---
updatedAt: 2026-10-02T17:39:49.000Z
agentTools:
  projectIndex: https://docs.verimatrix.com/llms.txt
---

# CPIX Query Parameters

### "playreadyVersion"

Valid values:

* 4.3.0.0
* 4.2.0.0
* 4.1.0.0
* 4.0.0.0

Default: 4.0.0.0

Where possible, PlayReady version should be set to 4.2.0.0 or above where multiple keys are available.

If the CBCS is used as a cipher algorithm then the 4.3.0.0 header is enforced.