Title: Hashcash Author: pkaroukin Published: July 1, 2014 Last modified: January 13, 2018 --- Search plugins This plugin **hasn’t been tested with the latest 3 major releases of WordPress**. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress. ![](https://s.w.org/plugins/geopattern-icon/hashcash.svg) # Hashcash By [pkaroukin](https://profiles.wordpress.org/pkaroukin/) [Download](https://downloads.wordpress.org/plugin/hashcash.zip) * [Details](https://wordpress.org/plugins/hashcash/#description) * [Reviews](https://wordpress.org/plugins/hashcash/#reviews) * [Installation](https://wordpress.org/plugins/hashcash/#installation) * [Development](https://wordpress.org/plugins/hashcash/#developers) [Support](https://wordpress.org/support/plugin/hashcash/) ## Description This plugin will integrate jQuery plugin Hashcash.IO (https://github.com/hashcash/ jquery.hashcash.io) to be used in combination with https://hashcash.io/ service. Active development happens in GitHub repository – https://github.com/hashcash/wordpress- hashcash Please report all issues at https://github.com/hashcash/wordpress-hashcash/issues Because of the way plugins work, problem might arrise from specific combination of WP version, plugins, themes. Therefore for the best result everytime you submit a bug report or just seeking an advice please include following: * Version of WordPress you are using * Brand and version of Browser you are using to test it * List of third-party plugins and their versions activated on your website * What theme and version you are using ### Protect Against Web Spam Typically various “Internet SEO Companies” try to leverage poor forum software protection against mass submission and create many worthless posts with links to a website they are promoting. Some forum and blog software implement various CAPTCHA solutions but these have two negative aspects: * They annoy your visitors. * They provide a fake sense of security. * Today it is possible to buy access to API which solves any kind of CAPTCHA for just $0.70 per 1000 CAPTCHA images solved by a real human being. And do you really think your customer will be happy to try to solve one of these ridiculous CAPTCHAs? ### Secure Against Brute Force Attacks Many modern applications are susceptible to brute force attacks. Take a typical login form, for example. Hackers can compromise account security by trying every possible password combination. They can also leverage a large network of proxy servers to paralelize this attack. Forcing their browser to work hard makes it too expensive and slow for hackers to perform a brute force attack. ### Based On Open Technologies We leverage the following features: * Asm.js * HTML5 * Web Workers Browsers supported: * Google Chrome 28+ * Mozilla Firefox 22+ * Internet Explorer 10+ * Opera 18+ ### Fully translatable All strings are available for translation ### Fully accessible We follow both common sense and accessibility guidelines to make this widget accessible to people with limited abilities. We make it focusable and actionable via Tab-Enter keys, as well as we have WAI-ARIA live region which updates blind user via screen reader about progress. ## Screenshots * [[ * Submit button disabled. User need to unlock it before proceeding. * [[ * Widget updates both visually and via WAI-ARIA to inform user about progress. * [[ * Submit button unlocked. * [[ * If user tries to click on submit button before unlocking, information popup will show up. ## Installation 1. Download plugin folder into /wp-content/plugins/ on your server 2. Activate the plugin through the ‘Plugins’ menu in WordPress 3. On Hashcash plugin settings page generate new keys and save settings ## FAQ Installation Instructions 1. Download plugin folder into /wp-content/plugins/ on your server 2. Activate the plugin through the ‘Plugins’ menu in WordPress 3. On Hashcash plugin settings page generate new keys and save settings ## Reviews There are no reviews for this plugin. ## Contributors & Developers “Hashcash” is open source software. The following people have contributed to this plugin. Contributors * [ pkaroukin ](https://profiles.wordpress.org/pkaroukin/) [Translate “Hashcash” into your language.](https://translate.wordpress.org/projects/wp-plugins/hashcash) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/hashcash/), check out the [SVN repository](https://plugins.svn.wordpress.org/hashcash/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/hashcash/) by [RSS](https://plugins.trac.wordpress.org/log/hashcash/?limit=100&mode=stop_on_copy&format=rss). ## Meta * Version **1.0.14** * Last updated **8 years ago** * Active installations **20+** * WordPress version ** 3.0.0 or higher ** * Tested up to **4.9.29** * Tags * [hashcash](https://wordpress.org/plugins/tags/hashcash/)[security](https://wordpress.org/plugins/tags/security/) [spam](https://wordpress.org/plugins/tags/spam/) * [Advanced View](https://wordpress.org/plugins/hashcash/advanced/) ## Ratings 5 out of 5 stars. * [ 5 5-star reviews ](https://wordpress.org/support/plugin/hashcash/reviews/?filter=5) * [ 0 4-star reviews ](https://wordpress.org/support/plugin/hashcash/reviews/?filter=4) * [ 0 3-star reviews ](https://wordpress.org/support/plugin/hashcash/reviews/?filter=3) * [ 0 2-star reviews ](https://wordpress.org/support/plugin/hashcash/reviews/?filter=2) * [ 0 1-star reviews ](https://wordpress.org/support/plugin/hashcash/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/hashcash/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/hashcash/reviews/) ## Contributors * [ pkaroukin ](https://profiles.wordpress.org/pkaroukin/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/hashcash/)