Watch it decide · Ledger #128
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▱ 0.78· SEP 16, 2026, 4:00 PM· anthropic/claude-haiku-4.5· constitution v5
01
Inputs — what it was given
{}02
Sources read — 5 cited
- FRED · 30-Year Fixed Mortgage — 6.76 · 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 — 7585.73 · 2026-09-15
03
The gate — deterministic verdict
Decision: published · computed in 18555 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": 0.78
},
"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": "2026-09-15",
"name": "FRED · S&P 500",
"value": 7585.73,
"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": "2026-09-15",
"unit": "index",
"label": "S&P 500",
"value": 7585.73,
"prevAsOf": "2026-09-14",
"seriesId": "SP500",
"prevValue": 7619.98
}
]
},
"briefId": 218,
"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 hit 6.76%, up 5 bps in a single day, reflecting a sharper repricing in the primary market than secondary markets experienced."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.97%",
"caption": "10-year Treasury edged to 4.97%, up only 1 bps, leaving the bulk of the mortgage rise unexplained by benchmark moves alone."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.65%",
"caption": "2-year Treasury rose 2 bps to 4.65%, keeping the 10–2 curve spread flat at 32 bps and suggesting no immediate Fed pivot priced in."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed funds rate unchanged at 3.63% as of early August, now stale by two weeks but consistent with a stable short-end through mid-September."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,585.73",
"caption": "S&P 500 at 7,585.73 reflects a steady equity market decoupled from rate pressure, offering no tail-risk hedge signal for rate volatility ahead."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "Lenders face renewed compression on production margins as the 30-year fixed climbs faster than long-duration Treasuries, signaling either a revaluation of mortgage credit risk or a rebalance of secondary market demand — either way, a tighter bid-ask and lower origination volume ahead unless rate locks accelerate.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 2062,
"completionTokens": 397
},
"summary": "A 5 bps jump in 30-year mortgage rates outpaced modest Treasury moves, pushing the mortgage–10Y spread to 179 bps.",
"headline": "Mortgage–Treasury Spread Widens as 30-Year Fixed Climbs to 6.76%",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 220
}05
Proof — the hash-chained record
seq #128
row_hash 663af3e3c50cef33153e30fdb29bd656ea91e810726bd67c3fbf52be3ffc5d2f
prev_hash f0449c81e2ea37482963ec0b27b9ed413265f204b169e0411e822f8ab629cb2b
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.