Last week, an enigmatic and fiendishly tricky puzzle that had baffled bitcoiners for years was finally solved. In the process, it earned the individual who cracked it a 5 BTC jackpot and brought new acclaim to the team behind the project. After being launched in 2015, at the height of the bitcoin bear market, the puzzle attracted a flurry of interest. As the months passed and no one stepped forward to claim the prize, interest in the puzzle waned, until last week’s sudden news that its mysteries had been decoded.