Watch it decide · Ledger #215
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▱ 0.84· SEP 30, 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 — 7.03 · 2026-09-24
- FRED · 10-Year Treasury — 5.26 · 2026-09-29
- FRED · 2-Year Treasury — 4.89 · 2026-09-29
- FRED · Fed Funds Rate — 3.63 · 2026-08-01
- FRED · S&P 500 — 7670.84 · 2026-09-29
03
The gate — deterministic verdict
Decision: published · computed in 11416 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": 0.84
},
"market": {
"sources": [
{
"url": "https://fred.stlouisfed.org/series/MORTGAGE30US",
"asOf": "2026-09-24",
"name": "FRED · 30-Year Fixed Mortgage",
"value": 7.03,
"seriesId": "MORTGAGE30US"
},
{
"url": "https://fred.stlouisfed.org/series/DGS10",
"asOf": "2026-09-29",
"name": "FRED · 10-Year Treasury",
"value": 5.26,
"seriesId": "DGS10"
},
{
"url": "https://fred.stlouisfed.org/series/DGS2",
"asOf": "2026-09-29",
"name": "FRED · 2-Year Treasury",
"value": 4.89,
"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": "2026-09-29",
"name": "FRED · S&P 500",
"value": 7670.84,
"seriesId": "SP500"
}
],
"readings": [
{
"asOf": "2026-09-24",
"unit": "percent",
"label": "30-Year Fixed Mortgage",
"value": 7.03,
"prevAsOf": "2026-09-17",
"seriesId": "MORTGAGE30US",
"prevValue": 6.95
},
{
"asOf": "2026-09-29",
"unit": "percent",
"label": "10-Year Treasury",
"value": 5.26,
"prevAsOf": "2026-09-28",
"seriesId": "DGS10",
"prevValue": 5.24
},
{
"asOf": "2026-09-29",
"unit": "percent",
"label": "2-Year Treasury",
"value": 4.89,
"prevAsOf": "2026-09-28",
"seriesId": "DGS2",
"prevValue": 4.92
},
{
"asOf": "2026-08-01",
"unit": "percent",
"label": "Fed Funds Rate",
"value": 3.63,
"prevAsOf": "2026-07-01",
"seriesId": "FEDFUNDS",
"prevValue": 3.63
},
{
"asOf": "2026-09-29",
"unit": "index",
"label": "S&P 500",
"value": 7670.84,
"prevAsOf": "2026-09-28",
"seriesId": "SP500",
"prevValue": 7683.69
}
]
},
"briefId": 256,
"composed": {
"spec": {
"root": {
"kind": "Stack",
"children": [
{
"cols": 3,
"kind": "Grid",
"children": [
{
"kind": "Stat",
"label": "30-Year Fixed Mortgage",
"value": "7.03%",
"caption": "30-year fixed mortgage reached 7.03%, up 8 bps in one session—the largest single-day jump in weeks, narrowing origination volume incentives at purchase and refi."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "5.26%",
"caption": "The 10-year Treasury ticked to 5.26% (up 2 bps), anchoring the long end of the mortgage curve and outpacing shorter-duration moves."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.89%",
"caption": "The 2-year held firm at 4.89% (down 3 bps), leaving the 10–2 spread at a flat 37 bps—a compressed curve that signals tight credit and weak refinance demand."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed Funds rate unchanged at 3.63%, reflecting a steady policy stance amid the market's repricing at the longer end."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,670.84",
"caption": "S&P 500 closed at 7,670.84, showing equities resilient despite the rise in rates and Treasury volatility."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "The sharp daily move in mortgage rates—driven by a 2 bps rise in the 10-year—signals renewed volatility in origination economics; servicers face tighter MSR hedging windows as the curve flattens and prepayment models grow more sensitive to small day-to-day swings.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 2062,
"completionTokens": 415
},
"summary": "The 30-year fixed jumped 8 bps in a single day while the 10–2 curve compressed further, narrowing refinance incentive and sharpening rate-risk management challenges for servicers.",
"headline": "Mortgage rates spike to 7.03% as long-end Treasuries climb; curve flattens to 37 bps",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 258
}05
Proof — the hash-chained record
seq #215
row_hash e96e98e487301a7cb594772bf4046d31d321076f87f5f1baa3bfba184bf6f9f8
prev_hash ae7ba9de43bb784b4d51f00a3af9ffa5d99a637485e3f71cb9af794917d01bcc
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.