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

| Source | Requested URL | Final URL | HTTP | Title SHA-256 | Note | Use |
|---|---|---|---|---|---|---|
| NIST Cloud Computing Reference Architecture | https://www.nist.gov/publications/nist-cloud-computing-reference-architecture | https://www.nist.gov/publications/nist-cloud-computing-reference-architecture | 200 | a65c56bd1cc67b5a |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| NIST Big Data Interoperability Framework Reference Architecture | https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.1500-6r1.pdf | https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.1500-6r1.pdf | 200 | — |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| BigQuery introduction | https://cloud.google.com/bigquery/docs/introduction | https://docs.cloud.google.com/bigquery/docs/introduction | 200 | cfc2411f7878ef09 |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| BigQuery query plan explanation | https://docs.cloud.google.com/bigquery/docs/query-plan-explanation | https://docs.cloud.google.com/bigquery/docs/query-plan-explanation | 200 | 79ff2a79059a14e5 |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| BigQuery Jobs API | https://cloud.google.com/bigquery/docs/reference/rest/v2/jobs | https://docs.cloud.google.com/bigquery/docs/reference/rest/v2/jobs | 200 | 08da8853fb9c6ac2 |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| Snowflake key concepts | https://docs.snowflake.com/en/user-guide/intro-key-concepts | https://docs.snowflake.com/en/user-guide/intro-key-concepts | 200 | e81f344e739d7c57 |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| Snowflake QUERY_HISTORY | https://docs.snowflake.com/en/sql-reference/account-usage/query_history | https://docs.snowflake.com/en/sql-reference/account-usage/query_history | 200 | 4803510382f1ca44 |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| Amazon Redshift system architecture | https://docs.aws.amazon.com/redshift/latest/dg/c_high_level_system_architecture.html | https://docs.aws.amazon.com/redshift/latest/dg/c_high_level_system_architecture.html | 200 | e791d5b47ab27720 |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| Amazon Redshift STL_QUERY | https://docs.aws.amazon.com/redshift/latest/dg/r_STL_QUERY.html | https://docs.aws.amazon.com/redshift/latest/dg/r_STL_QUERY.html | 200 | aa6200c0e1207ab8 |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| Apache Parquet overview | https://parquet.apache.org/docs/overview/ | https://parquet.apache.org/docs/overview/ | 200 | 57143361bfdf4a41 |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| Apache Iceberg specification | https://iceberg.apache.org/spec/ | https://iceberg.apache.org/spec/ | 200 | f1482a70f4dd47f7 |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |
| DuckDB Parquet overview | https://duckdb.org/docs/stable/data/parquet/overview | https://duckdb.org/docs/stable/data/parquet/overview | 200 | 0d83b98bebfb5add |  | Documents its own architecture, format, service concept, or evidence interface; does not validate this decision record. |

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