CosmosCoin blocks only need 30 confirms.

it seems running well in my pool until about 2 days ago.

Then somethings happened, a long block chain about 800 to 900 already confirmed blocks suddenly become orphans, when this occur, the CMC daemon program will crash, all transactions in the chain which already confirmed will become 0 confirms.

The difficulty of the coin then from 1.5 or so down to 0.1 or 0.2.

This happened about 3 times in the past 2 days. more than 2000 blocks even they already have 1000 confirms orphaned.


Why this happen? it have been attcked? or the chain been killed by POS?