hashcash

postage payment scheme for email based on hash calculations

Install

All systems
curl cmd.cat/hashcash.sh
Debian Debian
apt-get install hashcash
Ubuntu
apt-get install hashcash
image/svg+xml Kali Linux
apt-get install hashcash
Windows (WSL2)
sudo apt-get update sudo apt-get install hashcash
OS X
brew install hashcash
Raspbian
apt-get install hashcash

hashcash

postage payment scheme for email based on hash calculations

Hash cash is a payment scheme that uses CPU cycles as the form of payment. This can be used as a counter-measure for junk email (spam) by using the hash cash token as a proof of payment for each email that you sent.