I was wondering how one can produce a DCDM using Resolve and easyDCP. Turns out it can't be done with easyDCP Plugin nor with the standalone version. Would exporting XYZ TIFF 16bit do the trick? Is it as straightforward as that?
A 16 bit tiff in XYZ space is good for DCDM but you actually want to render 16 bit tiff RGB with a rec709 to XYZ LUT on the output if you are monitoring in Rec709. I believe the tiff XYZ is for rendering from P3.
For delivering a DCDM Tiff sequence use the the rec709 to DCI XYZ LUT as an output LUT in settings from a rec709 project. Render out 16bit RGB tiffs at your delivery size.
The XYZ tiff option is confusing but in a thread about this some time ago, one of the sage members of this group identified the above as the correct workflow. Actually, I often do the XYZ transform in easyDCP from a 709 colorspace RGB tiff sequence but if your client requires a proper DCDM then that means XYZ. Smaller producers that aren't just filling in the spec from a distributor have sometimes wanted an RGB DCDM as it's more useful (for things other than DCP) but I think it might not be officially a DCDM in that case.