Watch it decide · Ledger #329
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▱ 0.84· AUG 26, 2026, 10:20 PM· anthropic/claude-haiku-4.5· constitution v5
01
Inputs — what it was given
{}02
Sources read — 5 cited
- FRED · 30-Year Fixed Mortgage — 6.65 · 2026-08-20
- FRED · 10-Year Treasury — 4.64 · 2026-08-25
- FRED · 2-Year Treasury — 4.17 · 2026-08-25
- FRED · Fed Funds Rate — 3.63 · 2026-07-01
- FRED · S&P 500 — 7677.28 · 2026-08-25
03
The gate — deterministic verdict
Decision: published · computed in 6152 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": 0.84
},
"market": {
"sources": [
{
"url": "https://fred.stlouisfed.org/series/MORTGAGE30US",
"asOf": "2026-08-20",
"name": "FRED · 30-Year Fixed Mortgage",
"value": 6.65,
"seriesId": "MORTGAGE30US"
},
{
"url": "https://fred.stlouisfed.org/series/DGS10",
"asOf": "2026-08-25",
"name": "FRED · 10-Year Treasury",
"value": 4.64,
"seriesId": "DGS10"
},
{
"url": "https://fred.stlouisfed.org/series/DGS2",
"asOf": "2026-08-25",
"name": "FRED · 2-Year Treasury",
"value": 4.17,
"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": "2026-08-25",
"name": "FRED · S&P 500",
"value": 7677.28,
"seriesId": "SP500"
}
],
"readings": [
{
"asOf": "2026-08-20",
"unit": "percent",
"label": "30-Year Fixed Mortgage",
"value": 6.65,
"prevAsOf": "2026-08-13",
"seriesId": "MORTGAGE30US",
"prevValue": 6.67
},
{
"asOf": "2026-08-25",
"unit": "percent",
"label": "10-Year Treasury",
"value": 4.64,
"prevAsOf": "2026-08-24",
"seriesId": "DGS10",
"prevValue": 4.7
},
{
"asOf": "2026-08-25",
"unit": "percent",
"label": "2-Year Treasury",
"value": 4.17,
"prevAsOf": "2026-08-24",
"seriesId": "DGS2",
"prevValue": 4.24
},
{
"asOf": "2026-07-01",
"unit": "percent",
"label": "Fed Funds Rate",
"value": 3.63,
"prevAsOf": "2026-06-01",
"seriesId": "FEDFUNDS",
"prevValue": 3.63
},
{
"asOf": "2026-08-25",
"unit": "index",
"label": "S&P 500",
"value": 7677.28,
"prevAsOf": "2026-08-24",
"seriesId": "SP500",
"prevValue": 7652.86
}
]
},
"briefId": 161,
"composed": {
"spec": {
"root": {
"kind": "Stack",
"children": [
{
"cols": 3,
"kind": "Grid",
"children": [
{
"kind": "Stat",
"label": "30-Year Fixed Mortgage",
"value": "6.65%",
"caption": "30-year fixed slipped 2 bps to 6.65%, lagging the Treasury selloff by over 4 bps."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.64%",
"caption": "10-year Treasury fell 6 bps to 4.64%, dragging the 10y–2y curve to just 47 bps."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.17%",
"caption": "2-year Treasury dropped 7 bps to 4.17%, signaling softer near-term rate expectations."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed funds unchanged at 3.63%, keeping policy anchored while long rates drift."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,677.28",
"caption": "S&P 500 at 7,677—equity stability amid yield decline offers no new prepay signal."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "Lenders face persistent rate compression in origination: borrowers see only marginal mortgage relief despite Treasury rally, which narrows refi incentive and pressures purchase volume unless Treasury yields sustain a sharper decline. Wider mortgage spreads also signal elevated prepay risk and hedging costs if rates stabilize here.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 2062,
"completionTokens": 354
},
"summary": "The 10-year Treasury fell 6 bps to 4.64% while the 30-year fixed mortgage ticked down just 2 bps, leaving the spread between them at 201 bps—near the upper end of recent ranges.",
"headline": "Mortgage-Treasury Spread Widens as Long-End Yields Compress",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 163
}05
Proof — the hash-chained record
seq #329
row_hash 09871926e3ca95e9aefd09e8c3015c87189685e5c65c28f475b9323992a65a64
prev_hash 686e5b8173c2d91eec16e41828aaa2b9b8dff12b8daa51f06815f3e7e238d656
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.