CWR-JSON Specification

CWR-JSON is a JSON encoding of the Common Works Registration (CWR) format — the global standard for registering musical works between publishers and collecting societies (PROs / MROs). It preserves the full semantics of CWR EDI while replacing fixed-width ASCII records with a structured, human-readable JSON document. The result is a format that can be validated with JSON Schema, consumed directly by REST APIs, and read without a CWR parser.

Please click at the bottom right to follow-through to the Introduction or jump directly to the Work metadata, Interested Parties or Sound recording sections below.

Work Metadata

Work Object

Interested Parties

Parties Object mapping in CWR-JSON

Sound Recordings

Sound Recordings mapping

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We invite music publishers, collecting societies, technology providers, and implementation partners to contact us if they want to support the initiative, test CWR-JSON in real workflows, and discuss implementation, validation, conversion, and API integration.
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Contact us about CWR-JSON