Bitcoin is a new enrollment plugin added to the Moodle plugins database which helps admins and webmasters use Bitcoin as the payment gateway.
Bitcoin is one of the popular payment gateways and offers considerable number of features unsupported by other payment gateways like Paypal. The installation and usage instructions are mentioned on the plugin description page.
You can download the Bitcoin plugins from the Moodle plugins database here – https://moodle.org/plugins/view/enrol_bitcoin You can also use a sandbox account to test the payment gateway. The plugin is supported for all versions above Moodle 2.5