Cryptoniq
Cryptoniq is a free, decentralized cryptocurrency payment gateway for WooCommerce. Buyers pay you directly in Bitcoin (BTC) or Ethereum (ETH) — the funds land in your wallet, not on a third-party platform that holds them, takes a cut, and makes you withdraw. No accounts. No KYC. No custodian. Just paste your wallet address and start accepting crypto. Why Cryptoniq? Most “crypto gateways” are actually middlemen: you sign up on their platform, they hold your funds, charge a percentage, and you wait to withdraw. Cryptoniq flips that. Payments go peer-to-peer, on-chain, straight from the buyer’s wallet to yours. You keep 100% of your sales — zero platform fees on top of network gas. No registration required — install, paste your wallet, done. Direct on-chain payments — funds arrive in your wallet within minutes. Real-time price conversion — order totals are quoted in your store currency and converted to crypto at the live rate. Features WooCommerce checkout integration — adds Cryptoniq as a payment method like any other gateway. Clean, mobile-friendly payment box with a QR code and one-click address copy. Automatic order confirmation when the on-chain transaction is detected. Live BTC and ETH exchange rates for EUR and USD (this free version supports those two store currencies — see PRO for 150+ currencies). Multiple wallet addresses per coin — Cryptoniq rotates through them per order. HPOS (High-Performance Order Storage) compatible. Supported coins Bitcoin (BTC) Ethereum (ETH) Want more coins, stablecoins, or instant detection? A separate paid plugin, Cryptoniq PRO, is sold at cryptoniq.io. It is not included in or downloaded by this free plugin — it’s a separate plugin you install alongside this one. PRO adds: Litecoin, Dogecoin, TRON, Solana, BNB Smart Chain ETH on Arbitrum One and Optimism USDT and USDC stablecoins on multiple chains Real-time webhook detection (no waiting on polling) 150+ fiat currencies for conversion Priority support This free version does not contain any PRO code or features — it’s fully functional standalone, and there is no license key field anywhere in this plugin. External services This plugin relies on three external services to do its job. They are all free, public, and require no account or API key (the bundled Etherscan key is a shared default that you can override). No personal data is ever sent — not the buyer’s name, IP, email, order details, or anything else. Only public blockchain addresses you have already chosen to share, and the public identifiers of the coins/currencies whose prices the plugin needs to quote. 1. api.coingecko.com — exchange rates What it is: CoinGecko’s free public price API. What it’s used for: Converting your store’s order totals from fiat (USD, EUR, GBP, …) into the equivalent amount of BTC or ETH the customer needs to send at checkout. What data is sent: Only the public coin identifiers (bitcoin, ethereum) and the target currencies (usd, eur) the plugin needs prices for. The request URL looks like https://api.coingecko.com/api/v3/simple/price?ids=bitcoin,ethereum&vs_currencies=usd,eur. No personal data, no order data, no site identifiers. When it’s sent: Once every 30 minutes via WordPress cron (background), and on plugin activation if no cached prices exist yet. Never on a customer-facing page load. Terms of Service: https://www.coingecko.com/en/terms Privacy Policy: https://www.coingecko.com/en/privacy 2. blockchain.info — BTC transaction lookups What it is: Blockchain.com’s public Bitcoin blockchain explorer. What it’s used for: Checking whether the customer’s expected BTC payment has arrived at the wallet address you configured. The plugin asks blockchain.info for the list of unspent outputs at that address and looks for one matching the order’s expected amount. What data is sent: Only the merchant’s BTC wallet address — the same address the buyer is asked to send funds to (already public, both on your checkout page and on-chain). The request URL looks like https://blockchain.info/unspent?active=YOUR_BTC_ADDRESS. No buyer data, no order ID, no site identifiers. When it’s sent: Only while a customer is actively on the Cryptoniq payment page for an unpaid BTC order — polled via AJAX every few seconds until payment is detected or the 3-hour payment window expires. Never otherwise. Terms of Service: https://www.blockchain.com/legal/terms Privacy Policy: https://www.blockchain.com/legal/privacy 3. api.etherscan.io — ETH transaction lookups What it is: Etherscan’s public Ethereum blockchain explorer API. What it’s used for: Same purpose as blockchain.info but for ETH — checking whether the customer’s expected ETH payment has arrived at the merchant’s wallet address. What data is sent: Only the merchant’s ETH wallet address and an Etherscan API key (the plugin ships with a free shared-tier key; you can replace it via the apikey_eth option). The request URL looks like https://api.etherscan.io/api?module=account&action=txlist&address=YOUR_ETH_ADDRESS&apikey=.... No buyer data, no order ID, no site identifiers. When it’s sent: Only while a customer is actively on the Cryptoniq payment page for an unpaid ETH order — same AJAX polling schedule as blockchain.info above. Never otherwise. Terms of Service: https://etherscan.io/terms Privacy Policy: https://etherscan.io/privacypolicy The plugin never connects to api.cryptoniq.io or any other server controlled by the plugin author — all blockchain and price data comes from the three independent public services listed above. Third-Party Libraries This plugin ships with the following third-party JavaScript libraries. The minified files in assets/js/cryptoniq.libs.js are publicly maintained open-source projects — full unminified source is available at each project’s repository: clipboard.js v1.7.1 — copy-to-clipboard helper for the payment box. Source: https://github.com/zenorocha/clipboard.js (MIT license)
MyCryptoCheckout – Bitcoin, Ethereum, and 100+ altcoins for WooCommerce
Crypto payment gateway for WooCommerce and Easy Digital Downloads. Receive coins, including Bitcoin, directly into the wallet of your choice. Key Features & Highlights 0% transaction fees Peer-to-peer transactions No KYC or product restrictions No redirection to 3rd parties or iframes Use any crypto wallet you want Automagically detect unique payments using one wallet address Hierarchically deterministic (HD) wallet support 1-Click payment buttons, Electrum, MetaMask, Trust Wallet, Phantom, etc. Donations widget shortcode generator 0-conf (mempool) support for some coins Compare MyCryptoCheckout to several other traditional and crypto solutions – Payment Gateway Comparison Take MCC for a test ride by visiting our demo store The free license can process 5 sales per month. A flat rate license can be purchased for your account that includes unlimited transactions if you require more. Bulk pricing is available if you need to use MyCryptoCheckout on several domains. eCommerce platforms supported Easy Digital Downloads WooCommerce Cryptocurrencies supported: Algorand ALGO Base Chain BASE (Including Metamask) Binance Coin BNB (Including Metamask) Bitcoin BTC (Including SegWit, HD wallets) Doge Ethereum ETH (Including MetaMask, ENS addresses) Litecoin LTC Monero XMR Polygon MATIC Solana SOL Stellar XLM Tron TRX XRP BASE tokens supported (Including MetaMask): Degen DEGEN HOLD EARN USD Coin USDC Wrapped Ether WETH BEP-20 tokens supported (Including MetaMask): BakeryToken BAKE Binance-Peg BUSD Binance-Peg BUSD-T Binance-Peg USD Coin HOLD EARN PancakeSwap Token CAKE Swipe SXP Unity UNT VAI Stablecoin VAI Venus XVS Value Flow VFLOW xxxNifty NSFW ERC-20 tokens supported (Including MetaMask, ENS addresses): 0x ZRX 1inch 1INCH Aave AAVE ApeCoin APE Aragon ANT Bancor BNT Basic Attention Token BAT Chainlink LINK Compound COMP Efinity Token EFI Fetch.ai FET Gitcoin GTC GROW Multi-collateral DAI DAI Decentraland MANA Dogecoin DOGE Dragonchain DRGN Enjin Coin ENJ EURC FUNToken FUN Gemini Dollar GUSD Immutable IMX Huobi Token HT Kyber Network KNC Loom LOOM Maker MKR MetalPay MTL Mirada AI MIRX Nexo NEXO OMG Network OMG PEPE Polygon MATIC_ERC20 Polymath Network POLY Populous PPT Pundi X PUNDIX REEF Request REQ SHIBA INU SHIB Status SNT SWITCH Synthetix SNX TenXPay PAY Tether USDT TrueUSD TUSD Uniswap UNI USD Coin USDC Veritaseum VERI Wrapped Bitcoin WBTC ZRX 0x Protocol TRC-20 tokens supported: Tether USDT Polygon MATIC tokens supported: Pleasure Coin NSFW Cryptocurrency Donations Widget Receive donations in any of the cryptocurrencies supported by MyCryptoCheckout. Generate a widget using our simple shortcode generator and add it into any text widget or text editor. Shortcode generation options: select currencies to show select primary currency show currencies with icons or a dropdown box show QR code show wallet address text Code snippets We have various code snippets that allow you to customize MyCryptoCheckout together with your e-commerce solution: See all available code snippets Security Features MyCryptoCheckout includes security measures to protect your store and your customers. Disable Wallet Editing Once wallets are set up, prevent edits by adding this to your wp-config.php: define( ‘MYCRYPTOCHECKOUT_DISABLE_WALLET_EDITOR’, true ); Admin Hardening Toggle these options in Settings > MyCryptoCheckout > Global Settings > Security: Administrator Lockdown (Freeze Admin Creation): Proactively blocks the creation of new Administrator accounts to prevent privilege escalation attacks. Enabled by default. Disable Built-in File Editor: Disables the native WordPress Theme and Plugin editors to prevent code injection. Disable XML-RPC: Shuts down xmlrpc.php to block common brute-force and DDoS attack vectors. Wallet Change Watchdog Automatically emails the site administrator with details if wallet addresses are manually modified in the dashboard. Frontend Heartbeat Protection Real-time verification ensures the displayed wallet address matches the database, immediately redirecting the user to safety if tampering is detected. External services MyCryptoCheckout API * Usage: Upon plugin activation an account is created on the MyCryptoCheckout API server: api.mycryptocheckout.com. The only data that is sent is your WordPress install’s public URL and the plugin version. This info allows the API – which functions solely as a blockchain crawler – to return updated exchange rates, blockchain transaction confirmations, and license status (if any) to your site. The plugin version is used to help answer requests made by the plugin (different plugin versions speak to the API server differently). See how MyCryptoCheckout works. If your server cannot be reached by the API server this plugin will not be able to autoconfirm blockchain transactions. * Data Sent: Selected currency, currency amount, destination wallet addresses, and license keys are sent when an order is created. * Link: MyCryptoCheckout * Privacy Policy: https://mycryptocheckout.com/privacy-policy/ * Terms of Service: https://mycryptocheckout.com/terms-conditions/ Web3 Wallet Integration (Ethereum) * Usage: Allows users to click a “Pay with Wallet” button to automatically fill in payment details in their browser extension. * Data Sent: Transaction details (destination address and amount) are passed locally to the user’s installed wallet extension.
