← the ledger
Watch it decide · Ledger #207

daily-brief · MarketData+BriefComposer

published· conf ▰▰▰▰▰ 0.92· AUG 7, 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 20034 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": "2026-08-06",
        "name": "FRED · 30-Year Fixed Mortgage",
        "value": 6.69,
        "seriesId": "MORTGAGE30US"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS10",
        "asOf": "2026-08-06",
        "name": "FRED · 10-Year Treasury",
        "value": 4.69,
        "seriesId": "DGS10"
      },
      {
        "url": "https://fred.stlouisfed.org/series/DGS2",
        "asOf": "2026-08-06",
        "name": "FRED · 2-Year Treasury",
        "value": 4.25,
        "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": "2026-08-06",
        "name": "FRED · S&P 500",
        "value": 7709.96,
        "seriesId": "SP500"
      }
    ],
    "readings": [
      {
        "asOf": "2026-08-06",
        "unit": "percent",
        "label": "30-Year Fixed Mortgage",
        "value": 6.69,
        "prevAsOf": "2026-07-30",
        "seriesId": "MORTGAGE30US",
        "prevValue": 6.66
      },
      {
        "asOf": "2026-08-06",
        "unit": "percent",
        "label": "10-Year Treasury",
        "value": 4.69,
        "prevAsOf": "2026-08-05",
        "seriesId": "DGS10",
        "prevValue": 4.63
      },
      {
        "asOf": "2026-08-06",
        "unit": "percent",
        "label": "2-Year Treasury",
        "value": 4.25,
        "prevAsOf": "2026-08-05",
        "seriesId": "DGS2",
        "prevValue": 4.18
      },
      {
        "asOf": "2026-07-01",
        "unit": "percent",
        "label": "Fed Funds Rate",
        "value": 3.63,
        "prevAsOf": "2026-06-01",
        "seriesId": "FEDFUNDS",
        "prevValue": 3.63
      },
      {
        "asOf": "2026-08-06",
        "unit": "index",
        "label": "S&P 500",
        "value": 7709.96,
        "prevAsOf": "2026-08-05",
        "seriesId": "SP500",
        "prevValue": 7723.55
      }
    ]
  },
  "briefId": 109,
  "composed": {
    "spec": {
      "root": {
        "kind": "Stack",
        "children": [
          {
            "cols": 3,
            "kind": "Grid",
            "children": [
              {
                "kind": "Stat",
                "label": "30-Year Fixed Mortgage",
                "value": "6.69%",
                "caption": "30-Year Fixed Mortgage ticked up 3 bps to 6.69%, trailing short-rate pressure."
              },
              {
                "kind": "Stat",
                "label": "10-Year Treasury",
                "value": "4.69%",
                "caption": "10-Year Treasury rose 6 bps to 4.69%, sitting between the 2-year and 30-year moves."
              },
              {
                "kind": "Stat",
                "label": "2-Year Treasury",
                "value": "4.25%",
                "caption": "2-Year Treasury jumped 7 bps to 4.25%, the sharpest single-day move of the five readings."
              },
              {
                "kind": "Stat",
                "label": "Fed Funds Rate",
                "value": "3.63%"
              },
              {
                "kind": "Stat",
                "label": "S&P 500",
                "value": "7,709.96"
              }
            ]
          },
          {
            "kind": "Text",
            "text": "What it means for your shop",
            "emphasis": "mono"
          },
          {
            "kind": "Callout",
            "text": "Near-term refi demand will crater as the 2-year climb outpaces mortgage relief; originators facing volume headwinds should brace for margin compression, while servicers see prepay risk fade but MSR volatility rise with curve steepness.",
            "tone": "info"
          }
        ]
      },
      "title": "markets & rates"
    },
    "label": "autonomous · AI-generated",
    "usage": {
      "promptTokens": 1990,
      "completionTokens": 381
    },
    "summary": "The 2-year Treasury spiked 7 bps while the 30-year mortgage gained only 3 bps, stretching the mortgage-to-10y gap to 200 bps and inverting near-term refinance incentives.",
    "headline": "Mortgage-Treasury Spread Widens as Short Rates Push Harder Than Long",
    "disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
  },
  "artifactId": 111
}
05

Proof — the hash-chained record

seq #207
row_hash 2009e524cbb78a55696c90860f296c05e99f4c0e5c70e15f4bd44f6b7e6bd5ba
prev_hash 4d4d50909fae4712bf0622a257c8ec61302d66b3a0902b23345d82623bf72c5f

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.