Cryptoniq vs Ether and ERC20 tokens WooCommerce Payment Gateway

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)

Ether and ERC20 tokens WooCommerce Payment Gateway is the only one true decentralized ether and ERC20, ERC777 and ERC223 token payment plugin. It enables customers to pay with Ether or any ERC20, ERC777 or ERC223 token on your WooCommerce store. Your customers will be offered the option of paying with Ether or some ERC20, ERC777 or ERC223 token at checkout. If they choose that option then they will be quoted a price in Ether or ERC20, ERC777 or ERC223 token for their order automatically. After submitting their order they will be given the details of the Ether or ERC20, ERC777 or ERC223 token transaction they should make. Binance Smart Chain (BSC) and Polygon (Matic) are also supported! Features Accept payment in Ether or any ERC20, ERC777 or ERC223 token of your choice Second payment method can be configured to accept Ether or token only. Mobile ready with WalletConnect payment method Free to use. Fixed fee per purchase User friendly payment wizard Automatically convert order value to Ether or ERC20, ERC777 or ERC223 token at checkout Option for adding a percentage mark-up to the converted price of Ether and/or tokens to help cover currency fluctuations. Allows easy payment via MetaMask or any other Web3 Wallet client. If customer do not want to use MetaMask, she can just copy and paste Value, Address, and Data fields in her favorite wallet software. Provides a link to install MetaMask on desktop and deep link to install MetaMask Wallet or Trust Wallet on mobile The Disallow customer to pay with Ether option is useful to accept only some token Automatic transaction tracking / reconciliation and order updates Integration with the Ethereum Wallet plugin is provided. Ethereum Wallet PRO is required. Token rate can be specified in the store’s base currency code myCRED Point Based Stores are supported: points can be sold for ERC20 tokens Custom WooCommerce currency based stores support Payment Complete Order Status setting can be used to configure the status to apply for order after payment is complete Dynamic token prices from UniswapV2, livecoin.net, coinmarketcap.com, coinbase.com, cryptocompare.com, kanga.exchange Markup per token Digits after a decimal point display count setting Binance Smart Chain support Polygon (Matic) support Ethereum Node JSON-RPC Endpoint and Ethereum Node Websocket Endpoint admin settings allows you to use your own Ethereum node. Transaction explorer URL setting can be used to set your own blockchain explorer for tx links shown The WooCommerce Deposits and other similar plugins are supported The epg_token_address_to_purchase_url filter can be used to configure the ETH or token purchase URL. WPJobster theme addon compatibility. The Cryptocurrency Product for WooCommerce plugin token product icons are shown on the WooCommerce Checkout page. The only one true decentralized ether and ERC20, ERC777 or ERC223 token payment plugin. There are no service other that Ethereum blockchain is used in this plugin. You do not need to trust us or any other party. This plugin uses a public smart contract in the Ethereum blockchain to record and confirm orders The Payment Gateway smart contract: 0xd0E4e3A739A454386DA9957432b170C006327B0d The Payment Gateway smart contract on the Binance Smart Chain: 0x77913766661274651d367A013861B64111E77A3f The Payment Gateway smart contract on the Polygon (Matic): 0x77913766661274651d367A013861B64111E77A3f Combined with the Cryptocurrency Product for WooCommerce plugin it can allow you to sell ERC20, ERC777 or ERC223 tokens for Ether or Ether for ERC20, ERC777 or ERC223 tokens. Ether, ERC777 or ERC223 payment The payment with Ether, ERC777 or ERC223 tokens is a simple one step process. Customer have to send one transactions to the Ethereum blockchain. ERC20 token payment The ERC20 token payment consists of two steps: Deposit funds to the payment gateway smart contract in the Ethereum blockchain, and Use this deposit to pay for your order Customer have to send two transactions to the Ethereum blockchain: first for deposit and second for the real payment There are no need to refund the deposit to cancel the first step, since it is actually a Token.approve call that doesn’t transfer any tokens. Business Version Features This feature is only supported for the Business plan. Upgrade to Business Custom or private network. Support for your own custom or private Ethereum fork or Quorum network. Disclaimer By using this free plugin you accept all responsibility for handling the account balances for all your users. Under no circumstances is ethereumico.io or any of its affiliates responsible for any damages incurred by the use of this plugin. Every effort has been made to harden the security of this plugin, but its safe operation depends on your site being secure overall. You, the site administrator, must take all necessary precautions to secure your WordPress installation before you connect it to any live wallets. You are strongly advised to take the following actions (at a minimum): Educate yourself about cold and hot cryptocurrency storage Obtain hardware wallet to store your coins, like Ledger Nano S Educate yourself about hardening WordPress security Install a security plugin such as Jetpack or any other security plugin Enable SSL on your site if you have not already done so. By continuing to use the Ether and ERC20 tokens WooCommerce Payment Gateway plugin, you indicate that you have understood and agreed to this disclaimer. Troubleshooting WooCommerce session broken If you are getting this message: ETH price quote has been updated, please check and confirm before proceeding it means that your server installation settings broke the WooCommerse session somehow. Install the WordPress Native PHP Sessions in this case. Configure for woocommerce-deposits plugin Use this snippet in your function.php file if the woocommerce-deposits plugin is used and you want to disable tokens payment for the full payment case. // @see https://wordpress.stackexchange.com/a/138598/137915 add_filter('woocommerce_available_payment_gateways','my_filter_gateways',1); function my_filter_gateways($gateways) { global $woocommerce; //Remove a specific payment option if (isset($gateways['ether-and-erc20-tokens-woocommerce-payment-gateway']) && !(isset(WC()->cart->deposit_info['deposit_enabled']) && true === WC()->cart->deposit_info['deposit_enabled']) ) { unset($gateways['ether-and-erc20-tokens-woocommerce-payment-gateway']); } return $gateways; } Advanced configuration To change the URL for the token or ETH purchase link, define a filter like this: add_filter('epg_token_address_to_purchase_url','my_token_address_to_purchase_url',1); function my_token_address_to_purchase_url($token2wcproduct) { $url = "https://example.com/buy-ether"; $token2wcproduct['0x0000000000000000000000000000000000000001'] = $url; $url = "https://example.com/buy-token"; $token2wcproduct['0x0123456789012345678901234567890123456789'] = $url; return $token2wcproduct; } Testing You can test this plugin in some test network for free. Testing in sepolia Set the Blockchain setting to sepolia Buy some 0x9295a2ba374cf5d575d076c0a48ed12287ad4659 TSX token by sending some Sepolia Ether amount to it’s Crowdsale contract: 0x1ddef0c5628fc54c1eb0f91a3fdba57b05549d13 Set the Supported ERC20 tokens list setting to support the 0x9295a2ba374cf5d575d076c0a48ed12287ad4659 token Create a cheap test product in your store Buy this product with Sepolia Ether and/or this TSX token Check that proper amount of Sepolia Ether and/or TSX token has been sent to your payment address Testing in goerli Set the Blockchain setting to goerli Buy some 0xb4354f51b51ab69d7415d54108dd2f68223c3239 TSX token by sending some Goerli Ether amount to it’s Crowdsale contract: 0x448276ac3c99620f02cc2ac60964aca44b20929a Set the Supported ERC20 tokens list setting to support the 0xb4354f51b51ab69d7415d54108dd2f68223c3239 Create a cheap test product in your store Buy this product with Goerli Ether and/or this TSX token Check that proper amount of Goerli Ether and/or TSX token has been sent to your payment address Fees The fee is published in a blockchain and is limited by a maxFee property in smart contract. This guaranties your safety as a plugin customer. The feePercent and maxFee values a saved as % * 10^6: The maxFee is 3% which is saved as 3000000 and can not be changed. The feePercent is 1,5% which is saved as 1500000 and can be changed in a 0% to 3% range. We reserve the right to change the fee in the 0% to 3% range to reflect the market changes. l10n This plugin is localization ready. Languages this plugin is available now: English Russian(Русский) Polish(Polski) by Jacek from btcleague dot net Spanish(Español) Chinese(中文) German(Deutsche) Feel free to translate this plugin to your language.