It's not that I'm a pessimist but every time I think about the magnitude of the spaces we face I get chills 
For example, in puzzle 66 the number of possible positions is 36893488147419103231. To understand this it is necessary to resort to an analogy. If each of those numbers were a millimeter, that would be equivalent to 3901.95 light years!!!
Any attempt at sequential search is then ruled out outright. Only with methods like kangaroo or bsgs would there be a possibility if the public key was known.
By the way, I leave a py script to help find the public key from the public address.
https://github.com/Dedaloo/PublicKeyHunt
For example, in puzzle 66 the number of possible positions is 36893488147419103231. To understand this it is necessary to resort to an analogy. If each of those numbers were a millimeter, that would be equivalent to 3901.95 light years!!!
Any attempt at sequential search is then ruled out outright. Only with methods like kangaroo or bsgs would there be a possibility if the public key was known.
By the way, I leave a py script to help find the public key from the public address.
https://github.com/Dedaloo/PublicKeyHunt