NFT minting and corrupt contracts in the west

assalamou alaikom,
What is the ruling of NFT minting? which is buying an NFT before the collection is revealed, so you dont know what exact NFT from the collection you will get, only after you have paid the price for it. and can we as muslims living here in the west, when the sharia ruling of a subject isn’t 100% clear take the hanafi opinion on that states that العقود الفاسدة (corrupt contracts) are allowed in non-muslim countries?
may allah bless you all