/usr/include/open-trace-format/ is in libopen-trace-format-dev 1.12.5+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/open-trace-format/OTFAUX_MsgMatching.h
/usr/include/open-trace-format/OTFAUX_State.h
/usr/include/open-trace-format/OTFAUX_Thumbnail.h
/usr/include/open-trace-format/OTF_CopyHandler.h
/usr/include/open-trace-format/OTF_CopyHandler_stream.h
/usr/include/open-trace-format/OTF_Definitions.h
/usr/include/open-trace-format/OTF_Errno.h
/usr/include/open-trace-format/OTF_File.h
/usr/include/open-trace-format/OTF_FileManager.h
/usr/include/open-trace-format/OTF_File_iofsl.h
/usr/include/open-trace-format/OTF_Filenames.h
/usr/include/open-trace-format/OTF_HandlerArray.h
/usr/include/open-trace-format/OTF_KeyValue.h
/usr/include/open-trace-format/OTF_MasterControl.h
/usr/include/open-trace-format/OTF_RBuffer.h
/usr/include/open-trace-format/OTF_RStream.h
/usr/include/open-trace-format/OTF_Reader.h
/usr/include/open-trace-format/OTF_Version.h
/usr/include/open-trace-format/OTF_WBuffer.h
/usr/include/open-trace-format/OTF_WStream.h
/usr/include/open-trace-format/OTF_Writer.h
/usr/include/open-trace-format/OTF_inttypes.h
/usr/include/open-trace-format/OTF_inttypes_unix.h
/usr/include/open-trace-format/otf.h
/usr/include/open-trace-format/otfaux.h