erc-standards
ERC (Ethereum Request for Comments) standards are technical specifications for smart contracts on the Ethereum blockchain, defining how different contracts and applications should interact.
ERC standards, short for Ethereum Request for Comments, are a set of technical specifications and proposals that define how smart contracts and decentralized applications (dApps) should operate on the Ethereum blockchain. They serve as a crucial framework for achieving interoperability, standardization, and consistency within the Ethereum ecosystem. The process begins with an EIP (Ethereum Improvement Proposal), which is a document outlining a new feature, standard, or improvement for Ethereum. EIPs are categorized into Standards Track (Core, Networking, Interface, ERC), Informational, and Meta. ERCs specifically fall under the Standards Track and focus on application-level standards, such as token formats (like ERC-20 and ERC-721), naming conventions, or API definitions. Once an EIP is proposed, it undergoes discussion, refinement, and review by the Ethereum community, developers, and core contributors. If consensus is reached and the proposal is deemed beneficial and technically sound, it is accepted and becomes an official ERC standard. These standards dictate how smart contracts should expose functions, emit events, and handle data, ensuring that different contracts and applications can communicate and interact seamlessly. For example, any wallet or exchange can support all ERC-20 tokens without needing custom integration for each new token because they all adhere to the same interface. This standardization significantly reduces development complexity, enhances user experience, and fosters a robust ecosystem.
graph LR
Center["erc-standards"]:::main
Pre_computer_science["computer-science"]:::pre --> Center
click Pre_computer_science "/terms/computer-science"
Rel_erc_20["erc-20"]:::related -.-> Center
click Rel_erc_20 "/terms/erc-20"
Rel_erc_721["erc-721"]:::related -.-> Center
click Rel_erc_721 "/terms/erc-721"
Rel_non_fungible_tokens_nfts["non-fungible-tokens-nfts"]:::related -.-> Center
click Rel_non_fungible_tokens_nfts "/terms/non-fungible-tokens-nfts"
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🧒 Explain Like I'm 5
ERC standards are like the rulebook for building things on [Ethereum](/en/terms/ethereum). They make sure everyone building apps or digital coins follows the same instructions, so all the different parts can talk to each other easily, like how different brands of toys can connect to the same train tracks.
🤓 Expert Deep Dive
Ethereum Request for Comments (ERCs) are formalized EIPs (Ethereum Improvement Proposals) that define application-level standards, fostering interoperability and composability within the Ethereum ecosystem. They are crucial for abstracting away the complexities of direct smart contract interaction, enabling a richer developer experience and a more cohesive user interface. The governance model surrounding EIPs, involving community discussion, core developer review, and eventual consensus, ensures that adopted standards are robust and widely applicable. ERCs typically define interfaces (function signatures, event signatures) and sometimes specific implementation patterns. The success of standards like ERC-20 and ERC-721 demonstrates the power of standardization in creating network effects, where the value of the platform increases with the number of compatible applications and assets. However, the rigidity of established standards can also pose challenges, sometimes requiring new EIPs to introduce backward-incompatible features or address unforeseen edge cases, leading to fragmentation or the need for complex migration strategies.