Hi,

i will shorty receive my ledger nano s and i am try to be as much paranoid as possible. 

So, i don't fully understand the details about the mnemonic generation on the device, but it must somehow interact with my computer to collect any kind of entropy for the mnemonic words. Being paranoid means, i don't trust this approach and i would like to generate the mnemonic myself. Should be a little work, but not impossible. I just print out the full 2048 words list and flip coins to get a word from the list. Should be 11 coin flips each word times 23 = 253 coin flips. Totally doable.

Problem is, the 24th word is a checksum. Can anyone help me how to get this checksum manually? Is that even possible? I don't want to use any electronics at all...

Thanks in advance.