bc4py (blockchain-for-python)

It enable you to create application with blockchain on Python3.

Function

• UTXO base
• Proof of works or/and proof of stake multi-consensus
• Minting colored coin (Not token)
• Python interpreter based smart contract (PyContract)
• block containing result smart contract　(differ from Ethereum)

Requirement

• Windows/Linux
• Python3 (3.5, 3.6~)
• nem-ed25519 my encryption lib
• p2p-python my peer2peer lib
• LevelDB
  • plyvel for linux and ARM
  • python-leveldb for linux and windows
• hash algorithm
  • yespower-python For CPU
  • yescryptR64 CPU resistance?
  • hmq-hash for GPU
  • x16s-hash for GPU
  • x11_hash For ASIC
  • litecoin_scrypt For ASIC

Install

cd ~
git clone https://github.com/namuyan/bc4py
mv bc4py blockchain-py
cd blockchain-py
pip install --user -r requirements.txt
pip install --user -r requirements-c.txt
wget http://example.com/boot.dat

• install leveldb
  • For windows, please look py-leveldb-windows
  • For linux, pip install plyvel or pip install leveldb
  • For ARM, leveldb-1.20-build

# compile
wget https://github.com/google/leveldb/archive/v1.20.tar.gz
zcat v1.20.tar.gz | tar xf -
cd leveldb-1.20
make
make check
# copy source
sudo cp -r include/leveldb /usr/local/include/
sudo install -o root -m 644 -p out-shared/libleveldb.so.1.20 /usr/local/lib/
sudo cp -d out-shared/libleveldb.so out-shared/libleveldb.so.1 /usr/local/lib/
sudo install -o root -m 644 -p out-static/lib* /usr/local/lib/
# affect changes
sudo ldconfig
pip install plyvel

Start node

• python localnode.py Node working on local env, for debug.
• python publicnode.py Node with mining/staking.
• python observenode.py Node only accept blocks/txs.

Documents

• Create genesis block
• Ho to mining
• API doc
• Development Guidelines
• Proxy introduction

Build for windows

nuitka3 --mingw --recurse-none publicnode.py

Author

@namuyan_mine

Licence

MIT