Watch it decide · Ledger #43
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▱ 0.84· SEP 2, 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 — 6.66 · 2026-08-27
- FRED · 10-Year Treasury — 4.79 · 2026-09-01
- FRED · 2-Year Treasury — 4.39 · 2026-09-01
- FRED · Fed Funds Rate — 3.63 · 2026-08-01
- FRED · S&P 500 — 7631.47 · 2026-09-01
03
The gate — deterministic verdict
Decision: published · computed in 17995 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": "2026-08-27",
"name": "FRED · 30-Year Fixed Mortgage",
"value": 6.66,
"seriesId": "MORTGAGE30US"
},
{
"url": "https://fred.stlouisfed.org/series/DGS10",
"asOf": "2026-09-01",
"name": "FRED · 10-Year Treasury",
"value": 4.79,
"seriesId": "DGS10"
},
{
"url": "https://fred.stlouisfed.org/series/DGS2",
"asOf": "2026-09-01",
"name": "FRED · 2-Year Treasury",
"value": 4.39,
"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": "2026-09-01",
"name": "FRED · S&P 500",
"value": 7631.47,
"seriesId": "SP500"
}
],
"readings": [
{
"asOf": "2026-08-27",
"unit": "percent",
"label": "30-Year Fixed Mortgage",
"value": 6.66,
"prevAsOf": "2026-08-20",
"seriesId": "MORTGAGE30US",
"prevValue": 6.65
},
{
"asOf": "2026-09-01",
"unit": "percent",
"label": "10-Year Treasury",
"value": 4.79,
"prevAsOf": "2026-08-31",
"seriesId": "DGS10",
"prevValue": 4.75
},
{
"asOf": "2026-09-01",
"unit": "percent",
"label": "2-Year Treasury",
"value": 4.39,
"prevAsOf": "2026-08-31",
"seriesId": "DGS2",
"prevValue": 4.34
},
{
"asOf": "2026-08-01",
"unit": "percent",
"label": "Fed Funds Rate",
"value": 3.63,
"prevAsOf": "2026-07-01",
"seriesId": "FEDFUNDS",
"prevValue": 3.63
},
{
"asOf": "2026-09-01",
"unit": "index",
"label": "S&P 500",
"value": 7631.47,
"prevAsOf": "2026-08-31",
"seriesId": "SP500",
"prevValue": 7686.14
}
]
},
"briefId": 181,
"composed": {
"spec": {
"root": {
"kind": "Stack",
"children": [
{
"cols": 3,
"kind": "Grid",
"children": [
{
"kind": "Stat",
"label": "30-Year Fixed Mortgage",
"value": "6.66%",
"caption": "30-year fixed at 6.66%, up 1 bp in one day—essentially anchored despite Treasury moves."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.79%",
"caption": "10-year Treasury climbed to 4.79%, up 4 bps; 2-year rose 5 bps to 4.39%, tightening the curve to just 40 bps."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.39%"
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed funds rate unchanged at 3.63%, leaving policy stable as the front end steepens relative to policy."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,631.47",
"caption": "S&P 500 at 7,631.47, marking a calm backdrop as fixed income takes the focus."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "The flat curve and sticky mortgage rate signal muted refinance incentive—origination will remain purchase-driven. Servicers face persistent prepay pressure if rates hold here, while the narrow mortgage–Treasury spread (187 bps) leaves limited room for margin compression in a refinance spike.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 2062,
"completionTokens": 308
},
"summary": "Treasuries climbed across the curve while the 30-year mortgage barely budged, compressing the 10-2 spread to 40 basis points.",
"headline": "Mortgage Rate Holds at 6.66% as Treasury Curve Flattens Further",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 183
}05
Proof — the hash-chained record
seq #43
row_hash 451e92621357f63e912c59aa1046b3b72d7a9b75b8c0f4d14eeb17cc2c8e23d6
prev_hash c57fb7df30919dc9b12c10be48a60ff8119f1f422d2337668bb525d6b490d430
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.