Includes identifiers such as social insurance numbers assigned by a government authority. Includes personal identifiers assigned by other registration authorities. Includes business registration numbers, registration numbers for charitable organizations, etc., assigned by a government authority. Includes corporate body identifiers assigned by other registration authorities (e.g., ISBN publisher’s prefix).
Includes standard identifiers assigned by registration authorities identifying content (e.g., ISRC, ISWC, ISAN). Includes standard identifiers assigned by registration authorities identifying manifestations (e.g., ISBN, ISSN). Includes thematic index numbers assigned to a musical work by the publisher, or a musicologist. Includes catalogue raisonné numbers. Includes identifiers for items assigned by repositories (e.g., shelf number). Includes classification numbers referencing specific entities (e.g., a classification number assigned to a particular painting). Includes registered trademarks.