Blockonomics payment buttons/links/widgets are highly configurable. The article gives an overview on how you can programmatically create checkouts to charge your customers. Blockonomics uses a concept of child product to enable this feature

Parent Product

This product has to be created manually from Merchant > Payment Buttons. The parent product defines the default values of the product like Product name, code description, price etc It also defines also what customer fields must be accepted in input form and currency (USD/EUR etc)

Parent Product defines the default values of the product

Child Product

Child Products can be created programmatically from a parent product. A child product inherits all values of the parent product. Multiple child products can be created from a single parent product. A child product is allowed to modify the following attributes:

  • Product Name
  • Product Description
  • Value (Price of the Product)
  • Add custom data



Request Body(JSON encoded - All fields are optional): {"parent_uid": "uid of parent product", "product_name": "name", "product_description": "description," "value": price, "extra_data": "custom_data"}

Headers: {Authorization: Bearer APIKey}

The current limit to total number of child products you can keep is 2000. So you can delete the older child_products to ensure that you are within this limit. Note that deleting the child product will not remove the associated order information of the customer.


uid is the complete UID of the product to be deleted like f7570454529a11e7-1ee5f340

Headers: {Authorization: Bearer APIKey}

Examples / Use Cases

Cart Checkout

You have a custom website / ecommerce store. On checkout you want the customer to pay the cart value in bitcoin. 

Product Name: Order# 342

Product Description: 1 Red T-shirt. 2 Khaki Trousers (Cart Details)  

Value: 500 (Cart Value)

curl -H 'Authorization: Bearer 2cDNOlCN985d7Rx3atSDOlmMeYaxzho2uPmHheIw4eU' 
-d'{"parent_uid": "b5c04c7c395011ea", "product_name": "Order #412",
"product_description": "1 Red T-shirt\n2 Khaki Trousers", value:500"}'

Recurring/Subscription Invoices

You charge 5USD per month for your streaming service. Each month you can create an automated invoice and send it to your customer for payment. Since the price of product is same, you just change the product_name for each month. Price and other details are automatically taken from the parent product

Product Name: Invoice For February 2020

curl -H 'Authorization: Bearer 2cDNOlCN985d7Rx3atSDOlmMeYaxzho2uPmHheIw4eU' 
-d'{"parent_uid": "b5c04c7c395011ea", "product_name": "Invoice For February 2020"}'

Adding Custom Data

You customer is already logged in your website and you want to attach data to the invoice to identify the customer. This can be done by using extra_data field. In this example I also want to give the customer a discounted price, so I also changed the price field

Extra Data: "customer_id: btcjohn22"

Value: 250.16 (Price of the product)

curl -H 'Authorization: Bearer 2cDNOlCN985d7Rx3atSDOlmMeYaxzho2uPmHheIw4eU' 
-d'{"parent_uid": "b5c04c7c395011ea",
"extra_data": "customer_id: btcjohn22", "value": 250.16}'

Adding Custom Data via JS(Only Payment Buttons)

For payment buttons, custom data can also be specified on the client side by a data-extra HTML attribute without the need of creating a child product

You can change this attribute via JS and it will be  picked up before form submission   

<a href="" class="blockoPayBtn" data-toggle="modal"data-extra="customer_id: btcjohn22" data-uid="f7570454529a11e7">                               

Showing the Checkout

API will return a uid for child product like this f7570454529a11e7-1ee5f340. You can set this uid to a payment button/link/widget

Payment Button

<a href="" class="blockoPayBtn" data-toggle="modal" data-uid="f7570454529a11e7-1ee5f340"><img width=160 src=""> </a>

Payment Link

Payment Widget

<script src=""></script>
function pay() {
msg_area: 'payment_area',
uid: 'f7570454529a11e7-1ee5f340',
email: ''

Order Details / Callback Notifications

Order details can fetched via API. HTTP Callback Notiifcations also work via Order Hook URL. Please see our payment button API for more details