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!This plugin hasn’t been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

WP-Hashcash Extended

Client-side javascript blocks all spam bots. XHTML 1.1 compliant. Now with support for WordPress Versions 3.1+


  • Fixed capability for WordPress 3.1+


  • Removed links from the blog linking back to Hashcash homepage to comply with WordPress.org plugin guidelines. Props Ryan Hellyer.


  • Fix a javascript error


  • Support clean interoperation with jQuery and Prototype
  • Protect BuddyPress (BP) signup pages


  • Admin users can now comment from Dashboard
  • Tested on WP 2.9.2 in Chrome, IE, and FF
  • Fix a potential JS error


  • Added a new options page under Options, WordPress Hashcash
  • Fixed XHTML standards compliance
  • Added validation options for pingbacks and trackbacks (stolen from here)
  • Added a logging option for moderated comments


  • Added an option for handling comments via moderation, the akismet queue, or deletion
  • Removed database dependencies
  • Removed error message for hash fail
  • Added the noscript tag for users without javascript
  • Corrected the widget formatting
  • Changed zip file format from winrar to 7zip, hopefully it will be more compatible


  • Removed version checking
  • Removed an unnecessary link element in the head section


  • Suppress errors on loading remote version by any method
  • Fix typo-bugs everywhere affecting the widget reporting, date checking, etc
  • Strip tags from remote version
  • Try various methods to get remote version, ignore if we can't open sockets
  • Fix a bug with one of the javascripts

Requires: 3.1 or higher
Compatible up to: 3.3.2
Last Updated: 5 years ago
Active Installs: 1,000+


5 out of 5 stars


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