Watch it decide · Ledger #101
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▰ 0.92· SEP 12, 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 — 6.76 · 2026-09-10
- FRED · 10-Year Treasury — 4.95 · 2026-09-10
- FRED · 2-Year Treasury — 4.56 · 2026-09-10
- FRED · Fed Funds Rate — 3.63 · 2026-08-01
- FRED · S&P 500 — 7656.98 · 2026-09-11
03
The gate — deterministic verdict
Decision: published · computed in 7802 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": "2026-09-10",
"name": "FRED · 30-Year Fixed Mortgage",
"value": 6.76,
"seriesId": "MORTGAGE30US"
},
{
"url": "https://fred.stlouisfed.org/series/DGS10",
"asOf": "2026-09-10",
"name": "FRED · 10-Year Treasury",
"value": 4.95,
"seriesId": "DGS10"
},
{
"url": "https://fred.stlouisfed.org/series/DGS2",
"asOf": "2026-09-10",
"name": "FRED · 2-Year Treasury",
"value": 4.56,
"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": "2026-09-11",
"name": "FRED · S&P 500",
"value": 7656.98,
"seriesId": "SP500"
}
],
"readings": [
{
"asOf": "2026-09-10",
"unit": "percent",
"label": "30-Year Fixed Mortgage",
"value": 6.76,
"prevAsOf": "2026-09-03",
"seriesId": "MORTGAGE30US",
"prevValue": 6.71
},
{
"asOf": "2026-09-10",
"unit": "percent",
"label": "10-Year Treasury",
"value": 4.95,
"prevAsOf": "2026-09-09",
"seriesId": "DGS10",
"prevValue": 4.83
},
{
"asOf": "2026-09-10",
"unit": "percent",
"label": "2-Year Treasury",
"value": 4.56,
"prevAsOf": "2026-09-09",
"seriesId": "DGS2",
"prevValue": 4.43
},
{
"asOf": "2026-08-01",
"unit": "percent",
"label": "Fed Funds Rate",
"value": 3.63,
"prevAsOf": "2026-07-01",
"seriesId": "FEDFUNDS",
"prevValue": 3.63
},
{
"asOf": "2026-09-11",
"unit": "index",
"label": "S&P 500",
"value": 7656.98,
"prevAsOf": "2026-09-10",
"seriesId": "SP500",
"prevValue": 7591.7
}
]
},
"briefId": 209,
"composed": {
"spec": {
"root": {
"kind": "Stack",
"children": [
{
"cols": 3,
"kind": "Grid",
"children": [
{
"kind": "Stat",
"label": "30-Year Fixed Mortgage",
"value": "6.76%",
"caption": "30-year fixed mortgage at 6.76%, up 5 bps in one day."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.95%",
"caption": "10-year Treasury at 4.95%, up 12 bps in one day."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.56%",
"caption": "2-year Treasury at 4.56%, up 13 bps in one day."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%"
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,656.98",
"caption": "S&P 500 at 7,656.98 as of September 11."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "The 181 bps mortgage–10Y spread leaves origination margins compressed; a flattening curve typically narrows that spread further, so any steepening relief is temporary—operators should watch whether the 10Y holds above 4.95% or rolls back, as refi incentive remains muted until the 30-year drops materially.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 2062,
"completionTokens": 276
},
"summary": "Long-end yields rose faster than short-end overnight, pushing the 10Y–2Y curve to 39 bps and mortgage rates to 6.76%.",
"headline": "Mortgage Spread Widens as Treasury Curve Steepens",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 211
}05
Proof — the hash-chained record
seq #101
row_hash a8ae87b54a307a9e20a0576c385ada877940b64c19c7d18009b410f058413d46
prev_hash 2e290aad384724e87d7e398e7e13cd204e40f5939bd1b4c281938e35e7fc8a3f
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.