Optical recording medium, optical recording medium production method, optical recording medium production apparatus, program, and medium

摘要

There are some cases that an accuracy is low for reading unique information identifying an individual from an optical disk which comprises a plurality of information layers. The optical disk according to the present invention is an optical disk which comprises a first information layer 102 and a second information layer 104 for holding information so that by means of incident light, (1) the information will be reproduced or (2) the information will be recorded and reproduced, and which comprises a BCA area which is formed in the first information layer 102 and in which individual identification information 106 uniquely given to the optical disk is recorded.