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https://github.com/alexk111/HD-Wallet-Scanner
❄️ Find all used addresses in your Bitcoin HD wallets bypassing gap limits.
https://github.com/alexk111/HD-Wallet-Scanner
bitcoin bitcoin-address hd-wallet
Last synced: about 1 month ago
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❄️ Find all used addresses in your Bitcoin HD wallets bypassing gap limits.
- Host: GitHub
- URL: https://github.com/alexk111/HD-Wallet-Scanner
- Owner: alexk111
- License: mit
- Created: 2019-09-04T13:14:43.000Z (almost 5 years ago)
- Default Branch: master
- Last Pushed: 2022-12-11T21:41:34.000Z (over 1 year ago)
- Last Synced: 2024-04-17T00:01:07.950Z (2 months ago)
- Topics: bitcoin, bitcoin-address, hd-wallet
- Language: JavaScript
- Homepage:
- Size: 270 KB
- Stars: 22
- Watchers: 5
- Forks: 8
- Open Issues: 11
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Lists
- Blockchain-Guide - HD Wallet Scanner
- awesome-bitcoin - HD Wallet Scanner - Find all used addresses in your Bitcoin HD wallets bypassing gap limits. (Utilities)
- awesome-taproot - HD Wallet Scanner - Find all used addresses in your Bitcoin HD wallets bypassing gap limits. (Utilities)
README
HD Wallet Scanner
Find all used addresses in your Bitcoin HD Wallets bypassing gap limits
HD Wallet Scanner is a utility for resolving an [Account Discovery](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#account-discovery) issue when a HD Wallet has more than X (usually 20) unused addresses in a row and a wallet software stops seeing addresses beyond this point.
The utility was made to supplement [One-Time Address](https://github.com/alexk111/One-Time-Address). However it will also be helpful if you encounter the gap limit issue in other circumstances.
## How it works
1. You set an extended public key, a range for address indexes and a starting block for each of your HD Wallets
2. HD Wallet Scanner scans blocks and generates report files with address indexes and input stats in ```output``` directory
3. You use Bitcoin Core + HWI (if you use a hardware wallet) to import child keys derived with the address indexes and then spend unspent outputs
## Prerequisites
To run the application, you will need a synced Bitcoin full node with RPC enabled.
## Installing
```
# clone repo
git clone https://github.com/alexk111/HD-Wallet-Scanner
# navigate to it
cd HD-Wallet-Scanner
# install dependencies
yarn install
# add env variables
cp .env.sample .env
# add wallets config
cp wallets.js.sample wallets.js
```
Edit ```.env```:
- BITCOIND_RPCUSER and BITCOIND_RPCPASSWORD - user/pass to access Bitcoin RPC server
- MAX_ADDRESSES_PER_ITERATION - max number of addresses per a scan iteration (default: 100000)
Edit ```wallets.js```:
- Enter settings for your wallets
## Scanning
```
# running the scanner
yarn start
```
## Using Address Indexes
After the scan completes, you will get two files in ```output``` directory: ```IDS ids{i}-{j} hgt{m}-{n}.json``` and ```INS ids{i}-{j} hgt{m}-{n}.json```. The ```IDS ...``` file only contains the address indexes, whereas the ```INS ...``` file also contains an address, value of a transaction input and a height of a block the transaction is recorded in.
To derive child keys with the collected address indexes and import them into Bitcoin Core wallet use [HWI](https://github.com/bitcoin-core/HWI) if your private keys are stored on a hardware wallet and ```bitcoin-cli```'s [importmulti](https://bitcoin.org/en/developer-reference#importmulti). For more info on how to use Bitcoin Core with HWI check [this guide](https://github.com/bitcoin-core/HWI/blob/master/docs/bitcoin-core-usage.md).
Note. If you have huge gaps between used addresses, then call ```importmulti``` with keypool range parameter equal to ```n,n``` where ```n``` is an address index, to add only that specific address.
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## License
MIT © Alex Kaul