One entity. One durable identity.

A transparent, source-linked registry for identifying legal entities across jurisdictions.

Standard Methodology

Persistent by design

The identifier never encodes a name, country, sector, or status that could later change.

Evidence before issuance

Every approved identity must resolve to an authoritative registration source and verification history.

Interoperable, not extractive

GSEIN links existing identifiers and publishes provenance instead of obscuring where data came from.

Structure check

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GSEIN identifier

Canonical, compact, lowercase, and space-separated forms are accepted.

Enter a GSEIN to begin.

A valid checksum does not mean the identifier was issued, reserved, or linked to a verified entity.

Registry

Connect the records the world already trusts.

GSEIN is conceived as a crosswalk: one durable identity record that can reference national company numbers, LEIs, tax identifiers where legally publishable, and classification codes such as ISIC.

Methodology

Illustrative record graph

Authoritative sources

National registries · LEI · Tax

GSEIN

GSEIN-8293-1049-5820-75