Custom Crypto Checkout method

Topic summary

Focus: creating a custom checkout that redirects customers to an external app to complete payment via a non-fungible token (NFT) swap.

Key questions:

  • Should this be implemented via theme customization or as a Shopify app?
  • Would such a solution comply with Shopify’s payment app requirements, which the poster believes it may not?

Additional input:

  • Another participant plans a similar approach for their own site (shared a link) and asked for implementation details, indicating Shopify’s native checkout isn’t suitable for their needs.

Status:

  • No concrete guidance, solutions, or decisions yet.
  • Open issues include the correct integration path (theme vs app) and alignment with Shopify’s payment app policies.
  • Discussion remains open with unanswered technical and compliance questions.
Summarized with AI on January 6. AI used: gpt-5.

The shopify documentation has left me very confused on where I should start. Firstly I want to have a custom payment method for my store where when they checkout, they are redirected to an external app to perform a swap of non-fungible tokens, and that would be the payment. What I don’t completely understand is, would this be something that would have to be implemented in a shopify theme, or would it have to be deployed as a shopify app, because I don’t believe it would meet shopify’s payment app requirements. Thank you.

I am actually deciding to use the same method of checkout for my webpage Evolution of Cryptonewzhub.com Computer, Because shopify checkout method is out of my thoughts. Can you explain How did you made this method of checkout. Thankyou.