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Watch it decide · Ledger #250

daily-brief · MarketData+BriefComposer

published· conf ▰▰▰▰▰ 0.92· AUG 14, 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 20250 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": 0.92
  },
  "market": {
    "sources": [
      {
        "url": "https://fred.stlouisfed.org/series/MORTGAGE30US",
        "asOf": "2026-08-13",
        "name": "FRED · 30-Year Fixed Mortgage",
        "value": 6.67,
        "seriesId": "MORTGAGE30US"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS10",
        "asOf": "2026-08-13",
        "name": "FRED · 10-Year Treasury",
        "value": 4.63,
        "seriesId": "DGS10"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS2",
        "asOf": "2026-08-13",
        "name": "FRED · 2-Year Treasury",
        "value": 4.15,
        "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": "2026-08-13",
        "name": "FRED · S&P 500",
        "value": 7798.99,
        "seriesId": "SP500"
      }
    ],
    "readings": [
      {
        "asOf": "2026-08-13",
        "unit": "percent",
        "label": "30-Year Fixed Mortgage",
        "value": 6.67,
        "prevAsOf": "2026-08-06",
        "seriesId": "MORTGAGE30US",
        "prevValue": 6.69
      },
      {
        "asOf": "2026-08-13",
        "unit": "percent",
        "label": "10-Year Treasury",
        "value": 4.63,
        "prevAsOf": "2026-08-12",
        "seriesId": "DGS10",
        "prevValue": 4.68
      },
      {
        "asOf": "2026-08-13",
        "unit": "percent",
        "label": "2-Year Treasury",
        "value": 4.15,
        "prevAsOf": "2026-08-12",
        "seriesId": "DGS2",
        "prevValue": 4.2
      },
      {
        "asOf": "2026-07-01",
        "unit": "percent",
        "label": "Fed Funds Rate",
        "value": 3.63,
        "prevAsOf": "2026-06-01",
        "seriesId": "FEDFUNDS",
        "prevValue": 3.63
      },
      {
        "asOf": "2026-08-13",
        "unit": "index",
        "label": "S&P 500",
        "value": 7798.99,
        "prevAsOf": "2026-08-12",
        "seriesId": "SP500",
        "prevValue": 7748.5
      }
    ]
  },
  "briefId": 126,
  "composed": {
    "spec": {
      "root": {
        "kind": "Stack",
        "children": [
          {
            "cols": 3,
            "kind": "Grid",
            "children": [
              {
                "kind": "Stat",
                "label": "30-Year Fixed Mortgage",
                "value": "6.67%",
                "caption": "30-year fixed mortgage at 6.67%, down 2 bps on the day."
              },
              {
                "kind": "Stat",
                "label": "10-Year Treasury",
                "value": "4.63%",
                "caption": "10-year Treasury at 4.63%, down 5 bps; the reference anchor for conforming secondary."
              },
              {
                "kind": "Stat",
                "label": "2-Year Treasury",
                "value": "4.15%",
                "caption": "2-year at 4.15%, down 5 bps; curve flattens to 48 bps."
              },
              {
                "kind": "Stat",
                "label": "Fed Funds Rate",
                "value": "3.63%",
                "caption": "Fed funds holding at 3.63%, no change; terminal rate remains the inflection point."
              },
              {
                "kind": "Stat",
                "label": "S&P 500",
                "value": "7,798.99",
                "caption": "S&P 500 at 7,798.99; equity stability supports risk appetite for mortgage-backed paper."
              }
            ]
          },
          {
            "kind": "Text",
            "text": "What it means for your shop",
            "emphasis": "mono"
          },
          {
            "kind": "Callout",
            "text": "The stable mortgage–10Y spread (204 bps) signals steady secondary market pricing despite modest rate compression; originators see no immediate margin relief, but the flattening 10Y–2Y curve (48 bps) narrows the refinance incentive window and reduces long-term MSR tail risk.",
            "tone": "info"
          }
        ]
      },
      "title": "markets & rates"
    },
    "label": "autonomous · AI-generated",
    "usage": {
      "promptTokens": 1992,
      "completionTokens": 331
    },
    "summary": "Treasury yields fell 5 bps across the 2- and 10-year, while 30-year mortgages eased 2 bps, leaving the primary/secondary spread intact.",
    "headline": "Mortgage-to-10Y spread holds firm at 204 bps as short end yields slip",
    "disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
  },
  "artifactId": 128
}
05

Proof — the hash-chained record

seq #250
row_hash b6246bd8094dbdfef514f98bc59040f9d8de602d8fc87d5dfda182025a9a0b43
prev_hash d99ed8b99fec22a566a93a451a58944bcce97c801c69664115a7fa84e59178de

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.