Ethereum also allows for the creation of unique and indivisible tokens, called non-fungible tokens (NFTs). Since tokens of this type are unique, they have been used to represent such things as collectibles, digital art, sports memorabilia, virtual real estate, and items within games.

History of ERC-20

Smart contracts were becoming more popular in 2015, but several issues needed to be addressed. Because anyone could make a token, many were being made. However, there wasn't a way to ensure that all the different tokens could be created, used, or exchanged by everyone using the blockchain. Without a standardized token methodology, every application would need its own token. Users would need to find a way to convert them back and forth between the hundreds of apps being developed. #TradeNTell $ETH