On Monday I had posted about supercomputing has taken over the miner queue. And dev acknowledge that "shortcut" was exploited by him.
Since yesterday, as I noticed supercomputing is winding down, another name show up in the miner queue gxt-1080-sc. After a close look, I believed his is supercomputing.
Because their signing key is identical.
this is supercomputing99 's signing key:
this is gxt-1080-sc's signing key:
Now his miner does not require update each time signing a block.
this is supercomputing99 's mining info page:
this is gxt-1080-sc 's mining info page:
His new name suggested that he has a GPU miner(IMO).
Now he has more than 200 miners, is this possible a prelude to something BIG? like witness attack.