Mining pool Sparkpool received a payment in excess of 2000 ETH per production unit #7 238 290. This is 600 times higher than the standard reward network 3 ETH. This is evidenced by data Explorer blocks Blocksсout.

So, pool is included in the block 210, transaction and received 2103,1485 ETH. This incident instantly acquired different versions.

Co-founder decentralized application IOST Jimmy Chong suggested that one or more users accidentally install a Commission for their transaction at a very high level.

A whopping 2,100 #ETH(~$300k) tip was just paid to the miners on the #Ethereum network. What a generous guest… or mistake. @coindeskevents @coindesk

— Jimmy Zhong (@jimmyzhong_iost) 19 Feb 2019

Other observers do not exclude that someone could anonymously support a community of miners. Skeptics argue that attackers could, therefore to launder money.

Recall that in late February in Ethereum should be hardwork Constantinople, which will decrease the reward of miners with up to 3 ETH 2 ETH for the block.