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GriffNode Payments

Accept Bitcoin, Ethereum, Litecoin, Dogecoin, Dash and USDT/USDC/DAI stablecoins on any WordPress site. Drop a pay button anywhere with the [griffnode_button] shortcode - no WooCommerce required. Non-custodial, no KYC, no chargebacks.

by GriffNode · github.com/griffnode/wordpress-plugin · website

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Install

No release zip yet. The repository archive installs, but the folder name will carry the branch suffix and updates will not flow:

wp plugin install https://github.com/griffnode/wordpress-plugin/archive/refs/heads/main.zip

Readme

GriffNode Payments for WordPress

Accept Bitcoin, Litecoin, Dogecoin and Dash payments on any WordPress site — no WooCommerce required. Drop a pay button anywhere with a shortcode; customers pick a coin and are redirected to a hosted payment page. Funds go directly to your wallet, GriffNode never holds them.

Running a WooCommerce store? Use the dedicated GriffNode for WooCommerce plugin instead — it hooks straight into checkout and orders.

Requirements: WordPress 6.0+, PHP 7.4+

Installation

1 — Download

Download the latest griffnode-payments.zip from the Releases page.

2 — Install

  1. In WordPress admin go to Plugins → Add New → Upload Plugin
  2. Choose the downloaded ZIP and click Install Now
  3. Click Activate Plugin

3 — Configure

Go to Settings → GriffNode and fill in:

Field Where to find it
Publishable Key Dashboard → API Integration → pk_live_... — safe to expose in the browser
Secret Key Dashboard → API Integration → sk_live_... — keep this private
Webhook Secret Dashboard → Webhooks → your endpoint's signing secret
Default Currency Fiat used when a shortcode doesn't set one (USD, PLN, EUR, GBP)

4 — Register your webhook

In your GriffNode dashboard go to Webhooks and add the URL shown on the settings page:

https://yoursite.com/wp-json/griffnode/v1/webhook

Subscribe to: payment.completed, payment.partial, payment.expired. Copy the signing secret into the Webhook Secret field.

5 — Add wallets

The coin selector only shows cryptos you have wallets for. Go to Dashboard → Wallet Management and add an xpub for each coin you want to accept.

Adding a pay button

Put the shortcode in any post, page, or widget:

[griffnode_button amount="49.99" currency="USD" button_text="Pay with Crypto"]
Attribute Required Description
amount ✅ Price in fiat (e.g. 49.99)
currency — USD (default from settings), PLN, EUR, GBP
crypto — Lock the button to one coin (e.g. BTC); omit to let the customer choose
button_text — Button label (default Pay with Crypto)
reference — Your order/reference id — echoed back in every webhook as order_id
email — Pre-fill the customer email on the payment page
success_url — Where to send the customer after a confirmed payment
cancel_url — Where to send the customer on expiry/cancel

The amount and currency are signed server-side, so a customer can't tamper with the price in the browser.

Reacting to payments (for developers)

When a verified webhook arrives, the plugin fires WordPress actions. Hook into them from your theme's functions.php or your own plugin to fulfil orders, grant access, send emails, etc.

add_action( 'griffnode_payment_completed', function ( $event ) {
    // $event['order_id']       — your `reference` from the shortcode
    // $event['transaction_id'] — GriffNode transaction id
    // $event['amount_crypto'], $event['currency_crypto'], ...
    error_log( 'Paid: ' . $event['order_id'] );
} );

add_action( 'griffnode_payment_partial', function ( $event ) { /* underpaid */ } );
add_action( 'griffnode_payment_expired', function ( $event ) { /* window expired */ } );

// Or catch everything:
add_action( 'griffnode_webhook', function ( $event ) { /* $event['event'] = 'payment.completed' ... */ } );

Only HMAC-verified events reach these hooks.

How it works

  1. A visitor selects a cryptocurrency and clicks the button
  2. The plugin calls the GriffNode API server-side (your secret key never touches the browser) and redirects to a hosted payment page
  3. The customer sends the exact crypto amount within the 60-minute window
  4. GriffNode fires a webhook — the plugin verifies it and triggers the action hooks above

Test mode

Use pk_test_... / sk_test_... keys in the settings. No real funds move in test mode.

Support

Read the full README on GitHub →