Question for Bitcoin experts: How do I derive Bitcoin addresses from a seed (12 words) OFFLINE and without using any bitcoin software?
ie: what is the mathematical formula?
Will zap ⚡ good answers!
100 sats \ 0 replies \ @Doo_Deux 15 Jan
This is a good read.
https://estudiobitcoin.com/do-you-trust-your-seed-dont-generate-it-yourself/
reply
100 sats \ 0 replies \ @Kathleen_Croteau 15 Jan
This is the best guide and word lookup table.
https://bitbox.swiss/blog/roll-the-dice-generate-your-own-seed/
https://shiftcrypto.ch/bitbox02/BitBox_Diceware_HowTo.pdf
https://shiftcrypto.ch/bitbox02/BitBox_Diceware_LookupTable.pdf
reply
42 sats \ 1 reply \ @flix2 OP 15 Jan
OK, I got sent some nice tools and guides on Twitter. I'll add them here for anyone else who is interested:
https://github.com/axic/bip32-path
https://estudiobitcoin.com/do-you-trust-your-seed-dont-generate-it-yourself/
https://mdrza.medium.com/how-to-convert-mnemonic-12-word-to-private-key-address-wallet-bitcoin-and-ethereum-81aa9ca91a57
https://github.com/iancoleman/bip39
reply
142 sats \ 0 replies \ @quark 15 Jan
I like iancoleman one. With dice to generate the randomness. Use it in a offline computer booting a fresh linux installation or tails os. Can't be colder than that.
reply
0 sats \ 0 replies \ @030e0dca83 15 Jan
In the book Mastering Bitcoin there is a chapter about private keys, public keys and addresses
reply
0 sats \ 2 replies \ @flix2 OP 15 Jan
Why am I asking this?
I want to create the most paranoid, coldest of cold storage. No hardware. No software. No trusted third party at all. I will use dice and the BIP39 wordlist to create a seed, then derive addresses from that seed, backup the seed in some long lasting physical form (stone or metal), bury it deep for at least 20 years and send some btc to those addresses every month as savings.
Happy to read any criticism of this plan or ideas!
reply
100 sats \ 0 replies \ @Bitcoiner1 15 Jan
Eres un genio loco!
reply
0 sats \ 0 replies \ @ShortSimon 17 Jan
Don't forget where you buried it!
reply