Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it

what kind of speed should i expect when using python to brute force 12 word bip39 seed phrase from word list?

Pure Python implementation should get you maybe like a dozen or two per second, that's all.

it shows around 10000h/s

Sounds like you are doing part of the work only. I was testing the whole thing like getting a list of deterministic keys/addresses and so on.