I have already exposed multiple cases of alt accounts participating in 1xbit campaigns ^{[1, 2, 3]}, so this is not surprising. Moreover, I wouldn't be surprised to find out that these accounts are all controlled by only a few people, possibly even 1xbit himself.

One of the things that is interesting about 1xbit campaigns is that they are all funded from Binance addresses and most of the money ends up at coins.ph addresses.