Watch it decide · Ledger #316
daily-brief · MarketData+BriefComposer
published· conf ▰▰▰▰▱ 0.89· AUG 24, 2026, 9:01 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 — 4.74 · 2026-08-21
- FRED · 2-Year Treasury — 4.24 · 2026-08-21
- FRED · Fed Funds Rate — 3.63 · 2026-07-01
- FRED · S&P 500 — 7674.37 · 2026-08-21
03
The gate — deterministic verdict
Decision: published · computed in 16122 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": 0.89
},
"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": "2026-08-21",
"name": "FRED · 10-Year Treasury",
"value": 4.74,
"seriesId": "DGS10"
},
{
"url": "https://fred.stlouisfed.org/series/DGS2",
"asOf": "2026-08-21",
"name": "FRED · 2-Year Treasury",
"value": 4.24,
"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": "2026-08-21",
"name": "FRED · S&P 500",
"value": 7674.37,
"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": "2026-08-21",
"unit": "percent",
"label": "10-Year Treasury",
"value": 4.74,
"prevAsOf": "2026-08-20",
"seriesId": "DGS10",
"prevValue": 4.69
},
{
"asOf": "2026-08-21",
"unit": "percent",
"label": "2-Year Treasury",
"value": 4.24,
"prevAsOf": "2026-08-20",
"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": "2026-08-21",
"unit": "index",
"label": "S&P 500",
"value": 7674.37,
"prevAsOf": "2026-08-20",
"seriesId": "SP500",
"prevValue": 7641.16
}
]
},
"briefId": 154,
"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 mortgage at 6.65%, down 2 bps in a day, holding despite the move in longer rates."
},
{
"kind": "Stat",
"label": "10-Year Treasury",
"value": "4.74%",
"caption": "10-year treasury climbed 5 bps to 4.74%, pushing the primary driver of mortgage-spread widening."
},
{
"kind": "Stat",
"label": "2-Year Treasury",
"value": "4.24%",
"caption": "2-year treasury also rose 5 bps to 4.24%, keeping the curve flat at 50 bps."
},
{
"kind": "Stat",
"label": "Fed Funds Rate",
"value": "3.63%",
"caption": "Fed funds rate unchanged at 3.63% as of 1 July, last reported reading held in place."
},
{
"kind": "Stat",
"label": "S&P 500",
"value": "7,674.37",
"caption": "S&P 500 at 7,674, a modest backdrop; equity strength has not yet pulled rates meaningfully higher."
}
]
},
{
"kind": "Text",
"text": "What it means for your shop",
"emphasis": "mono"
},
{
"kind": "Callout",
"text": "The 191 bp spread between 30-year mortgages and 10-year treasuries now sits at the upper end of recent trading; for originators, this signals persistent refi-aversion and tighter origination competition, while servicers face manageable but non-trivial prepay risk if treasuries reverse.",
"tone": "info"
}
]
},
"title": "markets & rates"
},
"label": "autonomous · AI-generated",
"usage": {
"promptTokens": 1992,
"completionTokens": 340
},
"summary": "Longer-dated treasuries climbed while mortgage rates held steady, pushing the rate-lock incentive wider for borrowers still on the sidelines.",
"headline": "Mortgage-Treasury Spread Widens to 191 bps as 10Y Yields Rise",
"disclaimer": "Not financial advice. Generated autonomously from public Federal Reserve data."
},
"artifactId": 156
}05
Proof — the hash-chained record
seq #316
row_hash 02a2200b36ecf3f9f7216daaed9a249d293b2f863304fffff6d6c5851666f1ec
prev_hash 327441a9742b67db14ac005c82d4f8361b73c73168a1fc5db233898261d43330
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.