CWR Deep-Dive (3/4): GRH Group Header & NWR Work Records in Detail | ALV
In this part we analyse the structure of Group Header (GRH) and New Work Registration (NWR) records. Learn how work information is precisely mapped in CWR format so your registrations are processed smoothly worldwide.
How is a CWR file structured from top to bottom? This video explains the full structure of a CWR file: transmission header, groups, and work transactions.
✅ What this video covers:
✅ HDR (transmission header) and TRL (transmission trailer) – the outer frame of every CWR file
✅ Groups: each group starts with GRH (group header) and ends with GRT (group trailer with line and transaction count)
✅ Why groups exist: to mix different types of copyright data in a single CWR file
✅ NWR records: each transaction (copyright data block) starts with NWR (New Work Registration)
✅ REV records: revision blocks for updated work information – though many systems rely on XREF/XRF IDs instead
✅ The strict order of records inside each transaction block
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The CWR Masterclass for Music Publishers:
📺 Part 1: Fundamentals & Why CWR? • CWR Fundamentals: What Music Publishers Ne...
📺 Part 2: Filename Logic & HDR Header Records: • CWR Deep-Dive (2/4): Filename Logic & HDR ...
📺 Part 3 ◀ (This video): Group Header & NWR Work Records: • CWR Deep-Dive (3/4): GRH Group Header & NW...
📺 Part 4: Publisher, Writer & Territory Records: • CWR Deep-Dive (4/4): Publisher, Writer & T...