With the fourth adjustment for 2015 occurring today, the Bitcoin mining difficulty has grown to a new ATH of 46,684,376,317. This is an increase of 5.01% over February 9th's previous ATH of 44,455,415,962. The global hash rate as of the change stands at 334,179,783 GH/s.1
The block height stands at 344737 with a remaining 75263 blocks to be mined prior to the reward halving. The next reward halving event is forecast to occur in July or August of 2016.
An average over the last 504 blocks. ↩