Permanent identifier
One identifier remains attached to the same resolved entity across updates.
GSEIN standard
A permanent identity layer for changing entity data
The identifier stays stable while legal names, addresses, statuses, sources and verification evidence can evolve over time.
Core principles
Identity first. Evidence always.
GSEIN is designed as an interoperability identifier rather than a replacement for national registration numbers.
Identity resolution
Conflicting or duplicate source records are resolved before identifier issuance.
Source provenance
Information shown in a GSEIN verification result remains linked to its authoritative source and verification basis.
Disclosure separation
Identifier issuance and disclosure through GSEIN verification remain separate decisions.
Identifier format
GSEIN-XXXX-XXXX-XXXX-XXXX
The format contains a stable 16-digit identifier. The final two digits support MOD 97-10 validation so malformed identifiers can be detected before use.
Entity information layers
The model separates core entity identity from legal form, jurisdiction and registration, address and activity, external public identifiers, and verification/status information.
Verification before issuance
Identifier issuance follows identity resolution and verification. A GSEIN verification result is shown only when the applicable verification and disclosure requirements are satisfied.
Disclosure through GSEIN verification is a separate legal gate
Issuance of a GSEIN does not by itself authorize display of entity information. Information may appear through GSEIN verification only when the applicable legal, licensing and disclosure requirements are satisfied.