Re: Pollard's kangaroo ECDLP solver

Does this mean that the puzzle transactions are not in the keyspaces that privatekeys.pw shows? but could be anywhere?

https://privatekeys.pw/puzzles/bitcoin-puzzle-tx

Puzzle 64 - Keyspace 8000000000000000...ffffffffffffffff ?

No, do not pay attention to fxsniper's post.

The puzzles are in the bits/keyspace related to the amount.

Like you said, #64 (.64 BTC) is in the 64 bit range: 8000000000000000:FFFFFFFFFFFFFFFF

Thank you for the clarification. As the public key is not available for some of these puzzle transactions some will need to be brute-forced using the base58-check address right?

Unless we know the public key kangaroo cant help as much faster as it is.

Correct, most need to be brute forced. Most programs take the input as base58 address but like Bitcrack and Vanity Search, they convert the base58 into RIPEMD 160 and search for that; a little quicker. Vanity Search can also search for string if you don't enter the full address.