How long is this being mined for?
It is halving each 7 days with the following rewards structure:
BLOCK REWARDS
Block 1 - 3263: Random 500 5000 (1 minute blocks)
Block 3264 - 22000: Random 1000 10000 (Begin 2 minute blocks)
Block 22001 - 34750: Static reward 5000
Block 34751 - 39791: Static reward 2500
Block 39792 - 44832: Static reward 1250
Block 44833 - 49873: Static reward 625
Block 49874 - 54914: Static reward 312.50
Block 54915 - 59955: Static reward 156.25
Block 59956 - 64996: Static reward 78.125
Block 64997 - 70037: Static reward 39.0625
Block 70038 - 332838: static reward 20
Halving every 262800 blocks