Extensible Resource Identifier (XRI)

XRI is n open standard language for interoperable digital identifiers developed under OASIS. The purpose of the OASIS Extensible Resource Identifier Technical Committee (XRI TC) is to define a URI-compatible identifier scheme and resolution protocol for abstract identifiers, i.e., identifiers that are location-, application-, and transport-independent, and thus can be shared across any number of domains and directories. The TC is also defining an extension of the generic resolution protocol for trusted resolution, and a special set of identifiers for XRI metadata (identifiers that describe other identifiers).

The XRI Syntax specification is based on the URI (Uniform Resource Identifier) specification, RFC 3986, and the IRI (Internationalized Resource Identifier) specification, RFC 3987.