ocid

gs:ocid Property

Open Contracting ID: a globally unique identifier for a contracting process, carrying a registered publisher prefix. The join key that makes OCDS data aggregatable across publishers.

Identifier (IRI)
https://schema.govfresh.com/v1/ocid
Subproperty of
schema:identifier
Used on
gs:ContractingProcess
Value
schema:Text
Profile
procurement

The full definition is in the vocabulary file (Turtle). A static host cannot choose a format by request, so this page and that file are the two ways to read it.