DDEX is the technical standard that governs how music metadata is communicated between distributors, platforms, and collection societies. If your distributor does not follow it, your royalties are at risk.
What DDEX is
DDEX — the Digital Data Exchange — is a global standards-setting body that defines the technical specifications for how metadata, release information, and royalty data are communicated between parties in the music supply chain. When a distributor delivers your release to Spotify, the file it sends does not just contain the audio — it contains a structured data package describing the release: track titles, artist names, ISRCs, composer credits, publisher information, territory rights, and more. The format of that data package is defined by DDEX standards.
Why a data standard matters
Without a common standard, every platform would interpret metadata differently. A field labelled composer by one distributor might be ignored by a platform expecting songwriter. An ISRC formatted slightly differently might not be recognised. DDEX solves this by defining a common language: a set of XML-based message formats that all participating parties in the music supply chain agree to use. When metadata is delivered in a compliant DDEX format, platforms can process it automatically and accurately, reducing the risk of misattribution and data loss.
What DDEX compliance means for royalties
When a distributor delivers a release using a non-compliant or incomplete data format, the receiving platform may truncate, ignore, or misprocess certain fields. The most common victim is publisher and composer data — fields that affect publishing royalty attribution. A platform that does not receive complete publisher metadata may not pass the correct composition information to collection societies, which means the PRO cannot correctly attribute the publishing royalties generated by those streams.
The DDEX standards most relevant to independent artists
Several DDEX specifications are relevant at different points in the supply chain:
- ERN (Electronic Release Notification) — the standard for delivering release information from distributors to DSPs
- MEAD (Musical Work Rights Notification) — the standard for communicating publishing rights data between publishers and collection societies
- RDR (Royalty and Usage Reports) — the standard for reporting usage data and royalty calculations between platforms and societies
- DSIG (Digital Sales Report) — the standard format for distributor sales reporting
How to assess whether your distributor is DDEX-compliant
Most major distributors — DistroKid, TuneCore, CD Baby, Amuse, AWAL — have DDEX-compliant delivery pipelines. Budget or newer distributors may not. The most practical way to check is to look at how your releases appear on DSPs: are all metadata fields correctly populated? Are your composer and publisher credits visible on streaming platforms that display them (Apple Music shows composer credits; Spotify does not always)? Gaps in displayed metadata often indicate delivery quality issues.
What happens when metadata is delivered incorrectly
Incorrectly delivered metadata does not always cause an immediate visible problem — the track still appears on the platform and plays correctly. The damage is in the royalty accounting. A track delivered without correct ISRC mapping, publisher data, or composer credits may generate streaming income that cannot be attributed to its rights holders. The platform pays the mechanical royalty into the pool; the PRO cannot match it to your registered work; the money sits in a suspense account.
DDEX compliance and metadata administration
A metadata administrator ensures not only that your works are correctly registered with collection societies, but that the delivery pipeline from your distributor to platforms and societies maintains data integrity end-to-end. This involves checking delivery reports for data quality, identifying and correcting any fields that were dropped or corrupted in transit, and reconciling your distribution data against your society registrations to confirm that everything is matching correctly.
If you are concerned about whether your metadata is being delivered to DSPs in a way that ensures correct royalty attribution, our free Catalog Assessment will review your setup and identify any delivery quality issues.