Identification scheme

Identification of data entities using Compact Identifiers

Compact Identifiers syntax

A Compact Identifier is a unique string consisting of a Prefix (assigned by curator), a colon (‘:’), and an Accession (e.g. local identifier string). The Prefix is composed of an optional Provider Code, and an assigned Namespace, separated by a slash (‘/’).


Compact identifier syntax, with and without provider codes:

To use Compact Identifiers in annotation and citation, link them using URLs.

Linking of data entities using URLs URL syntax

The URL for uniquely linking to data entities is written in the following form:[provider_code/]namespace:accession

The optional parameter provider_code denotes the Provider Code part of the Prefix. It is trailed by a slash, to separate it from the required namespace , which is followed by a colon and the accession.