    "summary": "The 30-year fixed vaulted to 7.28% while Treasuries rallied, widening the mortgage-to-10Y spread to 204 bps.",
    "headline": "Mortgage Rates Jump 25 Bps as Curve Steepens",
    "disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
  },
  "artifactId": 265
}
05

Proof — the hash-chained record

seq #229
row_hash 6a48fd9ae906cccb935ec1a6b8f72b01098622736e93af80bf83b87bd812b9d0
prev_hash 441a1cc4cefcf94c7af8104cf388a8376d7da64b33a56e1845834964c065fb9d

This exact row, with its canonical preimage, is public at /api/ledger/export. Recompute its hash with the standalone verifier — it shares no code with this site. The chain head is timestamped into Bitcoin.

Evidence or it doesn't ship.