ERC-20: Token Standard

wikipedia:ERC-20 allows for fungible tokens on the Ethereum blockchain.

• https://eips.ethereum.org/EIPS/eip-20
• https://etherscan.io/tokens

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

balance (ERC-20)

ERC20 approve

Related

• ERC-721 Non-Fungible Token Standard
• ERC-1155 Multi Token Standard
• Crypto token
• https://en.wikipedia.org/wiki/Category:Ethereum_tokens
• Bitcoin: BRC-20
• Solana: SPL tokens
• USD Coin (USDC)
• 1,300,000 to 1,500,000 gas, ~1USD on Sep 2025
• Solana: TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA
• TIP-20 tokens

See also

• Ethereum Tokens: ERC-20, mint (Solidity), weETHk, balance, approve, ERC20InsufficientAllowance
• Token, Digital asset, Cryptocurrency, Top, Ethereum Tokens: ERC-20, ERC-721, ERC-1155, NFTs, Governance Token, TOKEN, Memecoin, AI token