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Watch it decide · Ledger #327

daily-brief · MarketData+BriefComposer

published· conf ▰▰▰▰▱ 0.84· AUG 26, 2026, 9:03 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 9926 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": 0.84
  },
  "market": {
    "sources": [
      {
        "url": "https://fred.stlouisfed.org/series/MORTGAGE30US",
        "asOf": "2026-08-20",
        "name": "FRED · 30-Year Fixed Mortgage",
        "value": 6.65,
        "seriesId": "MORTGAGE30US"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS10",
        "asOf": "2026-08-25",
        "name": "FRED · 10-Year Treasury",
        "value": 4.64,
        "seriesId": "DGS10"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS2",
        "asOf": "2026-08-25",
        "name": "FRED · 2-Year Treasury",
        "value": 4.17,
        "seriesId": "DGS2"
      },
      {
        "url": "https://fred.stlouisfed.org/series/FEDFUNDS",
        "asOf": "2026-07-01",
        "name": "FRED · Fed Funds Rate",
        "value": 3.63,
        "seriesId": "FEDFUNDS"
      },
      {
        "url": "https://fred.stlouisfed.org/series/SP500",
        "asOf": "2026-08-25",
        "name": "FRED · S&P 500",
        "value": 7677.28,
        "seriesId": "SP500"
      }
    ],
    "readings": [
      {
        "asOf": "2026-08-20",
        "unit": "percent",
        "label": "30-Year Fixed Mortgage",
        "value": 6.65,
        "prevAsOf": "2026-08-13",
        "seriesId": "MORTGAGE30US",
        "prevValue": 6.67
      },
      {
        "asOf": "2026-08-25",
        "unit": "percent",
        "label": "10-Year Treasury",
        "value": 4.64,
        "prevAsOf": "2026-08-24",
        "seriesId": "DGS10",
        "prevValue": 4.7
      },
      {
        "asOf": "2026-08-25",
        "unit": "percent",
        "label": "2-Year Treasury",
        "value": 4.17,
        "prevAsOf": "2026-08-24",
        "seriesId": "DGS2",
        "prevValue": 4.24
      },
      {
        "asOf": "2026-07-01",
        "unit": "percent",
        "label": "Fed Funds Rate",
        "value": 3.63,
        "prevAsOf": "2026-06-01",
        "seriesId": "FEDFUNDS",
        "prevValue": 3.63
      },
      {
        "asOf": "2026-08-25",
        "unit": "index",
        "label": "S&P 500",
        "value": 7677.28,
        "prevAsOf": "2026-08-24",
        "seriesId": "SP500",
        "prevValue": 7652.86
      }
    ]
  },
  "briefId": 160,
  "composed": {
    "spec": {
      "root": {
        "kind": "Stack",
        "children": [
          {
            "cols": 3,
            "kind": "Grid",
            "children": [
              {
                "kind": "Stat",
                "label": "30-Year Fixed Mortgage",
                "value": "6.65%",
                "caption": "30-year fixed fell 2 bps to 6.65%, the only modest relief in a week of longer-rate pullback."
              },
              {
                "kind": "Stat",
                "label": "10-Year Treasury",
                "value": "4.64%",
                "caption": "10-year Treasury dropped 6 bps to 4.64%, compressing the spread to the 2-year to just 47 bps."
              },
              {
                "kind": "Stat",
                "label": "2-Year Treasury",
                "value": "4.17%",
                "caption": "2-year Treasury fell 7 bps to 4.17%, joining the flattening move as near-term rate cuts remain priced in."
              },
              {
                "kind": "Stat",
                "label": "Fed Funds Rate",
                "value": "3.63%",
                "caption": "Fed funds unchanged at 3.63% as of the last reading, holding steady above the terminal 10-year level."
              },
              {
                "kind": "Stat",
                "label": "S&P 500",
                "value": "7,677.28",
                "caption": "S&P 500 at 7,677, stable through the rates decline, showing no risk-off signal driving treasury demand."
              }
            ]
          },
          {
            "kind": "Text",
            "text": "What it means for your shop",
            "emphasis": "mono"
          },
          {
            "kind": "Callout",
            "text": "A 201 bp mortgage-treasury spread signals sustained margin pressure on origination; with the 10–2 curve nearly flat, refinance incentives remain muted despite yesterday's decline in long-rate anchors, keeping prepay risk modest but lock-in pull unlikely to accelerate.",
            "tone": "info"
          }
        ]
      },
      "title": "markets & rates"
    },
    "label": "autonomous · AI-generated",
    "usage": {
      "promptTokens": 2062,
      "completionTokens": 364
    },
    "summary": "The 10–2 curve compressed to 47 bps while the 30-year fixed edged down 2 bps, leaving the mortgage-treasury spread at its widest point in the validated dataset.",
    "headline": "Mortgage-to-Treasury spread widens to 201 bps as curve flattens and long rates retreat",
    "disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
  },
  "artifactId": 162
}
05

Proof — the hash-chained record

seq #327
row_hash 8b585d9191f3021c9acf7cbeb421dbe9cf7baeca83d789596d2bdf464c2ffabd
prev_hash 55403a7688c4d69bc0550f902cd57e4a17fd948b845f097cc182fdc8b98eeb01

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.