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Watch it decide · Ledger #146

daily-brief · MarketData+BriefComposer

published· conf ▰▰▰▰▱ 0.89· JUL 27, 2026, 9:02 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 13908 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": "2026-07-23",
        "name": "FRED · 30-Year Fixed Mortgage",
        "value": 6.58,
        "seriesId": "MORTGAGE30US"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS10",
        "asOf": "2026-07-24",
        "name": "FRED · 10-Year Treasury",
        "value": 4.69,
        "seriesId": "DGS10"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS2",
        "asOf": "2026-07-24",
        "name": "FRED · 2-Year Treasury",
        "value": 4.33,
        "seriesId": "DGS2"
      },
      {
        "url": "https://fred.stlouisfed.org/series/FEDFUNDS",
        "asOf": "2026-06-01",
        "name": "FRED · Fed Funds Rate",
        "value": 3.63,
        "seriesId": "FEDFUNDS"
      },
      {
        "url": "https://fred.stlouisfed.org/series/SP500",
        "asOf": "2026-07-24",
        "name": "FRED · S&P 500",
        "value": 7411.98,
        "seriesId": "SP500"
      }
    ],
    "readings": [
      {
        "asOf": "2026-07-23",
        "unit": "percent",
        "label": "30-Year Fixed Mortgage",
        "value": 6.58,
        "seriesId": "MORTGAGE30US"
      },
      {
        "asOf": "2026-07-24",
        "unit": "percent",
        "label": "10-Year Treasury",
        "value": 4.69,
        "seriesId": "DGS10"
      },
      {
        "asOf": "2026-07-24",
        "unit": "percent",
        "label": "2-Year Treasury",
        "value": 4.33,
        "seriesId": "DGS2"
      },
      {
        "asOf": "2026-06-01",
        "unit": "percent",
        "label": "Fed Funds Rate",
        "value": 3.63,
        "seriesId": "FEDFUNDS"
      },
      {
        "asOf": "2026-07-24",
        "unit": "index",
        "label": "S&P 500",
        "value": 7411.98,
        "seriesId": "SP500"
      }
    ]
  },
  "briefId": 81,
  "composed": {
    "spec": {
      "root": {
        "kind": "Stack",
        "children": [
          {
            "cols": 3,
            "kind": "Grid",
            "children": [
              {
                "kind": "Stat",
                "label": "30-Year Fixed Mortgage",
                "value": "6.58%",
                "caption": "30-year fixed holds at 6.58%, unchanged from recent levels and well above the Fed's 3.63% floor."
              },
              {
                "kind": "Stat",
                "label": "10-Year Treasury",
                "value": "4.69%",
                "caption": "10-year Treasury at 4.69% supports the mortgage coupon; the 36-basis-point spread above the 2-year reflects normal term premium."
              },
              {
                "kind": "Stat",
                "label": "2-Year Treasury",
                "value": "4.33%",
                "caption": "2-year Treasury at 4.33% indicates stable near-term funding costs for banks."
              },
              {
                "kind": "Stat",
                "label": "Fed Funds Rate",
                "value": "3.63%",
                "caption": "Fed Funds at 3.63% (as of early June) remains the policy anchor; curve slope suggests no imminent rate cut is priced."
              },
              {
                "kind": "Stat",
                "label": "S&P 500",
                "value": "7,411.98",
                "caption": "S&P 500 near 7,412 reflects risk-on positioning; equity strength is not driving mortgage rates lower."
              }
            ]
          },
          {
            "kind": "Text",
            "text": "What it means for your shop",
            "emphasis": "mono"
          },
          {
            "kind": "Callout",
            "text": "The persistent mortgage rate around 6.58% keeps refi incentives muted while the steepening curve suggests lenders face steady hedging pressure; origination volumes likely remain constrained by rate lock psychology and borrower affordability ceilings.",
            "tone": "info"
          }
        ]
      },
      "title": "markets & rates"
    },
    "label": "autonomous · AI-generated",
    "usage": {
      "promptTokens": 1790,
      "completionTokens": 353
    },
    "summary": "The 30-year fixed stayed at 6.58% while the 10-year Treasury climbed to 4.69%, widening the spread and signaling stable long-term borrowing costs.",
    "headline": "Mortgage Rates Hold Firm as Treasury Curve Steepens",
    "disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
  },
  "artifactId": 83
}
05

Proof — the hash-chained record

seq #146
row_hash 66a3c61c5186c473a4ff54046a367cf4f17cbf3e5fd679bc4553a7a818e3ec72
prev_hash 6c3fe37bf420cdc5022466add60f1986104e091941f43f9f89616e99ec46797f

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.