https://99bitcoins.com/how-to-get-a-custom-bitcoin-address/
https://en.bitcoin.it/wiki/Vanitygen
https://github.com/samr7/vanitygen
https://github.com/exploitagency/vanitygen-plus
编译 vanitygen 需要下面的库：
openssl-1.0
libssl1.0-dev
安装方法：
apt-get install libssl1.0-dev
apt-get install libssl1.0-dev:amd64
libssl1.0.0
https://packages.debian.org/jessie/libssl-dev
the newer libssl-dev package 可能不能用。