PyWallet

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Simple BIP32 (HD) wallet creation for: BTC, BTG, BCH, ETH, LTC, DASH, DOGE

BIP32 (or HD for "hierarchical deterministic") wallets allow you to create child wallets which can only generate public keys and don't expose a private key to an insecure server.

This library simplify the process of creating new wallets for the BTC, BTG, BCH, ETH, LTC, DASH and DOGE cryptocurrencies.

Most of the code here is forked from:

• Steven Buss's Bitmerchant <https://github.com/sbuss/bitmerchant>_ (original)
• BlockIo's multimerchant-python <https://github.com/BlockIo/multimerchant-python>_ (fork of Bitmerchant)
• Michail Brynard's Ethereum BIP44 Python <https://github.com/michailbrynard/ethereum-bip44-python>_

I simply added support for a few more cryptocurrencies (BCH, BTG, DASH), as well as created methods to simplify the creation of HD wallets and child wallets.

Enjoy!

Installation

Install via PiP:

.. code:: bash

$ sudo pip install pywallet

Example code:

Create HD Wallet

The following code creates a new Bitcoin HD wallet:

.. code:: python

# create_btc_wallet.py

from pywallet import wallet

# generate 12 word mnemonic seed
seed = wallet.generate_mnemonic()

# create bitcoin wallet
w = wallet.create_wallet(network="BTC", seed=seed, children=1)

print(w)

Output looks like this:

.. code:: bash

$ python create_btc_wallet.py

{
  "coin": "BTC",
  "seed": "guess tiny intact poet process segment pelican bright assume avocado view lazy",
  "address": "1HwPm2tcdakwkTTWU286crWQqTnbEkD7av",
  "xprivate_key": "xprv9s21ZrQH143K2Dizn667UCo9oYPdTPSMWq7D5t929aXf1kfnmW79CryavzBxqbWfrYzw8jbyTKvsiuFNwr1JL2qfrUy2Kbwq4WbBPfxYGbg",
  "xpublic_key": "xpub661MyMwAqRbcEhoTt7d7qLjtMaE7rrACt42otGYdhv4dtYzwK3RPkfJ4nEjpFQDdT8JjT3VwQ3ZKjJaeuEdpWmyw16sY9SsoY68PoXaJvfU",
  "wif": "L1EnVJviG6jR2oovFbfxZoMp1JknTACKLzsTKqDNUwATCWpY1Fp4",
  "children": [{
     "address": "1E3btRwsoJx2jUcMnATyx7poHhV2tomL8g",
     "path": "m/0",
     "xpublic_key": "xpub69Fho5TtAbdoXyWzgUV1ZYst9K4bVfoGNLZxQ9u5js4Rb1jEyUjDtoATXbWvAcV8cERCMMnH8wYRVVUsRDSfaMjLqaY3TvD7Am9ALjq5PsG",
     "wif": "KysRDiwJNkS9VPzy1UH76DrCDizsWKtEooSzikich792RVzcUaJP"
 }]
}

Similarly, you can do the same for an Ethereum wallet:

.. code:: python

# create_eth_wallet.py

from pywallet import wallet

seed = wallet.generate_mnemonic()
w = wallet.create_wallet(network="ETH", seed=seed, children=1)

print(w)

Output looks like this (no WIF for Ethereum):

.. code:: bash

$ python create_eth_wallet.py

{
  "coin": "ETH",
  "seed": "traffic happy world clog clump cattle great toy game absurd alarm auction",
  "address": "0x3b777f60eb04fcb13e6b27e468532e491409722e",
  "xprivate_key": "xprv9yTuSjwb95QZznV6epMWpb4Kpc2S8ZRaQuAf5B697YXtQD2tDmmJ5KvwJWVjtbVrdJ1WBKNnuodrpTKGfHfiPSEgrAxUjL5RP1gQwwT3fFx",
  "xpublic_key": "xpub6GhhMtkVjoPi5DKtqapKzMzrzdGjo1EPc7Ka6KdeoXYdCrTBH1Hu1wKysm8boWSy8VeTKVJi6gQJ2qJ4YG2ZhvFDcUUgMJrFCJWN1PGtBry",
  "wif": "",
  "children": [{
    "address": "0x87eb82d43fa7316df0a989c0d951a9037ed02f9b",
    "path": "m/0",
    "xpublic_key": "xpub6LnpVXD73jNuAYXxzQCnEY6wXQspwkiAEkZWoX4BW9Tzx6KbUrMUYAU1Yvw4kebPHSPiEJPo8irHWHSwQR6WuVwUj85xURsugPWeJVH6sau",
    "wif": ""
  }]
}

* Valid options for network are: BTC, BTG, BCH, LTC, DASH, DOGE

Create Child Wallet

You can create child-wallets (BIP32 wallets) from the HD wallet's Extended Public Key to generate new public addresses without revealing your private key.

Example:

.. code-block:: python

# create_child_wallet.py

from pywallet import wallet

WALLET_PUBKEY = 'YOUR WALLET XPUB'

# generate address for specific user (id = 10)
user_addr = wallet.create_address(network="BTC", xpub=WALLET_PUBKEY, child=10)

# or generate a random address, based on timestamp
rand_addr = wallet.create_address(network="BTC", xpub=WALLET_PUBKEY)

print("User Address\n", user_addr)
print("Random Address\n", rand_addr)

Output looks like this:

.. code:: bash

$ python create_child_wallet.py

User Address
{
  "address": "13myudz3WhpBezoZue6cwRUoHrzWs4vCrb",
  "path": "m/0/395371597"
}
Random Address
{
  "address": "1KpS2wC5J8bDsGShXDHD7qdGvnic1h27Db",
  "path": "m/0/394997119"
}

IMPORTANT

I highly recommend that you familiarize yourself with the Blockchain technology and be aware of security issues. Reading Mastering Bitcoin <https://github.com/bitcoinbook/bitcoinbook>_ and going over Steven Buss's security notes on the Bitmerchant repository <https://github.com/sbuss/bitmerchant>_ is a good start.

Enjoy!