ERC 20 is one of the most widely known standards for fungible tokens, as its greatest traits are each token has the same value and can be interchanged. ERC 20 tokens can be represented as anything on-chain with the same price or value and also be transferred. In the NFT market, however, ERC 721 and ERC 1155 are the two most predominantly used and popular standards. ERC 721 is the first standard protocol for Non-Fungible Tokens, each with specific characteristics and ownership details. Simply ...