Create Bitcoin Core hd wallet from word list / mnemonic

[tekbe]

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

How it works:

• Bitcoin Core allows you to create a deterministic wallet from a seed
• Bitcoin 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.

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[tekbe]

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).

[croxNN]

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.

[croxNN]

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