The new guidelines say apps may use in-app purchases to sell NFTs and sell services related to them, such as minting, listing, and the transferring of these tokens. Apps can also allow users to browse NFT collections owned by others so long as the apps do “not include buttons, external links, or other calls to action that direct customers to purchasing mechanisms other than in-app purchase"
Is it possible to do in-app purchases using crypto currency for minting? Or minting with crypto currency is not allowed and now they only allow to mint with FIAT currencies?