Payment4

Amirhossein Tz

<p>Payment4 is a cutting-edge cryptocurrency payment gateway designed to empower businesses globally with fast, secure, and borderless payment solutions.</p>
<p>As the digital payment ecosystem continues to evolve, Payment4 enables businesses to stay ahead of the curve by seamlessly integrating cryptocurrency payments into their operations.</p>
<p>Supported integrations:<br />
– WooCommerce<br />
– Restrict Content Pro (RCP)<br />
– Easy Digital Downloads (EDD)<br />
– Gravity Forms</p>
<h4>Features</h4>
<ul>
<li>High Security  </li>
<li>Easy Implementation  </li>
<li>Fast and Cost-Effective Settlements  </li>
<li>Secure Payments (Escrow)  </li>
<li>24/7 Support  </li>
<li>Merchant Dashboard with Diverse Features  </li>
<li>Custom Payment Page  </li>
<li>Cryptocurrency Payment Link  </li>
</ul>
<h4>Payment Gateway Fees</h4>
<ul>
<li>Get the Payment Gateway and Management Panel for Free  </li>
<li>A 1% transaction fee, capped at $10  </li>
</ul>
<p>Examples:<br />
– $50 payment <span aria-hidden="true" class="wp-exclude-emoji">→</span> $0.50 fee<br />
– $1,300 payment <span aria-hidden="true" class="wp-exclude-emoji">→</span> $10 fee (capped)</p>
<h4>Languages Supported</h4>
<ul>
<li>Arabic  </li>
<li>English  </li>
<li>Persian  </li>
<li>French  </li>
<li>Spanish  </li>
<li>Turkish  </li>
</ul>
<h4>How It Works</h4>
<ol>
<li>Customer Selects Crypto – During checkout, the customer chooses Payment4 (e.g., Bitcoin, USDT, or other supported coins).  </li>
<li>Invoice Creation – A crypto payment invoice is generated with a unique wallet address and QR code.  </li>
<li>Customer Sends Crypto – The customer transfers the exact amount to the provided wallet address.  </li>
<li>Real-Time Verification – Payment4 monitors the blockchain and instantly verifies the transaction.  </li>
<li>Order Finalization – Once confirmed, the order is processed and funds are sent directly to your configured wallet—Payment4 never holds your funds.  </li>
</ol>
<p>With Payment4, you can accept cryptocurrency payments across your WooCommerce store, RCP membership site, EDD digital products, and Gravity Forms checkout forms—all seamlessly integrated.</p>
<h3>External Services</h3>
<p>This plugin relies on the Payment4 API, a third-party external service, to process cryptocurrency payments. The plugin will not function without connecting to this service.</p>
<h4>What is the Payment4 API?</h4>
<p>Payment4 (https://payment4.com) is a cryptocurrency payment gateway service that processes crypto transactions, monitors blockchain confirmations, and manages payment verification.</p>
<h4>When does the plugin connect to Payment4 services?</h4>
<p>The plugin connects to Payment4 external services in the following situations:</p>
<ol>
<li><strong>During Checkout</strong> – When a customer selects Payment4 as their payment method and proceeds to pay</li>
<li><strong>Payment Verification</strong> – When verifying that a cryptocurrency payment has been received and confirmed on the blockchain</li>
<li><strong>Payment Callbacks</strong> – When Payment4 sends webhook notifications about payment status updates</li>
<li><strong>Language Files</strong> – When loading translation files for the plugin interface</li>
</ol>
<h4>What data is transmitted?</h4>
<p>When processing payments, the following data is sent to Payment4 services:</p>
<ul>
<li>Order amount and currency</li>
<li>Order ID and description</li>
<li>Customer email address (optional, for payment notifications)</li>
<li>Return and callback URLs for your website</li>
<li>API credentials (API key) for authentication</li>
</ul>
<p>No sensitive financial information (credit card details, bank accounts, etc.) is transmitted. Cryptocurrency transactions are handled directly on the blockchain.</p>
<h4>Service Endpoints Used</h4>
<ul>
<li><strong>Payment API</strong>: https://service.payment4.com/api/v1/payment</li>
<li><strong>Verification API</strong>: https://service.payment4.com/api/v1/payment/verify</li>
<li><strong>Currency Data</strong>: https://storage.payment4.com/wp/currencies.json</li>
<li><strong>Language Files</strong>: https://storage.payment4.com/wp/languages.json</li>
</ul>
<h4>Legal & Privacy</h4>
<ul>
<li><strong>Terms of Service</strong>: https://payment4.com/terms-of-service</li>
<li><strong>Privacy Policy</strong>: https://payment4.com/privacy-policy</li>
</ul>
<p>By using this plugin, you acknowledge that data will be transmitted to Payment4’s servers for payment processing. Please review Payment4’s terms of service and privacy policy to understand how your data is handled.</p>
<h3>License</h3>
<p>This plugin is licensed under the GPLv2 (or later) License. You can view the full text of the GPLv2 license at: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html</p>
<h3>Support</h3>
<p>For support, visit our <a href="https://payment4.com/support" rel="nofollow ugc">Support Page</a>.</p>


Payment4 Crypto Payment gateway

Accept secure cryptocurrency payments in WooCommerce, Restrict Content Pro, Easy Digital Downloads, and Gravity Forms with Payment4.

Pippin Williamson

Easy Digital Downloads

Andrew Munro / AffiliateWP

Chris Klosowski

John Parris

Robin Cornett

<p>This plugin now requires <a href="https://wordpress.org/plugins/easy-digital-downloads/" title="Easy Digital Downloads" rel="ugc">Easy Digital Downloads</a> 2.9 or greater.</p>
<p>Once activated, EDD Auto Register will create a WordPress user account for your customer at checkout, without the need for the customer to enter any additional information. This eliminates the need for the default EDD registration form, and drastically reduces the time it takes your customers to complete their purchase.</p>
<p>Guest checkout is required so the plugin overrides the setting. The registration form is hidden on checkout while the plugin is active.</p>
<p>There are various filters available for developers, see the FAQ tab for more information.</p>
<p><strong>More extensions for Easy Digital Downloads</strong></p>
<p>You can find more extensions (both free and commercial) from <a href="https://easydigitaldownloads.com/downloads/" title="Easy Digital Downloads" rel="nofollow ugc">Easy Digital Downloads’ website</a></p>


EDD Auto Register

I wish there was an option to enable the introduction of the password directly from the form



Works perfectly

Keep your checkout fields minimal to improve conversions while still getting your customer accounts established.

Definitely a key add-on for my EDD sites. Can't do without it now.

Great for checkout conversions

Security is sadly a topic that the EDD people to not care about. Sending clear text passwords out to people should not be done. I have fixed this with this code. This hides the field be then tells the users after the did the purchase that they should create a password. Not very user friendly, I currently had disabled it but I am thinking of activating it again because I think my sales gone down because if this.


<?php
namespace nextgenthemes\website;

add_filter( 'edd_auto_register_email_body', __NAMESPACE__ . '\\edd_auto_register_email_body', 10, 4 );

function edd_auto_register_email_body( $default_email_body, $first_name, $username, $password ) {

	// Email body
	$out = __( "Dear", "edd-auto-register" ) . ' ' . $first_name . ",\n\n";
	$out .= sprintf(
		__( "Thanks for your purchase! A account with a random password has been created for you. Please <a href='%s'>follow the lost password procedure</a> to create a secure password for your account in case you want to ask a support question or access your downloads. (For security reasons passwords are not send out in cleartext)", "nextgenthemes-website" ),
		wp_lostpassword_url()
	) . "\n\n";
	$out .= __( "Your Username:", "edd-auto-register" ) . ' ' . $username . "\n\n";

	return $out;
}




Also using emails and usernames isn't exactly great either as you can guess them form the author slugs WP generates from them.

My Idea would be so simply use javascript on checkout to fill in a random generate password on checkout automatically. WP already has a function for this. And do not display the 2nd password confirm field at all, and maybe even autofill the username field with something based on the first/last name they enter.

To elaborate on my point that this is not the first time I notice this pattern from EDD:

They had ssl_verify => false all over their code, I think its now changed it now changed some areas, or at least the is a option to verify your shops ssl. But with the software licensing extension those API calls and downloads are (or at lease were) totally unresponsively ignoring SSL altogether. Because some WP bug that was fixed like 10 years ago. Their entire attitude to simply ignore it because it may fail in some very rare cases is very bad.

It could lead to a chain reaction from a MITM attack on easydigitaldownloads.com that all extensions they ship to customers would ship from hackers sites instead with malicious code and given that many of their customers use EDD SL as well they could spread it from there. Because all the API calls simple ignor(ed) SSL! Not a security expert but at least I pay a little bit attention.

Also, and my guess is that this is very common in this industry. They do support via email and they expect you to send them passwords to your sites in cleartext!

Great Idea, bad execution.

Its horrible security to send out passwords in cleartext.

This is an excellent extension to add to Easy Digital Downloads. It eliminates confusion and friction for users when they purchase something on your site because it automatically creates an account for them and logs them in.

It's especially useful when selling online courses or memberships on your site. I use it specifically for LearnDash and it works great. Because it creates the account & logs the user in immediately after a purchase, they can begin consuming your content or taking your course right away.

Works Well. Saves Time. Eliminates Confusion.

Just wanted to stop by and say thank you for the recent updates!

I've been using this plugin for almost 2 years, and was happy that it always just worked. But, since it was never updated I was always waiting for it to crash after an update of WordPress. It didn't, fortunately. :-)

Happy to see that you guys are giving it some love again :-)

Long time user. Very excited about the recent updates!

Automatically creates a WP user account at checkout, based on customer's email address.

Payment4 Crypto Payment gateway vs EDD Auto Register