bitcoinlib

Python Bitcoin Library

The Python BitcoinLib is a library that provides developers with a wide range of tools to work with Bitcoin.

With BitcoinLib you can:

• Create and manage wallets
• Use various key-structures for your wallet such as HD (Hierarchical Deterministic) wallets following the BIP32 standard
• Interact with the Blockchain, retrieve and decode blockchain data
• Build, sign and verify transactions and signatures. This could be a standard segwit transactions but also multisig, nulldata or custom made transactions
• Create, analyse and run Bitcoin scripts
• Generate Bitcoin addresses and represent them in different address formats like P2PKH, P2SH, Bech32, etc
• Create private keys and work with Mnemonic password phrases
• Uses external Service providers to fetch address, transaction, utxo and blockchain data. Or connect to you local Bitcoin core <https://bitcoinlib.readthedocs.io/en/latest/source/_static/manuals.setup-bitcoind-connection.html>, Bcoin <https://bitcoinlib.readthedocs.io/en/latest/source/_static/manuals.setup-bcoin.html> or Blockbook <https://bitcoinlib.readthedocs.io/en/latest/source/_static/manuals.setup-blockbook.html>_ node.
• Can be extended to support other cryptocurrencies by configuring custom parameters. At the moment Litecoin and Dogecoin are also supported.

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Install

Install required packages on Ubuntu or related Linux systems:

.. code-block:: bash

$ sudo apt install build-essential python3-dev libgmp3-dev

Then install using pip

.. code-block:: bash

$ pip install bitcoinlib

Check out the more detailed installation instructions <https://bitcoinlib.readthedocs.io/en/latest/source/_static/manuals.install.html>_ to read how to install on other systems or for troubleshooting.

If you are using docker you can check some Dockerfiles to create images in the docker <https://github.com/1200wd/bitcoinlib/tree/master/docker>_ directory.

Documentation

Read the full documentation at: http://bitcoinlib.readthedocs.io/

Example

The bitcoin library contains a wallet implementation using SQLite3 or SQLAlchemy to import, create and manage keys in a Hierarchical Deterministic way.

Example: Create wallet and generate new address (key) to receive bitcoins

.. code-block:: pycon

from bitcoinlib.wallets import Wallet w = Wallet.create('Wallet1') w.get_key().address 'bc1qk25wwkvz3am9smmm3372xct5s7cwf0hmnq8szj'

Now send a small transaction to your wallet and use the scan() method to update transactions and UTXO's

.. code-block:: pycon

>>> 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

.. code-block:: pycon

>>> t = w.send_to('bc1qemtr8ywkzg483g8m34ukz2l4pl3730776vzq54', '0.001 BTC', offline=False)
'b7feea5e7c79d4f6f343b5ca28fa2a1fcacfe9a2b7f44f3d2fd8d6c2d82c4078'
>>> t.info  # Shows transaction information and send results

More Examples and Use Cases

You can find many more examples in the documentation <https://bitcoinlib.readthedocs.io/en/latest/>_ for instance about the Wallet.create() <https://bitcoinlib.readthedocs.io/en/latest/source/bitcoinlib.wallets.html#bitcoinlib.wallets.Wallet.create>_ method.

There are many working examples on how to create wallets, specific transactions, encrypted databases, parse the blockchain, connect to specific service providers in the examples directory <https://github.com/1200wd/bitcoinlib/tree/master/examples>_ in the source code of this library.

Some more specific examples can be found on the Coineva website <https://coineva.com/category/bitcoinlib.html>_.

BitcoinLib is used at Blocksmurfer Explorer <https://blocksmurfer.io/>_ and many other repositories: https://github.com/1200wd/bitcoinlib/network/dependents

Contact

If you have any questions, encounter a problem or want to share an idea, please use Github Discussions <https://github.com/1200wd/bitcoinlib/discussions>_

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...

Future / Roadmap

• Fully support timelocks
• Support Taproot and Schnorr signatures
• Support advanced scripts
• Support for Trezor wallet or other hardware wallets
• Allow to scan full blockchain
• Integrate simple SPV client

Disclaimer

This library is still in development, please use at your own risk and test sufficiently before using it in a production environment.