I don’t know if this is useful or not to you but I wrote a shelf tool a while ago that lets you select multiple images and ocio convert / write them with COPs, I use it fairly often, feel free to steal and share 🙂
Attachments in this post:
http://fx-td.com/houdiniandchill/wp-content/uploads/discord/20233806/22/23/cop_ocio_convert.py