Bitcoin Lightning Payment Gateway for WooCommerce (via CLINK)

Accept Bitcoin Lightning Network payments on your WooCommerce store via the CLINK protocol. No web server required for your Lightning node — all communication flows over Nostr relays. Customers can pay with ShockWallet, ZEUS, BXRD.app, Amethyst, or any CLINK-compatible Lightning wallet. Read the original public announcement to learn more. How It Works Merchant generates a CLINK Offer string (noffer1...) from their CLINK-compatible wallet Customer checks out and selects “Lightning (CLINK)” as payment method The plugin uses the noffer to request a BOLT 11 Lightning invoice over Nostr Customer scans the QR code and pays with any Lightning wallet Payment is confirmed via CLINK receipt — order is marked complete Features Supports simple, variable, digital, and subscription products Works with both classic checkout and WooCommerce Cart/Checkout Blocks Live BTC price via CoinGecko (5-minute cache) or optional fixed rate Display prices in sats, BTC, or ₿ (bip-0177) on product pages, cart, and checkout Configurable invoice timeout and poll interval Automatic sats conversion from your store currency QR code display on the order-received page Full refund support (manual Lightning refund) Compatible with Custom Price for WooCommerce Pro and other price-display plugins Client-side price conversion fallback for maximum plugin compatibility Third Party Services This plugin communicates with the following third-party services: Nostr Relays (CLINK Protocol) Purpose: Request and receive Lightning invoices from the merchant’s CLINK-compatible wallet When: At checkout, when a customer places an order using the CLINK payment method Data sent: Merchant’s noffer offer data, payment amount in satoshis, order description, and ephemeral public keys Relay URL: Determined by the merchant’s noffer string (configured in the gateway settings) Privacy note: No personal customer data (name, email, address) is transmitted to Nostr relays. Only the payment amount and a short order description are shared. Customers choosing wallet-based auto-renewal (ndebit) authorize the merchant to pull future subscription payments; the ndebit string and subscription amount are known to the Nostr relay. CoinGecko Purpose: Fetch the current BTC-to-fiat exchange rate for price display When: On checkout page load, every 5 minutes (result is cached in WordPress transients) Data sent: The store’s currency code (e.g., usd, eur) Privacy policy: https://www.coingecko.com/en/privacy Note: If configured, a fixed exchange rate in the plugin settings bypasses this service entirely. ShockWallet.app Purpose: Informational links for customers to generate CLINK noffer/ndebit strings When: When the customer clicks the link (no data sent by the plugin automatically) Privacy policy: https://docs.shock.network/privacy Development Source code for the built JavaScript bundles is included in the plugin: assets/js/clink-checkout.js — source for the order-received page bundle assets/js/clink-blocks.js — source for the blocks checkout registration assets/js/clink-price-converter.js — source for the client-side price conversion fallback build.mjs — esbuild configuration package.json — npm dependencies