Well, statistics teaches us that randomly clicking octo explorer transactions will likely show the wallet with the currently highest hashrate.
it's this one: http://explorer.octocoin.org/address/8NQcJrZgyqJYiNXUuXtbQXn3AKufTSXqmT
but, the octo explorer somehow doen't show it

EDIT:

if anyone has some spare time he could try to trace back this address. if it leads to the first days/weeks it is likely the devs wallet and it means they are still mining with lots of hashrate.