Hub20 Checkout

Intro

Hub20 is a self-hosted online payment solution allowing users to collect payments in Ethereum and any ERC20 token.

Checkout20 is the frontend Javascript SDK, meant to run in any modern browser.

Usage

First you need to have an account at your Hub20 instance and define your store. To initiate a checkout:

    <div id="hub20 store"></div>

    <script type="text/javascript">
     window.addEventListener('load', function() {
       new Hub20.checkout("#store", {
         serverUrl: "https://your.hub20.example.com",
         storeId: "your-store-id-uuid",
         charge: {
             currency: "USD",  // You can use any currency code
             amount: "2.50",
             externalIdentifier: "John Doe invoice #20"
         },
         options: {
             onPaymentReceived: function(payment, checkout) {
                console.log("TODO")
             },
             onPaymentSent: function(payment, checkout) {
                console.log("TODO")
             },
             onPaymentConfirmed: function(payment, checkout) {
                 console.log("TODO")
             },
             onComplete: function(checkout) {
                console.log("You get all information about the checkout: routes, payments, etc")
             },
             onCanceled: function(checkout) {
                 console.log("User has left this checkout")
             },
             onError: function(error, message) {
                 console.error("Oh, Jimmy...")
             }
         }
       })
     })
    </script>

If you have access to the backend of your web application and want to check the status of the payment, you can do so - just check the documentation of Hub20's API. However, if your website which integrates Hub20 relies on the voucher's provided by Hub20 to verify payment, you need to implement the onPayment functions described below:

• onPaymentSent: this function is called when a transaction done to the payment address is created, but before being mined.

• onPaymentReceived: this function will be called when any transaction with the payment is mined and Hub20 could verify that it is the recipient of the transfer

• onPaymentConfirmed: this function will be called whenever a payment can not be reverted (i.e, it was received on Raiden or the number of confirmations is hgher than the minimum required by the store definition)