A Non-Fungible Token (NFT) is used to identify something or someone in a unique way. This type of token is perfect to represent ownership over digital or physical assets, which leads to unlimited use cases. The ERC-721 introduces an acknowledged standard for NFT, which enables NFT to be owned and transacted by individuals or consigned to a third party. In theory, NFTs are uniquely flexible because they can be made to represent anything. However, the reality is that most NFTs are created and u...