I was just looking at this puzzle the other day. I thought it would be years before it was solved. 67 has almost the same difficulty, right?
66bit puzzle was a key between 2^65 and 2^66. The actual key was (in decimal notation) 46,346,217,550,346,335,726
The 67bit puzzle is a key between 2^66 and 2^67. So puzzle 67 has twice the number of keys to search as 66. Puzzle 67 has 6.7BTC currently. It might be "easier" than 66bit depending on how quickly GPUs advance in the coming years
Disclaimer, this whole thing could be a scam. But the rabbit hole goes deep!
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Yeah, I heard someone poached it or something because of releasing the key? Some amateur mistake? I dont know all the details yet, I am sure the rabbit hole is deep.
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