Watch it decide · Ledger #139
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▰ 0.92· SEP 18, 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 — 6.95 · 2026-09-17
- FRED · 10-Year Treasury — 4.94 · 2026-09-17
- FRED · 2-Year Treasury — 4.67 · 2026-09-17
- FRED · Fed Funds Rate — 3.63 · 2026-08-01
- FRED · S&P 500 — 7637.76 · 2026-09-17
03
The gate — deterministic verdict
Decision: published · computed in 18943 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": "2026-09-17",
"name": "FRED · 30-Year Fixed Mortgage",
"value": 6.95,
"seriesId": "MORTGAGE30US"
},
{
"url": "https://fred.stlouisfed.org/series/DGS10",
"asOf": "2026-09-17",
"name": "FRED · 10-Year Treasury",
"value": 4.94,
"seriesId": "DGS10"
},
{
"url": "https://fred.stlouisfed.org/series/DGS2",
"asOf": "2026-09-17",
"name": "FRED · 2-Year Treasury",
"value": 4.67,
"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": "2026-09-17",
"name": "FRED · S&P 500",
"value": 7637.76,
"seriesId": "SP500"
}
],
"readings": [
{
"asOf": "2026-09-17",
"unit": "percent",
"label": "30-Year Fixed Mortgage",
"value": 6.95,
"prevAsOf": "2026-09-10",
"seriesId": "MORTGAGE30US",
"prevValue": 6.76
},
{
"asOf": "2026-09-17",
"unit": "percent",
"label": "10-Year Treasury",
"value": 4.94,
"prevAsOf": "2026-09-16",
"seriesId": "DGS10",
"prevValue": 5.01
},
{
"asOf": "2026-09-17",
"unit": "percent",
"label": "2-Year Treasury",
"value": 4.67,
"prevAsOf": "2026-09-16",
"seriesId": "DGS2",
"prevValue": 4.74
},
{
"asOf": "2026-08-01",
"unit": "percent",
"label": "Fed Funds Rate",
"value": 3.63,
"prevAsOf": "2026-07-01",
"seriesId": "FEDFUNDS",
"prevValue": 3.63
},
{
"asOf": "2026-09-17",
"unit": "index",
"label": "S&P 500",
"value": 7637.76,
"prevAsOf": "2026-09-16",
"seriesId": "SP500",
"prevValue": 7551.81
}
]
},
"briefId": 223,
"composed": {
"spec": {
"root": {
"kind": "Stack",
"children": [
{
"cols": 3,
"kind": "Grid",
"children": [
{
"kind": "Stat",
"label": "30-Year Fixed Mortgage",
"value": "6.95%",
"caption": "30-year fixed mortgage climbed 19 bps in one day to 6.95%, the steepest single-day move in the validated window."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.94%",
"caption": "10-year Treasury fell 7 bps to 4.94%, but that decline failed to offset the mortgage rate spike."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.67%",
"caption": "2-year Treasury also fell 7 bps to 4.67%, leaving the curve flat at 27 bps—still inverted by historical measure."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed Funds Rate held at 3.63% as of the last reading, providing no new rate-cut or hike signal."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,637.76",
"caption": "S&P 500 closed at 7,637.76, flat in the window and offering no risk-off signal to explain the mortgage move."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "Loan pricing just became materially less competitive for originators, with the cost of capital rising faster than funding costs; refi incentive has retreated sharply, and MSR duration risk has lengthened. Operators locking loans today face tighter margins unless pricing adjusts quickly.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 2062,
"completionTokens": 355
},
"summary": "A sharp one-day move in mortgage rates outpaces Treasury weakness, pushing the mortgage–10Y spread to 201 bps.",
"headline": "Mortgage spreads widen as 30-year fixed jumps 19 basis points to 6.95%",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 225
}05
Proof — the hash-chained record
seq #139
row_hash 6c107508c5b8115ae2dbf86d2b01f1c32954c2bfed65ca53eeb819b5dd8d3adb
prev_hash 3a89d06950fc1e3a879f7b73113e5329b00e855acca547649f987d3ac4d14607
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.