With Beeple and GaryVee entering the NFT space and also being covered by Saturday Night Live, we can safely say that NFTs have reached the mainstream. But where do we go from here? Non-fungible tokens started with the rise of CryptoKitties in 2017. The token standard ERC721 is a free, open standard that describes how to build non-fungible or unique tokens on the Ethereum Blockchain. Most tokens are fungible meaning that every token is similar to the other, for example 1 Ether = 1 Ether. The E...