What is the most used ERC?

Could you please elaborate on what you mean by "the most used ERC"? ERC typically stands for Ethereum Request for Comment, which is a way to propose new ideas or standards for the Ethereum blockchain. Are you referring to the most popular ERC tokens, the most widely implemented ERC standards, or something else entirely? If we're talking about ERC tokens, ERC-20 is certainly one of the most commonly used standards. It defines a common set of rules for fungible tokens, enabling their seamless integration into Ethereum-based wallets, exchanges, and smart contracts. ERC-20 tokens have become a staple in the cryptocurrency ecosystem, powering a wide range of projects and applications. However, there may be other ERCs that are more prevalent in specific niches or use cases. For instance, ERC-721 represents a standard for non-fungible tokens (NFTs), which have gained significant popularity in recent years. Could you clarify your question to help me provide a more accurate answer?