# External source check (ARR-PREPAY-20260831)

Checked 2026-09-04 with `scripts/verify-external-sources.py` (GET, follow redirects, 25s timeout). None of these pages audited this fixture. Machine log: [`external-source-check-ARR-PREPAY-20260831.json`](./external-source-check-ARR-PREPAY-20260831.json).

| Source | Requested URL | Final URL | HTTP | Title SHA-256 | Note | Use |
|---|---|---|---|---|---|---|
| Data | https://data.worldbank.org/ | https://data.worldbank.org/ | 200 | b28a5bfeec6a3c9e |  | Dated-series analogy |
| Economic data | https://fred.stlouisfed.org/ | https://fred.stlouisfed.org/ | 200 | d4d9c1e39b663def |  | Vintage analogy |
| Data | https://www.federalreserve.gov/data.htm | https://www.federalreserve.gov/data.htm | 200 | a1080af69a6db9d9 |  | Publication context |
| Statistics | https://www.bis.org/statistics/ | https://www.bis.org/statistics | 200 | f38b9fb77a6330a3 |  | Method-note context |
| Data | https://www.cdc.gov/nchs/data/ | https://www.cdc.gov/nchs/data/ | 403 | d134ca025a6c63b2 | http 403 | Definition and suppression analogy |

Keep original requested URLs. Re-check at decision time.