Un ERC It's like a recipe that programmers follow to make everything on Ethereum work well and in a compatible way. It allows all tokens, smart contracts and applications to speak the same language. Thanks to ERCs, a token created by a person can work seamlessly on wallets, exchanges and games made by other people.

ERC (Ethereum Request for Comments) is a system of technical proposals and open standards that defines how smart contracts, tokens and applications should behave within the Ethereum ecosystem. Each ERC details a standard interface which describes functions, events, data structures, and behavioral patterns that developers must implement to ensure interoperability, compatibility and security within the network and between tools such as wallets, exchanges, marketplaces, DAOs and dApps.

The ERC system is closely linked to the Ethereum open development process, where any member of the community can propose improvements or new standards through a document EIP (Ethereum Improvement Proposal). When that EIP proposes a specific application interface and is approved, it becomes an official ERC. Some of the best-known and most widely adopted ERCs are:

• ERC-20: fungible tokens such as stablecoins or internal currencies.
• ERC-721: unique and unrepeatable non-fungible tokens (NFTs).
• ERC-1155: hybrid and multifunctional tokens in a single contract.
• ERC-4626: standard for asset vaults and DeFi protocols.
• ERC-3643: regulated tokens with identity control and legal compliance.

These standards allow any smart contract that implements them to be easily integrated into the Ethereum ecosystem without the need for individual adaptations. In addition, ERCs promote security, transparency and modularity, since they are publicly reviewed, peer audited and documented to facilitate their adoption. The proper use of ERCs not only improves the end user experience, but also ensures that developers build on a solid, predictable, and compatible foundation at the infrastructure level.

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