The infura API Key is used to communicate with the Ethereum blockchain. It is used in the Ethereum ICO WordPress Plugin, the Cryptocurrency WordPress Plugin for WooCommerce, the WordPress Ethereum Wallet plugin and in the Ether and ERC20 tokens WooCommerce Payment Gateway.
Step 1. Register
In order to get the infura API Key you need to register at infura.io Input your Name, email and a password, then click the SIGN UP button:
Then it will ask you to confirm your email
Go to your email box and check for a mail from Infura with a Verify your email title:
Open this email and press the CONFIRM EMAIL ADDRESS button:
Next will be the welcome page, click start tour:
Step 2. Create the infura API Key
A page of personal projects on infura.io appears. Press the CREATE NEW PROJECT button:
Input your project name. The domain name of your site is a good choice here. Then press the CREATE PROJECT button:
The infura API Key is created now. Copy the API KEY value by pressing the small button at the right of it:
Important! Never disclose the API SECRET value
Step 3. Use the infura API Key
Paste the copied API Key in the Infura.io Api Key setting in the Ethereum ICO WordPress Plugin and/or Cryptocurrency WordPress Plugin for WooCommerce.
See also: Ethereum ICO WordPress Plugin Install and Configure, Cryptocurrency WordPress Plugin for WooCommerce Install and Configure.