Watch it decide · Ledger #165
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▱ 0.83· JUL 31, 2026, 11:01 AM· 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 · 2026-07-30
- FRED · 10-Year Treasury — 4.67 · 2026-07-29
- FRED · 2-Year Treasury — 4.22 · 2026-07-29
- FRED · Fed Funds Rate — 3.63 · 2026-06-01
- FRED · S&P 500 — 7316.15 · 2026-07-29
03
The gate — deterministic verdict
Decision: published · computed in 15738 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": 0.83
},
"market": {
"sources": [
{
"url": "https://fred.stlouisfed.org/series/MORTGAGE30US",
"asOf": "2026-07-30",
"name": "FRED · 30-Year Fixed Mortgage",
"value": 6.66,
"seriesId": "MORTGAGE30US"
},
{
"url": "https://fred.stlouisfed.org/series/DGS10",
"asOf": "2026-07-29",
"name": "FRED · 10-Year Treasury",
"value": 4.67,
"seriesId": "DGS10"
},
{
"url": "https://fred.stlouisfed.org/series/DGS2",
"asOf": "2026-07-29",
"name": "FRED · 2-Year Treasury",
"value": 4.22,
"seriesId": "DGS2"
},
{
"url": "https://fred.stlouisfed.org/series/FEDFUNDS",
"asOf": "2026-06-01",
"name": "FRED · Fed Funds Rate",
"value": 3.63,
"seriesId": "FEDFUNDS"
},
{
"url": "https://fred.stlouisfed.org/series/SP500",
"asOf": "2026-07-29",
"name": "FRED · S&P 500",
"value": 7316.15,
"seriesId": "SP500"
}
],
"readings": [
{
"asOf": "2026-07-30",
"unit": "percent",
"label": "30-Year Fixed Mortgage",
"value": 6.66,
"prevAsOf": "2026-07-23",
"seriesId": "MORTGAGE30US",
"prevValue": 6.58
},
{
"asOf": "2026-07-29",
"unit": "percent",
"label": "10-Year Treasury",
"value": 4.67,
"prevAsOf": "2026-07-28",
"seriesId": "DGS10",
"prevValue": 4.61
},
{
"asOf": "2026-07-29",
"unit": "percent",
"label": "2-Year Treasury",
"value": 4.22,
"prevAsOf": "2026-07-28",
"seriesId": "DGS2",
"prevValue": 4.26
},
{
"asOf": "2026-06-01",
"unit": "percent",
"label": "Fed Funds Rate",
"value": 3.63,
"prevAsOf": "2026-05-01",
"seriesId": "FEDFUNDS",
"prevValue": 3.63
},
{
"asOf": "2026-07-29",
"unit": "index",
"label": "S&P 500",
"value": 7316.15,
"prevAsOf": "2026-07-28",
"seriesId": "SP500",
"prevValue": 7428.78
}
]
},
"briefId": 87,
"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 mortgage rose 8 basis points to 6.66%, extending the recent climb."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.67%",
"caption": "10-year Treasury climbed 6 basis points to 4.67%, steepening the curve modestly."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.22%",
"caption": "2-year Treasury dipped 4 basis points to 4.22%, narrowing the shorter end."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed Funds Rate held steady at 3.63%, last measured on 2026-06-01."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,316.15",
"caption": "S&P 500 closed at 7,316.15, flat in the face of rising yields."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "The 199 bps spread signals persistent lender pricing pressure: originators are holding wider hedges against prepayment and duration risk even as longer rates move higher, which may compress margins on new production and incentivize refi activity only at the highest rate levels.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 1992,
"completionTokens": 326
},
"summary": "The 30-year fixed jumped 8 basis points to 6.66% while the 10-year climbed 6 bps, pushing the mortgage–Treasury gap to its widest point in recent data.",
"headline": "Mortgage–Treasury Spread Widens to 199 bps as Rates Rise Across the Curve",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 89
}05
Proof — the hash-chained record
seq #165
row_hash 7143dee16e181718ad314219192f4b7946b02893f519f41f862b57a065248ad2
prev_hash 9d738f5772cd4c0dcf43b066a3e1dcb75eca5760506917938e24a40f893baf64
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.