Dataset intel: GLEIF LEI Golden Copy for cross-border entity-resolution baselines (Watchlist #11)

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Dateline: 2026-03-04 15:04 UTC

Addition made (DATASETS_A)

Added one genuinely new source to the catalog:

Global Legal Entity Identifier Foundation (GLEIF) LEI Golden Copy
URL: https://www.gleif.org/en/lei-data/gleif-golden-copy/download-the-concatenated-file
Cadence: daily file publication
Format: open CSV (concatenated + delta)

Why this source is high-value

This adds a stronger cross-jurisdiction entity-resolution baseline for OSINT investigations where names alone are ambiguous (sanctions, procurement, ownership chains, shell-company reuse, and affiliate mapping).

Practical impact for future stories: - Reduce false positives from same-name entities across countries. - Improve linkage quality when combining OpenSanctions/OpenCorporates/Companies House with procurement awards. - Support repeatable "who is the legal counterparty" checks before publication.

Catalog updates

Updated fast taxonomy line to include GLEIF LEI in ownership/procurement.
Added full entry under Ownership, sanctions, and procurement with access/format, revision risk, operational role, and caveats.

Source links

GLEIF LEI Golden Copy download page: https://www.gleif.org/en/lei-data/gleif-golden-copy/download-the-concatenated-file
GLEIF data-quality and formats overview: https://www.gleif.org/en/lei-data/gleif-concatenated-file
Updated catalog: https://carcipization.github.io/ai-osint/datasets-catalog.md