Kaspa Payments Gateway for WooCommerce

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Kaspa Payments Gateway for WooCommerce enables your WooCommerce store to accept Kaspa (KAS) cryptocurrency payments. Built with security and simplicity in mind, using KPUB (Extended Public Key) watch-only wallets for non-custodial payment processing. Important: This plugin is not officially affiliated with, endorsed by, or connected to Kaspa, WooCommerce, or their respective owners. Kaspa is a decentralized cryptocurrency, and this plugin is an independent third-party integration. Note: This is an initial release. We recommend testing on a staging site before deploying to production. Key Features KPUB Watch-Only Wallet: Secure, non-custodial payment processing. No private keys stored. Automatic Payment Detection: Real-time payment monitoring via Kaspa API Unique Address Per Order: Each order gets a dedicated payment address for better tracking Real-Time Exchange Rates: Automatic USD to KAS conversion using CoinGecko API QR Code Support: Easy payment scanning with QR codes Classic & Block Checkout: Supports both WooCommerce checkout styles Sequential Address Generation: Addresses visible in Kaspium wallet automatically Live Price Updates: Payment amounts update with exchange rate fluctuations Security No private keys or mnemonics stored KPUB (Extended Public Key) only – safe to store All user input sanitized WordPress nonce verification on all AJAX requests Capability checks for admin functions Requirements WordPress 5.0 or higher WooCommerce 3.0 or higher PHP 7.4 or higher Kaspa wallet (Kaspium recommended) with KPUB export capability Installation Upload the plugin files to /wp-content/plugins/kaspa-payments-gateway-woocommerce/ Activate the plugin through the ‘Plugins’ menu in WordPress Navigate to WooCommerce → Settings → Payments Click on “Kaspa Payments Gateway” to configure Export your KPUB from your Kaspium wallet Go to WordPress Admin → Kaspa → Wallet Setup Import your KPUB to enable payments Configuration Export KPUB from Kaspium: Open your Kaspium wallet Navigate to Settings or Export Copy your Extended Public Key (KPUB) – starts with “kpub” Configure Wallet in WordPress: Go to WordPress Admin → Kaspa → Wallet Setup Paste your KPUB Click “Validate & Import KPUB” Enable Payment Method: Go to WooCommerce → Settings → Payments Enable “Kaspa Payments” Save changes Frequently Asked Questions Does this store my private keys? No. This plugin uses KPUB (Extended Public Key) only. Private keys and mnemonics are never stored or required. Can I spend from addresses generated by this plugin? Yes, but not through WordPress. This plugin is watch-only. To spend funds, use your wallet software (Kaspium) where you control the private keys. How does payment detection work? The plugin polls the Kaspa API to check if funds have been received at the order payment address. When the required amount is detected, the order is automatically completed. What happens if the exchange rate changes? Payment amounts update in real-time based on current exchange rates. Customers see the latest KAS amount on the checkout page. Will addresses appear in my Kaspium wallet? Yes. Addresses are generated sequentially starting from index 0, so they automatically appear in Kaspium wallets which scan low indices. External Services This plugin connects to the following third-party services to provide its functionality: Kaspa API (https://api.kaspa.org) * Purpose: Used to check payment addresses for received funds and verify transactions on the Kaspa blockchain. * Data Sent: Payment addresses (public blockchain addresses only, no private keys or personal data). * When: Automatically when checking order payment status and during periodic payment verification. * Terms of Service: https://api.kaspa.org (Kaspa is a decentralized cryptocurrency network) * Privacy Policy: N/A (public blockchain data only) CoinGecko API (https://api.coingecko.com) * Purpose: Provides real-time exchange rates to convert USD order amounts to Kaspa (KAS) cryptocurrency. * Data Sent: API request for Kaspa/USD exchange rate (no user data). * When: When displaying payment amounts on checkout pages and updating live prices. * Terms of Service: https://www.coingecko.com/en/terms * Privacy Policy: https://www.coingecko.com/en/privacy QR Server API (https://api.qrserver.com) * Purpose: Generates QR codes for payment addresses to make it easier for customers to scan and pay. * Data Sent: Payment address and amount (public blockchain data only, no personal information). * When: When displaying the payment QR code on checkout and order pages. * Terms of Service: https://goqr.me/api/terms-of-service/ * Privacy Policy: https://goqr.me/api/privacy-policy/ Changelog 1.0.0 Initial release KPUB watch-only wallet support Sequential address generation starting from index 0 Real-time payment detection via Kaspa API Live exchange rate updates via CoinGecko QR code payment support Classic and block checkout compatibility Automatic order completion on payment detection