bitsv 0.5.4

Bitcoin SV made easier.

BitSV: Bitcoin SV made easy.

NOTE about cashaddresses

Bitcoin SV will be slowly reinstating legacy address format as the default standard. Cashaddress is a great tool for conversions if need be. https://github.com/oskyk/cashaddress/

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Forked from Ofek’s awesome Bit library: https://github.com/ofek/bit

Try to ignore the out of date bits on the README which refer to Bitcoin Cash and not Bitcoin SV.

What needs fixing

• This README.

• The test cases…

• Testnet

• Networking for broadcasting 100 kilobyte OP_RETURNS to miners

• Rates (so ‘usd’, ‘jpy’, etc work as they do in bit)

BitSV is so easy to use:

For normal transactions:

>>> import bitsv
>>> from bitsv import Key
>>> my_key = Key('YourPrivateKeyGoesHere')
>>> my_key.get_balance()
9000000  # satoshis
>>> # Can include a long list of tuples as outputs
>>> outputs = [
>>>     # Donate to Wikileaks
>>>     ('1HB5XMLmzFVj8ALj6mfBsbifRoD4miY36v', 0.0035)  # 0.0035 bsv
>>> ]
>>> my_key.send(outputs)
'9f59f5c6757ec46fdc7440acbeb3920e614c8d1d247ac174eb6781b832710c1c'

Here is the transaction https://blockchain.info/tx/9f59f5c6757ec46fdc7440acbeb3920e614c8d1d247ac174eb6781b832710c1c.

For op_return (recent addition Jan 27th 2019):

>>> import bitsv
>>> from bitsv import Key
>>> my_key = Key('YourPrivateKeyGoesHere')
>>> # input a list of tuples with (data, encoding) pairs where encoding is "utf-8" or "hex"
>>> # each tuple represents separate pushdata. If you want one really big push then just use one tuple.
>>> lst_of_pushdata = [('6d01', 'hex'), ('new_name', 'utf-8')]
>>> # This sets memo.cash name to "new_name" as per https://memo.cash/protocol as an example usecase of op-return metadata
>>> my_key.send_op_return(lst_of_pushdata)

Three lines of code!

Features

• Python’s fastest available implementation (100x faster than closest library)

• Seamless integration with existing server setups

• Supports keys in cold storage

• Fully supports 25 different currencies

• First class support for storing data in the blockchain

• Deterministic signatures via RFC 6979

• Access to the blockchain (and testnet chain) through multiple APIs for redundancy

• Exchange rate API, with optional caching

• Optimal transaction fee API, with optional caching

• Compressed public keys by default

• Multiple representations of private keys; WIF, PEM, DER, etc.

• Standard P2PKH transactions

If you are intrigued, continue reading. If not, continue all the same!

Installation

BitSV is distributed on PyPI as a universal wheel and is available on Linux/macOS and Windows and supports Python 3.5+ and PyPy3.5-v5.7.1+. pip >= 8.1.2 is required.

$ pip install bitsv  # pip3 if pip is Python 2 on your system.

Documentation

Docs are hosted by Github Pages and are automatically built and published by Travis after every successful commit to BitSV’s master branch.

Credits

• ofek for the original bit codebase.

• teran-mckinney for his work on the bitcash fork

• bjarnemagnussen for his segwit code for the necessary BIP-143 support.