How to integrate bitcoin and cryptocurrencies in Magento 2 store?

Well, you can integrate Bitcoin and other cryptocurrencies in your Magento 2 store using the Magento 2 Bitcoin and Crypto Currencies extension. It allows users to pay with popular cryptocurrencies like Bitcoin and more.

Some of the features of the extension - 

• The admin can receive the payments via crypto wallets.
• Customers can pay with cryptocurrencies for the orders.
• The admin can add, edit, and delete crypto payment methods.
• The admin can add 50+ crypto payment methods.
• A wallet QR Code can be displayed at checkout and on order details.
• Payment reminder and transaction mail to customers.
• Payment receipt mail to the customer after crypto payment is confirmed.
• Specify the number of days after which the order gets canceled automatically if the payment is not made.
• Display crypto payment methods in a flat or dropdown list as required.
• Set a custom title for the crypto payment method at the checkout page.
• The exchange rate for cryptocurrency at the time the order is placed is considered.
• Add destination tag/memo for the cryptocurrencies requiring the same. 

Hope this helps!