What are some alternatives?
When comparing zsh and Bitcoin, you can also consider the following products
fish - The friendly interactive shell.
Ethereum - Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.
DASH - DASH is a secure, blockchain-based global financial network which offers private transactions.
Monero - Monero is a secure, private, untraceable currency. It is open-source and freely available to all.
GNU Bourne Again SHell - Bash is the shell, or command language interpreter, that will appear in the GNU operating system.
Litecoin - Litecoin is a peer-to-peer Internet currency that enables instant payments to anyone in the world.