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Watch it decide · Ledger #248

daily-brief · MarketData+BriefComposer

published· conf ▰▰▰▰▱ 0.89· OCT 5, 2026, 9:00 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 15929 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": 0.89
  },
  "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": "2026-10-02",
        "name": "FRED · 10-Year Treasury",
        "value": 5.28,
        "seriesId": "DGS10"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS2",
        "asOf": "2026-10-02",
        "name": "FRED · 2-Year Treasury",
        "value": 4.83,
        "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": "2026-10-02",
        "unit": "percent",
        "label": "10-Year Treasury",
        "value": 5.28,
        "prevAsOf": "2026-10-01",
        "seriesId": "DGS10",
        "prevValue": 5.24
      },
      {
        "asOf": "2026-10-02",
        "unit": "percent",
        "label": "2-Year Treasury",
        "value": 4.83,
        "prevAsOf": "2026-10-01",
        "seriesId": "DGS2",
        "prevValue": 4.78
      },
      {
        "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": 270,
  "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 rose 25 bps in a single day to 7.28%, outpacing the 4 bps move in the 10-year Treasury."
              },
              {
                "kind": "Stat",
                "label": "10-Year Treasury",
                "value": "5.28%",
                "caption": "10-year Treasury yielded 5.28%, up 4 bps, with the 2-year climbing 5 bps to 4.83%."
              },
              {
                "kind": "Stat",
                "label": "2-Year Treasury",
                "value": "4.83%",
                "caption": "The 10–2 curve spread narrowed slightly to 45 bps as shorter rates caught up."
              },
              {
                "kind": "Stat",
                "label": "Fed Funds Rate",
                "value": "3.75%",
                "caption": "Fed funds rate at 3.75% as of early September; recent overnight volatility suggests market positioning ahead of incoming data."
              },
              {
                "kind": "Stat",
                "label": "S&P 500",
                "value": "7,722.72",
                "caption": "Equity indices holding steady near 7,723, providing no obvious portfolio tailwind to risk appetite or volatility repricing."
              }
            ]
          },
          {
            "kind": "Text",
            "text": "What it means for your shop",
            "emphasis": "mono"
          },
          {
            "kind": "Callout",
            "text": "The 25 bps pop in 30-year mortgage rates signals renewed refi headwind and lower origination volume for the near term; the widening mortgage-to-10-year spread to 200 bps is a reminder that even flat Treasury moves can pressure loan economics if the basis shifts suddenly.",
            "tone": "info"
          }
        ]
      },
      "title": "markets & rates"
    },
    "label": "autonomous · AI-generated",
    "usage": {
      "promptTokens": 2062,
      "completionTokens": 359
    },
    "summary": "A sharp one-day move in mortgages outpaces modest gains across the Treasury curve, widening the origination-inhibiting spread to 200 bps.",
    "headline": "Mortgage rates jump 25 bps as Treasury curve steepens; 30-year hits 7.28%",
    "disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
  },
  "artifactId": 272
}
05

Proof — the hash-chained record

seq #248
row_hash f56f253b73a1e198d5bde3140eaddfb28fe60d83846866c89785e7c8dfda9b3d
prev_hash d555f774a1423306d2f185a77614295b184071d506235006ba6c17aacfa14370

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.