Looks like this is a rip from the steam application/website:
"Bitcoin transactions are authorized through the BitPay website. Click the button below to open a new web browser to initiate the transaction."
"This process can take up to 60 seconds. To avoid purchasing failures, please do not hit your back button or close the bitpay window before the process is complete."
"Your purchase is currently in progress and is waiting for confirmation of Bitcoin delivery from BitPay. This process can take several minutes to a few days for confirmation. Valve will send an email receipt to you when payment is received for this purchase. During this time you may continue shopping for other games, though you will not be able to re-purchase any products that are pending in this transaction."
Nice, now I can buy HuniePop without it being traced back to my PayPal.