An Idea Is Born
Marek starts mining bitcoins on his own but realizes that mining solo is becoming less profitable due to increasing difficulty.
Marek creates Slush Pool, the first publicly available mining pool, to enable miners to cooperate and mine bitcoin together. It continues today as Braiins.
Slush Pool is targeted by hackers, resulting in the loss of thousands of bitcoins. This prompts the need to find a solution to enhance the security of the mining pool and bitcoin custody itself.