As of this thread, which is AFAIK the starting point, it's about Public Keys and the goal is to find the according Private Key: https://bitcointalk.org/index.p

As of this thread, which is AFAIK the starting point, it's about Public Keys and the goal is to find the according Private Key: https://bitcointalk.org/index.php?topic=1305887.0 https://bitcointalk.org/index.php?topic=1305887.0 Someone, back in the 2015, created this puzzle when BTC was cheap. He/she posted a couple of public keys (Wallet Addresses): https://bitcointalk.org/index.php?topic=5218972.0 https://bitcointalk.org/index.php?topic=5218972.0 Though, I don't understand the actual task. It's a couple of transactions and one have to "guess" (aka bruteforce) the private key to a known public key. There's an increasing level of complexity, which makes it harder, the higher you get in this list. Would appreciate any more details.