Watch it decide · Ledger #15
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▰ 0.92· AUG 29, 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 — 4.67 · 2026-08-27
- FRED · 2-Year Treasury — 4.2 · 2026-08-27
- FRED · Fed Funds Rate — 3.63 · 2026-07-01
- FRED · S&P 500 — 7711.76 · 2026-08-28
03
The gate — deterministic verdict
Decision: published · computed in 10402 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": 0.92
},
"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": "2026-08-27",
"name": "FRED · 10-Year Treasury",
"value": 4.67,
"seriesId": "DGS10"
},
{
"url": "https://fred.stlouisfed.org/series/DGS2",
"asOf": "2026-08-27",
"name": "FRED · 2-Year Treasury",
"value": 4.2,
"seriesId": "DGS2"
},
{
"url": "https://fred.stlouisfed.org/series/FEDFUNDS",
"asOf": "2026-07-01",
"name": "FRED · Fed Funds Rate",
"value": 3.63,
"seriesId": "FEDFUNDS"
},
{
"url": "https://fred.stlouisfed.org/series/SP500",
"asOf": "2026-08-28",
"name": "FRED · S&P 500",
"value": 7711.76,
"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": "2026-08-27",
"unit": "percent",
"label": "10-Year Treasury",
"value": 4.67,
"prevAsOf": "2026-08-26",
"seriesId": "DGS10",
"prevValue": 4.66
},
{
"asOf": "2026-08-27",
"unit": "percent",
"label": "2-Year Treasury",
"value": 4.2,
"prevAsOf": "2026-08-26",
"seriesId": "DGS2",
"prevValue": 4.19
},
{
"asOf": "2026-07-01",
"unit": "percent",
"label": "Fed Funds Rate",
"value": 3.63,
"prevAsOf": "2026-06-01",
"seriesId": "FEDFUNDS",
"prevValue": 3.63
},
{
"asOf": "2026-08-28",
"unit": "index",
"label": "S&P 500",
"value": 7711.76,
"prevAsOf": "2026-08-27",
"seriesId": "SP500",
"prevValue": 7730.99
}
]
},
"briefId": 170,
"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 1 bp to 6.66%, mirroring Treasury movement without spread widening."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.67%",
"caption": "10-year Treasury climbed 1 bp to 4.67%, setting the core anchor for mortgage pricing."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.2%",
"caption": "2-year Treasury moved 1 bp higher to 4.2%, steepening the curve only to 47 bps as medium-term yields accelerated with long rates."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed funds rate held steady at 3.63%, leaving policy unchanged and no fresh hawkish signal."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,711.76",
"caption": "S&P 500 closed at 7,711.76, extending the equity backdrop against which duration and credit risk are priced."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "The mortgage-to-10-year spread remains anchored at 199 bps, signaling stable pricing architecture despite a flatter curve; origination flow and MSR duration risk are locked in near current levels, but narrowing term premium (10Y–2Y compressed to 47 bps) hints at refinance incentive staying weak if rates stabilize here.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 2062,
"completionTokens": 370
},
"summary": "The 30-year fixed rate climbed 1 bp to 6.66%, tracking a parallel 1 bp rise in the 10-year Treasury, while the yield curve compressed to 47 bps.",
"headline": "Mortgage-to-Treasury Spread Holds Near 200 bps as Curve Flattens",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 172
}05
Proof — the hash-chained record
seq #15
row_hash efade5a6b511d636f1b7dc71480dd32aa58c84cf292725f21190353ce82840d4
prev_hash 2141d137773a7c9da7fe6b1d6eb992a0b199de8488d573d41a0fdd70c56d8020
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.