0.3.0 release

Welcome to the Open Fibre Data Standard 0.3.0 release.

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In OFDS, there are two types of identifier: global identifiers and local identifiers.

Global identifiers

The following identifiers are globally unique:

Network identifier

To ensure that a network’s .id is globally unique, it must be a universally unique identifier as defined by RFC 4122.

Network identifiers should be consistent across each version of the data about a network.

For more information, see how to generate universally unique identifiers.

Organisation identifiers

To ensure that an organisation’s .identifier is globally unique, it has two components:









The identifier assigned to the organisation in the register identified in .scheme.




The register from which the identifier in .id is drawn, from the open organisationIdentifierScheme codelist.

The following example shows the .identifier for an organisation registered at Ghana’s Registrar General’s Department, the scheme code for which is GH-RGD:

    "id": "CS111111111",
    "scheme": "GH-RGD",
    "legalName": "FibreCo Ghana Limited",
    "uri": ""

The .identifier.scheme field ensures that the identifier is globally unique, even if the same identifier appears in more than one scheme.

Local identifiers

Most identifiers in OFDS only need to be unique among the identifiers used for the same type of object within the same scope. For example, node identifiers only need to be unique with the scope of the .nodes array. Uniqueness constraints are specified in the description of each identifier.

Some local identifiers are used for cross-referencing. For example, an organisation’s .id is a local identifier used for cross-referencing from fields such as