Watch it decide · Ledger #260
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▰ 0.92· AUG 16, 2026, 9:00 PM· anthropic/claude-haiku-4.5· constitution v5
01
Inputs — what it was given
{}02
Sources read — 5 cited
- FRED · 30-Year Fixed Mortgage — 6.67 · 2026-08-13
- FRED · 10-Year Treasury — 4.63 · 2026-08-13
- FRED · 2-Year Treasury — 4.15 · 2026-08-13
- FRED · Fed Funds Rate — 3.63 · 2026-07-01
- FRED · S&P 500 — 7785.76 · 2026-08-14
03
The gate — deterministic verdict
Decision: published · computed in 15372 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": "2026-08-14",
"name": "FRED · S&P 500",
"value": 7785.76,
"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": "2026-08-14",
"unit": "index",
"label": "S&P 500",
"value": 7785.76,
"prevAsOf": "2026-08-13",
"seriesId": "SP500",
"prevValue": 7798.99
}
]
},
"briefId": 132,
"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 fell 2 bps to 6.67%, continuing a gentle downslope but remaining far above pre-pandemic levels."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.63%",
"caption": "10-year Treasury shed 5 bps to 4.63%, reflecting softer long-duration demand."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.15%",
"caption": "2-year Treasury also down 5 bps to 4.15%, keeping near-term policy expectations anchored."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%"
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,785.76",
"caption": "S&P 500 closed at 7,785.76, up 14 bps on the day—a modest move consistent with declining rate volatility."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "With the 30–10 mortgage spread holding wide at 204 bps and rates still elevated, refinance incentive remains thin for most borrowers; however, the modest decline and flattening curve suggest operators should prepare for a potential shift in prepayment assumptions if the trend persists.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 1992,
"completionTokens": 310
},
"summary": "The 30-year fixed fell 2 bps to 6.67% while the 10–2 spread compressed, keeping the refi math unfavorable but signaling reduced rate volatility ahead.",
"headline": "Mortgage rates tick lower as Treasury curve flattens to 48 bps",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 134
}05
Proof — the hash-chained record
seq #260
row_hash 348992e01ac1c9fd4c8f0f566abfab7dd5547d830abc7c88d0b0ed6675ae1082
prev_hash e9e6cf7938ed826d77de6fa42f5f7aa5c67c2dc932b682dc82bc637eafbe27b1
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.