it won't work, and I can give reasons why, rather than just invectives:
a. No-one would buy such a HDD.
b. You would have to be constantly in touch with the server to check every binary that you run? Lots of bandwidth!
c. A crack would be out in no-time!
all in all this is another small scheme, just like safedisk, that will con producers of s/ware into parting with their hard earned cash.
they need to realise, pirates aren't against them, they just don't want to pay over the odds for badly produced s/ware straight into the coffers of multi billionaires.
hah, hah, hah, keep laughing!