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Regarding trying to break one of the unsolved puzzles, why would you want to brute-force RIPEMD-160?
A public address, like one of the loaded puzzle addresses, is basically (neglecting network byte and checksum) HASH160(public key) which is RIPEMD-160(SHA-256(public key)). If your aim is to get to an unknown public key and you reverse RIPEMD-160(32-byte input) you land on a possible collision, one of 2
96 by the way, where you even don't know if you found the correct one. Your found collision is a SHA-256() hash.
Now you have to reverse this SHA-256(x02|x03+32bytes) and because you don't know if the compressed public key starts with x02 or x03, your search space is basically of magnitude 2
257. Good luck with that, when our solar system or rather a larger part of our galaxy doesn't have enough energy to even brute-force RIPEMD-160() let alone SHA-256().
I would strongly suggest to use (or train) human brain 1.0 before wasting time with such stupid cracking paths. Such posts are complete nonsense and frankly an insult to intellect.
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Oh no, the quantum computer will solve it all bs again... not that I've been waiting for it.
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If you didn't notice the difference between e.g. #66, more specifically non-multiples of 5, and puzzles that are multiples of 5, you're a lost case and you're wasting everybody else's time here. Hint: it was something to do with the public key.
The level of insanity in this thread is really concerning.

Of course, I know you're right, that post was just for learning.