As of block (52+30)*7*24*60 = 826560, the graph_weight of C31 has fallen to 0,
making it impossible to solve blocks with C31.
Congratulations to the miner of block https://grinscan.net/block/826450
the last ever C31 block in Grin!
Although it really didn’t make sense to be mining C31 in the past week, where its graph_weight was 31 times less than before the phase-out. We suspect that even now, some people may still be mining C31, unaware that it’s a complete waste of electricity. At least the above miner got some bragging rights.
https://www.f2pool.com/coins is advised to remove the entry for C31.
I’ll be just a little sad to see only two grinning smilies instead of the current three in a row.
EDIT: They did in fact remove it…