Corporate relationship start date
Date on which a reported corporate relationship began for the stated period type.
Sources that carry it
3 sourcesPublic global REST/JSON:API access to the Golden Copy-derived LEI search engine. Organisations can be selected by LEI or searched by legal-entity fields; singular responses expose Level 1 identity/status and reported direct/ultimate accounting-consolidating parent Relationship Records. No beneficial-owner or transitive graph inference is made.
Global CC0 full/delta file family published three times daily in CSV, JSON, and XML. One product includes Level 1 LEI-CDF, Level 2 RR-CDF relationship records, and reporting exceptions, with exact scalar leaves inside documented repeated periods and qualifiers. Relationships are reported accounting-consolidation relationships, not inferred beneficial ownership.
Nationwide bulk data listing coal and metal/non-metal mines tracked by MSHA from January 1, 1970 to the present, including mine identity, status, ownership, location, commodities, staffing, and physical and operational characteristics.
Questions it helps answer
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