I’m slightly confused by the part where the author states a 7-bit search would take 2 years on a modern GPU, and the answer was found in 4 days on a Vega64. Isn’t that a modern GPU? Have I misunderstood here, or was the author’s math incorrect?
It would take two years to generate every hash, but this one happened to be generated earlier than that. It would also be technically possible to guess a Bitcoin address private key on the first guess, but there are 2^160 total possibilities
