Has 4 tiers: Bronze, Silver, Gold & Diamond. Users can pay MTOP & ONE to mint and receive an NFT. Buying an NFT allows the user to access MtopSwap's software. The USD price & subscription duration increases with the tier.
The owner of the contract can gift the NFT to users. Diamond tier has the same duration as Gold, but can't be minted by the user - only gifted by the owner.
$ONE and $MTOP amounts total to a certain USD sum.