EVM Token Standards Overview

Ethereum's innovation has been fueled not just by smart contracts but also by token standards—defined interfaces that let developers build interoperable assets. These standards govern how tokens behave, transfer, and interact with wallets and dApps.

Four that matter in practice: ERC-20, ERC-1155, ERC-6909, and ERC-7281. If you build, invest, or just read contracts, this is how a lot of the Web3 economy actually moves.

ERC-20: The fungible token blueprint

Launched in 2015, ERC-20 is the original token standard for Ethereum. It defines a set of functions for fungible tokens—tokens that are identical and interchangeable, like currency.

Key features:

• Each token contract represents one asset type
• Functions: transfer, approve, transferFrom, balanceOf, totalSupply
• Widespread adoption in DeFi, DAOs, and ICOs

Use cases:

• Stablecoins (e.g., USDC, DAI)
• Governance tokens (e.g., UNI, AAVE)
• Wrapped assets (e.g., WBTC)

These tokens form the foundation of modern DeFi protocols and decentralized applications.

Limitations:

• No batch operations
• One contract = one asset
• Not suitable for NFTs or multi-token systems

ERC-1155: Multi-asset, multi-use

Introduced by Enjin in 2018, ERC-1155 is a multi-token standard that allows a single contract to represent multiple token types—both fungible and non-fungible.

Key features:

• Supports batch operations
• Combines NFTs and fungibles in one contract
• Efficient minting and transferring of multiple assets

Use cases:

• Gaming (e.g., weapons, armor, currency in one contract)
• Digital collectibles
• Metaverse economies

Trade-offs:

• More complex to implement
• Requires safeTransferFrom and onERC1155Received callbacks for safe interactions

ERC-6909: The lean multi-token standard

ERC-6909 is a newer, lightweight alternative to ERC-1155, ideal for DeFi protocols that need to represent multiple fungible asset types efficiently.

Key features:

• Minimal interface for managing multiple token types
• No mandatory callbacks
• Built-in per-token allowances (vs. global approvals only in 1155)
• More gas-efficient than both ERC-20 and ERC-1155

Use cases:

• Vault shares
• LP tokens (e.g., used in Uniswap v4 PoolManager)
• Tokenized funds with multiple classes

ERC-6909 offers a simpler, developer-friendly way to manage fungible assets at scale—without the operational overhead of ERC-1155.

ERC-7281: Cross-chain token identity

ERC-7281 introduces a standardized interface for identifying tokens across chains by embedding the chainId into the token's interface.

As multichain ecosystems grow, ambiguity in token identity becomes a major problem. For example, USDC on Ethereum L1 and USDC on Arbitrum may be totally different tokens. ERC-7281 helps prevent confusion, spoofing, and misrepresentation in dApps, bridges, and explorers.

Key features:

• Adds chainId() function to token interfaces
• Extends symbol(), name(), and decimals() with optional chainId-aware context
• Helps wallets and protocols differentiate tokens across L1s, L2s, and sidechains
• Aids in bridge security and cross-chain composability

Use cases:

• Cross-chain token registries
• Safe bridging and token routing
• dApps displaying accurate token info across chains

Compatibility:

ERC-7281 is complementary to ERC-20, ERC-1155, and even ERC-6909. It doesn't replace them—it enhances them by giving tokens global uniqueness.

Comparison

Each Ethereum token standard serves a specific purpose:

• ERC-20 is the default for simple fungible assets.
• ERC-1155 shines in multi-asset and NFT-rich environments like games.
• ERC-6909 is a leaner pattern for multi-token DeFi applications.
• ERC-7281 gives tokens a cross-chain identity so they aren't confused across the ecosystem.

The standards keep getting leaner because builders need faster, cheaper, more composable financial plumbing.

If you're building dApps, wallets, or protocols, choosing the right token standard isn't just a technical decision—it's a product design choice. Pick wisely.