tldr: generate list of addresses from xpubs. If you like it simple jump to: https://peli-pro.github.io/coldcard_address_generator/ But you should only use it for testing, if you use it with your own xpub please use the standalone html or node version.
This script will generate lists of addresses for your coldcard xpubs.
But you can use it with any other xpubs from other wallets as well (but you might not get the xpubs you really need).
It is tested and developed for the coldcard.
If you only have a ypub / BIP49 or a zpub / BIP84 you can use https://jlopp.github.io/xpub-converter/ to convert
them to xpubs (choose xpub mainnet) and paste a ypub or zpub in the field below.
It will generate external (receive) and internal (change) addresses. You will get those values from the public.txt file that you can export from the coldcard. It uses the bitcoinjs-lib: https://github.com/bitcoinjs/bitcoinjs-lib and bip32: https://github.com/bitcoinjs/bip32
BEFORE YOU TRUST THIS SCRIPT PLEASE DOUBLE CHECK THAT IT WORKS CORRECTLY, SEE THE LAST SECTION !!!!!
You have 2 choices:
- You can use the standalone html in your browser - no need to install anything
- you can use the javascript file with node.js and npm (if you like command line stuff)
but first:
Get your public.txt from your coldcard
Insert a SD-Card in your coldcard
Settings -> Blockchain -> Choose Bitcoin or Testnet: Bitcoin
then
Advanced -> MicroSD Card ->Dump summary
this will create the file public.txt on your sd card.
Open public.txt and get the xpubs from these sections: :
## For BIP44 / Electrum: m/44'/0'/{account}'/{change}/{idx}
## For BIP49 (P2WPKH-nested-in-P2SH): m/49'/0'/{account}'/{change}/{idx}
## For BIP84 (Native Segwit P2PKH): m/84'/0'/{account}'/{change}/{idx}
Save the coldcard_address_generator_html_standalone.html file somewhere on your computer and run it locally in Firefox or Chrome.
No need to install anything.
Or just run directly from github: https://peli-pro.github.io/coldcard_address_generator/
You will need to install node.js and git on your system
sudo apt install nodejs npm git
npm install bitcoinlib-js
npm install bip32
Install node.js from: https://nodejs.org/en/
Install git from: https://git-scm.com/
Open an elevated command prompt with admin rights:
npm install bitcoinlib-js
npm install bip32
git clone https://github.com/peli-pro/coldcard_address_generator
Edit the file coldcard_address_generator_node.js in the folder coldcard_address_generator and replace the demo xpubs in the first
section with your xpubs from public.txt.
If you need more than 20 addresses change the n = 20 to a higher number.
Run the following command in the coldcard_address_generator folder:
node coldcard_address_generator_node.js
This will generate receive and change addresses.
Testnet is not supported at this moment
Please verify yourself that this script generates correct addresses.
Compare the generated addresses with
- the addresses in your public.txt
- the addresses generated by Wasabi Wallet or Electrum Wallet
MIT License
Copyright (c) 2019 peli-pro
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.