py-vanitycash

Python generator for vanity addresses for Bitcoin Cash (BCH)

How to generate vanity addresses

The address is generated as a "cashaddress" e.g. bitcoincash:qqqqqqq5y7z5p7k442mhjzge974qqdwd6v6yvzvzls
The first qqqqqqs are chosen when running the program:

python main.py -s qqqqqq -p 0

Installation (requires Python3)

pip install -r requirements.txt
python main.py

Multithreading

For now, just run multiple instances according to number of cores

Requirements

We thankfully use the following external libraries:

• cashaddress

Performance

The program is not super fast since it has to derive a pubkey from a privkey and check the cashaddr against your search pattern.
Vanitygen does about 60 times better than the python program.

Corei5-4300U:

• Pure python per CPU core -> ~10 H/s
• C-implementation per CPU core -> ~5 kH/s

Accelerate with C library

The pubkey generation can be greatly accelerated if a C implementation is used. We support libbtc. To use use it

• compile libbtc with CLI
• set environtment variable
  • export libbtcpath="PATHTOLIBBTC"
  • export LD_LIBRARY_PATH=$libbtcpath/.libs:$LD_LIBRARY_PATH
• now we need to compile a small wrapper around libbtc so python can use it with ctypes. In py-vanitycash gcc -shared -fPIC -std=gnu99 wraplibbtc.c -I $libbtcpath/include/ -o wrappedlibbtc.so -L $libbtcpath/.libs/ -lbtc
• Run the main program with the -l or --uselibbtc option