Content generation device for registering information in block chain, control method therefor, and program

[Problem] To provide a content generation device capable of easily confirming content in which information has been registered in a block chain. [Solution] An imaging apparatus (102) generates a hash value of an image file immediately after generating the image file, and transmits image file information including the hash value to a management system (101). Upon receiving a registration completion notification for indicating completion of a process for registering image file information in a block chain, the image pickup apparatus (102) adds registration completion information for indicating that the image file information has been registered in the block chain to the image file. [问题]提供了一种能够容易地确认信息已经被登记在区块链中的内容的内容生成设备。[解决方案]摄像设备(102)在生成图像文件之后立即生成图像文件的散列值，并将包括散列值的图像文件信息传输到管理系统(101)。摄像设备(102)在接收到用于指示将图像文件信息登记到区块链的处理完成的登记完成通知时，将用于指示图像文件信息已经登记到区块链的登记完成信息添加到图像文件。