Every entity in OpenCitations Meta (https://opencitations.net/meta) is assigned persistent internal identifier called OpenCitations Meta Identifier (OMID). The OMID has structure [[entity_type_abbreviation]]/[[supplier_prefix]][[sequential_number]]. For example, the first journal article ever processed has OMID br/0601 (the full URI is https://w3id.org/oc/meta/br/0601), where br is the abbreviation of bibliographic resource, and 060 corresponds to the supplier prefix, helpful in recognising at a glance the index it belongs to (i.e., OpenCitations Meta). Finally, 1 indicates that this is the index's first bibliographic resource ever minted.

Prefix

omid

Links

Homepage

Contact

Missing Contact

Pattern for Local Unique Identifiers

Local identifiers in OpenCitations Meta Identifier should match this regular expression:
^[a-z][a-z]/06[1-9]*0[1-9][0-9]*$

Example Local Unique Identifier

br/0601   Resolve

Pattern for CURIES

Compact URIs (CURIEs) constructed from OpenCitations Meta Identifier should match this regular expression:
^omid:[a-z][a-z]/06[1-9]*0[1-9][0-9]*$

Example CURIE

omid:br/0601

The metaregistry provides mappings between the Bioregistry and other registries. There are 1 mappings to external registries for this resource with 1 unique external prefixes.

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier br/0601 is used to demonstrate the providers available for OpenCitations Meta Identifier. A guide for curating additional providers can be found here.