page_title: Identifiers.org
section_title: Identifier structure
hierarchical_section_title: Identifiers.org / Identifiers.org URIs and resolving system / Identifier structure
caption_attribution_description: English: Structure and examles of Identifiers.org URIs, used in life sciences.
context_page_description: Identifiers.org is a project providing stable and perennial identifiers for data records used in the Life Sciences. The identifiers are provided in the form of Uniform Resource Identifiers. Identifiers.org is also a resolving system, that relies on collections listed in the MIRIAM Registry to provide direct access to different instances of the identified records.
context_section_description: An Identifiers.org URI is formed of several parts:
  Protocol. Identifiers.org URIs are HTTP URIs and start with "http:/"
  Data collection. These are namespaces listed in the MIRIAM Registry. For instance "pubmed" for the publication resource pubmed, "ec-code" for the enzyme nomenclature and "go" for gene ontology
  Record in the collection. For instance "9606" is "3-fluorotoluene" in the collection PubChem, it is "Homo sapiens" in the collection "taxonomy" and it is a social science publication in the collection "pubmed".
  Optional: Identifiers.org URIs can be suffixed with parameters, for instance imposing which resource to use for resolving, "profiles" that control the resolver's behaviour etc.
caption: Structure and examples of Identifiers.org URIs.
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