Hashcash implementation in PHP.

v1.8.0 2017-06-15 08:00 UTC


PHP implementation of Hashcash 1.


The preferred method of installation is via Packagist and Composer. Run the following command to install the package and add it as a requirement to composer.json:

composer.phar require "thefox/hashcash=~1.6"


See examples.php for more examples.

require 'vendor/autoload.php';
use TheFox\Pow\Hashcash;
$stamp = Hashcash::newInstance(20, '')->mint();
print "hashcash stamp: '".$stamp."'\n";

Alternative Usage

require 'vendor/autoload.php';
use TheFox\Pow\Hashcash;
$hashcash = new Hashcash(20, '');
print "hashcash stamp: '".$hashcash->mint()."'\n";



You're welcome to contribute to this project. Fork this project at You should read GitHub's How to Fork a Repo.


Copyright (C) 2014 Christian Mayer

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see