I dont think the sysctl unix commands offer any info on your systems bluetooth address.

Apple have a specific framework to work with bluetooth devices, I've posted a link below,
I hav'nt used ths framework myself, so I cant offer any advise with using it.

https://developer.apple.com/library/...uid/TP30000997

it would be worth trying some google searches for bluetooth unix commands.

Good luck with it.

Regards Mark