# External source check (HTS-SOR-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-HTS-SOR-20260831.json`](./external-source-check-HTS-SOR-20260831.json).

| Source | Requested URL | Final URL | HTTP | Title SHA-256 | Note | Use |
|---|---|---|---|---|---|---|
| glTF | https://www.khronos.org/gltf/ | https://www.khronos.org/gltf/ | 200 | 523424b0c1cf92a2 |  | Published-contract analogy |
| PNG | https://www.w3.org/TR/png/ | https://www.w3.org/TR/png/ | 200 | 6799b12e0757389a |  | File-structure analogy |
| Standards catalog | https://www.iso.org/standards.html | https://www.iso.org/standards.html | 403 | 301dc171e5fa8c5f | http 403 | Catalog-record context |
| FIPS 140-3 | https://csrc.nist.gov/publications/detail/fips/140/3/final | https://csrc.nist.gov/pubs/fips/140-3/final | 200 | c9d7dc1541e98ce5 |  | Cryptographic-module context |
| Publications | https://www.enisa.europa.eu/publications | https://www.enisa.europa.eu/publications | 200 | d0324d58eb51989a |  | Dated-publication context |
| Top 10 for LLM Applications | https://owasp.org/www-project-top-10-for-large-language-model-applications/ | https://owasp.org/www-project-top-10-for-large-language-model-applications/ | 200 | 87974d0c19dc6a5c |  | Untrusted-text risk context |

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