Python Bitcoin Library
Bitcoin, Litecoin and Dash Crypto Currency Library for Python.
Includes a fully functional wallet with multi-signature, multi-currency and multiple accounts. You this library at a high level and create and manage wallets for the command line or at a low level and create your own custom made transactions, keys or wallets.
The BitcoinLib connects to various service providers automatically to update wallets, transactions and blockchain information. It does currently not parse the blockchain itself.
Read the full documentation at: http://bitcoinlib.readthedocs.io/
This library is still in development, please use at your own risk and test sufficiently before using it in a production environment.
The bitcoin library contains a wallet implementation using SQLAlchemy and SQLite3 to import, create and manage keys in a Hierarchical Deterministic way.
Example: Create wallet and generate new address (key) to receive bitcoins
>>> from bitcoinlib.wallets import Wallet >>> w = Wallet.create('Wallet1') >>> key1 = w.get_key() >>> key1.address '1Fo7STj6LdRhUuD1AiEsHpH65pXzraGJ9j'
Now send a small transaction to your wallet and use the scan() method to update transactions and UTXO's
>>> w.scan() >>> w.info() # Shows wallet information, keys, transactions and UTXO's
When your wallet received a payment and has unspent transaction outputs, you can send bitcoins easily. If successful a transaction ID is returned
>>> t = w.send_to('1PWXhWvUH3bcDWn6Fdq3xhMRPfxRXTjAi1', '0.001 BTC', offline=False) 'b7feea5e7c79d4f6f343b5ca28fa2a1fcacfe9a2b7f44f3d2fd8d6c2d82c4078' >>> t.info # Shows transaction information and send results
Wallet from passphrase with accounts and multiple currencies
The following code creates a wallet with two Bitcoin and one Litecoin account from a Mnemonic passphrase. The complete wallet can be recovered from the passphrase, which is the masterkey.
from bitcoinlib.wallets import Wallet, wallet_delete from bitcoinlib.mnemonic import Mnemonic passphrase = Mnemonic().generate() print(passphrase) w = Wallet.create("Wallet2", keys=passphrase, network='bitcoin') account_btc2 = w.new_account('Account BTC 2') account_ltc1 = w.new_account('Account LTC', network='litecoin') w.get_key() w.get_key(account_btc2.account_id) w.get_key(account_ltc1.account_id) w.info()
Create a Multisig wallet with 2 cosigners which both need to sign a transaction.
from bitcoinlib.wallets import Wallet from bitcoinlib.keys import HDKey NETWORK = 'testnet' k1 = HDKey('tprv8ZgxMBicQKsPd1Q44tfDiZC98iYouKRC2CzjT3HGt1yYw2zuX2awTotzGAZQEAU9bi2M5MCj8iedP9MREPjUgpDEBwBgGi2C8eK' '5zNYeiX8', network=NETWORK) k2 = HDKey('tprv8ZgxMBicQKsPeUbMS6kswJc11zgVEXUnUZuGo3bF6bBrAg1ieFfUdPc9UHqbD5HcXizThrcKike1c4z6xHrz6MWGwy8L6YKVbgJ' 'MeQHdWDp', network=NETWORK) w1 = Wallet.create('multisig_2of2_cosigner1', sigs_required=2, keys=[k1, k2.public_master(multisig=True)], network=NETWORK) w2 = Wallet.create('multisig_2of2_cosigner2', sigs_required=2, keys=[k1.public_master(multisig=True), k2], network=NETWORK) print("Deposit testnet bitcoin to this address to create transaction: ", w1.get_key().address)
Create a transaction in the first wallet
w1.utxos_update() t = w1.sweep('mwCwTceJvYV27KXBc3NJZys6CjsgsoeHmf', min_confirms=0) t.info() t.send()
And then import the transaction in the second wallet, sign it and push it to the network
w2.get_key() t2 = w2.transaction_import(t) t2.sign() t2.send() t2.info()
Segregated Witness Wallet
Easily create and manage segwit wallets. Both native segwit with base32/bech32 addresses and P2SH nested segwit wallets with traditional addresses are available.
Create a native single key P2WPKH wallet:
>>> from bitcoinlib.wallets import Wallet >>> w = Wallet.create('wallet_segwit_p2wpkh', witness_type='segwit') >>> w.get_key().address bc1q84y2quplejutvu0h4gw9hy59fppu3thg0u2xz3
Or create a P2SH nested single key P2SH_P2WPKH wallet:
>>> from bitcoinlib.wallets import Wallet >>> w = Wallet.create('wallet_segwit_p2sh_p2wpkh', witness_type='p2sh-segwit') >>> w.get_key().address 36ESSWgR4WxXJSc4ysDSJvecyY6FJkhUbp
Command Line Tool
With the command line tool you can create and manage a wallet without any Python programming.
To create a new Bitcoin wallet
$ clw newwallet Command Line Wallet for BitcoinLib Wallet newwallet does not exist, create new wallet [yN]? y CREATE wallet 'newwallet' (bitcoin network) Your mnemonic private key sentence is: force humble chair kiss season ready elbow cool awake divorce famous tunnel Please write down on paper and backup. With this key you can restore your wallet and all keys
You can use clw to create simple or multisig wallets for various networks, manage public and private keys and managing transactions.
For the full command line wallet documentation please read
Mnemonic key generation
Allows you to use easy to remember passphrases consisting of a number of words to store private keys (BIP0039). You can password protect this passphrase (BIP0038), and use the HD Wallet structure to generate an almost infinite number of new private keys and bitcoin addresses (BIP0043 and BIP0044).
Example: Generate a list of words passphrase and derive a private key seed
>>> from bitcoinlib.mnemonic import Mnemonic >>> from bitcoinlib.encoding import to_hexstring >>> words = Mnemonic().generate() >>> words unique aisle iron extend earn cigar trust source next depart yard bind >>> to_hexstring(Mnemonic().to_seed(words)) '9c6f41a347bf4f326f9c989fb522bec1b82c36463580d1769daadba7d59f69a305505fdd5d2131c9c60255c79279d4e8896155e0b126abea036da56a766f81a1'
Communicates with pools of bitcoin service providers to retrieve transaction, address, blockchain information. Can be used to push a transaction to the network, determine optimal service fee for a transaction or to update your wallet's balance.
When working with wallets, connections to service providers are automatically managed, so you don't have to worry about them. You can however easily use the Service object directly.
Example: Get estimated transaction fee in Sathosis per Kb for confirmation within 5 blocks
>>> from bitcoinlib.services.services import Service >>> Service().estimatefee(5) 138964
Bitcoinlib uses the SQLite database by default, but other databases are supported as well. See http://bitcoinlib.readthedocs.io/en/latest/_static/manuals.databases.html for instructions on how to use MySQL or PostgreSQL.
For more examples see https://github.com/1200wd/bitcoinlib/tree/master/examples
Implements the following Bitcoin Improvement Proposals
- Hierarchical Deterministic Wallets (BIP0032)
- Passphrase-protected private key (BIP0038)
- Mnemonic code for generating deterministic keys (BIP0039)
- Purpose Field for Deterministic Wallets (BIP0043)
- Multi-Account Hierarchy for Deterministic Wallets (BIP0044)
- Structure for Deterministic P2SH Multisignature Wallets (BIP0045)
- Bech32/base32 address format for native v0-16 witness outputs (BIP0173)
- Native and P2SH nested Segregated Witness transactions (BIP0141 and BIP0143)
- Bech32m format for v1+ witness addresses (BIP0350)
- and many more...
Installing and updating
sudo apt install build-essential python3-dev libgmp3-dev libssl-dev
To install OpenSSL development package on Debian, Ubuntu or their derivatives
sudo apt install libssl-dev
To install OpenSSL development package on Fedora, CentOS or RHEL
sudo yum install gcc openssl-devel
This library requires a Microsoft Visual C++ Compiler. See http://bitcoinlib.readthedocs.io/en/latest/_static/manuals.install.html
The fastecdsa library is not enabled at this moment on windows, the slower ecdsa library is installed.
Install with pip
pip install bitcoinlib
These packages will be installed * fastecdsa (or ecdsa on Windows) * sqlalchemy * requests * numpy * pycryptodome
If you want to use BIP38 encrypted private keys, you should also install the much faster scrypt library.
pip install scrypt
Install development environment
sudo apt install -y postgresql postgresql-contrib mysql-server libpq-dev libmysqlclient-dev
Create a virtual environment for instance on linux with virtualenv:
$ virtualenv -p python3 venv/bitcoinlib $ source venv/bitcoinlib/bin/activate
Then clone the repository and install dependencies:
$ git clone https://github.com/1200wd/bitcoinlib.git $ cd bitcoinlib $ pip install -r requirements-dev.txt
When you experience issues with the scrypt package when installing, you can try to solve this by removing and reinstall scrypt:
$ pip uninstall scrypt $ pip install scrypt
Please make sure you also have the Python development and SSL development packages installed, see 'Other requirements' above.
You can also use pyscrypt or pycryptodome instead of scrypt. Pyscrypt is a pure Python scrypt password-based key derivation library. It works but it is slow when using BIP38 password protected keys.
If you run into issues, do not hesitate to contact us or file an issue at https://github.com/1200wd/bitcoinlib/issues
Update to the latest version of the library with
$ pip install bitcoinlib --upgrade
To upgrade make sure everything is backuped and run updatedb.py from the installation directory.
$ python updatedb.py -d [<link-to-database-if-not-standard>]
For more information on installing, updating and maintenance see https://bitcoinlib.readthedocs.io/en/latest/_static/manuals.install.html#installation
Future / Roadmap
- Support advanced scripts
- Fully support timelocks
- Support for lightning network
- Support for Trezor wallet