Watch it decide · Ledger #10
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▰ 0.92· AUG 28, 2026, 9:03 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 — 7730.99 · 2026-08-27
03
The gate — deterministic verdict
Decision: published · computed in 6364 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": "2026-08-27",
"name": "FRED · S&P 500",
"value": 7730.99,
"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": "2026-08-27",
"unit": "index",
"label": "S&P 500",
"value": 7730.99,
"prevAsOf": "2026-08-26",
"seriesId": "SP500",
"prevValue": 7675.7
}
]
},
"briefId": 167,
"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 ticked to 6.66%, up 1 bp in a day; the spread-hold suggests no repricing of credit or servicing risk."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.67%",
"caption": "10-year Treasury at 4.67%, up 1 bp; the overnight move mirrors mortgage action, indicating broad curve steepening pressure."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.2%",
"caption": "2-year Treasury at 4.2%, also up 1 bp; the short end is locked in, keeping the curve inverted at just 47 bps."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed Funds Rate unchanged at 3.63% as of early July; no imminent policy move is pricing into near-term rate expectations."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,730.99",
"caption": "S&P 500 at 7,730.99; equity strength does not yet suggest flight to safety or duration demand tilting the curve."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "Origination economics remain compressed—the 199 bp mortgage-to-10Y spread leaves minimal room for margin or hedging profit on new production. With the 10Y–2Y curve at only 47 bps, refinance incentive is muted and servicers face persistent extension risk if rates stabilize here.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 2062,
"completionTokens": 370
},
"summary": "30-year fixed and 10-year Treasury both climbed 1 bp, leaving secondary market pricing for originators flat against benchmark risk.",
"headline": "Mortgage-Treasury Spread Holds at 199 Bps as Yields Rise in Lockstep",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 169
}05
Proof — the hash-chained record
seq #10
row_hash 636030559b519ab4a7c5ca0caac9c215c4e7122ffc52b8f3db21d6350932e78a
prev_hash f54804ffea3f0dddd614c0c09c371c5702b7e1aec20e0492792879e5175f07ed
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.