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Watch it decide · Ledger #253

daily-brief · MarketData+BriefComposer

published· conf ▰▰▰▰▱ 0.89· OCT 6, 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 15672 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": "2026-10-05",
        "name": "FRED · 10-Year Treasury",
        "value": 5.31,
        "seriesId": "DGS10"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS2",
        "asOf": "2026-10-05",
        "name": "FRED · 2-Year Treasury",
        "value": 4.84,
        "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": "2026-10-05",
        "name": "FRED · S&P 500",
        "value": 7773.95,
        "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": "2026-10-05",
        "unit": "percent",
        "label": "10-Year Treasury",
        "value": 5.31,
        "prevAsOf": "2026-10-02",
        "seriesId": "DGS10",
        "prevValue": 5.28
      },
      {
        "asOf": "2026-10-05",
        "unit": "percent",
        "label": "2-Year Treasury",
        "value": 4.84,
        "prevAsOf": "2026-10-02",
        "seriesId": "DGS2",
        "prevValue": 4.83
      },
      {
        "asOf": "2026-09-01",
        "unit": "percent",
        "label": "Fed Funds Rate",
        "value": 3.75,
        "prevAsOf": "2026-08-01",
        "seriesId": "FEDFUNDS",
        "prevValue": 3.63
      },
      {
        "asOf": "2026-10-05",
        "unit": "index",
        "label": "S&P 500",
        "value": 7773.95,
        "prevAsOf": "2026-10-02",
        "seriesId": "SP500",
        "prevValue": 7722.72
      }
    ]
  },
  "briefId": 273,
  "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 jumped 25 bps to 7.28%, the largest single-day move in the readings, outpacing Treasury repricing and signaling lender hedging activity or spread adjustment."
              },
              {
                "kind": "Stat",
                "label": "10-Year Treasury",
                "value": "5.31%",
                "caption": "10-year Treasury rose only 3 bps to 5.31%, a modest move that underscores the mortgage spike as spread-driven rather than duration-driven."
              },
              {
                "kind": "Stat",
                "label": "2-Year Treasury",
                "value": "4.84%",
                "caption": "2-year Treasury ticked up 1 bp to 4.84%, with the Fed Funds Rate climbing 12 bps to 3.75%, keeping near-term policy expectations anchored."
              },
              {
                "kind": "Stat",
                "label": "Fed Funds Rate",
                "value": "3.75%"
              },
              {
                "kind": "Stat",
                "label": "S&P 500",
                "value": "7,773.95"
              }
            ]
          },
          {
            "kind": "Text",
            "text": "What it means for your shop",
            "emphasis": "mono"
          },
          {
            "kind": "Callout",
            "text": "The sharp one-day mortgage move outpaces underlying Treasury shifts, widening the mortgage–10Y spread to 197 bps and reinforcing secondary-market repricing pressure; origination volume likely contracts further as purchase power erodes and refi incentive remains absent.",
            "tone": "info"
          }
        ]
      },
      "title": "markets & rates"
    },
    "label": "autonomous · AI-generated",
    "usage": {
      "promptTokens": 2064,
      "completionTokens": 357
    },
    "summary": "The 30-year fixed mortgage spiked to 7.28% while the 10–2 spread compressed to 47 bps, signaling renewed duration risk and refinance headwinds for servicers.",
    "headline": "Mortgage Rates Jump 25 Bps as Treasury Curve Flattens",
    "disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
  },
  "artifactId": 275
}
05

Proof — the hash-chained record

seq #253
row_hash 5fc474517fa02313e80ff6b5711cb62a97a97ddba9d2b8cbd0f954199db00406
prev_hash 887067a56523312c6fb5cec1667f212117bd4c93d61c6b1a4cff9c8c454d4aaa

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.