We are a fan of hearthstone produced by Blizzard, in which, the card can be divided into four categories based on the quality: common, rare, epic, and legendary. Legendary cards are the most valuable and powerful ones. When you purchase a card pack, you don't know what cards you will get before you open them. We want to move this brilliant idea into blockchain with the help of smart contracts and NFT.
ButterSwap's NFT system is designed to provide both joy and profit to the users. It contains the following major components: