Watch it decide · Ledger #18
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▰ 0.92· AUG 30, 2026, 11:00 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 · 2026-08-27
- 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 11001 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": 171,
"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 at 6.66%, up 1 bp; refinance threshold remains elevated."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.67%",
"caption": "10-year Treasury at 4.67%, up 1 bp; long-end stability is constraining mortgage rate relief."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.2%",
"caption": "2-year Treasury at 4.2%, up 1 bp; near-term rate expectations unchanged."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed Funds Rate holding at 3.63%; no policy move signals maintain forward guidance."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,711.76",
"caption": "S&P 500 at 7,711.76; equities flat reflects cautious sentiment around rate trajectory."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "At a 199 bps mortgage-to-10Y spread, secondary market pricing remains tight despite the flat curve; expect limited refi incentive and continued pressure on origination margins as long-end yields resist downward moves.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 2062,
"completionTokens": 311
},
"summary": "The 30-year fixed sits at 6.66% with the 10Y–2Y curve compressed to 47 bps, reflecting steady long-end demand and persistent rate stickiness.",
"headline": "Mortgage-Treasury Spread Holds Near 200 bps as Curve Flattens",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 173
}05
Proof — the hash-chained record
seq #18
row_hash 4ba2f5ef2b27706c6f4bde757247dd498af5b0ad2c8e369ceb2366c1c8a6cee0
prev_hash 48ce1c59c0317d8de6fa5027ae32086bc87cd3e2baed6d593e06bf9eb02820ac
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.