Print Page - Create Bitcoin Core hd wallet from word list / mnemonic

Title: Create Bitcoin Core hd wallet from word list / mnemonic
Post by: tekbe on May 05, 2019, 01:22:51 PM

To have a way of (re-)creating Bitcoin Core wallets out of a word list I wrote a bash script.

https://github.com/tekbe/wallet-tools (https://github.com/tekbe/wallet-tools)

How it works:

Bitcoin Core allows you to create a deterministic wallet (https://en.bitcoinwiki.org/wiki/Deterministic_wallet) from a seed
Bitcoin Explorer (https://github.com/libbitcoin/libbitcoin-explorer) allows you create such seeds from a word list

This can basically be done with two lines in the terminal:

Code:

$ echo "my random and secret word list" | bx mnemonic-to-seed | bx hd-new | bx hd-to-ec | bx ec-to-wif
L26zbMQRXyhUaaHcTQ13mzHWBauMPsG2qrmZQHx5QpYmMMFkhcWn
$ bitcoin-cli sethdseed true "L26zbMQRXyhUaaHcTQ13mzHWBauMPsG2qrmZQHx5QpYmMMFkhcWn"

A random word list can also be created with Bitcoin Explorer:

Code:

$ bx seed | bx mnemonic-new
sadness arrow artefact expect office carry fatal tape radar ladder dirt hawk echo bone exile uphold topple local

The script provides some extra convenience. Hope it's useful.

Title: Re: Bitcoin core hd wallet from mnemonic
Post by: tekbe on May 06, 2019, 02:23:56 AM

Quote from: ETFbitcoin on May 05, 2019, 03:43:45 PM

i wonder why you use mnemonic seed with 18 words which isn't common?

The readme was misleading: 9, 12, 15, 18 or 21 words are fine (everything that "bx mnemonic-to-seed" accepts as input).

Title: Re: Bitcoin core hd wallet from mnemonic
Post by: croxNN on August 31, 2019, 08:45:37 AM

Hello all!

I'm trying understand HD wallets in bitcoin core implementation and got stuck. Here it is:
$ bx seed | bx mnemonic-new -l en reward awake later spot grass list peanut clog hurry guess question father leg dress only reunion horn napkin $ echo "reward awake later spot grass list peanut clog hurry guess question father leg dress only reunion horn napkin" | bx mnemonic-to-seed | bx hd-new | bx hd-to-ec | bx ec-to-wif L1G3dzjDmkPNkrYLs2L9pTbF9BZ4XThqkXVtDxcrP887uPYRjriG
That WIF key L1G3dzjDmkPNkrYLs2L9pTbF9BZ4XThqkXVtDxcrP887uPYRjriG should be ok for sethdseed? Right?

So next:$ bitcoin-cli createwallet test { "name": "test", "warning": "" } $ bitcoin-cli -rpcwallet=test sethdseed true L1G3dzjDmkPNkrYLs2L9pTbF9BZ4XThqkXVtDxcrP887uPYRjriG error code: -5 error message: Invalid private key

What's wrong?

Thanks in advance.

Title: Re: Bitcoin core hd wallet from mnemonic
Post by: croxNN on August 31, 2019, 09:01:15 AM

UPD: Resolved. It needs to use -v 239 for testnet in bx ec-to-wif command

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Bitcoin => Development & Technical Discussion => Topic started by: tekbe on May 05, 2019, 01:22:51 PM