Watch it decide · Ledger #124
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▱ 0.89· SEP 15, 2026, 9:01 PM· anthropic/claude-haiku-4.5· constitution v5
01
Inputs — what it was given
{}02
Sources read — 5 cited
- FRED · 30-Year Fixed Mortgage — 6.76 · 2026-09-10
- FRED · 10-Year Treasury — 4.97 · 2026-09-14
- FRED · 2-Year Treasury — 4.65 · 2026-09-14
- FRED · Fed Funds Rate — 3.63 · 2026-08-01
- FRED · S&P 500 — 7619.98 · 2026-09-14
03
The gate — deterministic verdict
Decision: published · computed in 23870 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": 0.89
},
"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": "2026-09-14",
"name": "FRED · 10-Year Treasury",
"value": 4.97,
"seriesId": "DGS10"
},
{
"url": "https://fred.stlouisfed.org/series/DGS2",
"asOf": "2026-09-14",
"name": "FRED · 2-Year Treasury",
"value": 4.65,
"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": "2026-09-14",
"unit": "percent",
"label": "10-Year Treasury",
"value": 4.97,
"prevAsOf": "2026-09-11",
"seriesId": "DGS10",
"prevValue": 4.96
},
{
"asOf": "2026-09-14",
"unit": "percent",
"label": "2-Year Treasury",
"value": 4.65,
"prevAsOf": "2026-09-11",
"seriesId": "DGS2",
"prevValue": 4.63
},
{
"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": 216,
"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 mortgage rose 5 bps to 6.76%, outpacing Treasury moves and signaling tighter origination economics."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.97%",
"caption": "10-year Treasury rose only 1 bps to 4.97%, keeping the long end relatively flat on the day."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.65%",
"caption": "2-year Treasury climbed 2 bps to 4.65%, holding the 10–2 curve at a modest 32 bps."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed funds rate held steady at 3.63% as of early August, anchoring the policy backdrop."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,619.98",
"caption": "S&P 500 closed at 7,619.98, providing context for portfolio performance but not directly moving mortgage pricing on the day."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "Lenders face compression in origination margins as the spread widens—a sign that secondary-market pricing is penalizing mortgage risk relative to Treasuries, likely reflecting prepayment concerns and portfolio hedging costs. Refinance incentive remains nil at these levels.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 2062,
"completionTokens": 350
},
"summary": "The 30-year fixed mortgage climbed 5 bps to 6.76% while the 10-year Treasury rose only 1 bps, pushing the mortgage-Treasury spread to 179 bps.",
"headline": "Mortgage-Treasury Spread Widens as 30-Year Fixed Ticks Higher",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 218
}05
Proof — the hash-chained record
seq #124
row_hash 9bdaa4eab5a3880a90ca74b156dddb11f0dbd4f5ab366de0f63e678b6da86aef
prev_hash a2bf4066b71c03772fb5cb4923ee5a2ee6cb3528bf91d05505ef4d72bc8c2707
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.