# The mail/hashcash port

## hashcash-1.22 – hashcash anti-spam / denial of service counter-measure tool

## Description

    The hashcash tool allows you to create hashcash stamps to attach to
    emails you send, and to verify hashcash stamps attached to emails you
    receive. Email senders attach hashcash stamps with the X-Hashcash:
    header. A hashcash stamp constitutes a proof-of-work which takes a
    parameterizable amount of work to compute for the sender. The
    recipient can verify received stamps efficiently.

WWW: http://www.hashcash.org/

Categories:
  mail

## Library dependencies

## Build dependencies

- STEM->=1.21:textproc/groff

## Run dependencies