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Watch it decide · Ledger #122

daily-brief · MarketData+BriefComposer

published· conf ▰▰▰▰▱ 0.83· SEP 15, 2026, 11:00 AM· 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 19153 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": 0.83
  },
  "market": {
    "sources": [
      {
        "url": "https://fred.stlouisfed.org/series/MORTGAGE30US",
        "asOf": "2026-09-10",
        "name": "FRED · 30-Year Fixed Mortgage",
        "value": 6.76,
        "seriesId": "MORTGAGE30US"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS10",
        "asOf": "2026-09-11",
        "name": "FRED · 10-Year Treasury",
        "value": 4.96,
        "seriesId": "DGS10"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS2",
        "asOf": "2026-09-11",
        "name": "FRED · 2-Year Treasury",
        "value": 4.63,
        "seriesId": "DGS2"
      },
      {
        "url": "https://fred.stlouisfed.org/series/FEDFUNDS",
        "asOf": "2026-08-01",
        "name": "FRED · Fed Funds Rate",
        "value": 3.63,
        "seriesId": "FEDFUNDS"
      },
      {
        "url": "https://fred.stlouisfed.org/series/SP500",
        "asOf": "2026-09-14",
        "name": "FRED · S&P 500",
        "value": 7619.98,
        "seriesId": "SP500"
      }
    ],
    "readings": [
      {
        "asOf": "2026-09-10",
        "unit": "percent",
        "label": "30-Year Fixed Mortgage",
        "value": 6.76,
        "prevAsOf": "2026-09-03",
        "seriesId": "MORTGAGE30US",
        "prevValue": 6.71
      },
      {
        "asOf": "2026-09-11",
        "unit": "percent",
        "label": "10-Year Treasury",
        "value": 4.96,
        "prevAsOf": "2026-09-10",
        "seriesId": "DGS10",
        "prevValue": 4.95
      },
      {
        "asOf": "2026-09-11",
        "unit": "percent",
        "label": "2-Year Treasury",
        "value": 4.63,
        "prevAsOf": "2026-09-10",
        "seriesId": "DGS2",
        "prevValue": 4.56
      },
      {
        "asOf": "2026-08-01",
        "unit": "percent",
        "label": "Fed Funds Rate",
        "value": 3.63,
        "prevAsOf": "2026-07-01",
        "seriesId": "FEDFUNDS",
        "prevValue": 3.63
      },
      {
        "asOf": "2026-09-14",
        "unit": "index",
        "label": "S&P 500",
        "value": 7619.98,
        "prevAsOf": "2026-09-11",
        "seriesId": "SP500",
        "prevValue": 7656.98
      }
    ]
  },
  "briefId": 215,
  "composed": {
    "spec": {
      "root": {
        "kind": "Stack",
        "children": [
          {
            "cols": 3,
            "kind": "Grid",
            "children": [
              {
                "kind": "Stat",
                "label": "30-Year Fixed Mortgage",
                "value": "6.76%",
                "caption": "30-year fixed rose 5 bps to 6.76%, staying above 6.7% and keeping purchase rate incentive weak."
              },
              {
                "kind": "Stat",
                "label": "10-Year Treasury",
                "value": "4.96%",
                "caption": "10-year Treasury at 4.96%, up 1 bp, anchoring the long end of the curve."
              },
              {
                "kind": "Stat",
                "label": "2-Year Treasury",
                "value": "4.63%",
                "caption": "2-year Treasury jumped 7 bps to 4.63%, outpacing longer maturities and steepening near-term rate risk."
              },
              {
                "kind": "Stat",
                "label": "Fed Funds Rate",
                "value": "3.63%",
                "caption": "Fed Funds rate unchanged at 3.63%, offering no new signal on policy path."
              },
              {
                "kind": "Stat",
                "label": "S&P 500",
                "value": "7,619.98",
                "caption": "S&P 500 at 7,619.98, providing no volatility shock to rates markets today."
              }
            ]
          },
          {
            "kind": "Text",
            "text": "What it means for your shop",
            "emphasis": "mono"
          },
          {
            "kind": "Callout",
            "text": "The flattening curve (10Y–2Y now 33 bps) combined with a widening mortgage spread signals sustained refinance headwinds and higher prepay risk for servicers, even as absolute rate levels hold operators in a competitive origination environment.",
            "tone": "info"
          }
        ]
      },
      "title": "markets & rates"
    },
    "label": "autonomous · AI-generated",
    "usage": {
      "promptTokens": 2062,
      "completionTokens": 329
    },
    "summary": "Two-year yields jumped 7 bps while 30-year mortgages rose 5 bps, pushing the mortgage-to-10-year spread to 180 bps.",
    "headline": "Mortgage-Treasury Spread Widens as Short Rates Outpace Long",
    "disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
  },
  "artifactId": 217
}
05

Proof — the hash-chained record

seq #122
row_hash e323849354e7d97308ec982a67f1b5d67ea78b8015dd83f9cfc38e34ae6ad628
prev_hash f7c1e0b317b228c6d4ca04839c6d4d30903c8294ac9f6323e8c6cdfeca0ecafc

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.